body {
  font-family: var(--font-family);
  background: var(--gradient-body);
  color: var(--color-text);
  overflow: hidden;
  min-height: 100vh;
}

.arena-shell {
  position: relative;
  width: 100vw;
  height: 100vh;
}

.panel-stack {
  position: relative;
  z-index: 7;
}

#game {
  display: block;
  width: 100vw;
  height: 100vh;
  touch-action: none;
}

.card {
  position: absolute;
  padding: 10px;
  border-radius: var(--card-radius);
  background: linear-gradient(180deg, rgba(34, 24, 14, 0.96), rgba(23, 16, 10, 0.96));
  backdrop-filter: blur(4px);
  border: 1px solid var(--color-border-panel);
  font-size: 13px;
  line-height: 1.45;
  color: var(--color-text);
  box-shadow: var(--shadow-card);
  z-index: 6;
}

.hidden {
  display: none !important;
}

#preloader {
  position: fixed;
  inset: 0;
  background: radial-gradient(circle at 20% 20%, #0a0f21, #030712 55%);
  display: grid;
  place-items: center;
  color: var(--color-text);
  gap: 8px;
  z-index: 10;
}

.spinner {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  border: 4px solid rgba(148, 163, 184, 0.4);
  border-top-color: #38bdf8;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

.modal {
  position: fixed;
  inset: 0;
  background: rgba(2, 6, 23, 0.8);
  display: grid;
  place-items: center;
  z-index: 20;
}

.modal-box {
  background: #0b1229;
  padding: 16px;
  border-radius: 12px;
  border: 1px solid rgba(148, 163, 184, 0.35);
  width: min(360px, 90vw);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.4);
}

.modal-box h3 {
  margin-bottom: 8px;
}

.modal-box input {
  width: 100%;
  margin: 8px 0 12px;
  padding: 10px 12px;
  border-radius: 10px;
  border: 1px solid rgba(148, 163, 184, 0.4);
  background: rgba(15, 23, 42, 0.9);
  color: var(--color-text);
}

.modal-actions {
  display: flex;
  gap: 8px;
  justify-content: flex-end;
}

.guide {
  position: fixed;
  bottom: calc(140px + var(--safe-bottom));
  left: 50%;
  transform: translateX(-50%);
  z-index: 12;
  min-width: 280px;
  max-width: 90vw;
}

.guide h4 {
  margin-bottom: 6px;
}

.guide small {
  color: var(--color-muted-subtle);
}

.guide-controls {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-top: 8px;
}

.guide-actions {
  margin-top: 8px;
}

.panel-toggle {
  width: 28px;
  height: 24px;
  border-radius: 6px;
  border: 1px solid rgba(148, 163, 184, 0.4);
  background: rgba(15, 23, 42, 0.7);
  color: var(--color-text);
  cursor: pointer;
}