:root {
  /* Palette Zombie Arena : noirs charbonneux, métal sale, sang séché.
     L'ancien cyan a disparu de l'écran d'accueil — il tirait vers la
     science-fiction propre, à l'opposé de ce qu'on veut ici. */
  --bg: #06060a;
  --panel: #121013;
  --line: #2c2529;
  --text: #ddd6d2;
  --dim: #8a7f7c;
  --accent: #b3261f;      /* sang séché */
  --accent-vif: #e03b2c;  /* sang frais */
  --danger: #e03b2c;
  --os: #cbbfae;          /* blanc cassé, teinte ossement */
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html, body {
  height: 100%;
  overflow: hidden;
  background: var(--bg);
  color: var(--text);
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  -webkit-user-select: none;
  user-select: none;
  touch-action: none;
}

canvas { display: block; }

.hidden { display: none !important; }

/* ------------------------------------------------------------------ overlays */

.overlay {
  position: fixed;
  inset: 0;
  display: grid;
  place-items: center;
  background:
    radial-gradient(ellipse at 50% 8%, rgba(179, 38, 31, .16) 0%, transparent 55%),
    radial-gradient(circle at 50% 45%, #171115 0%, #06060a 72%);
  z-index: 20;
  padding: 20px;
  overflow: hidden;
}

/* Coulures de sang en haut de l'écran. Purement décoratif, d'où aria-hidden
   dans le HTML : rien à annoncer à un lecteur d'écran. */
.sang {
  position: absolute;
  inset: 0 0 auto 0;
  height: 190px;
  pointer-events: none;
  opacity: .55;
  background:
    radial-gradient(9px 34px at 12% 0%, #7d1a14 0%, transparent 70%),
    radial-gradient(6px 58px at 21% 0%, #6d1611 0%, transparent 72%),
    radial-gradient(11px 26px at 34% 0%, #8b1f17 0%, transparent 70%),
    radial-gradient(5px 78px at 47% 0%, #6d1611 0%, transparent 74%),
    radial-gradient(13px 40px at 58% 0%, #7d1a14 0%, transparent 70%),
    radial-gradient(7px 96px at 69% 0%, #5e120e 0%, transparent 76%),
    radial-gradient(10px 30px at 81% 0%, #8b1f17 0%, transparent 70%),
    radial-gradient(6px 62px at 92% 0%, #6d1611 0%, transparent 73%);
}

/* Grain de pellicule : casse les aplats et salit l'ensemble. */
.overlay::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: .05;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='3'/%3E%3C/filter%3E%3Crect width='120' height='120' filter='url(%23n)'/%3E%3C/svg%3E");
}

.panel {
  position: relative;
  width: min(430px, 100%);
  background: linear-gradient(165deg, #191317 0%, #0e0c0f 100%);
  border: 1px solid var(--line);
  border-radius: 4px;               /* anguleux : rien d'arrondi ni de doux */
  padding: 30px 28px 26px;
  box-shadow:
    0 30px 90px rgba(0, 0, 0, .8),
    inset 0 1px 0 rgba(255, 255, 255, .04);
}

/* Liseré sanglant en haut du panneau. */
.panel::before {
  content: "";
  position: absolute;
  top: -1px; left: -1px; right: -1px;
  height: 3px;
  background: linear-gradient(90deg, transparent, var(--accent) 18%, var(--accent-vif) 50%, var(--accent) 82%, transparent);
}

.panel.small { text-align: center; width: min(300px, 100%); }

.marque { margin-bottom: 14px; }

.marque-logo {
  display: block;
  width: 150px;
  height: auto;
  opacity: .85;
  margin-bottom: 14px;
  filter: grayscale(1) contrast(1.2);
}

h1 {
  position: relative;
  font-size: 38px;
  line-height: .95;
  letter-spacing: 3px;
  font-weight: 900;
  color: var(--os);
  text-transform: uppercase;
  text-shadow: 0 2px 0 #000, 0 0 26px rgba(224, 59, 44, .35);
}

