/* MusicLab — Modern Minimal: white canvas, #333 text, one blue accent, gray everything else.
   Flat: 1px #E5E7EB borders, cards without shadows, radius 6/8, no gradients or glass.
   Colour carries meaning only: blue = action, green = success, amber = warning, red = error. */

@font-face {
  font-family: 'Inter';
  src: url('/fonts/inter-cyrillic-wght-normal.woff2') format('woff2-variations');
  font-weight: 100 900;
  font-display: swap;
  unicode-range: U+0301, U+0400-045F, U+0490-0491, U+04B0-04B1, U+2116;
}
@font-face {
  font-family: 'Inter';
  src: url('/fonts/inter-latin-wght-normal.woff2') format('woff2-variations');
  font-weight: 100 900;
  font-display: swap;
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: 'JetBrains Mono';
  src: url('/fonts/jetbrains-mono-cyrillic-wght-normal.woff2') format('woff2-variations');
  font-weight: 100 800;
  font-display: swap;
  unicode-range: U+0400-045F;
}
@font-face {
  font-family: 'JetBrains Mono';
  src: url('/fonts/jetbrains-mono-latin-wght-normal.woff2') format('woff2-variations');
  font-weight: 100 800;
  font-display: swap;
}

:root {
  --background: #ffffff;
  --foreground: #333333;
  --primary: #3b82f6;
  --primary-hover: #2563eb;
  --primary-foreground: #ffffff;
  --secondary: #f3f4f6;
  --secondary-hover: #e5e7eb;
  --secondary-foreground: #4b5563;
  --muted: #f9fafb;
  --muted-foreground: #6b7280;
  --accent: #e0f2fe;
  --accent-foreground: #1e3a8a;
  --destructive: #ef4444;
  --destructive-soft: #fee2e2;
  --destructive-strong: #b91c1c;
  --success: #16a34a;
  --success-soft: #dcfce7;
  --success-strong: #15803d;
  --warning: #d97706;
  --warning-soft: #fef3c7;
  --warning-strong: #b45309;
  --chart-muted: #d1d5db;
  --border: #e5e7eb;
  --ring-soft: rgba(59, 130, 246, 0.35);

  --wave-played: #3b82f6;
  --wave-rest: #d1d5db;
  --wave-hover: #9ca3af;

  --radius: 6px;
  --radius-lg: 8px;

  --shadow-sm: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1);
  --shadow-md: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 2px 4px -1px rgb(0 0 0 / 0.1);
  --shadow-xl: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 8px 10px -1px rgb(0 0 0 / 0.1);

  --t: 0.15s;
  --topbar-h: 60px;
  --player-h: 76px;
  --font: 'Inter', ui-sans-serif, system-ui, sans-serif;
  --mono: 'JetBrains Mono', ui-monospace, 'SFMono-Regular', Menlo, monospace;

  color-scheme: light;
}

*, *::before, *::after { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  background: var(--background);
  color: var(--foreground);
  font: 400 14px/20px var(--font);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow: hidden;
}
::selection { background: var(--accent); color: var(--accent-foreground); }
button, input, select, textarea { font: inherit; color: inherit; }
button { cursor: pointer; -webkit-tap-highlight-color: transparent; }
button:disabled { cursor: not-allowed; }
[hidden] { display: none !important; }
a { color: var(--primary); text-underline-offset: 3px; }
:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; }
.mono { font-family: var(--mono); font-variant-numeric: tabular-nums; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
kbd {
  font: 400 11px/1 var(--mono);
  padding: 3px 5px;
  border-radius: 4px;
  border: 1px solid var(--border);
  background: var(--muted);
  color: var(--muted-foreground);
}

.icon { width: 16px; height: 16px; flex: none; fill: none; stroke-width: 1.75; }
.icon-sm { width: 14px; height: 14px; }

* { scrollbar-width: thin; scrollbar-color: var(--chart-muted) transparent; }
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-thumb { background: var(--chart-muted); border-radius: 10px; border: 3px solid transparent; background-clip: content-box; }
::-webkit-scrollbar-thumb:hover { background-color: #9ca3af; }
::-webkit-scrollbar-track { background: transparent; }

/* ---------------- brand ---------------- */
.brand { display: flex; align-items: center; gap: 10px; font-weight: 600; font-size: 16px; color: var(--foreground); }
.brand-mark { width: 20px; height: 20px; fill: var(--primary); }
.brand-lg { font-size: 18px; }
.brand-lg .brand-mark { width: 24px; height: 24px; }

.boot { position: fixed; inset: 0; background: var(--background); }

/* ---------------- buttons ---------------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  height: 36px; padding: 0 16px;
  border-radius: var(--radius);
  border: 1px solid transparent;
  background: var(--secondary);
  color: var(--secondary-foreground);
  font-weight: 500; font-size: 14px;
  white-space: nowrap;
  transition-property: background-color, color, border-color, opacity;
  transition-duration: var(--t);
  transition-timing-function: ease-out;
}
.btn:disabled { opacity: 0.5; }
.btn-primary { background: var(--primary); color: var(--primary-foreground); }
.btn-secondary { background: var(--background); border-color: var(--border); color: var(--foreground); }
.btn-ghost { background: transparent; color: var(--secondary-foreground); }
.btn-danger { background: var(--destructive); color: #fff; }
.btn-sm { height: 32px; padding: 0 12px; font-size: 13px; gap: 6px; }
.btn-block { width: 100%; }
@media (hover: hover) {
  .btn:not(:disabled):hover { background: var(--secondary-hover); }
  .btn-primary:not(:disabled):hover { background: var(--primary-hover); }
  .btn-secondary:not(:disabled):hover { background: var(--muted); }
  .btn-ghost:not(:disabled):hover { background: var(--secondary); color: var(--foreground); }
  .btn-danger:not(:disabled):hover { background: var(--destructive-strong); }
}

