@import url("https://fonts.googleapis.com/css2?family=JetBrains+Mono:wght@400;500;600&family=Plus+Jakarta+Sans:wght@400;500;600;700;800&display=swap");

:root {
  --spark-bg-root: #08090c;
  --spark-bg-panel: #10121a;
  --spark-bg-card: #161926;
  --spark-bg-elevated: #1c2033;
  --spark-bg-input: #0d0f16;
  --spark-bg-hover: #1f2340;

  --spark-border: rgba(255, 255, 255, 0.06);
  --spark-border-focus: rgba(120, 100, 255, 0.5);

  --spark-accent: #8b6eff;
  --spark-accent-light: #b8a4ff;
  --spark-accent-dim: rgba(139, 110, 255, 0.18);
  --spark-accent-glow: rgba(139, 110, 255, 0.4);

  --spark-success: #34d399;
  --spark-warning: #fbbf24;
  --spark-danger: #f87171;

  --spark-text-1: #ecedf4;
  --spark-text-2: #9698ad;
  --spark-text-3: #7e8099;

  --font-sans: "Plus Jakarta Sans", -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: "JetBrains Mono", "SF Mono", Consolas, monospace;

  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-xl: 28px;

  --shadow-card: 0 2px 8px rgba(0, 0, 0, 0.35), 0 12px 40px rgba(0, 0, 0, 0.25);
  --shadow-glow: 0 0 30px var(--spark-accent-glow);
  --shadow-input: inset 0 1px 3px rgba(0, 0, 0, 0.4);
}

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-sans);
  background: var(--spark-bg-root);
  color: var(--spark-text-1);
  min-height: 100vh;
  min-height: 100svh;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 24px 16px 40px;
  gap: 20px;
  overflow-x: hidden;
  background-image: linear-gradient(rgba(124, 92, 252, 0.018) 1px, transparent 1px),
    linear-gradient(90deg, rgba(124, 92, 252, 0.018) 1px, transparent 1px);
  background-size: 48px 48px;
}

/* ── Header ── */
.header {
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
}

.header__badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px;
  border-radius: 999px;
  background: var(--spark-accent-dim);
  border: 1px solid rgba(124, 92, 252, 0.2);
  color: var(--spark-accent-light);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.header__badge::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--spark-accent);
  box-shadow: 0 0 8px var(--spark-accent);
  animation: pulse-dot 2s ease-in-out infinite;
}

@keyframes pulse-dot {
  0%,
  100% {
    opacity: 1;
    transform: scale(1);
  }
  50% {
    opacity: 0.5;
    transform: scale(0.8);
  }
}

.header__title {
  font-size: clamp(1.5rem, 4vw, 2.25rem);
  font-weight: 800;
  letter-spacing: -0.035em;
  background: linear-gradient(135deg, #ecedf4 30%, var(--spark-accent-light) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1.15;
}

.header__subtitle {
  color: var(--spark-text-3);
  font-size: 0.82rem;
  font-weight: 500;
}

/* ── Controls panel ── */
.controls {
  width: min(94vw, 720px);
  background: var(--spark-bg-panel);
  border: 1px solid var(--spark-border);
  border-radius: var(--radius-lg);
  padding: 18px 20px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  box-shadow: var(--shadow-card);
}

.field {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.field__label {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--spark-text-3);
}

textarea,
.response-area {
  width: 100%;
  padding: 12px 14px;
  background: var(--spark-bg-input);
  border: 1px solid var(--spark-border);
  border-radius: var(--radius-sm);
  color: var(--spark-text-1);
  box-shadow: var(--shadow-input);
}

.response-area {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  line-height: 1.6;
  overflow-y: auto;
  white-space: pre-wrap;
  word-break: break-word;
}

.response-area--tall {
  min-height: calc(1.6em * 6 + 24px);
  max-height: calc(1.6em * 14 + 24px);
}

.response-area::-webkit-scrollbar {
  width: 6px;
}

.response-area::-webkit-scrollbar-thumb {
  background: var(--spark-accent-dim);
  border-radius: 10px;
}

