/* ================================================================
   SU-Note · Sonic Syntax
   ----------------------------------------------------------------
   High-tech DAW / IDE dark mode. Deep blue layered surfaces,
   sky-blue primary, cyan-accent meters, purple secondary for
   creative modifiers, amber tertiary for warnings. Glass panels
   over the base, label-caps section heads, monospaced data.
   The aesthetic of a professional mixing console.
================================================================ */

/* ----------------------------------------------------------------
   FONT — Paperozi (Paperlogy) · single typeface across the app
---------------------------------------------------------------- */
@font-face {
  font-family: 'Paperozi';
  src: url('https://cdn.jsdelivr.net/gh/projectnoonnu/2408-3@1.0/Paperlogy-1Thin.woff2') format('woff2');
  font-weight: 100; font-display: swap;
}
@font-face {
  font-family: 'Paperozi';
  src: url('https://cdn.jsdelivr.net/gh/projectnoonnu/2408-3@1.0/Paperlogy-2ExtraLight.woff2') format('woff2');
  font-weight: 200; font-display: swap;
}
@font-face {
  font-family: 'Paperozi';
  src: url('https://cdn.jsdelivr.net/gh/projectnoonnu/2408-3@1.0/Paperlogy-3Light.woff2') format('woff2');
  font-weight: 300; font-display: swap;
}
@font-face {
  font-family: 'Paperozi';
  src: url('https://cdn.jsdelivr.net/gh/projectnoonnu/2408-3@1.0/Paperlogy-4Regular.woff2') format('woff2');
  font-weight: 400; font-display: swap;
}
@font-face {
  font-family: 'Paperozi';
  src: url('https://cdn.jsdelivr.net/gh/projectnoonnu/2408-3@1.0/Paperlogy-5Medium.woff2') format('woff2');
  font-weight: 500; font-display: swap;
}
@font-face {
  font-family: 'Paperozi';
  src: url('https://cdn.jsdelivr.net/gh/projectnoonnu/2408-3@1.0/Paperlogy-6SemiBold.woff2') format('woff2');
  font-weight: 600; font-display: swap;
}
@font-face {
  font-family: 'Paperozi';
  src: url('https://cdn.jsdelivr.net/gh/projectnoonnu/2408-3@1.0/Paperlogy-7Bold.woff2') format('woff2');
  font-weight: 700; font-display: swap;
}
@font-face {
  font-family: 'Paperozi';
  src: url('https://cdn.jsdelivr.net/gh/projectnoonnu/2408-3@1.0/Paperlogy-8ExtraBold.woff2') format('woff2');
  font-weight: 800; font-display: swap;
}
@font-face {
  font-family: 'Paperozi';
  src: url('https://cdn.jsdelivr.net/gh/projectnoonnu/2408-3@1.0/Paperlogy-9Black.woff2') format('woff2');
  font-weight: 900; font-display: swap;
}

/* ----------------------------------------------------------------
   TOKENS — M3-style surface ramp + 3-channel accents
---------------------------------------------------------------- */
:root {
  /* Surfaces */
  --surface:                     #0b1326;
  --surface-dim:                 #0b1326;
  --surface-bright:              #31394d;
  --surface-container-lowest:    #060e20;
  --surface-container-low:       #131b2e;
  --surface-container:           #171f33;
  --surface-container-high:      #222a3d;
  --surface-container-highest:   #2d3449;
  --surface-elevated:            #1E293B;
  --surface-variant:             #2d3449;
  --slate-800:                   #1E293B;
  --slate-900:                   #0F172A;
  --slate-950:                   #060e20;

  /* Text */
  --on-surface:                  #dae2fd;
  --on-surface-variant:          #bec8d2;
  --text-primary:                #F8FAFC;
  --text-secondary:              #94A3B8;
  --t-dim:                       #88929b;

  /* Outlines / rules */
  --outline:                     #88929b;
  --outline-variant:             #3e4850;
  --rule:                        rgba(190,200,210,0.10);
  --rule-strong:                 rgba(190,200,210,0.18);

  /* Primary — sky blue */
  --primary:                     #89ceff;
  --primary-fixed:               #c9e6ff;
  --primary-container:           #0ea5e9;
  --on-primary:                  #00344d;
  --on-primary-container:        #003751;
  --on-primary-fixed:            #001e2f;
  --on-primary-fixed-variant:    #004c6e;
  --inverse-primary:             #006591;

  /* Cyan accent — VU meter color, faders */
  --cyan-accent:                 #2DD4BF;
  --cyan-accent-dim:             #14b8a6;

  /* Secondary — purple, creative modifiers */
  --secondary:                   #ddb7ff;
  --secondary-container:         #6f00be;
  --on-secondary:                #490080;
  --on-secondary-container:      #d6a9ff;

  /* Tertiary — amber, warm metadata + alerts */
  --tertiary:                    #ffb95f;
  --tertiary-container:          #d88a00;
  --on-tertiary:                 #472a00;
  --on-tertiary-container:       #4a2c00;

  /* Error */
  --error:                       #ffb4ab;
  --error-container:             #93000a;
  --on-error:                    #690005;

  /* Radii — tight, pro-tool */
  --r-default: 2px;
  --r-lg:      4px;
  --r-xl:      8px;
  --r-2xl:     12px;
  --r-full:    9999px;

  /* Spacing — strict 4px grid */
  --s-1:  4px;  --s-2:  8px;  --s-3: 12px;  --s-4: 16px;
  --s-5: 20px;  --s-6: 24px;  --s-7: 28px;  --s-8: 32px;
  --s-10: 40px; --s-12: 48px; --s-16: 64px;

  /* Typography — single typeface (Paperozi) across all roles */
  --f-display: "Paperozi", "Pretendard", system-ui, sans-serif;
  --f-body:    "Paperozi", "Pretendard", system-ui, sans-serif;
  --f-mono:    "Paperozi", "Pretendard", system-ui, sans-serif;
  --f-caps:    "Paperozi", "Pretendard", system-ui, sans-serif;

  --tracking-tight:   -0.02em;
  --tracking-body:    -0.005em;
  --tracking-label:    0.08em;
  --tracking-eyebrow:  0.16em;

  /* Glass — backdrop blur on panels */
  --glass-bg:    rgba(30, 41, 59, 0.55);
  --glass-bg-2:  rgba(30, 41, 59, 0.40);
  --glass-rule:  rgba(51, 65, 85, 0.55);

  /* Glows */
  --glow-primary: 0 0 0 1px rgba(137,206,255,0.20), 0 4px 18px rgba(14,165,233,0.18);
  --glow-cyan:    0 0 12px rgba(45,212,191,0.50);
  --lift:         0 18px 40px rgba(0,0,0,0.45), 0 2px 6px rgba(0,0,0,0.32);
}

/* Light theme — softer, but still high-tech */
html[data-theme="light"] {
  --surface:                   #f1f5fb;
  --surface-dim:               #e8eef7;
  --surface-bright:             #ffffff;
  --surface-container-lowest:   #ffffff;
  --surface-container-low:      #fafbfd;
  --surface-container:          #eff3f9;
  --surface-container-high:     #e3e9f1;
  --surface-container-highest:  #d4dbe6;
  --surface-elevated:           #ffffff;
  --surface-variant:            #d4dbe6;
  --slate-800:                  #ffffff;
  --slate-900:                  #ffffff;
  --slate-950:                  #ffffff;

  --on-surface:                 #0F172A;
  --on-surface-variant:         #475569;
  --text-primary:               #0F172A;
  --text-secondary:             #64748b;
  --t-dim:                      #64748b;

  --outline:                    #94a3b8;
  --outline-variant:            #cbd5e1;
  --rule:                       rgba(15,23,42,0.10);
  --rule-strong:                rgba(15,23,42,0.18);

  --primary:                    #0284c7;
  --primary-fixed:              #075985;
  --primary-container:          #0ea5e9;
  --on-primary:                 #ffffff;
  --on-primary-container:       #ffffff;

  --cyan-accent:                #0d9488;
  --cyan-accent-dim:            #0f766e;

  --secondary:                  #7c3aed;
  --on-secondary-container:     #5b21b6;

  --tertiary:                   #d97706;
  --on-tertiary-container:      #92400e;

  --glass-bg:    rgba(255,255,255,0.65);
  --glass-bg-2:  rgba(255,255,255,0.45);
  --glass-rule:  rgba(15,23,42,0.12);

  --glow-primary: 0 0 0 1px rgba(2,132,199,0.15), 0 4px 18px rgba(14,165,233,0.12);
  --glow-cyan:    0 0 8px rgba(13,148,136,0.30);
  --lift:         0 16px 40px rgba(15,23,42,0.10), 0 2px 6px rgba(15,23,42,0.06);
}

/* Warm Sand theme — warm cream/beige light surfaces with a navy
   primary identity and coral accent. Distinct from the cool Light
   theme: warmer hue, navy filled-pills for active nav, coral CTAs.
   (Internal data-theme key is still "graphite" for backwards
   compatibility with users' saved theme preference.) */
html[data-theme="graphite"] {
  --surface:                    #F3EFE7;
  --surface-dim:                #ECE5D7;
  --surface-bright:             #FFFFFF;
  --surface-container-lowest:   #F7F3EA;
  --surface-container-low:      #E8E1D5;
  --surface-container:          #FFFDF8;
  --surface-container-high:     #FAF6EE;
  --surface-container-highest:  #FFFFFF;
  --surface-elevated:           #FFFDF8;
  --surface-variant:            #E8E1D5;
  --slate-800:                  #FFFDF8;
  --slate-900:                  #F3EFE7;
  --slate-950:                  #F7F3EA;

  --on-surface:                 #202334;
  --on-surface-variant:         #2F3A56;
  --text-primary:               #202334;
  --text-secondary:             #3B4358;
  --text-3:                     #5C6376;
  --text-4:                     #7A8194;
  --t-dim:                      #3B4358;

  --outline:                    #C7BCA8;
  --outline-variant:            #D8CFC0;
  --rule:                       rgba(47,58,86,0.08);
  --rule-strong:                rgba(47,58,86,0.16);

  --primary:                    #FF8A65;
  --primary-fixed:              #FF7043;
  --primary-container:          #2F3A56;
  --on-primary:                 #FFFFFF;
  --on-primary-container:       #FFFFFF;

  --cyan-accent:                #3FBFA8;
  --cyan-accent-dim:            #2EA992;

  --secondary:                  #2F3A56;
  --on-secondary-container:     #FFFFFF;

  --tertiary:                   #FF8A65;
  --on-tertiary-container:      #FF7043;

  --glass-bg:    rgba(255,253,248,0.82);
  --glass-bg-2:  rgba(255,253,248,0.55);
  --glass-rule:  rgba(47,58,86,0.10);

  --glow-primary: 0 0 0 1px rgba(255,138,101,0.22), 0 4px 18px rgba(255,138,101,0.18);
  --glow-cyan:    0 0 8px rgba(63,191,168,0.32);
  --lift:         0 16px 40px rgba(47,58,86,0.10), 0 2px 6px rgba(47,58,86,0.06);
}

/* ----------------------------------------------------------------
   BASE
---------------------------------------------------------------- */
*, *::before, *::after { box-sizing: border-box; }

html, body {
  background: var(--surface);
  color: var(--on-surface);
  font-family: "Paperozi", "Pretendard", system-ui, sans-serif;
  letter-spacing: var(--tracking-body);
  font-feature-settings: "tnum", "kern";
}
body.app-body {
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  font-size: 14px;
  min-height: 100vh;
}
button { font-family: inherit; }
hr { border: 0; border-top: 1px solid var(--rule); margin: var(--s-4) 0; }

button:focus-visible, a:focus-visible, input:focus-visible,
textarea:focus-visible, select:focus-visible {
  outline: 1.5px solid var(--primary);
  outline-offset: 2px;
  border-radius: var(--r-lg);
}

/* selection */
::selection { background: rgba(137,206,255,0.30); color: var(--text-primary); }

/* tabular numerals where data lives */
.nav-badge, .ai-mirror, .header-ai-lang, .track-no, .track-bpm,
.lang-row [class*="readout"], #lyrics-stats, #style-stats,
.preset-card pre, .chip, .pal-item .tag, #tag-rows .tag-name,
.track-style-line, .track-lyrics, code, .footer-disclaimer,
input[type="number"], textarea.input,
.text-mono, .font-mono { font-variant-numeric: tabular-nums; }

/* ----------------------------------------------------------------
   MATERIAL SYMBOLS
---------------------------------------------------------------- */
.material-symbols-outlined {
  font-variation-settings: 'FILL' 0, 'wght' 400, 'GRAD' 0, 'opsz' 24;
  display: inline-block;
  line-height: 1;
  text-transform: none;
  letter-spacing: normal;
  white-space: nowrap;
  user-select: none;
}

