/* ===================================================================
   LIQUID GLASS SYSTEM
   The signature visual language of the site: translucent frosted
   panels floating over slow-moving colour blobs, with a thin
   specular highlight along the top edge to sell the "glass" read.
   =================================================================== */

/* ---------- Ambient liquid background ----------
   Three soft blurred blobs in the brand's blue / green / red, drifting
   on independent paths — a literal, slowed-down echo of the three
   leaf shapes in the Madina logo, used as the site's ambient light
   source instead of a generic purple Vision-OS glow. */

.liquid-canvas {
  position: fixed;
  inset: 0;
  z-index: -1;
  overflow: hidden;
  background:
    radial-gradient(circle at 20% 20%, var(--bg-base-3), transparent 60%),
    var(--bg-base);
}

.liquid-blob {
  position: absolute;
  width: 46vw;
  height: 46vw;
  max-width: 620px;
  max-height: 620px;
  border-radius: 50%;
  filter: blur(70px);
  opacity: 0.55;
  will-change: transform;
}

.liquid-blob--blue {
  background: radial-gradient(circle at 30% 30%, var(--brand-blue-light), var(--brand-blue) 60%, transparent 75%);
  top: -10%;
  left: -8%;
  animation: drift-a 26s var(--ease-glass) infinite alternate;
}

.liquid-blob--green {
  background: radial-gradient(circle at 30% 30%, var(--brand-green-light), var(--brand-green) 60%, transparent 75%);
  bottom: -15%;
  right: -10%;
  animation: drift-b 32s var(--ease-glass) infinite alternate;
}

.liquid-blob--red {
  width: 30vw;
  height: 30vw;
  max-width: 420px;
  max-height: 420px;
  background: radial-gradient(circle at 30% 30%, #ff6b76, var(--brand-red) 60%, transparent 75%);
  top: 35%;
  left: 38%;
  opacity: 0.35;
  animation: drift-c 22s var(--ease-glass) infinite alternate;
}

@keyframes drift-a {
  from { transform: translate(0, 0) scale(1); }
  to   { transform: translate(8vw, 10vh) scale(1.15); }
}
@keyframes drift-b {
  from { transform: translate(0, 0) scale(1.05); }
  to   { transform: translate(-9vw, -8vh) scale(0.95); }
}
@keyframes drift-c {
  from { transform: translate(-4vw, -3vh) scale(0.9); }
  to   { transform: translate(5vw, 6vh) scale(1.1); }
}

/* Grain layer keeps the gradients from looking too clean/digital */
.liquid-canvas::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.035'/%3E%3C/svg%3E");
  mix-blend-mode: overlay;
}

/* ---------- Core glass surface ---------- */

.glass {
  position: relative;
  background: var(--glass-fill);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-m);
  backdrop-filter: blur(var(--glass-blur)) saturate(160%);
  -webkit-backdrop-filter: blur(var(--glass-blur)) saturate(160%);
  box-shadow:
    0 1px 0 0 var(--glass-highlight) inset,
    0 20px 60px -20px rgba(0, 0, 0, 0.55);
}

/* thin specular line along the top-left edge — the "light hitting glass" cue */
.glass::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  padding: 1px;
  background: linear-gradient(135deg, rgba(255,255,255,0.55), rgba(255,255,255,0) 35%);
  mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  pointer-events: none;
}

.glass--strong {
  background: var(--glass-fill-strong);
  backdrop-filter: blur(var(--glass-blur-lg)) saturate(180%);
  -webkit-backdrop-filter: blur(var(--glass-blur-lg)) saturate(180%);
}

.glass--interactive {
  transition: transform var(--dur-fast) var(--ease-glass),
              border-color var(--dur-fast) var(--ease-glass),
              background var(--dur-fast) var(--ease-glass);
}

.glass--interactive:hover {
  transform: translateY(-4px);
  border-color: rgba(255, 255, 255, 0.3);
  background: var(--glass-fill-strong);
}

/* ---------- Buttons ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--sp-1);
  padding: 0.85rem 1.6rem;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: var(--fs-body);
  border-radius: var(--radius-pill);
  transition: transform var(--dur-fast) var(--ease-glass),
              box-shadow var(--dur-fast) var(--ease-glass);
}

.btn:hover {
  transform: translateY(-2px);
}

.btn--primary {
  background: linear-gradient(135deg, var(--brand-blue-light), var(--brand-blue));
  color: #fff;
  box-shadow: 0 10px 30px -8px rgba(36, 82, 232, 0.55);
}

.btn--primary:hover {
  box-shadow: 0 14px 36px -8px rgba(36, 82, 232, 0.7);
}

.btn--glass {
  background: var(--glass-fill-strong);
  border: 1px solid var(--glass-border);
  color: var(--text-on-glass);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
}

.btn--glass:hover {
  background: rgba(255, 255, 255, 0.2);
}

/* ---------- Badge / pill tag ---------- */

.pill {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.35rem 0.9rem;
  font-size: var(--fs-tiny);
  font-family: var(--font-data);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  border-radius: var(--radius-pill);
  background: var(--glass-fill-strong);
  border: 1px solid var(--glass-border);
  color: var(--text-primary);
}

.pill--accent {
  color: #06150f;
  background: var(--brand-green-light);
  border-color: transparent;
}

/* ---------- Scroll-reveal utility (toggled by js/main.js) ---------- */

.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.9s var(--ease-glass), transform 0.9s var(--ease-glass);
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}