/* ═══════════════════════════════════════════════════════════════
   Shared Component Library
   Imports AFTER variables.css
   app-exams.com — Web Interface
   ═══════════════════════════════════════════════════════════════ */

/* ───────────────────────────────────────────────────────────────
   1. Buttons
   ─────────────────────────────────────────────────────────────── */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 0.625rem 1.5rem;
  font-family: inherit;
  font-size: var(--text-sm);
  font-weight: 600;
  line-height: var(--leading-normal);
  text-decoration: none;
  border: 2px solid transparent;
  border-radius: var(--radius-sm);
  cursor: pointer;
  user-select: none;
  white-space: nowrap;
  transition: background-color var(--transition-base),
              border-color var(--transition-base),
              color var(--transition-base),
              box-shadow var(--transition-base),
              transform var(--transition-fast);
}

.btn:active:not(:disabled) {
  transform: scale(0.97);
}

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

/* Primary */
.btn-primary {
  background-color: var(--color-primary);
  color: var(--text-inverse);
}

.btn-primary:hover {
  background-color: var(--color-primary-dark);
  box-shadow: var(--shadow-md), 0 0 0 3px rgba(37, 99, 235, 0.2);
}

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

/* Secondary */
.btn-secondary {
  background-color: var(--color-secondary);
  color: var(--text-inverse);
}

.btn-secondary:hover {
  background-color: #0284C7;
  box-shadow: var(--shadow-md), 0 0 0 3px rgba(14, 165, 233, 0.2);
}

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

.btn-outline:hover {
  background-color: var(--color-primary);
  color: var(--text-inverse);
  box-shadow: var(--shadow-md);
}

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

.btn-ghost:hover {
  background-color: var(--bg-tertiary);
  color: var(--text-primary);
}

/* Danger */
.btn-danger {
  background-color: var(--color-danger);
  color: var(--text-inverse);
}

.btn-danger:hover {
  background-color: #DC2626;
  box-shadow: var(--shadow-md), 0 0 0 3px rgba(239, 68, 68, 0.2);
}

/* Success */
.btn-success {
  background-color: var(--color-success);
  color: var(--text-inverse);
}

.btn-success:hover {
  background-color: #059669;
  box-shadow: var(--shadow-md), 0 0 0 3px rgba(16, 185, 129, 0.2);
}

/* Sizes */
.btn-sm {
  padding: 0.375rem 0.875rem;
  font-size: var(--text-xs);
  border-radius: var(--radius-sm);
}

.btn-lg {
  padding: 0.8125rem 2rem;
  font-size: var(--text-lg);
  border-radius: var(--radius-md);
}

/* Icon-only button */
.btn-icon {
  width: 2.5rem;
  height: 2.5rem;
  padding: 0;
  border-radius: var(--radius-full);
}

.btn-icon.btn-sm {
  width: 2rem;
  height: 2rem;
}

.btn-icon.btn-lg {
  width: 3rem;
  height: 3rem;
}

/* Button group */
.btn-group {
  display: inline-flex;
}

.btn-group .btn {
  border-radius: 0;
}

.btn-group .btn:first-child {
  border-radius: var(--radius-sm) 0 0 var(--radius-sm);
}

.btn-group .btn:last-child {
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

[dir="rtl"] .btn-group .btn:first-child {
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

[dir="rtl"] .btn-group .btn:last-child {
  border-radius: var(--radius-sm) 0 0 var(--radius-sm);
}


/* ───────────────────────────────────────────────────────────────
   2. Cards
   ─────────────────────────────────────────────────────────────── */

.card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: var(--space-6);
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition-base),
              transform var(--transition-base),
              border-color var(--transition-base);
}

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

.card-elevated:hover {
  box-shadow: var(--shadow-xl);
  transform: translateY(-2px);
}

.card-glass {
  background: var(--gradient-glass);
  background-color: rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(255, 255, 255, 0.15);
  box-shadow: var(--shadow-lg);
}

.card-glass:hover {
  border-color: rgba(255, 255, 255, 0.25);
  box-shadow: var(--shadow-xl);
}