/* ----------------------------------------------------------------
   APP SHELL
---------------------------------------------------------------- */
.app-shell {
  display: flex;
  min-height: 100vh;
  background:
    radial-gradient(1200px 600px at 8% -8%, rgba(14,165,233,0.10), transparent 60%),
    radial-gradient(900px 600px at 100% 0%, rgba(111,0,190,0.06), transparent 60%),
    var(--surface);
}
html[data-theme="light"] .app-shell {
  background:
    radial-gradient(900px 600px at 8% -8%, rgba(14,165,233,0.08), transparent 60%),
    radial-gradient(800px 500px at 100% 0%, rgba(124,58,237,0.05), transparent 60%),
    var(--surface);
}
html[data-theme="graphite"] .app-shell {
  background:
    radial-gradient(1100px 600px at 6% -10%, rgba(255,138,101,0.08), transparent 60%),
    radial-gradient(900px 540px at 100% 0%, rgba(63,191,168,0.05), transparent 60%),
    var(--surface);
}
html[data-theme="graphite"] .app-sidebar { background: var(--surface-container-low); }

.app-sidebar {
  width: 240px;
  flex-shrink: 0;
  background: var(--surface-container-low);
  border-right: 1px solid var(--outline-variant);
  padding: var(--s-4) var(--s-3);
  display: flex; flex-direction: column;
  position: sticky; top: 0;
  height: 100vh;
  z-index: 30;
}
html[data-theme="light"] .app-sidebar { background: var(--surface-container); }

.app-main { flex: 1; min-width: 0; max-width: 100%; }

/* ────────────────────────────────────────────────────────────
   SPLIT MODE — app on left half of screen, Suno on right
   Activated by html[data-split="1"]. Tightens every horizontal
   measurement so the builder/album/dance views fit comfortably
   in a ~50vw column without horizontal scroll.
──────────────────────────────────────────────────────────── */
html[data-split="1"] .app-sidebar {
  width: 168px;
  padding: var(--s-3) var(--s-2);
}
html[data-split="1"] .brand-wordmark { padding: var(--s-1) var(--s-2) var(--s-3); gap: var(--s-2); }
html[data-split="1"] .brand-dot { width: 28px; height: 28px; }
html[data-split="1"] .brand-name { font-size: 16px; }
html[data-split="1"] .brand-ko { font-size: 9.5px; }
html[data-split="1"] .side-nav .tab-btn,
html[data-split="1"] .side-action,
html[data-split="1"] .theme-toggle { padding: 7px var(--s-2); font-size: 12px; }
html[data-split="1"] .nav-badge { font-size: 10.5px; padding: 1px 6px; }
html[data-split="1"] main.px-7 { padding: var(--s-4) var(--s-4) var(--s-10); }
html[data-split="1"] .topbar { padding: 0 var(--s-4); height: 52px; }
html[data-split="1"] .topbar-right { font-size: 12px !important; }
/* In split mode the workflow chart is JS-relocated into the sidebar
   (see initSplit). Style it as a compact vertical strip that fits
   the narrow sidebar column. */
.sidebar-workflow-slot { width: 100%; margin-top: var(--s-2); }
.sidebar-workflow-slot:empty { display: none; }
.app-sidebar .workflow-chart.in-sidebar {
  margin: 0 0 var(--s-3);
  padding: var(--s-2) var(--s-3);
  border-radius: var(--r-md);
  box-shadow: none;
  background: var(--surface-container);
  border-color: var(--rule);
}
.app-sidebar .workflow-chart.in-sidebar::before { display: none; }
.app-sidebar .workflow-chart.in-sidebar .workflow-eyebrow {
  font-size: 10.5px;
  letter-spacing: 0.06em;
}
.app-sidebar .workflow-chart.in-sidebar .workflow-toggle {
  padding: 2px 7px;
  font-size: 10px;
}
.app-sidebar .workflow-chart.in-sidebar .workflow-head { margin-bottom: var(--s-2); }
.app-sidebar .workflow-chart.in-sidebar .workflow-steps {
  flex-direction: column;
  gap: 4px;
}
.app-sidebar .workflow-chart.in-sidebar .workflow-step {
  flex: 1 1 100%;
  min-width: 0;
  padding: 6px 8px;
  gap: 6px;
}
.app-sidebar .workflow-chart.in-sidebar .workflow-num {
  width: 20px; height: 20px;
  font-size: 11px;
  flex-shrink: 0;
}
.app-sidebar .workflow-chart.in-sidebar .workflow-title { font-size: 12.5px; }
.app-sidebar .workflow-chart.in-sidebar .workflow-desc {
  font-size: 11px;
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.app-sidebar .workflow-chart.in-sidebar .workflow-arrow {
  display: none;
}
.app-sidebar .workflow-chart.in-sidebar .workflow-pill { font-size: 9.5px; padding: 1px 5px; }
.app-sidebar .workflow-chart.in-sidebar .workflow-tip {
  font-size: 10.5px;
  line-height: 1.5;
  padding: 7px 10px;
  margin-top: var(--s-2);
}
/* When the user has explicitly collapsed the chart, respect it even
   in the sidebar */
.app-sidebar .workflow-chart.in-sidebar.collapsed .workflow-steps,
.app-sidebar .workflow-chart.in-sidebar.collapsed .workflow-tip { display: none; }
html[data-split="1"] .hero-input { font-size: 22px; }
html[data-split="1"] .panel { padding: var(--s-3) var(--s-4); }
html[data-split="1"] .panel-title { font-size: 16px; }

/* Stack the 8/4 grid into a single column in split mode */
html[data-split="1"] #view-builder .grid.grid-cols-12 > .col-span-12.lg\:col-span-8,
html[data-split="1"] #view-builder .grid.grid-cols-12 > .col-span-12.lg\:col-span-4,
html[data-split="1"] #view-album   .grid.grid-cols-12 > .col-span-12.lg\:col-span-5,
html[data-split="1"] #view-album   .grid.grid-cols-12 > .col-span-12.lg\:col-span-7,
html[data-split="1"] #view-guide   .grid.grid-cols-12 > [class*="col-span"],
html[data-split="1"] #view-dance   .grid.grid-cols-12 > [class*="col-span"] {
  grid-column: span 12 / span 12;
}
html[data-split="1"] .dance-grid { grid-template-columns: 1fr; max-height: none; }
html[data-split="1"] .palette-list { max-height: 32vh; }

/* Album track card stays flex but text resizes */
html[data-split="1"] .track-card { padding: var(--s-3) var(--s-4); gap: var(--s-3); }
html[data-split="1"] .track-no { font-size: 24px; }
html[data-split="1"] .track-title { font-size: 14px; }

/* Modal narrower in split mode */
html[data-split="1"] .help-modal-content { max-width: 96vw; }
html[data-split="1"] .help-body { padding: var(--s-4) var(--s-4); }
html[data-split="1"] .help-toc a { font-size: 10.5px; padding: 3px 8px; }


/* ──────────────────────────────────────────────────────────────
   MOBILE — drawer sidebar + single-column layout.
   Below 768px the sidebar becomes a slide-out drawer triggered by a
   hamburger in the topbar. Below 640px we additionally tighten
   spacings, enlarge tap targets (44px min) and force single-column
   grids so full editing remains practical on a phone.
────────────────────────────────────────────────────────────── */
.mobile-menu-btn {
  display: none;
  align-items: center; justify-content: center;
  width: 38px; height: 38px;
  margin-right: var(--s-2);
  border: 1px solid var(--outline-variant);
  border-radius: var(--r-md);
  background: var(--surface-container-low);
  color: var(--on-surface);
  cursor: pointer;
  transition: background 160ms ease, color 160ms ease, border-color 160ms ease;
}
.mobile-menu-btn:hover {
  background: var(--surface-container-high);
  border-color: var(--primary);
  color: var(--primary);
}
.sidebar-backdrop {
  display: none;
  position: fixed; inset: 0;
  z-index: 99;
  background: rgba(0,0,0,0.55);
  -webkit-backdrop-filter: blur(2px);
  backdrop-filter: blur(2px);
  animation: backdropIn 180ms ease forwards;
}
@keyframes backdropIn { from { opacity: 0; } to { opacity: 1; } }
html.sidebar-open .sidebar-backdrop { display: block; }

@media (max-width: 900px) {
  .mobile-menu-btn { display: inline-flex; }
  .topbar-right { display: none; }
  .app-shell { flex-direction: row; }
  .app-sidebar {
    position: fixed;
    top: 0; left: 0; bottom: 0;
    width: 280px;
    max-width: 84vw;
    height: 100dvh;
    z-index: 100;
    transform: translateX(-100%);
    transition: transform 260ms cubic-bezier(0.32, 0.72, 0.20, 1);
    border-right: 1px solid var(--outline);
    box-shadow: 12px 0 32px rgba(0,0,0,0.32);
    flex-direction: column;
    overflow-y: auto;
  }
  html.sidebar-open .app-sidebar { transform: translateX(0); }
  .app-sidebar .side-nav { flex-direction: column; }
  .app-sidebar .sidebar-footer { display: flex; flex-direction: column; }
  main.px-7 { padding: var(--s-4) var(--s-4) var(--s-8); }
  /* Single-column for all 12-col grids on tablet/phone */
  .grid.grid-cols-12 > [class*="col-span"] { grid-column: span 12 / span 12; }
  html[data-split="1"] .app-sidebar { width: 280px; }
}

@media (max-width: 640px) {
  .topbar { padding: 0 var(--s-3); height: 56px; }
  .topbar-left { gap: var(--s-1); }
  .hero-input { font-size: 20px; padding: var(--s-3) var(--s-3); }
  .panel { padding: var(--s-3) var(--s-4); }
  .panel-title { font-size: 15px; }
  .btn-primary, .btn-secondary, .btn-ghost { min-height: 40px; padding-left: 14px; padding-right: 14px; }
  .input, textarea.input { min-height: 40px; font-size: 14px; }
  textarea.input { min-height: 96px; }
  .chip-stack { gap: 4px; }
  .workflow-step { flex: 1 1 100%; min-width: 0; }
  .workflow-arrow { transform: rotate(90deg); padding: 2px 0; }
  /* Help modal full-width on phones */
  .help-modal-content { max-width: 96vw; max-height: 92dvh; }
  .modal-content { max-width: 96vw; }
}

/* ----------------------------------------------------------------
   BRAND — DAW masthead
---------------------------------------------------------------- */
.brand-wordmark {
  display: flex; align-items: center; gap: var(--s-3);
  text-decoration: none;
  padding: var(--s-2) var(--s-3) var(--s-4);
  border-radius: var(--r-lg);
}
.brand-dot {
  width: 36px; height: 36px;
  border-radius: var(--r-xl);
  background: var(--primary-container);
  display: grid; place-items: center;
  flex-shrink: 0;
  box-shadow: 0 0 0 1px rgba(137,206,255,0.18), 0 6px 22px rgba(14,165,233,0.22);
}
.brand-dot::before {
  content: '';
  width: 18px; height: 18px;
  background: var(--on-primary-container);
  -webkit-mask: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='currentColor'><path d='M9 18V5l12-2v13M6 21a3 3 0 1 1 0-6 3 3 0 0 1 0 6zM18 19a3 3 0 1 1 0-6 3 3 0 0 1 0 6z'/></svg>") center/contain no-repeat;
          mask: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='currentColor'><path d='M9 18V5l12-2v13M6 21a3 3 0 1 1 0-6 3 3 0 0 1 0 6zM18 19a3 3 0 1 1 0-6 3 3 0 0 1 0 6z'/></svg>") center/contain no-repeat;
}
.brand-text { display: flex; flex-direction: column; line-height: 1.05; gap: 2px; }
.brand-name {
  font-family: var(--f-display);
  font-weight: 700;
  font-size: 20px;
  letter-spacing: var(--tracking-tight);
  color: var(--primary);
}
.brand-ko {
  font-family: var(--f-caps);
  font-size: 11px;
  color: var(--on-surface-variant);
  letter-spacing: var(--tracking-label);
  text-transform: uppercase;
  font-weight: 700;
  opacity: 0.6;
}
.brand-version {
  display: inline-block;
  width: fit-content;
  margin-top: 3px;
  padding: 1px 8px;
  font-family: var(--f-mono);
  font-size: 10px;
  font-weight: 700;
  color: var(--cyan-accent);
  border: 1px solid color-mix(in srgb, var(--cyan-accent) 35%, transparent);
  background: color-mix(in srgb, var(--cyan-accent) 10%, transparent);
  border-radius: var(--r-full);
  letter-spacing: 0.04em;
  transition: filter 120ms ease, transform 120ms ease;
}
.brand-wordmark:hover .brand-version {
  filter: brightness(1.15);
  transform: translateY(-1px);
}

