/* ============================================
   StressAId — Components
   Buttons, cards, forms, modals, toasts, badges
   ============================================ */

/* --- Buttons --- */
.sai-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--sai-space-sm);
  padding: 0.75rem 1.5rem;
  font-size: var(--sai-text-sm);
  font-weight: 600;
  border-radius: var(--sai-radius-lg);
  transition: all var(--sai-ease-fast);
  min-height: 44px;
  white-space: nowrap;
  cursor: pointer;
  text-decoration: none;
  border: none;
}

.sai-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.sai-btn--primary {
  background: var(--sai-teal-primary);
  color: var(--sai-bg-darkest);
}
.sai-btn--primary:hover:not(:disabled) {
  background: var(--sai-teal-light);
  box-shadow: var(--sai-shadow-glow-teal);
}

.sai-btn--gold {
  background: var(--sai-gradient-gold);
  color: var(--sai-bg-darkest);
}
.sai-btn--gold:hover:not(:disabled) {
  box-shadow: var(--sai-shadow-glow-gold);
  transform: translateY(-1px);
}

.sai-btn--outline {
  background: transparent;
  color: var(--sai-teal-primary);
  border: 1px solid var(--sai-teal-primary);
}
.sai-btn--outline:hover:not(:disabled) {
  background: var(--sai-teal-muted);
}

.sai-btn--ghost {
  background: transparent;
  color: var(--sai-text-secondary);
}
.sai-btn--ghost:hover:not(:disabled) {
  background: var(--sai-bg-hover);
  color: var(--sai-text-primary);
}

.sai-btn--danger {
  background: var(--sai-danger);
  color: var(--sai-white);
}
.sai-btn--danger:hover:not(:disabled) {
  background: #DC2626;
}

.sai-btn--sm {
  padding: 0.5rem 1rem;
  font-size: var(--sai-text-xs);
  min-height: 36px;
}

.sai-btn--lg {
  padding: 1rem 2rem;
  font-size: var(--sai-text-base);
  min-height: 52px;
}

.sai-btn--full { width: 100%; }

.sai-btn--icon {
  padding: 0;
  width: 44px;
  height: 44px;
  border-radius: var(--sai-radius-lg);
}

.sai-btn svg {
  width: 18px;
  height: 18px;
  stroke: currentColor;
  fill: none;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

/* --- Cards --- */
.sai-card {
  background: var(--sai-bg-card);
  border: 1px solid var(--sai-border);
  border-radius: var(--sai-radius-xl);
  padding: var(--sai-space-lg);
  transition: all var(--sai-ease-fast);
}

.sai-card--hover:hover {
  border-color: var(--sai-border-strong);
  transform: translateY(-2px);
  box-shadow: var(--sai-shadow-lg);
}

.sai-card--glow:hover {
  border-color: var(--sai-teal-dark);
  box-shadow: var(--sai-shadow-glow-teal);
}

.sai-card__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--sai-space-md);
}

.sai-card__title {
  font-size: var(--sai-text-lg);
  font-weight: 600;
}

.sai-card__subtitle {
  font-size: var(--sai-text-sm);
  color: var(--sai-text-muted);
}

/* --- Forms --- */
.sai-form-group {
  margin-bottom: var(--sai-space-lg);
}

.sai-label {
  display: block;
  font-size: var(--sai-text-sm);
  font-weight: 500;
  color: var(--sai-text-secondary);
  margin-bottom: var(--sai-space-xs);
}

.sai-input {
  width: 100%;
  padding: 0.75rem 1rem;
  background: var(--sai-bg-input);
  border: 1px solid var(--sai-border);
  border-radius: var(--sai-radius-lg);
  color: var(--sai-text-primary);
  font-size: var(--sai-text-base);
  transition: border-color var(--sai-ease-fast);
  min-height: 44px;
}

.sai-input:focus {
  border-color: var(--sai-teal-primary);
  box-shadow: 0 0 0 3px var(--sai-teal-muted);
}

.sai-input::placeholder {
  color: var(--sai-text-disabled);
}

.sai-textarea {
  min-height: 120px;
  resize: vertical;
}

.sai-select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg width='12' height='8' viewBox='0 0 12 8' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M1 1.5L6 6.5L11 1.5' stroke='%2394A3B8' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 1rem center;
  padding-right: 2.5rem;
}

/* --- Modal --- */
.sai-modal-overlay {
  position: fixed;
  inset: 0;
  background: var(--sai-bg-overlay);
  z-index: var(--sai-z-modal);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--sai-space-md);
  opacity: 0;
  visibility: hidden;
  transition: all var(--sai-ease-normal);
}

.sai-modal-overlay.active {
  opacity: 1;
  visibility: visible;
}

.sai-modal {
  background: var(--sai-bg-elevated);
  border: 1px solid var(--sai-border);
  border-radius: var(--sai-radius-2xl);
  padding: var(--sai-space-xl);
  max-width: 520px;
  width: 100%;
  max-height: 90dvh;
  overflow-y: auto;
  transform: translateY(20px);
  transition: transform var(--sai-ease-normal);
}

.sai-modal-overlay.active .sai-modal {
  transform: translateY(0);
}

.sai-modal__close {
  position: absolute;
  top: var(--sai-space-md);
  right: var(--sai-space-md);
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--sai-radius-full);
  color: var(--sai-text-muted);
  transition: all var(--sai-ease-fast);
}
.sai-modal__close:hover {
  background: var(--sai-bg-hover);
  color: var(--sai-text-primary);
}

/* --- Bottom Sheet (Mobile modals) --- */
@media (max-width: 767px) {
  .sai-modal-overlay {
    align-items: flex-end;
    padding: 0;
  }

