:root {
  --bg-color: #0d1117;
  --card-bg: rgba(22, 27, 34, 0.85);
  --border-color: rgba(255, 255, 255, 0.1);
  --text-primary: #f0f6fc;
  --text-secondary: #8b949e;
  --accent-orange: #f38020;
  --accent-cyan: #00d2ff;
  --accent-purple: #7928ca;
  --btn-gradient: linear-gradient(135deg, #f38020 0%, #fa541c 100%);
  --btn-clone: linear-gradient(135deg, #7928ca 0%, #ff0080 100%);
  --success: #3fb950;
  --radius: 12px;
}

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

body {
  font-family: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background-color: var(--bg-color);
  color: var(--text-primary);
  min-height: 100vh;
  display: flex;
  justify-content: center;
  padding: 24px 16px;
  background-image: 
    radial-gradient(circle at 10% 20%, rgba(243, 128, 32, 0.08) 0%, transparent 40%),
    radial-gradient(circle at 90% 80%, rgba(121, 40, 202, 0.08) 0%, transparent 40%);
}

.app-container {
  width: 100%;
  max-width: 900px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

/* Navbar */
.navbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 20px;
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  backdrop-filter: blur(10px);
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

.logo-icon {
  font-size: 24px;
  background: rgba(243, 128, 32, 0.2);
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 10px;
  border: 1px solid rgba(243, 128, 32, 0.3);
}

.brand-text h1 {
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -0.5px;
}

.badge-cf {
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--accent-orange);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.connection-status {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.status-dot {
  width: 8px;
  height: 8px;
  background-color: var(--success);
  border-radius: 50%;
  box-shadow: 0 0 8px var(--success);
}

/* Tabs */
.tabs-nav {
  display: flex;
  gap: 10px;
  overflow-x: auto;
  padding-bottom: 4px;
}

.tab-btn {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  padding: 10px 18px;
  border-radius: 10px;
  cursor: pointer;
  font-weight: 600;
  font-size: 0.9rem;
  display: flex;
  align-items: center;
  gap: 8px;
  transition: all 0.2s ease;
  white-space: nowrap;
}

.tab-btn:hover {
  background: rgba(255, 255, 255, 0.08);
  color: var(--text-primary);
}

.tab-btn.active {
  background: var(--card-bg);
  border-color: var(--accent-orange);
  color: var(--text-primary);
  box-shadow: 0 2px 12px rgba(243, 128, 32, 0.2);
}

/* Card */
.glass-card {
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  backdrop-filter: blur(12px);
  padding: 24px;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 14px;
}

.card-header h3 {
  font-size: 1.15rem;
  font-weight: 700;
}

.pill {
  font-size: 0.75rem;
  padding: 4px 10px;
  border-radius: 20px;
  font-weight: 600;
}

.pill-serverless {
  background: rgba(243, 128, 32, 0.15);
  color: var(--accent-orange);
  border: 1px solid rgba(243, 128, 32, 0.3);
}

.pill-webgpu {
  background: rgba(121, 40, 202, 0.15);
  color: #ff70a6;
  border: 1px solid rgba(121, 40, 202, 0.3);
}

.pill-whisper {
  background: rgba(0, 210, 255, 0.15);
  color: var(--accent-cyan);
  border: 1px solid rgba(0, 210, 255, 0.3);
}

/* Forms */
.form-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 16px;
}

label {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-secondary);
}

textarea, select {
  background: rgba(13, 17, 23, 0.7);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  padding: 12px;
  border-radius: 8px;
  font-family: inherit;
  font-size: 0.95rem;
  transition: border-color 0.2s;
  outline: none;
}

textarea:focus, select:focus {
  border-color: var(--accent-orange);
}

.grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

@media (max-width: 600px) {
  .grid-2 {
    grid-template-columns: 1fr;
  }
}

/* Buttons */
.btn {
  padding: 12px 22px;
  border-radius: 8px;
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  border: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  transition: all 0.2s;
}

.btn-primary {
  background: var(--btn-gradient);
  color: white;
}

.btn-primary:hover {
  filter: brightness(1.1);
  transform: translateY(-1px);
}

.btn-gradient {
  background: var(--btn-clone);
  color: white;
}

.btn-gradient:hover {
  filter: brightness(1.1);
  transform: translateY(-1px);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.08);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
}

.btn-outline {
  background: transparent;
  color: var(--text-secondary);
  border: 1px solid var(--border-color);
}

.btn-outline:hover {
  border-color: var(--text-primary);
  color: var(--text-primary);
}

.btn-sm {
  padding: 6px 14px;
  font-size: 0.82rem;
}

.btn-action-row {
  margin-top: 18px;
  display: flex;
  justify-content: flex-end;
}

/* Steps in Tab 2 */
.step-card {
  display: flex;
  gap: 16px;
  margin-bottom: 20px;
  padding: 16px;
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--border-color);
  border-radius: 10px;
}

.step-num {
  width: 32px;
  height: 32px;
  background: var(--accent-purple);
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  flex-shrink: 0;
}

.step-content {
  flex: 1;
}

.step-content h4 {
  margin-bottom: 4px;
}

.hint {
  font-size: 0.82rem;
  color: var(--text-secondary);
  margin-bottom: 12px;
}

.record-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.audio-preview {
  margin-top: 12px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

/* Player Box */
.player-box {
  margin-top: 24px;
  padding: 16px;
  background: rgba(0, 0, 0, 0.3);
  border: 1px solid var(--border-color);
  border-radius: 10px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.player-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.9rem;
  font-weight: 600;
}

audio {
  width: 100%;
  height: 40px;
}

/* Tab Switching */
.tab-pane {
  display: none;
}

.tab-pane.active {
  display: block;
}

.hidden {
  display: none !important;
}

/* Diagnostics Footer */
.diag-footer {
  display: flex;
  justify-content: space-between;
  padding: 12px 18px;
  background: rgba(22, 27, 34, 0.6);
  border: 1px solid var(--border-color);
  border-radius: 10px;
  font-size: 0.8rem;
  flex-wrap: wrap;
  gap: 10px;
}

.diag-label {
  color: var(--text-secondary);
  margin-right: 6px;
}

.diag-val {
  font-weight: 600;
  color: var(--text-primary);
}

.success-text {
  color: var(--success);
}

/* Spinner */
.spinner {
  width: 16px;
  height: 16px;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-radius: 50%;
  border-top-color: white;
  animation: spin 0.8s linear infinite;
  display: inline-block;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}