/* ----------------------------------------------------------------
   SIDEBAR NAV — DAW instrument panel
---------------------------------------------------------------- */
.side-nav {
  display: flex; flex-direction: column;
  gap: 2px;
  padding: var(--s-2) 0;
  border-top: 1px solid var(--outline-variant);
  margin-top: 0;
}
.side-nav .tab-btn {
  display: flex; align-items: center; gap: var(--s-3);
  padding: 9px var(--s-3);
  border-radius: var(--r-lg);
  color: var(--on-surface-variant);
  font-family: var(--f-caps);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: var(--tracking-label);
  text-transform: uppercase;
  width: 100%;
  text-align: left;
  background: transparent;
  border: 0;
  cursor: pointer;
  transition: background 120ms ease, color 120ms ease, transform 80ms ease;
}
.side-nav .tab-btn svg {
  width: 18px; height: 18px;
  flex-shrink: 0;
  opacity: 0.8;
}
.side-nav .tab-btn .material-symbols-outlined {
  font-size: 20px;
  flex-shrink: 0;
}
.side-nav .tab-btn:hover {
  background: var(--surface-container-highest);
  color: var(--on-surface);
}
.side-nav .tab-btn:hover svg { opacity: 1; color: var(--primary); }
.side-nav .tab-btn:active { transform: scale(0.97); }

.side-nav .tab-btn.active {
  background: var(--primary-container);
  color: var(--on-primary-container);
  font-weight: 700;
  box-shadow: 0 6px 18px rgba(14,165,233,0.30);
}
.side-nav .tab-btn.active svg,
.side-nav .tab-btn.active .material-symbols-outlined { color: var(--on-primary-container); opacity: 1; }

.nav-badge {
  margin-left: auto;
  font-family: var(--f-mono);
  font-size: 11.5px;
  color: var(--text-secondary);
  font-weight: 700;
  letter-spacing: 0.02em;
  padding: 2px 7px;
  border-radius: var(--r-default);
  background: var(--surface-container-high);
}
.side-nav .tab-btn.active .nav-badge {
  background: rgba(0,0,0,0.20);
  color: var(--on-primary-container);
}
.nav-badge.nav-badge-ai {
  background: var(--cyan-accent);
  color: var(--slate-900);
  font-size: 9.5px;
  letter-spacing: 0.10em;
  text-transform: uppercase;
}
.side-nav .tab-btn.active .nav-badge.nav-badge-ai {
  background: rgba(0,0,0,0.25);
  color: var(--on-primary-container);
}

/* AI search artist card — visually distinct from regular preset cards */
.search-artist-card {
  background: linear-gradient(135deg,
    color-mix(in srgb, var(--cyan-accent) 8%, var(--surface-container-low)) 0%,
    color-mix(in srgb, var(--primary) 6%, var(--surface-container-low)) 100%);
  border: 1px solid color-mix(in srgb, var(--cyan-accent) 28%, var(--outline-variant));
}
.search-song-card { position: relative; }
.search-song-card .actions { margin-top: var(--s-2); }
.search-example {
  font-size: 10.5px !important;
  padding: 3px 9px !important;
  min-height: 0 !important;
}
.search-mode-row {
  display: flex; align-items: center; gap: var(--s-2);
  flex-wrap: wrap;
}
.search-web-toggle {
  padding: 4px 10px;
  border-radius: var(--r-md);
  border: 1px solid var(--outline-variant);
  background: var(--surface-container-low);
  cursor: pointer;
  transition: border-color 160ms ease, background 160ms ease;
}
.search-web-toggle:has(input:checked) {
  border-color: var(--cyan-accent);
  background: color-mix(in srgb, var(--cyan-accent) 10%, var(--surface-container-low));
  color: var(--cyan-accent);
}
#search-cost-hint {
  font-family: var(--f-mono);
  font-feature-settings: "tnum";
}
#search-cost-hint.cost-on { color: var(--tertiary); }
#search-cost-hint.cost-off { color: var(--text-secondary); }

/* ----------------------------------------------------------------
   SIDEBAR FOOTER
---------------------------------------------------------------- */
.sidebar-footer {
  margin-top: auto;
  padding-top: var(--s-3);
  border-top: 1px solid var(--outline-variant);
  display: flex; flex-direction: column;
  gap: 1px;
}
.side-action {
  display: flex; align-items: center; gap: var(--s-3);
  width: 100%;
  padding: var(--s-2) var(--s-3);
  border-radius: var(--r-lg);
  color: var(--on-surface-variant);
  font-family: var(--f-caps);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: var(--tracking-label);
  text-transform: uppercase;
  background: transparent;
  border: 0;
  cursor: pointer;
  text-align: left;
  transition: background 120ms ease, color 120ms ease;
}
.side-action svg { width: 18px; height: 18px; opacity: 0.7; }
.side-action:hover { background: var(--surface-container-highest); color: var(--on-surface); }
.side-action:hover svg { opacity: 1; color: var(--primary); }

.theme-toggle {
  display: flex; align-items: center;
  padding: var(--s-2) var(--s-3);
  gap: var(--s-2);
}
.theme-toggle-label {
  font-family: var(--f-caps);
  font-size: 11px;
  font-weight: 700;
  color: var(--on-surface-variant);
  margin-right: auto;
  letter-spacing: var(--tracking-label);
  text-transform: uppercase;
}
.theme-switch {
  position: relative;
  width: 36px; height: 18px;
  border-radius: var(--r-full);
  background: var(--surface-container-highest);
  border: 1px solid var(--outline-variant);
  cursor: pointer;
  padding: 0;
  transition: background 200ms ease, border-color 200ms ease, box-shadow 200ms ease;
}
.theme-switch::after {
  content: '';
  position: absolute;
  top: 1px; left: 1px;
  width: 14px; height: 14px;
  border-radius: 50%;
  background: var(--on-surface-variant);
  transition: transform 200ms cubic-bezier(0.34, 1.4, 0.64, 1), background 200ms ease;
}
html[data-theme="light"] #theme-switch {
  background: var(--primary);
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(2,132,199,0.15);
}
html[data-theme="light"] #theme-switch::after { transform: translateX(18px); background: #ffffff; }

html[data-split="1"] #split-switch {
  background: var(--cyan-accent, #2dd4bf);
  border-color: var(--cyan-accent, #2dd4bf);
  box-shadow: 0 0 0 3px rgba(45, 212, 191, 0.18);
}
html[data-split="1"] #split-switch::after { transform: translateX(18px); background: #0f172a; }

/* 3-state theme segmented control — Dark · Graphite · Light */
.theme-seg {
  display: inline-flex;
  background: var(--surface-container-highest);
  border: 1px solid var(--outline-variant);
  border-radius: var(--r-full);
  padding: 2px;
  gap: 1px;
}
.theme-seg .seg-btn {
  width: 22px; height: 18px;
  border: 0;
  background: transparent;
  color: var(--on-surface-variant);
  border-radius: var(--r-full);
  cursor: pointer;
  padding: 0;
  display: grid; place-items: center;
  transition: background 160ms ease, color 160ms ease, box-shadow 160ms ease;
}
.theme-seg .seg-btn:hover { color: var(--on-surface); }
.theme-seg .seg-btn[aria-pressed="true"] {
  background: var(--primary-container);
  color: var(--on-primary-container);
  box-shadow: 0 1px 4px rgba(0,0,0,0.25);
}

.brand-by-line {
  margin-top: var(--s-3);
  padding: 0 var(--s-3);
  font-family: var(--f-caps);
  font-size: 10px;
  color: var(--text-secondary);
  letter-spacing: var(--tracking-eyebrow);
  text-transform: uppercase;
  font-weight: 700;
  opacity: 0.5;
}
.brand-by-line a { color: var(--on-surface-variant); text-decoration: none; }
.brand-by-line a:hover { color: var(--primary); }

/* ----------------------------------------------------------------
   TOPBAR — TopAppBar
---------------------------------------------------------------- */
.topbar {
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 var(--s-7);
  height: 64px;
  gap: var(--s-3);
  border-bottom: 1px solid var(--outline-variant);
  background: var(--surface-dim);
  position: sticky; top: 0; z-index: 20;
  backdrop-filter: blur(12px);
}
.topbar-eyebrow {
  font-family: var(--f-caps);
  font-size: 11px;
  letter-spacing: var(--tracking-label);
  color: var(--primary);
  font-weight: 700;
  text-transform: uppercase;
  padding-bottom: 4px;
  border-bottom: 2px solid var(--primary);
}
.topbar-left { display: flex; align-items: center; gap: var(--s-5); }
.topbar-dot {
  width: 4px; height: 4px;
  border-radius: 0;
  background: var(--cyan-accent);
  box-shadow: var(--glow-cyan);
}
.header-ai-chip {
  display: inline-flex; align-items: center; gap: var(--s-2);
  padding: 4px var(--s-3);
  background: var(--surface-container-low);
  border: 1px solid var(--outline-variant);
  border-radius: var(--r-lg);
  font-family: var(--f-caps);
  font-size: 11px;
  letter-spacing: var(--tracking-label);
  text-transform: uppercase;
  transition: border-color 120ms ease;
}
.header-ai-chip:hover { border-color: var(--primary); }
.header-ai-provider { color: var(--primary); font-weight: 700; }
.header-ai-lang {
  color: var(--text-secondary);
  font-family: var(--f-mono);
  font-size: 10px;
  letter-spacing: 0.02em;
}

main.px-7 { padding: var(--s-6) var(--s-7) var(--s-12); max-width: 100%; }

/* ----------------------------------------------------------------
   HERO — song title slate
---------------------------------------------------------------- */
.hero-strip {
  padding: 0 0 var(--s-3);
  border: 0;
  background: transparent;
  border-radius: 0;
  border-bottom: 1px solid var(--outline-variant);
  margin-bottom: var(--s-6);
}
.hero-title-row { display: flex; align-items: center; gap: var(--s-3); }
.hero-input {
  flex: 1;
  background: transparent;
  border: 0;
  color: var(--text-primary);
  font-family: var(--f-display);
  font-size: 32px;
  font-weight: 700;
  letter-spacing: var(--tracking-tight);
  padding: var(--s-1) 0;
  outline: none;
}
.hero-input::placeholder { color: var(--text-secondary); font-weight: 600; opacity: 0.5; }

/* ----------------------------------------------------------------
   PANELS — glass over surface
---------------------------------------------------------------- */
.panel {
  background: var(--glass-bg);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border: 1px solid var(--glass-rule);
  border-radius: var(--r-xl);
  padding: var(--s-5);
  transition: border-color 150ms ease;
}
.panel:hover { border-color: rgba(137,206,255,0.22); }

.panel-header {
  display: flex; align-items: center; gap: var(--s-2);
  margin-bottom: var(--s-4);
  padding-bottom: var(--s-3);
  border-bottom: 1px solid var(--outline-variant);
}
.panel-title {
  font-family: var(--f-display);
  font-weight: 600;
  font-size: 20px;
  letter-spacing: var(--tracking-tight);
  color: var(--primary);
  text-transform: uppercase;
}
.panel-header > .text-xs,
.panel-header > .text-xs.ml-auto {
  font-family: var(--f-caps);
  font-size: 10px;
  letter-spacing: var(--tracking-label);
  text-transform: uppercase;
  color: var(--text-secondary);
  opacity: 0.7;
}

/* AI panel — primary glow border */
.ai-panel {
  background: var(--surface-elevated);
  border: 2px solid rgba(137,206,255,0.20);
  box-shadow: var(--glow-primary);
}
.ai-panel .panel-title { color: var(--primary); }
.console-panel .panel-title,
.palette-panel .panel-title { color: var(--cyan-accent); }
.lyrics-panel .panel-title { color: var(--primary); }

.step-badge, .ai-step, .step-zero, .console-icon, .hero-step, .hero-label,
.panel-title::before, .hero-strip::before, .hero-strip::after,
.panel::before, body.app-body::after { display: none !important; content: none !important; }

/* ----------------------------------------------------------------
   FORM FIELDS — recessed into hardware
---------------------------------------------------------------- */
.field { display: flex; flex-direction: column; gap: var(--s-2); }
.field-label {
  font-family: var(--f-caps);
  font-size: 11px;
  color: var(--primary);
  font-weight: 700;
  letter-spacing: var(--tracking-label);
  text-transform: uppercase;
}

.input {
  background: var(--surface-container-lowest);
  color: var(--on-surface);
  border: 1px solid var(--outline-variant);
  border-radius: var(--r-lg);
  padding: 8px 12px;
  font-family: var(--f-body);
  font-size: 14px;
  letter-spacing: var(--tracking-body);
  outline: none;
  width: 100%;
  box-shadow: inset 0 1px 2px rgba(0,0,0,0.20);
  transition: border-color 120ms ease, background 120ms ease, box-shadow 120ms ease;
}
.input::placeholder { color: var(--text-secondary); opacity: 0.5; }
.input:hover { border-color: var(--outline); }
.input:focus {
  border-color: var(--primary);
  background: var(--surface-container-low);
  box-shadow: 0 0 0 3px rgba(137,206,255,0.18), inset 0 1px 2px rgba(0,0,0,0.20);
}
/* Warm Sand uses a coral primary against light cream surfaces; the
   focus ring needs a softer inset shadow so the input doesn't read
   as recessed-dark on the light substrate. */
html[data-theme="graphite"] .input:focus {
  box-shadow: 0 0 0 3px rgba(255,138,101,0.28), inset 0 1px 2px rgba(47,58,86,0.06);
}
html[data-theme="graphite"] .input {
  box-shadow: inset 0 1px 2px rgba(47,58,86,0.05);
}
/* Default 0.5 placeholder opacity washes out against the cream
   substrate. Bump to 0.72 so placeholder copy reads as solid dark
   grey, not faded ghost text. */
html[data-theme="graphite"] .input::placeholder,
html[data-theme="graphite"] .hero-input::placeholder {
  opacity: 0.72;
}

