/**
 * Clinical Architect Registry - Component Library
 * Reusable UI components based on new design system
 */

/* ============================================================================
   BUTTONS
   ========================================================================= */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-2);
  padding: 0.75rem 1.5rem;
  font-family: var(--font-label);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  text-decoration: none;
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition-default);
  user-select: none;
  white-space: nowrap;
}

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

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

/* Button Variants */
.btn-primary {
  background-color: var(--color-primary);
  color: var(--color-on-primary);
  position: relative;
  overflow: hidden;
}

.btn-primary::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(180deg, rgba(255,255,255,0.1) 0%, rgba(255,255,255,0) 100%);
  opacity: 0;
  transition: opacity 0.3s ease;
}

.btn-primary:hover {
  background-color: var(--color-primary-container);
  text-decoration: none;
  box-shadow: 0 4px 12px rgba(2, 23, 56, 0.3);
  transform: translateY(-1px);
}

.btn-primary:hover::before {
  opacity: 1;
}

.btn-primary:active {
  transform: translateY(0);
  box-shadow: 0 2px 6px rgba(2, 23, 56, 0.2);
}

.btn-secondary {
  background-color: var(--color-secondary);
  color: var(--color-on-secondary);
}

.btn-secondary:hover {
  background-color: #237157;
  text-decoration: none;
}

.btn-outline {
  background-color: transparent;
  color: var(--color-primary);
  border: 1px solid var(--color-outline-variant);
}

.btn-outline:hover {
  background-color: var(--color-surface-container-high);
  text-decoration: none;
}

.btn-ghost {
  background-color: transparent;
  color: var(--color-primary);
}

.btn-ghost:hover {
  background-color: var(--color-surface-container-low);
  text-decoration: none;
}

.btn-error {
  background-color: var(--color-error);
  color: var(--color-on-error);
}

.btn-error:hover {
  background-color: #a51616;
  text-decoration: none;
}

/* Button Sizes */
.btn-sm {
  padding: 0.5rem 1rem;
  font-size: 0.625rem;
}

.btn-lg {
  padding: 1rem 2rem;
  font-size: 0.875rem;
}

.btn-block {
  width: 100%;
  display: flex;
}

.btn-icon {
  padding: 0.75rem;
  aspect-ratio: 1;
}

/* ============================================================================
   FORM INPUTS
   ========================================================================= */

.form-group {
  margin-bottom: var(--spacing-4);
}

.form-label {
  display: block;
  font-family: var(--font-label);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-on-surface-variant);
  margin-bottom: var(--spacing-2);
}

.form-control {
  display: block;
  width: 100%;
  padding: 0.625rem 0.75rem;
  font-family: var(--font-body);
  font-size: 0.875rem;
  line-height: 1.5;
  color: var(--color-on-surface);
  background-color: var(--color-surface-container-low);
  border: 1px solid var(--color-outline-variant);
  border-radius: var(--radius-sm);
  transition: all var(--transition-default);
}

.form-control::placeholder {
  color: var(--color-outline);
  opacity: 1;
}

.form-control:focus {
  outline: none;
  border-color: var(--color-primary);
  background-color: #ffffff;
  box-shadow: 0 0 0 3px rgba(2, 23, 56, 0.08);
}

.form-control:disabled {
  background-color: var(--color-surface-container);
  opacity: 0.6;
  cursor: not-allowed;
}

.form-control.is-invalid {
  border-color: var(--color-error);
}

.form-control.is-invalid:focus {
  box-shadow: 0 0 0 1px var(--color-error);
}

/* Input with Icon */
.input-group {
  position: relative;
  display: flex;
  align-items: center;
}

.input-icon-left {
  position: absolute;
  left: 0.75rem;
  pointer-events: none;
  color: var(--color-outline);
  font-size: 1rem;
}

.input-icon-right {
  position: absolute;
  right: 0.75rem;
  color: var(--color-outline);
  font-size: 1rem;
}

.input-icon-right button {
  background: none;
  border: none;
  padding: 0;
  cursor: pointer;
  color: var(--color-outline);
  transition: color var(--transition-default);
}

.input-icon-right button:hover {
  color: var(--color-primary);
}

.form-control.has-icon-left {
  padding-left: 2.5rem;
}

.form-control.has-icon-right {
  padding-right: 2.5rem;
}

/* Validation Feedback */
.invalid-feedback {
  display: block;
  margin-top: var(--spacing-1);
  font-size: 0.75rem;
  color: var(--color-error);
}

