/* ---------- Reset / base ---------- */
*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
  background: #FAFAF8;
  color: #0A0A0A;
  font-size: 15px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}
button { font-family: inherit; cursor: pointer; }
button:disabled { cursor: not-allowed; }
input, textarea { font-family: inherit; color: inherit; }
::selection { background: #0A0A0A; color: #FAFAF8; }

:root {
  --bg: #FAFAF8;
  --surface: #FFFFFF;
  --border: #E8E8E5;
  --border-strong: #D4D4D0;
  --ink: #0A0A0A;
  --ink-2: #4B4B49;
  --ink-3: #8A8A87;
  --ink-4: #B8B8B5;
  --accent: #0A0A0A;
  --accent-soft: #F1F0EC;
  --danger: #B91C1C;
  --radius: 10px;
  --radius-lg: 14px;
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.04);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.06);
  --transition: 160ms cubic-bezier(.2,.6,.2,1);
}

/* ---------- Layout ---------- */
.shell {
  max-width: 880px;
  margin: 0 auto;
  padding: 48px 28px 96px;
}

.header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 40px;
}
.wordmark {
  font-family: 'Newsreader', 'Iowan Old Style', Georgia, serif;
  font-size: 22px;
  font-style: italic;
  letter-spacing: -0.01em;
  font-weight: 500;
}
.header-meta {
  font-size: 12px;
  color: var(--ink-3);
  letter-spacing: 0.02em;
}
.header-meta .dot {
  display: inline-block;
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--ink-4);
  margin-right: 6px;
  vertical-align: 1px;
  transition: background var(--transition);
}
.header-meta.live .dot { background: #16A34A; }

/* ---------- Mode tabs ---------- */
.mode-tabs {
  display: inline-flex;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 4px;
  margin-bottom: 28px;
}
.mode-tabs button {
  background: transparent;
  border: 0;
  padding: 8px 16px;
  font-size: 13.5px;
  font-weight: 500;
  color: var(--ink-2);
  border-radius: 999px;
  transition: background var(--transition), color var(--transition);
}
.mode-tabs button[aria-selected="true"] {
  background: var(--ink);
  color: var(--bg);
}
.mode-tabs button:hover:not([aria-selected="true"]) {
  color: var(--ink);
}

/* ---------- Cards / sections ---------- */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 22px;
  margin-bottom: 18px;
}

/* ---------- Active style chip above text ---------- */
.style-active {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 12px;
  min-height: 28px;
}
.style-active-label {
  font-size: 12px;
  color: var(--ink-3);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
.chip-active {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--ink);
  color: var(--bg);
  padding: 4px 6px 4px 12px;
  border-radius: 999px;
  font-size: 12.5px;
  font-weight: 500;
}
.chip-active button {
  background: rgba(255,255,255,0.15);
  color: var(--bg);
  border: 0;
  width: 18px; height: 18px;
  border-radius: 50%;
  font-size: 11px;
  line-height: 1;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}
.chip-active button:hover { background: rgba(255,255,255,0.3); }
.style-empty {
  font-size: 13px;
  color: var(--ink-3);
}

/* ---------- Text area ---------- */
.text-input {
  width: 100%;
  min-height: 140px;
  resize: vertical;
  background: transparent;
  border: 0;
  outline: 0;
  font-size: 17px;
  line-height: 1.55;
  color: var(--ink);
  padding: 0;
}
.text-input::placeholder { color: var(--ink-4); }

.text-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 14px;
  border-top: 1px solid var(--border);
  padding-top: 12px;
  font-size: 12.5px;
  color: var(--ink-3);
}
.text-meta-actions { display: flex; gap: 14px; }
.text-meta-actions button {
  background: transparent;
  border: 0;
  color: var(--ink-2);
  font-size: 12.5px;
  padding: 0;
}
.text-meta-actions button:hover { color: var(--ink); text-decoration: underline; }

/* ---------- Section header ---------- */
.section-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 14px;
}
.section-title {
  font-size: 13px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--ink-2);
}
.section-hint {
  font-size: 12px;
  color: var(--ink-3);
}

