/* ========================
   Components Stylesheet
   ======================== */

/* Course Detail View */
.course-detail-header {
    margin-bottom: var(--spacing-2xl);
}

.course-detail-header h2 {
    margin: 0;
}

.course-info {
    background: white;
    padding: var(--spacing-lg);
    border-radius: 10px;
    box-shadow: var(--shadow-md);
    margin-bottom: var(--spacing-2xl);
}

.course-info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-lg);
}

.info-item h4 {
    color: var(--primary);
    margin: 0 0 var(--spacing-sm) 0;
    font-size: var(--font-size-base);
}

.info-item p {
    margin: 0;
    color: var(--gray);
}

.lessons-container {
    background: white;
    padding: var(--spacing-lg);
    border-radius: 10px;
    box-shadow: var(--shadow-md);
}

.lessons-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-lg);
}

.lessons-list {
    display: grid;
    gap: var(--spacing-md);
}

.lesson-item {
    display: grid;
    grid-template-columns: 1fr auto;
    align-items: center;
    padding: var(--spacing-lg);
    border: 1px solid var(--border);
    border-radius: 8px;
    cursor: pointer;
    transition: var(--transition);
}

.lesson-item:hover {
    background-color: var(--light);
    border-color: var(--primary);
    box-shadow: var(--shadow-md);
}

.lesson-info h3 {
    margin: 0 0 var(--spacing-sm) 0;
    font-size: var(--font-size-lg);
    color: var(--dark);
}

.lesson-info p {
    margin: 0;
    color: var(--gray);
    font-size: var(--font-size-sm);
}

.lesson-meta {
    display: flex;
    gap: var(--spacing-md);
    margin-top: var(--spacing-sm);
    font-size: var(--font-size-sm);
}

.lesson-status {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: 20px;
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
}

.lesson-status.completed {
    background-color: #d1fae5;
    color: #065f46;
}

.lesson-status.pending {
    background-color: #fef3c7;
    color: #92400e;
}

.lesson-actions {
    display: flex;
    gap: var(--spacing-sm);
}

.lesson-actions button {
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: var(--font-size-sm);
}

/* Progress Bar */
.progress-container {
    margin: var(--spacing-lg) 0;
}

.progress-label {
    display: flex;
    justify-content: space-between;
    margin-bottom: var(--spacing-sm);
    font-size: var(--font-size-sm);
}

.progress-bar {
    width: 100%;
    height: 24px;
    background-color: var(--border);
    border-radius: 12px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary), var(--primary-light));
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-bold);
    transition: width 0.3s ease;
}

/* Rating Display */
.rating-display {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.stars {
    display: flex;
    gap: var(--spacing-xs);
}

.star {
    font-size: 1.2rem;
    color: var(--gray);
}

.star.filled {
    color: var(--warning);
}

/* Tabs */
.tabs {
    display: flex;
    border-bottom: 2px solid var(--border);
    margin-bottom: var(--spacing-lg);
}

.tab-button {
    background: none;
    border: none;
    padding: var(--spacing-md) var(--spacing-lg);
    cursor: pointer;
    color: var(--gray);
    font-weight: var(--font-weight-medium);
    border-bottom: 3px solid transparent;
    margin-bottom: -2px;
    transition: var(--transition);
}

.tab-button:hover {
    color: var(--dark);
}

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

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
}

/* Badges and Tags */
.badge {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: 20px;
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
}

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

.badge-secondary {
    background-color: #d1d5db;
    color: var(--dark);
}

.badge-success {
    background-color: #d1fae5;
    color: #065f46;
}

.badge-warning {
    background-color: #fef3c7;
    color: #92400e;
}

.badge-danger {
    background-color: #fee2e2;
    color: #991b1b;
}

/* Toast Notifications */
.toast-container {
    position: fixed;
    bottom: var(--spacing-lg);
    right: var(--spacing-lg);
    z-index: 2000;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.toast {
    background: white;
    padding: var(--spacing-lg);
    border-radius: 8px;
    box-shadow: var(--shadow-lg);
    min-width: 300px;
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    animation: slideIn 0.3s ease;
}

@keyframes slideIn {
    from {
        transform: translateX(400px);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

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

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

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

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

/* Checkbox */
input[type="checkbox"] {
    width: 20px;
    height: 20px;
    cursor: pointer;
    accent-color: var(--primary);
}

