:root {
  --glass: rgba(46, 45, 42, .62);
  --glass-strong: rgba(38, 38, 36, .78);
  --glass2: rgba(255, 255, 255, .09);
  --glass3: rgba(255, 255, 255, .14);
  --line: rgba(255, 255, 255, .1);
  --ink: #f2f4f7;
  --ink2: rgba(255, 255, 255, .72);
  --ink3: rgba(255, 255, 255, .5);
  --green: #00e5a0;
  --blue: #477fec;
  --blue-soft: rgba(71, 127, 236, .18);
  --shadow: 0 26px 80px -30px rgba(4, 6, 10, .72), inset 0 1px rgba(255, 255, 255, .08);
  --ease: cubic-bezier(.23, 1, .32, 1);
  --spring: cubic-bezier(.34, 1.45, .5, 1);
}

* { box-sizing: border-box; }
html { min-height: 100%; background: #17191e; }
body {
  min-height: 100vh; margin: 0; color: var(--ink); overflow-x: hidden;
  font-family: "Golos Text", system-ui, sans-serif; -webkit-font-smoothing: antialiased;
}
button, a { -webkit-tap-highlight-color: transparent; }
button { font: inherit; color: inherit; }
a { color: inherit; text-decoration: none; }
.disp { font-family: "Unbounded", sans-serif; }
.mono { font-family: "JetBrains Mono", monospace; }

.wall {
  position: fixed; inset: 0; z-index: -2; background: #1a1c22 url("assets/bg.jpg") center/cover no-repeat;
}
.wall::after {
  content: ""; position: absolute; inset: 0;
  background: radial-gradient(circle at 50% 45%, rgba(8, 16, 28, .08), rgba(7, 9, 14, .58)), linear-gradient(180deg, rgba(15, 17, 23, .16), rgba(15, 17, 23, .54));
}
.glass {
  background: var(--glass); border: 1px solid var(--line); box-shadow: var(--shadow);
  backdrop-filter: blur(28px) saturate(1.25) brightness(1.04);
  -webkit-backdrop-filter: blur(28px) saturate(1.25) brightness(1.04);
}
.pill { border-radius: 999px; }

.topbar {
  width: min(1180px, calc(100% - 32px)); margin: 16px auto 0; position: relative; z-index: 20;
  display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; gap: 12px;
}
.brand, .title-pill, .icon-button { min-height: 50px; }
.brand { justify-self: start; display: inline-flex; align-items: center; gap: 10px; padding: 7px 16px 7px 8px; }
.brand img { width: 36px; height: 36px; border-radius: 50%; }
.brand-name { font-size: 13px; font-weight: 700; letter-spacing: -.03em; }
.brand-name em, footer em { color: var(--green); font-style: normal; }
.title-pill { display: inline-flex; align-items: center; gap: 10px; padding: 0 18px; color: var(--ink2); font-size: 13px; }
.radial-mark { position: relative; width: 22px; height: 22px; display: block; }
.radial-mark i { position: absolute; inset: 2px; border: 1.5px solid var(--green); border-left-color: transparent; border-radius: 50%; }
.radial-mark i:nth-child(2) { inset: 6px; opacity: .75; }
.radial-mark i:nth-child(3) { inset: 10px; background: var(--green); border: none; }
.icon-button { justify-self: end; width: 50px; border: 0; display: grid; place-items: center; cursor: pointer; }
.icon-button svg, .dialog-close svg { width: 22px; fill: none; stroke: currentColor; stroke-width: 1.7; stroke-linecap: round; stroke-linejoin: round; }

.game-shell { width: min(1180px, calc(100% - 32px)); margin: 18px auto 0; }
.game-card { border-radius: 28px; padding: clamp(22px, 4vw, 42px); }
.game-copy { display: flex; align-items: end; justify-content: space-between; gap: 28px; margin-bottom: 20px; }
.eyebrow { color: var(--green); font-size: 10px; letter-spacing: .16em; }
h1 { margin: 11px 0 0; font-size: clamp(24px, 3vw, 36px); line-height: 1.08; letter-spacing: -.045em; }
h1 em { color: var(--green); font-style: normal; }
.game-copy > p { width: 390px; margin: 0; color: var(--ink2); font-size: 14px; line-height: 1.65; }

