/* Gambit Arena website. Colours, fonts and the chunky-glossy style follow the game's UI kit. */
:root {
  --bg: #07080f;
  --bg-2: #0d0f18;
  --card: rgba(26, 30, 46, 0.62);
  --card-solid: #1a1e2e;
  --card-2: #252a40;
  --line: rgba(255, 255, 255, 0.08);
  --line-2: rgba(255, 255, 255, 0.14);
  --text: #f4f5fa;
  --muted: #a3a9c2;
  --dim: #6f7591;
  --gold: #ffc94a;
  --gold-2: #f0a92a;
  --gold-3: #a8620c;
  --teal: #3ddbc4;
  --violet: #8a6bff;
  --pink: #ff6fa8;
  --red: #ff5a5f;
  --green: #4cd97b;
  --ink: #05040e;
  --radius: 22px;
  --radius-lg: 30px;
  --shadow: 0 20px 60px rgba(0, 0, 0, 0.45);
  --display: "Lilita One", "Arial Black", Impact, sans-serif;
  --body: "Nunito", "Segoe UI", system-ui, -apple-system, sans-serif;
  --wrap: 1180px;
  --gutter: clamp(16px, 4vw, 32px);
  /* piece gradient (the theme studio changes these) */
  --w1: #e8ddc8; --w2: #ffffff; --b1: #151317; --b2: #3b3540;
  color-scheme: dark;
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; scroll-padding-top: 84px; }
body {
  margin: 0; background: var(--bg); color: var(--text); font-family: var(--body); font-size: 17px; line-height: 1.6;
  -webkit-font-smoothing: antialiased; overflow-x: hidden;
}
img, svg, canvas { display: block; max-width: 100%; }
a { color: var(--gold); text-decoration: none; }
a:hover { text-decoration: underline; text-underline-offset: 3px; }
h1, h2, h3, h4 { line-height: 1.12; margin: 0 0 0.5em; letter-spacing: 0.005em; }
h2 { font-family: var(--display); font-weight: 400; font-size: clamp(2.1rem, 5vw, 3.4rem); }
h3 { font-size: 1.25rem; font-weight: 900; }
p { margin: 0 0 1em; }
:focus-visible { outline: 3px solid var(--teal); outline-offset: 3px; border-radius: 8px; }
::selection { background: rgba(255, 201, 74, 0.35); }

.wrap { width: min(var(--wrap), 100% - var(--gutter) * 2); margin-inline: auto; }
.skip { position: absolute; left: -999px; top: 8px; z-index: 100; background: var(--gold); color: var(--ink); padding: 10px 16px; border-radius: 10px; font-weight: 800; }
.skip:focus { left: 12px; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }

/* ---------------------------------------------------------------- buttons, pills */
.btn {
  --b: var(--gold); --b2: var(--gold-2); --lip: #7a4a08; --fg: var(--ink);
  position: relative; display: inline-flex; align-items: center; gap: 10px; padding: 14px 24px 16px;
  font: 900 1.02rem/1 var(--body); letter-spacing: 0.01em; color: var(--fg); border: 0; cursor: pointer; border-radius: 16px;
  background: linear-gradient(180deg, color-mix(in srgb, var(--b) 80%, #fff) 0%, var(--b) 45%, var(--b2) 100%);
  box-shadow: 0 5px 0 var(--lip), 0 10px 30px color-mix(in srgb, var(--b) 35%, transparent), inset 0 1px 0 rgba(255, 255, 255, 0.6);
  transition: transform 0.15s ease, box-shadow 0.15s ease, filter 0.2s;
  text-decoration: none !important; isolation: isolate; overflow: hidden;
}
.btn::after { /* shine sweep */
  content: ""; position: absolute; inset: 0; z-index: -1;
  background: linear-gradient(110deg, transparent 30%, rgba(255, 255, 255, 0.55) 48%, transparent 66%);
  transform: translateX(-120%); animation: shine 4.5s ease-in-out infinite;
}
.btn:hover { transform: translateY(-2px); filter: brightness(1.05); }
.btn:active { transform: translateY(4px); box-shadow: 0 1px 0 var(--lip), 0 6px 18px color-mix(in srgb, var(--b) 25%, transparent); }
.btn.teal { --b: #7ff3e2; --b2: #2fbfaa; --lip: #146b60; }
.btn.ghost { --fg: var(--text); background: rgba(255, 255, 255, 0.06); box-shadow: inset 0 0 0 1px var(--line-2); backdrop-filter: blur(10px); }
.btn.ghost::after { display: none; }
.btn.ghost:active { box-shadow: inset 0 0 0 1px var(--line-2); }
.btn svg { width: 22px; height: 22px; flex: none; }
.btn small { display: block; font-size: 0.68rem; font-weight: 800; opacity: 0.75; letter-spacing: 0.06em; text-transform: uppercase; margin-bottom: 3px; }
.btn .two { display: flex; flex-direction: column; align-items: flex-start; line-height: 1.05; }
@keyframes shine { 0%, 62% { transform: translateX(-120%); } 82%, 100% { transform: translateX(120%); } }

