.dr-root {
  --dr-bg: #fff;
  --dr-bg-muted: #f8fafc;
  --dr-bg-card: #fff;
  --dr-text: #0f172a;
  --dr-text-muted: #64748b;
  --dr-border: #e2e8f0;
  --dr-primary: #7c3aed;
  --dr-primary-light: #ede9fe;
  --dr-primary-dark: #5b21b6;
  --dr-accent: #f59e0b;
  --dr-danger: #ef4444;
  --dr-success: #10b981;
  --dr-shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
  --dr-shadow-md: 0 4px 16px rgba(0,0,0,0.1);
  --dr-shadow-lg: 0 8px 32px rgba(0,0,0,0.12);
  --dr-radius: 1rem;
  --dr-radius-sm: 0.5rem;

  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
  max-width: 900px;
  margin: 0 auto;
  padding: 1rem;
}

.theme-dark .dr-root {
  --dr-bg: #0f172a;
  --dr-bg-muted: #1e293b;
  --dr-bg-card: #1e293b;
  --dr-text: #f1f5f9;
  --dr-text-muted: #94a3b8;
  --dr-border: #334155;
  --dr-primary: #a78bfa;
  --dr-primary-light: #2d1b69;
  --dr-primary-dark: #7c3aed;
  --dr-accent: #fbbf24;
  --dr-shadow-sm: 0 1px 3px rgba(0,0,0,0.3);
  --dr-shadow-md: 0 4px 16px rgba(0,0,0,0.4);
  --dr-shadow-lg: 0 8px 32px rgba(0,0,0,0.5);
}

@media (max-width: 680px) {
  .dr-root {
    grid-template-columns: 1fr;
  }
}

.dr-panel {
  background: var(--dr-bg-card);
  border: 1px solid var(--dr-border);
  border-radius: var(--dr-radius);
  box-shadow: var(--dr-shadow-md);
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.dr-label {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--dr-text-muted);
  margin: 0 0 0.625rem;
}

.dr-dice-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.5rem;
}

.dr-die-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 0.5rem;
  background: var(--dr-bg-muted);
  border: 1px solid var(--dr-border);
  border-radius: var(--dr-radius-sm);
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s, transform 0.1s;
  color: var(--dr-primary);
  font-size: 0.85rem;
  font-weight: 700;
}

.dr-die-btn:hover {
  background: var(--dr-primary-light);
  border-color: var(--dr-primary);
  transform: translateY(-2px);
}

.dr-die-btn:active {
  transform: translateY(0);
}

.dr-pool-section {
  border: 1px solid var(--dr-border);
  border-radius: var(--dr-radius-sm);
  padding: 0.875rem;
  background: var(--dr-bg-muted);
}

.dr-pool-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.5rem;
}

.dr-pool-header .dr-label {
  margin-bottom: 0;
}

.dr-clear-btn {
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--dr-text-muted);
  background: none;
  border: 1px solid var(--dr-border);
  border-radius: 0.375rem;
  padding: 0.2rem 0.5rem;
  cursor: pointer;
  transition: color 0.15s, border-color 0.15s;
}

.dr-clear-btn:hover {
  color: var(--dr-danger);
  border-color: var(--dr-danger);
}

.dr-pool-display {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  min-height: 2.5rem;
  align-items: center;
}

.dr-pool-empty {
  font-size: 0.8rem;
  color: var(--dr-text-muted);
  font-style: italic;
}

.dr-pool-chip {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  background: var(--dr-primary-light);
  border: 1px solid var(--dr-primary);
  border-radius: 2rem;
  padding: 0.2rem 0.5rem 0.2rem 0.75rem;
}

.dr-chip-label {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--dr-primary);
}

.dr-chip-remove {
  width: 1.125rem;
  height: 1.125rem;
  border-radius: 50%;
  border: none;
  background: var(--dr-primary);
  color: #fff;
  font-size: 0.8rem;
  line-height: 1;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.15s;
  padding: 0;
}

.dr-chip-remove:hover {
  background: var(--dr-primary-dark);
}

.dr-modifier-section {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.dr-modifier-controls {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  background: var(--dr-bg-muted);
  border: 1px solid var(--dr-border);
  border-radius: 2rem;
  padding: 0.25rem 0.5rem;
}

.dr-mod-btn {
  width: 1.75rem;
  height: 1.75rem;
  border-radius: 50%;
  border: 1px solid var(--dr-border);
  background: var(--dr-bg-card);
  color: var(--dr-text);
  font-size: 1rem;
  font-weight: 700;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.15s, border-color 0.15s;
  line-height: 1;
  padding: 0;
}

