/*
 * COILS — jungle DOM UI theme. Generated by tools/generate_svg_assets.mjs.
 * One original design system: jungle tokens (RE-6 §4.3), a Liquid-Glass material
 * with opaque fallbacks (§1.3), and first-class accessibility modes — reduced
 * motion / transparency, high contrast, safe areas (§11). JS sets dynamic state
 * only; visual design lives here. Class names are stable so the gameplay DOM
 * overlays (HUD, leaderboard, death/result, connection) keep working.
 */
:root {
  /* Palette — RE-6 §4.3 */
  --ink-strong: #10251F; --ink-soft: #35574D;
  --surface-cream: #FFF8E8;
  --jungle-deep: #123E35; --jungle-base: #2E7556; --moss-light: #79B85A;
  --action-lime: #A8F05A; --action-cyan: #4DE7DD; --reward-gold: #FFD45A;
  --danger-coral: #FF5E57;
  --lava-orange: #FF7A1A; --lava-yellow: #FFD43B; --lava-crust: #3B2024;
  --focus-ring: #E9FF8D;

  /* Text on dark jungle / glass material */
  --text: #F2FBEA; --text-dim: #B7D2BE;

  /* Liquid-Glass material (translucent dark leaf) + warm modal variant */
  --glass-fill: linear-gradient(180deg, rgba(18,62,53,.72), rgba(12,38,32,.84));
  --glass-fill-cream: linear-gradient(180deg, rgba(255,248,232,.97), rgba(244,234,209,.97));
  --glass-blur: blur(18px) saturate(140%);
  --glass-border: 1px solid rgba(233,255,141,.16);
  --glass-hilite: inset 0 1px 0 rgba(255,255,255,.20);
  --glass-shadow: 0 14px 38px rgba(5,18,14,.46);

  /* Opaque fallbacks (reduced transparency / no backdrop-filter) */
  --solid-panel: #103a31; --solid-cream: #FFF8E8;

  /* Type — system rounded stack (RE-6 §4.4); no shipped web fonts */
  --font: ui-rounded, "SF Pro Rounded", "SF Pro Display", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --fs-xs: .75rem; --fs-sm: .9rem; --fs-md: 1.05rem; --fs-lg: 1.4rem; --fs-xl: 2.1rem; --fs-2xl: 2.8rem;

  /* Spacing / radius / shadow / motion */
  --sp-1: .35rem; --sp-2: .65rem; --sp-3: 1rem; --sp-4: 1.5rem; --sp-5: 2rem;
  --r-sm: .7rem; --r-md: 1.1rem; --r-lg: 1.6rem; --r-xl: 2.2rem; --r-pill: 999px;
  --shadow-1: 0 .4rem 1rem rgba(5,18,14,.35);
  --shadow-2: 0 .9rem 1.9rem rgba(5,18,14,.46);
  --ring: 0 0 0 .2rem var(--jungle-deep), 0 0 0 .38rem var(--focus-ring);
  --t-instant: .1s; --t-quick: .2s; --t-standard: .3s;
  --ease-spring: cubic-bezier(.2,.9,.3,1.3);
  --ease-out: cubic-bezier(.2,.7,.3,1);

  /* Legacy aliases — the gameplay HUD/death/leaderboard classes still reference
     --su-*; mapping them onto jungle tokens recolours those surfaces to the new
     identity until they are individually rebuilt in a later stage. */
  --su-ink: var(--ink-strong);
  --su-text: var(--text); --su-text-dim: var(--text-dim);
  --su-cyan: var(--action-cyan); --su-primary: var(--action-lime); --su-primary-deep: #6fbf3a;
  --su-danger: var(--danger-coral); --su-reward: var(--reward-gold); --su-cream: var(--surface-cream);
  --su-surface: rgba(12,38,32,.76); --su-surface-solid: var(--solid-panel);
  --su-panel-top: #16493d; --su-panel-bottom: #0c2c25;
  --su-magnet: var(--action-cyan); --su-growth: #7FE06A; --su-speed: var(--reward-gold);
  --su-shield: #8af0e6; --su-weight: #9fb6a4; --su-vision: #b6e07a;
  --su-font: var(--font);
  --su-fs-xs: var(--fs-xs); --su-fs-sm: var(--fs-sm); --su-fs-md: var(--fs-md); --su-fs-lg: var(--fs-lg); --su-fs-xl: var(--fs-xl);
  --su-sp-1: var(--sp-1); --su-sp-2: var(--sp-2); --su-sp-3: var(--sp-3); --su-sp-4: var(--sp-4);
  --su-r-sm: var(--r-sm); --su-r-md: var(--r-md); --su-r-lg: var(--r-lg); --su-r-pill: var(--r-pill);
  --su-shadow-1: var(--shadow-1); --su-shadow-2: var(--shadow-2);
  --su-ring: 0 0 0 .18rem rgba(77,231,221,.6);
}