.eyebrow {
  display: inline-flex; align-items: center; gap: 8px; padding: 6px 14px; margin-bottom: 18px; border-radius: 999px;
  font-size: 0.8rem; font-weight: 900; letter-spacing: 0.14em; text-transform: uppercase; color: var(--teal);
  background: rgba(61, 219, 196, 0.08); box-shadow: inset 0 0 0 1px rgba(61, 219, 196, 0.25);
}
.eyebrow.gold { color: var(--gold); background: rgba(255, 201, 74, 0.08); box-shadow: inset 0 0 0 1px rgba(255, 201, 74, 0.25); }
.eyebrow.violet { color: #c2b2ff; background: rgba(138, 107, 255, 0.1); box-shadow: inset 0 0 0 1px rgba(138, 107, 255, 0.3); }
.lead { font-size: clamp(1.05rem, 2vw, 1.22rem); color: var(--muted); max-width: 62ch; }
.center { text-align: center; }
.center .lead { margin-inline: auto; }

/* ---------------------------------------------------------------- header */
.site-header {
  position: fixed; inset: 0 0 auto; z-index: 50; transition: background 0.3s, box-shadow 0.3s, backdrop-filter 0.3s;
  padding-top: env(safe-area-inset-top);
}
.site-header.scrolled { background: rgba(7, 8, 15, 0.72); backdrop-filter: blur(16px) saturate(1.4); box-shadow: 0 1px 0 var(--line); }
.nav { display: flex; align-items: center; justify-content: space-between; gap: 16px; height: 72px; }
.brand { display: flex; align-items: center; gap: 10px; color: var(--text); font-family: var(--display); font-size: 1.45rem; letter-spacing: 0.02em; text-decoration: none !important; }
.brand img { width: 40px; height: 40px; border-radius: 11px; box-shadow: 0 0 0 1px rgba(255, 201, 74, 0.4), 0 6px 18px rgba(255, 170, 60, 0.25); }
.brand span { background: linear-gradient(180deg, #fff7d1, var(--gold) 50%, var(--gold-2)); -webkit-background-clip: text; background-clip: text; color: transparent; }
.nav-links { display: flex; align-items: center; gap: 4px; list-style: none; margin: 0; padding: 0; }
.nav-links a { display: block; padding: 8px 13px; border-radius: 10px; color: var(--muted); font-weight: 800; font-size: 0.95rem; text-decoration: none; transition: color 0.2s, background 0.2s; }
.nav-links a:hover, .nav-links a[aria-current="page"] { color: var(--text); background: rgba(255, 255, 255, 0.06); }
.nav .btn { padding: 10px 18px 12px; font-size: 0.92rem; }
.menu-btn { display: none; width: 44px; height: 44px; border-radius: 12px; border: 0; background: rgba(255, 255, 255, 0.06); color: var(--text); cursor: pointer; }
.menu-btn svg { margin: auto; width: 22px; height: 22px; }
@media (max-width: 920px) {
  .menu-btn { display: block; }
  .nav-links {
    position: fixed; inset: calc(72px + env(safe-area-inset-top)) 12px auto; flex-direction: column; align-items: stretch; padding: 10px;
    background: rgba(13, 15, 24, 0.97); border-radius: 18px; box-shadow: var(--shadow), inset 0 0 0 1px var(--line);
    transform: translateY(-12px); opacity: 0; pointer-events: none; transition: 0.25s;
  }
  .nav-links.open { transform: none; opacity: 1; pointer-events: auto; }
  .nav-links a { padding: 13px 16px; font-size: 1.05rem; }
  .nav .cta-desktop { display: none; }
}

