/* Golden Gate OS — unified design system */

:root {
  /* Spacing scale */
  --s-1: 4px;
  --s-2: 8px;
  --s-3: 12px;
  --s-4: 16px;
  --s-5: 24px;
  --s-6: 32px;

  /* Radii */
  --r-sm: 8px;
  --r-md: 12px;
  --r-lg: 14px;
  --r-xl: 18px;
  --r-pill: 999px;

  /* Golden Gate palette */
  --gg-fog: #d8e2ec;
  --gg-bay: #1a3a52;
  --gg-bridge: #c45a2c;
  --gg-sunset: #e8894a;
  --gg-night: #0b1420;
  --gg-mist: #9bb4c8;
  --gg-steel: #8a9aab;

  --accent: #0a84ff;
  --accent-soft: rgba(10, 132, 255, 0.22);
  --danger: #ff453a;
  --success: #30d158;
  --warning: #ffd60a;

  /* Dark theme (default) */
  --bg: #0b1420;
  --bg-elevated: rgba(28, 32, 42, 0.72);
  --bg-sidebar: rgba(18, 22, 32, 0.55);
  --bg-hover: rgba(255, 255, 255, 0.08);
  --bg-active: rgba(10, 132, 255, 0.28);
  --bg-card: rgba(255, 255, 255, 0.07);
  --border: rgba(255, 255, 255, 0.12);
  --border-strong: rgba(255, 255, 255, 0.22);
  --text: #f5f7fa;
  --text-dim: rgba(245, 247, 250, 0.72);
  --text-muted: rgba(245, 247, 250, 0.48);
  --text-inverse: #1c1c1e;
  --fill-control: rgba(255, 255, 255, 0.1);
  --fill-control-hover: rgba(255, 255, 255, 0.16);
  --fill-input: rgba(0, 0, 0, 0.22);

  --glass-intensity: 0.42;
  --glass-blur: calc(22px + (var(--glass-intensity) * 28px));
  --glass-sat: calc(150% + (var(--glass-intensity) * 45%));
  /* Upper-end wash opacity — more glass wash, not faint */
  --glass-tint: rgba(28, 36, 48, calc(0.42 + var(--glass-intensity) * 0.48));
  --glass-fill: rgba(255, 255, 255, calc(0.18 - var(--glass-intensity) * 0.05));
  --glass-stroke: rgba(255, 255, 255, calc(0.5 - var(--glass-intensity) * 0.14));
  --glass-specular: rgba(255, 255, 255, calc(0.68 - var(--glass-intensity) * 0.18));
  --glass-edge: rgba(0, 0, 0, calc(0.22 + var(--glass-intensity) * 0.24));

  --window-radius: 16px;
  --window-inner-radius: calc(var(--window-radius) - 1px);
  --sidebar-width: 184px;
  --menubar-h: 25px;
  --dock-h: 70px;

  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.12), 0 2px 8px rgba(0, 0, 0, 0.16);
  --shadow-md:
    0 2px 4px rgba(0, 0, 0, 0.12),
    0 8px 24px rgba(0, 0, 0, 0.28),
    0 16px 40px rgba(0, 0, 0, 0.18);
  /* Soft multi-layer macOS-style window shadows */
  --shadow-window:
    0 0 0 0.5px rgba(0, 0, 0, 0.35),
    0 1px 1px rgba(0, 0, 0, 0.12),
    0 4px 12px rgba(0, 0, 0, 0.22),
    0 12px 32px rgba(0, 0, 0, 0.32),
    0 28px 64px rgba(0, 0, 0, 0.38);
  --shadow-active:
    0 0 0 0.5px rgba(0, 0, 0, 0.4),
    0 2px 4px rgba(0, 0, 0, 0.14),
    0 8px 20px rgba(0, 0, 0, 0.28),
    0 20px 48px rgba(0, 0, 0, 0.4),
    0 40px 90px rgba(0, 0, 0, 0.48);

