/**
 * Main Styles - Common Components
 * Buttons, forms, cards, modals, tables, navigation, etc.
 */

/* === BUTTONS === */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-4);
  font-size: var(--font-size-base);
  font-weight: 500;
  line-height: 1.5;
  text-align: center;
  text-decoration: none;
  border: 1px solid transparent;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-base);
  white-space: nowrap;
}

.btn:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

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

.btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
}

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

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

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

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

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

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

.btn-warning {
  background: var(--color-warning);
  color: var(--color-text);
  border-color: var(--color-warning);
}

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

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

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

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

.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-lg);
}

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

.btn-icon {
  padding: var(--space-2);
  aspect-ratio: 1;
}

/* === FORMS === */
.form-group {
  margin-bottom: var(--space-4);
}

.form-label {
  display: block;
  margin-bottom: var(--space-2);
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--color-text);
}

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

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: var(--space-3);
  font-size: var(--font-size-base);
  font-family: inherit;
  line-height: 1.5;
  color: var(--color-text);
  background: var(--color-background);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: all var(--transition-base);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.form-input:disabled,
.form-select:disabled,
.form-textarea:disabled {
  background: var(--color-surface);
  cursor: not-allowed;
  opacity: 0.6;
}

.form-input.error,
.form-select.error,
.form-textarea.error {
  border-color: var(--color-danger);
}

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

.form-error {
  display: block;
  margin-top: var(--space-2);
  font-size: var(--font-size-sm);
  color: var(--color-danger);
}

.form-help {
  display: block;
  margin-top: var(--space-2);
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

.form-check {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.form-check-input {
  width: 18px;
  height: 18px;
  cursor: pointer;
}

.form-check-label {
  cursor: pointer;
  user-select: none;
}

.form-inline {
  display: flex;
  gap: var(--space-3);
  align-items: flex-end;
}

.form-inline .form-group {
  flex: 1;
  margin-bottom: 0;
}

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

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

.card-header {
  padding: var(--space-4);
  border-bottom: 1px solid var(--color-border);
  background: var(--color-background);
}

.card-title {
  margin: 0;
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: var(--color-text);
}

.card-body {
  padding: var(--space-4);
}

.card-footer {
  padding: var(--space-4);
  border-top: 1px solid var(--color-border);
  background: var(--color-background);
}

.card-img-top {
  width: 100%;
  height: auto;
  display: block;
}

/* === BADGES === */
.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-1) var(--space-2);
  font-size: var(--font-size-xs);
  font-weight: 600;
  line-height: 1;
  border-radius: var(--radius-full);
  white-space: nowrap;
}

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

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

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

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

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

/* === ALERTS === */
.alert {
  padding: var(--space-4);
  border-radius: var(--radius-md);
  border-left: 4px solid;
  margin-bottom: var(--space-4);
}

.alert-success {
  background: var(--color-success-light);
  border-color: var(--color-success);
  color: var(--color-success-dark);
}

.alert-warning {
  background: var(--color-warning-light);
  border-color: var(--color-warning);
  color: var(--color-warning-dark);
}

.alert-danger {
  background: var(--color-danger-light);
  border-color: var(--color-danger);
  color: var(--color-danger-dark);
}

.alert-info {
  background: var(--color-info-light);
  border-color: var(--color-info);
  color: var(--color-info-dark);
}

/* === TABLES === */
.table-container {
  overflow-x: auto;
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
}

.table {
  width: 100%;
  border-collapse: collapse;
  background: var(--color-surface);
}

.table th,
.table td {
  padding: var(--space-3) var(--space-4);
  text-align: left;
  border-bottom: 1px solid var(--color-border);
}

.table th {
  font-weight: 600;
  background: var(--color-background);
  color: var(--color-text);
  white-space: nowrap;
}

.table tbody tr:hover {
  background: var(--color-background);
}

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

.table-striped tbody tr:nth-child(even) {
  background: var(--color-background);
}

/* === MODALS === */
.modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 1000;
  display: none;
  align-items: center;
  justify-content: center;
  padding: var(--space-4);
}

.modal.active {
  display: flex;
}

.modal-backdrop {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(4px);
}

.modal-dialog {
  position: relative;
  width: 100%;
  max-width: 500px;
  max-height: 90vh;
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
  display: flex;
  flex-direction: column;
  animation: modalSlideIn 0.3s ease-out;
}

@keyframes modalSlideIn {
  from {
    opacity: 0;
    transform: translateY(-50px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

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

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

.modal-header h3 {
  margin: 0;
  font-size: var(--font-size-xl);
  font-weight: 600;
}

.modal-close {
  background: none;
  border: none;
  font-size: 24px;
  cursor: pointer;
  color: var(--color-text-secondary);
  padding: var(--space-2);
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
}

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

.modal-body {
  padding: var(--space-4);
  overflow-y: auto;
  flex: 1;
}

.modal-footer {
  display: flex;
  gap: var(--space-3);
  justify-content: flex-end;
  padding: var(--space-4);
  border-top: 1px solid var(--color-border);
}

