/* AI Fest 2026 — shared HUD design system (matches the RUAS AI Club poster palette) */
@import url('https://fonts.googleapis.com/css2?family=Orbitron:wght@500;700;900&family=Rajdhani:wght@500;600;700&family=JetBrains+Mono:wght@500;700&display=swap');

:root {
  --bg: #07041a; --bg2: #0d0828; --panel: rgba(22, 15, 54, .72); --panel2: rgba(34, 24, 78, .6);
  --line: rgba(154, 92, 255, .28); --line2: rgba(154, 92, 255, .55);
  --ink: #f4f1ff; --dim: #aaa3d0; --mute: #6f6899;
  --vio: #9a5cff; --blue: #3fa9ff; --grn: #2ee6b6; --org: #ff9a2e; --gold: #ffc857; --bad: #ff4d6d;
  --acc: var(--vio); --acc-ink: #0b0620;
  --display: 'Orbitron', 'Eurostile', 'Arial Black', sans-serif;
  --body: 'Rajdhani', 'Segoe UI', system-ui, sans-serif;
  --mono: 'JetBrains Mono', ui-monospace, Menlo, monospace;
  --r: 14px;
}
body[data-theme='auction'] { --acc: var(--org); }
body[data-theme='arena'] { --acc: var(--blue); }

* { box-sizing: border-box; margin: 0; padding: 0; }
html { -webkit-text-size-adjust: 100%; }
body {
  min-height: 100vh; background: var(--bg); color: var(--ink);
  font: 600 17px/1.45 var(--body); letter-spacing: .2px; overflow-x: hidden;
}
body::before { /* glow + grid */
  content: ''; position: fixed; inset: 0; z-index: -2; pointer-events: none;
  background:
    radial-gradient(900px 600px at 12% -10%, color-mix(in srgb, var(--vio) 34%, transparent), transparent 65%),
    radial-gradient(800px 560px at 100% 8%, color-mix(in srgb, var(--acc) 22%, transparent), transparent 62%),
    radial-gradient(900px 500px at 50% 115%, color-mix(in srgb, var(--blue) 18%, transparent), transparent 65%),
    linear-gradient(180deg, #0b0624, var(--bg) 55%, #04020e);
}
body::after {
  content: ''; position: fixed; inset: 0; z-index: -1; pointer-events: none; opacity: .5;
  background-image: linear-gradient(rgba(154, 92, 255, .07) 1px, transparent 1px), linear-gradient(90deg, rgba(154, 92, 255, .07) 1px, transparent 1px);
  background-size: 44px 44px;
  -webkit-mask-image: radial-gradient(ellipse at 50% 30%, #000 20%, transparent 80%); mask-image: radial-gradient(ellipse at 50% 30%, #000 20%, transparent 80%);
}
a { color: inherit; }
h1, h2, h3, .display { font-family: var(--display); letter-spacing: 2px; text-transform: uppercase; line-height: 1.1; }
.mono { font-family: var(--mono); font-variant-numeric: tabular-nums; letter-spacing: 0; }
.dim { color: var(--dim); } .acc { color: var(--acc); } .ok { color: var(--grn); } .bad { color: var(--bad); } .gold { color: var(--gold); }
.hide { display: none !important; }
.eyebrow { font: 700 12px var(--display); letter-spacing: 4px; color: var(--acc); text-transform: uppercase; }

.wrap { max-width: 1320px; margin: 0 auto; padding: 0 20px 60px; }
.topbar {
  display: flex; align-items: center; gap: 16px; padding: 14px 20px; position: sticky; top: 0; z-index: 20;
  background: rgba(7, 4, 26, .82); backdrop-filter: blur(14px); border-bottom: 1px solid var(--line);
}
.topbar img { height: 34px; }
.topbar .brand { font: 900 17px var(--display); letter-spacing: 3px; text-transform: uppercase; }
.topbar .brand small { display: block; font: 600 12px var(--body); letter-spacing: 2px; color: var(--dim); }
.topbar .grow { flex: 1; }

