/* ========================================
   OKUN ACADEMIA - Components
   ======================================== */

/* ---- Buttons ---- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 24px;
  border: none;
  border-radius: var(--radius-pill);
  font-family: var(--font);
  font-size: var(--text-sm);
  font-weight: 500;
  cursor: pointer;
  transition: all var(--ease-fast);
  text-decoration: none;
  white-space: nowrap;
  line-height: 1.4;
}

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

.btn svg {
  width: 16px;
  height: 16px;
  fill: currentColor;
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent-gold), var(--accent-gold-dark));
  color: #fff;
}

.btn-primary:hover:not(:disabled) {
  box-shadow: 0 4px 15px rgba(255, 188, 80, 0.4);
  transform: translateY(-1px);
}

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

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

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

.btn-danger:hover:not(:disabled) {
  background: #dc2626;
}

.btn-ghost {
  background: none;
  color: var(--text-secondary);
  padding: 8px 16px;
}

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

.btn-sm {
  padding: 6px 16px;
  font-size: var(--text-xs);
}

.btn-lg {
  padding: 14px 32px;
  font-size: var(--text-base);
}

.btn-icon {
  width: 36px;
  height: 36px;
  padding: 0;
  border-radius: var(--radius-sm);
  background: none;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--ease-fast);
}

.btn-icon:hover {
  background: var(--border-light);
  color: var(--text-primary);
}

.btn-icon svg {
  width: 18px;
  height: 18px;
  fill: currentColor;
}

/* ---- Cards ---- */
.card {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-light);
  transition: all var(--ease-normal);
}

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

.card-header {
  padding: 20px 24px;
  border-bottom: 1px solid var(--border-light);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.card-header h3 {
  font-size: var(--text-base);
  font-weight: 600;
  color: var(--text-primary);
}

.card-body {
  padding: 24px;
}

.card-footer {
  padding: 16px 24px;
  border-top: 1px solid var(--border-light);
}

/* ---- Stats Card ---- */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}

.stat-card {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  padding: 20px;
  border: 1px solid var(--border-light);
  display: flex;
  align-items: flex-start;
  gap: 16px;
  transition: all var(--ease-normal);
}

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

.stat-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.stat-icon svg {
  width: 22px;
  height: 22px;
  fill: currentColor;
}

.stat-icon.gold { background: rgba(255,188,80,0.15); color: var(--accent-gold-dark); }
.stat-icon.blue { background: rgba(59,130,246,0.15); color: var(--info); }
.stat-icon.green { background: rgba(34,197,94,0.15); color: var(--success); }
.stat-icon.red { background: rgba(239,68,68,0.15); color: var(--danger); }
.stat-icon.orange { background: rgba(241,123,83,0.15); color: var(--accent-cta); }

.stat-info h4 {
  font-size: var(--text-2xl);
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.2;
}

.stat-info p {
  font-size: var(--text-sm);
  color: var(--text-muted);
  font-weight: 400;
}

/* ---- Forms ---- */
.form-group {
  margin-bottom: 20px;
}

.form-label {
  display: block;
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--text-primary);
  margin-bottom: 6px;
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: 10px 14px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  font-family: var(--font);
  font-size: var(--text-sm);
  color: var(--text-primary);
  background: var(--bg-input);
  transition: border var(--ease-fast), box-shadow var(--ease-fast);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--accent-gold);
  box-shadow: 0 0 0 3px rgba(255,188,80,0.15);
}

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

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

.form-hint {
  font-size: var(--text-xs);
  color: var(--text-muted);
  margin-top: 4px;
}

.form-error {
  font-size: var(--text-xs);
  color: var(--danger);
  margin-top: 4px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

@media (max-width: 600px) {
  .form-row {
    grid-template-columns: 1fr;
  }
}

/* ---- Tables ---- */
.table-wrapper {
  overflow-x: auto;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-light);
}

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

.data-table th {
  background: var(--bg-primary);
  padding: 12px 16px;
  text-align: left;
  font-weight: 600;
  color: var(--text-secondary);
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  border-bottom: 1px solid var(--border-color);
}

.data-table td {
  padding: 12px 16px;
  border-bottom: 1px solid var(--border-light);
  color: var(--text-primary);
}

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

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

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

/* ---- Badges ---- */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 3px 10px;
  border-radius: var(--radius-pill);
  font-size: var(--text-xs);
  font-weight: 500;
}

