/* ============================================
   DentaCare v4 — Components
   ============================================ */

/* === BUTTONS === */
.dc-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 8px 14px;
  font-size: var(--dc-text-base);
  font-weight: var(--dc-weight-medium);
  line-height: 1;
  border-radius: var(--dc-radius-md);
  border: 1px solid transparent;
  transition: background var(--dc-transition-fast),
              border-color var(--dc-transition-fast),
              color var(--dc-transition-fast),
              transform var(--dc-transition-fast);
  white-space: nowrap;
  user-select: none;
}

.dc-btn:active {
  transform: scale(0.98);
}

.dc-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  pointer-events: none;
}

/* Primary */
.dc-btn--primary {
  background: var(--dc-brand-600);
  color: var(--dc-text-inverse);
}
.dc-btn--primary:hover {
  background: var(--dc-brand-700);
}

/* Secondary */
.dc-btn--secondary {
  background: var(--dc-bg-surface);
  color: var(--dc-text-primary);
  border-color: var(--dc-border-default);
}
.dc-btn--secondary:hover {
  background: var(--dc-bg-hover);
  border-color: var(--dc-border-strong);
}

/* Ghost */
.dc-btn--ghost {
  background: transparent;
  color: var(--dc-text-secondary);
}
.dc-btn--ghost:hover {
  background: var(--dc-bg-hover);
  color: var(--dc-text-primary);
}

/* Danger */
.dc-btn--danger {
  background: var(--dc-danger-600);
  color: var(--dc-text-inverse);
}
.dc-btn--danger:hover {
  background: var(--dc-danger-700);
}

/* Sizes */
.dc-btn--sm {
  padding: 6px 10px;
  font-size: var(--dc-text-sm);
}
.dc-btn--lg {
  padding: 10px 18px;
  font-size: var(--dc-text-md);
}

/* Icon only */
.dc-btn--icon {
  padding: 8px;
  width: 32px;
  height: 32px;
}

/* === INPUTS === */
.dc-input,
.dc-select,
.dc-textarea {
  width: 100%;
  padding: 8px 12px;
  font-size: var(--dc-text-base);
  color: var(--dc-text-primary);
  background: var(--dc-bg-surface);
  border: 1px solid var(--dc-border-default);
  border-radius: var(--dc-radius-md);
  transition: border-color var(--dc-transition-fast),
              box-shadow var(--dc-transition-fast);
}

.dc-input:hover,
.dc-select:hover,
.dc-textarea:hover {
  border-color: var(--dc-border-strong);
}

.dc-input:focus,
.dc-select:focus,
.dc-textarea:focus {
  outline: none;
  border-color: var(--dc-border-focus);
  box-shadow: var(--dc-focus-ring);
}

.dc-input::placeholder,
.dc-textarea::placeholder {
  color: var(--dc-text-tertiary);
}

.dc-textarea {
  min-height: 80px;
  resize: vertical;
  font-family: var(--dc-font-sans);
}

.dc-input--error {
  border-color: var(--dc-danger-500);
}

.dc-label {
  display: block;
  margin-bottom: 4px;
  font-size: var(--dc-text-sm);
  font-weight: var(--dc-weight-medium);
  color: var(--dc-text-secondary);
}

.dc-label--required::after {
  content: ' *';
  color: var(--dc-danger-500);
}

.dc-help-text {
  margin-top: 4px;
  font-size: var(--dc-text-xs);
  color: var(--dc-text-tertiary);
}

.dc-help-text--error {
  color: var(--dc-danger-600);
}

/* === CARDS === */
.dc-card {
  background: var(--dc-bg-surface);
  border: 1px solid var(--dc-border-subtle);
  border-radius: var(--dc-radius-lg);
  padding: var(--dc-space-5);
}

.dc-card--compact {
  padding: var(--dc-space-3);
}

.dc-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--dc-space-4);
  padding-bottom: var(--dc-space-3);
  border-bottom: 1px solid var(--dc-border-subtle);
}

.dc-card-title {
  font-size: var(--dc-text-md);
  font-weight: var(--dc-weight-semibold);
  color: var(--dc-text-primary);
}

.dc-card-subtitle {
  font-size: var(--dc-text-sm);
  color: var(--dc-text-secondary);
  margin-top: 2px;
}

/* === BADGES === */
.dc-badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 2px 8px;
  font-size: var(--dc-text-xs);
  font-weight: var(--dc-weight-medium);
  border-radius: var(--dc-radius-full);
  white-space: nowrap;
}

.dc-badge--neutral {
  background: var(--dc-neutral-100);
  color: var(--dc-neutral-700);
}
.dc-badge--brand {
  background: var(--dc-brand-50);
  color: var(--dc-brand-700);
}
.dc-badge--success {
  background: var(--dc-success-50);
  color: var(--dc-success-700);
}
.dc-badge--warning {
  background: var(--dc-warning-50);
  color: var(--dc-warning-700);
}
.dc-badge--danger {
  background: var(--dc-danger-50);
  color: var(--dc-danger-700);
}
.dc-badge--info {
  background: var(--dc-info-50);
  color: var(--dc-info-700);
}

/* Status dot */
.dc-dot {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
}
.dc-dot--success { background: var(--dc-success-500); }
.dc-dot--warning { background: var(--dc-warning-500); }
.dc-dot--danger  { background: var(--dc-danger-500); }
.dc-dot--neutral { background: var(--dc-neutral-400); }
.dc-dot--pulse   { animation: dc-pulse 2s ease-in-out infinite; }

@keyframes dc-pulse {
  0%, 100% { opacity: 1; }
  50%      { opacity: 0.4; }
}

/* === AVATARS === */
.dc-avatar {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  font-weight: var(--dc-weight-medium);
  color: var(--dc-text-inverse);
  background: var(--dc-brand-600);
  flex-shrink: 0;
  user-select: none;
}

