/* ──── Buttons ──── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: 0.7rem 1.6rem;
  border: 2px solid transparent;
  border-radius: var(--radius-full);
  font-family: var(--font-family);
  font-weight: var(--font-weight-semibold);
  font-size: var(--font-size-sm);
  letter-spacing: 0.01em;
  cursor: pointer;
  transition: all var(--transition-fast);
  text-decoration: none;
  white-space: nowrap;
  line-height: 1;
}

.btn:hover {
  transform: translateY(-1px);
  text-decoration: none;
}

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

.btn:disabled {
  opacity: 0.55;
  cursor: not-allowed;
  transform: none;
}

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

.btn-primary:hover {
  background: var(--color-primary-dark);
  border-color: var(--color-primary-dark);
  color: #fff;
  box-shadow: 0 4px 16px rgba(122, 156, 189, 0.35);
}

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

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

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

.btn-danger:hover {
  opacity: 0.88;
  color: #fff;
  box-shadow: 0 4px 16px rgba(240, 62, 62, 0.3);
}

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

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

.btn-outline:hover {
  background: var(--color-primary);
  color: #fff;
  box-shadow: 0 4px 16px rgba(122, 156, 189, 0.3);
}

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

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

.btn-lg {
  padding: 0.9rem 2.2rem;
  font-size: var(--font-size-md);
  min-height: 3rem;
}

.btn-sm {
  padding: 0.45rem 1.1rem;
  font-size: var(--font-size-xs);
  min-height: 2rem;
}

/* Base buttons (non-sm, non-lg) get consistent min-height */
.btn {
  min-height: 2.5rem;
}

.btn-icon {
  padding: 0.6rem;
  border-radius: var(--radius-md);
  width: 38px;
  height: 38px;
}

.btn-block {
  width: 100%;
}

/* ──── Cards ──── */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: box-shadow var(--transition-normal), transform var(--transition-normal), border-color var(--transition-normal);
}

.card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-3px);
  border-color: var(--color-primary-lighter);
}

.card-img {
  width: 100%;
  height: 210px;
  object-fit: cover;
  background: var(--bg-tertiary);
}

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

.card-title {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--space-sm);
  color: var(--text-primary);
  font-family: var(--font-family);
  line-height: 1.35;
}

.card-text {
  color: var(--text-secondary);
  font-size: var(--font-size-sm);
  line-height: 1.6;
  margin-bottom: var(--space-md);
}

.card-footer {
  padding: var(--space-md) var(--space-lg);
  border-top: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--bg-secondary);
}

/* ──── Forms ──── */
.form-group {
  margin-bottom: var(--space-lg);
}

.form-label {
  display: block;
  font-weight: var(--font-weight-semibold);
  font-size: var(--font-size-sm);
  margin-bottom: 0.4rem;
  color: var(--text-primary);
  letter-spacing: 0.01em;
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: 0.75rem 1rem;
  background: var(--bg-input);
  border: 1.5px solid var(--border-color);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-size: var(--font-size-md);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  line-height: 1.5;
  -webkit-appearance: none;
  appearance: none;
}

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

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(122, 156, 189, 0.18);
}

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

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-md);
}

.form-hint {
  font-size: var(--font-size-xs);
  color: var(--text-muted);
  margin-top: 0.3rem;
  line-height: 1.5;
}

.form-error {
  font-size: var(--font-size-xs);
  color: var(--color-danger);
  margin-top: 0.3rem;
}

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

.form-check input[type="checkbox"] {
  width: 18px;
  height: 18px;
  accent-color: var(--color-primary);
  margin-top: 1px;
  flex-shrink: 0;
  cursor: pointer;
  background-color: var(--bg-input);
  border: 1.5px solid var(--border-color);
  border-radius: 4px;
  appearance: none;
  -webkit-appearance: none;
}

.form-check input[type="checkbox"]:checked {
  background-color: var(--color-primary);
  border-color: var(--color-primary);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='white' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='20 6 9 17 4 12'%3E%3C/polyline%3E%3C/svg%3E");
  background-size: 12px;
  background-position: center;
  background-repeat: no-repeat;
}

/* ──── Badges ──── */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 0.25rem 0.7rem;
  font-size: 0.72rem;
  font-weight: var(--font-weight-semibold);
  border-radius: var(--radius-full);
  letter-spacing: 0.03em;
  text-transform: uppercase;
}