.badge-success { background: var(--success-bg); color: var(--success); }
.badge-warning { background: var(--warning-bg); color: var(--warning); }
.badge-danger { background: var(--danger-bg); color: var(--danger); }
.badge-info { background: var(--info-bg); color: var(--info); }
.badge-neutral { background: var(--border-light); color: var(--text-secondary); }

/* ---- Modal ---- */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: var(--bg-modal-overlay);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 500;
  padding: 20px;
  animation: fadeIn 0.2s ease;
}

.modal {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  width: 100%;
  max-width: 520px;
  max-height: 90vh;
  overflow-y: auto;
  animation: slideUp 0.25s ease;
}

.modal-header {
  padding: 20px 24px;
  border-bottom: 1px solid var(--border-light);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.modal-header h3 {
  font-size: var(--text-lg);
  font-weight: 600;
}

.modal-body {
  padding: 24px;
}

.modal-footer {
  padding: 16px 24px;
  border-top: 1px solid var(--border-light);
  display: flex;
  justify-content: flex-end;
  gap: 8px;
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

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

/* ---- Toasts ---- */
.toast-container {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 600;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.toast {
  padding: 12px 20px;
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  font-weight: 500;
  color: #fff;
  box-shadow: var(--shadow-lg);
  animation: slideIn 0.3s ease, fadeOut 0.3s ease 3.5s forwards;
  display: flex;
  align-items: center;
  gap: 10px;
  max-width: 380px;
}

.toast svg {
  width: 18px;
  height: 18px;
  fill: currentColor;
  flex-shrink: 0;
}

.toast-success { background: #16a34a; }
.toast-error { background: #dc2626; }
.toast-info { background: #2563eb; }
.toast-warning { background: #d97706; }

@keyframes slideIn {
  from { opacity: 0; transform: translateX(60px); }
  to { opacity: 1; transform: translateX(0); }
}

@keyframes fadeOut {
  from { opacity: 1; }
  to { opacity: 0; }
}

/* ---- Notification Bell ---- */
.notification-btn {
  position: relative;
}

.notification-count {
  position: absolute;
  top: 2px;
  right: 2px;
  width: 16px;
  height: 16px;
  border-radius: var(--radius-full);
  background: var(--danger);
  color: #fff;
  font-size: 10px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* ---- Notifications Panel ---- */
.notifications-panel {
  position: absolute;
  top: calc(var(--topbar-height) - 4px);
  right: 16px;
  width: 360px;
  max-height: 420px;
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--border-color);
  z-index: 300;
  overflow: hidden;
  animation: slideUp 0.2s ease;
}

.notifications-header {
  padding: 14px 16px;
  border-bottom: 1px solid var(--border-light);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.notifications-header h4 {
  font-size: var(--text-sm);
  font-weight: 600;
}

.notifications-list {
  overflow-y: auto;
  max-height: 340px;
}

.notification-item {
  padding: 12px 16px;
  border-bottom: 1px solid var(--border-light);
  cursor: pointer;
  transition: background var(--ease-fast);
}

.notification-item:hover {
  background: var(--bg-primary);
}

.notification-item.unread {
  background: var(--info-bg);
}

.notification-item .notif-title {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--text-primary);
  margin-bottom: 2px;
}

.notification-item .notif-msg {
  font-size: var(--text-xs);
  color: var(--text-muted);
}

.notification-item .notif-time {
  font-size: 11px;
  color: var(--text-muted);
  margin-top: 4px;
}

/* ---- Avatar ---- */
.avatar {
  border-radius: var(--radius-full);
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  color: #fff;
  flex-shrink: 0;
}

.avatar-sm { width: 32px; height: 32px; font-size: 12px; }
.avatar-md { width: 40px; height: 40px; font-size: 14px; }
.avatar-lg { width: 64px; height: 64px; font-size: 22px; }
.avatar-xl { width: 96px; height: 96px; font-size: 32px; }

.avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ---- User Dropdown ---- */
.user-dropdown {
  position: relative;
}

.user-dropdown-trigger {
  display: flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  padding: 4px 8px;
  border-radius: var(--radius-sm);
  transition: background var(--ease-fast);
}

.user-dropdown-trigger:hover {
  background: var(--border-light);
}

.user-dropdown-trigger .user-name {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--text-primary);
}

.user-dropdown-menu {
  position: absolute;
  top: 100%;
  right: 0;
  margin-top: 4px;
  min-width: 180px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  z-index: 300;
  padding: 4px;
  animation: slideUp 0.15s ease;
}