.icon-btn {
  display: inline-grid; place-items: center;
  width: 32px; height: 32px;
  border-radius: var(--radius);
  border: 0; background: transparent; color: var(--muted-foreground);
  transition-property: background-color, color;
  transition-duration: var(--t); transition-timing-function: ease-out;
}
.icon-btn:disabled, .icon-btn[aria-disabled="true"] { opacity: 0.5; pointer-events: none; }
@media (hover: hover) { .icon-btn:not(:disabled):hover { background: var(--secondary); color: var(--foreground); } }

/* ---------------- forms ---------------- */
.field { display: grid; gap: 8px; min-width: 0; }
.field-label { font-size: 14px; font-weight: 500; color: var(--foreground); display: flex; align-items: baseline; gap: 8px; flex-wrap: wrap; }
.field-hint { font-weight: 400; color: var(--muted-foreground); font-size: 12px; }
.field-row { display: flex; align-items: center; justify-content: space-between; gap: 12px; }

.input {
  width: 100%;
  min-height: 36px;
  padding: 7px 12px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--background);
  color: var(--foreground);
  font-size: 14px;
  transition-property: border-color, box-shadow;
  transition-duration: var(--t);
}
.input::placeholder { color: var(--muted-foreground); }
.input:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px var(--ring-soft); }
.textarea { resize: vertical; line-height: 1.55; min-height: 80px; }
.textarea-lyrics { min-height: 220px; border-top-left-radius: 0; border-top-right-radius: 0; }
.select {
  appearance: none;
  padding-right: 32px;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%236b7280' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 10px center;
  background-size: 14px;
}
input[type="number"]::-webkit-inner-spin-button { opacity: 0.4; }

.form-error {
  display: flex; gap: 8px; align-items: flex-start;
  margin: 0; padding: 10px 12px;
  border-radius: var(--radius);
  background: var(--destructive-soft);
  border: 1px solid rgba(239, 68, 68, 0.3);
  color: var(--destructive-strong);
  font-size: 14px;
}

/* switch (shadcn) */
.switch { display: inline-flex; align-items: center; gap: 8px; font-size: 14px; color: var(--foreground); cursor: pointer; user-select: none; }
.switch input { position: absolute; opacity: 0; pointer-events: none; }
.switch-track {
  position: relative; flex: none;
  width: 32px; height: 18px; border-radius: 999px;
  background: var(--chart-muted);
  transition: background-color var(--t) ease-out;
}
.switch-track::after {
  content: ''; position: absolute; top: 2px; left: 2px;
  width: 14px; height: 14px; border-radius: 50%;
  background: #fff;
  box-shadow: var(--shadow-sm);
  transition: translate var(--t) ease-out;
}
.switch input:checked + .switch-track { background: var(--primary); }
.switch input:checked + .switch-track::after { translate: 14px 0; }
.switch input:focus-visible + .switch-track { box-shadow: 0 0 0 3px var(--ring-soft); }
.switch-block { display: flex; align-items: flex-start; gap: 10px; }
.switch-block .switch-track { margin-top: 1px; }
.switch-block > span:last-child { display: grid; gap: 2px; font-weight: 500; }
.switch-block small { color: var(--muted-foreground); font-size: 12px; font-weight: 400; }

/* segmented = shadcn tabs */
.segmented {
  display: flex; padding: 3px; gap: 2px;
  border-radius: var(--radius-lg);
  background: var(--secondary);
}
.seg {
  flex: 1; display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  height: 30px; padding: 0 12px;
  border: 0; border-radius: var(--radius);
  background: transparent; color: var(--muted-foreground);
  font-weight: 500; font-size: 14px;
  transition-property: background-color, color, box-shadow;
  transition-duration: var(--t);
}
.seg[aria-selected="true"], .seg[aria-checked="true"] { background: var(--background); color: var(--foreground); box-shadow: var(--shadow-sm); }
@media (hover: hover) { .seg:hover:not([aria-selected="true"]):not([aria-checked="true"]) { color: var(--foreground); } }
.segmented-compact .seg { height: 28px; font-size: 13px; padding: 0 10px; }

/* chips = pill badges */
.chips { display: flex; flex-wrap: wrap; gap: 6px; }
.chip {
  height: 28px; padding: 0 10px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--background); color: var(--secondary-foreground);
  font-size: 13px;
  transition-property: background-color, color, border-color;
  transition-duration: var(--t);
}
.chip[aria-pressed="true"] { background: var(--accent); border-color: var(--accent); color: var(--accent-foreground); }
@media (hover: hover) { .chip:hover:not([aria-pressed="true"]) { background: var(--muted); color: var(--foreground); } }

