/* ---------------------------------------------------------------
   Tencubed Games — landing page
   Palette pulled from the dice mark:
     #7B5CFA top face, #5433D6 left face, #351C8F right face,
     #9B84FF near-corner cap, #2A1570 wordmark
   --------------------------------------------------------------- */

:root {
  --violet-100: #E4DDFF;
  --violet-300: #9B84FF;
  --violet-400: #7B5CFA;
  --violet-500: #5433D6;
  --violet-700: #351C8F;
  --violet-900: #2A1570;

  --ink-900: #0A0518;
  --ink-800: #0C0620;
  --ink-700: #140B2E;
  --ink-600: #1C1140;

  --text: #EDE9FB;
  --text-dim: #A79CC9;
  --line: rgba(155, 132, 255, .18);

  --radius: 14px;
  --card-w: clamp(190px, 25vw, 300px);
  --card-h: calc(var(--card-w) * 1.5);

  --ease: cubic-bezier(.22, .61, .36, 1);

  --font: "Inter", "Helvetica Neue", Helvetica, Arial, sans-serif;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background:
    radial-gradient(1400px 900px at 50% -18%,
      var(--violet-900) 0%, rgba(42, 21, 112, .55) 38%, rgba(42, 21, 112, .18) 62%, transparent 82%),
    radial-gradient(900px 600px at 110% 40%, rgba(84, 51, 214, .18) 0%, transparent 70%),
    var(--ink-800);
  background-repeat: no-repeat;
  color: var(--text);
  font-family: var(--font);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

main { flex: 1 0 auto; }

img { max-width: 100%; display: block; }

/* faint isometric grain / grid overlay */
.grain {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  opacity: .5;
  background-image:
    linear-gradient(60deg, var(--line) 1px, transparent 1px),
    linear-gradient(-60deg, var(--line) 1px, transparent 1px);
  background-size: 72px 124px, 72px 124px;
  mask-image: radial-gradient(120% 80% at 50% 0%, #000 0%, transparent 75%);
  -webkit-mask-image: radial-gradient(120% 80% at 50% 0%, #000 0%, transparent 75%);
}

/* -------------------------------- hero ------------------------- */

.hero {
  position: relative;
  z-index: 2;
  display: grid;
  place-items: center;
  padding: clamp(3.5rem, 11vw, 8rem) 1.25rem clamp(2.5rem, 6vw, 4.5rem);
}

.hero-glow {
  position: absolute;
  top: -22%;
  left: 50%;
  width: min(900px, 95vw);
  aspect-ratio: 1;
  transform: translateX(-50%);
  background: radial-gradient(circle, rgba(123, 92, 250, .30) 0%, transparent 62%);
  filter: blur(20px);
  pointer-events: none;
  animation: halo-pulse 9s ease-in-out infinite;
}

@keyframes halo-pulse {
  0%, 100% { opacity: .55; transform: translateX(-50%) scale(.88); }
  50%      { opacity: 1;   transform: translateX(-50%) scale(1.1); }
}

.hero-logo {
  position: relative;
  width: clamp(200px, 34vw, 420px);
  height: auto;
  margin-inline: auto;
  filter: drop-shadow(0 26px 60px rgba(53, 28, 143, .95))
          drop-shadow(0 0 70px rgba(123, 92, 250, .38));
}

.hero-name {
  position: relative;
  margin: 1.6rem 0 0;
  color: #FFFFFF;
  font-size: .82rem;
  font-weight: 600;
  letter-spacing: .3em;
  text-align: center;
}

/* ------------------------------ sections ----------------------- */

.section-title {
  margin: 0 0 clamp(1.6rem, 4vw, 2.6rem);
  text-align: center;
  font-size: .78rem;
  font-weight: 700;
  letter-spacing: .42em;
  text-transform: uppercase;
  color: var(--violet-300);
}

.games {
  position: relative;
  z-index: 2;
  padding: clamp(2rem, 6vw, 4rem) 0 clamp(3rem, 7vw, 5rem);
}

