/* Perceptio shared theme palette — dark default, light override via html[data-theme="light"] */

:root {
  /* surfaces */
  --bg:               #0f1117;
  --surface:          #1a1d2e;
  --surface-2:        #131620;
  --surface-3:        #151827;
  --surface-hover:    #1e2235;
  --surface-accent:   #1e2040;
  --btn-gray-bg:      #1e293b;
  --border:           #2d3148;

  /* text */
  --text-strong:      #ffffff;
  --text:             #e2e8f0;
  --text-muted:       #94a3b8;
  --text-dim:         #64748b;
  --text-dimmer:      #475569;

  /* accent indigo */
  --accent:           #6366f1;
  --accent-2:         #4f46e5;
  --accent-soft:      #a5b4fc;
  --accent-shadow:    rgba(99,102,241,0.5);
  --accent-tint:      rgba(99,102,241,0.13);

  /* blue tint */
  --tint-blue-bg:     #0c1a3d;
  --tint-blue-bg2:    #1e3a5f;
  --tint-blue-fg:     #60a5fa;
  --tint-blue-fg2:    #3b82f6;
  --tint-blue-soft:   #93c5fd;
  --tint-blue-shadow: rgba(96,165,250,0.2);

  /* green tint */
  --tint-green-bg:     #14532d;
  --tint-green-bg2:    #166534;
  --tint-green-fg:     #22c55e;
  --tint-green-fg2:    #10b981;
  --tint-green-soft:   #6ee7b7;
  --tint-green-shadow: rgba(34,197,94,0.53);

  /* red tint */
  --tint-red-bg:       #450a0a;
  --tint-red-bg2:      #7f1d1d;
  --tint-red-bg3:      #2a0a0a;
  --tint-red-fg:       #ef4444;
  --tint-red-fg2:      #f87171;
  --tint-red-soft:     #fca5a5;

  /* yellow / amber */
  --tint-yellow-bg:    #422006;
  --tint-yellow-bg2:   #431407;
  --tint-yellow-fg:    #eab308;
  --tint-yellow-fg2:   #f59e0b;
  --tint-yellow-soft:  #fbbf24;
  --tint-yellow-soft2: #fcd34d;
  --tint-yellow-text:  #854d0e;

  /* orange */
  --tint-orange-fg:    #f97316;
  --tint-orange-soft:  #fb923c;

  /* purple */
  --tint-purple-bg:    #2e1065;
  --tint-purple-fg:    #a78bfa;
  --tint-purple-fg2:   #8b5cf6;

  /* cyan */
  --tint-cyan-fg:      #06b6d4;

  /* brand accent (logo) */
  --brand-accent:      #c1d844;

  /* misc */
  --shadow:            rgba(0,0,0,0.6);
  --shadow-strong:     rgba(0,0,0,0.75);

  color-scheme: dark;
}

html[data-theme="light"] {
  /* surfaces */
  --bg:               #f5f7fa;
  --surface:          #ffffff;
  --surface-2:        #eef1f6;
  --surface-3:        #eef1f6;
  --surface-hover:    #e4e9f2;
  --surface-accent:   #eef2ff;
  --btn-gray-bg:      #e2e8f0;
  --border:           #d1d5db;

  /* text */
  --text-strong:      #0f1117;
  --text:             #1f2937;
  --text-muted:       #475569;
  --text-dim:         #64748b;
  --text-dimmer:      #94a3b8;

  /* accent indigo (keep recognizable) */
  --accent:           #4f46e5;
  --accent-2:         #4338ca;
  --accent-soft:      #4338ca;
  --accent-shadow:    rgba(79,70,229,0.32);
  --accent-tint:      rgba(79,70,229,0.10);

  /* tint backgrounds become pale, fg becomes saturated dark */
  --tint-blue-bg:     #dbeafe;
  --tint-blue-bg2:    #bfdbfe;
  --tint-blue-fg:     #1d4ed8;
  --tint-blue-fg2:    #1e40af;
  --tint-blue-soft:   #1e40af;
  --tint-blue-shadow: rgba(29,78,216,0.18);

  --tint-green-bg:     #dcfce7;
  --tint-green-bg2:    #86efac;
  --tint-green-fg:     #15803d;
  --tint-green-fg2:    #047857;
  --tint-green-soft:   #047857;
  --tint-green-shadow: rgba(21,128,61,0.36);

  --tint-red-bg:       #fee2e2;
  --tint-red-bg2:      #fecaca;
  --tint-red-bg3:      #fef2f2;
  --tint-red-fg:       #b91c1c;
  --tint-red-fg2:      #b91c1c;
  --tint-red-soft:     #991b1b;

  --tint-yellow-bg:    #fef3c7;
  --tint-yellow-bg2:   #fde68a;
  --tint-yellow-fg:    #b45309;
  --tint-yellow-fg2:   #b45309;
  --tint-yellow-soft:  #b45309;
  --tint-yellow-soft2: #92400e;
  --tint-yellow-text:  #78350f;

  --tint-orange-fg:    #c2410c;
  --tint-orange-soft:  #c2410c;

  --tint-purple-bg:    #ede9fe;
  --tint-purple-fg:    #6d28d9;
  --tint-purple-fg2:   #5b21b6;

  --tint-cyan-fg:      #0e7490;

  --shadow:            rgba(15,17,23,0.10);
  --shadow-strong:     rgba(15,17,23,0.18);

  color-scheme: light;
}

/* Theme toggle button (added to every page header) */
.theme-toggle {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-muted);
  font-size: 14px;
  width: 32px; height: 32px;
  border-radius: 50%;
  cursor: pointer;
  display: inline-flex; align-items: center; justify-content: center;
  transition: border-color 0.15s, color 0.15s, background 0.15s;
  padding: 0;
  flex-shrink: 0;
}
.theme-toggle:hover { border-color: var(--accent); color: var(--accent-soft); background: var(--surface-accent); }
.theme-toggle:active { transform: scale(0.94); }