:root {
  --chess-ink: #050a13;
  --chess-forest: #0b1d3a;
  --chess-jade: #6b86ad;
  --chess-mint: #91a9ca;
  --chess-cream: #f6eee1;
  --chess-sand: #e2d1b4;
  --chess-amber: #edc66a;
  --chess-coral: #d6a34a;
}

@font-face {
  font-family: "Roboto Slab Bold";
  src: url("../fonts/RobotoSlab-Bold-BmHncmXg.ttf") format("truetype");
  font-display: swap;
}

@font-face {
  font-family: "Roboto Slab Regular";
  src: url("../fonts/RobotoSlab-Regular-LWgcIbCR.ttf") format("truetype");
  font-display: swap;
}

@font-face {
  font-family: "Roboto Slab Light";
  src: url("../fonts/RobotoSlab-Light-DNVuU800.ttf") format("truetype");
  font-display: swap;
}

@font-face {
  font-family: "Exo SemiBold";
  src: url("../fonts/Exo-SemiBold-COXP2BYa.ttf") format("truetype");
  font-display: swap;
}

@font-face {
  font-family: "Exo Light";
  src: url("../fonts/Exo-Light-DlxgoUhu.ttf") format("truetype");
  font-display: swap;
}

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

html,
body {
  width: 100%;
  height: 100%;
  margin: 0;
  overflow: hidden;
  overscroll-behavior: none;
  touch-action: none;
  background: var(--chess-ink) !important;
}

#zenx-chess-stage {
  position: fixed;
  inset: 0;
  display: grid;
  place-items: center;
  isolation: isolate;
  overflow: hidden;
  background:
    linear-gradient(180deg, rgba(3, 9, 20, .08), rgba(2, 6, 14, .36)),
    url("../assets/chess_game_backdrop-zenx-r12.jpg") center / cover no-repeat,
    #030811;
}

#zenx-chess-stage::before,
#zenx-chess-stage::after {
  position: absolute;
  z-index: -1;
  content: "";
  pointer-events: none;
}

#zenx-chess-stage::before {
  width: min(78vw, 980px);
  aspect-ratio: 1;
  left: -26vw;
  top: -48%;
  border: 1px solid rgba(145, 169, 202, .13);
  border-radius: 50%;
  box-shadow:
    0 0 0 92px rgba(145, 169, 202, .025),
    0 0 0 184px rgba(145, 169, 202, .02),
    0 0 120px rgba(73, 107, 155, .08);
}

#zenx-chess-stage::after {
  right: -12vw;
  bottom: -32vh;
  width: min(55vw, 760px);
  aspect-ratio: 1;
  border: 1px solid rgba(237, 198, 106, .14);
  border-radius: 50%;
  box-shadow: 0 0 0 72px rgba(237, 198, 106, .02), 0 0 90px rgba(214, 163, 74, .06);
}

.zenx-chess-ambient {
  position: absolute;
  z-index: -2;
  inset: -18%;
  pointer-events: none;
  opacity: .22;
  background:
    linear-gradient(90deg, transparent 49.8%, rgba(145, 169, 202, .1) 50%, transparent 50.2%),
    linear-gradient(0deg, transparent 49.8%, rgba(145, 169, 202, .07) 50%, transparent 50.2%);
  background-size: 68px 68px;
  transform: perspective(680px) rotateX(62deg) translateY(42%);
  mask-image: linear-gradient(to bottom, transparent, #000 34%, #000 72%, transparent);
}

#TOPMOST,
#canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

#canvas {
  z-index: 1;
  display: block;
  background: transparent;
}

#canvas canvas {
  position: absolute !important;
  top: 0 !important;
  left: 0 !important;
  display: block !important;
  width: 100% !important;
  height: 100% !important;
  max-width: 100vw;
  max-height: 100dvh;
  margin: 0 !important;
  transform: none !important;
  touch-action: none;
  outline: none;
  filter: drop-shadow(0 24px 54px rgba(0, 0, 0, .42));
}