/* ---------------------------------------------------------------- hero */
.hero { position: relative; min-height: 100svh; display: flex; align-items: center; overflow: hidden; isolation: isolate; padding: 120px 0 90px; }
.hero-stage { position: absolute; inset: 0; z-index: -2; background: #090718 url("../img/hero-wide.webp") center / cover no-repeat; }
.hero-stage canvas { position: absolute; inset: 0; width: 100% !important; height: 100% !important; opacity: 0; transition: opacity 1.2s ease; }
.hero-stage.is-live canvas { opacity: 1; }
.hero::before { /* readability shade */
  content: ""; position: absolute; inset: 0; z-index: -1; pointer-events: none;
  background: linear-gradient(90deg, rgba(5, 4, 14, 0.94) 0%, rgba(8, 6, 22, 0.7) 34%, rgba(8, 6, 22, 0) 62%),
              linear-gradient(0deg, var(--bg) 0%, rgba(7, 8, 15, 0) 22%);
}
.hero-copy { max-width: 620px; }
.hero h1 { margin: 0 0 6px; font-family: var(--display); font-weight: 400; line-height: 0.9; }
.hero h1 .word {
  display: block; font-size: clamp(3.6rem, 10.5vw, 7.6rem); letter-spacing: 0.01em;
  background: linear-gradient(180deg, #fff7d1 0%, #ffd86a 38%, #f0a92a 62%, #a8620c 100%);
  -webkit-background-clip: text; background-clip: text; color: transparent;
  -webkit-text-stroke: 2px #3a1d00; paint-order: stroke fill;
  filter: drop-shadow(0 6px 0 #2a1400) drop-shadow(0 0 24px rgba(255, 180, 60, 0.45));
}
.hero h1 .tag { display: block; margin-top: 18px; font-family: var(--body); font-weight: 900; font-size: clamp(0.9rem, 2.1vw, 1.25rem); letter-spacing: 0.34em; color: #f4f2ff; text-shadow: 0 2px 8px rgba(0, 0, 0, 0.8); }
.hero .bar { width: 240px; height: 4px; margin: 14px 0 22px; border-radius: 2px; background: linear-gradient(90deg, var(--teal), var(--violet) 60%, transparent); }
.hero .lead { color: #c9cde0; text-shadow: 0 1px 10px rgba(0, 0, 0, 0.6); }
.hero-ctas { display: flex; flex-wrap: wrap; gap: 14px; margin: 26px 0 26px; }
.live-row { display: flex; flex-wrap: wrap; gap: 10px; }
.live-pill {
  display: inline-flex; align-items: center; gap: 9px; padding: 8px 14px; border-radius: 999px; font-size: 0.88rem; font-weight: 800; color: #dfe2f2;
  background: rgba(10, 10, 24, 0.6); box-shadow: inset 0 0 0 1px var(--line-2); backdrop-filter: blur(10px);
}
.live-pill b { color: var(--text); }
.dot { width: 9px; height: 9px; border-radius: 50%; background: var(--dim); flex: none; }
.dot.on { background: var(--green); box-shadow: 0 0 0 0 rgba(76, 217, 123, 0.7); animation: ping 1.8s infinite; }
.dot.gold { background: var(--gold); box-shadow: 0 0 10px var(--gold); }
@keyframes ping { 70% { box-shadow: 0 0 0 9px rgba(76, 217, 123, 0); } 100% { box-shadow: 0 0 0 0 rgba(76, 217, 123, 0); } }
.scroll-hint { position: absolute; left: 50%; bottom: 24px; transform: translateX(-50%); width: 26px; height: 42px; border-radius: 14px; box-shadow: inset 0 0 0 2px rgba(255, 255, 255, 0.3); }
.scroll-hint::after { content: ""; position: absolute; left: 50%; top: 9px; width: 4px; height: 8px; margin-left: -2px; border-radius: 2px; background: var(--gold); animation: wheel 1.8s infinite; }
@keyframes wheel { 0% { opacity: 0; transform: translateY(-3px); } 30% { opacity: 1; } 100% { opacity: 0; transform: translateY(12px); } }
@media (max-width: 760px) {
  .hero { align-items: flex-start; padding-top: 104px; min-height: 100svh; }
  .hero-stage { background-image: url("../img/hero-tall.webp"); }
  .hero::before { background: linear-gradient(180deg, rgba(5, 4, 14, 0.92) 0%, rgba(8, 6, 22, 0.55) 42%, rgba(8, 6, 22, 0) 62%), linear-gradient(0deg, var(--bg) 0%, rgba(7, 8, 15, 0) 26%); }
  .hero .lead { font-size: 1rem; }
  .scroll-hint { display: none; }
}

/* ---------------------------------------------------------------- sections */
section { position: relative; }
.section { padding: clamp(72px, 11vw, 140px) 0; }
.section-head { margin-bottom: clamp(36px, 6vw, 64px); }
.glow-bg::before {
  content: ""; position: absolute; inset: 0; z-index: -1; pointer-events: none;
  background: radial-gradient(60% 50% at 80% 0%, rgba(138, 107, 255, 0.14), transparent 70%), radial-gradient(50% 40% at 0% 100%, rgba(61, 219, 196, 0.08), transparent 70%);
}

/* stats band */
.stats { display: grid; grid-template-columns: repeat(6, 1fr); gap: 1px; border-radius: var(--radius-lg); overflow: hidden; background: var(--line); box-shadow: inset 0 0 0 1px var(--line); margin-top: -40px; position: relative; z-index: 2; }
.stat { background: rgba(13, 15, 24, 0.92); padding: 26px 16px; text-align: center; backdrop-filter: blur(12px); }
.stat b { display: block; font-family: var(--display); font-weight: 400; font-size: clamp(2rem, 4.2vw, 2.9rem); line-height: 1; background: linear-gradient(180deg, #fff, var(--gold)); -webkit-background-clip: text; background-clip: text; color: transparent; }
.stat span { display: block; margin-top: 8px; font-size: 0.84rem; font-weight: 800; color: var(--muted); letter-spacing: 0.06em; text-transform: uppercase; }
@media (max-width: 900px) { .stats { grid-template-columns: repeat(3, 1fr); } }
@media (max-width: 480px) { .stats { grid-template-columns: repeat(2, 1fr); } }