/* AI 중지 — generation-cancel needs to read as an active control
   while generation is running, not a tertiary "ghost" link. */
#ai-stop {
  background: transparent;
  color: #ef4444;
  border: 1px solid #ef4444;
  border-radius: var(--r-lg);
  font-family: var(--f-caps);
  font-weight: 700;
  font-size: 12px;
  letter-spacing: var(--tracking-label);
  text-transform: uppercase;
  padding: 7px 12px;
  cursor: pointer;
  transition: background 120ms ease, color 120ms ease;
}
#ai-stop:hover { background: #ef4444; color: #ffffff; }

/* Lift the Tailwind "text-xs / text-[10px] / text-[11px]" captions
   so legend rows, stats, and helper sub-text stop disappearing on
   higher-resolution displays. */
.text-xs { font-size: 12.5px !important; line-height: 1.45 !important; }
.text-\[10px\] { font-size: 11px !important; }
.text-\[11px\] { font-size: 12px !important; }
textarea.input {
  resize: vertical;
  line-height: 1.65;
  font-family: var(--f-mono);
  font-size: 14.5px;
}
/* Tailwind's `text-sm` (≈13.125px) was applied to Style/Lyrics
   textareas before — beat it back so long-form lyric editing stays
   comfortable. */
#style-out, #lyrics-out { font-size: 14.5px !important; line-height: 1.7; }
select.input {
  appearance: none;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='10' height='10' viewBox='0 0 24 24' fill='none' stroke='%2389ceff' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'><polyline points='6 9 12 15 18 9'/></svg>");
  background-repeat: no-repeat;
  background-position: right 12px center;
  padding-right: 32px;
  cursor: pointer;
}

/* ----------------------------------------------------------------
   BUTTONS — high-contrast cyan + ghost slate
---------------------------------------------------------------- */
.btn-primary {
  background: var(--primary);
  color: var(--on-primary);
  font-family: var(--f-caps);
  font-weight: 700;
  letter-spacing: var(--tracking-label);
  text-transform: uppercase;
  padding: 9px var(--s-4);
  border-radius: var(--r-lg);
  font-size: 12.5px;
  border: 0;
  cursor: pointer;
  box-shadow: 0 4px 14px rgba(137,206,255,0.22);
  transition: background 120ms ease, transform 80ms ease, box-shadow 120ms ease;
}
.btn-primary:hover {
  background: var(--primary-fixed);
  box-shadow: 0 6px 22px rgba(137,206,255,0.34);
}
.btn-primary:active { transform: scale(0.97); }
.btn-primary:disabled { opacity: 0.4; cursor: not-allowed; transform: none; box-shadow: none; }

.btn-secondary {
  background: var(--surface-container-high);
  color: var(--on-surface);
  font-family: var(--f-caps);
  font-weight: 700;
  letter-spacing: var(--tracking-label);
  text-transform: uppercase;
  padding: 8px 13px;
  border-radius: var(--r-lg);
  font-size: 12px;
  border: 1px solid var(--outline-variant);
  cursor: pointer;
  transition: all 120ms ease;
}
.btn-secondary:hover {
  background: var(--cyan-accent);
  color: var(--slate-900);
  border-color: var(--cyan-accent);
}
/* Copy actions are the workflow terminus — give them a strong cyan
   ring so the user spots them at a glance after generation. */
.btn-secondary[data-copy] {
  border-color: var(--cyan-accent);
  color: var(--cyan-accent);
  background: color-mix(in srgb, var(--cyan-accent) 8%, var(--surface-container-low));
}
.btn-secondary[data-copy]:hover {
  background: var(--cyan-accent);
  color: var(--slate-900);
}

.btn-ghost {
  color: var(--on-surface-variant);
  font-family: var(--f-caps);
  font-weight: 700;
  letter-spacing: var(--tracking-label);
  text-transform: uppercase;
  padding: 6px 10px;
  border-radius: var(--r-lg);
  font-size: 10.5px;
  background: transparent;
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 120ms ease;
}
.btn-ghost:hover {
  background: var(--surface-container-highest);
  color: var(--on-surface);
}

/* ----------------------------------------------------------------
   CHECKBOX
---------------------------------------------------------------- */
.check {
  display: inline-flex; align-items: center; gap: var(--s-2);
  color: var(--on-surface-variant);
  cursor: pointer;
  font-family: var(--f-caps);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: var(--tracking-label);
  text-transform: uppercase;
  transition: color 120ms ease;
}
.check:hover { color: var(--on-surface); }
.check input[type="checkbox"] {
  appearance: none;
  width: 14px; height: 14px;
  border: 1px solid var(--outline);
  border-radius: var(--r-default);
  background: var(--surface-container-high);
  cursor: pointer;
  position: relative;
  transition: all 120ms ease;
  flex-shrink: 0;
}
.check input[type="checkbox"]:checked {
  background: var(--primary);
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(137,206,255,0.18);
}
.check input[type="checkbox"]:checked::after {
  content: '';
  position: absolute;
  left: 3.5px; top: 0.5px;
  width: 4px; height: 8px;
  border: solid var(--on-primary);
  border-width: 0 1.5px 1.5px 0;
  transform: rotate(45deg);
}

/* ----------------------------------------------------------------
   STYLE CHIPS — category-coded with vibrant left border
---------------------------------------------------------------- */
.chip-stack {
  display: flex; flex-wrap: wrap; gap: var(--s-2);
  padding: var(--s-3);
  background: var(--surface-container-lowest);
  border: 1px solid var(--outline-variant);
  border-radius: var(--r-lg);
  min-height: 64px;
  box-shadow: inset 0 1px 2px rgba(0,0,0,0.20);
}
.chip {
  display: inline-flex; align-items: center; gap: var(--s-1);
  background: var(--surface-container-highest);
  color: var(--on-surface-variant);
  padding: 3px 10px 3px var(--s-2);
  border-radius: var(--r-full);
  font-family: var(--f-mono);
  font-size: 12px;
  font-weight: 500;
  border: 1px solid var(--outline-variant);
  transition: border-color 120ms ease, color 120ms ease;
  letter-spacing: 0.01em;
}
.chip::before {
  content: '';
  width: 6px; height: 6px;
  border-radius: var(--r-full);
  background: var(--outline);
  flex-shrink: 0;
}
.chip:hover { border-color: var(--outline); color: var(--on-surface); }

/* category-coded variants */
.chip[data-src="artist"] {
  background: rgba(45,212,191,0.10);
  border-color: rgba(45,212,191,0.45);
  color: var(--cyan-accent);
}
.chip[data-src="artist"]::before { background: var(--cyan-accent); }

.chip[data-src="template"] {
  background: rgba(221,183,255,0.10);
  border-color: rgba(221,183,255,0.45);
  color: var(--secondary);
}
.chip[data-src="template"]::before { background: var(--secondary); }

.chip[data-src="ai"] {
  background: rgba(255,185,95,0.10);
  border-color: rgba(255,185,95,0.45);
  color: var(--tertiary);
}
.chip[data-src="ai"]::before { background: var(--tertiary); }

.chip.lyrics {
  background: rgba(137,206,255,0.10);
  border-color: rgba(137,206,255,0.45);
  color: var(--primary);
}
.chip.lyrics::before { background: var(--primary); }

/* Suno reflect colour-coding on the chip dot — overrides the
   source-based dot colour so the user sees adoption likelihood at a
   glance. The dot is the single source of truth; chip background
   stays muted to keep the row scannable. */
.chip[data-reflect="green"]::before  { background: #34d399; box-shadow: 0 0 6px rgba(52,211,153,0.55); }
.chip[data-reflect="yellow"]::before { background: #fbbf24; box-shadow: 0 0 6px rgba(251,191,36,0.40); }
.chip[data-reflect="red"]::before    { background: #f87171; box-shadow: 0 0 4px rgba(248,113,113,0.40); }
.chip[data-reflect="unknown"]::before { background: var(--outline); }
.chip[data-reflect="red"] { opacity: 0.7; }   /* gentle visual sink */

.chip button {
  color: inherit;
  opacity: 0.5;
  margin-left: 2px;
  background: transparent;
  border: 0;
  padding: 0;
  cursor: pointer;
  font-size: 14px;
  line-height: 1;
}
.chip button:hover { opacity: 1; }

/* ----------------------------------------------------------------
   SLIDERS — LED VU meter
---------------------------------------------------------------- */
.lang-row {
  background: var(--surface-container-lowest);
  border: 1px solid var(--outline-variant);
  border-radius: var(--r-lg);
  padding: var(--s-3) var(--s-4);
  box-shadow: inset 0 1px 2px rgba(0,0,0,0.20);
}
.lang-row + .lang-row { margin-top: var(--s-3); }

.lang-slider {
  appearance: none;
  -webkit-appearance: none;
  width: 100%;
  height: 4px;
  border-radius: var(--r-full);
  background: linear-gradient(to right,
    var(--cyan-accent) 0%, var(--cyan-accent) var(--pct, 0%),
    var(--surface-container-highest) var(--pct, 0%), var(--surface-container-highest) 100%);
  outline: none;
  cursor: pointer;
}
.lang-slider::-webkit-slider-thumb {
  -webkit-appearance: none; appearance: none;
  width: 16px; height: 16px;
  border-radius: 50%;
  background: var(--cyan-accent);
  cursor: pointer;
  border: 0;
  box-shadow: 0 0 10px rgba(45,212,191,0.60), 0 0 0 2px var(--surface);
  transition: transform 120ms ease, box-shadow 120ms ease;
}
.lang-slider:hover::-webkit-slider-thumb {
  transform: scale(1.15);
  box-shadow: 0 0 16px rgba(45,212,191,0.80), 0 0 0 2px var(--surface);
}
.lang-slider::-moz-range-thumb {
  width: 16px; height: 16px;
  border-radius: 50%;
  background: var(--cyan-accent);
  border: 0;
  cursor: pointer;
}

[id$="-readout"] {
  font-family: var(--f-mono) !important;
  font-feature-settings: "tnum";
  font-size: 11px !important;
  color: var(--cyan-accent) !important;
  letter-spacing: 0.02em;
  font-weight: 700;
}

/* ----------------------------------------------------------------
   CATEGORY CHIPS
---------------------------------------------------------------- */
.cat-row { display: flex; align-items: center; gap: var(--s-1); flex-wrap: wrap; }
.cat-chip {
  padding: 5px var(--s-3);
  border-radius: var(--r-lg);
  font-family: var(--f-caps);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: var(--tracking-label);
  text-transform: uppercase;
  color: var(--on-surface-variant);
  background: var(--surface-container-high);
  border: 1px solid var(--outline-variant);
  cursor: pointer;
  transition: all 120ms ease;
}
.cat-chip:hover {
  color: var(--on-surface);
  border-color: var(--primary);
}
.cat-chip.active {
  background: var(--primary);
  border-color: var(--primary);
  color: var(--on-primary);
  box-shadow: 0 4px 12px rgba(137,206,255,0.22);
}

/* ----------------------------------------------------------------
   AI PROVIDER TABS
---------------------------------------------------------------- */
.ai-options-row {
  display: flex; flex-wrap: wrap; align-items: center; gap: var(--s-3);
  margin-top: var(--s-3);
}
.ai-title-lang-wrap { display: inline-flex; align-items: center; gap: 6px; }
.ai-title-lang-wrap > span {
  font-family: var(--f-caps);
  font-size: 11px;
  letter-spacing: var(--tracking-label);
  text-transform: uppercase;
  color: var(--on-surface-variant);
}
select.ai-title-lang {
  width: auto;
  min-width: 9.5em;
  padding: 4px 26px 4px 10px;
  font-size: 12px;
  background-position: right 8px center;
}
.ai-mirrors { display: inline-flex; gap: var(--s-1); flex-wrap: wrap; }
.ai-mirror {
  font-family: var(--f-mono);
  font-feature-settings: "tnum";
  font-size: 10px;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: var(--r-full);
  border: 1px solid var(--outline-variant);
  color: var(--text-secondary);
  background: var(--surface-container-low);
  letter-spacing: 0.02em;
  text-transform: uppercase;
}

#ai-prov-tabs {
  display: inline-flex;
  background: var(--surface-container-lowest);
  border: 1px solid var(--outline-variant);
  border-radius: var(--r-lg);
  padding: 3px;
}
.ai-prov {
  padding: 5px var(--s-3);
  border-radius: var(--r-default);
  color: var(--on-surface-variant);
  font-family: var(--f-caps);
  font-weight: 700;
  font-size: 11px;
  letter-spacing: var(--tracking-label);
  text-transform: uppercase;
  border: 0;
  background: transparent;
  cursor: pointer;
  transition: all 120ms ease;
}
.ai-prov:hover { color: var(--on-surface); }
.ai-prov.active {
  background: var(--primary);
  color: var(--on-primary);
  box-shadow: inset 0 1px 2px rgba(0,0,0,0.25);
}