@media (min-aspect-ratio: 3 / 4) {
  #canvas canvas {
    top: 50% !important;
    left: 50% !important;
    width: 75dvh !important;
    height: 100dvh !important;
    transform: translate(-50%, -50%) !important;
  }
}

.zenx-mastery {
  position: fixed;
  z-index: 40;
  top: max(16px, env(safe-area-inset-top));
  right: max(16px, env(safe-area-inset-right));
  display: grid;
  grid-template-columns: 42px minmax(104px, auto);
  grid-template-rows: auto auto;
  align-items: center;
  gap: 2px 11px;
  min-width: 202px;
  padding: 9px 14px 9px 9px;
  overflow: hidden;
  color: var(--chess-cream);
  border: 1px solid rgba(145, 169, 202, .42);
  border-radius: 18px;
  background: linear-gradient(135deg, rgba(18, 43, 80, .94), rgba(5, 13, 27, .94));
  box-shadow: 0 18px 48px rgba(0, 0, 0, .3), inset 0 1px rgba(255, 255, 255, .08);
  backdrop-filter: blur(16px) saturate(.88);
  pointer-events: none;
  transition: opacity .2s ease, transform .2s ease;
}

.zenx-mastery::after {
  position: absolute;
  inset: auto 0 0;
  height: 3px;
  content: "";
  background: linear-gradient(90deg, var(--chess-jade), var(--chess-amber));
}

.zenx-mastery.is-hidden {
  opacity: 0;
  transform: translateY(-8px) scale(.98);
}

.zenx-mastery img {
  grid-row: 1 / 3;
  width: 42px;
  height: 42px;
  border: 1px solid rgba(237, 198, 106, .38);
  border-radius: 13px;
  object-fit: cover;
  box-shadow: 0 8px 20px rgba(0, 0, 0, .24);
}

.zenx-mastery span { display: flex; flex-direction: column; min-width: 0; }
.zenx-mastery small { color: var(--chess-amber); font: 700 8px/1.2 "Exo SemiBold", system-ui, sans-serif; letter-spacing: .15em; }
.zenx-mastery strong { overflow: hidden; font: 700 14px/1.2 "Roboto Slab Bold", Georgia, serif; text-overflow: ellipsis; white-space: nowrap; }
.zenx-mastery > b { grid-column: 2; color: var(--chess-mint); font: 650 10px/1.2 "Exo SemiBold", system-ui, sans-serif; letter-spacing: .035em; }

#orientation {
  position: fixed;
  z-index: 2147483646;
  inset: 0;
  display: none;
  place-content: center;
  justify-items: center;
  gap: 10px;
  padding: 32px;
  color: var(--chess-cream);
  text-align: center;
  background:
    radial-gradient(circle at center, rgba(73, 107, 155, .3), transparent 38%),
    linear-gradient(150deg, #122b50, #030811);
  font-family: system-ui, -apple-system, "Segoe UI", sans-serif;
}

#orientation img { width: 112px; height: 112px; border: 1px solid rgba(145, 169, 202, .45); border-radius: 28px; box-shadow: 0 22px 50px rgba(0, 0, 0, .36); transform: rotate(90deg); }
#orientation strong { margin-top: 13px; color: var(--chess-amber); font: 700 28px/1.15 "Roboto Slab Bold", Georgia, serif; }
#orientation span { color: var(--chess-mint); font-size: 15px; }

@media (orientation: landscape) and (max-height: 520px) {
  #orientation { display: grid; }
}

@media (max-width: 760px) {
  #zenx-chess-stage::before,
  #zenx-chess-stage::after,
  .zenx-chess-ambient { opacity: .18; }

  #canvas canvas { filter: none; }

  .zenx-mastery {
    top: max(7px, env(safe-area-inset-top));
    right: max(7px, env(safe-area-inset-right));
    min-width: 172px;
    transform: scale(.86);
    transform-origin: top right;
  }

  .zenx-mastery.is-hidden { transform: translateY(-8px) scale(.86); }
}

@media (prefers-reduced-motion: reduce) {
  .zenx-mastery { transition: none; }
}