.card-header {
  margin: calc(-1 * var(--space-6));
  margin-bottom: var(--space-6);
  padding: var(--space-4) var(--space-6);
  border-bottom: 1px solid var(--border-color);
  border-radius: var(--radius-md) var(--radius-md) 0 0;
  font-weight: 600;
  font-size: var(--text-lg);
}

.card-body {
  flex: 1;
}

.card-footer {
  margin: calc(-1 * var(--space-6));
  margin-top: var(--space-6);
  padding: var(--space-4) var(--space-6);
  border-top: 1px solid var(--border-color);
  border-radius: 0 0 var(--radius-md) var(--radius-md);
}

.card-img-top {
  width: 100%;
  border-radius: var(--radius-md) var(--radius-md) 0 0;
  object-fit: cover;
}


/* ───────────────────────────────────────────────────────────────
   3. Modals
   ─────────────────────────────────────────────────────────────── */

.modal-overlay {
  position: fixed;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--bg-overlay);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  z-index: var(--z-modal-backdrop);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-base),
              visibility var(--transition-base);
}

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

.modal-content {
  position: relative;
  width: 90%;
  max-width: 520px;
  max-height: 85vh;
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-2xl);
  z-index: var(--z-modal);
  overflow: hidden;
  transform: scale(0.92) translateY(20px);
  transition: transform var(--transition-slow);
}

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

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-5) var(--space-6);
  border-bottom: 1px solid var(--border-color);
}

.modal-header h2,
.modal-header h3 {
  margin: 0;
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--text-primary);
}

.modal-close {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2rem;
  height: 2rem;
  padding: 0;
  background: transparent;
  border: none;
  border-radius: var(--radius-full);
  color: var(--text-muted);
  cursor: pointer;
  transition: background-color var(--transition-fast),
              color var(--transition-fast);
}

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

.modal-body {
  padding: var(--space-6);
  overflow-y: auto;
  max-height: calc(85vh - 8rem);
  color: var(--text-secondary);
  line-height: var(--leading-relaxed);
}

.modal-footer {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: var(--space-3);
  padding: var(--space-4) var(--space-6);
  border-top: 1px solid var(--border-color);
}

.modal-footer .btn {
  min-width: 6rem;
}

/* RTL */
[dir="rtl"] .modal-header {
  flex-direction: row-reverse;
}

[dir="rtl"] .modal-footer {
  justify-content: flex-start;
}

[dir="rtl"] .modal-close {
  margin-right: auto;
  margin-left: 0;
}


/* ───────────────────────────────────────────────────────────────
   4. Navbar
   ─────────────────────────────────────────────────────────────── */

.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--navbar-height);
  padding: 0 var(--space-8);
  background-color: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  z-index: var(--z-navbar);
  transition: background-color var(--transition-base),
              border-color var(--transition-base),
              box-shadow var(--transition-base);
}

.navbar.scrolled {
  background-color: rgba(255, 255, 255, 0.95);
  border-bottom-color: var(--border-color);
  box-shadow: var(--shadow-sm);
}

.navbar-brand {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--text-primary);
  text-decoration: none;
}

.navbar-brand img {
  height: 36px;
  width: auto;
}

.navbar-nav {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  list-style: none;
  margin: 0;
  padding: 0;
}

.navbar-nav .nav-link {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-3);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--text-secondary);
  text-decoration: none;
  border-radius: var(--radius-sm);
  transition: color var(--transition-fast),
              background-color var(--transition-fast);
}

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

.navbar-actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.navbar.scrolled {
  --navbar-bg: var(--bg-primary);
}

/* RTL */
[dir="rtl"] .navbar {
  flex-direction: row-reverse;
}


/* ───────────────────────────────────────────────────────────────
   5. Language Switcher
   ─────────────────────────────────────────────────────────────── */

.language-switcher {
  position: relative;
}

.lang-btn {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-3);
  background-color: transparent;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  font-family: inherit;
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--text-secondary);
  cursor: pointer;
  transition: border-color var(--transition-fast),
              color var(--transition-fast),
              background-color var(--transition-fast);
}

