/* ============================================
   LifeRPG V5.1 — Base
   Design tokens, reset, typography, layout
   ============================================ */

:root {
  --bg-base: #08080a;
  --bg-surface: #111114;
  --bg-elevated: #18181c;
  --bg-input: #0e0e11;
  --text-primary: #fafafa;
  --text-secondary: #a1a1a6;
  --text-tertiary: #7a7a80;
  --accent: #7c8aff;
  --accent-dim: rgba(124,138,255,0.12);
  --accent-glow: rgba(124,138,255,0.25);
  --success: #4ade80;
  --success-dim: rgba(74,222,128,0.12);
  --danger: #f87171;
  --warning: #fbbf24;
  --warning-dim: rgba(251,191,36,0.1);
  --border: rgba(255,255,255,0.06);
  --border-visible: rgba(255,255,255,0.1);
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 20px;
  --radius-full: 9999px;
  --content-width: 640px;
  --nav-height: 52px;
  --bottom-bar-height: 60px;
  --font: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --font-mono: 'SF Mono', 'Fira Code', 'Cascadia Code', monospace;
}

*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { font-size: 16px; -webkit-font-smoothing: antialiased; }
body {
  font-family: var(--font);
  background: var(--bg-base);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
}
::selection { background: var(--accent-dim); color: var(--accent); }
::-webkit-scrollbar { width: 4px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.08); border-radius: var(--radius-full); }

h1 { font-size: 1.4rem; font-weight: 700; letter-spacing: -0.02em; }
h2 { font-size: 1.15rem; font-weight: 600; }
h3 { font-size: 0.95rem; font-weight: 600; }
p { color: var(--text-secondary); font-size: 0.9rem; }

.page { display: none; animation: pageIn 0.25s ease; padding-top: 20px; }
.page.active { display: block; }
@keyframes pageIn { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: translateY(0); } }

.text-muted { color: var(--text-tertiary); font-size: 0.8rem; }
.hidden { display: none !important; }

.app-container {
  max-width: var(--content-width); margin: 0 auto;
  min-height: 100vh; padding: 0 16px 80px 16px;
}