/* range */
.range-row { display: flex; align-items: center; gap: 14px; }
.range-row[data-disabled="true"] { opacity: 0.5; }
.range-out { min-width: 44px; text-align: right; color: var(--muted-foreground); font-size: 13px; }
input[type="range"] {
  -webkit-appearance: none; appearance: none;
  width: 100%; height: 18px; background: transparent; cursor: pointer;
  --fill: 50%;
}
input[type="range"]:disabled { cursor: not-allowed; }
input[type="range"]::-webkit-slider-runnable-track {
  height: 6px; border-radius: 3px;
  background: linear-gradient(to right, var(--primary) var(--fill), var(--secondary) var(--fill));
}
input[type="range"]::-moz-range-track { height: 6px; border-radius: 3px; background: var(--secondary); }
input[type="range"]::-moz-range-progress { height: 6px; border-radius: 3px; background: var(--primary); }
input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none; width: 16px; height: 16px; margin-top: -5px; border-radius: 50%;
  background: #fff; border: 1.5px solid var(--primary); box-shadow: var(--shadow-sm);
}
input[type="range"]::-moz-range-thumb { width: 14px; height: 14px; border-radius: 50%; background: #fff; border: 1.5px solid var(--primary); }

/* ---------------- login ---------------- */
.login {
  height: 100%;
  display: grid; place-items: center;
  padding: 24px 16px;
  overflow-y: auto;
  background: var(--muted);
}
.login-card {
  width: min(400px, 100%);
  display: grid; gap: 16px;
  padding: 32px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  background: var(--background);
}
.login-card .brand { margin-bottom: 8px; }
.login-title { margin: 0; font-size: 24px; line-height: 32px; font-weight: 600; letter-spacing: -0.01em; }
.login-sub { margin: -8px 0 4px; color: var(--muted-foreground); font-size: 14px; text-wrap: pretty; }
.login .btn { margin-top: 8px; height: 40px; }

/* ---------------- app shell ---------------- */
.app {
  height: 100dvh;
  display: grid;
  grid-template-rows: var(--topbar-h) minmax(0, 1fr) var(--player-h);
}

.topbar {
  display: flex; align-items: center; gap: 24px;
  padding: 0 24px;
  background: var(--background);
  border-bottom: 1px solid var(--border);
  min-width: 0;
}
.topnav { display: flex; gap: 4px; }
.topnav-item {
  display: inline-flex; align-items: center; gap: 8px;
  height: 36px; padding: 0 12px;
  border: 0; border-radius: var(--radius);
  background: transparent; color: var(--muted-foreground);
  font-weight: 500; font-size: 14px;
  transition-property: background-color, color;
  transition-duration: var(--t);
}
.topnav-item[aria-current="page"] { color: var(--accent-foreground); background: var(--accent); }
@media (hover: hover) { .topnav-item:not([aria-current="page"]):hover { color: var(--foreground); background: var(--secondary); } }

.topbar-end { margin-left: auto; display: flex; align-items: center; gap: 16px; min-width: 0; }

.engine-pill {
  display: inline-flex; align-items: center; gap: 6px;
  height: 24px; padding: 0 10px;
  border-radius: 999px;
  font-size: 12px; font-weight: 500;
  background: var(--secondary); color: var(--secondary-foreground);
}
.engine-pill .dot { width: 6px; height: 6px; border-radius: 50%; background: #9ca3af; }
.engine-pill[data-state="online"] { background: var(--success-soft); color: var(--success-strong); }
.engine-pill[data-state="online"] .dot { background: var(--success); }
.engine-pill[data-state="offline"] { background: var(--destructive-soft); color: var(--destructive-strong); }
.engine-pill[data-state="offline"] .dot { background: var(--destructive); }

.quota { display: grid; gap: 4px; min-width: 130px; }
.quota-text { font-size: 12px; color: var(--muted-foreground); white-space: nowrap; }
.quota-text b { color: var(--foreground); font-weight: 600; font-variant-numeric: tabular-nums; }
.quota-bar { height: 4px; border-radius: 2px; background: var(--secondary); overflow: hidden; }
.quota-bar span { display: block; height: 100%; background: var(--primary); width: 0; transition: width 0.2s ease-out; }
.quota[data-state="low"] .quota-bar span { background: var(--warning); }

.menu-wrap { position: relative; }
.user-btn {
  display: inline-flex; align-items: center; gap: 8px;
  height: 36px; padding: 0 8px 0 4px;
  border: 0; border-radius: var(--radius); background: transparent; color: var(--muted-foreground);
  transition: background-color var(--t);
}
@media (hover: hover) { .user-btn:hover { background: var(--secondary); } }
.user-btn[aria-expanded="true"] { background: var(--secondary); }
.avatar {
  display: grid; place-items: center;
  width: 28px; height: 28px; border-radius: 50%;
  font-size: 12px; font-weight: 600; color: var(--accent-foreground);
  background: var(--accent);
}
.user-name { font-size: 14px; font-weight: 500; color: var(--foreground); max-width: 160px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