.dr-mod-btn:hover {
  background: var(--dr-primary-light);
  border-color: var(--dr-primary);
}

.dr-modifier-display {
  min-width: 2rem;
  text-align: center;
  font-weight: 700;
  font-size: 1rem;
  color: var(--dr-text);
}

.dr-roll-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  width: 100%;
  padding: 0.875rem;
  background: linear-gradient(135deg, var(--dr-primary), var(--dr-primary-dark));
  color: #fff;
  border: none;
  border-radius: var(--dr-radius-sm);
  font-size: 1rem;
  font-weight: 700;
  cursor: pointer;
  transition: opacity 0.2s, transform 0.1s;
  box-shadow: 0 4px 12px rgba(124, 58, 237, 0.35);
  margin-top: auto;
}

.dr-roll-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  box-shadow: none;
}

.dr-roll-btn:not(:disabled):hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 18px rgba(124, 58, 237, 0.45);
}

.dr-roll-btn:not(:disabled):active {
  transform: translateY(0);
}

@keyframes dr-shake {
  0%, 100% { transform: rotate(0deg); }
  20% { transform: rotate(-15deg); }
  40% { transform: rotate(15deg); }
  60% { transform: rotate(-10deg); }
  80% { transform: rotate(10deg); }
}

.dr-rolling {
  animation: dr-shake 0.4s ease-in-out;
}

.dr-results-panel {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.dr-result-card {
  background: var(--dr-bg-card);
  border: 1px solid var(--dr-border);
  border-radius: var(--dr-radius);
  box-shadow: var(--dr-shadow-md);
  padding: 1.5rem;
  min-height: 12rem;
  display: flex;
  align-items: center;
  justify-content: center;
}

.dr-result-empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  color: var(--dr-text-muted);
}

.dr-result-empty p {
  font-size: 0.9rem;
  margin: 0;
}

.dr-result-content {
  width: 100%;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
}

.dr-total-area {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.25rem;
}

.dr-total-label {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--dr-text-muted);
}

.dr-total-val {
  font-size: 4rem;
  font-weight: 900;
  color: var(--dr-primary);
  line-height: 1;
}

.dr-roll-expr {
  font-size: 0.8rem;
  color: var(--dr-text-muted);
  font-style: italic;
}

.dr-dice-results {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  justify-content: center;
}

.dr-result-pip {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.15rem;
  padding: 0.5rem 0.75rem;
  background: var(--dr-bg-muted);
  border: 2px solid var(--dr-border);
  border-radius: var(--dr-radius-sm);
  min-width: 3rem;
  transition: border-color 0.2s;
}

.dr-pip-max {
  border-color: var(--dr-success);
  background: rgba(16, 185, 129, 0.1);
}

.dr-pip-min {
  border-color: var(--dr-danger);
  background: rgba(239, 68, 68, 0.1);
}

.dr-pip-val {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--dr-text);
  line-height: 1;
}

.dr-pip-die {
  font-size: 0.65rem;
  color: var(--dr-text-muted);
  font-weight: 600;
}

.dr-history-section {
  background: var(--dr-bg-card);
  border: 1px solid var(--dr-border);
  border-radius: var(--dr-radius);
  box-shadow: var(--dr-shadow-sm);
  padding: 1.25rem;
  flex: 1;
}

.dr-history-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.75rem;
}

.dr-history-header .dr-label {
  margin-bottom: 0;
}

.dr-history-list {
  display: flex;
  flex-direction: column;
  gap: 0.375rem;
  max-height: 220px;
  overflow-y: auto;
}

.dr-history-list::-webkit-scrollbar {
  width: 4px;
}

.dr-history-list::-webkit-scrollbar-thumb {
  background: var(--dr-border);
  border-radius: 2px;
}

.dr-history-empty {
  font-size: 0.8rem;
  color: var(--dr-text-muted);
  font-style: italic;
  text-align: center;
  margin: 1rem 0;
}

.dr-history-item {
  display: grid;
  grid-template-columns: 1fr auto auto;
  align-items: center;
  gap: 0.75rem;
  padding: 0.4rem 0.6rem;
  background: var(--dr-bg-muted);
  border-radius: var(--dr-radius-sm);
  font-size: 0.8rem;
  animation: dr-fadein 0.2s ease-out;
}

@keyframes dr-fadein {
  from {
    opacity: 0;
    transform: translate-y(-4px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.dr-hist-expr {
  color: var(--dr-text-muted);
  font-size: 0.75rem;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.dr-hist-result {
  font-weight: 800;
  font-size: 1rem;
  color: var(--dr-primary);
}

.dr-hist-time {
  font-size: 0.7rem;
  color: var(--dr-text-muted);
}