/**
 * Qahera UI Kit — Dock Component (Native CSS)
 * 
 * Bottom navigation bar and mobile application dock offering thumb-friendly
 * destinations, badges, active indicators, and safe-area support.
 * 
 * @spec 01-CORE-SPEC §3.2
 * @version 1.0.0
 */

/* ==========================================================================
   1. Root Dock Surface
   ========================================================================== */

.qhr-dock {
  --_dock-bg: var(--qhr-surface-elevated, #111a27);
  --_dock-fg: var(--qhr-content-secondary, #94a3b8);
  --_dock-fg-active: var(--qhr-color-primary-500, #c7a35a);
  --_dock-border: var(--qhr-border-subtle, rgba(255, 255, 255, 0.08));
  --_dock-active-bg: color-mix(in srgb, var(--_dock-fg-active) 12%, transparent);
  --_dock-min-height: 3.75rem;

  display: flex;
  align-items: center;
  justify-content: space-around;
  position: fixed;
  inset-inline: 0;
  inset-block-end: 0;
  min-block-size: var(--_dock-min-height);
  background-color: var(--_dock-bg);
  border-block-start: 1px solid var(--_dock-border);
  padding-inline: var(--qhr-space-2, 8px);
  padding-block-start: var(--qhr-space-1, 4px);
  padding-block-end: max(var(--qhr-space-1, 4px), env(safe-area-inset-bottom, 8px));
  z-index: 1000;
  box-sizing: border-box;
  font-family: var(--qhr-font-family-primary, 'Cairo', sans-serif);
}

/* ==========================================================================
   2. Dock Navigation Items
   ========================================================================== */

.qhr-dock-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 3px;
  flex: 1;
  max-inline-size: 5rem;
  padding-block: var(--qhr-space-1, 4px);
  padding-inline: var(--qhr-space-1, 4px);
  border-radius: var(--qhr-radius-sm, 6px);
  color: var(--_dock-fg);
  text-decoration: none;
  background: transparent;
  border: none;
  cursor: pointer;
  position: relative;
  transition: color var(--qhr-duration-fast, 150ms) ease,
              transform var(--qhr-duration-fast, 150ms) ease;
}

.qhr-dock-item:hover {
  color: var(--qhr-content-primary, #ffffff);
}

.qhr-dock-item.is-active,
.qhr-dock-item[aria-current="page"] {
  color: var(--_dock-fg-active);
  font-weight: 600;
}

.qhr-dock-icon-wrap {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  inline-size: 1.5rem;
  block-size: 1.5rem;
}

.qhr-dock-icon {
  inline-size: 1.35rem;
  block-size: 1.35rem;
  stroke-width: 2;
  transition: transform var(--qhr-duration-fast, 150ms) ease;
}

.qhr-dock-item.is-active .qhr-dock-icon {
  transform: scale(1.1);
}

.qhr-dock-label {
  font-size: var(--qhr-text-xs, 0.72rem);
  line-height: 1.2;
  white-space: nowrap;
}

/* Dock Item Badge */
.qhr-dock-badge {
  position: absolute;
  inset-block-start: -4px;
  inset-inline-end: -8px;
  min-inline-size: 1rem;
  block-size: 1rem;
  padding-inline: 3px;
  border-radius: 9999px;
  background-color: var(--qhr-color-danger-500, #ef4444);
  color: #ffffff;
  font-size: 0.625rem;
  font-weight: 700;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 0 0 2px var(--_dock-bg);
}

/* ==========================================================================
   3. Active Pill & Glow Indicator
   ========================================================================== */

.qhr-dock--indicator .qhr-dock-item.is-active::after {
  content: '';
  position: absolute;
  inset-block-start: -1px;
  inline-size: 24px;
  block-size: 3px;
  border-radius: 9999px;
  background-color: var(--_dock-fg-active);
  box-shadow: 0 2px 8px color-mix(in srgb, var(--_dock-fg-active) 60%, transparent);
}

/* ==========================================================================
   4. Floating Dock Capsule Pattern
   ========================================================================== */

.qhr-dock--floating {
  inset-inline: auto;
  inset-inline-start: 50%;
  transform: translateX(-50%);
  inset-block-end: var(--qhr-space-4, 16px);
  inline-size: min(92vw, 440px);
  border-radius: var(--qhr-radius-full, 9999px);
  border: 1px solid var(--_dock-border);
  box-shadow: 0 15px 35px rgba(0, 0, 0, 0.35);
  padding-block-end: var(--qhr-space-1, 4px);
}

[dir="rtl"] .qhr-dock--floating {
  transform: translateX(50%);
}

/* ==========================================================================
   5. Glassmorphic Surface
   ========================================================================== */

.qhr-dock--glass {
  background-color: color-mix(in srgb, var(--_dock-bg) 75%, transparent);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
}

/* ==========================================================================
   6. Center Action Button (FAB in Dock)
   ========================================================================== */

.qhr-dock-fab {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  inline-size: 3.25rem;
  block-size: 3.25rem;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--qhr-color-primary-400, #e6ca85), var(--qhr-color-primary-600, #a8853b));
  color: #0d1520;
  border: none;
  box-shadow: 0 4px 14px color-mix(in srgb, var(--_dock-fg-active) 40%, transparent);
  cursor: pointer;
  margin-block-start: -1rem;
  flex-shrink: 0;
  transition: transform var(--qhr-duration-fast, 150ms) ease;
}

.qhr-dock-fab:hover {
  transform: scale(1.08) translateY(-2px);
}

/* ==========================================================================
   7. Luxury Gold Variant
   ========================================================================== */

.qhr-dock--luxury-gold {
  border-block-start: 2px solid var(--qhr-color-primary-500, #c7a35a);
}

/* ==========================================================================
   8. Sizes
   ========================================================================== */

.qhr-dock--sm {
  --_dock-min-height: 3.25rem;
}
.qhr-dock--sm .qhr-dock-icon {
  inline-size: 1.15rem;
  block-size: 1.15rem;
}
.qhr-dock--sm .qhr-dock-label {
  font-size: 0.65rem;
}

.qhr-dock--lg {
  --_dock-min-height: 4.25rem;
}
.qhr-dock--lg .qhr-dock-icon {
  inline-size: 1.5rem;
  block-size: 1.5rem;
}
.qhr-dock--lg .qhr-dock-label {
  font-size: 0.8rem;
}