.badge-primary {
  background: var(--color-primary-100);
  color: var(--color-primary-darker);
}

.badge-success {
  background: #d3f9d8;
  color: #2b8a3e;
}

.badge-warning {
  background: #fff3bf;
  color: #b36a00;
}

.badge-danger {
  background: #ffe3e3;
  color: #c92a2a;
}

[data-theme="dark"] .badge-success { background: #0b3d1a; color: #69db7c; }
[data-theme="dark"] .badge-warning { background: #3d2e00; color: #ffd43b; }
[data-theme="dark"] .badge-danger  { background: #3d0a0a; color: #ff8787; }
[data-theme="dark"] .badge-primary { background: var(--color-primary-900); color: var(--color-primary-lighter); }

/* ──── Alerts ──── */
.alert {
  padding: var(--space-md) var(--space-lg);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-lg);
  font-size: var(--font-size-sm);
  display: flex;
  align-items: flex-start;
  gap: var(--space-sm);
  line-height: 1.5;
  border: 1px solid transparent;
}

.alert-success { background: #ebfbee; color: #2b8a3e; border-color: #b2f2bb; }
.alert-danger  { background: #fff5f5; color: #c92a2a; border-color: #ffc9c9; }
.alert-warning { background: #fffbeb; color: #b36a00; border-color: #ffe066; }
.alert-info    { background: var(--color-primary-50); color: var(--color-primary-darker); border-color: var(--color-primary-200); }

[data-theme="dark"] .alert-success { background: #0b3d1a; color: #8ce99a; border-color: #1a5c2a; }
[data-theme="dark"] .alert-danger  { background: #3d0a0a; color: #ff8787; border-color: #5c1a1a; }
[data-theme="dark"] .alert-warning { background: #3d2e00; color: #ffd43b; border-color: #5c4500; }
[data-theme="dark"] .alert-info    { background: var(--color-primary-900); color: var(--color-primary-lighter); border-color: rgba(122,156,189,0.25); }

/* ──── Progress Bar ──── */
.progress-bar {
  width: 100%;
  height: 6px;
  background: var(--color-gray-200);
  border-radius: var(--radius-full);
  overflow: hidden;
}

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

/* ──── Modal ──── */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: var(--bg-overlay);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  padding: var(--space-lg);
  backdrop-filter: blur(4px);
}

.modal-overlay.active {
  display: flex;
}

.modal {
  background: var(--bg-card);
  border-radius: var(--radius-xl);
  max-width: 600px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: var(--shadow-xl);
}

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

.modal-header h3 {
  font-size: var(--font-size-xl);
  font-family: var(--font-heading);
}

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

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

/* ──── Table ──── */
.table-wrapper {
  overflow-x: auto;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-xs);
}

.table {
  width: 100%;
  border-collapse: collapse;
}

.table th,
.table td {
  padding: var(--space-md) var(--space-lg);
  text-align: left;
  border-bottom: 1px solid var(--border-color);
  font-size: var(--font-size-sm);
}

.table th {
  background: var(--bg-secondary);
  font-weight: var(--font-weight-semibold);
  font-family: var(--font-family);
  color: var(--text-primary);
  white-space: nowrap;
  letter-spacing: 0.02em;
  font-size: var(--font-size-xs);
  text-transform: uppercase;
}

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

.table tr:hover td {
  background: var(--bg-secondary);
}

/* ──── Avatar ──── */
.avatar {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  object-fit: cover;
  background: var(--color-primary-100);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary-darker);
  font-weight: var(--font-weight-bold);
  font-size: var(--font-size-sm);
  font-family: var(--font-family);
  flex-shrink: 0;
}

.avatar-lg {
  width: 64px;
  height: 64px;
  font-size: var(--font-size-xl);
}

.avatar-xl {
  width: 100px;
  height: 100px;
  font-size: var(--font-size-3xl);
}

[data-theme="dark"] .avatar {
  background: var(--color-primary-900);
  color: var(--color-primary-lighter);
}