/* glass cards with an animated gradient border and a cursor spotlight */
@property --angle { syntax: "<angle>"; initial-value: 0deg; inherits: false; }
.card {
  --accent: var(--gold);
  position: relative; border-radius: var(--radius); padding: 28px; overflow: hidden; isolation: isolate;
  background: linear-gradient(#151827f2, #151827f2) padding-box, /* near-opaque so the border glow stays on the border */
              conic-gradient(from var(--angle), transparent 0 60%, color-mix(in srgb, var(--accent) 70%, transparent) 75%, transparent 90%) border-box,
              linear-gradient(var(--line-2), var(--line-2)) border-box;
  border: 1px solid transparent; backdrop-filter: blur(14px);
  transition: transform 0.35s cubic-bezier(.2, .8, .2, 1), box-shadow 0.35s;
}
.card::before { /* spotlight */
  content: ""; position: absolute; inset: 0; z-index: -1; opacity: 0; transition: opacity 0.3s;
  background: radial-gradient(420px circle at var(--mx, 50%) var(--my, 50%), color-mix(in srgb, var(--accent) 16%, transparent), transparent 60%);
}
.card:hover { transform: translateY(-4px); box-shadow: 0 24px 60px rgba(0, 0, 0, 0.45), 0 0 0 1px color-mix(in srgb, var(--accent) 25%, transparent); animation: spin-border 4s linear infinite; }
.card:hover::before { opacity: 1; }
@keyframes spin-border { to { --angle: 360deg; } }
.card h3 { margin-top: 18px; }
.card p { color: var(--muted); margin: 0; font-size: 0.98rem; }
.card .tagline { display: inline-block; margin-top: 16px; font-size: 0.82rem; font-weight: 900; letter-spacing: 0.06em; text-transform: uppercase; color: var(--accent); }
.icon-badge {
  width: 58px; height: 58px; border-radius: 17px; display: grid; place-items: center; color: var(--ink);
  background: linear-gradient(160deg, color-mix(in srgb, var(--accent) 65%, #fff), var(--accent));
  box-shadow: 0 4px 0 color-mix(in srgb, var(--accent) 45%, #000), 0 10px 26px color-mix(in srgb, var(--accent) 35%, transparent);
}
.icon-badge svg { width: 30px; height: 30px; }

.bento { display: grid; grid-template-columns: repeat(12, 1fr); gap: 18px; }
.bento > * { grid-column: span 4; }
.bento .wide { grid-column: span 8; }
.bento .half { grid-column: span 6; }
@media (max-width: 980px) { .bento > *, .bento .wide, .bento .half { grid-column: span 6; } }
@media (max-width: 640px) { .bento > *, .bento .wide, .bento .half { grid-column: span 12; } }
.card.feature-big { display: grid; grid-template-columns: 1.1fr 1fr; gap: 22px; align-items: center; }
@media (max-width: 640px) { .card.feature-big { grid-template-columns: 1fr; } }

/* mock UI fragments inside cards */
.mock { border-radius: 16px; background: rgba(5, 6, 14, 0.7); box-shadow: inset 0 0 0 1px var(--line); padding: 14px; font-size: 0.86rem; }
.mock-row { display: flex; align-items: center; justify-content: space-between; gap: 10px; padding: 8px 10px; border-radius: 10px; }
.mock-row + .mock-row { margin-top: 6px; }
.mock-row.me { background: rgba(255, 201, 74, 0.1); box-shadow: inset 0 0 0 1px rgba(255, 201, 74, 0.25); }
.mock-row .who { display: flex; align-items: center; gap: 10px; font-weight: 800; }
.ava { width: 30px; height: 30px; border-radius: 50%; display: grid; place-items: center; font-weight: 900; font-size: 0.8rem; color: var(--ink); flex: none; }
.clock { font-family: ui-monospace, "SF Mono", Consolas, monospace; font-weight: 800; padding: 3px 9px; border-radius: 8px; background: #fff; color: var(--ink); }
.clock.low { background: var(--red); color: #fff; }
.fire { color: #ff9a3a; font-weight: 900; }
.code-keys { display: grid; grid-template-columns: repeat(6, 1fr); gap: 6px; }
.code-keys span { display: grid; place-items: center; aspect-ratio: 0.8; border-radius: 10px; font-family: var(--display); font-size: 1.5rem; color: var(--gold); background: rgba(255, 255, 255, 0.05); box-shadow: inset 0 0 0 1px var(--line-2); }

/* computer opponents */
.bots { display: grid; grid-template-columns: repeat(5, 1fr); gap: 16px; }
@media (max-width: 980px) { .bots { grid-template-columns: repeat(3, 1fr); } }
@media (max-width: 560px) { .bots { grid-template-columns: repeat(2, 1fr); } }
.bot { text-align: center; padding: 24px 16px; }
.bot .face { width: 84px; height: 84px; margin: 0 auto 14px; border-radius: 50%; display: grid; place-items: center; background: radial-gradient(circle at 35% 30%, color-mix(in srgb, var(--accent) 60%, #fff), var(--accent) 60%, color-mix(in srgb, var(--accent) 50%, #000)); box-shadow: 0 0 0 4px rgba(255, 255, 255, 0.06), 0 0 0 7px color-mix(in srgb, var(--accent) 35%, transparent), 0 14px 30px rgba(0, 0, 0, 0.5); }
.bot .face svg { width: 46px; height: 46px; filter: drop-shadow(0 2px 2px rgba(0, 0, 0, 0.4)); }
.bot h3 { font-size: 1.05rem; margin: 0 0 2px; }
.bot .elo { font-family: var(--display); font-size: 1.6rem; color: var(--accent); line-height: 1.2; }
.bot p { font-size: 0.86rem; }