/* Base / utilities ------------------------------------------------------- */
#hud { font-family: var(--font); }
.num { font-variant-numeric: tabular-nums; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0; }

/* Liquid-Glass material -------------------------------------------------- */
.lg-glass {
  background: var(--glass-fill);
  -webkit-backdrop-filter: var(--glass-blur); backdrop-filter: var(--glass-blur);
  border: var(--glass-border);
  box-shadow: var(--glass-shadow), var(--glass-hilite);
  border-radius: var(--r-lg);
  color: var(--text);
}
.lg-glass--cream {
  background: var(--glass-fill-cream); color: var(--ink-strong);
  border: 1px solid rgba(16,37,31,.14);
  box-shadow: var(--shadow-2), inset 0 1px 0 rgba(255,255,255,.65);
}
.lg-glass.is-interactive { transition: transform var(--t-quick) var(--ease-spring), box-shadow var(--t-quick) var(--ease-out); }
.lg-glass.is-interactive:active { transform: scale(.985); }

/* Buttons ---------------------------------------------------------------- */
.snake-button {
  display: inline-flex; align-items: center; justify-content: center; gap: .5rem;
  min-height: 3.5rem; padding: 0 1.6rem;
  border: 0; border-radius: var(--r-pill);
  color: var(--ink-strong);
  background: linear-gradient(180deg, #C8FB7E, var(--action-lime) 48%, #7FCB3E);
  box-shadow: 0 .5rem 0 #5fa72f, var(--shadow-1), inset 0 .12rem 0 rgba(255,255,255,.5);
  font: 800 var(--fs-lg) / 1 var(--font); letter-spacing: .01em;
  cursor: pointer; touch-action: manipulation; -webkit-tap-highlight-color: transparent;
  transition: transform var(--t-instant) var(--ease-out), box-shadow var(--t-instant) var(--ease-out), filter var(--t-quick);
}
.snake-button:hover { filter: brightness(1.05); }
.snake-button:active { transform: translateY(.32rem); box-shadow: 0 .12rem 0 #5fa72f, inset 0 .12rem .3rem rgba(0,0,0,.18); }
.snake-button:focus-visible { outline: none; box-shadow: var(--ring), 0 .5rem 0 #5fa72f; }
.snake-button[disabled], .snake-button.is-loading { filter: grayscale(.5) brightness(.92); box-shadow: var(--shadow-1); transform: none; cursor: not-allowed; }
.snake-button--block { width: 100%; }
.snake-button--secondary {
  color: var(--text);
  background: var(--glass-fill);
  -webkit-backdrop-filter: var(--glass-blur); backdrop-filter: var(--glass-blur);
  border: 1px solid rgba(77,231,221,.32);
  box-shadow: var(--shadow-1), var(--glass-hilite);
}
.snake-button--secondary:active { transform: translateY(.12rem); box-shadow: var(--shadow-1); }
.snake-button--ghost { color: var(--text); background: rgba(12,38,32,.5); box-shadow: var(--shadow-1); }
.snake-button--danger { color: #2a0606; background: linear-gradient(180deg, #ff8a85, var(--danger-coral)); box-shadow: 0 .5rem 0 #b3413c, var(--shadow-1); }
.snake-button--danger:active { box-shadow: 0 .12rem 0 #b3413c; }