/* Loading Spinner */
.spinner {
    border: 4px solid var(--border);
    border-top: 4px solid var(--primary);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.loading-container {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: var(--spacing-2xl);
}

/* Divider */
.divider {
    height: 1px;
    background-color: var(--border);
    margin: var(--spacing-lg) 0;
}

/* Empty State */
.not-found {
    text-align: center;
    padding: var(--spacing-2xl);
    color: var(--gray);
}

.not-found h3 {
    color: var(--dark);
}

/* Tooltip */
.tooltip {
    position: relative;
    display: inline-block;
}

.tooltip .tooltiptext {
    visibility: hidden;
    background-color: var(--dark);
    color: white;
    text-align: center;
    border-radius: 6px;
    padding: var(--spacing-sm) var(--spacing-md);
    position: absolute;
    z-index: 1;
    bottom: 125%;
    left: 50%;
    transform: translateX(-50%);
    white-space: nowrap;
    font-size: var(--font-size-sm);
}

.tooltip .tooltiptext::after {
    content: "";
    position: absolute;
    top: 100%;
    left: 50%;
    margin-left: -5px;
    border-width: 5px;
    border-style: solid;
    border-color: var(--dark) transparent transparent transparent;
}

.tooltip:hover .tooltiptext {
    visibility: visible;
}

/* Alerts */
.alert {
    padding: var(--spacing-lg);
    border-radius: 8px;
    margin-bottom: var(--spacing-lg);
}

.alert-success {
    background-color: #d1fae5;
    border-left: 4px solid var(--success);
    color: #065f46;
}

.alert-error {
    background-color: #fee2e2;
    border-left: 4px solid var(--danger);
    color: #991b1b;
}

.alert-warning {
    background-color: #fef3c7;
    border-left: 4px solid var(--warning);
    color: #92400e;
}

.alert-info {
    background-color: #dbeafe;
    border-left: 4px solid var(--primary);
    color: #0c4a6e;
}

/* ========================
   AI Chat Popup Component
   ======================== */

.floating-btn {
    position: fixed;
    bottom: 20px;
    right: 20px;
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: #436d9d;
    color: white;
    border: none;
    cursor: pointer;
    font-size: 1.5rem;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    transition: transform 0.2s, box-shadow 0.2s;
    z-index: 1999;
    padding: 0;
}

.floating-btn.hidden {
    display: none;
}

.floating-btn:hover {
    transform: scale(1.1);
    box-shadow: 0 6px 16px rgba(0, 0, 0, 0.2);
}

.floating-btn:active {
    transform: scale(0.95);
}

.ai-chat-popup {
    position: fixed;
    bottom: 100px;
    right: 20px;
    width: 500px;
    height: 500px;
    background: #fff;
    border: 2px solid #436d9d;
    border-radius: 8px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
    z-index: 2000;
    display: none;
    flex-direction: column;
    overflow: hidden;
    transition: all 0.3s ease;
}

.ai-chat-popup.active {
    display: flex;
}

.ai-chat-popup.minimized {
    display: flex;
    width: 60px;
    height: 60px;
    border-radius: 50%;
    bottom: 20px;
    padding: 0;
    align-items: center;
    justify-content: center;
    cursor: pointer;
}

.ai-chat-popup.minimized .ai-chat-popup-header,
.ai-chat-popup.minimized .ai-chat-popup-content {
    display: none;
}

.ai-chat-popup.minimized::after {
    content: '💬';
    font-size: 1.5rem;
}

.ai-chat-popup-header {
    background: #436d9d;
    color: #fff;
    padding: 1rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex: 0 0 auto;
}

.ai-chat-popup-header h3 {
    margin: 0;
    font-size: 1rem;
}

.ai-chat-popup-minimize {
    background: none;
    border: none;
    color: #fff;
    font-size: 1.25rem;
    cursor: pointer;
    padding: 0;
    opacity: 0.8;
    transition: opacity 0.2s;
}

.ai-chat-popup-minimize:hover {
    opacity: 1;
}

.ai-chat-popup-content {
    flex: 1;
    overflow: auto;
}

.ai-chat-popup-content iframe {
    width: 100%;
    height: 100%;
    border: none;
}