.play-layout { display: grid; grid-template-columns: minmax(380px, 1fr) 340px; gap: 28px; align-items: center; }
.board-wrap { position: relative; display: grid; place-items: center; min-width: 0; }
.board { width: min(100%, 640px); height: auto; overflow: hidden; border-radius: 18px; cursor: grab; touch-action: none; user-select: none; filter: drop-shadow(0 22px 28px rgba(4, 6, 10, .28)); }
.puzzle-field { fill: #e9f1d7; }
.board:active { cursor: grabbing; }
.ring-track { fill: none; stroke: #34422f; stroke-width: 2.6; opacity: .78; transition: stroke-width 150ms; }
.ring-track.selected { stroke: #223627; stroke-width: 4.4; opacity: 1; }
.point { stroke: #293c2c; stroke-width: 3.2; }
.gesture-note { padding: 12px 0 4px; color: var(--ink2); font-size: 11px; text-align: center; }

.control-panel { display: grid; gap: 12px; }
.inner-panel { background: var(--glass2); border: 1px solid var(--line); border-radius: 18px; padding: 16px; }
.status-row { display: flex; align-items: center; gap: 9px; font-size: 13px; font-weight: 600; }
.status-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--blue); box-shadow: 0 0 12px var(--blue); }
.status-dot.won { background: var(--green); box-shadow: 0 0 14px var(--green); }
.metrics { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-top: 15px; }
.metrics > div { background: rgba(255, 255, 255, .07); border-radius: 12px; padding: 10px 12px; }
.metrics span { display: block; color: var(--ink3); font-size: 10px; margin-bottom: 3px; }
.metrics strong { font-family: "JetBrains Mono", monospace; font-size: 18px; font-variant-numeric: tabular-nums; }
.panel-label { display: flex; justify-content: space-between; align-items: center; color: var(--ink2); font-size: 11px; }
.panel-label b { width: 26px; height: 26px; display: grid; place-items: center; border-radius: 50%; background: var(--blue); color: #fff; }
.ring-tabs { display: grid; gap: 9px; margin: 14px 0; }
.ring-row { display: grid; grid-template-columns: repeat(3, 1fr); gap: 5px; }
.ring-row-label { grid-column: 1 / -1; font-size: 10px; color: var(--ink2); }
.ring-tab { min-height: 44px; padding: 4px; border: 1px solid transparent; border-radius: 10px; background: rgba(255,255,255,.07); cursor: pointer; font-size: 10px; }
.ring-tab:hover { background: var(--glass3); }
.ring-tab[aria-pressed="true"] { background: var(--blue-soft); border-color: rgba(118,159,244,.58); color: #cfddfa; }
button:focus-visible, a:focus-visible { outline: 2px solid #b8cdf9; outline-offset: 3px; }
button:disabled { opacity: .4; cursor: default; }
.turn-buttons { display: grid; grid-template-columns: 1fr 1.16fr; gap: 7px; }
.turn-button { min-height: 48px; border: 1px solid var(--line); border-radius: 12px; background: rgba(255, 255, 255, .07); display: flex; align-items: center; justify-content: center; gap: 7px; cursor: pointer; font-size: 11px; font-weight: 600; transition: transform 150ms, background 150ms, filter 150ms; }
.turn-button svg { width: 18px; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
.turn-button:hover { background: var(--glass3); }
.turn-button.primary { background: var(--blue); border-color: transparent; box-shadow: 0 10px 24px -12px rgba(71, 127, 236, .8); }
.turn-button.primary:hover { filter: brightness(1.08); }
.turn-button:active { transform: scale(.97); }

.actions { display: grid; grid-template-columns: 1fr 1fr; gap: 7px; }
.action-button { min-height: 46px; border-radius: 12px; border: 1px solid var(--line); background: var(--glass2); cursor: pointer; font-size: 12px; font-weight: 600; transition: background 150ms, transform 150ms, filter 150ms; }
.action-button:hover { background: var(--glass3); }
.action-button:active { transform: scale(.97); }
.action-button:disabled { opacity: .38; cursor: default; }
.action-button.blue { color: #fff; background: var(--blue); border-color: transparent; box-shadow: 0 10px 26px -10px rgba(71, 127, 236, .6); }
.action-button.blue:hover { filter: brightness(1.08); background: var(--blue); }
.action-button.wide { width: 100%; }
.keyboard-note { margin: 2px 0 0; text-align: center; color: var(--ink3); font-size: 8px; letter-spacing: .09em; }

footer { width: min(1180px, calc(100% - 32px)); margin: 0 auto; padding: 18px 6px 24px; display: flex; justify-content: space-between; color: var(--ink3); font-size: 11px; }
footer b { color: var(--ink2); }