.snake-iconbtn {
  width: 3rem; height: 3rem; flex: 0 0 auto;
  display: inline-flex; align-items: center; justify-content: center;
  border-radius: var(--r-pill); border: 1px solid rgba(233,255,141,.2);
  background: var(--glass-fill);
  -webkit-backdrop-filter: var(--glass-blur); backdrop-filter: var(--glass-blur);
  color: var(--text); box-shadow: var(--shadow-1), var(--glass-hilite);
  cursor: pointer; font-size: 1.2rem; line-height: 1; -webkit-tap-highlight-color: transparent;
  transition: transform var(--t-instant) var(--ease-spring), filter var(--t-quick);
}
.snake-iconbtn:hover { filter: brightness(1.08); }
.snake-iconbtn:active { transform: scale(.92); }
.snake-iconbtn:focus-visible { outline: none; box-shadow: var(--ring); }

/* Inputs ----------------------------------------------------------------- */
.snake-field { display: flex; flex-direction: column; gap: var(--sp-1); text-align: left; }
.snake-field__label { display: flex; justify-content: space-between; align-items: baseline; font: 700 var(--fs-sm) / 1 var(--font); color: var(--text-dim); }
.snake-field__count { font-variant-numeric: tabular-nums; color: var(--text-dim); }
.snake-input {
  width: 100%; min-height: 3.4rem; box-sizing: border-box;
  border: 1px solid rgba(233,255,141,.18); border-radius: var(--r-md);
  background: rgba(7,24,20,.6); color: var(--text);
  padding: 0 1.1rem; font: 700 var(--fs-md) / 1 var(--font);
  box-shadow: inset 0 .12rem .4rem rgba(0,0,0,.3);
  transition: box-shadow var(--t-quick), border-color var(--t-quick);
}
.snake-input::placeholder { color: var(--text-dim); }
.snake-input:focus { outline: none; border-color: var(--action-cyan); box-shadow: var(--ring), inset 0 .12rem .4rem rgba(0,0,0,.3); }
.snake-input.is-error { border-color: var(--danger-coral); box-shadow: 0 0 0 .16rem rgba(255,94,87,.5); }
.snake-error { min-height: 1.2rem; color: #ffd9d6; font: 700 var(--fs-sm) / 1.2 var(--font); text-align: center; }

/* Panels + modals (dark jungle glass; keeps light death/settings text readable) */
.snake-panel {
  border: var(--glass-border); border-radius: var(--r-lg);
  background: var(--glass-fill);
  -webkit-backdrop-filter: var(--glass-blur); backdrop-filter: var(--glass-blur);
  box-shadow: var(--shadow-2), var(--glass-hilite); color: var(--text);
}
.snake-modal-backdrop {
  position: fixed; inset: 0; display: flex; align-items: center; justify-content: center;
  background: rgba(4,14,11,.6); padding: var(--sp-4); z-index: 50;
  /* #hud is pointer-events:none and the property inherits — a modal layer must
     re-enable input or every control inside it (toggles, sliders, Done) is dead
     and the whole screen reads as frozen. */
  pointer-events: auto;
}
.snake-modal {
  width: min(28rem, 94vw); padding: var(--sp-4);
  border: var(--glass-border); border-radius: var(--r-lg);
  background: var(--glass-fill);
  -webkit-backdrop-filter: var(--glass-blur); backdrop-filter: var(--glass-blur);
  box-shadow: var(--shadow-2), var(--glass-hilite); color: var(--text); text-align: center;
}
.snake-modal h2 { margin: 0 0 var(--sp-3); font: 800 var(--fs-xl) / 1 var(--font); }

/* Progress --------------------------------------------------------------- */
.snake-progress { width: 100%; height: .7rem; border-radius: var(--r-pill); background: rgba(0,0,0,.35); overflow: hidden; }
.snake-progress > i { display: block; height: 100%; width: 0; border-radius: inherit; background: linear-gradient(90deg, var(--moss-light), var(--action-lime)); transition: width var(--t-standard) var(--ease-out); }