/* Doublure rouge légèrement décalée : effet d'impression mal calée, comme une
   affiche abîmée. Le décalage reste faible pour rester lisible. */
h1::after {
  content: attr(data-texte);
  position: absolute;
  left: 2px;
  top: 1px;
  color: var(--accent);
  opacity: .5;
  z-index: -1;
}

h2 {
  font-size: 30px;
  letter-spacing: 4px;
  font-weight: 900;
  color: var(--accent-vif);
  margin-bottom: 10px;
  text-transform: uppercase;
  text-shadow: 0 0 30px rgba(224, 59, 44, .5);
}

.sub {
  color: var(--dim);
  font-size: 13.5px;
  font-style: italic;
  margin: 4px 0 22px;
  letter-spacing: .3px;
}

label {
  display: block;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: .8px;
  color: var(--dim);
  margin-bottom: 8px;
}

input[type=text] {
  width: 100%;
  padding: 12px 14px;
  border-radius: 3px;
  border: 1px solid var(--line);
  background: #0a080a;
  color: var(--text);
  font-size: 16px;
  outline: none;
  transition: border-color .15s, box-shadow .15s;
}

input[type=text]:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(179, 38, 31, .16);
}

/* Champ du code de session : gros, espacé, lisible dans le casque */
.code-input {
  text-align: center;
  color: var(--os);
  font-size: 34px;
  font-weight: 700;
  letter-spacing: 14px;
  text-indent: 14px;   /* compense l'espacement sur le dernier caractère */
  text-transform: uppercase;
  padding: 16px 14px;
  font-family: ui-monospace, "SF Mono", Menlo, monospace;
}

.code-input::placeholder { letter-spacing: 8px; opacity: .25; font-weight: 400; }

button.primary, button.ghost {
  width: 100%;
  padding: 14px;
  border-radius: 3px;
  font: inherit;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  border: 1px solid transparent;
  transition: transform .1s, border-color .15s, background .15s;
}

button.primary {
  background: linear-gradient(180deg, var(--accent-vif), var(--accent));
  color: #fff;
  margin-top: 12px;
  letter-spacing: 2px;
  text-transform: uppercase;
  box-shadow: 0 0 24px rgba(224, 59, 44, .25);
}
button.primary:hover { background: linear-gradient(180deg, #f04a39, #c62c24); }

button.ghost { background: transparent; border-color: var(--line); color: var(--text); }
button.ghost:hover { border-color: var(--accent); }

button.primary:active, button.ghost:active { transform: scale(.985); }

.sep {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 18px 0;
  color: var(--dim);
  font-size: 12px;
}

.sep::before, .sep::after {
  content: "";
  flex: 1;
  height: 1px;
  background: var(--line);
}

.back {
  background: none;
  border: none;
  color: var(--dim);
  font: inherit;
  font-size: 13px;
  cursor: pointer;
  padding: 0 0 14px;
}

.back:hover { color: var(--accent); }

.code-badge {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 16px;
  border-radius: 3px;
  background: #0a080a;
  border: 1px solid var(--line);
  margin-bottom: 10px;
}

.code-badge-cap {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--dim);
}

.code-badge strong {
  font-size: 26px;
  letter-spacing: 6px;
  font-family: ui-monospace, "SF Mono", Menlo, monospace;
  color: var(--accent-vif);
  flex: 1;
}

.code-badge button {
  background: transparent;
  border: 1px solid var(--line);
  color: var(--dim);
  border-radius: 8px;
  padding: 7px 11px;
  font: inherit;
  font-size: 12px;
  cursor: pointer;
  white-space: nowrap;
  max-width: 190px;
  overflow: hidden;
  text-overflow: ellipsis;
}

.code-badge button:hover { border-color: var(--accent); color: var(--accent); }

.modes { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin: 18px 0 16px; }

.mode {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 16px 12px;
  border-radius: 3px;
  border: 1px solid var(--line);
  background: #0a080a;
  color: var(--text);
  cursor: pointer;
  transition: border-color .15s, transform .1s;
  font: inherit;
  text-align: left;
}

.mode:hover:not(:disabled) { border-color: var(--accent); }
.mode:active:not(:disabled) { transform: scale(.98); }
.mode:disabled { opacity: .4; cursor: not-allowed; }

.mode-title { font-size: 15px; font-weight: 600; }
.mode-sub { font-size: 12px; color: var(--dim); }