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

.lang-dropdown {
  position: absolute;
  top: calc(100% + var(--space-2));
  left: 0;
  min-width: 160px;
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-lg);
  z-index: var(--z-dropdown);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
  transition: opacity var(--transition-fast),
              visibility var(--transition-fast),
              transform var(--transition-fast);
}

.lang-dropdown.show {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.lang-option {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  width: 100%;
  padding: var(--space-3) var(--space-4);
  background: none;
  border: none;
  font-family: inherit;
  font-size: var(--text-sm);
  color: var(--text-secondary);
  cursor: pointer;
  text-align: start;
  transition: background-color var(--transition-fast),
              color var(--transition-fast);
}

.lang-option:hover {
  background-color: var(--bg-tertiary);
  color: var(--text-primary);
}

.lang-option.active {
  color: var(--color-primary);
  font-weight: 600;
  background-color: rgba(37, 99, 235, 0.05);
}

.lang-option .lang-flag {
  width: 20px;
  height: 14px;
  border-radius: 2px;
  object-fit: cover;
}

/* RTL */
[dir="rtl"] .lang-dropdown {
  left: auto;
  right: 0;
}

[dir="rtl"] .lang-option {
  text-align: right;
}


/* ───────────────────────────────────────────────────────────────
   6. Toast Notifications
   ─────────────────────────────────────────────────────────────── */

.toast-container {
  position: fixed;
  top: calc(var(--navbar-height) + var(--space-4));
  right: var(--space-6);
  z-index: var(--z-toast);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  pointer-events: none;
}

.toast {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  min-width: 320px;
  max-width: 440px;
  padding: var(--space-4) var(--space-5);
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-xl);
  pointer-events: all;
  transform: translateX(110%);
  opacity: 0;
  transition: transform var(--transition-slow),
              opacity var(--transition-base);
}

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

.toast-icon {
  flex-shrink: 0;
  width: 22px;
  height: 22px;
  margin-top: 1px;
}

.toast-body {
  flex: 1;
  min-width: 0;
}

.toast-title {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--text-primary);
  margin: 0 0 var(--space-1);
}

.toast-message {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  margin: 0;
  line-height: var(--leading-normal);
}

.toast-close {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 1.5rem;
  height: 1.5rem;
  padding: 0;
  background: none;
  border: none;
  border-radius: var(--radius-sm);
  color: var(--text-muted);
  cursor: pointer;
  transition: background-color var(--transition-fast),
              color var(--transition-fast);
}

.toast-close:hover {
  background-color: var(--bg-tertiary);
  color: var(--text-primary);
}

/* Toast variants — left border accent */
.toast-success {
  border-left: 4px solid var(--color-success);
}

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

.toast-error {
  border-left: 4px solid var(--color-danger);
}

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

.toast-info {
  border-left: 4px solid var(--color-info);
}

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

/* RTL: toast slides from left, border on right */
[dir="rtl"] .toast-container {
  right: auto;
  left: var(--space-6);
  align-items: flex-end;
}

[dir="rtl"] .toast {
  transform: translateX(-110%);
}

[dir="rtl"] .toast.show {
  transform: translateX(0);
}

[dir="rtl"] .toast-success,
[dir="rtl"] .toast-error,
[dir="rtl"] .toast-info {
  border-left: none;
  border-right: 4px solid currentColor;
}

[dir="rtl"] .toast-success {
  border-right-color: var(--color-success);
}

[dir="rtl"] .toast-error {
  border-right-color: var(--color-danger);
}

[dir="rtl"] .toast-info {
  border-right-color: var(--color-info);
}


/* ───────────────────────────────────────────────────────────────
   7. Form Elements
   ─────────────────────────────────────────────────────────────── */

.form-group {
  margin-bottom: var(--space-5);
}

.form-label {
  display: block;
  margin-bottom: var(--space-2);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--text-primary);
}

.form-label .required {
  color: var(--color-danger);
  margin-inline-start: 2px;
}