/* ------------------------------ carousel ----------------------- */

.carousel {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.stage {
  position: relative;
  width: 100%;
  height: calc(var(--card-h) + 40px);
  perspective: 1400px;
  transform-style: preserve-3d;
  touch-action: pan-y;
  cursor: grab;
  user-select: none;
}

.stage.dragging { cursor: grabbing; }

.slide {
  position: absolute;
  top: 50%;
  left: 50%;
  width: var(--card-w);
  height: var(--card-h);
  margin: calc(var(--card-h) / -2) 0 0 calc(var(--card-w) / -2);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--ink-700);
  border: 1px solid var(--line);
  box-shadow: 0 30px 60px -22px rgba(0, 0, 0, .85);
  transition: transform .6s var(--ease), opacity .6s var(--ease), filter .6s var(--ease);
  will-change: transform, opacity;
  backface-visibility: hidden;
}

.slide img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.slide::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 55%, rgba(10, 5, 24, .55) 100%);
  opacity: 0;
  transition: opacity .5s var(--ease);
}

/* side cards are dimmed + pushed back */
.slide.side {
  filter: brightness(.45) saturate(.7);
  cursor: pointer;
}

.slide.side:hover { filter: brightness(.68) saturate(.85); }

.slide.active {
  box-shadow:
    0 0 0 1px rgba(155, 132, 255, .45),
    0 34px 70px -20px rgba(53, 28, 143, .95),
    0 0 90px -20px rgba(123, 92, 250, .55);
}

.slide.active::after { opacity: 1; }

.slide.hidden { opacity: 0; pointer-events: none; }

/* arrows */
.nav-arrow {
  position: absolute;
  top: calc(var(--card-h) / 2 + 20px);
  transform: translateY(-50%);
  z-index: 6;
  width: 46px;
  height: 46px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  border: 1px solid var(--line);
  background: rgba(20, 11, 46, .72);
  backdrop-filter: blur(8px);
  color: var(--violet-100);
  cursor: pointer;
  transition: background .25s, border-color .25s, transform .25s var(--ease);
}

.nav-arrow:hover {
  background: var(--violet-500);
  border-color: var(--violet-400);
  transform: translateY(-50%) scale(1.08);
}

.nav-arrow:focus-visible { outline: 2px solid var(--violet-300); outline-offset: 3px; }

.nav-arrow svg {
  width: 20px;
  height: 20px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.nav-arrow.prev { left: clamp(.6rem, 4vw, 3.5rem); }
.nav-arrow.next { right: clamp(.6rem, 4vw, 3.5rem); }

/* caption */
.caption {
  margin-top: 2rem;
  text-align: center;
  min-height: 8.5rem;
  padding: 0 1.25rem;
}

.caption-title {
  margin: 0 0 .5rem;
  font-size: clamp(1.6rem, 4.5vw, 2.6rem);
  font-weight: 800;
  letter-spacing: -.02em;
}

.caption-tag {
  margin: 0 auto .9rem;
  max-width: 46ch;
  color: var(--text-dim);
  font-size: .98rem;
  line-height: 1.55;
}

.caption-meta {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: .5rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.caption-meta li {
  padding: .3rem .8rem;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: rgba(84, 51, 214, .14);
  color: var(--violet-100);
  font-size: .7rem;
  font-weight: 600;
  letter-spacing: .12em;
  text-transform: uppercase;
}

/* fade caption during a move */
.caption.swapping .caption-title,
.caption.swapping .caption-tag,
.caption.swapping .caption-meta { opacity: 0; }

.caption-title,
.caption-tag,
.caption-meta { transition: opacity .25s ease; }

/* dots */
.dots {
  display: flex;
  gap: .6rem;
  margin-top: 1.6rem;
}

.dot {
  width: 9px;
  height: 9px;
  padding: 0;
  border: 0;
  border-radius: 50%;
  background: rgba(155, 132, 255, .28);
  cursor: pointer;
  transition: background .3s, transform .3s var(--ease), width .3s var(--ease);
}