.valid-feedback {
  display: block;
  margin-top: var(--spacing-1);
  font-size: 0.75rem;
  color: var(--color-secondary);
}

/* Helper Text */
.form-text {
  display: block;
  margin-top: var(--spacing-1);
  font-size: 0.75rem;
  color: var(--color-on-surface-variant);
}

/* Select */
select.form-control {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='%2375777f'%3E%3Cpath d='M7 10l5 5 5-5z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.5rem center;
  background-size: 1.5rem;
  padding-right: 2.5rem;
}

/* Checkbox & Radio */
.form-check {
  display: flex;
  align-items: center;
  gap: var(--spacing-2);
  margin-bottom: var(--spacing-3);
}

.form-check-input {
  width: 1.125rem;
  height: 1.125rem;
  margin: 0;
  cursor: pointer;
  accent-color: var(--color-primary);
}

.form-check-label {
  font-size: 0.875rem;
  color: var(--color-on-surface);
  cursor: pointer;
  user-select: none;
}

/* ============================================================================
   CARDS
   ========================================================================= */

.card {
  background-color: var(--color-surface-container-lowest);
  border: 1px solid var(--color-outline-variant);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}

.card-header {
  padding: var(--spacing-4) var(--spacing-6);
  background-color: var(--color-surface-container);
  border-bottom: 1px solid var(--color-outline-variant);
  font-family: var(--font-headline);
  font-size: 0.875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-primary);
}

.card-body {
  padding: var(--spacing-6);
}

.card-footer {
  padding: var(--spacing-4) var(--spacing-6);
  background-color: var(--color-surface-container);
  border-top: 1px solid var(--color-outline-variant);
}

/* Stat Card (KPI) */
.stat-card {
  background-color: var(--color-surface-container-lowest);
  border: 1px solid var(--color-outline-variant);
  border-radius: var(--radius-sm);
  padding: var(--spacing-5);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-3);
  height: 100%;
  transition: box-shadow var(--transition-default);
}

.stat-card:hover {
  box-shadow: var(--shadow-md);
}

.stat-card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
}

.stat-card-title {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-on-surface-variant);
}

.stat-card-icon {
  color: var(--color-primary);
  font-size: 1.5rem;
}

.stat-card-value {
  font-size: 2rem;
  font-weight: 700;
  color: var(--color-primary);
  font-family: var(--font-headline);
  line-height: 1;
}

.stat-card-meta {
  font-size: 0.625rem;
  color: var(--color-on-surface-variant);
  display: flex;
  align-items: center;
  gap: var(--spacing-1);
}

.stat-card-trend {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
}

.stat-card-trend.positive {
  color: var(--color-secondary);
}

.stat-card-trend.negative {
  color: var(--color-error);
}

/* ============================================================================
   ALERTS & NOTICES
   ========================================================================= */

.alert {
  padding: var(--spacing-3);
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
  line-height: 1.6;
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-3);
}

.alert-icon {
  flex-shrink: 0;
  font-size: 1rem;
  margin-top: 0.125rem;
}

.alert-info {
  background-color: var(--color-surface-container);
  color: var(--color-on-surface-variant);
  border: 1px solid var(--color-outline-variant);
}

.alert-info .alert-icon {
  color: var(--color-primary);
}

.alert-success {
  background-color: var(--color-secondary-container);
  color: var(--color-on-secondary-container);
  border: 1px solid var(--color-secondary);
}

.alert-success .alert-icon {
  color: var(--color-secondary);
}

.alert-warning {
  background-color: var(--color-tertiary-fixed);
  color: var(--color-on-tertiary-fixed-variant);
  border: 1px solid var(--color-on-tertiary-container);
}

.alert-warning .alert-icon {
  color: var(--color-on-tertiary-container);
}

.alert-error {
  background-color: var(--color-error-container);
  color: var(--color-on-error-container);
  border: 1px solid var(--color-error);
}

.alert-error .alert-icon {
  color: var(--color-error);
}

/* Security Notice (Login Page) */
.security-notice {
  background-color: var(--color-surface-container);
  color: var(--color-on-surface-variant);
  padding: var(--spacing-3);
  border-radius: var(--radius-sm);
  font-size: 0.7rem;
  line-height: 1.6;
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-3);
}

.security-notice .material-symbols-outlined {
  color: var(--color-primary);
  font-size: 0.875rem;
  margin-top: 0.125rem;
  flex-shrink: 0;
}

