:root {
  --bg: #eef6f9;
  --card-bg: #ffffff;
  --text: #333333;
  --border: #4CAF50;
  --aura: #A5D6A7;
  --contrast-text: #000000;
}

* { box-sizing: border-box; }
html, body {
  height: 100%;
  margin: 0;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
}

.container {
  min-height: 100%;
  display: grid;
  place-items: center;
  padding: 24px;
}

.overlay {
  width: 420px;
  max-width: 100%;
  background: var(--card-bg);
  border: 5px solid var(--border);
  border-radius: 20px;
  box-shadow: 0 12px 32px rgba(0,0,0,0.15);
  display: grid;
  grid-template-rows: auto auto auto auto auto;
  gap: 12px;
  padding: 16px;
  position: relative;
}

.header {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.title {
  font-size: 1.25rem;
  font-weight: 700;
}

.mode-toggle {
  display: inline-flex;
  gap: 8px;
  align-items: center;
}
.mode-toggle button {
  padding: 6px 10px;
  border: 2px solid var(--border);
  background: transparent;
  border-radius: 10px;
  cursor: pointer;
}
.mode-toggle button.active {
  background: var(--border);
  color: #fff;
}

.healers {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 8px;
}

.healer {
  display: grid;
  place-items: center;
  padding: 10px;
  border-radius: 12px;
  border: 2px solid var(--border);
  cursor: pointer;
  user-select: none;
  transition: transform 150ms ease;
  background: #fff;
}
.healer:focus { outline: 3px solid var(--border); }
.healer:hover { transform: scale(1.05); }
.healer.active { background: var(--aura); }

.message {
  min-height: 64px;
  display: grid;
  place-items: center;
  text-align: center;
  padding: 12px;
  border-radius: 12px;
  background: linear-gradient(180deg, #f8fbff 0%, #f3f7fc 100%);
}

.controls {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 8px;
}
.btn {
  padding: 10px 12px;
  border-radius: 10px;
  border: none;
  cursor: pointer;
  color: #fff;
  background: var(--border);
  transition: opacity 150ms ease;
}
.btn.secondary {
  background: #607D8B;
}
.btn.ghost {
  background: transparent;
  color: var(--text);
  border: 2px solid var(--border);
}
.btn:hover { opacity: 0.9; }

.meter {
  position: relative;
  height: 16px;
  border-radius: 10px;
  background: #e3edf5;
  overflow: hidden;
  border: 2px solid var(--border);
}
.meter-fill {
  position: absolute;
  left: 0;
  top: 0;
  height: 100%;
  width: 0%;
  background: var(--border);
  transition: width 250ms ease;
}
.meter-label {
  margin-top: 4px;
  font-size: 0.9rem;
  text-align: right;
}

/* Ceremony modes */
.playful .overlay { border-color: #FFB300; }
.playful .btn { background: #FFB300; }
.reverent .overlay { border-color: #5C6BC0; }
.reverent .btn { background: #5C6BC0; }

/* Aura pulse */
.aura-pulse {
  box-shadow: 0 0 0 0 rgba(76,175,80,0.5);
  animation: pulse 2s infinite;
}
@keyframes pulse {
  0% { box-shadow: 0 0 0 0 rgba(76,175,80,0.5); }
  70% { box-shadow: 0 0 0 20px rgba(76,175,80,0); }
  100% { box-shadow: 0 0 0 0 rgba(76,175,80,0); }
}

/* High contrast mode (optional) */
.high-contrast {
  --bg: #ffffff;
  --card-bg: #ffffff;
  --text: #000000;
  --border: #000000;
  --aura: #e0e0e0;
}

/* Screen reader only */
.sr-only {
  position: absolute !important;
  height: 1px; width: 1px;
  overflow: hidden;
  clip: rect(1px, 1px, 1px, 1px);
  white-space: nowrap;
  border: 0;
  padding: 0; margin: -1px;
}