.menu {
  position: absolute; right: 0; top: calc(100% + 6px); z-index: 40;
  min-width: 220px; padding: 4px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  background: var(--background);
  box-shadow: var(--shadow-md);
  overscroll-behavior: contain;
}
.menu-floating { position: fixed; top: 0; left: 0; right: auto; }
.menu-head { padding: 8px 10px; margin-bottom: 4px; border-bottom: 1px solid var(--border); }
.menu-head b { display: block; font-weight: 600; }
.menu-head span { color: var(--muted-foreground); font-size: 12px; }
.menu-item {
  display: flex; align-items: center; gap: 8px; width: 100%;
  height: 32px; padding: 0 10px;
  border: 0; border-radius: 4px; background: transparent; color: var(--foreground);
  font-size: 14px; text-align: left; text-decoration: none;
}
.menu-item .icon { color: var(--muted-foreground); }
.menu-item:focus-visible { outline: none; background: var(--accent); color: var(--accent-foreground); }
.menu-item.danger { color: var(--destructive-strong); }
.menu-item.danger .icon { color: var(--destructive); }
.menu-sep { height: 1px; margin: 4px 0; background: var(--border); }
@media (hover: hover) {
  .menu-item:hover { background: var(--accent); color: var(--accent-foreground); }
  .menu-item:hover .icon { color: var(--accent-foreground); }
  .menu-item.danger:hover { background: var(--destructive-soft); color: var(--destructive-strong); }
  .menu-item.danger:hover .icon { color: var(--destructive-strong); }
}
@media (prefers-reduced-motion: no-preference) {
  .menu:not([hidden]) { animation: pop-in 0.15s ease-out both; }
}
@keyframes pop-in { from { opacity: 0; translate: 0 -4px; } }

/* ---------------- studio ---------------- */
.studio {
  display: grid;
  grid-template-columns: minmax(360px, 440px) minmax(0, 1fr);
  min-height: 0;
}
.pane { min-height: 0; display: flex; flex-direction: column; min-width: 0; }
.pane-scroll { flex: 1; min-height: 0; overflow-y: auto; overscroll-behavior: contain; }
.composer { border-right: 1px solid var(--border); background: var(--muted); }

.composer-scroll { display: flex; flex-direction: column; }
.composer-body { padding: 24px; display: grid; gap: 24px; }
.group { display: grid; gap: 16px; }
.group-title { margin: 0; font-size: 16px; line-height: 24px; font-weight: 600; }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 16px 12px; }
.divider { height: 1px; background: var(--border); margin: 0 -24px; }
.note { margin: 0; font-size: 12px; line-height: 18px; color: var(--muted-foreground); text-wrap: pretty; }

.lyrics-wrap { display: grid; }
.lyrics-wrap[data-disabled="true"] { opacity: 0.5; pointer-events: none; }
.tag-bar {
  display: flex; flex-wrap: wrap; gap: 2px;
  padding: 4px;
  border: 1px solid var(--border);
  border-bottom: 0;
  border-radius: var(--radius) var(--radius) 0 0;
  background: var(--muted);
}
.tag-btn {
  height: 26px; padding: 0 8px;
  border: 0; border-radius: 4px; background: transparent;
  font: 400 12px var(--mono); color: var(--muted-foreground);
  transition-property: background-color, color; transition-duration: var(--t);
}
@media (hover: hover) { .tag-btn:hover { background: var(--accent); color: var(--accent-foreground); } }

/* cover dropzone */
.dropzone {
  position: relative;
  display: grid;
  min-height: 84px;
  padding: 16px;
  border-radius: var(--radius-lg);
  background: var(--background);
  border: 1px dashed #d1d5db;
  cursor: pointer;
  overflow: hidden;
  transition-property: background-color, border-color;
  transition-duration: var(--t);
}
.dropzone[data-filled="true"] { border-style: solid; border-color: var(--border); cursor: default; }
.dropzone[data-over="true"] { background: var(--accent); border-color: var(--primary); }
.dropzone:focus-visible { outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px var(--ring-soft); }
@media (hover: hover) { .dropzone:not([data-filled="true"]):hover { background: var(--muted); border-color: #9ca3af; } }
.dz-empty, .dz-file { display: flex; align-items: center; gap: 12px; }
.dz-empty { color: var(--muted-foreground); font-size: 14px; }
.dz-empty b { color: var(--primary); font-weight: 500; }
.dz-icon {
  display: grid; place-items: center; flex: none;
  width: 40px; height: 40px; border-radius: var(--radius-lg);
  background: var(--accent); color: var(--accent-foreground);
}
.dz-meta { display: grid; min-width: 0; flex: 1; }
.dz-name { font-weight: 500; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.dz-info { font-size: 12px; color: var(--muted-foreground); }
.dz-progress { position: absolute; left: 0; right: 0; bottom: 0; height: 3px; background: var(--secondary); }
.dz-progress span { display: block; height: 100%; width: 0; background: var(--primary); transition: width 0.2s linear; }

.advanced { border-radius: var(--radius-lg); border: 1px solid var(--border); background: var(--background); }
.advanced summary {
  list-style: none; cursor: pointer;
  display: flex; align-items: center; gap: 8px;
  height: 44px; padding: 0 16px;
  font-weight: 500;
  border-radius: var(--radius-lg);
}
.advanced summary::-webkit-details-marker { display: none; }
.advanced summary .chev { margin-left: auto; color: var(--muted-foreground); transition: rotate var(--t) ease-out; }
.advanced[open] summary .chev { rotate: 180deg; }
.advanced[open] summary { border-bottom: 1px solid var(--border); border-radius: var(--radius-lg) var(--radius-lg) 0 0; }
@media (hover: hover) { .advanced summary:hover { background: var(--muted); } }
.advanced-body { padding: 16px; }

.composer-foot {
  position: sticky; bottom: 0; margin-top: auto;
  display: flex; align-items: center; gap: 12px;
  padding: 12px 24px;
  background: var(--muted);
  border-top: 1px solid var(--border);
}
.btn-generate { flex: 1; height: 40px; }
.btn-generate[data-busy="true"] .icon { animation: spin 1s linear infinite; }
.foot-hint { margin: 0; display: flex; gap: 4px; align-items: center; color: var(--muted-foreground); font-size: 12px; }
@keyframes spin { to { rotate: 360deg; } }