.ai-lock-badge {
  display: inline-flex; align-items: center; gap: 4px;
  font-family: var(--f-caps);
  font-size: 10px; font-weight: 700;
  padding: 2px 9px;
  border-radius: var(--r-full);
  color: var(--primary);
  background: rgba(137,206,255,0.10);
  border: 1px solid rgba(137,206,255,0.30);
  cursor: help;
  white-space: nowrap;
  letter-spacing: var(--tracking-label);
  text-transform: uppercase;
}
.ai-lock-badge.hidden { display: none; }

/* ----------------------------------------------------------------
   PALETTE
---------------------------------------------------------------- */
.palette-tab {
  padding: 3px 9px;
  border-radius: var(--r-default);
  color: var(--on-surface-variant);
  font-family: var(--f-caps);
  font-size: 10px;
  font-weight: 700;
  background: var(--surface-container-high);
  border: 0;
  cursor: pointer;
  letter-spacing: var(--tracking-label);
  text-transform: uppercase;
  transition: all 120ms ease;
}
.palette-tab:hover { color: var(--on-surface); background: var(--surface-container-highest); }
.palette-tab.active { color: var(--on-primary); background: var(--primary); }

.legend {
  display: flex; flex-wrap: wrap; gap: 4px var(--s-3);
  padding: 6px var(--s-3);
  background: var(--surface-container-lowest);
  border: 1px solid var(--outline-variant);
  border-radius: var(--r-lg);
  font-family: var(--f-caps);
  font-size: 10px;
  font-weight: 700;
  color: var(--on-surface-variant);
  letter-spacing: var(--tracking-label);
  text-transform: uppercase;
}
.legend-item { display: inline-flex; align-items: center; gap: 4px; }
.legend-dot { display: inline-block; width: 6px; height: 6px; border-radius: 999px; }
.dot-style  { background: var(--primary); }
.dot-lyrics { background: var(--cyan-accent); }
.dot-warn   { background: var(--tertiary); }

.palette-list {
  max-height: 42vh;
  overflow: auto;
  display: flex; flex-direction: column;
  gap: var(--s-1);
  padding-right: 4px;
  margin-top: var(--s-2);
}
.pal-item {
  display: flex; align-items: center; gap: var(--s-2);
  padding: var(--s-2) var(--s-3);
  background: var(--surface-container-low);
  border: 1px solid var(--outline-variant);
  border-radius: var(--r-lg);
  cursor: pointer;
  transition: all 120ms ease;
}
.pal-item:hover {
  background: var(--surface-container);
  border-color: var(--cyan-accent);
}
.pal-item .reflect-dot {
  width: 8px; height: 8px;
  border-radius: var(--r-full);
  background: var(--outline);
  flex-shrink: 0;
  align-self: center;
}
.pal-item[data-reflect="green"]  .reflect-dot { background: #34d399; box-shadow: 0 0 6px rgba(52,211,153,0.55); }
.pal-item[data-reflect="yellow"] .reflect-dot { background: #fbbf24; box-shadow: 0 0 6px rgba(251,191,36,0.40); }
.pal-item[data-reflect="red"]    .reflect-dot { background: #f87171; box-shadow: 0 0 4px rgba(248,113,113,0.40); }
.pal-item[data-reflect="red"]    { opacity: 0.7; }
.pal-item .tag {
  font-family: var(--f-mono);
  color: var(--cyan-accent);
  font-weight: 600;
  font-size: 12px;
}
.pal-item .ko {
  color: var(--text-secondary);
  font-size: 10.5px;
  opacity: 0.7;
}
.pal-item.lyrics .tag { color: var(--primary); }
.pal-item .add {
  margin-left: auto;
  opacity: 0;
  color: var(--cyan-accent);
  font-size: 14px;
  font-family: var(--f-mono);
}
.pal-item:hover .add { opacity: 1; }

/* ----------------------------------------------------------------
   TAG TABLE
---------------------------------------------------------------- */
#tag-rows tr { border-top: 1px solid var(--outline-variant); transition: background 120ms ease; }
#tag-rows tr:hover { background: var(--surface-container); }
#tag-rows td {
  padding: var(--s-2) var(--s-3);
  vertical-align: top;
  font-size: 13px;
  color: var(--on-surface);
}
#tag-rows .tag-name {
  font-family: var(--f-mono);
  color: var(--primary);
  font-weight: 600;
}
#tag-rows .tag-name.lyrics { color: var(--cyan-accent); }
#tag-rows .add-btn {
  background: var(--surface-container-high);
  color: var(--on-surface-variant);
  padding: 3px var(--s-2);
  border-radius: var(--r-default);
  font-family: var(--f-caps);
  font-size: 10px;
  font-weight: 700;
  border: 1px solid var(--outline-variant);
  cursor: pointer;
  letter-spacing: var(--tracking-label);
  text-transform: uppercase;
  transition: all 120ms ease;
}
#tag-rows .add-btn:hover { background: var(--primary); color: var(--on-primary); border-color: var(--primary); }

/* ----------------------------------------------------------------
   ARTIST / PRESET CARDS — workbench cards
---------------------------------------------------------------- */
.art-card {
  background: var(--surface-elevated);
  border: 1px solid var(--outline-variant);
  border-radius: var(--r-xl);
  padding: var(--s-4);
  transition: border-color 150ms ease, transform 150ms ease, box-shadow 150ms ease;
}
.art-card:hover {
  border-color: var(--primary-container);
  transform: translateY(-2px);
  box-shadow: 0 12px 32px rgba(0,0,0,0.30);
}
.art-card h3 {
  font-family: var(--f-display);
  font-weight: 600;
  font-size: 15px;
  color: var(--on-surface);
  letter-spacing: var(--tracking-tight);
}
.art-card .era {
  font-family: var(--f-caps);
  font-size: 10px;
  color: var(--tertiary);
  letter-spacing: var(--tracking-label);
  text-transform: uppercase;
  font-weight: 700;
}
.art-card .meta {
  font-size: 11.5px;
  color: var(--text-secondary);
  margin-top: 2px;
  font-variant-numeric: tabular-nums;
}
.art-card .style {
  font-size: 12.5px;
  color: var(--on-surface-variant);
  margin-top: var(--s-3);
  line-height: 1.55;
  max-height: 6em;
  overflow: hidden;
  padding-top: var(--s-3);
  border-top: 1px solid var(--outline-variant);
}
.art-card .struct {
  font-family: var(--f-mono);
  font-size: 10.5px;
  color: var(--cyan-accent);
  margin-top: var(--s-2);
  word-break: break-word;
  letter-spacing: 0.02em;
}
.art-card .actions { margin-top: var(--s-3); display: flex; gap: var(--s-1); flex-wrap: wrap; }

/* ----------------------------------------------------------------
   GUIDE
---------------------------------------------------------------- */
#guide-list li {
  padding: 6px var(--s-3);
  border-radius: var(--r-lg);
  cursor: pointer;
  color: var(--on-surface-variant);
  display: flex; align-items: center; gap: var(--s-2);
  font-family: var(--f-caps);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.02em;
  transition: all 120ms ease;
}
#guide-list li:hover { color: var(--on-surface); background: var(--surface-container-high); }
#guide-list li.active {
  background: var(--primary-container);
  color: var(--on-primary-container);
  font-weight: 700;
}
.guide-group-header {
  font-family: var(--f-caps);
  font-size: 10px !important;
  font-weight: 700;
  letter-spacing: var(--tracking-eyebrow);
  text-transform: uppercase;
  color: var(--primary) !important;
  background: transparent !important;
  padding: var(--s-3) var(--s-3) var(--s-1) !important;
  margin-top: var(--s-2);
  cursor: default !important;
  border-left: 0 !important;
}
.guide-group-header:first-child { margin-top: 0; }
.guide-group-tag {
  margin-left: auto;
  font-size: 10px;
  color: var(--text-secondary);
  font-family: var(--f-mono);
  background: transparent;
  padding: 0;
  border: 0;
}
#guide-content table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
  font-variant-numeric: tabular-nums;
}
#guide-content th, #guide-content td {
  border-top: 1px solid var(--outline-variant);
  padding: var(--s-2) var(--s-3);
  text-align: left; vertical-align: top;
}
#guide-content thead th {
  font-family: var(--f-caps);
  color: var(--primary);
  font-weight: 700;
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: var(--tracking-label);
  border-top: 0;
  border-bottom: 1px solid var(--outline);
}
#guide-content .tag { font-family: var(--f-mono); color: var(--cyan-accent); }

/* ----------------------------------------------------------------
   PRESETS
---------------------------------------------------------------- */
.preset-card {
  background: var(--surface-elevated);
  border: 1px solid var(--outline-variant);
  border-radius: var(--r-xl);
  padding: var(--s-4);
}
.preset-card h3 {
  font-family: var(--f-display);
  font-weight: 600;
  font-size: 14.5px;
  margin-bottom: var(--s-2);
  color: var(--on-surface);
  letter-spacing: var(--tracking-tight);
}
.preset-card pre {
  font-family: var(--f-mono);
  font-size: 11.5px;
  color: var(--on-surface-variant);
  background: var(--surface-container-lowest);
  padding: var(--s-2) var(--s-3);
  border-radius: var(--r-lg);
  border: 1px solid var(--outline-variant);
  max-height: 5em;
  overflow: hidden;
  white-space: pre-wrap;
  line-height: 1.55;
}
.preset-card .actions { margin-top: var(--s-2); display: flex; gap: var(--s-1); flex-wrap: wrap; }

/* ----------------------------------------------------------------
   ALBUM TRACK CARD
---------------------------------------------------------------- */
.track-card {
  background: var(--surface-elevated);
  border: 1px solid var(--outline-variant);
  border-radius: var(--r-xl);
  padding: var(--s-4) var(--s-5);
  display: flex;
  align-items: stretch;
  gap: var(--s-4);
  transition: border-color 150ms ease, transform 150ms ease, box-shadow 150ms ease;
}
.track-card:hover {
  border-color: var(--primary-container);
  transform: translateY(-1px);
  box-shadow: 0 8px 22px rgba(14,165,233,0.16);
}
.track-card.has-lyrics { border-color: rgba(45,212,191,0.40); }
.track-no-block {
  flex-shrink: 0;
  width: 60px;
  padding: 2px var(--s-4) 0 0;
  border-right: 1px solid var(--outline-variant);
  display: flex; flex-direction: column;
  align-items: flex-end;
  text-align: right;
}
.track-no {
  font-family: var(--f-display);
  font-feature-settings: "tnum";
  font-variant-numeric: tabular-nums;
  font-size: 32px;
  font-weight: 700;
  color: var(--text-secondary);
  letter-spacing: var(--tracking-tight);
  line-height: 1;
}
.track-card.has-lyrics .track-no { color: var(--cyan-accent); }
.track-bpm {
  font-family: var(--f-caps);
  font-size: 9.5px;
  color: var(--text-secondary);
  margin-top: var(--s-2);
  letter-spacing: var(--tracking-label);
  text-transform: uppercase;
  font-weight: 700;
}
.track-body { flex: 1 1 auto; min-width: 0; }
.track-title-row { display: flex; align-items: baseline; gap: var(--s-2); flex-wrap: wrap; }
.track-title {
  font-family: var(--f-display);
  font-weight: 700;
  font-size: 17px;
  color: var(--on-surface);
  letter-spacing: var(--tracking-tight);
}
.track-mood {
  display: inline-block;
  background: var(--surface-container-high);
  color: var(--tertiary);
  font-family: var(--f-caps);
  font-size: 10px;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: var(--r-default);
  border: 1px solid rgba(255,185,95,0.30);
  letter-spacing: var(--tracking-label);
  text-transform: uppercase;
}
.track-hook {
  font-size: 13px;
  color: var(--on-surface-variant);
  margin-top: var(--s-2);
  line-height: 1.55;
}
.track-style-line {
  font-family: var(--f-mono);
  font-size: 11px;
  color: var(--cyan-accent);
  margin-top: var(--s-2);
  line-height: 1.55;
  padding-top: var(--s-2);
  border-top: 1px solid var(--outline-variant);
}
.track-actions { margin-top: var(--s-3); display: flex; gap: var(--s-1); flex-wrap: wrap; }
.track-actions button { font-size: 10px; padding: 4px 9px; }
.track-lyrics {
  margin-top: var(--s-3);
  padding: var(--s-3) var(--s-4);
  background: var(--surface-container-lowest);
  border: 1px solid var(--outline-variant);
  border-radius: var(--r-lg);
  font-family: var(--f-mono);
  font-size: 11.5px;
  color: var(--on-surface);
  white-space: pre-wrap;
  line-height: 1.65;
  max-height: 256px;
  overflow: auto;
}

