/* ============================================================
   glass.css — Apple-style glassmorphism system
   ============================================================ */

/* --- Base Glass Card --- */
.glass-card {
  background: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  border: 1px solid var(--glass-border);
  border-radius: var(--r-lg);
  position: relative;
  overflow: hidden;
  transition:
    background 0.4s var(--ease-out-expo),
    border-color 0.4s var(--ease-out-expo),
    transform 0.5s var(--ease-out-expo),
    box-shadow 0.5s var(--ease-out-expo);
}

.glass-card:hover {
  background: var(--glass-hover-bg);
  border-color: var(--glass-hover-bd);
  transform: translateY(-3px);
  box-shadow:
    0 16px 48px rgba(0,0,0,0.35),
    0 0 0 1px rgba(255,255,255,0.05) inset,
    0 1px 0 rgba(255,255,255,0.08) inset;
}

/* --- Inner shine (top edge highlight) --- */
.glass-card::before {
  content: '';
  position: absolute; top: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(
    90deg,
    transparent 0%,
    rgba(255,255,255,0.1) 30%,
    rgba(255,255,255,0.15) 50%,
    rgba(255,255,255,0.1) 70%,
    transparent 100%
  );
  z-index: 2;
  pointer-events: none;
}

/* --- Depth layer: subtle inner shadow --- */
.glass-card::after {
  content: '';
  position: absolute; inset: 0;
  border-radius: inherit;
  box-shadow: inset 0 -1px 1px rgba(0,0,0,0.15);
  pointer-events: none;
  z-index: 1;
}

/* --- Frosted variant (stronger blur, used for nav/modals) --- */
.glass-frosted {
  background: rgba(255,255,255,0.03);
  backdrop-filter: blur(60px);
  -webkit-backdrop-filter: blur(60px);
  border-color: rgba(255,255,255,0.06);
}

/* --- Glass with colored tint --- */
.glass-tint-blue {
  background: rgba(41, 151, 255, 0.04);
  border-color: rgba(41, 151, 255, 0.1);
}
.glass-tint-blue:hover {
  background: rgba(41, 151, 255, 0.08);
  border-color: rgba(41, 151, 255, 0.18);
}

.glass-tint-purple {
  background: rgba(191, 90, 242, 0.04);
  border-color: rgba(191, 90, 242, 0.1);
}
.glass-tint-purple:hover {
  background: rgba(191, 90, 242, 0.08);
  border-color: rgba(191, 90, 242, 0.18);
}

.glass-tint-green {
  background: rgba(48, 209, 88, 0.04);
  border-color: rgba(48, 209, 88, 0.1);
}
.glass-tint-green:hover {
  background: rgba(48, 209, 88, 0.08);
  border-color: rgba(48, 209, 88, 0.18);
}

/* --- Floating reflection effect --- */
.glass-reflect {
  position: relative;
}
.glass-reflect::before {
  content: '';
  position: absolute;
  top: -50%; left: -50%;
  width: 200%; height: 200%;
  background: conic-gradient(
    from 180deg at 50% 50%,
    transparent 0deg,
    rgba(255,255,255,0.03) 60deg,
    transparent 120deg,
    transparent 360deg
  );
  animation: reflectSpin 12s linear infinite;
  pointer-events: none;
  z-index: 0;
}
@keyframes reflectSpin {
  from { transform: rotate(0deg); }
  to   { transform: rotate(360deg); }
}

/* --- Glass Button --- */
.glass-btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 12px 28px;
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--glass-border);
  border-radius: var(--r-sm);
  color: var(--text);
  font-size: 14px; font-weight: 500;
  cursor: pointer;
  transition: all 0.3s var(--ease-out-expo);
}
.glass-btn:hover {
  background: var(--glass-hover-bg);
  border-color: var(--glass-hover-bd);
  transform: translateY(-1px);
}

/* --- Glass input --- */
.glass-input {
  width: 100%;
  padding: 14px 18px;
  background: rgba(255,255,255,0.03);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: var(--r-sm);
  color: var(--text);
  font-size: 14px;
  outline: none;
  transition: border-color 0.3s;
}
.glass-input:focus {
  border-color: var(--accent-blue);
  box-shadow: 0 0 0 3px rgba(41,151,255,0.1);
}
.glass-input::placeholder {
  color: var(--text-muted);
}