.user-dropdown-menu .dropdown-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  font-size: var(--text-sm);
  color: var(--text-primary);
  cursor: pointer;
  border-radius: var(--radius-sm);
  transition: background var(--ease-fast);
}

.user-dropdown-menu .dropdown-item:hover {
  background: var(--bg-primary);
}

.user-dropdown-menu .dropdown-item svg {
  width: 16px;
  height: 16px;
  fill: currentColor;
  color: var(--text-muted);
}

.user-dropdown-menu .dropdown-divider {
  height: 1px;
  background: var(--border-light);
  margin: 4px 0;
}

/* ---- Theme Toggle ---- */
.theme-toggle {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  border: none;
  background: none;
  cursor: pointer;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--ease-fast);
}

.theme-toggle:hover {
  background: var(--border-light);
  color: var(--accent-gold);
}

.theme-toggle svg {
  width: 18px;
  height: 18px;
  fill: currentColor;
}

/* ---- Tabs ---- */
.tabs {
  display: flex;
  gap: 0;
  border-bottom: 2px solid var(--border-light);
  margin-bottom: 24px;
}

.tab-item {
  padding: 10px 20px;
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--text-muted);
  cursor: pointer;
  border-bottom: 2px solid transparent;
  margin-bottom: -2px;
  transition: all var(--ease-fast);
}

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

.tab-item.active {
  color: var(--accent-gold-dark);
  border-bottom-color: var(--accent-gold);
}

/* ---- Progress Bar ---- */
.progress-bar {
  height: 8px;
  background: var(--border-light);
  border-radius: 4px;
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--accent-gold), var(--accent-gold-dark));
  border-radius: 4px;
  transition: width var(--ease-smooth);
}

/* ---- Empty State ---- */
.empty-state {
  text-align: center;
  padding: 60px 20px;
}

.empty-state svg {
  width: 64px;
  height: 64px;
  fill: var(--text-muted);
  margin-bottom: 16px;
  opacity: 0.4;
}

.empty-state h3 {
  font-size: var(--text-lg);
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 8px;
}

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

/* ---- Page Header ---- */
.page-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
  flex-wrap: wrap;
  gap: 12px;
}

.page-header h1 {
  font-size: var(--text-2xl);
  font-weight: 600;
  color: var(--text-primary);
}

.page-header h2 {
  font-size: var(--text-xl);
  font-weight: 600;
  color: var(--text-primary);
}

/* ---- Grid Layouts ---- */
.grid-2 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 20px;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
}

/* ---- Course Card ---- */
.course-card {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-light);
  overflow: hidden;
  transition: all var(--ease-normal);
  cursor: pointer;
}

.course-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-3px);
}

.course-card-accent {
  height: 4px;
  background: linear-gradient(90deg, var(--accent-gold), var(--accent-gold-dark));
}

.course-card-body {
  padding: 20px;
}

.course-card-body h3 {
  font-size: var(--text-base);
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.course-card-body p {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  line-height: 1.5;
  margin-bottom: 16px;
}

.course-card-meta {
  display: flex;
  align-items: center;
  gap: 16px;
  font-size: var(--text-xs);
  color: var(--text-muted);
}

.course-card-meta span {
  display: flex;
  align-items: center;
  gap: 4px;
}

.course-card-meta svg {
  width: 14px;
  height: 14px;
  fill: currentColor;
}

/* ---- Scrollbar ---- */
::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}

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

::-webkit-scrollbar-thumb {
  background: var(--border-color);
  border-radius: 3px;
}

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

/* ---- Selection ---- */
::selection {
  background: rgba(255, 188, 80, 0.3);
}

/* ---- Activity List ---- */
.activity-list {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.activity-item {
  display: flex;
  gap: 12px;
  padding: 12px 0;
  border-bottom: 1px solid var(--border-light);
}

.activity-item:last-child {
  border-bottom: none;
}

.activity-dot {
  width: 8px;
  height: 8px;
  border-radius: var(--radius-full);
  background: var(--accent-gold);
  margin-top: 6px;
  flex-shrink: 0;
}

.activity-text {
  font-size: var(--text-sm);
  color: var(--text-primary);
}

.activity-time {
  font-size: var(--text-xs);
  color: var(--text-muted);
  margin-top: 2px;
}

/* ---- Search ---- */
.search-input {
  position: relative;
}

.search-input input {
  padding-left: 36px;
}

.search-input svg {
  position: absolute;
  left: 12px;
  top: 50%;
  transform: translateY(-50%);
  width: 16px;
  height: 16px;
  fill: var(--text-muted);
}