/* library */
.library-head { padding: 20px 24px 0; display: grid; gap: 12px; }
.viewing-banner {
  display: flex; align-items: center; gap: 8px;
  padding: 6px 6px 6px 12px; border-radius: var(--radius-lg);
  background: var(--accent); color: var(--accent-foreground);
  border: 1px solid rgba(59, 130, 246, 0.3);
}
.viewing-banner b { font-weight: 600; }
.viewing-banner .btn { margin-left: auto; background: var(--background); color: var(--accent-foreground); border-color: rgba(59, 130, 246, 0.3); }
.library-bar { display: flex; align-items: center; gap: 16px; padding-bottom: 16px; flex-wrap: wrap; border-bottom: 1px solid var(--border); }
.library-title { margin: 0; font-size: 24px; line-height: 32px; font-weight: 600; letter-spacing: -0.01em; display: flex; align-items: baseline; gap: 8px; }
.count { font-size: 14px; color: var(--muted-foreground); font-weight: 400; letter-spacing: 0; }
.library-tools { margin-left: auto; display: flex; gap: 8px; align-items: center; }
.search {
  display: flex; align-items: center; gap: 8px;
  height: 36px; padding: 0 12px; width: 240px;
  border-radius: var(--radius); border: 1px solid var(--border);
  background: var(--background); color: var(--muted-foreground);
  transition: border-color var(--t), box-shadow var(--t);
}
.search:focus-within { border-color: var(--primary); box-shadow: 0 0 0 3px var(--ring-soft); }
.search input { border: 0; background: transparent; outline: none; width: 100%; height: 100%; font-size: 14px; caret-color: var(--primary); }
.search input::placeholder { color: var(--muted-foreground); }

.library-scroll { padding: 8px 12px 24px; }
.day-label {
  position: sticky; top: -8px; z-index: 2;
  padding: 16px 12px 6px;
  font-size: 12px; font-weight: 500; color: var(--muted-foreground);
  background: var(--background);
}

/* track row */
.row {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr) auto auto;
  align-items: center; gap: 14px;
  padding: 8px 12px;
  border-radius: var(--radius-lg);
  transition: background-color var(--t);
  position: relative;
}
.row[data-playing="true"] { background: var(--accent); }
@media (hover: hover) {
  .row:hover { background: var(--muted); }
  .row[data-playing="true"]:hover { background: var(--accent); }
}
.row-main { min-width: 0; display: grid; gap: 2px; cursor: pointer; }
.row-title {
  display: flex; align-items: center; gap: 8px;
  font-weight: 500; font-size: 14px;
  white-space: nowrap; overflow: hidden;
}
.row-title > span:first-child { overflow: hidden; text-overflow: ellipsis; }
.row[data-playing="true"] .row-title { color: var(--accent-foreground); }
.variant {
  flex: none; display: inline-grid; place-items: center;
  min-width: 20px; height: 20px; padding: 0 5px; border-radius: 999px;
  font-size: 12px; font-weight: 500; line-height: 1;
  background: var(--secondary); color: var(--secondary-foreground);
}
.row[data-playing="true"] .variant { background: var(--background); color: var(--accent-foreground); }
.row-sub { font-size: 13px; color: var(--muted-foreground); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.row-sub .sub-dur { display: none; }
.row-metas { display: flex; gap: 16px; font-size: 12px; color: var(--muted-foreground); white-space: nowrap; }
.row-metas .dur { color: var(--foreground); min-width: 38px; text-align: right; }
.row-actions { display: flex; gap: 2px; }
.fav[aria-pressed="true"] { color: var(--primary); }
.fav[aria-pressed="true"] .icon { fill: currentColor; }

/* cover tile: flat gray, tone from the track id; turns blue while playing */
.cover {
  position: relative;
  width: 44px; height: 44px; border-radius: var(--radius-lg);
  background: var(--tile, var(--secondary));
  color: var(--tile-ink, #6b7280);
  display: grid; place-items: center;
  overflow: hidden;
  flex: none;
  transition: background-color var(--t);
}
.cover-btn { border: 0; padding: 0; }
.cover-btn .tile-glyph { width: 18px; height: 18px; stroke-width: 1.75; transition: opacity var(--t); }
.cover-btn .i-play, .cover-btn .i-pause {
  position: absolute; width: 16px; height: 16px; fill: currentColor; stroke-width: 0;
  opacity: 0; transition: opacity var(--t);
}
.cover-btn .i-play { translate: 1px 0; }
.row[data-playing="true"] .cover-btn, .cover-btn:focus-visible { background: var(--primary); color: #fff; }
.row[data-playing="true"] .tile-glyph, .cover-btn:focus-visible .tile-glyph { opacity: 0; }
.row[data-playing="true"][data-paused="true"] .cover-btn .i-play,
.cover-btn:focus-visible .i-play { opacity: 1; }
@media (hover: hover) {
  .row:hover .cover-btn { background: var(--primary); color: #fff; }
  .row:hover .tile-glyph { opacity: 0; }
  .row:not([data-playing="true"]):hover .cover-btn .i-play,
  .row[data-playing="true"][data-paused="true"]:hover .cover-btn .i-play { opacity: 1; }
  .row[data-playing="true"][data-paused="false"]:hover .cover-btn .i-pause { opacity: 1; }
  .row[data-playing="true"][data-paused="false"]:hover .eq { opacity: 0; }
}
.eq { position: absolute; inset: 0; display: flex; align-items: flex-end; justify-content: center; gap: 2px; padding-bottom: 13px; pointer-events: none; opacity: 0; }
.eq i { width: 3px; height: 16px; border-radius: 1px; background: #fff; transform-origin: bottom; scale: 1 0.3; }
.row[data-playing="true"][data-paused="false"] .eq { opacity: 1; }
@media (prefers-reduced-motion: no-preference) {
  .row[data-paused="false"] .eq i { animation: eq 900ms ease-in-out infinite alternate; }
  .row[data-paused="false"] .eq i:nth-child(2) { animation-duration: 700ms; animation-delay: -300ms; }
  .row[data-paused="false"] .eq i:nth-child(3) { animation-duration: 1100ms; animation-delay: -600ms; }
}
@keyframes eq { from { scale: 1 0.25; } to { scale: 1 1; } }