.album-saved-item {
  padding: var(--s-2) var(--s-3);
  background: var(--surface-container-low);
  border: 1px solid var(--outline-variant);
  border-radius: var(--r-lg);
  display: flex; align-items: center; gap: var(--s-2);
  cursor: pointer;
  transition: all 120ms ease;
}
.album-saved-item:hover { border-color: var(--primary); background: var(--surface-container); }
.album-saved-item .album-saved-name { color: var(--on-surface); font-weight: 600; font-size: 13px; }
.album-saved-item .album-saved-meta {
  font-family: var(--f-mono);
  font-size: 10px;
  color: var(--text-secondary);
  margin-left: auto;
  font-variant-numeric: tabular-nums;
}

/* ----------------------------------------------------------------
   MODAL
---------------------------------------------------------------- */
.modal {
  position: fixed; inset: 0;
  z-index: 50;
  display: flex; align-items: center; justify-content: center;
  padding: var(--s-4);
}
.modal.hidden { display: none; }
.modal-backdrop {
  position: absolute; inset: 0;
  background: rgba(6,14,32,0.65);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
}
.modal-content {
  position: relative;
  background: var(--surface-elevated);
  border: 1px solid var(--outline-variant);
  border-radius: var(--r-2xl);
  padding: var(--s-6);
  width: 100%; max-width: 540px;
  box-shadow: var(--lift), inset 0 1px 0 rgba(137,206,255,0.10);
  max-height: 90vh; overflow: auto;
}

/* ────────────────────────────────────────────────────────────
   HELP MODAL — manual-grade readability + visibility
──────────────────────────────────────────────────────────── */
.help-modal-content {
  max-width: 920px;
  max-height: 92vh;
  width: 96vw;
  padding: 0;
  overflow: hidden;
  display: flex; flex-direction: column;
  background: var(--surface);
  border: 1px solid var(--cyan-accent);
  box-shadow:
    0 0 0 1px rgba(45,212,191,0.20),
    0 24px 60px rgba(0,0,0,0.50);
}
.help-header {
  display: flex; align-items: flex-start; justify-content: space-between;
  padding: var(--s-4) var(--s-6);
  gap: var(--s-4);
  border-bottom: 1px solid var(--outline-variant);
  background: linear-gradient(135deg,
    rgba(45,212,191,0.10) 0%,
    rgba(137,206,255,0.06) 50%,
    rgba(221,183,255,0.08) 100%);
}
.help-header h2 {
  font-size: 22px;
  font-weight: 700;
  letter-spacing: var(--tracking-tight);
  color: var(--on-surface);
  margin: 0;
}
.help-subtitle {
  margin-top: 4px;
  font-size: 11.5px;
  color: var(--on-surface-variant);
  letter-spacing: 0.01em;
}
.help-close-x {
  flex-shrink: 0;
  background: var(--surface-container-high);
  color: var(--on-surface);
  border: 1px solid var(--outline-variant);
  border-radius: var(--r-default);
  width: 32px; height: 32px;
  display: grid; place-items: center;
  font-size: 16px;
  font-weight: 700;
  cursor: pointer;
  transition: all 120ms ease;
}
.help-close-x:hover { background: var(--cyan-accent); color: var(--slate-900); border-color: var(--cyan-accent); }

/* Table of contents — sticky navigation strip */
.help-toc {
  display: flex; flex-wrap: wrap; gap: 4px;
  padding: var(--s-2) var(--s-6);
  background: var(--surface-container);
  border-bottom: 1px solid var(--outline-variant);
}
.help-toc a {
  padding: 4px 10px;
  border-radius: var(--r-default);
  background: transparent;
  color: var(--on-surface-variant);
  font-size: 11.5px;
  font-weight: 600;
  text-decoration: none;
  transition: all 120ms ease;
  border: 1px solid transparent;
}
.help-toc a:hover {
  background: var(--surface-container-high);
  color: var(--cyan-accent);
  border-color: var(--cyan-accent);
}

.help-body {
  padding: var(--s-6) var(--s-7);
  overflow: auto;
  font-size: 15px;          /* ↑ from 13.5px for readability */
  line-height: 1.75;        /* ↑ generous line height */
  color: var(--on-surface);
  scroll-behavior: smooth;
}
.help-body section {
  margin-bottom: var(--s-10);
  padding-top: 2px;        /* anchor offset */
  scroll-margin-top: 12px;
}
.help-body section:last-child { margin-bottom: 0; }

.help-body h3 {
  font-size: 20px;          /* ↑ from 11px! main section headers are now actual headings */
  font-weight: 700;
  letter-spacing: var(--tracking-tight);
  text-transform: none;
  color: var(--cyan-accent);
  margin-bottom: var(--s-4);
  padding-bottom: var(--s-2);
  border-bottom: 2px solid var(--cyan-accent);
  display: flex; align-items: center; gap: var(--s-2);
}
.help-body h4 {
  font-size: 15.5px;        /* ↑ from 13px */
  font-weight: 700;
  color: var(--primary);
  letter-spacing: var(--tracking-tight);
  margin: var(--s-4) 0 var(--s-2);
}
.help-body p {
  margin-bottom: var(--s-3);
  color: var(--on-surface);
}
.help-body ul, .help-body ol {
  list-style: disc;
  padding-left: 1.4rem;
  margin-bottom: var(--s-3);
  color: var(--on-surface);
}
.help-body ol { list-style: decimal; }
.help-body li {
  margin-bottom: 6px;
  line-height: 1.7;
}
.help-body li::marker { color: var(--cyan-accent); font-weight: 700; }

/* Subtle card framing per topic */
/* Highlight a single key bullet inside a help-card */
.help-body li.help-highlight {
  background: rgba(45,212,191,0.08);
  border-left: 3px solid var(--cyan-accent);
  padding: 6px 10px;
  border-radius: var(--r-default);
  margin: 4px 0;
  list-style: none;
}
.help-body li.help-highlight::marker { content: ''; }

.help-card {
  background: var(--surface-container-low);
  border: 1px solid var(--outline-variant);
  border-left: 3px solid var(--cyan-accent);
  border-radius: var(--r-lg);
  padding: var(--s-3) var(--s-4);
  margin-bottom: var(--s-3);
}
.help-card h4 {
  margin-top: 0;
  color: var(--cyan-accent);
}

/* Callout block */
.help-callout {
  background: rgba(45,212,191,0.08);
  border: 1px solid rgba(45,212,191,0.30);
  border-radius: var(--r-lg);
  padding: var(--s-3) var(--s-4);
  margin: var(--s-3) 0;
  font-size: 14.5px;
  color: var(--on-surface);
  line-height: 1.7;
}
.help-callout b { color: var(--cyan-accent); }

/* Definition list — manual-style key/value pairs */
.help-dl,
.help-body dl {
  display: grid;
  grid-template-columns: minmax(140px, 240px) 1fr;
  gap: var(--s-2) var(--s-5);
  margin-bottom: var(--s-3);
  padding: var(--s-2) 0;
  border-top: 1px solid var(--outline-variant);
}
.help-dl dt,
.help-body dt {
  font-weight: 700;
  color: var(--cyan-accent);
  font-size: 14px;
  letter-spacing: 0;
  text-transform: none;
  border-right: 1px solid var(--outline-variant);
  padding-right: var(--s-3);
}
.help-dl dd,
.help-body dd {
  margin: 0;
  color: var(--on-surface);
  font-size: 14.5px;
  padding-bottom: var(--s-2);
  border-bottom: 1px dashed var(--outline-variant);
}
.help-dl dd:last-of-type,
.help-body dd:last-of-type { border-bottom: 0; }

/* Inline accents */
.help-body code {
  font-size: 0.92em;
  background: var(--surface-container-lowest);
  border: 1px solid var(--outline-variant);
  padding: 2px 7px;
  border-radius: var(--r-default);
  color: var(--cyan-accent);
  font-weight: 600;
}
.help-body kbd {
  font-size: 12px;
  padding: 2px 7px;
  background: var(--surface-container-highest);
  border: 1px solid var(--outline);
  border-bottom-width: 2px;
  border-radius: var(--r-default);
  color: var(--on-surface);
  font-weight: 600;
  display: inline-block;
  line-height: 1.4;
}
.help-body kbd.cyan {
  background: var(--cyan-accent);
  color: var(--slate-900);
  border-color: var(--cyan-accent);
  box-shadow: 0 0 0 1px rgba(45,212,191,0.40), 0 0 10px rgba(45,212,191,0.30);
}
.help-body b { color: var(--cyan-accent); font-weight: 700; }
.help-body em {
  font-style: italic;
  color: var(--primary);
  font-weight: 500;
}

/* Hero workflow line — kept compact for header use */
.help-hero {
  background: linear-gradient(135deg,
    rgba(45,212,191,0.06) 0%,
    rgba(137,206,255,0.06) 100%);
  border: 1px solid rgba(45,212,191,0.25);
  border-radius: var(--r-xl);
  padding: var(--s-4);
  margin-bottom: var(--s-6);
}
.help-stepline {
  list-style: none !important;
  padding: 0 !important;
  margin: 0 !important;
  display: flex;
  align-items: stretch;
  gap: var(--s-2);
  flex-wrap: wrap;
}
.help-stepline > li {
  display: flex;
  align-items: center;
  gap: var(--s-2);
  flex: 1 1 140px;
  min-width: 140px;
  padding: var(--s-2) var(--s-3);
  background: var(--surface-container-low);
  border: 1px solid var(--outline-variant);
  border-radius: var(--r-lg);
}
.help-stepline > li.help-arrow {
  flex: 0 0 auto;
  min-width: 0;
  padding: 0;
  background: transparent;
  border: 0;
  color: var(--cyan-accent);
  font-size: 18px;
  font-weight: 800;
  opacity: 0.7;
  align-self: center;
}
.help-num {
  flex-shrink: 0;
  width: 26px; height: 26px;
  border-radius: 999px;
  background: var(--cyan-accent);
  color: var(--slate-900);
  display: grid; place-items: center;
  font-weight: 800;
  font-size: 13px;
  box-shadow: 0 0 0 1px rgba(45,212,191,0.40), 0 0 10px rgba(45,212,191,0.25);
}
.help-num-2 { background: var(--primary); color: var(--on-primary); }
.help-num-3 { background: var(--secondary); color: var(--on-secondary); }
.help-num-4 { background: var(--tertiary); color: var(--on-tertiary); }
.help-stepline b { color: var(--on-surface); font-weight: 700; }
.help-desc {
  font-size: 11px;
  color: var(--on-surface-variant);
}

.help-numbered { padding-left: 1.6rem; }
.help-note {
  display: inline-block;
  font-size: 12.5px;
  color: var(--on-surface-variant);
  font-style: italic;
}

/* Chip preview pill used in the guide */
.help-chip-demo {
  display: inline-block;
  padding: 2px 9px;
  border-radius: 999px;
  font-size: 11.5px;
  font-weight: 600;
  border: 1px solid currentColor;
  margin: 2px 4px 2px 0;
  letter-spacing: 0.01em;
}

/* Version history timeline */
.brand-version-inline {
  display: inline-block;
  padding: 1px 8px;
  font-family: var(--f-mono);
  font-size: 11px;
  font-weight: 700;
  color: var(--cyan-accent);
  border: 1px solid color-mix(in srgb, var(--cyan-accent) 40%, transparent);
  background: color-mix(in srgb, var(--cyan-accent) 12%, transparent);
  border-radius: var(--r-full);
  letter-spacing: 0.04em;
}
.version-timeline {
  list-style: none;
  padding: 0;
  margin: var(--s-4) 0;
  display: flex;
  flex-direction: column;
  gap: var(--s-3);
}
.version-entry {
  display: flex;
  gap: var(--s-4);
  padding: var(--s-3) var(--s-4);
  background: var(--surface-container-low);
  border: 1px solid var(--outline-variant);
  border-radius: var(--r-lg);
  transition: border-color 160ms ease;
}
.version-entry:hover {
  border-color: color-mix(in srgb, var(--cyan-accent) 35%, var(--outline-variant));
}
.version-entry.current {
  background: color-mix(in srgb, var(--cyan-accent) 8%, var(--surface-container-low));
  border-color: color-mix(in srgb, var(--cyan-accent) 45%, var(--outline-variant));
}
.version-tag {
  flex-shrink: 0;
  width: 56px;
  font-family: var(--f-mono);
  font-size: 18px;
  font-weight: 800;
  color: var(--cyan-accent);
  letter-spacing: -0.01em;
  padding-top: 2px;
}
.version-entry.current .version-tag {
  color: var(--cyan-accent);
  text-shadow: 0 0 12px rgba(45,212,191,0.45);
}
.version-body { flex: 1; min-width: 0; }
.version-title {
  font-family: var(--f-display);
  font-size: 15px;
  font-weight: 700;
  color: var(--on-surface);
  margin-bottom: var(--s-2);
  display: flex; align-items: baseline; gap: var(--s-2); flex-wrap: wrap;
}
.version-pill {
  font-family: var(--f-caps);
  font-size: 9.5px;
  font-weight: 800;
  letter-spacing: 0.10em;
  text-transform: uppercase;
  padding: 1px 8px;
  background: var(--cyan-accent);
  color: var(--slate-900);
  border-radius: var(--r-full);
}
.version-body ul {
  margin: 0;
  padding-left: 1.1rem;
  list-style: '— ';
  font-size: 12.5px;
  line-height: 1.55;
  color: var(--on-surface-variant);
}
.version-body ul li { margin-bottom: 2px; }

