/* ============================================
   COMPONENTS - Professional UI Elements
   ============================================ */

/* Buttons - Refined professional styling */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 0.75rem 1.5rem;
  font-size: var(--text-base);
  font-weight: var(--font-semibold);
  border-radius: var(--radius-lg);
  transition: all var(--transition-base);
  cursor: pointer;
  border: none;
  text-decoration: none;
  letter-spacing: -0.01em;
}

.btn-primary {
  background: var(--primary-blue);
  color: #FFFFFF;
  box-shadow: none;
}

.btn-primary:hover {
  background: var(--primary-blue-hover);
  box-shadow: none;
}

.btn-primary:active {
  transform: none;
  box-shadow: none;
}

.btn-secondary {
  background: var(--neutral-100);
  color: var(--neutral-600);
  border: 1px solid var(--neutral-200);
}

.btn-secondary:hover {
  background: var(--neutral-200);
  border-color: var(--neutral-300);
}

.btn-outline {
  background: transparent;
  border: 1.5px solid var(--neutral-300);
  color: var(--neutral-700);
}

.btn-outline:hover {
  border-color: var(--primary-blue);
  color: var(--primary-blue);
}

.btn-success {
  background: var(--success-500);
  color: white;
}

.btn-success:hover {
  background: var(--success-600);
}

.btn-large {
  padding: 1rem 2rem;
  font-size: var(--text-lg);
}

.btn-small {
  padding: 0.5rem 1rem;
  font-size: var(--text-sm);
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none !important;
}

.btn:focus-visible {
  outline: 2px solid var(--primary-blue);
  outline-offset: 2px;
}

/* Cards - Professional depth and spacing */
.card {
  background: #FFFFFF;
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  box-shadow: 0 12px 28px rgba(28, 28, 30, 0.08);
  transition: all var(--transition-base);
  border: 1px solid var(--neutral-200);
}

.card:hover {
  box-shadow: 0 20px 40px rgba(28, 28, 30, 0.12);
  transform: translateY(-2px);
  border-color: var(--neutral-200);
}

.card-header {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding-bottom: var(--space-4);
  border-bottom: 1px solid var(--neutral-200);
  margin-bottom: var(--space-4);
}

.card-title {
  font-size: var(--text-xl);
  font-weight: var(--font-semibold);
  color: var(--neutral-900);
  margin-bottom: 0;
  letter-spacing: -0.01em;
}

.card-body {
  color: var(--neutral-700);
  line-height: var(--leading-relaxed);
}

.card-footer {
  padding-top: var(--space-4);
  border-top: 1px solid var(--neutral-200);
  margin-top: var(--space-4);
}

/* Badges - Refined status indicators */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 0.375rem 0.875rem;
  font-size: var(--text-xs);
  font-weight: var(--font-semibold);
  border-radius: var(--radius-full);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

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

.badge-success {
  background: var(--success-50);
  color: var(--success-600);
}

.badge-warning {
  background: var(--warning-50);
  color: var(--warning-500);
}

.badge-error {
  background: var(--error-50);
  color: var(--error-600);
}

/* Form Elements - Professional inputs */
.form-group {
  margin-bottom: var(--space-4);
}

.form-label {
  display: block;
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  color: var(--neutral-700);
  margin-bottom: var(--space-2);
  letter-spacing: -0.01em;
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: 0.75rem 1rem;
  font-size: var(--text-base);
  border: 1px solid var(--neutral-300);
  border-radius: var(--radius-lg);
  background: white;
  transition: all var(--transition-base);
  color: var(--neutral-900);
}

.form-input:hover,
.form-select:hover,
.form-textarea:hover {
  border-color: var(--neutral-300);
}

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

.form-input::placeholder {
  color: var(--neutral-400);
}

.form-textarea {
  resize: vertical;
  min-height: 120px;
  line-height: var(--leading-relaxed);
}

.form-hint {
  display: block;
  font-size: var(--text-xs);
  color: var(--neutral-500);
  margin-top: var(--space-1);
}

.form-error {
  display: block;
  font-size: var(--text-sm);
  color: var(--error-500);
  margin-top: var(--space-1);
  font-weight: var(--font-medium);
}

.form-input.error,
.form-select.error,
.form-textarea.error {
  border-color: var(--error-500);
}

/* SVG icon helpers */
.svg-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: inherit;
}

.svg-icon svg {
  width: 20px;
  height: 20px;
  display: block;
  fill: none;
  stroke: currentColor;
}

.section-title {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-size: var(--text-lg);
  font-weight: var(--font-semibold);
  color: var(--neutral-800);
}

.section-title .svg-icon svg {
  width: 22px;
  height: 22px;
}

/* Modals - Professional overlays */
.modal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(15, 23, 42, 0.7);
  backdrop-filter: blur(8px);
  z-index: var(--z-modal-backdrop);
  justify-content: center;
  align-items: center;
  padding: var(--space-4);
}

.modal.active {
  display: flex;
}

.modal-content {
  background: white;
  border-radius: var(--radius-2xl);
  box-shadow: var(--shadow-2xl);
  max-width: 600px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  position: relative;
  animation: modalSlideIn 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