/* Start page (RE-6 §5.2) ------------------------------------------------- */
.snake-start {
  position: fixed; inset: 0; pointer-events: none;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  gap: var(--sp-3); overflow-y: auto;
  padding: max(var(--sp-4), env(safe-area-inset-top)) max(var(--sp-3), env(safe-area-inset-right)) max(var(--sp-4), env(safe-area-inset-bottom)) max(var(--sp-3), env(safe-area-inset-left));
  font-family: var(--font);
}
.snake-start > * { pointer-events: auto; }
.snake-start__logo { width: min(64vw, 22rem); height: auto; filter: drop-shadow(0 .5rem 1rem rgba(5,18,14,.5)); }
.snake-card { width: min(26rem, 94vw); padding: var(--sp-4); display: flex; flex-direction: column; gap: var(--sp-3); box-sizing: border-box; }
.snake-card__title { margin: 0; text-align: center; font: 800 var(--fs-lg) / 1 var(--font); color: var(--text); }
.snake-card__hint { margin: 0; text-align: center; color: var(--text-dim); font: 600 var(--fs-sm) / 1.3 var(--font); }
.snake-card__row { display: flex; gap: var(--sp-2); align-items: stretch; }
.snake-card__row .snake-button { flex: 1; }

/* Selected-skin preview -------------------------------------------------- */
.snake-preview { display: flex; align-items: center; gap: var(--sp-3); padding: var(--sp-2) var(--sp-3); border-radius: var(--r-md); background: rgba(7,24,20,.4); }
.snake-preview__img { width: 4rem; height: 4rem; flex: 0 0 auto; }
.snake-preview__meta { display: flex; flex-direction: column; gap: .1rem; min-width: 0; }
.snake-preview__name { font: 800 var(--fs-md) / 1 var(--font); color: var(--text); }
.snake-preview__sub { font: 600 var(--fs-xs) / 1 var(--font); color: var(--text-dim); }

/* Skin rail (RE-6 §5.2) -------------------------------------------------- */
.snake-skinrail { display: flex; flex-direction: column; gap: var(--sp-1); }
.snake-skinrail__head { display: flex; align-items: center; justify-content: space-between; }
.snake-skinrail__head b { font: 800 var(--fs-sm) / 1 var(--font); color: var(--text); }
.snake-skinrail__all { background: none; border: 0; color: var(--action-cyan); font: 800 var(--fs-sm) / 1 var(--font); cursor: pointer; padding: .2rem .3rem; border-radius: var(--r-sm); }
.snake-skinrail__all:focus-visible { outline: none; box-shadow: var(--ring); }
.snake-skinrail__track {
  display: flex; gap: var(--sp-2); overflow-x: auto; padding: .3rem .1rem .6rem;
  scroll-snap-type: x proximity; -webkit-overflow-scrolling: touch; scrollbar-width: none;
}
.snake-skinrail__track::-webkit-scrollbar { display: none; }
.snake-skin {
  flex: 0 0 auto; width: 4.5rem; height: 4.5rem; scroll-snap-align: center; position: relative;
  display: flex; align-items: center; justify-content: center; padding: .4rem;
  border-radius: var(--r-md); border: 2px solid transparent; background: rgba(7,24,20,.4);
  cursor: pointer; -webkit-tap-highlight-color: transparent;
  transition: transform var(--t-quick) var(--ease-spring), border-color var(--t-quick), background var(--t-quick);
}
.snake-skin img { width: 100%; height: 100%; object-fit: contain; pointer-events: none; }
.snake-skin:hover { background: rgba(77,231,221,.12); }
.snake-skin:focus-visible { outline: none; box-shadow: var(--ring); }
.snake-skin.is-selected { border-color: var(--action-cyan); background: rgba(77,231,221,.16); transform: translateY(-.15rem); }
.snake-skin.is-selected::after {
  content: "\2713"; position: absolute; top: -.4rem; right: -.4rem;
  width: 1.25rem; height: 1.25rem; border-radius: 50%;
  background: var(--action-cyan); color: var(--ink-strong);
  font: 900 .8rem / 1.25rem var(--font); text-align: center; box-shadow: var(--shadow-1);
}