.help-footer-note {
  margin-top: var(--s-6);
  padding: var(--s-3) var(--s-4);
  border: 1px solid var(--outline-variant);
  background: var(--surface-container-lowest);
  border-radius: var(--r-lg);
  font-size: 12px;
  color: var(--on-surface-variant);
  line-height: 1.7;
  text-align: center;
}
.help-footer-note a { color: var(--cyan-accent); text-decoration: underline; }
.help-brand { color: var(--cyan-accent); }

/* Light theme adjustments */
html[data-theme="light"] .help-modal-content {
  box-shadow: 0 0 0 1px rgba(15,118,110,0.20), 0 24px 60px rgba(15,23,42,0.18);
}
html[data-theme="light"] .help-body { color: var(--on-surface); }
html[data-theme="light"] .help-body b { color: var(--accent-hi); }

/* Responsive layout — narrower screens stack the dl */
@media (max-width: 760px) {
  .help-modal-content { max-width: 100%; max-height: 96vh; width: 100%; }
  .help-header { padding: var(--s-3) var(--s-4); }
  .help-header h2 { font-size: 18px; }
  .help-body { padding: var(--s-4) var(--s-4); font-size: 14.5px; }
  .help-body h3 { font-size: 17px; }
  .help-toc { padding: var(--s-1) var(--s-3); }
  .help-dl, .help-body dl { grid-template-columns: 1fr; gap: 4px 0; }
  .help-dl dt, .help-body dt { border-right: 0; border-bottom: 1px dotted var(--outline-variant); padding-right: 0; padding-bottom: 4px; }
  .help-dl dd, .help-body dd { padding-left: var(--s-3); }
  .help-stepline { flex-direction: column; }
  .help-stepline > li.help-arrow { transform: rotate(90deg); margin: 0 auto; }
}

/* ----------------------------------------------------------------
   FOOTER
---------------------------------------------------------------- */
.app-footer {
  border-top: 1px solid var(--outline-variant);
  background: var(--surface-container-lowest);
  color: var(--text-secondary);
  margin-top: var(--s-10);
  padding: var(--s-4) var(--s-7);
  font-family: var(--f-caps);
  font-size: 10px;
  letter-spacing: var(--tracking-label);
  text-transform: uppercase;
}
.footer-name { color: var(--primary); font-weight: 700; margin-left: 4px; }
.footer-name:hover { color: var(--primary-fixed); }
.footer-link { color: var(--on-surface-variant); }
.footer-link:hover { color: var(--primary); }
.footer-sep { color: var(--text-secondary); opacity: 0.5; }
.footer-disclaimer {
  border-top: 1px solid var(--outline-variant);
  margin-top: var(--s-2);
  padding-top: var(--s-2);
  width: 100%;
  font-family: var(--f-body);
  font-size: 10.5px;
  color: var(--text-secondary);
  line-height: 1.65;
  letter-spacing: 0;
  text-transform: none;
}

/* ----------------------------------------------------------------
   DISCLAIMER
---------------------------------------------------------------- */
/* ────────────────────────────────────────────────────────────
   BACKUP WARNING — localStorage volatility notice
──────────────────────────────────────────────────────────── */
.backup-warning {
  display: flex; align-items: flex-start; gap: var(--s-3);
  padding: var(--s-3) var(--s-4);
  background: linear-gradient(135deg,
    rgba(255,185,95,0.10) 0%,
    rgba(255,185,95,0.05) 100%);
  border: 1px solid rgba(255,185,95,0.40);
  border-left: 3px solid var(--tertiary);
  border-radius: var(--r-lg);
  color: var(--on-surface);
  font-size: 13px;
  line-height: 1.6;
}
.backup-warning-icon {
  font-size: 20px;
  line-height: 1;
  flex-shrink: 0;
  filter: drop-shadow(0 0 6px rgba(255,185,95,0.4));
}
.backup-warning b { color: var(--tertiary); font-weight: 700; }
.backup-warning code {
  font-family: var(--f-mono);
  background: var(--surface-container-lowest);
  border: 1px solid var(--outline-variant);
  padding: 1px 6px;
  border-radius: var(--r-default);
  color: var(--cyan-accent);
  font-size: 0.92em;
}

.backup-warning-inline {
  padding: 6px var(--s-3);
  background: rgba(255,185,95,0.08);
  border: 1px solid rgba(255,185,95,0.30);
  border-left: 3px solid var(--tertiary);
  border-radius: var(--r-default);
  font-size: 11.5px;
  line-height: 1.55;
  color: var(--on-surface-variant);
}
.backup-warning-inline b { color: var(--tertiary); font-weight: 600; }
.backup-warning-inline code {
  font-family: var(--f-mono);
  background: var(--surface-container-lowest);
  border: 1px solid var(--outline-variant);
  padding: 0 5px;
  border-radius: var(--r-default);
  color: var(--cyan-accent);
  font-size: 0.92em;
}

.disclaimer {
  background: var(--surface-container-low);
  border: 1px solid rgba(255,185,95,0.25);
  border-left: 3px solid var(--tertiary);
  border-radius: var(--r-lg);
  padding: var(--s-3) var(--s-4);
  margin-bottom: var(--s-3);
}
/* Persistent top-of-page copyright notice — sits above every tab and
   should stay visually subdued. Smaller text + tighter padding so it
   doesn't dominate the builder's hero title or any panel header. */
.disclaimer-small {
  padding: var(--s-2) var(--s-3);
}
.disclaimer-small p {
  font-size: 11px;
  line-height: 1.55;
}
.disclaimer-inline {
  background: var(--surface-container-low);
  border-left: 3px solid var(--cyan-accent);
  padding: var(--s-1) var(--s-3);
  margin-top: var(--s-2);
  font-size: 11.5px;
  color: var(--on-surface-variant);
  border-radius: 0 var(--r-lg) var(--r-lg) 0;
}

/* ----------------------------------------------------------------
   VIEWS / TOAST
---------------------------------------------------------------- */
.view { animation: fade 200ms ease-out; }
@keyframes fade {
  from { opacity: 0; transform: translateY(4px); }
  to   { opacity: 1; transform: none; }
}

#toast {
  background: var(--primary);
  color: var(--on-primary);
  border: 0;
  border-radius: var(--r-lg);
  padding: var(--s-3) var(--s-5);
  font-family: var(--f-caps);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: var(--tracking-label);
  text-transform: uppercase;
  box-shadow: 0 12px 28px rgba(14,165,233,0.30);
  max-width: min(90vw, 560px);
  text-align: center;
  line-height: 1.4;
  transition: opacity 200ms ease, background 200ms ease, box-shadow 200ms ease, transform 200ms ease;
  transform: translate(-50%, 0);
}
#toast.show { opacity: 1; transform: translate(-50%, -4px); }
#toast.error {
  background: #dc2626;                                  /* red-600 */
  color: #ffffff;
  text-transform: none;                                 /* normal-case Korean error msgs */
  letter-spacing: 0.01em;
  font-size: 12.5px;
  box-shadow:
    0 0 0 1px rgba(220,38,38,0.55),
    0 0 22px rgba(220,38,38,0.40),
    0 18px 36px rgba(0,0,0,0.45);
  animation: toastShake 220ms ease-out;
}
@keyframes toastShake {
  0%   { transform: translate(-50%, -4px) translateX(0); }
  25%  { transform: translate(-50%, -4px) translateX(-6px); }
  50%  { transform: translate(-50%, -4px) translateX(6px); }
  75%  { transform: translate(-50%, -4px) translateX(-3px); }
  100% { transform: translate(-50%, -4px) translateX(0); }
}

/* ----------------------------------------------------------------
   SCROLLBARS — thin, recessed
---------------------------------------------------------------- */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--surface-container-highest); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--outline); }

* { scrollbar-width: thin; scrollbar-color: var(--surface-container-highest) transparent; }

/* ----------------------------------------------------------------
   VARIANT BLOCKS — inside preset/artist card (3 expanded prompts)
---------------------------------------------------------------- */
.art-card.has-variants { padding-bottom: var(--s-3); }
.art-card.has-variants .style,
.art-card.has-variants .struct { max-height: none; }
.variant-block {
  border-top: 1px solid var(--outline-variant);
  padding-top: var(--s-3);
  margin-top: var(--s-3);
}
.variant-block:first-of-type {
  border-top: 1px solid var(--outline-variant);
}
.variant-head {
  display: flex; align-items: baseline; gap: var(--s-2);
  margin-bottom: var(--s-2);
}
.variant-label {
  display: inline-block;
  padding: 2px var(--s-2);
  border-radius: var(--r-default);
  font-family: var(--f-caps);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: var(--tracking-label);
  text-transform: uppercase;
  background: var(--surface-container-highest);
  color: var(--on-surface-variant);
}
.variant-label-0 { background: var(--primary-container); color: var(--on-primary-container); }
.variant-label-1 { background: rgba(221,183,255,0.18); color: var(--secondary); border: 1px solid rgba(221,183,255,0.30); }
.variant-label-2 { background: rgba(255,185,95,0.18); color: var(--tertiary); border: 1px solid rgba(255,185,95,0.30); }
.variant-song {
  font-family: var(--f-display);
  font-size: 13px;
  font-weight: 600;
  color: var(--on-surface);
  letter-spacing: var(--tracking-tight);
}
.variant-block .style {
  max-height: none;
  margin-top: 0;
  padding-top: 0;
  border-top: 0;
  font-size: 12px;
  line-height: 1.55;
}
.variant-block .struct {
  margin-top: var(--s-2);
}
.variant-block .actions {
  margin-top: var(--s-2);
}

/* ----------------------------------------------------------------
   VARIANT SWITCHER — artist style mode (signature / ballad / anthem)
---------------------------------------------------------------- */
.variant-switcher {
  padding-top: var(--s-2);
  border-top: 1px solid var(--outline-variant);
}
.variant-tabs {
  display: inline-flex;
  background: var(--surface-container-lowest);
  border: 1px solid var(--outline-variant);
  border-radius: var(--r-lg);
  padding: 2px;
  margin-top: var(--s-1);
}
.variant-tab {
  padding: 4px var(--s-3);
  border-radius: var(--r-default);
  background: transparent;
  border: 0;
  color: var(--on-surface-variant);
  font-family: var(--f-caps);
  font-weight: 700;
  font-size: 10.5px;
  letter-spacing: var(--tracking-label);
  text-transform: uppercase;
  cursor: pointer;
  transition: all 120ms ease;
}
.variant-tab:hover { color: var(--on-surface); }
.variant-tab.active {
  background: var(--cyan-accent);
  color: var(--slate-900);
  box-shadow: 0 0 0 1px var(--cyan-accent), 0 0 8px rgba(45,212,191,0.30);
}

/* ----------------------------------------------------------------
   WORKFLOW CHART — onboarding banner below the topbar
   Four-step "처음이라면" flow chart for beginners. Collapsible.
---------------------------------------------------------------- */
.workflow-chart {
  margin: 0 var(--s-7) var(--s-3);
  padding: var(--s-3) var(--s-5);
  background: linear-gradient(
    135deg,
    rgba(45, 212, 191, 0.06) 0%,
    rgba(137, 206, 255, 0.05) 50%,
    rgba(221, 183, 255, 0.05) 100%);
  border: 1px solid rgba(45, 212, 191, 0.22);
  border-radius: var(--r-xl);
  box-shadow: 0 4px 22px rgba(45, 212, 191, 0.08);
  position: relative;
  overflow: hidden;
}
.workflow-chart::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(600px 200px at -10% 0%, rgba(45,212,191,0.10), transparent 60%),
    radial-gradient(600px 200px at 110% 100%, rgba(137,206,255,0.08), transparent 60%);
  pointer-events: none;
}
.workflow-chart.collapsed .workflow-steps,
.workflow-chart.collapsed .workflow-tip { display: none; }
.workflow-chart.collapsed { padding: var(--s-2) var(--s-5); }

.workflow-head {
  display: flex; align-items: center; gap: var(--s-2);
  margin-bottom: var(--s-3);
  position: relative; z-index: 1;
}
.workflow-chart.collapsed .workflow-head { margin-bottom: 0; }
.workflow-eyebrow {
  font-family: var(--f-caps);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: var(--tracking-label);
  text-transform: uppercase;
  color: var(--cyan-accent);
}
.workflow-toggle {
  margin-left: auto;
  background: transparent;
  border: 1px solid var(--outline-variant);
  color: var(--on-surface-variant);
  border-radius: var(--r-default);
  padding: 3px var(--s-2);
  font-family: var(--f-caps);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  cursor: pointer;
  transition: all 120ms ease;
}
.workflow-toggle:hover { color: var(--on-surface); border-color: var(--cyan-accent); }

