/* ====================================================================
   LIQUID-BASE — Shared scaffolding for Liquid Glass variations 46–55.
   Each variation imports kit-base.css + this file, then overrides:
     - --liq-btn-r   (button border-radius)
     - --k-font-display / --k-font-body (typography)
     - .kit-btn background (plain vs muted theme shimmer)
   ==================================================================== */

.liq {
  --k-r-sm:   16px;
  --k-r-md:   22px;
  --k-r-lg:   28px;
  --k-r-pill: 999px;

  /* Override per-variation */
  --liq-btn-r: 999px;

  --k-font-display: 'Manrope', 'Inter', system-ui, sans-serif;

  --k-card-bg:   rgba(255, 255, 255, 0.07);
  --k-card-blur: blur(32px) saturate(170%);
  --k-border:    rgba(255, 255, 255, 0.16);
  --k-border-2:  rgba(255, 255, 255, 0.26);

  --k-shadow-sm:
    0 14px 38px -10px rgba(0, 0, 0, 0.38),
    inset 0 2px 0 rgba(255, 255, 255, 0.14),
    inset 0 -1.5px 0 rgba(0, 0, 0, 0.18);
  --k-shadow-md:
    0 50px 100px -24px rgba(0, 0, 0, 0.52),
    inset 0 2px 0 rgba(255, 255, 255, 0.18),
    inset 0 -1.5px 0 rgba(0, 0, 0, 0.22);

  font-size: 16.5px;
  line-height: 1.6;
}

[data-theme="arctic"] .liq,
[data-theme="ivory"]  .liq,
[data-theme="rose"]   .liq,
[data-theme="sage"]   .liq {
  --k-card-bg:   rgba(255, 255, 255, 0.7);
  --k-border:    rgba(255, 255, 255, 0.95);
  --k-border-2:  rgba(0, 0, 0, 0.1);
  --k-shadow-sm:
    0 14px 36px -10px rgba(0, 0, 0, 0.16),
    inset 0 2px 0 rgba(255, 255, 255, 0.95),
    inset 0 -1.5px 0 rgba(0, 0, 0, 0.06);
  --k-shadow-md:
    0 50px 100px -28px rgba(0, 0, 0, 0.22),
    inset 0 2px 0 rgba(255, 255, 255, 0.96),
    inset 0 -1.5px 0 rgba(0, 0, 0, 0.08);
}

/* Atmosphere — soft warm + cool blobs drifting */
.liq::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background:
    radial-gradient(ellipse 48% 32% at 14% 8%, rgba(var(--k-accent-rgb), 0.36) 0%, transparent 60%),
    radial-gradient(ellipse 50% 32% at 86% 88%, rgba(120, 220, 255, 0.26) 0%, transparent 60%),
    radial-gradient(ellipse 35% 24% at 80% 12%, rgba(255, 180, 220, 0.18) 0%, transparent 60%);
  filter: blur(46px);
  animation: liq-drift 18s ease-in-out infinite alternate;
}

@keyframes liq-drift {
  0%   { transform: translate(0, 0) scale(1); }
  100% { transform: translate(-1.5%, 1.5%) scale(1.04); }
}

@media (prefers-reduced-motion: reduce) {
  .liq::before { animation: none; }
}

.liq .kit-h1 {
  font-family: var(--k-font-display);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.04;
}

.liq .kit-h2 {
  font-family: var(--k-font-display);
  font-weight: 600;
  letter-spacing: -0.02em;
}

/* Cards: deep round-rect glass */
.liq .kit-card,
.liq .kit-mock,
.liq .kit-dialog,
.liq .kit-toast {
  background: var(--k-card-bg);
  backdrop-filter: var(--k-card-blur);
  -webkit-backdrop-filter: var(--k-card-blur);
  box-shadow: var(--k-shadow-sm);
  position: relative;
  overflow: hidden;
}