/* Choix du terrain à la création : le sélectionné doit se voir d'un coup d'œil,
   c'est lui qui décide de la partie qu'on ouvre. */
.mode.actif {
  border-color: var(--accent);
  background: #170d10;
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, .04);
}
.mode.actif .mode-title { color: var(--accent); }

.terrain {
  display: inline-block;
  margin-bottom: 8px;
  padding: 3px 9px;
  border: 1px solid var(--line);
  border-radius: 3px;
  font-size: 11px;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--dim);
}

.check {
  display: flex;
  align-items: center;
  gap: 8px;
  text-transform: none;
  letter-spacing: 0;
  font-size: 13px;
  color: var(--dim);
  cursor: pointer;
  margin-bottom: 4px;
}

.check input { width: 16px; height: 16px; accent-color: var(--accent); }

.status { font-size: 13px; color: var(--danger); min-height: 18px; margin-top: 10px; }

/* ---------------------------------------------------------------------- HUD */

#hud { position: fixed; inset: 0; pointer-events: none; z-index: 10; }

.hud-left, .hud-right, .hud-center {
  position: absolute;
  bottom: 24px;
  font-variant-numeric: tabular-nums;
}

.hud-left { left: 24px; display: flex; align-items: center; gap: 12px; }

.hp-wrap {
  width: 190px; height: 12px;
  background: #1a1f2e;
  border-radius: 6px;
  overflow: hidden;
  border: 1px solid var(--line);
}

#hp-bar {
  height: 100%;
  width: 100%;
  background: linear-gradient(90deg, #4ade80, #22d3ee);
  transition: width .18s ease-out;
}

#hp-text { font-size: 20px; font-weight: 700; min-width: 42px; }

.hud-right { right: 24px; text-align: right; }
#score { font-size: 30px; font-weight: 700; color: var(--accent); }
.hud-cap { font-size: 11px; text-transform: uppercase; letter-spacing: 1px; color: var(--dim); }

.hud-center { left: 50%; transform: translateX(-50%); text-align: center; bottom: auto; top: 24px; }
#wave-label { font-size: 22px; font-weight: 700; letter-spacing: 1px; }
#wave-sub { font-size: 13px; color: var(--dim); }

#roster {
  position: absolute;
  top: 24px; right: 24px;
  display: flex; flex-direction: column; gap: 6px;
  font-size: 13px;
}

.roster-row {
  display: flex; align-items: center; gap: 8px;
  background: rgba(16, 20, 31, .75);
  padding: 5px 10px;
  border-radius: 8px;
  border: 1px solid var(--line);
}

.roster-dot { width: 9px; height: 9px; border-radius: 50%; flex: none; }
.roster-name { flex: 1; }
.roster-score { color: var(--dim); font-variant-numeric: tabular-nums; }
.roster-row.down { opacity: .45; }
.roster-row.speaking { border-color: var(--accent); }

#crosshair {
  position: absolute;
  left: 50%; top: 50%;
  width: 6px; height: 6px;
  margin: -3px 0 0 -3px;
  border-radius: 50%;
  background: rgba(255, 255, 255, .9);
  box-shadow: 0 0 0 2px rgba(0, 0, 0, .45);
}

#toast {
  position: absolute;
  left: 50%; top: 46%;
  transform: translateX(-50%);
  font-size: 28px;
  font-weight: 700;
  letter-spacing: 1px;
  opacity: 0;
  transition: opacity .3s;
  text-shadow: 0 3px 18px rgba(0, 0, 0, .8);
}

#toast.show { opacity: 1; }

#btn-mute {
  position: absolute;
  left: 24px; top: 24px;
  pointer-events: auto;
  width: 42px; height: 42px;
  border-radius: 50%;
  border: 1px solid var(--line);
  background: rgba(16, 20, 31, .85);
  font-size: 18px;
  cursor: pointer;
}

#btn-mute.muted { opacity: .45; border-color: var(--danger); }

@media (max-width: 620px) {
  .hud-left { left: 14px; bottom: 14px; }
  .hp-wrap { width: 110px; }
  .hud-right { right: 14px; bottom: 14px; }
  #roster { display: none; }
}