  --font-ui: "SF Pro Display", "SF Pro Text", "Manrope", -apple-system, BlinkMacSystemFont, "Helvetica Neue", sans-serif;
  --font-mono: "SF Mono", ui-monospace, Menlo, Consolas, monospace;
  /* Real macOS density — Ventura+ is compact, not marketing-poster */
  --fs-xs: 10px;
  --fs-sm: 11px;
  --fs-md: 12px;
  --fs-lg: 13px;
  --fs-xl: 15px;
  --fs-2xl: 22px;
  --lh: 1.28;

  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
  --ease-soft: cubic-bezier(0.4, 0, 0.2, 1);
  --dur-fast: 120ms;
  --dur: 180ms;
  --dur-slow: 320ms;
}

html[data-theme="light"] {
  --bg: #e8eef5;
  --bg-elevated: rgba(255, 255, 255, 0.78);
  --bg-sidebar: rgba(246, 248, 252, 0.82);
  --bg-hover: rgba(0, 0, 0, 0.05);
  --bg-active: rgba(10, 132, 255, 0.16);
  --bg-card: rgba(255, 255, 255, 0.7);
  --border: rgba(0, 0, 0, 0.08);
  --border-strong: rgba(0, 0, 0, 0.16);
  --text: #1c1c1e;
  --text-dim: rgba(28, 28, 30, 0.72);
  --text-muted: rgba(28, 28, 30, 0.45);
  --text-inverse: #f5f7fa;
  --fill-control: rgba(0, 0, 0, 0.06);
  --fill-control-hover: rgba(0, 0, 0, 0.1);
  --fill-input: rgba(255, 255, 255, 0.85);
  --glass-tint: rgba(255, 255, 255, calc(0.68 + var(--glass-intensity) * 0.22));
  --glass-fill: rgba(255, 255, 255, calc(0.58 - var(--glass-intensity) * 0.08));
  --glass-stroke: rgba(255, 255, 255, 0.82);
  --glass-edge: rgba(0, 0, 0, 0.12);
  --shadow-window:
    0 0 0 0.5px rgba(0, 0, 0, 0.1),
    0 1px 2px rgba(0, 0, 0, 0.06),
    0 4px 12px rgba(0, 0, 0, 0.08),
    0 14px 36px rgba(0, 0, 0, 0.14),
    0 28px 56px rgba(0, 0, 0, 0.12);
  --shadow-active:
    0 0 0 0.5px rgba(0, 0, 0, 0.12),
    0 2px 6px rgba(0, 0, 0, 0.08),
    0 12px 28px rgba(0, 0, 0, 0.12),
    0 28px 64px rgba(0, 0, 0, 0.16);
}

html.high-contrast {
  --border: currentColor;
  --border-strong: currentColor;
  --text-dim: var(--text);
  --text-muted: var(--text);
}

html.reduced-motion *,
html.reduced-motion *::before,
html.reduced-motion *::after {
  animation-duration: 0.01ms !important;
  animation-iteration-count: 1 !important;
  transition-duration: 0.01ms !important;
  scroll-behavior: auto !important;
}

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

html, body {
  width: 100%;
  height: 100%;
  overflow: hidden;
  font-family: var(--font-ui);
  font-size: var(--fs-md);
  line-height: var(--lh);
  background: var(--bg);
  color: var(--text);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  user-select: none;
  cursor: default;
}

button, input, textarea, select {
  font: inherit;
  color: inherit;
}

button {
  border: none;
  background: none;
  cursor: pointer;
}

.hidden { display: none !important; }
.invisible { opacity: 0; pointer-events: none; }

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* —— Materials —— */
.gg-material,
.liquid-glass {
  background: var(--glass-tint);
  backdrop-filter: blur(var(--glass-blur)) saturate(var(--glass-sat));
  -webkit-backdrop-filter: blur(var(--glass-blur)) saturate(var(--glass-sat));
  border: 1px solid var(--glass-stroke);
  box-shadow: inset 0 1px 0 var(--glass-specular), var(--shadow-sm);
}

