/* ============================================================
   GLASSMORPHISM.CSS — Frosted Glass Effect System
   ============================================================ */

/* ── Core Glass Panel ── */
.glass-panel,
.glass-panel-light,
.glass-panel-heavy {
  background: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur)) saturate(var(--glass-saturate));
  -webkit-backdrop-filter: blur(var(--glass-blur)) saturate(var(--glass-saturate));
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  transition: all var(--transition-base);
  position: relative;
}

.glass-panel-light {
  background: var(--glass-bg-light);
  backdrop-filter: blur(var(--glass-blur-light)) saturate(var(--glass-saturate));
  -webkit-backdrop-filter: blur(var(--glass-blur-light)) saturate(var(--glass-saturate));
}

.glass-panel-heavy {
  background: var(--glass-bg-heavy);
  backdrop-filter: blur(var(--glass-blur-heavy)) saturate(var(--glass-saturate));
  -webkit-backdrop-filter: blur(var(--glass-blur-heavy)) saturate(var(--glass-saturate));
}

/* ── Glass Hover Lift ── */
.glass-panel:hover,
.glass-panel-light:hover,
.glass-panel-heavy:hover {
  border-color: var(--glass-border-hover);
  box-shadow:
    0 8px 40px rgba(0, 0, 0, 0.2),
    0 0 30px rgba(77, 166, 255, 0.08),
    inset 0 1px 0 rgba(255, 255, 255, 0.05);
}

/* ── Glass Inner Shine ── */
.glass-shine {
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: linear-gradient(
    135deg,
    rgba(255, 255, 255, 0.15) 0%,
    rgba(255, 255, 255, 0.02) 40%,
    transparent 60%
  );
  pointer-events: none;
  z-index: 2;
}

/* ── Glass Card Base ── */
.card-glass {
  position: absolute;
  inset: 0;
  border-radius: var(--radius-md);
  background: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur)) saturate(var(--glass-saturate));
  -webkit-backdrop-filter: blur(var(--glass-blur)) saturate(var(--glass-saturate));
  border: 1px solid var(--glass-border);
  z-index: 1;
  transition: all var(--transition-base);
}

/* ── Gradient Glass Borders ── */
.glass-border-gradient {
  position: relative;
  background: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur)) saturate(var(--glass-saturate));
  -webkit-backdrop-filter: blur(var(--glass-blur)) saturate(var(--glass-saturate));
  border-radius: var(--radius-md);
}

.glass-border-gradient::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  padding: 1px;
  background: var(--grad-aero);
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  pointer-events: none;
}

/* ── Spotlight Glass (mouse-follow highlight) ── */
.spotlight-glass {
  position: relative;
  overflow: hidden;
}

.spotlight-glass::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: radial-gradient(
    600px circle at var(--mouse-x, 50%) var(--mouse-y, 50%),
    rgba(255, 255, 255, 0.06),
    transparent 50%
  );
  pointer-events: none;
  z-index: 5;
}

/* ── Reflection Strip ── */
.glass-reflection {
  position: absolute;
  top: 0; left: 10%; right: 10%;
  height: 1px;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(255,255,255,0.3),
    transparent
  );
  z-index: 3;
  pointer-events: none;
}