:root {
  --bg: #11131a;
  --bg-2: #181b25;
  --fg: #d8d4cc;
  --fg-dim: #8a8478;
  --accent: #b7755a;
  --danger: #a23b3b;
  --tab-active: #232636;
  --border: #2a2d3a;
  font-family: 'Georgia', 'Times New Roman', serif;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--fg);
  min-height: 100vh;
  width: 100%;
  overflow-x: hidden;
}

body {
  display: flex;
  flex-direction: column;
}

header {
  padding: 16px 24px 0;
  border-bottom: 1px solid var(--border);
  background: var(--bg-2);
  position: relative;
}

#site-title {
  margin: 0 0 12px;
  font-weight: 400;
  letter-spacing: 0.08em;
  font-size: 18px;
  color: var(--fg-dim);
}

.tabs {
  display: flex;
  gap: 4px;
  flex-wrap: wrap;
}

.sound-toggle {
  position: absolute;
  top: 14px;
  right: 18px;
  background: transparent;
  color: var(--fg-dim);
  border: 1px solid var(--border);
  padding: 6px 12px;
  font-family: inherit;
  font-size: 12px;
  letter-spacing: 0.08em;
  cursor: pointer;
  border-radius: 4px;
  transition: background 120ms, color 120ms, border-color 120ms;
}
.sound-toggle:hover {
  color: var(--fg);
  background: rgba(255, 255, 255, 0.03);
  border-color: var(--accent);
}
.sound-toggle.on {
  color: var(--accent);
  border-color: var(--accent);
}

.tab {
  background: transparent;
  color: var(--fg-dim);
  border: 1px solid var(--border);
  border-bottom: none;
  padding: 10px 18px;
  font-family: inherit;
  font-size: 14px;
  letter-spacing: 0.05em;
  cursor: pointer;
  border-radius: 6px 6px 0 0;
  transition: background 120ms, color 120ms;
}

.tab:hover {
  color: var(--fg);
  background: rgba(255,255,255,0.02);
}

.tab.active {
  background: var(--tab-active);
  color: var(--fg);
  border-color: var(--border);
}

main {
  flex: 1;
  padding: 24px;
  display: flex;
  justify-content: center;
  width: 100%;
  min-width: 0;
}

.game-panel {
  width: 100%;
  max-width: 720px;
  min-width: 0;
}

.game-panel[hidden] { display: none; }

/* Shared horror utility classes — games may add their own too */
@keyframes flicker {
  0%, 100% { opacity: 1; }
  47% { opacity: 1; }
  48% { opacity: 0.2; }
  50% { opacity: 1; }
  82% { opacity: 1; }
  83% { opacity: 0.4; }
  85% { opacity: 1; }
}

.flicker { animation: flicker 4s infinite; }

@keyframes subtle-shake {
  0%, 100% { transform: translate(0,0); }
  25% { transform: translate(-0.5px, 0.5px); }
  50% { transform: translate(0.5px, -0.5px); }
  75% { transform: translate(-0.5px, -0.5px); }
}

.shake { animation: subtle-shake 0.15s infinite; }

button.primary {
  background: var(--tab-active);
  color: var(--fg);
  border: 1px solid var(--border);
  padding: 8px 16px;
  font-family: inherit;
  font-size: 14px;
  cursor: pointer;
  border-radius: 4px;
}

button.primary:hover {
  background: #2c3044;
}

.credits {
  padding: 16px 24px;
  text-align: center;
  color: var(--fg-dim);
  font-size: 12px;
  letter-spacing: 0.04em;
  border-top: 1px solid var(--border);
  background: var(--bg-2);
}

@media (max-width: 620px) {
  header {
    padding: 12px 12px 0;
  }

  #site-title {
    margin-bottom: 8px;
    font-size: 16px;
  }

  .sound-toggle {
    position: static;
    display: inline-flex;
    min-height: 40px;
    align-items: center;
    margin: 0 0 10px;
    padding: 7px 10px;
  }

  .tabs {
    gap: 6px;
  }

  .tab {
    flex: 1 1 calc(50% - 6px);
    min-height: 42px;
    padding: 9px 8px;
    text-align: center;
    font-size: 13px;
    letter-spacing: 0.03em;
  }

  main {
    padding: 12px;
  }

  .credits {
    padding: 12px;
    font-size: 11px;
  }
}

@media (max-width: 360px) {
  .tab {
    font-size: 12px;
    letter-spacing: 0.02em;
  }
}