/* ==========================================================================
   BIVAK - Motion Layer
   Spring-based motion system (pendekatan Framer Motion, tanpa React)
   + Interactive 3D & Shader Animation (pendekatan 21st.dev)
   Dimuat SETELAH styles.css. Tidak mengubah token desain yang sudah ada.
   ========================================================================== */

:root {
  --m-ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --m-ease-soft: cubic-bezier(0.32, 0.72, 0, 1);
}

/* --------------------------------------------------------------------------
   1. Reveal on scroll — initial state hanya aktif jika JS hidup,
      supaya konten tetap terbaca kalau JS gagal / SEO crawler.
   -------------------------------------------------------------------------- */
html.m-js [data-m-reveal]:not(.m-revealed) {
  opacity: 0;
  will-change: transform, opacity;
}

/* --------------------------------------------------------------------------
   2. Scroll progress bar
   -------------------------------------------------------------------------- */
.m-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 2px;
  width: 100%;
  z-index: 2000;
  transform-origin: 0 50%;
  transform: scaleX(0);
  background: linear-gradient(90deg, var(--primary-emerald), var(--accent-sky), var(--accent-amber));
  pointer-events: none;
}

/* --------------------------------------------------------------------------
   3. Navbar condense saat scroll
   -------------------------------------------------------------------------- */
.navbar {
  transition: background-color 0.4s var(--m-ease-soft),
              backdrop-filter 0.4s var(--m-ease-soft),
              border-color 0.4s var(--m-ease-soft),
              box-shadow 0.4s var(--m-ease-soft);
}

.navbar.m-scrolled {
  background: rgba(7, 12, 11, 0.82);
  backdrop-filter: blur(18px) saturate(140%);
  -webkit-backdrop-filter: blur(18px) saturate(140%);
  border-bottom-color: rgba(16, 185, 129, 0.18);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.45);
}

/* --------------------------------------------------------------------------
   4. Shader Animation — canvas hero background
   -------------------------------------------------------------------------- */
.hero {
  isolation: isolate;
}

.m-shader-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
  z-index: 0;
  opacity: 0;
  transition: opacity 1.2s var(--m-ease-out);
  pointer-events: none;
}

.m-shader-canvas.m-shader-ready {
  opacity: 1;
}

/* Fallback animated gradient bila WebGL tidak tersedia */
.m-shader-fallback {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background:
    radial-gradient(60% 70% at 20% 30%, rgba(16, 185, 129, 0.22), transparent 60%),
    radial-gradient(50% 60% at 80% 25%, rgba(6, 182, 212, 0.18), transparent 60%),
    radial-gradient(70% 60% at 50% 90%, rgba(245, 158, 11, 0.12), transparent 65%);
  animation: m-aurora-drift 18s ease-in-out infinite alternate;
}

@keyframes m-aurora-drift {
  0%   { transform: translate3d(-2%, 0, 0) scale(1.05); }
  100% { transform: translate3d(2%, -2%, 0) scale(1.12); }
}

/* Pastikan konten hero tetap di atas canvas */
.hero-overlay { z-index: 1; }
.hero-content { position: relative; z-index: 2; }

/* --------------------------------------------------------------------------
   5. Interactive 3D tilt card
   -------------------------------------------------------------------------- */
.m-tilt {
  transform-style: preserve-3d;
  will-change: transform;
}

/* Matikan hover translateY bawaan saat tilt aktif agar tidak bertabrakan */
html.m-js .vendor-card.m-tilt:hover,
html.m-js .auction-card.m-tilt:hover {
  transform: none;
}

.m-tilt-inner {
  transform-style: preserve-3d;
  will-change: transform;
}

.m-glare {
  position: absolute;
  inset: 0;
  border-radius: inherit;
  pointer-events: none;
  opacity: 0;
  z-index: 3;
  mix-blend-mode: soft-light;
  background: radial-gradient(
    circle at var(--mx, 50%) var(--my, 50%),
    rgba(255, 255, 255, 0.5),
    rgba(255, 255, 255, 0) 55%
  );
  transition: opacity 0.35s var(--m-ease-out);
}