/* ---------------------------------------------------------------- chess boards (puzzle + previews) */
.board {
  --light: #e9c99a; --dark: #9a6338; --frame: #4a2a14; --trim: #c08a4a; --hl: #ffd45a;
  --w1: #e8ddc8; --w2: #ffffff; --wr: #ffffff; --b1: #151317; --b2: #3b3540; --br: #b9a6ff;
  position: relative; aspect-ratio: 1; padding: 3.2%; border-radius: 18px;
  background: linear-gradient(145deg, color-mix(in srgb, var(--frame) 80%, #fff 20%), var(--frame) 40%, color-mix(in srgb, var(--frame) 70%, #000));
  box-shadow: 0 0 0 3px var(--trim), 0 0 0 4px rgba(0, 0, 0, 0.5), 0 30px 70px rgba(0, 0, 0, 0.55), inset 0 2px 0 rgba(255, 255, 255, 0.2);
  transition: background 0.5s, box-shadow 0.5s;
}
.board-grid { display: grid; grid-template-columns: repeat(8, 1fr); grid-template-rows: repeat(8, 1fr); width: 100%; height: 100%; border-radius: 6px; overflow: hidden; box-shadow: 0 0 0 1px rgba(0, 0, 0, 0.5); }
.sq { position: relative; border: 0; padding: 0; margin: 0; background: var(--light); transition: background 0.5s; cursor: default; display: grid; place-items: center; }
.sq.dk { background: var(--dark); }
.sq .coord { position: absolute; font-size: clamp(8px, 1.6vw, 11px); font-weight: 900; opacity: 0.6; pointer-events: none; }
.sq .coord.f { right: 4%; bottom: 2%; }
.sq .coord.r { left: 5%; top: 3%; }
.sq.dk .coord { color: var(--light); }
.sq:not(.dk) .coord { color: var(--dark); }
.sq.sel { box-shadow: inset 0 0 0 4px var(--hl); }
.sq.last::after { content: ""; position: absolute; inset: 0; background: color-mix(in srgb, var(--hl) 38%, transparent); }
.sq.hint::before { content: ""; position: absolute; width: 30%; height: 30%; border-radius: 50%; background: rgba(0, 0, 0, 0.28); z-index: 2; }
.sq.hint.cap::before { width: 86%; height: 86%; background: transparent; box-shadow: inset 0 0 0 5px rgba(0, 0, 0, 0.28); }
.sq.check { background: radial-gradient(circle, #ff5a5f 0%, rgba(255, 90, 95, 0.6) 40%, transparent 72%), var(--light); }
.sq.dk.check { background: radial-gradient(circle, #ff5a5f 0%, rgba(255, 90, 95, 0.6) 40%, transparent 72%), var(--dark); }
.pc { position: relative; z-index: 3; width: 90%; height: 90%; pointer-events: none; transition: transform 0.35s cubic-bezier(.2, .8, .2, 1), filter 0.5s; }
.pc.w { filter: drop-shadow(0 0 3px color-mix(in srgb, var(--wr) 60%, transparent)) drop-shadow(0 3px 2px rgba(0, 0, 0, 0.45)); }
.pc.b { filter: drop-shadow(0 0 3px color-mix(in srgb, var(--br) 70%, transparent)) drop-shadow(0 3px 2px rgba(0, 0, 0, 0.45)); }
.board.playable .sq { cursor: pointer; }
.board.shake { animation: shake 0.42s; }
@keyframes shake { 20%, 60% { transform: translateX(-7px); } 40%, 80% { transform: translateX(7px); } }
#piece-grad-w stop:first-child { stop-color: var(--w1); } #piece-grad-w stop:last-child { stop-color: var(--w2); }
#piece-grad-b stop:first-child { stop-color: var(--b1); } #piece-grad-b stop:last-child { stop-color: var(--b2); }

/* puzzle section */
.puzzle { display: grid; grid-template-columns: minmax(0, 560px) 1fr; gap: clamp(28px, 5vw, 64px); align-items: center; }
@media (max-width: 900px) { .puzzle { grid-template-columns: 1fr; } }
.puzzle .board { width: 100%; max-width: 560px; }
.puzzle-panel .status { min-height: 3.2em; font-size: 1.08rem; font-weight: 800; }
.puzzle-panel .status.ok { color: var(--green); }
.puzzle-panel .status.bad { color: var(--red); }
.puzzle-steps { display: flex; gap: 8px; margin: 20px 0; }
.puzzle-steps button { width: 46px; height: 46px; border-radius: 14px; border: 0; font: 900 1rem var(--body); color: var(--muted); background: rgba(255, 255, 255, 0.06); box-shadow: inset 0 0 0 1px var(--line-2); cursor: pointer; }
.puzzle-steps button[aria-pressed="true"] { color: var(--ink); background: var(--gold); box-shadow: 0 3px 0 #7a4a08; }
.puzzle-steps button.done::after { content: " ✓"; }
.banner {
  position: absolute; left: 50%; top: 50%; z-index: 10; transform: translate(-50%, -50%) scale(0.6); opacity: 0; pointer-events: none;
  font-family: var(--display); font-size: clamp(2rem, 7vw, 3.6rem); white-space: nowrap;
  background: linear-gradient(180deg, #fff7d1, #ffd86a 40%, #f0a92a 70%); -webkit-background-clip: text; background-clip: text; color: transparent;
  -webkit-text-stroke: 2px #3a1d00; paint-order: stroke fill; filter: drop-shadow(0 5px 0 #2a1400) drop-shadow(0 0 20px rgba(255, 180, 60, 0.7));
}
.banner.show { animation: pop 1.8s cubic-bezier(.2, 1.4, .4, 1) forwards; }
@keyframes pop { 0% { opacity: 0; transform: translate(-50%, -50%) scale(0.5) rotate(-6deg); } 18% { opacity: 1; transform: translate(-50%, -50%) scale(1.08) rotate(2deg); } 30% { transform: translate(-50%, -50%) scale(1) rotate(0); } 80% { opacity: 1; } 100% { opacity: 0; transform: translate(-50%, -50%) scale(1.04); } }
.confetti { position: absolute; inset: 0; pointer-events: none; z-index: 9; overflow: visible; }
.confetti i { position: absolute; left: 50%; top: 45%; width: 9px; height: 14px; border-radius: 2px; animation: burst 1.4s ease-out forwards; }
@keyframes burst { to { transform: translate(var(--dx), var(--dy)) rotate(var(--r)); opacity: 0; } }