.row-details {
  margin: 4px 12px 12px 70px;
  padding: 20px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  background: var(--background);
  display: grid; gap: 16px;
}
.row-details h4 { margin: 0 0 4px; font-size: 12px; font-weight: 500; color: var(--muted-foreground); }
.row-details p { margin: 0; white-space: pre-wrap; line-height: 1.6; max-width: 70ch; }
.detail-metas { display: flex; flex-wrap: wrap; gap: 6px 20px; font-size: 12px; color: var(--muted-foreground); }
.detail-metas b { color: var(--foreground); font-weight: 500; }
.detail-actions { display: flex; gap: 8px; flex-wrap: wrap; }

/* pending / failed */
.pending, .failed {
  display: grid; grid-template-columns: 44px minmax(0, 1fr) auto; gap: 14px; align-items: center;
  padding: 12px; border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  margin: 6px 0;
}
.pending .cover { background: var(--accent); color: var(--primary); }
@media (prefers-reduced-motion: no-preference) { .pending .cover .icon { animation: spin 1.4s linear infinite; } }
.pending-title, .failed-title { font-weight: 500; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.pending-sub { font-size: 13px; color: var(--muted-foreground); display: flex; gap: 10px; align-items: center; }
.progress { height: 4px; border-radius: 2px; background: var(--secondary); overflow: hidden; margin-top: 8px; }
.progress span { display: block; height: 100%; background: var(--primary); width: 0; transition: width 0.2s ease-out; }
.progress[data-indeterminate="true"] span { width: 30%; }
@media (prefers-reduced-motion: no-preference) {
  .progress[data-indeterminate="true"] span { animation: indet 1.6s ease-out infinite; }
}
@keyframes indet { from { translate: -100% 0; } to { translate: 340% 0; } }
.failed { background: var(--destructive-soft); border-color: rgba(239, 68, 68, 0.3); }
.failed .cover { background: var(--background); color: var(--destructive); }
.failed-title { color: var(--destructive-strong); }
.failed-sub { font-size: 13px; color: var(--destructive-strong); }
.failed .icon-btn { color: var(--destructive-strong); }

.empty {
  display: grid; justify-items: center; text-align: center; gap: 8px;
  padding: 80px 24px;
}
.empty-art { display: grid; place-items: center; width: 56px; height: 56px; margin-bottom: 8px; border-radius: 50%; background: var(--secondary); color: #9ca3af; }
.empty-art .icon { width: 28px; height: 28px; }
.empty h3 { margin: 0; font-size: 16px; line-height: 24px; font-weight: 600; }
.empty p { margin: 0; max-width: 42ch; color: var(--muted-foreground); text-wrap: pretty; }

/* ---------------- player ---------------- */
.player {
  display: grid;
  grid-template-columns: minmax(220px, 1fr) minmax(0, 2.2fr) minmax(220px, 1fr);
  align-items: center; gap: 24px;
  padding: 0 24px;
  background: var(--background);
  border-top: 1px solid var(--border);
  position: relative; z-index: 5;
}
.player-track { display: flex; align-items: center; gap: 12px; min-width: 0; }
.cover-player { width: 48px; height: 48px; }
.cover-player .tile-glyph { width: 20px; height: 20px; }
.player[data-empty="true"] .cover-player { background: var(--secondary); color: #9ca3af; }
.player-meta { min-width: 0; }
.player-title { font-weight: 500; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.player-sub { font-size: 12px; color: var(--muted-foreground); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.player[data-empty="true"] .player-title { color: var(--muted-foreground); font-weight: 400; }
.player-fav[aria-pressed="true"] { color: var(--primary); }
.player-fav[aria-pressed="true"] .icon { fill: currentColor; }

.player-center { display: grid; gap: 4px; justify-items: center; min-width: 0; }
.player-controls { display: flex; align-items: center; gap: 8px; }
.play-btn {
  display: grid; place-items: center;
  width: 36px; height: 36px; border-radius: 50%;
  border: 0; background: var(--primary); color: #fff;
  transition: background-color var(--t) ease-out;
}
.play-btn:disabled { opacity: 0.5; }
@media (hover: hover) { .play-btn:not(:disabled):hover { background: var(--primary-hover); } }
.play-btn .icon { grid-area: 1 / 1; width: 14px; height: 14px; fill: currentColor; stroke-width: 0; transition: opacity var(--t) ease-out; }
.play-btn .i-play { translate: 1px 0; }
.play-btn .i-pause { opacity: 0; }
.player[data-playing="true"] .play-btn .i-play { opacity: 0; }
.player[data-playing="true"] .play-btn .i-pause { opacity: 1; }