.gg-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  padding: var(--s-4);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.06);
}

.gg-sidebar {
  width: var(--sidebar-width);
  flex: 0 0 var(--sidebar-width);
  background: var(--bg-sidebar);
  border-right: 1px solid var(--border);
  padding: var(--s-3);
  overflow: auto;
}

/* —— Controls —— */
.gg-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--s-2);
  min-height: 28px;
  padding: 0 var(--s-3);
  border-radius: var(--r-sm);
  background: var(--fill-control);
  border: 1px solid var(--border);
  transition: background var(--dur-fast) var(--ease-soft), transform var(--dur-fast) var(--ease-spring);
}
.gg-btn:hover { background: var(--fill-control-hover); }
.gg-btn:active { transform: scale(0.97); }

/* Universal press feedback — every surface responds */
.gg-icon-btn:active,
.dock-item:active,
.status-item:active,
.menu-apple:active,
.menu-items button:active,
.desk-icon:active {
  /* no transform — avoids fighting wallpaper/glass canvas sync jitter */
  filter: brightness(0.97);
}
.gg-btn.primary {
  background: var(--accent);
  border-color: transparent;
  color: white;
}
.gg-btn.danger {
  background: rgba(255, 69, 58, 0.18);
  color: #ffb3ad;
}
.gg-btn.ghost { background: transparent; border-color: transparent; }
.gg-btn:disabled { opacity: 0.45; pointer-events: none; }

.gg-icon-btn {
  width: 28px;
  height: 28px;
  border-radius: var(--r-sm);
  display: grid;
  place-items: center;
  background: var(--fill-control);
  transition: background var(--dur-fast) var(--ease-soft), transform var(--dur-fast) var(--ease-spring);
}
.gg-icon-btn:hover { background: var(--fill-control-hover); }
.gg-icon-btn:active { transform: scale(0.97); }

.gg-input,
.gg-select,
.gg-textarea {
  width: 100%;
  min-height: 30px;
  padding: 6px 10px;
  border-radius: var(--r-sm);
  border: 1px solid var(--border);
  background: var(--fill-input);
  outline: none;
  transition: border-color var(--dur-fast) var(--ease-soft), box-shadow var(--dur-fast) var(--ease-soft);
}
.gg-input:focus,
.gg-select:focus,
.gg-textarea:focus {
  border-color: color-mix(in srgb, var(--accent) 70%, white 10%);
  box-shadow: 0 0 0 3px var(--accent-soft);
}
.gg-textarea { min-height: 96px; resize: vertical; }

/* `.gg-toggle` is a liquid obround switch — see css/switch.css. */

.gg-seg {
  display: inline-flex;
  padding: 2px;
  border-radius: var(--r-sm);
  background: var(--fill-control);
  border: 1px solid var(--border);
  gap: 2px;
}
.gg-seg button {
  min-width: 32px;
  height: 24px;
  padding: 0 10px;
  border-radius: 6px;
  color: var(--text-dim);
  font-size: var(--fs-sm);
}
.gg-seg button.active {
  background: rgba(255, 255, 255, 0.16);
  color: var(--text);
  box-shadow: var(--shadow-sm);
}
html[data-theme="light"] .gg-seg button.active { background: white; }

.gg-slider {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 4px;
  border-radius: var(--r-pill);
  background: rgba(120, 120, 128, 0.35);
  outline: none;
}
.gg-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: white;
  box-shadow: var(--shadow-sm);
  cursor: pointer;
}

.gg-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 9px;
  border-radius: var(--r-pill);
  background: var(--fill-control);
  border: 1px solid var(--border);
  color: var(--text-dim);
  font-size: var(--fs-sm);
}

