/* Змейка 3D — оформление интерфейса. Сама сцена рисуется в WebGL на canvas. */

:root {
  --bg: #070b12;
  --panel: rgba(11, 18, 30, 0.86);
  --line: rgba(125, 170, 220, 0.18);
  --text: #e6edf6;
  --muted: #8ea3bd;
  --accent: #6ee7a8;
  --accent-deep: #0a2c1c;
  --info: #4fb0ff;
  --danger: #ff6154;
  --warn: #f5b544;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  height: 100%;
  overflow: hidden;
  background: var(--bg);
}

body {
  color: var(--text);
  font: 15px/1.5 "Segoe UI", system-ui, -apple-system, Roboto, sans-serif;
  -webkit-font-smoothing: antialiased;
  user-select: none;
}

/* ---------- Сцена ---------- */

#scene {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
  touch-action: none;
  cursor: grab;
}

#scene:active { cursor: grabbing; }

/* ---------- Верхняя панель ---------- */

.hud {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 14px 18px;
  pointer-events: none;
}

.brand {
  font-size: 21px;
  font-weight: 700;
  letter-spacing: -0.02em;
  text-shadow: 0 2px 14px rgba(0, 0, 0, 0.6);
}

.brand span {
  margin-left: 7px;
  padding: 3px 8px;
  border-radius: 999px;
  background: rgba(110, 231, 168, 0.14);
  color: var(--accent);
  font-size: 12px;
  font-weight: 600;
  vertical-align: middle;
}

.stats {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 8px;
}

.stat {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  min-width: 68px;
  padding: 6px 11px;
  border: 1px solid var(--line);
  border-radius: 11px;
  background: var(--panel);
  backdrop-filter: blur(8px);
}

.stat-wide { min-width: 104px; }
.stat-dim { opacity: 0.6; }

.stat-label {
  color: var(--muted);
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.stat-value {
  font-size: 19px;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  line-height: 1.25;
}

.stat-value.is-record { color: var(--accent); }

/* ---------- Экраны ---------- */

.overlay {
  position: fixed;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  /* Сквозь фон экрана камера продолжает вращаться мышью — ловит клики только панель. */
  pointer-events: none;
  background: radial-gradient(circle at 50% 45%, rgba(7, 11, 18, 0.55), rgba(7, 11, 18, 0.85));
}

.overlay[hidden] { display: none; }

.panel {
  width: min(100%, 400px);
  padding: 28px 26px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: var(--panel);
  backdrop-filter: blur(14px);
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.6);
  text-align: center;
  pointer-events: auto;
}

.panel-title {
  margin: 0 0 10px;
  font-size: 28px;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.panel-title.is-danger { color: var(--danger); }
.panel-title.is-win { color: var(--accent); }

.panel-text {
  margin: 0 0 12px;
  font-size: 14px;
  color: #c7d5e6;
}

.panel-text b { font-variant-numeric: tabular-nums; }

.panel-hint {
  margin: 0 0 20px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--muted);
}

.panel-hint b { color: var(--text); }

.btn {
  width: 100%;
  padding: 12px 18px;
  border: 0;
  border-radius: 12px;
  background: var(--accent);
  color: var(--accent-deep);
  font: inherit;
  font-weight: 700;
  cursor: pointer;
  transition: transform 0.12s ease, filter 0.12s ease;
}

.btn:hover { filter: brightness(1.08); }
.btn:active { transform: translateY(1px); }
.btn:focus-visible { outline: 2px solid var(--text); outline-offset: 3px; }

/* ---------- Подсказка по клавишам ---------- */

.legend {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 6px 16px;
  justify-content: center;
  padding: 12px 16px 14px;
  color: var(--muted);
  font-size: 12.5px;
  pointer-events: none;
  background: linear-gradient(to top, rgba(7, 11, 18, 0.75), transparent);
}

.legend[hidden] { display: none; }

.legend-group { white-space: nowrap; }

kbd {
  display: inline-block;
  min-width: 21px;
  margin: 0 1px;
  padding: 2px 6px;
  border: 1px solid var(--line);
  border-bottom-width: 2px;
  border-radius: 6px;
  background: rgba(11, 18, 30, 0.9);
  color: var(--text);
  font: 600 11px/1.4 ui-monospace, "Cascadia Mono", Consolas, monospace;
  text-align: center;
}

/* ---------- Панель логов ---------- */

.logpanel {
  position: fixed;
  right: 14px;
  bottom: 56px;
  width: min(46vw, 430px);
  max-height: 46vh;
  display: flex;
  flex-direction: column;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: rgba(6, 10, 17, 0.93);
  backdrop-filter: blur(10px);
  overflow: hidden;
  font: 11.5px/1.55 ui-monospace, "Cascadia Mono", Consolas, monospace;
}

.logpanel[hidden] { display: none; }

.logpanel-head {
  display: flex;
  justify-content: space-between;
  padding: 7px 11px;
  border-bottom: 1px solid var(--line);
  color: var(--text);
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  font-size: 10px;
}

.logpanel-head span {
  color: var(--muted);
  font-weight: 400;
  text-transform: none;
  letter-spacing: 0;
}

.logpanel-list {
  overflow-y: auto;
  padding: 6px 11px 9px;
  scrollbar-width: thin;
}

.log-line {
  display: flex;
  gap: 8px;
  padding: 1px 0;
  white-space: nowrap;
}

.log-time { color: #4d6076; font-variant-numeric: tabular-nums; }
.log-tag { color: #a98bff; flex-shrink: 0; }
.log-msg { color: #b9c9dc; white-space: pre-wrap; }

.log-trace .log-msg { color: #667c94; }
.log-debug .log-msg { color: #8fb3d4; }
.log-info  .log-msg { color: #cfe0f0; }
.log-warn  .log-msg { color: var(--warn); }
.log-error .log-msg { color: var(--danger); }

/* ---------- Узкие экраны ---------- */

@media (max-width: 720px) {
  .hud { flex-direction: column; align-items: flex-start; gap: 8px; }
  .stats { justify-content: flex-start; }
  .stat-dim { display: none; }
  .legend { font-size: 11px; }
  .logpanel { width: calc(100vw - 28px); }
}