.dot:hover { background: rgba(155, 132, 255, .6); }

.dot[aria-selected="true"] {
  width: 26px;
  border-radius: 999px;
  background: var(--violet-400);
}

.dot:focus-visible { outline: 2px solid var(--violet-300); outline-offset: 3px; }

/* ------------------------- support / privacy ------------------- */

.doc-header {
  position: relative;
  z-index: 3;
  padding: 1.6rem clamp(1.1rem, 5vw, 3.5rem);
}

.doc-brand {
  display: inline-flex;
  align-items: center;
  gap: .75rem;
  color: #FFFFFF;
  text-decoration: none;
  font-size: .78rem;
  font-weight: 600;
  letter-spacing: .22em;
}

.doc-brand img {
  width: 34px;
  height: auto;
  filter: drop-shadow(0 4px 16px rgba(123, 92, 250, .6));
  transition: transform .5s var(--ease);
}

.doc-brand:hover img { transform: rotate(-12deg) scale(1.06); }

.doc {
  position: relative;
  z-index: 2;
  max-width: 44rem;
  margin: 0 auto;
  padding: clamp(1.5rem, 5vw, 3.5rem) 1.5rem clamp(3rem, 8vw, 5rem);
}

.doc h1 {
  margin: 0 0 .6rem;
  font-size: clamp(2rem, 6vw, 3rem);
  font-weight: 800;
  letter-spacing: -.02em;
}

.doc h2 {
  margin: 2.4rem 0 .7rem;
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: .02em;
  color: var(--violet-300);
}

.doc p,
.doc li {
  color: var(--text-dim);
  font-size: .97rem;
  line-height: 1.75;
}

.doc p { margin: 0 0 1rem; }

.doc ul {
  margin: 0 0 1rem;
  padding-left: 1.2rem;
}

.doc li { margin-bottom: .45rem; }

.doc strong { color: var(--text); font-weight: 600; }

.doc-lead {
  color: var(--text) !important;
  font-size: 1.08rem !important;
  line-height: 1.7 !important;
}

.doc-meta {
  margin-bottom: 2rem !important;
  font-size: .78rem !important;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--violet-300) !important;
}

.doc-cta { margin: 1.6rem 0 2rem; }

.doc a {
  color: var(--violet-300);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.doc a:hover { color: var(--text); }

.btn {
  display: inline-block;
  padding: .85rem 1.9rem;
  border-radius: 999px;
  background: linear-gradient(140deg, var(--violet-400), var(--violet-500));
  color: #fff !important;
  text-decoration: none !important;
  font-size: .85rem;
  font-weight: 700;
  letter-spacing: .06em;
  box-shadow: 0 10px 30px -8px rgba(123, 92, 250, .75);
  transition: transform .25s var(--ease), box-shadow .25s var(--ease);
}

.btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 16px 36px -8px rgba(123, 92, 250, .9);
}

/* ------------------------------- footer ------------------------ */

.site-footer {
  position: relative;
  z-index: 2;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: .7rem 1.2rem;
  padding: 2rem 1.5rem 2.6rem;
  border-top: 1px solid var(--line);
  color: var(--text-dim);
  font-size: .78rem;
  letter-spacing: .06em;
}

.footer-mark { width: 22px; height: auto; opacity: .55; }

.footer-links {
  display: flex;
  gap: 1.2rem;
}

.footer-links a {
  color: var(--text-dim);
  text-decoration: none;
  transition: color .25s;
}

.footer-links a:hover { color: var(--violet-300); }

/* ----------------------------- responsive ---------------------- */

@media (max-width: 720px) {
  :root { --card-w: clamp(180px, 56vw, 260px); }

  .nav-arrow { width: 40px; height: 40px; }
  .nav-arrow.prev { left: .4rem; }
  .nav-arrow.next { right: .4rem; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: .01ms !important;
    transition-duration: .01ms !important;
  }
}