/* =============================================================================
   Global Base Styles - Apple Liquid Glass Aesthetic
   ============================================================================= */

html {
  scroll-behavior: smooth;
  overflow-x: hidden;
  -webkit-text-size-adjust: 100%;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
}

body {
  font-family: var(--ff-body);
  font-size: 1.0625rem;
  line-height: 1.6;
  color: var(--c-text);
  background-color: var(--c-base);
  min-height: 100vh;
  width: 100%;
  overflow-x: hidden;

  /* Ambient gradient background - subtle warmth */
  background-image:
    radial-gradient(ellipse 80% 50% at 20% -10%, rgba(254, 215, 170, 0.25) 0%, transparent 50%),
    radial-gradient(ellipse 60% 40% at 85% 110%, rgba(194, 65, 12, 0.08) 0%, transparent 50%);
  background-attachment: fixed;
}

/* App Shell Mode - Locks viewport for App pages to prevent rubber-banding and enable native-like scrolling */
body:has(#app) {
  height: 100%;
  overflow: hidden;
  position: fixed;
  width: 100%;
}


/* =============================================================================
   Glass Card Base Class
   ============================================================================= */

.glass {
  background: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  border: 1px solid var(--glass-border);
  box-shadow: var(--shadow-card), var(--shadow-inner-light);
}

.glass-subtle {
  background: var(--glass-bg-subtle);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  border: 1px solid var(--glass-border-subtle);
  box-shadow: var(--shadow-raised), var(--shadow-inner-light-subtle);
}

.glass-strong {
  background: var(--glass-bg-strong);
  backdrop-filter: blur(var(--glass-blur-heavy));
  -webkit-backdrop-filter: blur(var(--glass-blur-heavy));
  border: 1px solid var(--glass-border);
  box-shadow: var(--shadow-card), var(--shadow-inner-light);
}

.glass-warm {
  background: var(--glass-warm);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  border: 1px solid var(--glass-warm-border);
  box-shadow: var(--shadow-card), var(--shadow-glow-accent);
}

/* Fallback for browsers without backdrop-filter */
@supports not (backdrop-filter: blur(20px)) {
  .glass,
  .glass-subtle,
  .glass-strong {
    background: rgba(255, 255, 255, 0.95);
  }
  .glass-warm {
    background: rgba(254, 243, 199, 0.95);
  }
}

/* =============================================================================
   Interactive Glass States
   ============================================================================= */

.glass-interactive {
  transition:
    transform var(--duration-fast) var(--ease-spring),
    box-shadow var(--duration-fast) var(--ease-smooth),
    border-color var(--duration-fast) var(--ease-smooth);
}

.glass-interactive:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-floating), var(--shadow-inner-light);
}

.glass-interactive:active {
  transform: translateY(0) scale(0.98);
  transition-duration: var(--duration-micro);
}

/* =============================================================================
   Focus States - Warm Glow Ring
   ============================================================================= */

:focus-visible {
  outline: none;
  box-shadow:
    0 0 0 3px var(--c-base),
    0 0 0 5px var(--c-accent);
}

/* For elements that already have box-shadow */
.glass:focus-visible,
.glass-interactive:focus-visible {
  box-shadow:
    var(--shadow-card),
    var(--shadow-inner-light),
    0 0 0 3px var(--c-base),
    0 0 0 5px var(--c-accent);
}

/* =============================================================================
   Reduced Motion Support
   ============================================================================= */

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* =============================================================================
   Selection Styling
   ============================================================================= */

::selection {
  background: var(--c-accent-light);
  color: var(--c-text);
}

/* =============================================================================
   Smooth Scrollbar (Webkit)
   ============================================================================= */

::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  background: var(--c-border);
  border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--c-text-soft);
}