/* customization studio */
.studio { display: grid; grid-template-columns: minmax(0, 500px) 1fr; gap: clamp(28px, 5vw, 60px); align-items: start; }
@media (max-width: 960px) { .studio { grid-template-columns: 1fr; } }
.studio-stage { position: relative; border-radius: var(--radius-lg); padding: clamp(22px, 5vw, 46px); overflow: hidden; isolation: isolate; transition: background 0.8s; background: radial-gradient(120% 90% at 50% 0%, var(--sky1, #2b3245), var(--sky2, #0e1018)); box-shadow: inset 0 0 0 1px var(--line-2), var(--shadow); }
.studio-stage .fx { position: absolute; inset: 0; z-index: -1; pointer-events: none; }
.studio-stage .fx i { position: absolute; top: -10px; border-radius: 50%; background: var(--fx, #fff); opacity: 0.8; animation: fall linear infinite; }
.studio-stage[data-fx="up"] .fx i { top: auto; bottom: -10px; animation-name: rise; }
@keyframes fall { to { transform: translate(var(--drift, 20px), 620px); } }
@keyframes rise { to { transform: translate(var(--drift, 20px), -620px); opacity: 0; } }
.studio-stage .label { margin-top: 18px; text-align: center; font-weight: 900; color: var(--text); text-shadow: 0 2px 8px rgba(0, 0, 0, 0.6); }
.studio-stage .label small { display: block; font-weight: 700; color: rgba(255, 255, 255, 0.7); }
.picker h3 { display: flex; align-items: baseline; justify-content: space-between; gap: 10px; margin: 0 0 12px; font-size: 1rem; letter-spacing: 0.08em; text-transform: uppercase; color: var(--muted); }
.picker h3 span { font-size: 0.8rem; letter-spacing: 0.02em; text-transform: none; color: var(--dim); font-weight: 700; }
.picker + .picker { margin-top: 28px; }
.swatches { display: flex; flex-wrap: wrap; gap: 10px; }
.swatch {
  position: relative; display: inline-flex; align-items: center; gap: 10px; padding: 8px 14px 8px 8px; border: 0; border-radius: 14px; cursor: pointer;
  font: 800 0.88rem var(--body); color: var(--text); background: rgba(255, 255, 255, 0.05); box-shadow: inset 0 0 0 1px var(--line-2);
  transition: transform 0.15s, box-shadow 0.2s, background 0.2s;
}
.swatch:hover { transform: translateY(-2px); background: rgba(255, 255, 255, 0.08); }
.swatch[aria-pressed="true"] { box-shadow: inset 0 0 0 2px var(--gold), 0 0 22px rgba(255, 201, 74, 0.25); background: rgba(255, 201, 74, 0.08); }
.swatch .chip { width: 30px; height: 30px; border-radius: 9px; flex: none; box-shadow: inset 0 0 0 1px rgba(0, 0, 0, 0.35), 0 2px 6px rgba(0, 0, 0, 0.35); }
.swatch .lvl { font-size: 0.72rem; font-weight: 900; color: var(--dim); }

/* ranked ladder */
.ladder { display: grid; grid-template-columns: repeat(7, 1fr); gap: 12px; align-items: end; }
@media (max-width: 900px) { .ladder { grid-template-columns: repeat(4, 1fr); } }
@media (max-width: 520px) { .ladder { grid-template-columns: repeat(2, 1fr); } }
.tier { text-align: center; padding: 22px 10px 18px; border-radius: 20px; background: linear-gradient(180deg, color-mix(in srgb, var(--c) 14%, transparent), rgba(13, 15, 24, 0.7)); box-shadow: inset 0 0 0 1px color-mix(in srgb, var(--c) 30%, transparent); transition: transform 0.3s; }
.tier:hover { transform: translateY(-6px); }
.tier .emblem { width: 64px; height: 72px; margin: 0 auto 12px; filter: drop-shadow(0 6px 16px color-mix(in srgb, var(--c) 50%, transparent)); }
.tier b { display: block; font-family: var(--display); font-weight: 400; font-size: 1.25rem; color: var(--c); }
.tier span { display: block; font-size: 0.78rem; font-weight: 800; color: var(--muted); }
.ladder-notes { margin-top: 28px; }