.rules-dialog { width: min(470px, calc(100% - 28px)); color: var(--ink); border-radius: 24px; padding: 30px; }
.rules-dialog::backdrop { background: rgba(8, 10, 14, .62); backdrop-filter: blur(7px); -webkit-backdrop-filter: blur(7px); }
.rules-dialog[open] { animation: dialogIn 300ms var(--spring); }
.rules-dialog h2 { margin: 9px 0 22px; font-size: 27px; line-height: 1.2; }
.rules-dialog ol { list-style: none; padding: 0; display: grid; gap: 16px; counter-reset: steps; }
.rules-dialog li { position: relative; padding-left: 42px; counter-increment: steps; }
.rules-dialog li::before { content: counter(steps); position: absolute; left: 0; top: 0; width: 28px; height: 28px; display: grid; place-items: center; border-radius: 50%; color: #bad0ff; background: var(--blue-soft); font: 600 11px "JetBrains Mono", monospace; }
.rules-dialog li b, .rules-dialog li span { display: block; }
.rules-dialog li b { font-size: 13px; margin-bottom: 3px; }
.rules-dialog li span { color: var(--ink2); font-size: 12px; line-height: 1.5; }
.rules-dialog .wide { margin-top: 22px; }
.dialog-close { position: absolute; right: 18px; top: 18px; width: 44px; height: 44px; border: 0; border-radius: 50%; display: grid; place-items: center; background: var(--glass2); cursor: pointer; }

.toast { position: fixed; z-index: 80; left: 50%; bottom: 28px; translate: -50% 18px; opacity: 0; pointer-events: none; border-radius: 999px; padding: 11px 17px; color: var(--ink); font-size: 12px; transition: opacity 220ms, translate 220ms var(--ease); }
.toast.show { opacity: 1; translate: -50% 0; }

.rise { animation: rise 450ms var(--ease) both; }
@keyframes rise { from { opacity: 0; transform: translateY(14px) scale(.99); } to { opacity: 1; transform: none; } }
@keyframes dialogIn { from { opacity: 0; transform: scale(.92); } to { opacity: 1; transform: scale(1); } }

@media (max-width: 850px) {
  .play-layout { grid-template-columns: 1fr; gap: 12px; }
  .game-copy { align-items: start; }
  .game-copy > p { width: 300px; }
  .control-panel { grid-template-columns: 1fr; align-items: stretch; }
  .actions { align-content: stretch; }
  .keyboard-note { grid-column: 1 / -1; }
}
@media (max-width: 620px) {
  .topbar { grid-template-columns: 1fr auto; }
  .title-pill { grid-row: 2; grid-column: 1 / -1; justify-self: center; min-height: 42px; }
  .brand, .icon-button { min-height: 46px; }
  .game-shell { margin-top: 12px; }
  .game-card { border-radius: 22px; padding: 18px 14px; }
  .game-copy { display: block; margin: 4px 6px 8px; }
  .game-copy > p { width: auto; margin-top: 12px; font-size: 12.5px; }
  h1 { font-size: clamp(23px, 6.8vw, 32px); }
  .board { width: 100%; margin-top: 10px; }
  .gesture-note { font-size: 10px; }
  .control-panel { grid-template-columns: 1fr; }
  .status-card { display: grid; gap: 12px; }
  .metrics { margin: 0; }
  .inner-panel { padding: 13px; }
  .ring-tabs { gap: 9px; }
  .ring-tab { min-width: 0; min-height: 44px; }
  .keyboard-note { display: none; }
  footer { padding-bottom: calc(22px + env(safe-area-inset-bottom)); }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
}
@media (prefers-reduced-transparency: reduce) {
  .glass { background: rgba(34, 35, 37, .96); backdrop-filter: none; -webkit-backdrop-filter: none; }
}
@media (prefers-contrast: more) {
  .glass { background: rgba(28, 29, 31, .97); border-color: rgba(255, 255, 255, .48); }
}
@supports not ((backdrop-filter: blur(1px)) or (-webkit-backdrop-filter: blur(1px))) {
  .glass { background: rgba(34, 35, 37, .94); }
}