/**
 * Components - Boutons, Cards, Modals, Forms, Alerts, Badges
 */

/* ========== BUTTONS ========== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-5);
  font-family: var(--font-sans);
  font-size: var(--font-size-base);
  font-weight: 500;
  line-height: 1.5;
  border-radius: var(--radius);
  border: none;
  cursor: pointer;
  transition: all var(--transition-base);
  text-decoration: none;
  white-space: nowrap;
  user-select: none;
}

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

.btn svg {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
}

/* Button Variants */
.btn-primary {
  background: var(--color-primary);
  color: white;
}

.btn-primary:hover:not(:disabled) {
  background: var(--color-primary-hover);
}

.btn-secondary {
  background: var(--color-bg);
  color: var(--color-text);
  border: 1px solid var(--color-border);
}

.btn-secondary:hover:not(:disabled) {
  background: var(--color-surface);
  border-color: var(--color-text-light);
}

.btn-success {
  background: var(--color-success);
  color: white;
}

.btn-success:hover:not(:disabled) {
  background: #047857;
}

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

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

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

.btn-ghost:hover:not(:disabled) {
  background: var(--color-surface);
  color: var(--color-text);
}

/* Button Sizes */
.btn-sm {
  padding: var(--space-2) var(--space-3);
  font-size: var(--font-size-sm);
}

.btn-lg {
  padding: var(--space-4) var(--space-6);
  font-size: var(--font-size-md);
}

/* Button Loading */
.btn-loading {
  position: relative;
  color: transparent !important;
}

.btn-loading::after {
  content: '';
  position: absolute;
  width: 18px;
  height: 18px;
  top: 50%;
  left: 50%;
  margin: -9px 0 0 -9px;
  border: 2px solid transparent;
  border-top-color: currentColor;
  border-radius: 50%;
  animation: btn-spin 0.6s linear infinite;
}

.btn-primary.btn-loading::after {
  border-top-color: white;
}

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

/* ========== CARDS ========== */
.card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.card-header {
  padding: var(--space-5) var(--space-6);
  border-bottom: 1px solid var(--color-border);
}

.card-header h2 {
  font-size: var(--font-size-xl);
  font-weight: 600;
  margin-bottom: var(--space-1);
}

.card-header p {
  font-size: var(--font-size-base);
  color: var(--color-text-muted);
}

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

.card-footer {
  padding: var(--space-5) var(--space-6);
  border-top: 1px solid var(--color-border);
  background: var(--color-surface);
}

.card-hover {
  transition: all var(--transition-base);
}

.card-hover:hover {
  box-shadow: var(--shadow-md);
  border-color: var(--color-text-light);
}

/* ========== FORMS ========== */
.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.form-label {
  font-size: var(--font-size-base);
  font-weight: 500;
  color: var(--color-text);
}

.form-label-optional {
  color: var(--color-text-light);
  font-weight: 400;
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  font-family: var(--font-sans);
  font-size: var(--font-size-md);
  color: var(--color-text);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  transition: all var(--transition-base);
  outline: none;
}

.form-input:hover,
.form-select:hover,
.form-textarea:hover {
  border-color: var(--color-text-light);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-light);
}

.form-input:disabled,
.form-select:disabled,
.form-textarea:disabled {
  background: var(--color-surface);
  color: var(--color-text-muted);
  cursor: not-allowed;
}

.form-textarea {
  min-height: 100px;
  resize: vertical;
}

.form-hint {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

.form-error {
  font-size: var(--font-size-sm);
  color: var(--color-error);
}

.form-input-error {
  border-color: var(--color-error);
}

.form-input-error:focus {
  box-shadow: 0 0 0 3px var(--color-error-light);
}

.form-row {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-5);
}

.form-row-single {
  grid-template-columns: 1fr;
}

.form-actions {
  display: flex;
  justify-content: flex-end;
  gap: var(--space-3);
  padding-top: var(--space-2);
}

/* ========== ALERTS ========== */
.alert {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  padding: var(--space-4);
  border-radius: var(--radius);
  font-size: var(--font-size-base);
  margin-bottom: var(--space-5);
  opacity: 0;
  transform: translateY(-8px);
  transition: all var(--transition-slow);
}

.alert.visible {
  opacity: 1;
  transform: translateY(0);
}

.alert svg {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
}

.alert-success {
  background: var(--color-success-light);
  color: #065f46;
}

.alert-error {
  background: var(--color-error-light);
  color: #991b1b;
}

.alert-warning {
  background: var(--color-warning-light);
  color: #92400e;
}

.alert-info {
  background: var(--color-primary-light);
  color: #1e40af;
}

/* Toast Notifications */
.toast-container {
  position: fixed;
  top: var(--space-6);
  right: var(--space-6);
  z-index: var(--z-tooltip);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  pointer-events: none;
}