/* ---------- Style chip rows ---------- */
.chip-group {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.chip {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 8px 14px;
  font-size: 13px;
  font-weight: 500;
  color: var(--ink);
  transition: border-color var(--transition), background var(--transition);
  position: relative;
}
.chip:hover { border-color: var(--ink); }
.chip[aria-pressed="true"] {
  background: var(--ink);
  color: var(--bg);
  border-color: var(--ink);
}
.chip .chip-desc {
  display: block;
  font-size: 11px;
  font-weight: 400;
  color: var(--ink-3);
  margin-top: 2px;
}
.chip[aria-pressed="true"] .chip-desc { color: rgba(250,250,248,0.65); }
.chip-group--effects .chip { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 12.5px; }

.subsection { margin-top: 18px; }
.subsection-label {
  font-size: 11.5px;
  font-weight: 500;
  color: var(--ink-3);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 10px;
}

/* ---------- Preset gallery ---------- */
.preset-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 16px;
}
.preset-filters button {
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 5px 12px;
  font-size: 12.5px;
  font-weight: 500;
  color: var(--ink-2);
  transition: background var(--transition), color var(--transition), border-color var(--transition);
}
.preset-filters button:hover { color: var(--ink); border-color: var(--ink-3); }
.preset-filters button[aria-selected="true"] {
  background: var(--ink);
  color: var(--bg);
  border-color: var(--ink);
}

.preset-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 10px;
}

.preset {
  text-align: left;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 12px 14px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  transition: border-color var(--transition), transform var(--transition);
  cursor: pointer;
  min-height: 92px;
}
.preset:hover {
  border-color: var(--ink);
  transform: translateY(-1px);
}
.preset:active { transform: translateY(0); }

.preset-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 8px;
}
.preset-label {
  font-size: 13.5px;
  font-weight: 600;
  color: var(--ink);
  letter-spacing: -0.005em;
}
.preset-lang {
  font-size: 10.5px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--ink-3);
  background: var(--accent-soft);
  padding: 2px 7px;
  border-radius: 999px;
  flex-shrink: 0;
}
.preset-preview {
  font-size: 12.5px;
  color: var(--ink-2);
  line-height: 1.4;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.preset-preview[lang="hi"] {
  font-family: 'Noto Sans Devanagari', 'Inter', system-ui, sans-serif;
}
.preset-preview .control {
  color: var(--ink-3);
  font-style: italic;
}

/* ---------- Upload zone ---------- */
.upload-zone {
  border: 1px dashed var(--border-strong);
  border-radius: var(--radius);
  padding: 24px;
  text-align: center;
  background: var(--surface);
  transition: border-color var(--transition), background var(--transition);
}
.upload-zone.dragover { border-color: var(--ink); background: var(--accent-soft); }
.upload-zone p { margin: 0; color: var(--ink-2); font-size: 13.5px; }
.upload-zone strong { color: var(--ink); font-weight: 500; }
.upload-zone .upload-cta {
  display: inline-block;
  margin-top: 8px;
  font-size: 12.5px;
  color: var(--ink-3);
}

.upload-loaded {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 12px 14px;
  font-size: 13.5px;
}
.upload-loaded .file {
  display: flex; align-items: center; gap: 10px; color: var(--ink);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.upload-loaded button {
  background: transparent; border: 0; color: var(--ink-3); font-size: 13px;
}
.upload-loaded button:hover { color: var(--danger); }

.transcript-input {
  width: 100%;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 10px 12px;
  font-size: 14px;
  margin-top: 10px;
  background: var(--surface);
  outline: 0;
  transition: border-color var(--transition);
}
.transcript-input:focus { border-color: var(--ink); }

/* ---------- Advanced ---------- */
.advanced summary {
  list-style: none;
  cursor: pointer;
  font-size: 13px;
  color: var(--ink-2);
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.advanced summary::-webkit-details-marker { display: none; }
.advanced summary::before {
  content: '›';
  display: inline-block;
  font-size: 16px;
  transition: transform var(--transition);
}
.advanced[open] summary::before { transform: rotate(90deg); }
.advanced summary:hover { color: var(--ink); }