.form-input,
.form-textarea,
.form-select {
  display: block;
  width: 100%;
  padding: 0.625rem var(--space-4);
  font-family: inherit;
  font-size: var(--text-sm);
  line-height: var(--leading-normal);
  color: var(--text-primary);
  background-color: var(--bg-card);
  border: 1.5px solid var(--border-color);
  border-radius: var(--radius-sm);
  transition: border-color var(--transition-fast),
              box-shadow var(--transition-fast),
              background-color var(--transition-fast);
  outline: none;
}

.form-input::placeholder,
.form-textarea::placeholder {
  color: var(--text-muted);
}

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

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
  border-color: var(--border-focus);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}

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

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

.form-input.error:focus,
.form-textarea.error:focus,
.form-select.error:focus {
  box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.15);
}

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

.form-select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%2394A3B8' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right var(--space-3) center;
  padding-inline-end: var(--space-10);
}

[dir="rtl"] .form-select {
  background-position: left var(--space-3) center;
  padding-inline-end: var(--space-4);
  padding-inline-start: var(--space-10);
}

.form-help {
  display: block;
  margin-top: var(--space-1);
  font-size: var(--text-xs);
  color: var(--text-muted);
  line-height: var(--leading-normal);
}

.form-help.error {
  color: var(--color-danger);
}

/* Checkbox & Radio */
.form-checkbox,
.form-radio {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  cursor: pointer;
  font-size: var(--text-sm);
  color: var(--text-secondary);
  user-select: none;
}

.form-checkbox input[type="checkbox"],
.form-radio input[type="radio"] {
  width: 18px;
  height: 18px;
  accent-color: var(--color-primary);
  cursor: pointer;
}

.form-radio input[type="radio"] {
  border-radius: var(--radius-full);
}

/* Toggle Switch */
.toggle-switch {
  position: relative;
  display: inline-block;
  width: 44px;
  height: 24px;
}

.toggle-switch input {
  opacity: 0;
  width: 0;
  height: 0;
}

.toggle-slider {
  position: absolute;
  inset: 0;
  background-color: var(--border-color);
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: background-color var(--transition-base);
}

.toggle-slider::before {
  content: '';
  position: absolute;
  width: 18px;
  height: 18px;
  top: 3px;
  left: 3px;
  background-color: var(--bg-card);
  border-radius: var(--radius-full);
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-base);
}

.toggle-switch input:checked + .toggle-slider {
  background-color: var(--color-primary);
}

.toggle-switch input:checked + .toggle-slider::before {
  transform: translateX(20px);
}

[dir="rtl"] .toggle-slider::before {
  left: auto;
  right: 3px;
}

[dir="rtl"] .toggle-switch input:checked + .toggle-slider::before {
  transform: translateX(-20px);
}

/* RTL */
[dir="rtl"] .form-checkbox,
[dir="rtl"] .form-radio {
  flex-direction: row-reverse;
  justify-content: flex-start;
}


/* ───────────────────────────────────────────────────────────────
   8. Badges & Tags
   ─────────────────────────────────────────────────────────────── */

.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: 0.2em 0.65em;
  font-size: var(--text-xs);
  font-weight: 600;
  line-height: 1;
  color: var(--text-inverse);
  background-color: var(--text-muted);
  border-radius: var(--radius-full);
  white-space: nowrap;
  vertical-align: middle;
}

.badge-pro {
  background: var(--gradient-cta);
  color: var(--text-inverse);
  box-shadow: 0 1px 3px rgba(124, 58, 237, 0.3);
}

.badge-free {
  background-color: var(--color-success);
  color: var(--text-inverse);
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-1) var(--space-3);
  font-size: var(--text-xs);
  font-weight: 500;
  color: var(--color-primary);
  background-color: rgba(37, 99, 235, 0.08);
  border: 1px solid rgba(37, 99, 235, 0.2);
  border-radius: var(--radius-sm);
  white-space: nowrap;
  transition: background-color var(--transition-fast);
}

