/* ═══════════════════════════════════════════════════════════
   Base & Reset — 设计令牌、全局重置、排版基础、动画
   ═══════════════════════════════════════════════════════════ */

:root {
  --bg: #09090b;
  --bg-elevated: #121217;
  --surface: #18181b;
  --surface-hover: #222228;
  --surface-active: #2a2a32;
  --border: #27272a;
  --border-light: #2e2e36;
  --fg: #fafafa;
  --fg-secondary: #a1a1aa;
  --fg-tertiary: #71717a;
  --accent: #60a5fa;
  --accent-strong: #93bbfd;
  --accent-dim: #2563eb;
  --accent-glow: rgba(59, 130, 246, 0.15);
  --gradient-1: linear-gradient(135deg, #2563eb 0%, #3b82f6 50%, #60a5fa 100%);
  --success: #34d399;
  --success-dim: #065f46;
  --danger: #f87171;
  --danger-dim: #7f1d1d;
  --warning: #fbbf24;
  --warning-dim: #78350f;
  --gradient-1: linear-gradient(135deg, #2563eb 0%, #3b82f6 50%, #60a5fa 100%);
  --gradient-2: linear-gradient(135deg, #06b6d4 0%, #22d3ee 100%);
  --gradient-3: linear-gradient(135deg, #10b981 0%, #34d399 100%);
  --gradient-4: linear-gradient(135deg, #f59e0b 0%, #fbbf24 100%);
  --gradient-5: linear-gradient(135deg, #ef4444 0%, #f87171 100%);
  --gradient-6: linear-gradient(135deg, #6366f1 0%, #818cf8 100%);
  --gradient-7: linear-gradient(135deg, #64748b 0%, #94a3b8 100%);
  --glass: rgba(24, 24, 27, 0.8);
  --glass-border: rgba(255, 255, 255, 0.06);
  --glass-hover: rgba(255, 255, 255, 0.04);
  --radius-sm: 8px;
  --radius: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --shadow-card: 0 1px 2px rgba(0,0,0,0.4), 0 4px 16px rgba(0,0,0,0.2);
  --shadow-elevated: 0 4px 24px rgba(0,0,0,0.5), 0 0 0 1px rgba(255,255,255,0.05);
  --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  --transition: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

html.light {
  --bg: #fafafa;
  --bg-elevated: #ffffff;
  --surface: #ffffff;
  --surface-hover: #f4f4f5;
  --surface-active: #e4e4e7;
  --border: #e4e4e7;
  --border-light: #f4f4f5;
  --fg: #18181b;
  --fg-secondary: #71717a;
  --fg-tertiary: #a1a1aa;
  --accent: #3b82f6;
  --accent-strong: #2563eb;
  --accent-dim: #93bbfd;
  --accent-glow: rgba(59, 130, 246, 0.08);
  --gradient-1: linear-gradient(135deg, #2563eb 0%, #3b82f6 100%);
  --glass-border: rgba(0, 0, 0, 0.06);
  --glass-hover: rgba(0, 0, 0, 0.03);
  --shadow-card: 0 1px 3px rgba(0,0,0,0.04), 0 4px 12px rgba(0,0,0,0.04);
  --shadow-elevated: 0 8px 30px rgba(0,0,0,0.06), 0 0 0 1px rgba(0,0,0,0.04);
  --success-dim: #d1fae5;
  --danger-dim: #fee2e2;
  --warning-dim: #fef3c7;
  --gradient-1: linear-gradient(135deg, #2563eb 0%, #3b82f6 100%);
  --gradient-2: linear-gradient(135deg, #0891b2 0%, #06b6d4 100%);
  --gradient-3: linear-gradient(135deg, #059669 0%, #10b981 100%);
  --gradient-4: linear-gradient(135deg, #d97706 0%, #f59e0b 100%);
  --gradient-5: linear-gradient(135deg, #dc2626 0%, #ef4444 100%);
  --gradient-6: linear-gradient(135deg, #4f46e5 0%, #6366f1 100%);
  --gradient-7: linear-gradient(135deg, #475569 0%, #64748b 100%);
}

@view-transition { navigation: auto; }

::view-transition-old(root),
::view-transition-new(root) {
  animation: none;
}

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

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

body {
  font-family: var(--font);
  font-size: 14px; line-height: 1.6;
  color: var(--fg); background: var(--bg);
}

a { color: inherit; text-decoration: none; }

h1 { font-size: 1.75rem; font-weight: 700; letter-spacing: -0.03em; line-height: 1.15; }

h2 { font-size: 1.1rem; font-weight: 600; letter-spacing: -0.01em; }

h3 { font-size: 0.95rem; font-weight: 600; }

input:focus, select:focus, textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
}

::placeholder { color: var(--fg-tertiary); }

@keyframes pulse-dot {
  0%, 100% { box-shadow: 0 0 8px rgba(52,211,153,0.5); }
  50% { box-shadow: 0 0 16px rgba(52,211,153,0.3), 0 0 24px rgba(52,211,153,0.1); }
}

body.admin-page {
  overflow: hidden;
  height: 100vh;
}

code {
  font-family: var(--font-mono); font-size: 0.8rem;
  padding: 2px 8px; border-radius: 4px;
  background: var(--surface-hover); color: var(--accent-strong);
}

@keyframes slideIn { from { transform: translateX(100%); } to { transform: translateX(0); } }

@keyframes welcomeFadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes msgSlideIn {
  from { opacity: 0; transform: translateY(6px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes bubbleDotBounce {
  0%, 60%, 100% { transform: translateY(0); opacity: 0.35; }
  30% { transform: translateY(-7px); opacity: 1; }
}

@keyframes cursorBlink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0; }
}

@keyframes typingBounce {
  0%, 60%, 100% { transform: translateY(0); opacity: 0.35; }
  30% { transform: translateY(-5px); opacity: 1; }
}

@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }

@keyframes fadeInUp { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: translateY(0); } }

@keyframes llamaPulseSuccess {
  0%, 100% { box-shadow: 0 0 0 6px rgba(52,211,153,0.08), 0 0 18px rgba(52,211,153,0.22); }
  50% { box-shadow: 0 0 0 12px rgba(52,211,153,0.02), 0 0 28px rgba(52,211,153,0.12); }
}

@keyframes llamaPulseWarning {
  0%, 100% { box-shadow: 0 0 0 6px rgba(251,191,36,0.08), 0 0 18px rgba(251,191,36,0.22); }
  50% { box-shadow: 0 0 0 12px rgba(251,191,36,0.02), 0 0 28px rgba(251,191,36,0.12); }
}

@keyframes llamaPulseDanger {
  0%, 100% { box-shadow: 0 0 0 6px rgba(248,113,113,0.08), 0 0 18px rgba(248,113,113,0.20); }
  50% { box-shadow: 0 0 0 12px rgba(248,113,113,0.02), 0 0 28px rgba(248,113,113,0.10); }
}

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes modalFadeIn  { from { opacity: 0; } to { opacity: 1; } }

@keyframes modalFadeOut { from { opacity: 1; } to { opacity: 0; } }

@keyframes modalScaleIn  { from { opacity: 0; transform: scale(0.92) translateY(8px); } to { opacity: 1; transform: scale(1) translateY(0); } }

@keyframes modalScaleOut { from { opacity: 1; transform: scale(1); } to { opacity: 0; transform: scale(0.92) translateY(8px); } }