/* ──── Utility ──── */
.text-center  { text-align: center; }
.text-right   { text-align: right; }
.text-muted   { color: var(--text-muted); }
.text-sm      { font-size: var(--font-size-sm); }
.text-xs      { font-size: var(--font-size-xs); }
.text-danger  { color: var(--color-danger); }
.text-success { color: var(--color-success); }
.text-primary-color { color: var(--color-primary); }
.fw-semibold  { font-weight: var(--font-weight-semibold); }
.fw-bold      { font-weight: var(--font-weight-bold); }
.mt-sm  { margin-top: var(--space-sm); }
.mt-md  { margin-top: var(--space-md); }
.mt-lg  { margin-top: var(--space-lg); }
.mt-xl  { margin-top: var(--space-xl); }
.mb-sm  { margin-bottom: var(--space-sm); }
.mb-md  { margin-bottom: var(--space-md); }
.mb-lg  { margin-bottom: var(--space-lg); }
.mb-xl  { margin-bottom: var(--space-xl); }
.flex          { display: flex; }
.flex-col      { flex-direction: column; }
.items-center  { align-items: center; }
.justify-between { justify-content: space-between; }
.justify-center  { justify-content: center; }
.gap-sm { gap: var(--space-sm); }
.gap-md { gap: var(--space-md); }
.gap-lg { gap: var(--space-lg); }
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: var(--space-lg); }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-lg); }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-lg); }
.hidden { display: none !important; }

/* ──── Cookie Banner ──── */
.cookie-banner {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: var(--bg-card);
  border-top: 1px solid var(--border-color);
  box-shadow: 0 -4px 24px rgba(0,0,0,0.08);
  z-index: 999;
  padding: var(--space-md) var(--space-lg);
  display: none;
}

.cookie-banner.visible {
  display: flex;
  align-items: center;
  justify-content: center;
}

[data-theme="dark"] .cookie-banner {
  box-shadow: 0 -4px 24px rgba(0,0,0,0.4);
}

.cookie-banner-inner {
  max-width: var(--container-max);
  width: 100%;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-lg);
  flex-wrap: wrap;
}

.cookie-banner p {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  margin: 0;
}

.cookie-banner .cookie-accept-btn {
  padding: 0.4rem 1rem;
  font-size: var(--font-size-xs);
  min-height: 1.75rem;
  flex-shrink: 0;
}

/* ──── Responsive breakpoints ──── */
@media (max-width: 640px) {
  .form-row,
  .grid-2,
  .grid-3,
  .grid-4 {
    grid-template-columns: 1fr;
  }
}

@media (min-width: 641px) and (max-width: 1024px) {
  .grid-3,
  .grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* ──── Search Button (matches theme-toggle / notification) ──── */
.search-btn {
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--space-sm);
  color: var(--text-muted);
  width: 38px;
  height: 38px;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  transition: all var(--transition-fast);
}

.search-btn:hover {
  color: var(--color-primary);
  background: var(--color-primary-50);
}

[data-theme="dark"] .search-btn:hover {
  background: var(--color-primary-900);
}

/* ──── Purchase Dialog (hidden until payment flow triggered) ──── */
.purchase-overlay {
  position: fixed;
  inset: 0;
  display: none;
  background: var(--bg-overlay, rgba(0, 0, 0, 0.55));
  align-items: center;
  justify-content: center;
  z-index: 9999;
  padding: var(--space-lg);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  transition: opacity var(--transition-normal), visibility var(--transition-normal);
}

.purchase-overlay.visible {
  display: flex !important;
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}

.purchase-dialog {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: var(--space-2xl);
  max-width: 640px;
  width: 90%;
  position: relative;
  box-shadow: var(--shadow-xl);
}

.purchase-dialog-close {
  position: absolute;
  top: var(--space-md);
  right: var(--space-md);
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: var(--space-xs);
  font-size: 1.2rem;
  line-height: 1;
}

.purchase-dialog-close:hover {
  color: var(--text-primary);
}

.purchase-dialog-icon {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-full);
  background: var(--color-primary-50);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: var(--space-lg);
}

.purchase-dialog-title {
  font-size: var(--font-size-xl);
  margin: 0 0 var(--space-sm);
  font-family: var(--font-family);
}

.purchase-dialog-desc {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  margin: 0 0 var(--space-md);
  line-height: 1.5;
}

.purchase-dialog-meta {
  font-size: var(--font-size-xs);
  color: var(--text-muted);
  margin-bottom: var(--space-md);
}

.purchase-dialog-meta span + span::before {
  content: ' • ';
}

.purchase-dialog-price {
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-primary);
  margin-bottom: var(--space-lg);
}

.purchase-dialog-note {
  margin-bottom: var(--space-xl);
  font-size: var(--font-size-sm);
}