.m-tilt:hover .m-glare { opacity: 0.55; }

/* Garis tepi yang menyala mengikuti kursor */
.m-spotlight-border {
  position: absolute;
  inset: 0;
  border-radius: inherit;
  pointer-events: none;
  z-index: 2;
  opacity: 0;
  padding: 1px;
  background: radial-gradient(
    240px circle at var(--mx, 50%) var(--my, 50%),
    rgba(16, 185, 129, 0.65),
    transparent 65%
  );
  -webkit-mask:
    linear-gradient(#000 0 0) content-box,
    linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
  mask:
    linear-gradient(#000 0 0) content-box,
    linear-gradient(#000 0 0);
  mask-composite: exclude;
  transition: opacity 0.35s var(--m-ease-out);
}

.m-tilt:hover .m-spotlight-border { opacity: 1; }

/* --------------------------------------------------------------------------
   6. Magnetic button + press feedback
   -------------------------------------------------------------------------- */
.btn {
  position: relative;
  overflow: hidden;
  will-change: transform;
}

.m-ripple {
  position: absolute;
  border-radius: 50%;
  transform: scale(0);
  background: rgba(255, 255, 255, 0.35);
  pointer-events: none;
  z-index: 0;
}

.btn > * { position: relative; z-index: 1; }

/* --------------------------------------------------------------------------
   7. Modal — spring transition
   -------------------------------------------------------------------------- */
html.m-js .modal-overlay {
  transition: opacity 0.28s var(--m-ease-soft);
}

html.m-js .modal-overlay.m-anim-open {
  display: flex;
}

/* --------------------------------------------------------------------------
   8. Skeleton shimmer untuk grid saat filtering
   -------------------------------------------------------------------------- */
.m-skeleton {
  position: relative;
  overflow: hidden;
  background: var(--bg-card);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  min-height: 380px;
}

.m-skeleton::after {
  content: "";
  position: absolute;
  inset: 0;
  transform: translateX(-100%);
  background: linear-gradient(
    90deg,
    transparent,
    rgba(255, 255, 255, 0.05),
    transparent
  );
  animation: m-shimmer 1.4s infinite;
}

@keyframes m-shimmer {
  100% { transform: translateX(100%); }
}

/* --------------------------------------------------------------------------
   9. Live indicator untuk lelang (detak halus, bukan blink kasar)
   -------------------------------------------------------------------------- */
.m-live-dot {
  display: inline-block;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--accent-rose);
  margin-right: 0.4rem;
  vertical-align: middle;
  box-shadow: 0 0 0 0 rgba(244, 63, 94, 0.7);
  animation: m-pulse 2.4s var(--m-ease-out) infinite;
}

@keyframes m-pulse {
  0%   { box-shadow: 0 0 0 0 rgba(244, 63, 94, 0.55); }
  70%  { box-shadow: 0 0 0 9px rgba(244, 63, 94, 0); }
  100% { box-shadow: 0 0 0 0 rgba(244, 63, 94, 0); }
}

/* --------------------------------------------------------------------------
   10. Aksesibilitas — focus ring yang jelas (UI/UX polish)
   -------------------------------------------------------------------------- */
.btn:focus-visible,
.form-control:focus-visible,
.nav-link:focus-visible,
.tab-btn:focus-visible,
.modal-close:focus-visible {
  outline: 2px solid var(--primary-emerald);
  outline-offset: 2px;
}

/* --------------------------------------------------------------------------
   11. Reduced motion — wajib. Semua gerakan dimatikan.
   -------------------------------------------------------------------------- */
@media (prefers-reduced-motion: reduce) {
  html.m-js [data-m-reveal] {
    opacity: 1 !important;
    transform: none !important;
  }

  .m-shader-canvas,
  .m-shader-fallback,
  .m-glare,
  .m-spotlight-border,
  .m-progress {
    animation: none !important;
    transition: none !important;
  }

  .m-shader-fallback { animation: none !important; }
  .m-live-dot { animation: none !important; }
  .m-skeleton::after { animation: none !important; }

  html { scroll-behavior: auto; }
}