.tag:hover {
  background-color: rgba(37, 99, 235, 0.14);
}

.tag-removable {
  cursor: pointer;
}

.tag-removable .tag-remove {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 14px;
  height: 14px;
  margin-inline-start: var(--space-1);
  padding: 0;
  background: none;
  border: none;
  border-radius: var(--radius-full);
  color: inherit;
  cursor: pointer;
  opacity: 0.6;
  transition: opacity var(--transition-fast),
              background-color var(--transition-fast);
}

.tag-removable .tag-remove:hover {
  opacity: 1;
  background-color: rgba(37, 99, 235, 0.15);
}


/* ───────────────────────────────────────────────────────────────
   9. Skeleton Loaders
   ─────────────────────────────────────────────────────────────── */

.skeleton {
  position: relative;
  overflow: hidden;
  background-color: var(--bg-tertiary);
  border-radius: var(--radius-sm);
  color: transparent !important;
  pointer-events: none;
  user-select: none;
}

.skeleton * {
  visibility: hidden;
}

.skeleton::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(
    90deg,
    transparent 0%,
    rgba(255, 255, 255, 0.5) 50%,
    transparent 100%
  );
  animation: skeleton-shimmer 1.5s infinite;
}

@keyframes skeleton-shimmer {
  0% {
    transform: translateX(-100%);
  }
  100% {
    transform: translateX(100%);
  }
}

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

.skeleton-text:last-child {
  width: 70%;
}

.skeleton-circle {
  border-radius: var(--radius-full);
  aspect-ratio: 1;
}

.skeleton-rect {
  width: 100%;
  aspect-ratio: 16 / 9;
  border-radius: var(--radius-md);
}


/* ───────────────────────────────────────────────────────────────
   10. Tab Bar
   ─────────────────────────────────────────────────────────────── */

.tab-bar {
  display: flex;
  align-items: center;
  gap: 0;
  border-bottom: 2px solid var(--border-color);
  overflow-x: auto;
  scrollbar-width: none;
}

.tab-bar::-webkit-scrollbar {
  display: none;
}

.tab-item {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-5);
  font-family: inherit;
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--text-muted);
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  margin-bottom: -2px;
  cursor: pointer;
  white-space: nowrap;
  transition: color var(--transition-fast),
              border-color var(--transition-fast),
              background-color var(--transition-fast);
}

.tab-item:hover {
  color: var(--text-primary);
  background-color: var(--bg-tertiary);
}

.tab-item.active {
  color: var(--color-primary);
  border-bottom-color: var(--color-primary);
  font-weight: 600;
}

.tab-content {
  padding: var(--space-6) 0;
}

[dir="rtl"] .tab-bar {
  flex-direction: row-reverse;
}


/* ───────────────────────────────────────────────────────────────
   11. Data Tables
   ─────────────────────────────────────────────────────────────── */

.table-wrapper {
  width: 100%;
  overflow-x: auto;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--text-sm);
}

.data-table th {
  padding: var(--space-3) var(--space-4);
  font-weight: 600;
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-secondary);
  background-color: var(--bg-secondary);
  border-bottom: 2px solid var(--border-color);
  text-align: start;
  white-space: nowrap;
  user-select: none;
}

.data-table td {
  padding: var(--space-3) var(--space-4);
  color: var(--text-primary);
  border-bottom: 1px solid var(--border-light);
  vertical-align: middle;
}

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

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

.data-table tbody tr {
  transition: background-color var(--transition-fast);
}

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

.data-table th.sortable {
  cursor: pointer;
}

.data-table th.sortable:hover {
  color: var(--color-primary);
}

.data-table th.sorted-asc::after {
  content: ' \25B2';
  font-size: 0.65em;
}

.data-table th.sorted-desc::after {
  content: ' \25BC';
  font-size: 0.65em;
}


/* ───────────────────────────────────────────────────────────────
   12. Dropdown
   ─────────────────────────────────────────────────────────────── */

.dropdown {
  position: relative;
  display: inline-block;
}

.dropdown-menu {
  position: absolute;
  top: calc(100% + var(--space-2));
  left: 0;
  min-width: 200px;
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-lg);
  z-index: var(--z-dropdown);
  padding: var(--space-2);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
  transition: opacity var(--transition-fast),
              visibility var(--transition-fast),
              transform var(--transition-fast);
}