.adv-row {
  margin-top: 18px;
  display: grid;
  grid-template-columns: 180px 1fr;
  gap: 16px;
  align-items: center;
}
.adv-label {
  font-size: 13.5px;
  color: var(--ink);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  position: relative;
}
.adv-label .info {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 16px; height: 16px;
  border: 1px solid var(--border-strong);
  border-radius: 50%;
  font-size: 10px;
  color: var(--ink-3);
  cursor: help;
  font-weight: 500;
}
.adv-control { display: flex; align-items: center; gap: 12px; }
.adv-control input[type="range"] { flex: 1; }
.adv-value {
  min-width: 40px;
  text-align: right;
  font-variant-numeric: tabular-nums;
  font-size: 13px;
  color: var(--ink-2);
}
/* ---------- Reference tabs (Upload / Record) ---------- */
.ref-tabs {
  display: inline-flex;
  background: var(--accent-soft);
  border-radius: 999px;
  padding: 3px;
  margin-bottom: 14px;
}
.ref-tabs button {
  background: transparent;
  border: 0;
  padding: 6px 14px;
  font-size: 12.5px;
  font-weight: 500;
  color: var(--ink-2);
  border-radius: 999px;
}
.ref-tabs button[aria-selected="true"] {
  background: var(--surface);
  color: var(--ink);
  box-shadow: var(--shadow-sm);
}

/* ---------- Recorder UI ---------- */
.record-lang-toggle {
  display: inline-flex;
  background: var(--accent-soft);
  border-radius: 999px;
  padding: 3px;
  margin-bottom: 12px;
}
.record-lang-toggle button {
  background: transparent;
  border: 0;
  padding: 4px 12px;
  font-size: 12px;
  font-weight: 500;
  color: var(--ink-2);
  border-radius: 999px;
}
.record-lang-toggle button[aria-selected="true"] {
  background: var(--surface);
  color: var(--ink);
  box-shadow: var(--shadow-sm);
}

.record-help {
  font-size: 12.5px;
  color: var(--ink-3);
  margin: 0 0 8px 0;
}

.record-script {
  background: var(--accent-soft);
  border-left: 2px solid var(--ink);
  border-radius: 0 var(--radius) var(--radius) 0;
  padding: 14px 16px;
  margin: 0 0 16px 0;
  font-size: 15px;
  line-height: 1.55;
  color: var(--ink);
  font-family: 'Newsreader', 'Iowan Old Style', Georgia, serif;
  font-style: normal;
}
.record-script[lang="hi"] {
  font-family: 'Noto Sans Devanagari', 'Inter', system-ui, sans-serif;
  font-size: 16px;
  line-height: 1.6;
}

.record-controls {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 12px;
}
.record-btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: var(--surface);
  border: 1px solid var(--border-strong);
  color: var(--ink);
  font-size: 13.5px;
  font-weight: 500;
  padding: 9px 16px;
  border-radius: 999px;
  transition: border-color var(--transition), background var(--transition);
}
.record-btn:hover { border-color: var(--ink); }
.record-btn[data-recording="true"] {
  background: #FBE8E8;
  border-color: #C53030;
  color: #C53030;
}
.record-dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: #C53030;
  display: inline-block;
}
.record-btn[data-recording="true"] .record-dot {
  animation: rec-pulse 1.1s ease-in-out infinite;
}
@keyframes rec-pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.4; transform: scale(1.3); }
}
.record-timer {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 14px;
  color: var(--ink-2);
  font-variant-numeric: tabular-nums;
}

.record-result {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px;
}
.record-result audio {
  width: 100%;
  margin-bottom: 10px;
}
.record-actions {
  display: flex;
  gap: 10px;
  align-items: center;
}
.btn-compact {
  flex: 0 1 auto;
  padding: 8px 14px;
  font-size: 13px;
}
.btn-ghost {
  background: transparent;
  border: 1px solid var(--border-strong);
  color: var(--ink-2);
  padding: 8px 14px;
  border-radius: var(--radius);
  font-size: 13px;
  font-weight: 500;
  transition: border-color var(--transition), color var(--transition);
}
.btn-ghost:hover { border-color: var(--ink); color: var(--ink); }

.bg-select {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 7px 10px;
  font-size: 13px;
  color: var(--ink);
  outline: 0;
  font-family: inherit;
  min-width: 200px;
  cursor: pointer;
  transition: border-color var(--transition);
}
.bg-select:hover { border-color: var(--ink-3); }
.bg-select:focus { border-color: var(--ink); }