/* move reactions */
.reactions { display: flex; flex-wrap: wrap; gap: 12px; margin: 22px 0 6px; }
.react { display: inline-flex; align-items: center; gap: 10px; padding: 10px 16px 10px 10px; border-radius: 999px; font-weight: 900; background: rgba(255, 255, 255, 0.05); box-shadow: inset 0 0 0 1px var(--line-2); }
.react i { font-style: normal; display: grid; place-items: center; min-width: 34px; height: 34px; padding: 0 6px; border-radius: 999px; color: #fff; font-size: 0.85rem; background: var(--c); box-shadow: 0 3px 0 color-mix(in srgb, var(--c) 50%, #000), 0 0 16px color-mix(in srgb, var(--c) 45%, transparent); }
.accuracy { display: flex; align-items: center; gap: 22px; margin-top: 24px; }
.ring { --p: 92; width: 128px; height: 128px; border-radius: 50%; display: grid; place-items: center; flex: none;
  background: radial-gradient(closest-side, var(--card-solid) 78%, transparent 80% 100%), conic-gradient(var(--teal) calc(var(--p) * 1%), rgba(255, 255, 255, 0.08) 0); }
.ring b { font-family: var(--display); font-weight: 400; font-size: 2.1rem; }
.ring b small { font-size: 0.9rem; }

/* leaderboard */
.board-tabs { display: inline-flex; gap: 6px; padding: 6px; border-radius: 16px; background: rgba(255, 255, 255, 0.04); box-shadow: inset 0 0 0 1px var(--line); margin-bottom: 18px; flex-wrap: wrap; }
.board-tabs button { border: 0; padding: 10px 16px; border-radius: 11px; font: 900 0.92rem var(--body); color: var(--muted); background: transparent; cursor: pointer; }
.board-tabs button[aria-selected="true"] { color: var(--ink); background: var(--gold); box-shadow: 0 3px 0 #7a4a08; }
.lb { list-style: none; margin: 0; padding: 0; counter-reset: rank; }
.lb li { display: grid; grid-template-columns: 44px 1fr auto; align-items: center; gap: 12px; padding: 12px 14px; border-radius: 14px; }
.lb li:nth-child(odd) { background: rgba(255, 255, 255, 0.03); }
.lb .rk { font-family: var(--display); font-size: 1.35rem; color: var(--dim); text-align: center; }
.lb li:nth-child(1) .rk { color: var(--gold); } .lb li:nth-child(2) .rk { color: #d6dce6; } .lb li:nth-child(3) .rk { color: #e3a26b; }
.lb .nm { font-weight: 800; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.lb .nm .vip { margin-left: 6px; font-size: 0.7rem; padding: 2px 7px; border-radius: 999px; color: var(--ink); background: var(--gold); vertical-align: 2px; }
.lb .sc { font-family: var(--display); font-size: 1.25rem; color: var(--teal); }
.lb .sc small { font-family: var(--body); font-weight: 800; font-size: 0.75rem; color: var(--dim); margin-left: 4px; }
.lb-empty { padding: 26px; text-align: center; color: var(--muted); }

/* trust */
.checks { list-style: none; margin: 18px 0 0; padding: 0; display: grid; gap: 12px; }
.checks li { position: relative; padding-left: 34px; color: var(--muted); }
.checks li::before { content: ""; position: absolute; left: 0; top: 3px; width: 22px; height: 22px; border-radius: 7px; background: var(--green) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%2305040e' stroke-width='3.2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M5 12.5l4.5 4.5L19 7.5'/%3E%3C/svg%3E") center / 15px no-repeat; }
.checks li b { color: var(--text); }

/* FAQ */
.faq { max-width: 860px; margin-inline: auto; }
.faq details { border-radius: 18px; background: rgba(255, 255, 255, 0.035); box-shadow: inset 0 0 0 1px var(--line); transition: background 0.2s; }
.faq details + details { margin-top: 12px; }
.faq details[open] { background: rgba(255, 255, 255, 0.06); }
.faq summary { list-style: none; cursor: pointer; padding: 20px 56px 20px 22px; font-weight: 900; font-size: 1.06rem; position: relative; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; position: absolute; right: 22px; top: 50%; transform: translateY(-50%); font: 400 1.8rem/1 var(--display); color: var(--gold); transition: transform 0.25s; }
.faq details[open] summary::after { transform: translateY(-50%) rotate(45deg); }
.faq details > div { padding: 0 22px 20px; color: var(--muted); }

/* final CTA */
.cta-final { position: relative; overflow: hidden; isolation: isolate; border-radius: 36px; padding: clamp(48px, 8vw, 96px) clamp(24px, 6vw, 72px); text-align: center;
  background: radial-gradient(80% 120% at 50% 0%, rgba(138, 107, 255, 0.4), transparent 60%), radial-gradient(60% 80% at 50% 100%, rgba(255, 170, 60, 0.25), transparent 70%), #0f0b26;
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.12), var(--shadow); }
.cta-final h2 { font-size: clamp(2.4rem, 6.4vw, 4.4rem); }
.cta-final .hero-ctas { justify-content: center; margin-bottom: 0; }
.cta-final .kings { position: absolute; inset: 0; z-index: -1; opacity: 0.12; background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='80' height='80' viewBox='0 0 45 45'%3E%3Cpath fill='%23ffc94a' d='M21 4h3v4h4v3h-4v3h-3v-3h-4V8h4zM14 32h17l2-12c-3-3-7-4-10.5-4S15 17 12 20zM12 38h21v-3c0-2-2-3-4-3H16c-2 0-4 1-4 3z'/%3E%3C/svg%3E") 0 0 / 80px 80px; mask-image: radial-gradient(circle at 50% 50%, #000, transparent 70%); animation: drift 30s linear infinite; }
@keyframes drift { to { background-position: 800px 400px; } }