  .sai-modal {
    border-radius: var(--sai-radius-2xl) var(--sai-radius-2xl) 0 0;
    max-height: 85dvh;
    padding-bottom: calc(var(--sai-space-xl) + var(--sai-bottomnav-safe));
    transform: translateY(100%);
  }

  .sai-modal-overlay.active .sai-modal {
    transform: translateY(0);
  }
}

/* --- Toast Notifications --- */
.sai-toast-container {
  position: fixed;
  top: var(--sai-space-lg);
  right: var(--sai-space-lg);
  z-index: var(--sai-z-toast);
  display: flex;
  flex-direction: column;
  gap: var(--sai-space-sm);
  pointer-events: none;
}

.sai-toast {
  background: var(--sai-bg-elevated);
  border: 1px solid var(--sai-border);
  border-radius: var(--sai-radius-lg);
  padding: var(--sai-space-md) var(--sai-space-lg);
  box-shadow: var(--sai-shadow-xl);
  display: flex;
  align-items: center;
  gap: var(--sai-space-sm);
  font-size: var(--sai-text-sm);
  pointer-events: auto;
  animation: sai-toast-in 0.3s ease;
  max-width: 380px;
}

.sai-toast--success { border-left: 3px solid var(--sai-success); }
.sai-toast--error { border-left: 3px solid var(--sai-danger); }
.sai-toast--warning { border-left: 3px solid var(--sai-warning); }

@keyframes sai-toast-in {
  from { opacity: 0; transform: translateX(20px); }
  to { opacity: 1; transform: translateX(0); }
}

/* --- Badges --- */
.sai-badge {
  display: inline-flex;
  align-items: center;
  padding: 2px 8px;
  font-size: var(--sai-text-xs);
  font-weight: 600;
  border-radius: var(--sai-radius-full);
  white-space: nowrap;
}

.sai-badge--teal {
  background: var(--sai-teal-muted);
  color: var(--sai-teal-light);
}

.sai-badge--gold {
  background: var(--sai-gold-muted);
  color: var(--sai-gold-light);
}

.sai-badge--danger {
  background: var(--sai-danger-muted);
  color: var(--sai-danger);
}

.sai-badge--success {
  background: var(--sai-success-muted);
  color: var(--sai-success);
}

/* --- Avatar --- */
.sai-avatar {
  width: 40px;
  height: 40px;
  border-radius: var(--sai-radius-full);
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--sai-teal-muted);
  color: var(--sai-teal-primary);
  font-weight: 600;
  font-size: var(--sai-text-sm);
  flex-shrink: 0;
}

.sai-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.sai-avatar--sm { width: 32px; height: 32px; font-size: var(--sai-text-xs); }
.sai-avatar--lg { width: 56px; height: 56px; font-size: var(--sai-text-lg); }
.sai-avatar--xl { width: 80px; height: 80px; font-size: var(--sai-text-2xl); }

/* --- Skeleton Loading --- */
.sai-skeleton {
  background: linear-gradient(
    90deg,
    var(--sai-bg-card) 25%,
    var(--sai-bg-elevated) 50%,
    var(--sai-bg-card) 75%
  );
  background-size: 200% 100%;
  animation: sai-shimmer 1.5s ease-in-out infinite;
  border-radius: var(--sai-radius-md);
}

.sai-skeleton--text { height: 1rem; width: 80%; margin-bottom: var(--sai-space-sm); }
.sai-skeleton--title { height: 1.5rem; width: 60%; margin-bottom: var(--sai-space-md); }
.sai-skeleton--card { height: 200px; width: 100%; }
.sai-skeleton--avatar { width: 40px; height: 40px; border-radius: var(--sai-radius-full); }
.sai-skeleton--circle { border-radius: var(--sai-radius-full); }

@keyframes sai-shimmer {
  0% { background-position: -200% 0; }
  100% { background-position: 200% 0; }
}

/* --- Divider --- */
.sai-divider {
  border: none;
  height: 1px;
  background: var(--sai-border);
  margin: var(--sai-space-lg) 0;
}

/* --- Tag --- */
.sai-tag {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px 10px;
  font-size: var(--sai-text-xs);
  background: var(--sai-bg-elevated);
  border: 1px solid var(--sai-border);
  border-radius: var(--sai-radius-full);
  color: var(--sai-text-secondary);
}

/* --- Empty State --- */
.sai-empty {
  text-align: center;
  padding: var(--sai-space-3xl) var(--sai-space-lg);
}

.sai-empty__icon {
  width: 64px;
  height: 64px;
  margin: 0 auto var(--sai-space-md);
  opacity: 0.3;
}

.sai-empty__title {
  font-size: var(--sai-text-lg);
  margin-bottom: var(--sai-space-xs);
}

.sai-empty__text {
  color: var(--sai-text-muted);
  font-size: var(--sai-text-sm);
}

/* --- Table --- */
.sai-table-wrap {
  overflow-x: auto;
  border: 1px solid var(--sai-border);
  border-radius: var(--sai-radius-xl);
}

.sai-table {
  width: 100%;
  border-collapse: collapse;
}

.sai-table th {
  text-align: left;
  padding: var(--sai-space-md);
  font-size: var(--sai-text-sm);
  font-weight: 600;
  color: var(--sai-text-muted);
  background: var(--sai-bg-elevated);
  border-bottom: 1px solid var(--sai-border);
}

.sai-table td {
  padding: var(--sai-space-md);
  font-size: var(--sai-text-sm);
  border-bottom: 1px solid var(--sai-border);
}

.sai-table tr:last-child td {
  border-bottom: none;
}

.sai-table tr:hover td {
  background: var(--sai-bg-hover);
}