*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --accent: #d44000;
  --mid:    rgba(255,255,255,.5);
  --font:   'Inter', -apple-system, sans-serif;
  --bar-h:  52px;   /* header height */
  --cat-h:  48px;   /* category bar height */
}

html {
  scroll-behavior: smooth;
}

html, body {
  width: 100%;
  background: #080808; color: #fff;
  font-family: var(--font);
}

#c { position: fixed; inset: 0; z-index: 0; display: block; }

/* ── HUD ─────────────────────────────────────────────────────────────────── */
.hud {
  position: fixed; top: 0; left: 0; right: 0; z-index: 30;
  display: flex; align-items: center; justify-content: space-between;
  height: var(--bar-h);
  padding: 0 2.5rem;
  background: rgba(8,8,8,.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255,255,255,.06);
}
.hud-logo {
  display: inline-flex; align-items: center; gap: 9px;
  font-size: 1.1rem; font-weight: 700; letter-spacing: -.02em;
  color: #fff; text-decoration: none;
}
.hud-dot {
  width: 9px; height: 9px; border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 7px rgba(212,64,0,.8), 0 0 16px rgba(212,64,0,.3);
}
.hud-tag {
  font-size: .7rem; font-weight: 700; letter-spacing: .1em; text-transform: uppercase;
  color: var(--accent); border: 1px solid rgba(212,64,0,.4);
  padding: 3px 10px; border-radius: 999px;
}
.hud-back {
  font-size: .7rem; font-weight: 600; letter-spacing: .04em;
  color: rgba(255,255,255,.4); text-decoration: none;
  transition: color .2s;
}
.hud-back:hover { color: #fff; }

/* ── Category bar (horizontal) ─────────────────────────────────────────── */
.sidebar {
  position: fixed;
  top: var(--bar-h); left: 0; right: 0;
  z-index: 25;
  height: var(--cat-h);
  background: rgba(8,8,8,.8);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255,255,255,.06);
  display: flex; align-items: center;
  overflow: hidden;
}
.sidebar-header { display: none; }
.sidebar-list {
  display: flex; align-items: center;
  gap: .4rem;
  padding: 0 2rem;
  overflow-x: auto;
  scrollbar-width: none;
  -webkit-overflow-scrolling: touch;
  white-space: nowrap;
}
.sidebar-list::-webkit-scrollbar { display: none; }

.sidebar-item {
  font-family: var(--font);
  font-size: .7rem; font-weight: 600; letter-spacing: .03em;
  padding: .4rem .85rem; border-radius: 999px;
  border: 1px solid rgba(255,255,255,.1);
  border-left: none;
  background: transparent;
  color: rgba(255,255,255,.5);
  cursor: pointer; text-align: center;
  white-space: nowrap;
  transition: color .2s, background .2s, border-color .2s;
}
.sidebar-item:hover:not(.active) {
  color: rgba(255,255,255,.8);
  background: rgba(255,255,255,.06);
  border-color: rgba(255,255,255,.15);
}
.sidebar-item.active {
  color: #fff;
  background: var(--accent);
  border-color: var(--accent);
}

/* ── Vertical slide track ──────────────────────────────────────────────── */
.slides-wrap {
  position: relative;
  z-index: 10;
  padding-top: calc(var(--bar-h) + var(--cat-h) + 2rem);
  padding-bottom: 4rem;
}
.slides-track {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

/* ── Individual slide ────────────────────────────────────────────────────── */
.slide {
  width: 100%;
  display: flex; align-items: center; justify-content: center;
  padding: 3rem 6vw;
}
.slide-inner {
  display: grid;
  grid-template-columns: 56% 1fr;
  align-items: center;
  gap: 5vw;
  width: 100%; max-width: 1280px;
}