/* footer */
.site-footer { padding: 64px 0 calc(40px + env(safe-area-inset-bottom)); border-top: 1px solid var(--line); margin-top: clamp(72px, 10vw, 120px); color: var(--muted); font-size: 0.95rem; }
.foot { display: grid; grid-template-columns: 1.4fr repeat(3, 1fr); gap: 32px; }
@media (max-width: 760px) { .foot { grid-template-columns: 1fr 1fr; } .foot > :first-child { grid-column: 1 / -1; } }
.foot h4 { color: var(--text); font-size: 0.85rem; letter-spacing: 0.12em; text-transform: uppercase; margin-bottom: 14px; }
.foot ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 9px; }
.foot a { color: var(--muted); }
.foot a:hover { color: var(--text); }
.copy { margin-top: 44px; padding-top: 22px; border-top: 1px solid var(--line); display: flex; flex-wrap: wrap; justify-content: space-between; gap: 12px; font-size: 0.85rem; color: var(--dim); }

/* ---------------------------------------------------------------- article pages */
.page-hero { padding: 150px 0 50px; position: relative; isolation: isolate; }
.page-hero::before { content: ""; position: absolute; inset: 0; z-index: -1; background: radial-gradient(60% 100% at 70% 0%, rgba(138, 107, 255, 0.22), transparent 70%), radial-gradient(40% 80% at 10% 20%, rgba(255, 170, 60, 0.12), transparent 70%); }
.page-hero h1 { font-family: var(--display); font-weight: 400; font-size: clamp(2.4rem, 6vw, 4.2rem); background: linear-gradient(180deg, #fff 30%, var(--gold)); -webkit-background-clip: text; background-clip: text; color: transparent; }
.crumbs { display: flex; flex-wrap: wrap; gap: 8px; list-style: none; padding: 0; margin: 0 0 22px; font-size: 0.88rem; font-weight: 800; color: var(--dim); }
.crumbs li + li::before { content: "›"; margin-right: 8px; color: var(--dim); }
.crumbs a { color: var(--muted); }
.article { display: grid; grid-template-columns: 240px minmax(0, 1fr); gap: 56px; align-items: start; }
@media (max-width: 960px) { .article { grid-template-columns: 1fr; gap: 24px; } }
.toc { position: sticky; top: 96px; padding: 20px; border-radius: 18px; background: rgba(255, 255, 255, 0.035); box-shadow: inset 0 0 0 1px var(--line); font-size: 0.92rem; }
@media (max-width: 960px) { .toc { position: static; } }
.toc b { display: block; margin-bottom: 10px; font-size: 0.8rem; letter-spacing: 0.12em; text-transform: uppercase; color: var(--muted); }
.toc ol { margin: 0; padding-left: 20px; display: grid; gap: 6px; }
.toc a { color: var(--text); font-weight: 700; }
.prose { max-width: 760px; }
.prose h2 { font-size: clamp(1.8rem, 3.6vw, 2.4rem); margin-top: 1.8em; }
.prose h2:first-child { margin-top: 0; }
.prose h3 { font-size: 1.2rem; margin-top: 1.6em; color: var(--gold); }
.prose p, .prose li { color: #c6cadb; }
.prose ul, .prose ol { padding-left: 1.3em; }
.prose li + li { margin-top: 0.4em; }
.prose strong { color: var(--text); }
.prose table { width: 100%; border-collapse: collapse; margin: 1em 0 1.6em; font-size: 0.95rem; }
.prose th, .prose td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--line); }
.prose th { color: var(--text); font-weight: 900; }
.prose code { padding: 1px 6px; border-radius: 6px; background: rgba(255, 255, 255, 0.08); font-size: 0.9em; }
.callout { margin: 1.4em 0; padding: 18px 20px; border-radius: 16px; background: rgba(61, 219, 196, 0.08); box-shadow: inset 0 0 0 1px rgba(61, 219, 196, 0.25); color: #d4f6f0; }
.diagram { display: grid; grid-template-columns: minmax(0, 300px) 1fr; gap: 24px; align-items: center; margin: 1.2em 0 1.8em; }
@media (max-width: 620px) { .diagram { grid-template-columns: 1fr; } }
.diagram .board { max-width: 300px; padding: 2.6%; border-radius: 12px; }
.diagram figcaption { color: var(--muted); font-size: 0.95rem; }

/* ---------------------------------------------------------------- scroll reveal (only when JS runs) */
.js .reveal { opacity: 0; transform: translateY(28px); transition: opacity 0.8s cubic-bezier(.2, .8, .2, 1), transform 0.8s cubic-bezier(.2, .8, .2, 1); transition-delay: var(--d, 0s); }
.js .reveal.in { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.001s !important; animation-iteration-count: 1 !important; transition-duration: 0.001s !important; scroll-behavior: auto !important; }
  .js .reveal { opacity: 1; transform: none; }
}