.purchase-dialog-actions {
  display: flex;
  gap: var(--space-md);
  justify-content: flex-end;
}

/* ──── Confirm Dialog (Delete Account, Remove Student, etc.) ──── */
.confirm-overlay {
  position: fixed;
  inset: 0;
  background: var(--bg-overlay, rgba(0, 0, 0, 0.55));
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9999;
  padding: var(--space-lg);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity var(--transition-fast), visibility var(--transition-fast);
}

.confirm-overlay.visible {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}

.confirm-overlay[hidden] {
  display: none !important;
}

.confirm-dialog {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: var(--space-2xl);
  max-width: 440px;
  width: 90%;
  text-align: center;
  box-shadow: var(--shadow-xl);
}

.confirm-dialog-icon {
  font-size: 2.5rem;
  color: var(--color-danger, #dc3545);
  margin-bottom: var(--space-md);
}

.confirm-dialog h3 {
  font-size: var(--font-size-xl);
  margin-bottom: var(--space-sm);
  color: var(--text-primary);
}

.confirm-dialog p {
  color: var(--text-secondary);
  font-size: var(--font-size-sm);
  margin-bottom: var(--space-xl);
}

.confirm-dialog-actions {
  display: flex;
  flex-direction: row;
  gap: var(--space-md);
  justify-content: center;
  flex-wrap: wrap;
}

/* ──── Search Overlay Dialog ──── */
.search-overlay {
  position: fixed;
  inset: 0;
  background: var(--bg-overlay, rgba(0, 0, 0, 0.55));
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  display: flex;
  align-items: flex-start;
  justify-content: center;
  z-index: 1000;
  padding: var(--space-2xl) var(--space-lg);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity var(--transition-fast), visibility var(--transition-fast);
}

.search-overlay.visible {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}

.search-overlay[hidden] {
  display: none;
}

.search-dialog {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  max-width: 520px;
  width: 100%;
  margin-top: 10vh;
  box-shadow: var(--shadow-xl);
  max-height: 70vh;
  display: flex;
  flex-direction: column;
}

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

.search-dialog-header h3 {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  margin: 0;
  color: var(--text-primary);
}

.search-dialog-close {
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: var(--space-xs);
  font-size: 1.2rem;
  line-height: 1;
  border-radius: var(--radius-md);
  transition: color var(--transition-fast);
}

.search-dialog-close:hover {
  color: var(--text-primary);
}

.search-dialog-body {
  padding: var(--space-lg);
  overflow-y: auto;
  flex: 1;
  min-height: 0;
}

.search-input-wrap {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-md);
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-lg);
}

.search-input-wrap i {
  color: var(--text-muted);
}

.search-input-wrap .form-input {
  flex: 1;
  border: none;
  background: none;
  padding: 0;
}

.search-results-wrap {
  min-height: 120px;
}

.search-empty {
  margin: 0;
  padding: var(--space-xl) 0;
  text-align: center;
  color: var(--text-muted);
}

.search-empty.hidden {
  display: none;
}

.search-results {
  list-style: none;
  margin: 0;
  padding: 0;
}

.search-result-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
  padding: var(--space-md);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-sm);
  border: 1px solid var(--border-color);
  background: var(--bg-secondary);
}

.search-result-link {
  flex: 1;
  min-width: 0;
  text-decoration: none;
  color: inherit;
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.search-result-link:hover {
  color: var(--color-primary);
}

.search-result-title {
  font-weight: var(--font-weight-semibold);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.search-result-meta {
  font-size: var(--font-size-sm);
  color: var(--text-muted);
}

.search-loading,
.search-message {
  padding: var(--space-xl);
  text-align: center;
  color: var(--text-muted);
}

.search-message a {
  color: var(--color-primary);
}

/* ──── Notification Bell ──── */
.notification-wrap {
  position: relative;
  flex-shrink: 0;
}

/* Same styling as .theme-toggle for visual consistency */
.notification-btn {
  position: relative;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--space-sm);
  color: var(--text-muted);
  width: 38px;
  height: 38px;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  transition: all var(--transition-fast);
}

.notification-btn:hover {
  color: var(--color-primary);
  background: var(--color-primary-50);
}

[data-theme="dark"] .notification-btn:hover {
  background: var(--color-primary-900);
}