.liq .kit-mock { box-shadow: var(--k-shadow-md); }

/* Inner highlight curve on top */
.liq .kit-card::before,
.liq .kit-mock::before,
.liq .kit-dialog::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  border-radius: inherit;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.16) 0%, transparent 28%);
}

.liq .kit-card:hover {
  transform: translateY(-3px);
  box-shadow:
    0 30px 60px -16px rgba(var(--k-accent-rgb), 0.32),
    inset 0 2px 0 rgba(255, 255, 255, 0.22);
}

/* Buttons — common scaffold; per-variation overrides --liq-btn-r and background */
.liq .kit-btn {
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.22) 0%, rgba(255, 255, 255, 0.05) 100%),
    rgba(var(--k-accent-rgb), 0.55);
  background-blend-mode: overlay, normal;
  border: 1px solid rgba(255, 255, 255, 0.28);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  color: #fff;
  border-radius: var(--liq-btn-r);
  font-family: var(--k-font-display);
  font-weight: 600;
  letter-spacing: -0.005em;
  text-transform: none;
  padding: 0.78rem 1.5rem;
  font-size: 0.98rem;
  box-shadow:
    0 12px 28px -8px rgba(var(--k-accent-rgb), 0.55),
    inset 0 1.5px 0 rgba(255, 255, 255, 0.32),
    inset 0 -1px 0 rgba(0, 0, 0, 0.18);
  position: relative;
  overflow: hidden;
  animation: liq-breathe 4.2s ease-in-out infinite;
}

@keyframes liq-breathe {
  0%, 100% {
    box-shadow:
      0 12px 28px -8px rgba(var(--k-accent-rgb), 0.45),
      inset 0 1.5px 0 rgba(255, 255, 255, 0.3),
      inset 0 -1px 0 rgba(0, 0, 0, 0.18);
  }
  50% {
    box-shadow:
      0 18px 38px -10px rgba(var(--k-accent-rgb), 0.7),
      inset 0 1.5px 0 rgba(255, 255, 255, 0.36),
      inset 0 -1px 0 rgba(0, 0, 0, 0.18);
  }
}

@media (prefers-reduced-motion: reduce) {
  .liq .kit-btn { animation: none; }
}

.liq .kit-btn:hover { transform: translateY(-2px); }
.liq .kit-btn:active { transform: translateY(0); }

.liq .kit-btn-secondary,
.liq .kit-btn-ghost {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.22);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  color: var(--k-ink);
  animation: none;
  box-shadow:
    0 8px 22px -8px rgba(0, 0, 0, 0.32),
    inset 0 1.5px 0 rgba(255, 255, 255, 0.18);
  border-radius: var(--liq-btn-r);
}

[data-theme="arctic"] .liq .kit-btn-secondary,
[data-theme="ivory"]  .liq .kit-btn-secondary,
[data-theme="rose"]   .liq .kit-btn-secondary,
[data-theme="sage"]   .liq .kit-btn-secondary { background: rgba(255, 255, 255, 0.6); }

.liq .kit-btn-sm  { padding: 0.5rem 1.05rem; font-size: 0.86rem; border-radius: var(--liq-btn-r); }
.liq .kit-btn-lg  { padding: 0.95rem 1.85rem; font-size: 1.08rem; border-radius: var(--liq-btn-r); }

.liq .kit-tabs {
  background: var(--k-card-bg);
  backdrop-filter: var(--k-card-blur);
  -webkit-backdrop-filter: var(--k-card-blur);
  padding: 0.35rem;
  box-shadow: inset 0 1.5px 0 rgba(255, 255, 255, 0.12);
}

.liq .kit-tab { font-family: var(--k-font-display); font-weight: 600; padding: 0.55rem 1.1rem; }
.liq .kit-tab.active {
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.22), rgba(255, 255, 255, 0.05)),
    rgba(var(--k-accent-rgb), 0.55);
  background-blend-mode: overlay, normal;
  box-shadow:
    inset 0 1.5px 0 rgba(255, 255, 255, 0.32),
    0 6px 14px -4px rgba(var(--k-accent-rgb), 0.45);
  color: #fff;
}

