/* MetaEcho STT — 企业简约风，蓝色主色 */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
[hidden] { display: none !important; }

:root {
  --primary: #1a6abf;
  --primary-light: #e8f0fe;
  --primary-dark: #0f4d8a;
  --gray-50: #f8f9fa;
  --gray-100: #f0f2f5;
  --gray-200: #e4e7ec;
  --gray-300: #c9cdd4;
  --gray-400: #9ea3ad;
  --gray-600: #6b7180;
  --gray-800: #2c303a;
  --gray-900: #1a1d24;
  --success: #22c55e;
  --danger: #ef4444;
  --warning: #f59e0b;
  --radius: 10px;
  --shadow: 0 1px 3px rgba(0,0,0,.08), 0 1px 2px rgba(0,0,0,.06);
  --shadow-lg: 0 4px 16px rgba(0,0,0,.1);
}

html { font-size: 15px; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Noto Sans SC", sans-serif;
  background: var(--gray-100);
  color: var(--gray-800);
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.app {
  width: 100%;
  max-width: 520px;
  background: #fff;
  border-radius: 16px;
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

/* Header */
.header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  border-bottom: 1px solid var(--gray-200);
}
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--primary);
}
.logo h1 { font-size: 1.1rem; font-weight: 600; color: var(--gray-800); }

.status-badge {
  font-size: .78rem;
  padding: 4px 12px;
  border-radius: 20px;
  background: var(--gray-100);
  color: var(--gray-600);
  white-space: nowrap;
}
.status-badge.ok { background: #dff1e8; color: #166534; }
.status-badge.err { background: #fee2e2; color: #991b1b; }
.status-badge.loading { background: var(--primary-light); color: var(--primary); animation: pulse 1.5s infinite; }

.auth-trigger {
  display: flex;
  align-items: center;
  gap: 4px;
  cursor: pointer;
  user-select: none;
}
.auth-trigger .auth-chevron { transition: transform .2s; color: var(--gray-400); }
.auth-trigger.open .auth-chevron { transform: rotate(180deg); }

/* Auth Panel */
.auth-panel {
  padding: 12px 20px 16px;
  background: var(--gray-50);
  border-bottom: 1px solid var(--gray-200);
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.auth-panel[hidden] { display: none !important; }
.auth-field { display: flex; flex-direction: column; gap: 3px; }
.auth-field label { font-size: .72rem; color: var(--gray-400); font-weight: 500; }
.auth-input-row { display: flex; gap: 6px; }
.auth-field input {
  flex: 1;
  font-size: .82rem;
  padding: 6px 10px;
  border: 1px solid var(--gray-300);
  border-radius: 6px;
  outline: none;
  background: #fff;
  color: var(--gray-800);
  font-family: 'SF Mono', 'Cascadia Code', 'Consolas', monospace;
  transition: border-color .15s;
}
.auth-field input:focus { border-color: var(--primary); }
.auth-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 2px;
}
.auth-btn {
  font-size: .78rem;
  padding: 5px 14px;
  border: 1px solid var(--gray-300);
  border-radius: 6px;
  background: #fff;
  color: var(--gray-600);
  cursor: pointer;
  transition: all .15s;
  white-space: nowrap;
}
.auth-btn:hover { border-color: var(--primary); color: var(--primary); background: var(--primary-light); }
.auth-btn.primary { background: var(--primary); color: #fff; border-color: var(--primary); }
.auth-btn.primary:hover { background: var(--primary-dark); border-color: var(--primary-dark); }
.auth-hint { font-size: .7rem; color: var(--gray-400); }

@keyframes pulse { 0%,100% { opacity: 1; } 50% { opacity: .6; } }

/* Main */
.main { padding: 24px 20px; display: flex; flex-direction: column; gap: 16px; }

/* Recorder Card */
.recorder-card {
  background: var(--gray-50);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  padding: 28px 24px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
  transition: border-color .2s;
}
.recorder-card.recording { border-color: var(--danger); background: #fff5f5; }