.dc-avatar--sm { width: 28px; height: 28px; font-size: 11px; }
.dc-avatar--md { width: 36px; height: 36px; font-size: 13px; }
.dc-avatar--lg { width: 44px; height: 44px; font-size: 15px; }

/* Avatar color variants */
.dc-avatar--c1 { background: #0891B2; }
.dc-avatar--c2 { background: #14B8A6; }
.dc-avatar--c3 { background: #8B5CF6; }
.dc-avatar--c4 { background: #F59E0B; }
.dc-avatar--c5 { background: #EC4899; }
.dc-avatar--c6 { background: #EF4444; }
.dc-avatar--c7 { background: #10B981; }
.dc-avatar--c8 { background: #6366F1; }

/* === TOASTS === */
.dc-toast-container {
  position: fixed;
  bottom: var(--dc-space-5);
  right: var(--dc-space-5);
  display: flex;
  flex-direction: column;
  gap: var(--dc-space-2);
  z-index: var(--dc-z-toast);
  pointer-events: none;
}

.dc-toast {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  min-width: 280px;
  max-width: 380px;
  padding: 12px 14px;
  background: var(--dc-neutral-900);
  color: var(--dc-text-inverse);
  border-radius: var(--dc-radius-md);
  box-shadow: var(--dc-shadow-lg);
  pointer-events: auto;
  animation: dc-toast-in 220ms ease-out;
}

.dc-toast--exit {
  animation: dc-toast-out 180ms ease-in forwards;
}

@keyframes dc-toast-in {
  from { transform: translateY(8px); opacity: 0; }
  to   { transform: translateY(0); opacity: 1; }
}

@keyframes dc-toast-out {
  to { transform: translateY(8px); opacity: 0; }
}

.dc-toast-icon {
  flex-shrink: 0;
  width: 18px;
  height: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.dc-toast--success .dc-toast-icon { color: var(--dc-success-500); }
.dc-toast--warning .dc-toast-icon { color: var(--dc-warning-500); }
.dc-toast--danger  .dc-toast-icon { color: var(--dc-danger-500); }
.dc-toast--info    .dc-toast-icon { color: var(--dc-brand-300); }

.dc-toast-body {
  flex: 1;
  min-width: 0;
}

.dc-toast-title {
  font-size: var(--dc-text-base);
  font-weight: var(--dc-weight-medium);
  margin-bottom: 2px;
}

.dc-toast-message {
  font-size: var(--dc-text-sm);
  color: var(--dc-neutral-300);
  line-height: var(--dc-leading-normal);
}

.dc-toast-close {
  background: transparent;
  border: none;
  color: var(--dc-neutral-400);
  cursor: pointer;
  padding: 2px;
  margin: -2px -2px -2px 0;
  border-radius: var(--dc-radius-sm);
  flex-shrink: 0;
}

.dc-toast-close:hover {
  color: var(--dc-text-inverse);
  background: rgba(255,255,255,0.1);
}

/* === MODALS === */
.dc-modal-overlay {
  position: fixed;
  inset: 0;
  background: var(--dc-bg-overlay);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--dc-space-5);
  z-index: var(--dc-z-modal);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--dc-transition-base);
}

.dc-modal-overlay.is-open {
  opacity: 1;
  pointer-events: auto;
}

.dc-modal {
  background: var(--dc-bg-surface);
  border-radius: var(--dc-radius-xl);
  box-shadow: var(--dc-shadow-xl);
  max-width: 520px;
  width: 100%;
  max-height: calc(100vh - 40px);
  display: flex;
  flex-direction: column;
  transform: translateY(10px);
  transition: transform var(--dc-transition-base);
}

.dc-modal-overlay.is-open .dc-modal {
  transform: translateY(0);
}

.dc-modal-header {
  padding: var(--dc-space-5) var(--dc-space-5) var(--dc-space-4);
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--dc-border-subtle);
}

.dc-modal-title {
  font-size: var(--dc-text-lg);
  font-weight: var(--dc-weight-semibold);
}

.dc-modal-body {
  padding: var(--dc-space-5);
  overflow-y: auto;
  flex: 1;
}

.dc-modal-footer {
  padding: var(--dc-space-4) var(--dc-space-5);
  display: flex;
  justify-content: flex-end;
  gap: var(--dc-space-2);
  border-top: 1px solid var(--dc-border-subtle);
}

/* === SPINNER === */
.dc-spinner {
  display: inline-block;
  width: 16px;
  height: 16px;
  border: 2px solid var(--dc-border-subtle);
  border-top-color: var(--dc-brand-600);
  border-radius: 50%;
  animation: dc-spin 700ms linear infinite;
}

.dc-spinner--lg {
  width: 28px;
  height: 28px;
  border-width: 3px;
}

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

/* === DIVIDER === */
.dc-divider {
  height: 1px;
  background: var(--dc-border-subtle);
  margin: var(--dc-space-4) 0;
}

.dc-divider--vertical {
  width: 1px;
  height: auto;
  margin: 0 var(--dc-space-3);
}

/* === EMPTY STATE === */
.dc-empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--dc-space-12) var(--dc-space-5);
  text-align: center;
  color: var(--dc-text-tertiary);
}

.dc-empty-icon {
  width: 48px;
  height: 48px;
  margin-bottom: var(--dc-space-3);
  color: var(--dc-neutral-400);
}

.dc-empty-title {
  font-size: var(--dc-text-md);
  color: var(--dc-text-secondary);
  margin-bottom: 4px;
}

.dc-empty-message {
  font-size: var(--dc-text-sm);
}