.seek { display: flex; align-items: center; gap: 12px; width: 100%; max-width: 720px; }
.time { font-size: 11px; color: var(--muted-foreground); min-width: 36px; }
.time:first-child { text-align: right; }
.wave { position: relative; flex: 1; height: 28px; cursor: pointer; touch-action: none; border-radius: 4px; }
.wave canvas { width: 100%; height: 100%; display: block; }
.wave-hover {
  position: absolute; bottom: calc(100% + 6px);
  translate: -50% 0;
  padding: 2px 6px; border-radius: 4px;
  border: 1px solid var(--border);
  background: var(--background); color: var(--foreground);
  box-shadow: var(--shadow-sm);
  font-size: 11px; pointer-events: none; white-space: nowrap;
}

.player-end { display: flex; align-items: center; justify-content: flex-end; gap: 4px; }
.volume { display: flex; align-items: center; gap: 4px; }
.volume input { width: 96px; }
#btn-repeat .i-rep1, .player[data-repeat="one"] #btn-repeat .i-rep { display: none; }
.player[data-repeat="one"] #btn-repeat .i-rep1 { display: block; }
.player:not([data-repeat="off"]) #btn-repeat { color: var(--accent-foreground); background: var(--accent); }
#btn-mute .i-mute, .player[data-muted="true"] #btn-mute .i-vol { display: none; }
.player[data-muted="true"] #btn-mute .i-mute { display: block; }

/* ---------------- clients ---------------- */
.clients { min-height: 0; display: flex; flex-direction: column; }
.clients-scroll { background: var(--muted); }
.clients-inner { max-width: 1200px; margin: 0 auto; padding: 32px 24px 48px; display: grid; gap: 24px; }
.clients-head { display: flex; align-items: flex-end; gap: 24px; justify-content: space-between; flex-wrap: wrap; }
.page-title { margin: 0; font-size: 30px; line-height: 38px; font-weight: 600; letter-spacing: -0.02em; }
.page-sub { margin: 4px 0 0; color: var(--muted-foreground); max-width: 70ch; text-wrap: pretty; }

.engine-card {
  display: flex; align-items: center; gap: 24px; flex-wrap: wrap;
  padding: 16px 24px; border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  background: var(--background);
  font-size: 14px; color: var(--muted-foreground);
}
.engine-card .state { display: flex; align-items: center; gap: 8px; color: var(--foreground); font-weight: 500; }
.engine-card .state .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--success); }
.engine-card[data-state="standby"] .state .dot { background: #9ca3af; }
.engine-card[data-state="offline"] { background: var(--destructive-soft); border-color: rgba(239, 68, 68, 0.3); color: var(--destructive-strong); }
.engine-card[data-state="offline"] .state { color: var(--destructive-strong); }
.engine-card[data-state="offline"] .state .dot { background: var(--destructive); }
.engine-card .kv b { color: var(--foreground); font-weight: 500; }

.table-wrap { border-radius: var(--radius-lg); border: 1px solid var(--border); background: var(--background); overflow-x: auto; }
.table { width: 100%; border-collapse: collapse; font-size: 14px; }
.table th {
  text-align: left; font-weight: 500; font-size: 12px; color: var(--muted-foreground);
  padding: 10px 16px; white-space: nowrap;
  background: var(--muted);
  border-bottom: 1px solid var(--border);
}
.table td { height: 52px; padding: 8px 16px; border-bottom: 1px solid var(--border); vertical-align: middle; }
.table tr:last-child td { border-bottom: 0; }
.table .num { text-align: right; font-variant-numeric: tabular-nums; }
.table td.num { font-family: var(--mono); }
@media (hover: hover) { .table tbody tr:hover td { background: var(--muted); } }
.client-cell { display: flex; align-items: center; gap: 12px; min-width: 200px; }
.client-cell b { display: block; font-weight: 500; }
.client-cell span { color: var(--muted-foreground); font-size: 12px; font-family: var(--mono); }
.badge {
  display: inline-flex; align-items: center; gap: 6px;
  height: 22px; padding: 0 8px; border-radius: 999px;
  font-size: 12px; font-weight: 500; white-space: nowrap;
}
.badge::before { content: ''; width: 6px; height: 6px; border-radius: 50%; background: currentColor; }
.badge-ok { background: var(--success-soft); color: var(--success-strong); }
.badge-off { background: var(--secondary); color: var(--secondary-foreground); }
.badge-owner { background: var(--accent); color: var(--accent-foreground); }
.badge-owner::before { display: none; }
.usage { display: grid; gap: 6px; min-width: 130px; }
.usage-text { font-size: 13px; font-variant-numeric: tabular-nums; }
.usage-bar { height: 4px; border-radius: 2px; background: var(--secondary); overflow: hidden; }
.usage-bar span { display: block; height: 100%; background: var(--primary); }
.usage[data-full="true"] .usage-bar span { background: var(--destructive); }
.usage[data-full="true"] .usage-text { color: var(--destructive-strong); }
.muted { color: var(--muted-foreground); }
.cell-actions { display: flex; justify-content: flex-end; gap: 4px; white-space: nowrap; }