.liq .kit-mock-opt {
  background: rgba(255, 255, 255, 0.07);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  padding: 0.7rem 0.95rem;
  border-radius: var(--k-r-sm);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.14);
}

[data-theme="arctic"] .liq .kit-mock-opt,
[data-theme="ivory"]  .liq .kit-mock-opt,
[data-theme="rose"]   .liq .kit-mock-opt,
[data-theme="sage"]   .liq .kit-mock-opt { background: rgba(255, 255, 255, 0.58); }

.liq .kit-field input,
.liq .kit-field select,
.liq .kit-field textarea {
  background: rgba(255, 255, 255, 0.06);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-radius: var(--k-r-sm);
  padding: 0.85rem 1rem;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.12);
}

[data-theme="arctic"] .liq .kit-field input,
[data-theme="ivory"]  .liq .kit-field input,
[data-theme="rose"]   .liq .kit-field input,
[data-theme="sage"]   .liq .kit-field input,
[data-theme="arctic"] .liq .kit-field select,
[data-theme="ivory"]  .liq .kit-field select,
[data-theme="rose"]   .liq .kit-field select,
[data-theme="sage"]   .liq .kit-field select,
[data-theme="arctic"] .liq .kit-field textarea,
[data-theme="ivory"]  .liq .kit-field textarea,
[data-theme="rose"]   .liq .kit-field textarea,
[data-theme="sage"]   .liq .kit-field textarea { background: rgba(255, 255, 255, 0.58); }

.liq .kit-badge {
  border-radius: var(--k-r-pill);
  padding: 0.32rem 0.85rem;
  text-transform: none;
  letter-spacing: 0;
  font-family: var(--k-font-display);
  font-weight: 600;
  font-size: 0.78rem;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.18);
}

.liq .kit-shell { padding: 2.5rem 1.5rem 5rem; }
.liq .kit-section { padding: 2.5rem 0; }
.liq .kit-hero { padding: 1.75rem 0 3rem; gap: 2.5rem; }

/* ============================================================
   Muted theme-tinted shimmer for primary CTAs.
   Variations 53, 54, 55 opt in via class .liq-shimmer.
   Aurora-style movement, but the gradient stays inside the
   theme accent's hue range — darker → lighter → darker.
   ============================================================ */

.liq.liq-shimmer .kit-btn:not(.kit-btn-secondary):not(.kit-btn-ghost):not(.kit-btn-danger):not(.kit-btn-success) {
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.18) 0%, transparent 30%, transparent 70%, rgba(0, 0, 0, 0.16) 100%),
    linear-gradient(110deg,
      color-mix(in srgb, var(--k-accent) 72%, #000) 0%,
      var(--k-accent) 28%,
      color-mix(in srgb, var(--k-accent) 78%, #fff) 50%,
      var(--k-accent) 72%,
      color-mix(in srgb, var(--k-accent) 72%, #000) 100%);
  background-size: 100% 100%, 220% 100%;
  background-blend-mode: overlay, normal;
  animation: liq-shimmer-slide 9s linear infinite, liq-breathe 4.2s ease-in-out infinite;
}

@keyframes liq-shimmer-slide {
  0%   { background-position: 0% 0%, 0% 50%; }
  100% { background-position: 0% 0%, 200% 50%; }
}

@media (prefers-reduced-motion: reduce) {
  .liq.liq-shimmer .kit-btn { animation: none; }
}

.liq.liq-shimmer .kit-tab.active {
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.22), rgba(255, 255, 255, 0.04)),
    linear-gradient(110deg,
      color-mix(in srgb, var(--k-accent) 72%, #000) 0%,
      var(--k-accent) 50%,
      color-mix(in srgb, var(--k-accent) 78%, #fff) 100%);
  background-size: 100% 100%, 200% 100%;
  animation: liq-shimmer-slide 11s linear infinite;
}

@media (prefers-reduced-motion: reduce) {
  .liq.liq-shimmer .kit-tab.active { animation: none; }
}