.toggle {
  position: relative;
  display: inline-block;
  width: 36px; height: 20px;
}
.toggle input { display: none; }
.toggle-slider {
  position: absolute;
  inset: 0;
  background: var(--border-strong);
  border-radius: 999px;
  transition: background var(--transition);
}
.toggle-slider::before {
  content: '';
  position: absolute;
  top: 2px; left: 2px;
  width: 16px; height: 16px;
  background: white;
  border-radius: 50%;
  transition: transform var(--transition);
  box-shadow: var(--shadow-sm);
}
.toggle input:checked + .toggle-slider { background: var(--ink); }
.toggle input:checked + .toggle-slider::before { transform: translateX(16px); }

/* ---------- Tooltip ---------- */
.tip {
  position: absolute;
  z-index: 10;
  bottom: calc(100% + 10px);
  left: -8px;
  width: 320px;
  background: var(--ink);
  color: var(--bg);
  padding: 14px 16px;
  border-radius: var(--radius);
  font-size: 12.5px;
  line-height: 1.55;
  box-shadow: var(--shadow-md);
  opacity: 0;
  pointer-events: none;
  transform: translateY(4px);
  transition: opacity var(--transition), transform var(--transition);
  white-space: pre-wrap;
}
.tip strong {
  display: block;
  font-size: 11.5px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: rgba(250,250,248,0.7);
  margin-bottom: 6px;
}
.adv-label:hover .tip,
.adv-label:focus-within .tip {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}
.tip::after {
  content: '';
  position: absolute;
  top: 100%; left: 16px;
  border: 6px solid transparent;
  border-top-color: var(--ink);
}

/* ---------- Generate button + result ---------- */
.generate-row {
  display: flex;
  gap: 12px;
  margin-top: 24px;
  align-items: center;
}
.btn-primary {
  flex: 1;
  background: var(--ink);
  color: var(--bg);
  border: 0;
  padding: 14px 20px;
  border-radius: var(--radius);
  font-size: 14.5px;
  font-weight: 500;
  letter-spacing: 0.01em;
  transition: opacity var(--transition), transform var(--transition);
  position: relative;
  overflow: hidden;
}
.btn-primary:hover:not(:disabled) { opacity: 0.92; }
.btn-primary:active:not(:disabled) { transform: translateY(1px); }
.btn-primary:disabled { opacity: 0.45; }
.btn-primary.loading {
  background: linear-gradient(110deg, var(--ink), #2a2a2a, var(--ink));
  background-size: 200% 100%;
  animation: shimmer 1.6s linear infinite;
}
@keyframes shimmer {
  0% { background-position: 100% 0; }
  100% { background-position: -100% 0; }
}

.kbd {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 11px;
  background: rgba(255,255,255,0.15);
  padding: 2px 6px;
  border-radius: 4px;
  margin-left: 8px;
}

.result {
  margin-top: 24px;
  padding: 22px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  display: none;
}
.result.show { display: block; animation: fadeUp 240ms cubic-bezier(.2,.6,.2,1); }
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}
.result audio { width: 100%; margin-bottom: 12px; }
.result-actions {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 13px;
  color: var(--ink-3);
}
.result-actions a {
  color: var(--ink);
  text-decoration: underline;
  text-decoration-color: var(--ink-4);
  text-underline-offset: 3px;
}
.result-actions a:hover { text-decoration-color: var(--ink); }

/* ---------- Toast (errors) ---------- */
.toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%) translateY(80px);
  background: var(--ink);
  color: var(--bg);
  padding: 12px 18px;
  border-radius: var(--radius);
  font-size: 13.5px;
  box-shadow: var(--shadow-md);
  opacity: 0;
  transition: transform var(--transition), opacity var(--transition);
  pointer-events: none;
  max-width: 90vw;
}
.toast.show {
  transform: translateX(-50%) translateY(0);
  opacity: 1;
}

/* ---------- Hindi text rendering ---------- */
[lang="hi"] {
  font-family: 'Noto Sans Devanagari', 'Inter', system-ui, sans-serif;
}

/* ---------- Mobile ---------- */
@media (max-width: 640px) {
  .shell { padding: 28px 18px 80px; }
  .adv-row { grid-template-columns: 1fr; gap: 8px; }
  .text-input { font-size: 16px; min-height: 110px; }
  .header { flex-direction: column; align-items: flex-start; gap: 6px; }
  .tip { width: min(280px, calc(100vw - 60px)); left: 0; }
}