.gg-list-item {
  width: 100%;
  display: flex;
  align-items: center;
  gap: var(--s-3);
  text-align: left;
  padding: 8px 10px;
  border-radius: var(--r-md);
  color: var(--text);
  transition: background var(--dur-fast) var(--ease-soft);
}
.gg-list-item:hover { background: var(--bg-hover); }
.gg-list-item.active { background: var(--bg-active); }

.gg-toolbar {
  min-height: 44px;
  display: flex;
  align-items: center;
  gap: var(--s-2);
  padding: 8px 12px;
  border-bottom: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.03);
}

.gg-app {
  width: 100%;
  height: 100%;
  min-height: 0;
  display: flex;
  overflow: hidden;
  background: linear-gradient(160deg, rgba(255, 255, 255, 0.04), transparent 40%);
  color: var(--text);
  font-size: var(--fs-md);
}

.gg-main {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.gg-scroll { flex: 1; overflow: auto; min-height: 0; }

.gg-title {
  margin: 0;
  font-size: var(--fs-xl);
  font-weight: 650;
  letter-spacing: -0.02em;
}

.gg-muted { color: var(--text-dim); font-size: var(--fs-sm); }
.gg-empty {
  height: 100%;
  display: grid;
  place-items: center;
  color: var(--text-muted);
  text-align: center;
  padding: var(--s-5);
}

.gg-kbd {
  font-family: var(--font-mono);
  font-size: 10px;
  padding: 2px 5px;
  border-radius: 5px;
  background: var(--fill-control);
  border: 1px solid var(--border);
  color: var(--text-muted);
}

.gg-row { display: flex; align-items: center; gap: var(--s-2); }
.gg-row.spread { justify-content: space-between; }
.gg-stack { display: flex; flex-direction: column; gap: var(--s-3); }
.gg-grid { display: grid; gap: var(--s-3); }

/* Context menu */
.gg-menu {
  position: fixed;
  z-index: 10000;
  min-width: 180px;
  padding: 6px;
  border-radius: var(--r-lg);
  background: var(--bg-elevated);
  backdrop-filter: blur(28px) saturate(160%);
  border: 1px solid var(--border-strong);
  box-shadow: var(--shadow-md);
  animation: gg-pop var(--dur) var(--ease-spring);
}
.gg-menu button,
.gg-menu .gg-menu-item {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 7px 10px;
  border-radius: 8px;
  text-align: left;
  font-size: var(--fs-sm);
}
.gg-menu button:hover,
.gg-menu .gg-menu-item:hover { background: var(--accent); color: white; }
.gg-menu .sep {
  height: 1px;
  margin: 5px 6px;
  background: var(--border);
}

/* Notifications */
.gg-toast-stack {
  position: fixed;
  top: calc(var(--menubar-h) + 12px);
  right: 14px;
  z-index: 12000;
  display: flex;
  flex-direction: column;
  gap: 8px;
  width: min(340px, calc(100vw - 28px));
  pointer-events: none;
}
.gg-toast {
  pointer-events: auto;
  padding: 12px 14px;
  border-radius: var(--r-xl);
  background: var(--bg-elevated);
  backdrop-filter: blur(24px);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-md);
  animation: gg-toast-in var(--dur-slow) var(--ease-out);
  will-change: opacity;
  contain: layout paint;
}
.gg-toast strong { display: block; margin-bottom: 2px; }

@keyframes gg-pop {
  from { opacity: 0; }
  to { opacity: 1; }
}
@keyframes gg-slide-in {
  from { opacity: 0; }
  to { opacity: 1; }
}
@keyframes gg-toast-in {
  from { opacity: 0; }
  to { opacity: 1; }
}
@keyframes gg-fade {
  from { opacity: 0; }
  to { opacity: 1; }
}

/* Snap guides */
.gg-snap-guide {
  position: fixed;
  pointer-events: none;
  z-index: 9990;
  background: color-mix(in srgb, var(--accent) 55%, transparent);
  border-radius: 4px;
  opacity: 0;
  transition: opacity var(--dur-fast);
}
.gg-snap-guide.show { opacity: 1; }