/* ── Buttons ── */
.btn-action {
  min-width: 110px;
  height: 44px;
  padding: 0 20px;
  border: none;
  border-radius: var(--radius-sm);
  font-family: var(--font-sans);
  font-size: 0.85rem;
  font-weight: 700;
  cursor: pointer;
  transition: transform 0.12s, box-shadow 0.25s, background 0.2s;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  letter-spacing: 0.02em;
}

.btn-action:hover:not(:disabled) {
  transform: translateY(-1px);
}

.btn-action:active:not(:disabled) {
  transform: translateY(0);
}

.btn-action:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.btn-action.is-start {
  background: var(--spark-accent);
  color: #fff;
  box-shadow: 0 4px 18px rgba(124, 92, 252, 0.35);
}

.btn-action.is-start:hover:not(:disabled) {
  box-shadow: 0 6px 24px rgba(124, 92, 252, 0.5);
}

.btn-action.is-stop {
  background: var(--spark-danger);
  color: #fff;
  box-shadow: 0 4px 18px rgba(248, 113, 113, 0.3);
}

.btn-action.is-stop:hover:not(:disabled) {
  box-shadow: 0 6px 24px rgba(248, 113, 113, 0.45);
}

/* ── Status bar ── */
.status-bar {
  width: min(94vw, 720px);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.status-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 5px 14px;
  border-radius: 999px;
  background: var(--spark-bg-card);
  border: 1px solid var(--spark-border);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--spark-text-2);
}

.status-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--spark-text-3);
  transition: background 0.3s, box-shadow 0.3s;
}

.status-dot.online {
  background: var(--spark-success);
  box-shadow: 0 0 8px rgba(52, 211, 153, 0.5);
}

.status-dot.loading {
  background: var(--spark-warning);
  animation: pulse-dot 1.2s ease-in-out infinite;
}

.status-dot.error {
  background: var(--spark-danger);
}

.webgpu-tag {
  padding: 4px 12px;
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 0.62rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  background: rgba(52, 211, 153, 0.1);
  color: var(--spark-success);
  border: 1px solid rgba(52, 211, 153, 0.15);
}

.webgpu-warning {
  width: min(94vw, 720px);
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  background: rgba(248, 113, 113, 0.1);
  border: 1px solid rgba(248, 113, 113, 0.2);
  color: var(--spark-danger);
  font-size: 0.85rem;
  text-align: center;
}

.footer {
  color: var(--spark-text-3);
  font-size: 0.75rem;
  text-align: center;
}

.footer a {
  color: var(--spark-accent-light);
  text-decoration: none;
}

.footer a:hover {
  text-decoration: underline;
}

.hidden {
  display: none !important;
}

/* ═══════════════════════════════════════════════════════════════
   ASR-specific components (same tokens)
   ═══════════════════════════════════════════════════════════════ */

/* Mode switch (segmented) */
.mode-switch {
  width: min(94vw, 720px);
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 6px;
  padding: 6px;
  background: var(--spark-bg-panel);
  border: 1px solid var(--spark-border);
  border-radius: var(--radius-md);
}

.mode-btn {
  height: 40px;
  border: none;
  border-radius: var(--radius-sm);
  background: transparent;
  cursor: pointer;
  color: var(--spark-text-2);
  font-family: var(--font-sans);
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  transition: background 0.18s, color 0.18s;
}

.mode-btn:hover {
  color: var(--spark-text-1);
}

.mode-btn.active {
  background: var(--spark-accent-dim);
  color: var(--spark-accent-light);
  box-shadow: inset 0 0 0 1px rgba(124, 92, 252, 0.25);
}

.mode-btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.mode-btn:disabled:hover {
  color: var(--spark-text-2);
}

.mic-btn:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

/* Load-model bar (shown until the model is ready, then hidden) */
.model-load {
  width: min(94vw, 720px);
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.model-load .btn-action {
  width: 100%;
}

.model-load .hint {
  text-align: center;
}

/* Options row (lang_id + tag toggle) */
.opts {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px;
}

.opts label {
  font-size: 0.78rem;
  color: var(--spark-text-2);
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.opts input[type="number"] {
  width: 70px;
  padding: 8px 10px;
  background: var(--spark-bg-input);
  border: 1px solid var(--spark-border);
  border-radius: var(--radius-sm);
  color: var(--spark-text-1);
  font-family: var(--font-mono);
  box-shadow: var(--shadow-input);
}