/* See-All gallery sheet (RE-6 §5.4) -------------------------------------- */
.snake-sheet-backdrop { position: fixed; inset: 0; display: flex; align-items: flex-end; justify-content: center; background: rgba(4,14,11,.55); z-index: 60; padding: env(safe-area-inset-top) 0 0; pointer-events: auto; }
.snake-sheet { width: min(46rem, 100%); max-height: 88vh; display: flex; flex-direction: column; padding: var(--sp-4); padding-bottom: max(var(--sp-4), env(safe-area-inset-bottom)); border-radius: var(--r-xl) var(--r-xl) 0 0; box-sizing: border-box; }
.snake-sheet__head { display: flex; align-items: center; justify-content: space-between; margin-bottom: var(--sp-3); }
.snake-sheet__head h2 { margin: 0; font: 800 var(--fs-lg) / 1 var(--font); color: var(--text); }
.snake-sheet__grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(5.5rem, 1fr)); gap: var(--sp-2); overflow-y: auto; padding: .2rem; }
@media (min-width: 700px) {
  .snake-sheet-backdrop { align-items: center; padding: var(--sp-4); }
  .snake-sheet { border-radius: var(--r-xl); }
}

/* Skin gallery cards ----------------------------------------------------- */
.snake-skingrid { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--sp-2); }
.snake-skincard {
  display: flex; flex-direction: column; align-items: center; gap: .25rem; padding: var(--sp-2);
  border: 2px solid transparent; border-radius: var(--r-md); background: rgba(7,24,20,.4);
  color: var(--text-dim); cursor: pointer;
  transition: transform var(--t-quick) var(--ease-spring), border-color var(--t-quick), background var(--t-quick);
}
.snake-skincard:hover { transform: translateY(-.12rem); background: rgba(77,231,221,.12); }
.snake-skincard:focus-visible { outline: none; box-shadow: var(--ring); }
.snake-skincard img { width: 3.4rem; height: 3.4rem; }
.snake-skincard__name { font: 700 var(--fs-xs) / 1 var(--font); }
.snake-skincard.is-selected { border-color: var(--action-cyan); background: rgba(77,231,221,.16); color: var(--text); }

/* Settings rows (RE-6 §5.6) ---------------------------------------------- */
.snake-settings { display: flex; flex-direction: column; text-align: left; margin: var(--sp-3) 0; }
.snake-setting { display: flex; align-items: center; justify-content: space-between; gap: var(--sp-3); padding: var(--sp-2) 0; border-top: 1px solid rgba(255,255,255,.07); }
.snake-setting:first-child { border-top: 0; }
.snake-setting__text { min-width: 0; }
.snake-setting__label { font: 700 var(--fs-sm) / 1.2 var(--font); color: var(--text); }
.snake-setting__desc { font: 600 var(--fs-xs) / 1.2 var(--font); color: var(--text-dim); }
.snake-toggle { position: relative; width: 3.2rem; height: 1.9rem; flex: 0 0 auto; border: 0; border-radius: var(--r-pill); background: rgba(7,24,20,.7); cursor: pointer; transition: background var(--t-quick); }
.snake-toggle::after { content: ""; position: absolute; top: .2rem; left: .2rem; width: 1.5rem; height: 1.5rem; border-radius: 50%; background: #cfe8d3; box-shadow: var(--shadow-1); transition: transform var(--t-quick) var(--ease-spring); }
.snake-toggle[aria-checked="true"] { background: var(--action-lime); }
.snake-toggle[aria-checked="true"]::after { transform: translateX(1.3rem); background: #fff; }
.snake-toggle:focus-visible { outline: none; box-shadow: var(--ring); }
.snake-slider { width: 9rem; flex: 0 0 auto; accent-color: var(--action-lime); }
.snake-seg { display: inline-flex; flex: 0 0 auto; border-radius: var(--r-pill); background: rgba(7,24,20,.6); padding: .2rem; gap: .2rem; }
.snake-seg button { border: 0; background: none; color: var(--text-dim); font: 800 var(--fs-xs) / 1 var(--font); padding: .4rem .7rem; border-radius: var(--r-pill); cursor: pointer; }
.snake-seg button.is-on { background: var(--action-cyan); color: var(--ink-strong); }
.snake-seg button:focus-visible { outline: none; box-shadow: var(--ring); }