.toast {
  pointer-events: auto;
  min-width: 320px;
  max-width: 420px;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  padding: var(--space-4);
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  opacity: 0;
  transform: translateX(100%);
  transition: all var(--transition-slow);
}

.toast.show {
  opacity: 1;
  transform: translateX(0);
}

.toast-icon {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
}

.toast-content {
  flex: 1;
}

.toast-title {
  font-weight: 500;
  margin-bottom: var(--space-1);
}

.toast-message {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

.toast-close {
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--space-1);
  color: var(--color-text-muted);
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
}

.toast-close:hover {
  background: var(--color-surface);
  color: var(--color-text);
}

/* ========== BADGES ========== */
.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-1) var(--space-3);
  font-size: var(--font-size-xs);
  font-weight: 500;
  border-radius: var(--radius-full);
  white-space: nowrap;
}

.badge svg {
  width: 14px;
  height: 14px;
}

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

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

.badge-warning {
  background: var(--color-warning-light);
  color: var(--color-warning);
}

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

.badge-neutral {
  background: var(--color-surface-alt);
  color: var(--color-text-muted);
}

/* ========== MODALS ========== */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(15, 23, 42, 0.6);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: var(--z-modal);
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-slow);
  padding: var(--space-6);
}

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

.modal {
  background: var(--color-bg);
  border-radius: var(--radius-lg);
  width: 100%;
  max-height: calc(100vh - 48px);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transform: translateY(20px) scale(0.95);
  transition: transform var(--transition-slow);
  box-shadow: var(--shadow-xl);
}

.modal-overlay.open .modal {
  transform: translateY(0) scale(1);
}

.modal-sm {
  max-width: 420px;
}

.modal-md {
  max-width: 600px;
}

.modal-lg {
  max-width: 800px;
}

.modal-header {
  padding: var(--space-6);
  border-bottom: 1px solid var(--color-border);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.modal-title {
  font-size: var(--font-size-2xl);
  font-weight: 600;
}

.modal-close {
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--space-2);
  color: var(--color-text-muted);
  border-radius: var(--radius);
  transition: all var(--transition-base);
  display: flex;
  align-items: center;
  justify-content: center;
}

.modal-close:hover {
  background: var(--color-surface);
  color: var(--color-text);
}

.modal-close svg {
  width: 20px;
  height: 20px;
}

.modal-body {
  padding: var(--space-6);
  overflow-y: auto;
  flex: 1;
}

.modal-footer {
  padding: var(--space-5) var(--space-6);
  border-top: 1px solid var(--color-border);
  display: flex;
  justify-content: flex-end;
  gap: var(--space-3);
}

/* ========== EMPTY STATES ========== */
.empty-state {
  text-align: center;
  padding: var(--space-16) var(--space-10);
}

.empty-icon {
  width: 80px;
  height: 80px;
  background: var(--color-surface-alt);
  color: var(--color-text-muted);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--space-6);
}

.empty-icon svg {
  width: 40px;
  height: 40px;
}

.empty-state h3 {
  font-size: var(--font-size-2xl);
  font-weight: 600;
  margin-bottom: var(--space-2);
}

.empty-state p {
  color: var(--color-text-muted);
  font-size: var(--font-size-md);
  max-width: 400px;
  margin: 0 auto var(--space-6);
}

/* ========== LOADING ========== */
.spinner {
  width: 48px;
  height: 48px;
  border: 3px solid var(--color-border);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: spinner-spin 0.8s linear infinite;
}

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

.spinner-sm {
  width: 24px;
  height: 24px;
  border-width: 2px;
}

.loading-screen {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--color-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: var(--z-modal);
}

.loading-content {
  text-align: center;
}

.loading-content .spinner {
  margin: 0 auto var(--space-4);
}

.loading-content p {
  color: var(--color-text-muted);
  font-size: var(--font-size-base);
}

/* Skeleton Loaders */
.skeleton {
  background: linear-gradient(
    90deg,
    var(--color-surface-alt) 25%,
    var(--color-surface) 50%,
    var(--color-surface-alt) 75%
  );
  background-size: 200% 100%;
  animation: skeleton-loading 1.5s ease-in-out infinite;
  border-radius: var(--radius);
}

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

.skeleton-text {
  height: 16px;
  margin-bottom: var(--space-2);
}

.skeleton-title {
  height: 24px;
  width: 60%;
  margin-bottom: var(--space-4);
}

.skeleton-card {
  height: 200px;
}