.opts input[type="number"]:focus {
  outline: none;
  border-color: var(--spark-border-focus);
}

.opts input[type="checkbox"] {
  accent-color: var(--spark-accent);
  width: 15px;
  height: 15px;
  cursor: pointer;
}

.lang-chip {
  margin-left: auto;
  padding: 4px 12px;
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 0.66rem;
  font-weight: 600;
  background: var(--spark-accent-dim);
  color: var(--spark-accent-light);
  border: 1px solid rgba(124, 92, 252, 0.2);
}

/* Mode panels */
.mode-panel {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.mic-row {
  display: flex;
  align-items: center;
  gap: 16px;
}

/* Big record / listen button */
.mic-btn {
  min-width: 170px;
  height: 52px;
  padding: 0 24px;
  border: none;
  border-radius: 999px;
  cursor: pointer;
  font-family: var(--font-sans);
  font-size: 0.92rem;
  font-weight: 700;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  transition: transform 0.12s, box-shadow 0.25s, background 0.2s;
  letter-spacing: 0.02em;
}

.mic-btn:hover:not(:disabled) {
  transform: translateY(-1px);
}

.mic-btn.is-start {
  background: var(--spark-accent);
  color: #fff;
  box-shadow: 0 6px 22px rgba(124, 92, 252, 0.4);
}

.mic-btn.is-stop {
  background: var(--spark-danger);
  color: #fff;
  box-shadow: 0 6px 22px rgba(248, 113, 113, 0.4);
  animation: pulse-rec 1.6s ease-in-out infinite;
}

@keyframes pulse-rec {
  0%,
  100% {
    box-shadow: 0 6px 22px rgba(248, 113, 113, 0.4);
  }
  50% {
    box-shadow: 0 6px 30px rgba(248, 113, 113, 0.7);
  }
}

/* Level meter */
.level-meter {
  flex: 1;
  height: 8px;
  border-radius: 999px;
  background: var(--spark-bg-input);
  overflow: hidden;
  box-shadow: var(--shadow-input);
}

.level-fill {
  height: 100%;
  width: 0%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--spark-accent), var(--spark-accent-light));
  transition: width 0.08s linear;
}

.timer {
  font-family: var(--font-mono);
  font-size: 0.95rem;
  color: var(--spark-text-1);
  min-width: 56px;
  text-align: right;
}

.hint {
  font-size: 0.78rem;
  color: var(--spark-text-3);
}

/* Live indicator */
.live-dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--spark-text-3);
}

.live-dot.online {
  background: var(--spark-danger);
  box-shadow: 0 0 10px var(--spark-danger);
  animation: pulse-dot 1s ease-in-out infinite;
}

/* File row */
.file-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
}

.file-row input[type="file"] {
  color: var(--spark-text-2);
  font-size: 0.82rem;
}

.file-row input[type="file"]::file-selector-button {
  margin-right: 12px;
  padding: 9px 16px;
  border: 1px solid var(--spark-border);
  border-radius: var(--radius-sm);
  background: var(--spark-bg-elevated);
  color: var(--spark-text-1);
  font-family: var(--font-sans);
  font-weight: 600;
  cursor: pointer;
}

.file-row input[type="file"]::file-selector-button:hover {
  background: var(--spark-bg-hover);
}

/* Transcript empty state */
.response-area.is-empty {
  color: var(--spark-text-3);
}

/* Diagnostics */
.diag-toggle {
  align-self: flex-start;
  background: none;
  border: none;
  color: var(--spark-text-3);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  cursor: pointer;
  padding: 0;
}

.diag-toggle:hover {
  color: var(--spark-accent-light);
}

.diag {
  font-size: 0.74rem;
  line-height: 1.5;
  min-height: 80px;
  max-height: 200px;
}

.diag .ok {
  color: var(--spark-success);
}

.diag .err {
  color: var(--spark-danger);
}

.diag .dim {
  color: var(--spark-text-3);
}

@media (max-width: 640px) {
  body {
    padding: 14px 10px 30px;
    gap: 14px;
  }
  .mic-row {
    flex-wrap: wrap;
  }
  .mic-btn {
    width: 100%;
  }
  .status-bar {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }
}