/* === LOADING SPINNER === */
.loading-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(255, 255, 255, 0.9);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9999;
}

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

.spinner {
  width: 48px;
  height: 48px;
  border: 4px solid var(--color-border);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  margin: 0 auto var(--space-3);
}

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

.loading-text {
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
}

/* === NAVIGATION === */
.header {
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--shadow-sm);
}

.header-container {
  max-width: var(--container-lg);
  margin: 0 auto;
  padding: var(--space-4);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
}

.logo {
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--color-primary);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.nav-menu {
  display: flex;
  gap: var(--space-2);
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-link {
  padding: var(--space-2) var(--space-3);
  color: var(--color-text-secondary);
  text-decoration: none;
  border-radius: var(--radius-md);
  transition: all var(--transition-base);
  font-weight: 500;
}

.nav-link:hover,
.nav-link.active {
  background: var(--color-background);
  color: var(--color-primary);
}

.mobile-menu-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 24px;
  cursor: pointer;
  padding: var(--space-2);
  color: var(--color-text);
}

@media (max-width: 768px) {
  .mobile-menu-toggle {
    display: block;
  }

  .nav-menu {
    position: fixed;
    top: 73px;
    left: 0;
    right: 0;
    background: var(--color-surface);
    flex-direction: column;
    padding: var(--space-4);
    box-shadow: var(--shadow-lg);
    display: none;
  }

  .nav-menu.active {
    display: flex;
  }
}

/* === FOOTER === */
.footer {
  background: var(--color-text);
  color: white;
  padding: var(--space-8) var(--space-4);
  margin-top: var(--space-8);
}

.footer-container {
  max-width: var(--container-lg);
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--space-6);
}

.footer-section h3 {
  margin-bottom: var(--space-3);
  font-size: var(--font-size-lg);
}

.footer-section p,
.footer-section a {
  color: rgba(255, 255, 255, 0.8);
  margin-bottom: var(--space-2);
  text-decoration: none;
  display: block;
}

.footer-section a:hover {
  color: white;
}

.footer-social {
  display: flex;
  gap: var(--space-3);
  margin-top: var(--space-3);
}

.social-link {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-full);
  transition: all var(--transition-base);
}

.social-link:hover {
  background: var(--color-primary);
  transform: translateY(-2px);
}

.footer-bottom {
  text-align: center;
  padding-top: var(--space-6);
  margin-top: var(--space-6);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  color: rgba(255, 255, 255, 0.6);
}

/* === PAGINATION === */
.pagination {
  display: flex;
  gap: var(--space-2);
  justify-content: center;
  align-items: center;
  margin: var(--space-6) 0;
}

.pagination-btn {
  min-width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-text);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-base);
}

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

.pagination-btn.active {
  background: var(--color-primary);
  color: white;
  border-color: var(--color-primary);
}

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

/* === UTILITY CLASSES === */
.container {
  max-width: var(--container-lg);
  margin: 0 auto;
  padding: 0 var(--space-4);
}

.container-sm {
  max-width: var(--container-sm);
  margin: 0 auto;
  padding: 0 var(--space-4);
}

.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.text-primary { color: var(--color-primary); }
.text-success { color: var(--color-success); }
.text-danger { color: var(--color-danger); }
.text-warning { color: var(--color-warning); }
.text-secondary { color: var(--color-text-secondary); }
.text-muted { color: var(--color-text-secondary); opacity: 0.7; }

.fw-normal { font-weight: 400; }
.fw-medium { font-weight: 500; }
.fw-bold { font-weight: 600; }

.d-none { display: none; }
.d-block { display: block; }
.d-flex { display: flex; }
.d-grid { display: grid; }
.d-inline-flex { display: inline-flex; }

.flex-column { flex-direction: column; }
.flex-wrap { flex-wrap: wrap; }
.align-center { align-items: center; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.gap-2 { gap: var(--space-2); }
.gap-3 { gap: var(--space-3); }
.gap-4 { gap: var(--space-4); }

.mt-0 { margin-top: 0; }
.mt-2 { margin-top: var(--space-2); }
.mt-3 { margin-top: var(--space-3); }
.mt-4 { margin-top: var(--space-4); }
.mb-0 { margin-bottom: 0; }
.mb-2 { margin-bottom: var(--space-2); }
.mb-3 { margin-bottom: var(--space-3); }
.mb-4 { margin-bottom: var(--space-4); }

.p-0 { padding: 0; }
.p-2 { padding: var(--space-2); }
.p-3 { padding: var(--space-3); }
.p-4 { padding: var(--space-4); }

.w-full { width: 100%; }
.h-full { height: 100%; }

/* === RESPONSIVE === */
@media (max-width: 768px) {
  .hide-mobile { display: none; }
}

@media (min-width: 769px) {
  .hide-desktop { display: none; }
}