.panel {
  position: relative; background: var(--panel); border: 1px solid var(--line); border-radius: var(--r);
  padding: 20px; backdrop-filter: blur(10px);
}
.panel.hud::before, .panel.hud::after {
  content: ''; position: absolute; width: 18px; height: 18px; border: 2px solid var(--acc); pointer-events: none;
}
.panel.hud::before { top: -1px; left: -1px; border-right: 0; border-bottom: 0; border-top-left-radius: var(--r); }
.panel.hud::after { bottom: -1px; right: -1px; border-left: 0; border-top: 0; border-bottom-right-radius: var(--r); }
.panel > h3 { font-size: 13px; letter-spacing: 3px; color: var(--dim); margin-bottom: 14px; }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px; cursor: pointer; user-select: none;
  font: 700 14px var(--display); letter-spacing: 2px; text-transform: uppercase; text-decoration: none;
  color: var(--ink); background: var(--panel2); border: 1px solid var(--line2); border-radius: 10px; padding: 11px 18px;
  transition: transform .08s, box-shadow .15s, background .15s, border-color .15s;
}
.btn:hover { border-color: var(--acc); box-shadow: 0 0 18px color-mix(in srgb, var(--acc) 35%, transparent); }
.btn:active { transform: translateY(1px); }
.btn:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible { outline: 2px solid var(--acc); outline-offset: 2px; }
.btn.primary { background: linear-gradient(180deg, color-mix(in srgb, var(--acc) 100%, #fff 0%), color-mix(in srgb, var(--acc) 72%, #000)); color: var(--acc-ink); border-color: transparent; box-shadow: 0 0 24px color-mix(in srgb, var(--acc) 45%, transparent); }
.btn.good { background: linear-gradient(180deg, var(--grn), #12a98a); color: #04201a; border-color: transparent; }
.btn.danger { border-color: color-mix(in srgb, var(--bad) 60%, transparent); color: #ffb3c0; }
.btn.ghost { background: transparent; }
.btn.sm { padding: 7px 12px; font-size: 11px; letter-spacing: 1.5px; border-radius: 8px; }
.btn.xl { padding: 18px 26px; font-size: 17px; width: 100%; }
.btn[disabled] { opacity: .4; pointer-events: none; }

label.f { display: block; font: 700 11px var(--display); letter-spacing: 2px; color: var(--dim); text-transform: uppercase; margin-bottom: 6px; }
input, select, textarea {
  width: 100%; font: 600 17px var(--body); color: var(--ink); background: rgba(6, 3, 22, .7);
  border: 1px solid var(--line2); border-radius: 10px; padding: 10px 12px;
}
input[type='checkbox'] { width: 20px; height: 20px; accent-color: var(--acc); }
textarea { resize: vertical; min-height: 76px; }
select option { background: #120b30; }
::placeholder { color: var(--mute); }

.chip {
  display: inline-flex; align-items: center; gap: 6px; font: 700 11px var(--display); letter-spacing: 1.5px; text-transform: uppercase;
  padding: 4px 10px; border-radius: 999px; border: 1px solid var(--line2); color: var(--dim); white-space: nowrap;
}
.chip.acc { border-color: var(--acc); color: var(--acc); }
.chip.ok { border-color: var(--grn); color: var(--grn); }
.chip.bad { border-color: var(--bad); color: var(--bad); }
.chip.gold { border-color: var(--gold); color: var(--gold); }
.dot { width: 8px; height: 8px; border-radius: 50%; background: currentColor; box-shadow: 0 0 10px currentColor; }
.dot.live { animation: pulse 1.4s infinite; }
@keyframes pulse { 50% { opacity: .35; } }

.tabs { display: flex; gap: 6px; flex-wrap: wrap; }
.tabs button {
  font: 700 12px var(--display); letter-spacing: 2px; text-transform: uppercase; color: var(--dim); cursor: pointer;
  background: transparent; border: 1px solid transparent; border-radius: 9px; padding: 9px 14px;
}
.tabs button.on { color: var(--ink); border-color: var(--acc); background: color-mix(in srgb, var(--acc) 14%, transparent); }

table.grid { width: 100%; border-collapse: collapse; }
table.grid th { font: 700 11px var(--display); letter-spacing: 2px; color: var(--dim); text-transform: uppercase; text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--line2); white-space: nowrap; }
table.grid td { padding: 8px 10px; border-bottom: 1px solid var(--line); vertical-align: middle; }
table.grid tr:hover td { background: rgba(154, 92, 255, .06); }
table.grid .num { text-align: right; font-family: var(--mono); font-variant-numeric: tabular-nums; }
.scroll-x { overflow-x: auto; }

.row { display: flex; gap: 12px; align-items: center; flex-wrap: wrap; }
.stack > * + * { margin-top: 14px; }
.cols { display: grid; gap: 18px; }
@media (min-width: 900px) { .cols.c2 { grid-template-columns: 1fr 1fr; } .cols.c3 { grid-template-columns: repeat(3, 1fr); } }