/* ── Screenshot ──────────────────────────────────────────────────────────── */
.slide-img-wrap {
  width: 100%;
  border-radius: 10px;
  overflow: hidden;
  -webkit-mask-image:
    linear-gradient(to right,  transparent 0%, black 1.25%, black 98.75%, transparent 100%),
    linear-gradient(to bottom, transparent 0%, black 1.25%, black 98.75%, transparent 100%);
  -webkit-mask-composite: source-in;
  mask-image:
    linear-gradient(to right,  transparent 0%, black 1.25%, black 98.75%, transparent 100%),
    linear-gradient(to bottom, transparent 0%, black 1.25%, black 98.75%, transparent 100%);
  mask-composite: intersect;
}
.slide-img {
  width: 100%; height: auto;
  display: block;
  object-position: top;
}

/* ── Text side ───────────────────────────────────────────────────────────── */
.slide-info { display: flex; flex-direction: column; gap: 1.4rem; }

.slide-info > * {
  opacity: 0; transform: translateY(20px);
  transition: opacity .55s ease, transform .55s ease;
}
.slide.active .slide-tags  { opacity: 1; transform: none; transition-delay: .1s; }
.slide.active .slide-title { opacity: 1; transform: none; transition-delay: .2s; }
.slide.active .slide-desc  { opacity: 1; transform: none; transition-delay: .3s; }
.slide.active .slide-price { opacity: 1; transform: none; transition-delay: .38s; }
.slide.active .slide-btn   { opacity: 1; transform: none; transition-delay: .46s; }

/* Tags */
.slide-tags { display: flex; gap: .5rem; flex-wrap: wrap; }
.tag {
  font-size: .6rem; font-weight: 700; letter-spacing: .1em; text-transform: uppercase;
  color: var(--accent);
  background: rgba(255,255,255,.03);
  border: 1px solid rgba(255,255,255,.12);
  padding: 5px 12px; border-radius: 5px;
}

/* Title */
.slide-title {
  font-size: clamp(2rem, 4vw, 3.2rem);
  font-weight: 700; letter-spacing: -.04em; line-height: 1.05;
}

/* Description */
.slide-desc {
  font-size: clamp(.88rem, 1.1vw, 1rem);
  color: var(--mid); line-height: 1.8; max-width: 36ch;
}

/* Price */
.slide-price {
  display: flex;
  flex-direction: column;
  gap: .3rem;
  padding-top: 1.1rem;
  border-top: 1px solid rgba(255,255,255,.08);
}
.slide-price-label {
  font-size: .6rem; font-weight: 600; letter-spacing: .1em; text-transform: uppercase;
  color: rgba(255,255,255,.3);
}
.slide-price-value {
  font-size: 2rem; font-weight: 700; letter-spacing: -.04em; line-height: 1;
  color: var(--accent);
}

/* CTA */
.slide-btn {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: .88rem; font-weight: 700;
  color: var(--accent); text-decoration: none;
  background: rgba(255,255,255,.04);
  border: 1px solid rgba(212,64,0,.35);
  padding: 14px 30px; border-radius: 8px;
  align-self: flex-start;
  transition: background .15s, border-color .15s, color .15s, gap .15s, box-shadow .15s, opacity .55s ease, transform .55s ease;
}
.slide.active .slide-btn {
  transition-delay: 0s, 0s, 0s, 0s, 0s, .4s, .4s;
}
.slide-btn:hover {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
  gap: 14px;
  box-shadow: 0 0 24px rgba(212,64,0,.5), 0 0 8px rgba(212,64,0,.3);
  transition-delay: 0s;
}

/* ── Mobile ──────────────────────────────────────────────────────────────── */
@media (max-width: 768px) {
  .hud { padding: 0 1.25rem; }
  .hud-back { display: none; }

  .sidebar-list { padding: 0 1rem; gap: .35rem; }
  .sidebar-item { font-size: .65rem; padding: .35rem .7rem; }

  .slides-wrap { padding-top: calc(var(--bar-h) + var(--cat-h) + 1rem); }
  .slides-track { gap: 1rem; }

  .slide { padding: 2rem 5vw; }
  .slide-inner {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

  .slide-btn {
    align-self: stretch;
    justify-content: center;
    padding: 16px 24px;
  }
}

/* ── Reduced motion ──────────────────────────────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .slide-info > * {
    opacity: 1; transform: none;
    transition: none;
  }
}