.recorder-card__header { text-align: center; }
.duration {
  font-size: 2.8rem;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  color: var(--gray-800);
  font-feature-settings: "tnum";
  line-height: 1.1;
}
.recording .duration { color: var(--danger); }
.status-text {
  font-size: .82rem;
  color: var(--gray-400);
  margin-top: 4px;
}

/* Record Button */
.record-btn {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  border: 3px solid var(--primary);
  background: #fff;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2px;
  color: var(--primary);
  transition: all .2s;
  position: relative;
}
.record-btn:hover:not(:disabled) { background: var(--primary-light); transform: scale(1.04); }
.record-btn:active:not(:disabled) { transform: scale(.96); }
.record-btn:disabled { opacity: .45; cursor: not-allowed; border-color: var(--gray-300); }
.record-btn svg { width: 28px; height: 28px; }
.record-btn span { font-size: .7rem; font-weight: 500; letter-spacing: .5px; }

.record-btn.recording {
  border-color: var(--danger);
  color: #fff;
  background: var(--danger);
  animation: rec-pulse 1.5s infinite;
}
@keyframes rec-pulse {
  0%,100% { box-shadow: 0 0 0 0 rgba(239,68,68,.35); }
  50% { box-shadow: 0 0 0 12px rgba(239,68,68,0); }
}

.recorder-card__footer .hint {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: .78rem;
  color: var(--gray-400);
}
.recorder-card__footer .hint svg { flex-shrink: 0; }

/* Result Card */
.result-card {
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  padding: 16px 18px;
}
.result-card__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 10px;
}
.result-card__header h2 { font-size: .85rem; font-weight: 600; color: var(--gray-600); }

.icon-btn {
  background: none;
  border: none;
  cursor: pointer;
  color: var(--gray-400);
  padding: 4px;
  border-radius: 4px;
  transition: all .15s;
  display: flex;
}
.icon-btn:hover { color: var(--primary); background: var(--primary-light); }

.result-text {
  font-size: .92rem;
  line-height: 1.65;
  color: var(--gray-800);
  white-space: pre-wrap;
  word-wrap: break-word;
  font-family: inherit;
  background: var(--gray-50);
  border-radius: 6px;
  padding: 12px 14px;
  min-height: 2em;
}

.result-meta {
  font-size: .75rem;
  color: var(--gray-400);
  margin-top: 8px;
  text-align: right;
}

/* Error Card */
.error-card {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  padding: 12px 14px;
  background: #fef2f2;
  border: 1px solid #fecaca;
  border-radius: var(--radius);
  color: var(--danger);
  font-size: .85rem;
  line-height: 1.5;
}
.error-card svg { flex-shrink: 0; margin-top: 2px; }

/* Footer */
.footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 20px;
  border-top: 1px solid var(--gray-200);
  font-size: .75rem;
  color: var(--gray-400);
}
.footer a { color: var(--primary); text-decoration: none; }
.footer a:hover { text-decoration: underline; }

/* Upload Area */
.upload-area {
  border: 2px dashed var(--gray-300);
  border-radius: var(--radius);
  padding: 20px 16px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  cursor: pointer;
  transition: all .2s;
  color: var(--gray-400);
  font-size: .82rem;
  position: relative;
}
.upload-area:hover { border-color: var(--primary); color: var(--primary); background: var(--primary-light); }
.upload-area.dragover { border-color: var(--primary); background: var(--primary-light); }
.upload-area svg { opacity: .6; }
.upload-area .upload-hint { font-size: .72rem; color: var(--gray-300); }
.upload-area .upload-progress { font-size: .78rem; color: var(--primary); }
.upload-area input[type="file"] {
  position: absolute; inset: 0; opacity: 0; cursor: pointer;
}

/* Spinner */
.spinner {
  display: inline-block;
  width: 16px;
  height: 16px;
  border: 2px solid var(--gray-200);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin .6s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* Responsive */
@media (max-width: 480px) {
  body { padding: 0; }
  .app { max-width: 100%; border-radius: 0; min-height: 100vh; }
  .main { padding: 20px 16px; }
  .duration { font-size: 2.2rem; }
}