/* Branded boot (RE-6 §5.1) ---------------------------------------------- */
.snake-boot { position: fixed; inset: 0; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: var(--sp-4); pointer-events: none; padding: var(--sp-4); font-family: var(--font); background: radial-gradient(circle at 50% 38%, #1d5a4c 0%, #103a31 46%, #0a241e 100%); }
.snake-boot__mark { width: min(40vw, 9rem); height: auto; animation: bootBreathe 3.2s var(--ease-out) infinite; }
@keyframes bootBreathe { 0%, 100% { transform: translateY(0) scale(1); } 50% { transform: translateY(-.3rem) scale(1.02); } }
.snake-boot__bar { width: min(72vw, 20rem); height: 1rem; border-radius: var(--r-pill); background: rgba(7,24,20,.6); box-shadow: inset 0 .12rem .3rem rgba(0,0,0,.35); overflow: hidden; }
.snake-boot__fill { height: 100%; width: 0%; border-radius: var(--r-pill); background: linear-gradient(90deg, var(--moss-light), var(--action-lime)); transition: width var(--t-standard) var(--ease-out); }
.snake-boot__status { font: 700 var(--fs-sm) / 1 var(--font); color: var(--text-dim); }

/* HUD score pill --------------------------------------------------------- */
.snake-hud-pill {
  display: inline-flex; align-items: center; gap: var(--su-sp-2);
  padding: .45rem 1.1rem; border-radius: var(--su-r-pill);
  background: var(--glass-fill);
  -webkit-backdrop-filter: var(--glass-blur); backdrop-filter: var(--glass-blur);
  color: var(--su-text); box-shadow: var(--su-shadow-1), var(--glass-hilite);
  font: 800 var(--su-fs-md) / 1 var(--su-font); font-variant-numeric: tabular-nums;
}
.snake-hud-pill b { color: var(--su-reward); }

/* Leaderboard ------------------------------------------------------------ */
.snake-leaderboard {
  border: 1px solid rgba(233,255,141,.16); border-radius: var(--su-r-md);
  background: var(--glass-fill);
  -webkit-backdrop-filter: var(--glass-blur); backdrop-filter: var(--glass-blur);
  color: var(--su-text); box-shadow: var(--su-shadow-1); overflow: hidden;
  font: 600 var(--su-fs-sm) / 1.3 var(--su-font);
}
.snake-leaderboard__title { padding: .4rem .7rem; background: rgba(77,231,221,.14); border-bottom: 1px solid rgba(77,231,221,.32); font-weight: 800; letter-spacing: .04em; }
.snake-leaderboard__row { display: flex; align-items: center; gap: .5rem; padding: .25rem .7rem; }
.snake-leaderboard__row.is-self { background: rgba(168,240,90,.18); color: #f3ffe7; font-weight: 800; }
.snake-leaderboard__rank { width: 1.5rem; color: var(--su-text-dim); font-variant-numeric: tabular-nums; }
.snake-leaderboard__name { flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.snake-leaderboard__pts { color: var(--su-reward); font-weight: 800; font-variant-numeric: tabular-nums; }

/* Minimap ---------------------------------------------------------------- */
.snake-minimap {
  border: 1px solid rgba(233,255,141,.16); border-radius: var(--su-r-md);
  background: var(--glass-fill);
  -webkit-backdrop-filter: var(--glass-blur); backdrop-filter: var(--glass-blur);
  box-shadow: var(--su-shadow-1); overflow: hidden;
}

/* Active-buff bar -------------------------------------------------------- */
.snake-buffbar { display: flex; gap: var(--su-sp-2); align-items: flex-end; }
.snake-buff { width: 3.2rem; border: 1px solid rgba(233,255,141,.16); border-radius: var(--su-r-sm); background: var(--glass-fill); -webkit-backdrop-filter: var(--glass-blur); backdrop-filter: var(--glass-blur); box-shadow: var(--su-shadow-1); overflow: hidden; text-align: center; }
.snake-buff__icon { width: 2.2rem; height: 2.2rem; margin: .3rem auto 0; }
.snake-buff__time { font: 800 var(--su-fs-xs) / 1 var(--su-font); color: var(--su-text); padding: .15rem 0; font-variant-numeric: tabular-nums; }
.snake-buff__track { height: .3rem; background: rgba(0,0,0,.4); }
.snake-buff__fill { height: 100%; background: var(--su-cyan); transition: width .1s linear; }
.snake-buff--magnet .snake-buff__fill { background: var(--su-magnet); }
.snake-buff--growth .snake-buff__fill { background: var(--su-growth); }
.snake-buff--speed .snake-buff__fill { background: var(--su-speed); }
.snake-buff--shield .snake-buff__fill { background: var(--su-shield); }
.snake-buff--weight .snake-buff__fill { background: var(--su-weight); }
.snake-buff--vision .snake-buff__fill { background: var(--su-vision); }