#toasts { position: fixed; left: 50%; bottom: 22px; transform: translateX(-50%); z-index: 99; display: grid; gap: 8px; width: min(92vw, 460px); }
.toast { background: #1a1140; border: 1px solid var(--line2); border-left: 4px solid var(--acc); border-radius: 10px; padding: 12px 16px; box-shadow: 0 12px 40px rgba(0, 0, 0, .5); animation: rise .2s; }
.toast.err { border-left-color: var(--bad); }
.toast.good { border-left-color: var(--grn); }
@keyframes rise { from { opacity: 0; transform: translateY(10px); } }

.gate { min-height: 100vh; display: grid; place-items: center; padding: 20px; }
.gate .panel { width: min(100%, 420px); text-align: center; padding: 32px 26px; }
.gate img { height: 70px; margin-bottom: 14px; }
.gate h1 { font-size: 26px; margin: 6px 0 4px; }
.gate input { text-align: center; font: 700 20px var(--mono); letter-spacing: 1px; margin: 10px 0 0; }
.gate input.pin { font-size: 26px; letter-spacing: 8px; }
.gate label.f { margin: 16px 0 0; text-align: left; }
.gate .btn.xl { margin-top: 18px; }
.gate select { margin-top: 18px; text-align: center; }

.title-glow { background: linear-gradient(180deg, #fff, color-mix(in srgb, var(--acc) 85%, #fff) 55%, var(--acc)); -webkit-background-clip: text; background-clip: text; color: transparent; filter: drop-shadow(0 0 22px color-mix(in srgb, var(--acc) 55%, transparent)); }

@media (prefers-reduced-motion: reduce) { *, *::before, *::after { animation: none !important; transition: none !important; } }
@media print {
  body { background: #fff; color: #000; } body::before, body::after, .topbar, .no-print, #toasts { display: none !important; }
  .panel { background: #fff; border-color: #999; backdrop-filter: none; } table.grid th, .dim { color: #333; } table.grid td, table.grid th { border-color: #bbb; }
}

/* long-form guide pages */
.guide { max-width: 980px; margin: 0 auto; padding: 0 20px 80px; }
.guide .hero { text-align: center; padding: 44px 0 26px; }
.guide .hero h1 { font-size: clamp(34px, 7vw, 68px); font-weight: 900; letter-spacing: 5px; margin: 8px 0; }
.guide .hero p { color: var(--dim); font-size: 20px; }
.guide nav { display: flex; gap: 8px; flex-wrap: wrap; justify-content: center; margin: 18px 0 8px; }
.guide section { margin-top: 38px; scroll-margin-top: 20px; }
.guide h2 { font-size: 22px; font-weight: 900; margin-bottom: 14px; display: flex; gap: 12px; align-items: center; }
.guide h2::before { content: ''; width: 26px; height: 3px; background: var(--acc); box-shadow: 0 0 12px var(--acc); }
.guide p, .guide li { font-size: 18px; }
.guide ul, .guide ol { padding-left: 22px; display: grid; gap: 8px; }
.guide .steps { list-style: none; padding: 0; counter-reset: s; display: grid; gap: 12px; }
.guide .steps li { counter-increment: s; display: grid; grid-template-columns: 46px 1fr; gap: 14px; align-items: start; padding: 14px 16px; border: 1px solid var(--line); border-radius: 12px; background: var(--panel); }
.guide .steps li::before { content: counter(s, decimal-leading-zero); font: 900 20px var(--display); color: var(--acc); }
.guide .steps b { display: block; }
.guide .steps span { color: var(--dim); }
.guide .tiles { display: grid; gap: 14px; grid-template-columns: repeat(auto-fit, minmax(210px, 1fr)); }
.guide .tile { padding: 18px; }
.guide .tile .k { font: 900 13px var(--display); letter-spacing: 3px; color: var(--c, var(--acc)); }
.guide .tile h3 { font-size: 19px; margin: 6px 0 8px; color: var(--ink); letter-spacing: 1.5px; }
.guide .tile p { color: var(--dim); font-size: 16.5px; line-height: 1.4; }
.guide .tile .pay { display: inline-block; margin-top: 10px; font: 700 12.5px var(--mono); white-space: nowrap; color: var(--c, var(--acc)); border: 1px solid currentColor; border-radius: 8px; padding: 4px 8px; }
.guide .note { border-left: 4px solid var(--acc); background: color-mix(in srgb, var(--acc) 9%, transparent); border-radius: 0 12px 12px 0; padding: 14px 16px; margin-top: 14px; }
.guide .cta { display: flex; gap: 12px; flex-wrap: wrap; justify-content: center; margin-top: 40px; }
@media print { .guide nav, .guide .cta { display: none; } .guide section { break-inside: avoid; } .guide .steps li, .guide .tile { background: #fff; } .title-glow { color: #000; -webkit-text-fill-color: #000; filter: none; } }