/* ============================================================================
   BADGES
   ========================================================================= */

.badge {
  display: inline-flex;
  align-items: center;
  padding: 0.25rem 0.5rem;
  font-size: 0.625rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-radius: var(--radius-sm);
  line-height: 1;
}

.badge-primary {
  background-color: var(--color-primary);
  color: var(--color-on-primary);
}

.badge-secondary {
  background-color: var(--color-secondary);
  color: var(--color-on-secondary);
}

.badge-outline {
  background-color: transparent;
  color: var(--color-primary);
  border: 1px solid var(--color-outline);
}

.badge-success {
  background-color: var(--color-secondary);
  color: var(--color-on-secondary);
}

.badge-error {
  background-color: var(--color-error);
  color: var(--color-on-error);
}

/* Status Indicator */
.status-indicator {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-2);
  font-size: 0.75rem;
}

.status-dot {
  width: 0.5rem;
  height: 0.5rem;
  border-radius: 50%;
  flex-shrink: 0;
}

.status-dot.active {
  background-color: var(--color-secondary);
}

.status-dot.inactive {
  background-color: var(--color-outline);
}

.status-dot.error {
  background-color: var(--color-error);
}

.status-dot.warning {
  background-color: var(--color-on-tertiary-container);
}

/* ============================================================================
   ACTIVITY LOG
   ========================================================================= */

.activity-log {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-4);
}

.activity-item {
  display: flex;
  gap: var(--spacing-3);
  padding-bottom: var(--spacing-3);
  border-bottom: 1px solid var(--color-outline-variant);
}

.activity-item:last-child {
  border-bottom: none;
}

.activity-indicator {
  width: 0.5rem;
  height: 0.5rem;
  border-radius: 50%;
  margin-top: 0.25rem;
  flex-shrink: 0;
}

.activity-indicator.success {
  background-color: var(--color-secondary);
}

.activity-indicator.info {
  background-color: #3b82f6;
}

.activity-indicator.error {
  background-color: var(--color-error);
}

.activity-content {
  flex: 1;
}

.activity-title {
  font-size: 0.6875rem;
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: 0.125rem;
}

.activity-description {
  font-size: 0.625rem;
  color: var(--color-on-surface-variant);
  margin-bottom: 0.25rem;
}

.activity-time {
  font-size: 0.5625rem;
  color: var(--color-outline);
}

/* ============================================================================
   DIVIDERS
   ========================================================================= */

.divider {
  height: 1px;
  background-color: var(--color-outline-variant);
  border: none;
  margin: var(--spacing-4) 0;
}

.divider-vertical {
  width: 1px;
  height: 100%;
  background-color: var(--color-outline-variant);
  margin: 0 var(--spacing-4);
}

.divider-text {
  display: flex;
  align-items: center;
  gap: var(--spacing-4);
  margin: var(--spacing-6) 0;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-on-surface-variant);
}

.divider-text::before,
.divider-text::after {
  content: '';
  flex: 1;
  height: 1px;
  background-color: var(--color-outline-variant);
}

/* ============================================================================
   LINKS
   ========================================================================= */

.link {
  color: var(--color-secondary);
  text-decoration: none;
  font-weight: 600;
  transition: color var(--transition-default);
}

.link:hover {
  color: var(--color-on-secondary-fixed-variant);
  text-decoration: underline;
}

.link-sm {
  font-size: 0.7rem;
}

/* ============================================================================
   LOADING STATES
   ========================================================================= */

.spinner {
  display: inline-block;
  width: 1.5rem;
  height: 1.5rem;
  border: 2px solid var(--color-outline-variant);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

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

.skeleton {
  background: linear-gradient(
    90deg,
    var(--color-surface-container) 25%,
    var(--color-surface-container-high) 50%,
    var(--color-surface-container) 75%
  );
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: var(--radius-sm);
}

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

/* ============================================================================
   EMPTY STATES
   ========================================================================= */

.empty-state {
  text-align: center;
  padding: var(--spacing-12) var(--spacing-6);
  color: var(--color-on-surface-variant);
}

.empty-state-icon {
  font-size: 4rem;
  color: var(--color-outline);
  margin-bottom: var(--spacing-4);
}

.empty-state-title {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--color-on-surface);
  margin-bottom: var(--spacing-2);
}

.empty-state-description {
  font-size: 0.875rem;
  color: var(--color-on-surface-variant);
  margin-bottom: var(--spacing-4);
}