.dropdown-menu.show {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.dropdown-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  width: 100%;
  padding: var(--space-2) var(--space-3);
  font-family: inherit;
  font-size: var(--text-sm);
  color: var(--text-secondary);
  background: none;
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  text-decoration: none;
  text-align: start;
  transition: background-color var(--transition-fast),
              color var(--transition-fast);
}

.dropdown-item:hover {
  background-color: var(--bg-tertiary);
  color: var(--text-primary);
}

.dropdown-item.active {
  color: var(--color-primary);
  background-color: rgba(37, 99, 235, 0.06);
  font-weight: 500;
}

.dropdown-item.danger {
  color: var(--color-danger);
}

.dropdown-item.danger:hover {
  background-color: rgba(239, 68, 68, 0.06);
  color: var(--color-danger);
}

.dropdown-divider {
  height: 1px;
  margin: var(--space-2) 0;
  background-color: var(--border-color);
}

.dropdown-label {
  display: block;
  padding: var(--space-2) var(--space-3);
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  pointer-events: none;
}

/* RTL */
[dir="rtl"] .dropdown-menu {
  left: auto;
  right: 0;
}

[dir="rtl"] .dropdown-item {
  text-align: right;
}


/* ───────────────────────────────────────────────────────────────
   13. Alerts
   ─────────────────────────────────────────────────────────────── */

.alert {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  padding: var(--space-4) var(--space-5);
  font-size: var(--text-sm);
  line-height: var(--leading-relaxed);
  color: var(--text-primary);
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-4);
}

.alert-icon {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  margin-top: 1px;
}

.alert-body {
  flex: 1;
  min-width: 0;
}

.alert-title {
  font-weight: 600;
  margin-bottom: var(--space-1);
}

.alert-message {
  margin: 0;
}

.alert-close {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 1.5rem;
  height: 1.5rem;
  padding: 0;
  background: none;
  border: none;
  border-radius: var(--radius-sm);
  color: var(--text-muted);
  cursor: pointer;
  transition: background-color var(--transition-fast),
              color var(--transition-fast);
}

.alert-close:hover {
  background-color: var(--bg-tertiary);
  color: var(--text-primary);
}

/* Alert variants */
.alert-info {
  background-color: rgba(6, 182, 212, 0.06);
  border-color: rgba(6, 182, 212, 0.25);
  color: #0E7490;
}

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

.alert-warning {
  background-color: rgba(245, 158, 11, 0.06);
  border-color: rgba(245, 158, 11, 0.25);
  color: #92400E;
}

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

.alert-success {
  background-color: rgba(16, 185, 129, 0.06);
  border-color: rgba(16, 185, 129, 0.25);
  color: #065F46;
}

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

.alert-danger {
  background-color: rgba(239, 68, 68, 0.06);
  border-color: rgba(239, 68, 68, 0.25);
  color: #991B1B;
}

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

/* RTL */
[dir="rtl"] .alert {
  flex-direction: row-reverse;
}


/* ───────────────────────────────────────────────────────────────
   Utility: Focus Visible Ring
   ─────────────────────────────────────────────────────────────── */

:focus-visible {
  outline: 2px solid var(--border-focus);
  outline-offset: 2px;
}

.btn:focus-visible,
.form-input:focus-visible,
.form-textarea:focus-visible,
.form-select:focus-visible {
  outline: none;
}


/* ───────────────────────────────────────────────────────────────
   Utility: Visually Hidden (screen-reader only)
   ─────────────────────────────────────────────────────────────── */

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}


/* ───────────────────────────────────────────────────────────────
   Utility: Scrollbar Styling
   ─────────────────────────────────────────────────────────────── */

.custom-scrollbar::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}

.custom-scrollbar::-webkit-scrollbar-track {
  background: transparent;
}

.custom-scrollbar::-webkit-scrollbar-thumb {
  background-color: var(--border-color);
  border-radius: var(--radius-full);
}

.custom-scrollbar::-webkit-scrollbar-thumb:hover {
  background-color: var(--text-muted);
}