.notification-badge {
  position: absolute;
  top: 4px;
  right: 4px;
  min-width: 16px;
  height: 16px;
  background: #e03131;
  color: #fff;
  border-radius: var(--radius-full);
  font-size: 0.6rem;
  font-weight: var(--font-weight-bold);
  display: none;
  align-items: center;
  justify-content: center;
  padding: 0 3px;
  line-height: 1;
  border: 2px solid var(--bg-primary);
  pointer-events: none;
}

.notification-badge.visible {
  display: flex;
}

/* ──── Notification Dropdown ──── */
.notification-dropdown {
  position: fixed;
  /* top/right set by JS */
  width: 340px;
  background: rgba(255, 255, 255, 0.88);
  -webkit-backdrop-filter: blur(16px);
  backdrop-filter: blur(16px);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
  z-index: 10002;
  transform: translateZ(0);
  overflow: hidden;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.18s ease;
}

[data-theme="dark"] .notification-dropdown {
  background: rgba(23, 32, 48, 0.88);
}

.notification-dropdown.active {
  opacity: 1;
  pointer-events: all;
}

.notif-dropdown-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-md) var(--space-lg);
  border-bottom: 1px solid var(--border-color);
  font-size: var(--font-size-sm);
}

.notif-mark-all-btn {
  background: none;
  border: none;
  cursor: pointer;
  color: var(--color-primary);
  font-size: var(--font-size-xs);
  font-family: var(--font-family);
  font-weight: var(--font-weight-medium);
  padding: 0;
  transition: color var(--transition-fast);
}

.notif-mark-all-btn:hover {
  color: var(--color-primary-dark);
}

.notif-list {
  max-height: 380px;
  overflow-y: auto;
  scroll-behavior: smooth;
}

.notif-list::-webkit-scrollbar {
  width: 4px;
}
.notif-list::-webkit-scrollbar-track {
  background: transparent;
}
.notif-list::-webkit-scrollbar-thumb {
  background: var(--border-color);
  border-radius: 2px;
}

.notif-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-sm);
  padding: var(--space-md) var(--space-lg);
  margin: 0 var(--space-sm) var(--space-xs);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: background var(--transition-fast);
  position: relative;
}

.notif-item:first-child {
  margin-top: var(--space-xs);
}

.notif-item:last-child {
  margin-bottom: var(--space-sm);
}

.notif-item:hover {
  background: rgba(0, 0, 0, 0.06);
}

[data-theme="dark"] .notif-item:hover {
  background: rgba(255, 255, 255, 0.08);
}

.notif-item.unread {
  background: var(--color-primary-50);
}

[data-theme="dark"] .notif-item.unread {
  background: rgba(122, 156, 189, 0.08);
}

.notif-icon-wrap {
  width: 34px;
  height: 34px;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  flex-shrink: 0;
  margin-top: 1px;
}

.notif-icon-lesson  { background: #d0ebff; color: #1971c2; }
.notif-icon-comment { background: #d3f9d8; color: #2b8a3e; }
.notif-icon-reply   { background: #fff3bf; color: #b36a00; }
.notif-icon-like    { background: #ffe3e3; color: #c92a2a; }
.notif-icon-default { background: var(--bg-tertiary); color: var(--text-muted); }

[data-theme="dark"] .notif-icon-lesson  { background: #0a2d4a; }
[data-theme="dark"] .notif-icon-comment { background: #0b3d1a; }
[data-theme="dark"] .notif-icon-reply   { background: #3d2e00; }
[data-theme="dark"] .notif-icon-like    { background: #3d0a0a; }

.notif-content {
  flex: 1;
  min-width: 0;
}

.notif-message {
  font-size: var(--font-size-xs);
  color: var(--text-primary);
  line-height: 1.5;
  margin: 0 0 2px;
  word-break: break-word;
}

.notif-time {
  font-size: 0.68rem;
  color: var(--text-muted);
}

.notif-dot {
  width: 8px;
  height: 8px;
  border-radius: var(--radius-full);
  background: var(--color-primary);
  flex-shrink: 0;
  margin-top: 5px;
}

.notif-empty,
.notif-loading {
  padding: var(--space-xl);
  text-align: center;
  font-size: var(--font-size-sm);
  color: var(--text-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
}

@media (max-width: 400px) {
  .notification-dropdown {
    width: calc(100vw - 2rem);
    right: -1rem;
  }
}