/* Death / result screen -------------------------------------------------- */
.snake-death-backdrop {
  position: fixed; inset: 0; display: flex; align-items: center; justify-content: center;
  padding: max(var(--su-sp-4), env(safe-area-inset-top, 0px)) max(var(--su-sp-3), env(safe-area-inset-right, 0px)) max(var(--su-sp-4), env(safe-area-inset-bottom, 0px)) max(var(--su-sp-3), env(safe-area-inset-left, 0px));
  background: linear-gradient(180deg, rgba(4,14,11,.38), rgba(4,14,11,.8)), rgba(4,14,11,.55);
  -webkit-backdrop-filter: blur(.35rem); backdrop-filter: blur(.35rem);
  pointer-events: auto; z-index: 55;
}
.snake-death { width: min(31rem, 100%); max-height: min(42rem, calc(100vh - 2rem)); padding: var(--su-sp-4); text-align: center; overflow: auto; }
.snake-death__title { margin: 0; color: var(--su-text); font: 900 var(--su-fs-xl) / .95 var(--su-font); }
.snake-death__score { margin-top: var(--su-sp-3); color: var(--su-reward); font: 900 clamp(3rem, 13vw, 5.5rem) / .86 var(--su-font); font-variant-numeric: tabular-nums; text-shadow: 0 .18rem 0 rgba(0,0,0,.35); }
.snake-death__score-label { margin-top: .15rem; color: var(--su-text-dim); font: 800 var(--su-fs-sm) / 1 var(--su-font); text-transform: uppercase; letter-spacing: .08em; }
.snake-death-stats { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--su-sp-2); margin-top: var(--su-sp-4); }
.snake-death-stat, .snake-death-best { min-width: 0; border: 1px solid rgba(77,231,221,.3); border-radius: var(--su-r-md); background: rgba(7,24,20,.5); box-shadow: inset 0 .35rem 0 rgba(255,255,255,.04); }
.snake-death-stat { display: flex; flex-direction: column; gap: .12rem; padding: .55rem .7rem; }
.snake-death-stat span, .snake-death-best span { color: var(--su-text-dim); font: 800 var(--su-fs-xs) / 1 var(--su-font); text-transform: uppercase; letter-spacing: .05em; }
.snake-death-stat b { min-width: 0; color: var(--su-text); font: 900 var(--su-fs-md) / 1.05 var(--su-font); overflow-wrap: anywhere; font-variant-numeric: tabular-nums; }
.snake-death-best { display: flex; align-items: center; justify-content: center; gap: var(--su-sp-2); margin-top: var(--su-sp-2); padding: .65rem .85rem; }
.snake-death-best b { color: var(--su-primary); font: 900 var(--su-fs-md) / 1 var(--su-font); font-variant-numeric: tabular-nums; }
.snake-death-best i { color: var(--su-reward); font: 800 var(--su-fs-sm) / 1 var(--su-font); font-style: normal; }
.snake-death-feed { margin-top: var(--su-sp-3); padding-top: var(--su-sp-3); border-top: 1px solid rgba(183,210,190,.24); text-align: left; }
.snake-death-feed__title { color: var(--su-text-dim); font: 900 var(--su-fs-xs) / 1 var(--su-font); text-transform: uppercase; letter-spacing: .08em; }
.snake-death-feed__row { display: flex; align-items: center; gap: .45rem; min-width: 0; margin-top: .35rem; color: var(--su-text); font: 700 var(--su-fs-sm) / 1.15 var(--su-font); }
.snake-death-feed__row b { min-width: 0; max-width: 11rem; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.snake-death-feed__row span { flex: 0 0 auto; color: var(--su-text-dim); }
.snake-death-actions { display: flex; justify-content: center; gap: var(--su-sp-2); margin-top: var(--su-sp-4); }
.snake-death-button { min-width: 9.5rem; min-height: 3.35rem; border-radius: var(--su-r-md); font-size: var(--su-fs-md); }