@keyframes modalSlideIn {
  from {
    opacity: 0;
    transform: translateY(20px) scale(0.96);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

.modal-header {
  padding: var(--space-6);
  border-bottom: 1px solid var(--neutral-200);
}

.modal-title {
  font-size: var(--text-2xl);
  font-weight: var(--font-bold);
  margin-bottom: 0;
  color: var(--neutral-900);
  letter-spacing: -0.02em;
}

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

.modal-footer {
  padding: var(--space-6);
  border-top: 1px solid var(--neutral-200);
  display: flex;
  gap: var(--space-3);
  justify-content: flex-end;
}

.modal-close {
  position: absolute;
  top: var(--space-4);
  right: var(--space-4);
  width: 36px;
  height: 36px;
  border-radius: var(--radius-md);
  background: var(--neutral-100);
  color: var(--neutral-600);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-xl);
  cursor: pointer;
  transition: all var(--transition-base);
  border: none;
}

.modal-close:hover {
  background: var(--neutral-200);
  color: var(--neutral-900);
}

/* Alerts - Professional notifications */
.alert {
  padding: var(--space-4);
  border-radius: var(--radius-lg);
  border-left: 4px solid;
  margin-bottom: var(--space-4);
  font-size: var(--text-sm);
  line-height: var(--leading-relaxed);
}

.alert-success {
  background: var(--success-50);
  border-color: var(--success-500);
  color: var(--success-700);
}

.alert-warning {
  background: var(--warning-50);
  border-color: var(--warning-500);
  color: var(--warning-600);
}

.alert-error {
  background: var(--error-50);
  border-color: var(--error-500);
  color: var(--error-600);
}

.alert-info {
  background: var(--info-50);
  border-color: var(--info-500);
  color: var(--info-600);
}

/* Loading Spinner - Professional animation */
.spinner {
  display: inline-block;
  width: 20px;
  height: 20px;
  border: 3px solid var(--neutral-200);
  border-top-color: var(--primary-blue);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

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

.spinner-large {
  width: 40px;
  height: 40px;
  border-width: 4px;
}

/* Tabs - Professional navigation */
.tabs {
  display: flex;
  gap: var(--space-2);
  border-bottom: 2px solid var(--neutral-200);
  margin-bottom: var(--space-6);
  overflow-x: auto;
  scrollbar-width: none;
}

.tabs::-webkit-scrollbar {
  display: none;
}

.tab {
  padding: var(--space-3) var(--space-5);
  font-size: var(--text-base);
  font-weight: var(--font-medium);
  color: var(--neutral-500);
  background: transparent;
  border: none;
  border-bottom: 2px solid transparent;
  cursor: pointer;
  transition: all var(--transition-base);
  white-space: nowrap;
  position: relative;
  bottom: -2px;
  letter-spacing: -0.01em;
}

.tab:hover {
  color: var(--neutral-700);
}

.tab.active {
  color: var(--primary-blue);
  border-bottom-color: var(--primary-blue);
}

/* Pills/Tags - Refined selectors */
.pill {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: 0.625rem 1rem;
  background: white;
  border: 1px solid var(--neutral-200);
  border-radius: var(--radius-full);
  font-size: var(--text-sm);
  color: var(--neutral-700);
  cursor: pointer;
  transition: all var(--transition-base);
  font-weight: var(--font-medium);
}

.pill:hover {
  background: var(--primary-blue);
  color: white;
  border-color: var(--primary-blue);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

/* Tooltips - Professional overlays */
.tooltip {
  position: relative;
}

.tooltip::before {
  content: attr(data-tooltip);
  position: absolute;
  bottom: 100%;
  left: 50%;
  transform: translateX(-50%) translateY(-8px);
  padding: var(--space-2) var(--space-3);
  background: var(--neutral-900);
  color: white;
  font-size: var(--text-xs);
  border-radius: var(--radius-md);
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-base);
  z-index: var(--z-tooltip);
}

.tooltip:hover::before {
  opacity: 1;
}

/* Divider - Clean separator */
.divider {
  height: 1px;
  background: var(--neutral-200);
  margin: var(--space-6) 0;
}

/* Avatar - Professional user image */
.avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid var(--neutral-200);
}

.avatar-small {
  width: 32px;
  height: 32px;
}

.avatar-large {
  width: 64px;
  height: 64px;
}

/* Glass Effect - Modern translucent */
.glass {
  background: var(--glass-bg);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border: 1px solid var(--glass-border);
}

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

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

.skeleton-text {
  height: 1em;
  margin-bottom: var(--space-2);
}

.skeleton-title {
  height: 1.5em;
  width: 60%;
  margin-bottom: var(--space-3);
}

.skeleton-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
}

/* Progress Bar - Professional indicator */
.progress {
  height: 8px;
  background: var(--neutral-200);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.progress-bar {
  height: 100%;
  background: var(--primary-blue);
  border-radius: var(--radius-full);
  transition: width var(--transition-smooth);
}

/* Responsive Adjustments */
@media (max-width: 768px) {
  .modal-content {
    margin: var(--space-4);
  }
  
  .btn-large {
    padding: 0.875rem 1.5rem;
    font-size: var(--text-base);
  }
  
  .card {
    padding: var(--space-4);
  }
}