:root {
  /* Backgrounds */
  --bg:            #0d1117;
  --surface:       #161b22;
  --surface-2:     #1c2128;
  --border:        #21262d;

  /* Text */
  --text-main:     #f0f6fc;
  --text-sub:      #b0bec5;
  --text-muted:    #8b9cb0;

  /* Accent */
  --accent:        #f97316;
  --accent-hover:  #fb923c;
  --accent-dim:    rgba(249, 115, 22, 0.15);

  /* Status */
  --success:       #4ade80;
  --error:         #f87171;
  --info:          #60a5fa;
  --holiday:       #818cf8;

  /* Layout */
  --nav-h:         64px;   /* bottom nav height */
  --header-h:      56px;   /* top header height */
  --radius:        12px;
  --radius-sm:     8px;

  /* Shadows */
  --shadow:        0 4px 24px rgba(0,0,0,0.4);
  --shadow-sm:     0 2px 8px rgba(0,0,0,0.3);
}

/* ── Reset ─────────────────────────────────────── */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  touch-action: manipulation;
  -webkit-tap-highlight-color: transparent;
}

html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  background: var(--bg);
  color: var(--text-main);
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  min-height: 100svh;
  overscroll-behavior: none;
}

/* ── Scrollbar ──────────────────────────────────── */
::-webkit-scrollbar { width: 4px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 2px; }