.workflow-steps {
  display: flex;
  align-items: stretch;
  gap: var(--s-2);
  list-style: none;
  margin: 0; padding: 0;
  position: relative; z-index: 1;
  flex-wrap: wrap;
}
.workflow-step {
  flex: 1 1 200px;
  display: flex;
  align-items: flex-start;
  gap: var(--s-3);
  padding: var(--s-3);
  background: var(--surface-container-low);
  border: 1px solid var(--outline-variant);
  border-radius: var(--r-lg);
  min-width: 200px;
  transition: border-color 150ms ease, transform 120ms ease;
}
.workflow-step:hover {
  border-color: var(--cyan-accent);
  transform: translateY(-1px);
}
.workflow-num {
  flex-shrink: 0;
  width: 28px; height: 28px;
  border-radius: 999px;
  background: var(--cyan-accent);
  color: var(--slate-900);
  display: grid; place-items: center;
  font-family: var(--f-caps);
  font-weight: 800;
  font-size: 13px;
  box-shadow:
    0 0 0 1px rgba(45,212,191,0.40),
    0 0 14px rgba(45,212,191,0.28);
}
.workflow-step[data-step="2"] .workflow-num { background: var(--primary); color: var(--on-primary); box-shadow: 0 0 0 1px rgba(137,206,255,0.40), 0 0 14px rgba(137,206,255,0.28); }
.workflow-step[data-step="3"] .workflow-num { background: var(--secondary); color: var(--on-secondary); box-shadow: 0 0 0 1px rgba(221,183,255,0.40), 0 0 14px rgba(221,183,255,0.28); }
.workflow-step[data-step="4"] .workflow-num { background: var(--tertiary); color: var(--on-tertiary); box-shadow: 0 0 0 1px rgba(255,185,95,0.40), 0 0 14px rgba(255,185,95,0.28); }

.workflow-body { min-width: 0; flex: 1; }
.workflow-title {
  font-family: var(--f-display);
  font-weight: 700;
  font-size: 14px;
  color: var(--on-surface);
  margin-bottom: 3px;
  letter-spacing: var(--tracking-tight);
  display: flex; align-items: baseline; gap: 6px;
}
.workflow-pill {
  font-family: var(--f-caps);
  font-size: 9px;
  font-weight: 700;
  letter-spacing: var(--tracking-label);
  text-transform: uppercase;
  padding: 1px 6px;
  background: rgba(221,183,255,0.18);
  color: var(--secondary);
  border: 1px solid rgba(221,183,255,0.40);
  border-radius: var(--r-default);
}
.workflow-desc {
  font-size: 11.5px;
  color: var(--on-surface-variant);
  line-height: 1.55;
}
.workflow-arrow {
  align-self: center;
  font-family: var(--f-mono);
  font-size: 20px;
  font-weight: 700;
  color: var(--cyan-accent);
  opacity: 0.55;
  padding: 0 2px;
}

.workflow-tip {
  margin-top: var(--s-3);
  padding: var(--s-2) var(--s-3);
  border-top: 1px dashed var(--outline-variant);
  font-size: 11.5px;
  color: var(--on-surface-variant);
  line-height: 1.6;
  position: relative; z-index: 1;
}
.workflow-tip kbd {
  font-family: var(--f-mono);
  font-size: 10px;
  padding: 1px 5px;
  background: var(--surface-container-high);
  border: 1px solid var(--outline-variant);
  border-radius: var(--r-default);
  color: var(--cyan-accent);
}

@media (max-width: 1100px) {
  .workflow-steps { flex-direction: column; align-items: stretch; }
  /* In column mode flex-basis becomes vertical; the original 200px
     basis made every card grow to ≥200px tall regardless of content.
     Pin to natural content height instead. */
  .workflow-step { flex: 0 0 auto; min-width: 0; }
  .workflow-arrow { transform: rotate(90deg); padding: 2px 0; }
}
@media (max-width: 700px) {
  .workflow-chart { margin: 0 var(--s-3) var(--s-3); padding: var(--s-3); }
}

/* Load handoff — visual separator above the unified
   "시작점 · 제어 → 빌더에 로드" button at the bottom of the 제어 panel */
.load-handoff {
  padding-top: var(--s-3);
  margin-top: var(--s-3);
  border-top: 1px dashed var(--cyan-accent);
}
.load-handoff p { margin: 0 0 6px; }

/* ----------------------------------------------------------------
   LOAD-TO-BUILDER ACTION BUTTON — emphasised
   "빌더에 로드" / "빌더로 보내기" — key handoff into the Builder.
---------------------------------------------------------------- */
.btn-load-builder {
  position: relative;
  background: var(--cyan-accent);
  color: var(--slate-900);
  font-family: var(--f-caps);
  font-weight: 700;
  letter-spacing: var(--tracking-label);
  text-transform: uppercase;
  padding: 9px 16px 9px 32px;
  border-radius: var(--r-lg);
  font-size: 12px;
  border: 0;
  cursor: pointer;
  box-shadow:
    0 0 0 1px rgba(45, 212, 191, 0.55),
    0 0 16px rgba(45, 212, 191, 0.35),
    0 4px 14px rgba(45, 212, 191, 0.25),
    inset 0 1px 0 rgba(255, 255, 255, 0.25);
  transition: transform 100ms ease, box-shadow 160ms ease, background 120ms ease;
}
.btn-load-builder::before {
  content: '';
  position: absolute;
  left: 12px; top: 50%;
  width: 12px; height: 12px;
  transform: translateY(-50%);
  background: currentColor;
  -webkit-mask: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'><polyline points='9 18 15 12 9 6'/></svg>") center/contain no-repeat;
          mask: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'><polyline points='9 18 15 12 9 6'/></svg>") center/contain no-repeat;
}
.btn-load-builder:hover {
  background: #4be8d4;
  transform: translateY(-1px);
  box-shadow:
    0 0 0 1px rgba(45, 212, 191, 0.85),
    0 0 22px rgba(45, 212, 191, 0.55),
    0 6px 22px rgba(45, 212, 191, 0.38),
    inset 0 1px 0 rgba(255, 255, 255, 0.35);
}
.btn-load-builder:active { transform: translateY(0); }
.btn-load-builder:disabled {
  opacity: 0.45; cursor: not-allowed; transform: none;
  box-shadow: 0 0 0 1px rgba(45,212,191,0.30);
}
/* Full-width variant (used in 시작점 panel) */
.btn-load-builder.w-full,
.btn-load-builder[data-block="1"] {
  width: 100%;
  text-align: center;
  padding-left: 36px;
  padding-right: 16px;
}
.btn-load-builder.w-full::before { left: 14px; }

/* In light mode, the slate-900 ink works against cyan still */
html[data-theme="light"] .btn-load-builder {
  color: #ffffff;
  box-shadow:
    0 0 0 1px rgba(15, 118, 110, 0.55),
    0 0 14px rgba(15, 118, 110, 0.28),
    0 4px 14px rgba(15, 118, 110, 0.22),
    inset 0 1px 0 rgba(255, 255, 255, 0.20);
}

/* ----------------------------------------------------------------
   DANCING MACHINE — 200 dance-style cards + tag combiner
---------------------------------------------------------------- */
.dance-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--s-2);
  max-height: 72vh;
  overflow: auto;
  padding-right: var(--s-2);
}
.dance-card {
  background: var(--surface-container-low);
  border: 1px solid var(--outline-variant);
  border-radius: var(--r-lg);
  padding: var(--s-3) var(--s-4);
  text-align: left;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  gap: var(--s-2);
  transition: all 120ms ease;
  color: var(--on-surface);
}
.dance-card:hover {
  border-color: var(--cyan-accent);
  background: var(--surface-container);
  transform: translateY(-1px);
  box-shadow: 0 4px 14px rgba(45,212,191,0.15);
}
.dance-card-head {
  display: flex; align-items: center; gap: var(--s-2);
  font-family: var(--f-caps);
  font-size: 9.5px;
  font-weight: 700;
  letter-spacing: var(--tracking-label);
  text-transform: uppercase;
  color: var(--text-secondary);
}
.dance-card-no {
  background: var(--cyan-accent);
  color: var(--slate-900);
  padding: 1px 6px;
  border-radius: var(--r-default);
}
.dance-card-fam {
  background: var(--surface-container-high);
  padding: 1px 6px;
  border-radius: var(--r-default);
  color: var(--primary);
}
.dance-card-bpm {
  margin-left: auto;
  font-family: var(--f-mono);
  color: var(--tertiary);
  letter-spacing: 0.02em;
}
.dance-card-name {
  display: flex; align-items: baseline; gap: var(--s-2);
  flex-wrap: wrap;
}
.dance-card-ko {
  font-family: var(--f-display);
  font-weight: 700;
  font-size: 16px;
  color: var(--on-surface);
  letter-spacing: var(--tracking-tight);
}
.dance-card-en {
  font-family: var(--f-display);
  font-weight: 500;
  font-size: 12px;
  color: var(--cyan-accent);
}
.dance-card-desc {
  font-size: 12px;
  color: var(--on-surface-variant);
  line-height: 1.55;
}
.dance-card-style {
  font-family: var(--f-mono);
  font-size: 10.5px;
  color: var(--text-secondary);
  background: var(--surface-container-lowest);
  border: 1px solid var(--outline-variant);
  border-radius: var(--r-default);
  padding: 8px 10px;
  line-height: 1.55;
  word-break: break-word;
  white-space: pre-wrap;
}

/* Tag combiner — category tabs */
.dance-tag-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 3px;
  margin-bottom: var(--s-2);
  padding: 3px;
  background: var(--surface-container-lowest);
  border: 1px solid var(--outline-variant);
  border-radius: var(--r-lg);
}
.dance-tag-tab {
  flex: 1 0 auto;
  padding: 5px 10px;
  border: 0;
  border-radius: var(--r-default);
  background: transparent;
  color: var(--on-surface-variant);
  font-family: var(--f-caps);
  font-weight: 700;
  font-size: 10px;
  letter-spacing: var(--tracking-label);
  text-transform: uppercase;
  cursor: pointer;
  transition: all 120ms ease;
}
.dance-tag-tab:hover { color: var(--on-surface); }
.dance-tag-tab.active {
  background: var(--primary);
  color: var(--on-primary);
}

/* Tag combiner — pill grid */
.dance-tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  max-height: 24vh;
  overflow: auto;
  padding: 4px;
  background: var(--surface-container-lowest);
  border: 1px solid var(--outline-variant);
  border-radius: var(--r-lg);
}
.dance-tag-pill {
  display: inline-flex;
  flex-direction: column;
  gap: 1px;
  padding: 4px 9px;
  border: 1px solid var(--outline-variant);
  border-radius: var(--r-lg);
  background: var(--surface-container);
  color: var(--on-surface);
  cursor: pointer;
  text-align: left;
  transition: all 120ms ease;
  max-width: 100%;
}
.dance-tag-pill:hover {
  border-color: var(--cyan-accent);
  background: var(--surface-container-high);
}
.dance-tag-pill.active {
  background: rgba(45,212,191,0.15);
  border-color: var(--cyan-accent);
  box-shadow: 0 0 0 1px rgba(45,212,191,0.40);
}
.dance-tag-pill .dance-tag-en {
  font-family: var(--f-mono);
  font-size: 11px;
  font-weight: 500;
  color: var(--cyan-accent);
}
.dance-tag-pill .dance-tag-ko {
  font-size: 10px;
  color: var(--text-secondary);
}

@media (max-width: 1100px) {
  .dance-grid { grid-template-columns: 1fr 1fr; max-height: none; }
}
@media (max-width: 700px) {
  .dance-grid { grid-template-columns: 1fr; }
}

/* ----------------------------------------------------------------
   LEGACY HOLDOVER — utility class re-mapping
---------------------------------------------------------------- */
.text-slate-100, .text-slate-200 { color: var(--text-primary) !important; }
.text-slate-300 { color: var(--on-surface) !important; }
.text-slate-400 { color: var(--on-surface-variant) !important; }
.text-slate-500 { color: var(--text-secondary) !important; }
.text-slate-600 { color: var(--text-secondary) !important; opacity: 0.7; }

.text-accent-400, .text-accent-500 { color: var(--primary) !important; }
.text-mint-400, .text-mint-500 { color: var(--cyan-accent) !important; }
.text-amber-300, .text-amber-400 { color: var(--tertiary) !important; }
.text-red-300 { color: var(--error) !important; }

.bg-ink-900, .bg-ink-800 { background: var(--surface) !important; }
.bg-ink-700 { background: var(--surface-container-high) !important; }
.bg-ink-600 { background: var(--surface-container-highest) !important; }
.bg-mint-500 { background: var(--cyan-accent) !important; color: var(--slate-900) !important; }

.border-ink-600, .border-ink-700, .border-ink-800 { border-color: var(--outline-variant) !important; }