/* ── SVG Filters (defined in HTML, styled here) ─── */

/* ── Glass Card ─────────────────────────────────── */
.glass-card {
  position: relative;
  background: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur)) saturate(var(--glass-saturation));
  -webkit-backdrop-filter: blur(var(--glass-blur)) saturate(var(--glass-saturation));
  border: 1px solid var(--glass-border);
  border-radius: var(--glass-radius);
  padding: var(--sp-8);
  transition: all var(--dur-base) var(--ease-out);
  overflow: hidden;
  contain: layout paint;
}

.glass-card::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: linear-gradient(
    135deg,
    var(--glass-highlight) 0%,
    transparent 50%
  );
  pointer-events: none;
  opacity: 0.5;
}

.glass-card:hover {
  background: var(--glass-bg-hover);
  border-color: var(--glass-border-hover);
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

/* ── Glass Card with tilt (JS-driven) ───────────── */
.glass-card-tilt {
  transform-style: preserve-3d;
  perspective: 1000px;
}

.glass-card-tilt .card-content {
  transform: translateZ(30px);
}

/* ── Glass Panel (larger surfaces) ──────────────── */
.glass-panel {
  background: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur)) saturate(var(--glass-saturation));
  -webkit-backdrop-filter: blur(var(--glass-blur)) saturate(var(--glass-saturation));
  border: 1px solid var(--glass-border);
  border-radius: var(--glass-radius);
  overflow: hidden;
}

/* ── Glass Nav ──────────────────────────────────── */
.glass-nav {
  background: rgba(12, 10, 9, 0.6);
  backdrop-filter: blur(24px) saturate(1.6);
  -webkit-backdrop-filter: blur(24px) saturate(1.6);
  border-bottom: 1px solid var(--glass-border);
  transition: background var(--dur-base) var(--ease-out),
              border-color var(--dur-base) var(--ease-out);
}

.glass-nav.scrolled {
  background: rgba(12, 10, 9, 0.88);
  border-color: var(--glass-border-hover);
}

[data-theme="light"] .glass-nav {
  background: rgba(253, 248, 243, 0.7);
}
[data-theme="light"] .glass-nav.scrolled {
  background: rgba(253, 248, 243, 0.88);
}

/* ── Glass Button ───────────────────────────────── */
.glass-btn {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  padding: var(--sp-3) var(--sp-6);
  background: var(--glass-bg);
  backdrop-filter: blur(12px) saturate(1.4);
  -webkit-backdrop-filter: blur(12px) saturate(1.4);
  border: 1px solid var(--glass-border);
  border-radius: var(--glass-radius-full);
  color: var(--text-primary);
  font-weight: 500;
  font-size: var(--fs-body-sm);
  transition: all var(--dur-base) var(--ease-out);
  cursor: pointer;
  min-height: 44px;
}

.glass-btn:hover {
  background: var(--glass-bg-hover);
  border-color: var(--glass-border-hover);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

/* ── Primary CTA Button ────────────────────────── */
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  padding: var(--sp-3) var(--sp-8);
  background: var(--accent);
  border: none;
  border-radius: var(--glass-radius-full);
  color: #fff;
  font-weight: 600;
  font-size: var(--fs-body);
  transition: all var(--dur-base) var(--ease-out);
  cursor: pointer;
  min-height: 48px;
  position: relative;
  overflow: hidden;
}

.btn-primary::before {
  content: '';
  position: absolute;
  top: 0; left: -100%;
  width: 200%; height: 100%;
  background: linear-gradient(
    90deg,
    transparent 0%,
    rgba(255,255,255,0.15) 50%,
    transparent 100%
  );
  transition: left 0.6s var(--ease-out);
}

.btn-primary:hover {
  background: var(--accent-hover);
  transform: translateY(-2px);
  box-shadow: var(--shadow-glow);
}

.btn-primary:hover::before {
  left: 100%;
}

.btn-primary:active {
  transform: scale(0.98);
  box-shadow: none;
}

/* ── Glass Badge ────────────────────────────────── */
.glass-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  padding: var(--sp-1) var(--sp-4);
  background: var(--accent-subtle);
  border: 1px solid rgba(212, 168, 83, 0.2);
  border-radius: var(--glass-radius-full);
  font-size: var(--fs-caption);
  font-weight: 600;
  color: var(--accent);
  letter-spacing: var(--ls-wide);
  text-transform: uppercase;
}

.glass-badge .pulse-dot {
  width: 6px; height: 6px;
  background: var(--accent);
  border-radius: 50%;
  animation: pulse-dot 2s ease-in-out infinite;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(0.7); }
}

/* ── Cursor Glow ────────────────────────────────── */
.cursor-glow {
  position: fixed;
  width: 300px;
  height: 300px;
  border-radius: 50%;
  background: radial-gradient(circle, var(--cursor-glow-color) 0%, transparent 70%);
  pointer-events: none;
  z-index: 0;
  transform: translate(-50%, -50%);
  opacity: 0;
  transition: opacity 0.4s ease;
  mix-blend-mode: var(--cursor-glow-blend, screen);
}

.cursor-glow.active { opacity: 1; }

/* ── Glass Divider ──────────────────────────────── */
.glass-divider {
  width: 100%;
  height: 1px;
  background: linear-gradient(
    90deg,
    transparent 0%,
    var(--glass-border) 50%,
    transparent 100%
  );
  margin: var(--sp-4) 0;
}

/* ── Fallback for no backdrop-filter ────────────── */
@supports not (backdrop-filter: blur(1px)) {
  .glass-card,
  .glass-panel,
  .glass-nav,
  .glass-btn {
    background: rgba(28, 25, 23, 0.88);
  }
}