/* Connection banner ------------------------------------------------------ */
.snake-banner {
  position: fixed; top: 0; left: 50%; transform: translateX(-50%);
  margin-top: env(safe-area-inset-top, 0);
  padding: .5rem 1.2rem; border-radius: 0 0 var(--su-r-md) var(--su-r-md);
  background: var(--glass-fill);
  -webkit-backdrop-filter: var(--glass-blur); backdrop-filter: var(--glass-blur);
  color: var(--su-text); border: 1px solid rgba(77,231,221,.4);
  font: 700 var(--su-fs-sm) / 1 var(--su-font); box-shadow: var(--su-shadow-1); z-index: 40;
}
.snake-banner.is-warn { border-color: var(--su-danger); color: #ffd9d6; }

/* Accessibility: reduced motion (RE-6 §8.2) ----------------------------- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .001ms !important; animation-iteration-count: 1 !important; transition-duration: .001ms !important; scroll-behavior: auto !important; }
}
html[data-reduced-motion="true"] *, html[data-reduced-motion="true"] *::before, html[data-reduced-motion="true"] *::after { animation-duration: .001ms !important; animation-iteration-count: 1 !important; transition-duration: .001ms !important; }

/* Accessibility: reduced transparency / no backdrop-filter (RE-6 §4.3) --- */
@supports not ((backdrop-filter: blur(2px)) or (-webkit-backdrop-filter: blur(2px))) {
  .lg-glass, .snake-panel, .snake-modal, .snake-leaderboard, .snake-minimap, .snake-buff, .snake-banner, .snake-hud-pill, .snake-button--secondary, .snake-iconbtn { -webkit-backdrop-filter: none !important; backdrop-filter: none !important; background: var(--solid-panel) !important; }
  .lg-glass--cream { background: var(--solid-cream) !important; }
}
html[data-reduced-transparency="true"] .lg-glass,
html[data-reduced-transparency="true"] .snake-panel,
html[data-reduced-transparency="true"] .snake-modal,
html[data-reduced-transparency="true"] .snake-leaderboard,
html[data-reduced-transparency="true"] .snake-minimap,
html[data-reduced-transparency="true"] .snake-buff,
html[data-reduced-transparency="true"] .snake-banner,
html[data-reduced-transparency="true"] .snake-hud-pill,
html[data-reduced-transparency="true"] .snake-button--secondary,
html[data-reduced-transparency="true"] .snake-iconbtn { -webkit-backdrop-filter: none !important; backdrop-filter: none !important; background: var(--solid-panel) !important; }
html[data-reduced-transparency="true"] .lg-glass--cream { background: var(--solid-cream) !important; }
html[data-reduced-transparency="true"] .snake-death-backdrop { -webkit-backdrop-filter: none !important; backdrop-filter: none !important; }

/* Accessibility: high contrast (RE-6 §4.3) ------------------------------ */
html[data-contrast="high"] { --text: #FFFFFF; --text-dim: #EAF6E9; }
html[data-contrast="high"] .lg-glass, html[data-contrast="high"] .snake-card, html[data-contrast="high"] .snake-modal, html[data-contrast="high"] .snake-panel, html[data-contrast="high"] .snake-leaderboard, html[data-contrast="high"] .snake-minimap { border-width: 2px; border-color: var(--focus-ring); }
html[data-contrast="high"] .snake-button { outline: 2px solid var(--ink-strong); }
html[data-contrast="high"] .snake-input { border-width: 2px; }

/* Responsive ------------------------------------------------------------- */
@media (max-width: 600px) {
  :root { --fs-lg: 1.25rem; --fs-xl: 1.75rem; --fs-2xl: 2.2rem; --fs-md: 1rem; }
  .snake-skingrid { grid-template-columns: repeat(3, 1fr); }
  .snake-skincard img { width: 2.8rem; height: 2.8rem; }
  .snake-death { padding: var(--su-sp-3); }
  .snake-death-stats { grid-template-columns: 1fr 1fr; }
  .snake-death-actions { flex-direction: column-reverse; }
  .snake-death-button { width: 100%; }
}
@media (max-width: 380px) {
  .snake-skingrid { grid-template-columns: repeat(2, 1fr); }
  .snake-death-stats { grid-template-columns: 1fr; }
}