/* ---------------- dialog ---------------- */
.dialog {
  padding: 0; border: 1px solid var(--border); border-radius: var(--radius-lg);
  background: var(--background); color: var(--foreground);
  width: min(480px, calc(100vw - 32px));
  box-shadow: var(--shadow-xl);
  overscroll-behavior: contain;
}
.dialog::backdrop { background: rgba(0, 0, 0, 0.5); }
@media (prefers-reduced-motion: no-preference) {
  .dialog[open] { animation: pop-in 0.15s ease-out both; }
}
.dialog-inner { display: grid; gap: 16px; padding: 24px; }
.dialog h2 { margin: 0; font-size: 18px; line-height: 28px; font-weight: 600; }
.dialog p { margin: 0; color: var(--muted-foreground); text-wrap: pretty; }
.dialog-actions { display: flex; justify-content: flex-end; gap: 8px; margin-top: 8px; flex-wrap: wrap; }
.creds { display: grid; border-radius: var(--radius-lg); border: 1px solid var(--border); background: var(--muted); }
.creds-row { display: flex; gap: 12px; align-items: center; min-height: 44px; padding: 0 6px 0 14px; }
.creds-row + .creds-row { border-top: 1px solid var(--border); }
.creds-row span { color: var(--muted-foreground); width: 56px; flex: none; font-size: 12px; }
.creds-row code { flex: 1; font-family: var(--mono); font-size: 13px; word-break: break-all; user-select: all; }

/* ---------------- toasts ---------------- */
.toasts {
  position: fixed; right: 24px; bottom: calc(var(--player-h) + 16px); z-index: 60;
  display: grid; gap: 8px; justify-items: end; pointer-events: none;
}
.toast {
  display: flex; align-items: center; gap: 10px;
  max-width: 380px; padding: 12px 16px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  background: var(--background); color: var(--foreground);
  box-shadow: var(--shadow-md);
  font-size: 14px; pointer-events: auto;
}
.toast .icon { color: var(--primary); }
.toast[data-kind="ok"] .icon { color: var(--success); }
.toast[data-kind="error"] { background: var(--destructive-soft); border-color: rgba(239, 68, 68, 0.3); color: var(--destructive-strong); }
.toast[data-kind="error"] .icon { color: var(--destructive); }
@media (prefers-reduced-motion: no-preference) {
  .toast { animation: toast-in 0.2s ease-out both; }
  .toast[data-leaving] { animation: toast-out 0.15s ease-out both; }
}
@media (prefers-reduced-motion: reduce) {
  .toast { animation: fade-in 0.15s ease-out both; }
  .toast[data-leaving] { animation: fade-in 0.15s ease-out reverse both; }
}
@keyframes toast-in { from { opacity: 0; translate: 0 8px; } }
@keyframes toast-out { to { opacity: 0; translate: 0 -4px; } }
@keyframes fade-in { from { opacity: 0; } }

/* ---------------- responsive ---------------- */
.mobile-tabs { display: none; }

@media (max-width: 1100px) {
  .player { grid-template-columns: minmax(0, 1fr) minmax(0, 1.6fr) auto; gap: 16px; }
  .volume input { width: 72px; }
  .quota { display: none !important; }
  .row-metas .key { display: none; }
}

@media (max-width: 860px) {
  :root { --player-h: 124px; --topbar-h: 56px; }
  .app { grid-template-rows: var(--topbar-h) minmax(0, 1fr) auto; }
  .topbar { gap: 12px; padding: 0 12px 0 16px; }
  .brand span, .user-name, .engine-pill .engine-text { display: none; }
  .engine-pill { padding: 0 8px; }
  .topnav-item { padding: 0 10px; }

  .studio { grid-template-columns: minmax(0, 1fr); grid-template-rows: minmax(0, 1fr) auto; }
  .studio[data-mobile-pane="compose"] .library,
  .studio[data-mobile-pane="library"] .composer { display: none; }
  .composer { border-right: 0; }
  .mobile-tabs {
    display: flex; gap: 4px; padding: 6px 12px;
    background: var(--background);
    border-top: 1px solid var(--border);
  }
  .mobile-tabs button {
    flex: 1; display: inline-flex; align-items: center; justify-content: center; gap: 8px;
    height: 36px; border: 0; border-radius: var(--radius);
    background: transparent; color: var(--muted-foreground); font-weight: 500;
  }
  .mobile-tabs button[aria-current="true"] { background: var(--accent); color: var(--accent-foreground); }

  .library-head { padding: 16px 16px 0; }
  .library-tools { margin-left: 0; width: 100%; }
  .search { flex: 1; width: auto; }
  .library-scroll { padding: 4px 4px 24px; }
  .row { grid-template-columns: 44px minmax(0, 1fr) auto; gap: 12px; }
  .row-metas { display: none; }
  .row-sub .sub-dur { display: inline; }
  .row-details { margin-left: 12px; }
  .composer-body { padding: 16px; }
  .divider { margin: 0 -16px; }
  .composer-foot { padding: 12px 16px; }
  .foot-hint { display: none; }
  .segmented .seg { padding: 0 6px; }

  .player {
    grid-template-columns: minmax(0, 1fr) auto;
    grid-template-areas: "track end" "center center";
    gap: 6px 12px; padding: 10px 16px calc(10px + env(safe-area-inset-bottom));
  }
  .player-track { grid-area: track; }
  .player-center { grid-area: center; grid-template-columns: auto 1fr; gap: 12px; justify-items: stretch; }
  .player-end { grid-area: end; }
  .volume { display: none; }
  .player-controls { gap: 2px; }

  .clients-inner { padding: 24px 16px 40px; }
  .page-title { font-size: 24px; line-height: 32px; }
  .login-card { padding: 24px; }
  .toasts { left: 16px; right: 16px; justify-items: stretch; }
}