:root {
    color-scheme: dark;
    --bg: #0b1020;
    --bg-elevated: rgba(15, 23, 42, 0.88);
    --bg-soft: rgba(30, 41, 59, 0.85);
    --border: rgba(148, 163, 184, 0.18);
    --text: #e2e8f0;
    --text-muted: #94a3b8;
    --accent: #38bdf8;
    --idle: #64748b;
    --connecting: #f59e0b;
    --recording: #ef4444;
    --success: #22c55e;
    --shadow: 0 24px 70px rgba(15, 23, 42, 0.35);
    --radius-lg: 24px;
    --radius-md: 16px;
    --radius-sm: 12px;
  }
  
  * {
    box-sizing: border-box;
  }
  
  body {
    margin: 0;
    min-height: 100vh;
    font-family: Inter, "Segoe UI", Roboto, sans-serif;
    color: var(--text);
    background:
      radial-gradient(circle at top, rgba(56, 189, 248, 0.16), transparent 30%),
      linear-gradient(180deg, #020617, #0f172a 45%, #111827);
  }
  
  button,
  input,
  textarea {
    font: inherit;
  }
  
  .page {
    display: flex;
    justify-content: center;
    padding: 48px 20px;
  }
  
  .panel {
    width: min(980px, 100%);
    display: grid;
    gap: 20px;
  }
  
  .panel__header,
  .card {
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    backdrop-filter: blur(16px);
  }
  
  .panel__header {
    display: flex;
    justify-content: space-between;
    gap: 24px;
    padding: 28px;
  }
  
  .eyebrow {
    margin: 0 0 8px;
    color: var(--accent);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    font-size: 0.82rem;
    font-weight: 700;
  }
  
  h1,
  h2 {
    margin: 0;
  }
  
  .panel__description {
    margin: 12px 0 0;
    max-width: 68ch;
    color: var(--text-muted);
    line-height: 1.6;
  }
  
  .status-card {
    min-width: 180px;
    align-self: flex-start;
    padding: 18px 20px;
    border-radius: var(--radius-md);
    background: var(--bg-soft);
    border: 1px solid var(--border);
  }
  
  .status-card__label {
    display: block;
    margin-bottom: 8px;
    color: var(--text-muted);
    font-size: 0.85rem;
  }
  
  .status-card__value {
    font-size: 1.1rem;
  }
  
  .card {
    padding: 24px;
  }
  
  .form-grid {
    display: grid;
    gap: 16px;
    margin-top: 18px;
  }
  
  .field {
    display: grid;
    gap: 8px;
    color: var(--text-muted);
  }
  
  .field input,
  .transcript,
  .message-output {
    width: 100%;
    background: rgba(15, 23, 42, 0.72);
    color: var(--text);
    border: 1px solid rgba(148, 163, 184, 0.22);
    border-radius: var(--radius-sm);
    padding: 14px 16px;
  }
  
  .field input:focus,
  .transcript:focus {
    outline: 2px solid rgba(56, 189, 248, 0.45);
    border-color: rgba(56, 189, 248, 0.55);
  }
  
  .controls {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 20px;
  }
  
  .controls__copy {
    max-width: 56ch;
  }
  
  .controls__copy p {
    margin: 10px 0 0;
    color: var(--text-muted);
    line-height: 1.6;
  }
  
  .record-button {
    min-width: 220px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    padding: 18px 24px;
    border: 0;
    border-radius: 999px;
    color: #fff;
    font-size: 1rem;
    font-weight: 700;
    cursor: pointer;
    transition: transform 160ms ease, box-shadow 160ms ease, background 160ms ease;
  }
  
  .record-button:hover:not(:disabled) {
    transform: translateY(-1px);
  }
  
  .record-button:disabled {
    cursor: wait;
    opacity: 0.9;
  }
  
  .record-button__dot {
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: currentColor;
    box-shadow: 0 0 0 6px rgba(255, 255, 255, 0.16);
  }
  
  .record-button--idle {
    background: linear-gradient(135deg, #475569, var(--idle));
    box-shadow: 0 18px 35px rgba(100, 116, 139, 0.28);
  }
  
  .record-button--connecting {
    background: linear-gradient(135deg, #f97316, var(--connecting));
    box-shadow: 0 18px 35px rgba(245, 158, 11, 0.28);
    animation: pulse-connecting 1.35s infinite;
  }
  
  .record-button--recording {
    background: linear-gradient(135deg, #dc2626, var(--recording));
    box-shadow: 0 18px 35px rgba(239, 68, 68, 0.3);
    animation: pulse-recording 1.1s infinite;
  }
  
  .secondary-button {
    padding: 10px 16px;
    border: 1px solid rgba(148, 163, 184, 0.22);
    border-radius: 999px;
    background: rgba(15, 23, 42, 0.72);
    color: var(--text);
    cursor: pointer;
  }
  
  .section-title {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
  }
  
  .transcript {
    min-height: 240px;
    resize: vertical;
    line-height: 1.6;
  }
  
  .message-output {
    min-height: 96px;
    margin: 16px 0 0;
    overflow-x: auto;
    white-space: pre-wrap;
    color: #cbd5e1;
  }
  
  .status-idle {
    color: var(--text);
  }
  
  .status-connecting {
    color: #fbbf24;
  }
  
  .status-recording {
    color: var(--success);
  }
  
  .status-error {
    color: #f87171;
  }
  
  @keyframes pulse-recording {
    0%,
    100% {
      transform: scale(1);
    }
  
    50% {
      transform: scale(1.03);
    }
  }
  
  @keyframes pulse-connecting {
    0%,
    100% {
      transform: scale(1);
      filter: brightness(1);
    }
  
    50% {
      transform: scale(1.02);
      filter: brightness(1.08);
    }
  }
  
  @media (max-width: 760px) {
    .page {
      padding: 24px 14px;
    }
  
    .panel__header,
    .controls,
    .section-title {
      flex-direction: column;
      align-items: stretch;
    }
  
    .record-button,
    .secondary-button {
      width: 100%;
    }
  }