/**
 * Learning Platform Styles
 * Phase 2: Learning Tab UI
 *
 * Extends CRM LinkedIn styles for learning platform
 * Reuses existing design system (cream/forest green/gold)
 */

/* ============================================
   Learning Sub-Tabs Navigation
   ============================================ */
.sffc-crm-learning-sub-tabs {
    display: flex;
    gap: 8px;
    padding: 16px 20px;
    background: var(--linkedin-card);
    border-bottom: 1px solid var(--linkedin-border);
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

.sffc-crm-learning-sub-tab {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 16px;
    border: 1px solid var(--linkedin-border);
    border-radius: 8px;
    background: transparent;
    color: var(--linkedin-text-muted);
    font-size: 14px;
    font-weight: 600;
    white-space: nowrap;
    cursor: pointer;
    transition: all 0.2s ease;
}

.sffc-crm-learning-sub-tab svg {
    width: 20px;
    height: 20px;
    stroke: currentColor;
}

.sffc-crm-learning-sub-tab:hover {
    background: var(--linkedin-hover);
    border-color: var(--senna-primary);
    color: var(--senna-primary);
}

.sffc-crm-learning-sub-tab.active {
    background: var(--senna-primary);
    border-color: var(--senna-primary);
    color: white;
}

.sffc-crm-learning-sub-tab.active svg {
    stroke: white;
}

/* ============================================
   Learning Content Areas
   ============================================ */
.sffc-crm-learning-content {
    display: none;
}

.sffc-crm-learning-content.active {
    display: block;
}

/* ============================================
   Learning Composer (Reuse Feed Composer)
   ============================================ */
.sffc-crm-learning-composer {
    margin: 20px;
}

.sffc-crm-learning-search {
    width: 100%;
}

/* ============================================
   Learning Filters
   ============================================ */
.sffc-crm-learning-filters {
    display: flex;
    gap: 12px;
    padding: 16px 20px;
    border-bottom: 1px solid var(--linkedin-border);
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

.sffc-crm-filter-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    border: 1px solid var(--linkedin-border);
    border-radius: 20px;
    background: var(--linkedin-card);
    color: var(--linkedin-text);
    font-size: 13px;
    font-weight: 600;
    white-space: nowrap;
    cursor: pointer;
    transition: all 0.2s ease;
}

.sffc-crm-filter-btn:hover {
    background: var(--linkedin-hover);
    border-color: var(--senna-primary);
}

.sffc-crm-filter-btn.active {
    background: var(--senna-accent);
    border-color: var(--senna-accent);
    color: var(--senna-primary);
}

.sffc-crm-filter-btn svg {
    width: 16px;
    height: 16px;
    stroke: currentColor;
}

/* ============================================
   Course Grid
   ============================================ */
.sffc-crm-learning-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 20px;
    padding: 20px;
}

/* ============================================
   Course Card (Based on Feed Card Design)
   ============================================ */
.sffc-crm-course-card {
    position: relative;
    background: var(--linkedin-card);
    border: 1px solid var(--linkedin-border);
    border-radius: 8px;
    padding: 20px;
    transition: all 0.2s ease;
    cursor: pointer;
}

.sffc-crm-course-card:hover {
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    border-color: var(--senna-primary);
    transform: translateY(-2px);
}

.sffc-crm-course-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    margin-bottom: 12px;
}

.sffc-crm-course-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--senna-accent);
    border-radius: 8px;
    flex-shrink: 0;
}

.sffc-crm-course-icon svg {
    width: 24px;
    height: 24px;
    stroke: var(--senna-primary);
}

.sffc-crm-difficulty-badge {
    padding: 4px 10px;
    background: var(--linkedin-hover);
    border-radius: 12px;
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.sffc-crm-difficulty-badge.beginner {
    background: #D1FAE5;
    color: #065F46;
}

.sffc-crm-difficulty-badge.intermediate {
    background: #FEF3C7;
    color: #92400E;
}

.sffc-crm-difficulty-badge.advanced {
    background: #FEE2E2;
    color: #991B1B;
}

.sffc-crm-difficulty-badge.expert {
    background: #E0E7FF;
    color: #3730A3;
}

.sffc-crm-course-title {
    font-size: 18px;
    font-weight: 700;
    color: var(--linkedin-text);
    margin: 12px 0 8px;
    line-height: 1.3;
}

.sffc-crm-course-instructor {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 13px;
    color: var(--linkedin-text-muted);
    margin-bottom: 12px;
}

.sffc-crm-course-instructor svg {
    width: 14px;
    height: 14px;
    stroke: currentColor;
}

.sffc-crm-course-meta {
    display: flex;
    gap: 16px;
    margin-bottom: 12px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--linkedin-border);
}

.sffc-crm-course-meta-item {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 13px;
    color: var(--linkedin-text-muted);
}

.sffc-crm-course-meta-item svg {
    width: 16px;
    height: 16px;
    stroke: currentColor;
}

.sffc-crm-course-description {
    font-size: 14px;
    color: var(--linkedin-text);
    line-height: 1.5;
    margin-bottom: 12px;
}

.sffc-crm-skills-taught {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-bottom: 12px;
}

.sffc-crm-skill-tag {
    padding: 4px 10px;
    background: var(--senna-accent);
    color: var(--senna-primary);
    border-radius: 12px;
    font-size: 12px;
    font-weight: 600;
}

.sffc-crm-course-progress {
    margin-bottom: 12px;
}

.sffc-crm-progress-bar {
    width: 100%;
    height: 6px;
    background: var(--linkedin-hover);
    border-radius: 3px;
    overflow: hidden;
    margin-bottom: 6px;
}

.sffc-crm-progress-fill {
    height: 100%;
    background: var(--senna-primary);
    border-radius: 3px;
    transition: width 0.3s ease;
}

.sffc-crm-progress-text {
    font-size: 12px;
    color: var(--linkedin-text-muted);
}

.sffc-crm-course-actions {
    display: flex;
    gap: 8px;
}

.sffc-crm-course-actions .sffc-crm-btn {
    flex: 1;
}

/* ============================================
   Loading State
   ============================================ */
.sffc-crm-loading-spinner {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 60px 20px;
}

.sffc-crm-loading-spinner .spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--linkedin-border);
    border-top-color: var(--senna-primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

.sffc-crm-loading-spinner p {
    margin-top: 16px;
    color: var(--linkedin-text-muted);
    font-size: 14px;
}

/* ============================================
   Load More Button
   ============================================ */
.sffc-crm-learning-load-more {
    padding: 20px;
    text-align: center;
}

/* ============================================
   My Learning Dashboard
   ============================================ */
.sffc-crm-my-learning-dashboard {
    padding: 20px;
}

.sffc-crm-learning-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px;
    margin-bottom: 32px;
}

.sffc-crm-stat-card {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 20px;
    background: var(--linkedin-card);
    border: 1px solid var(--linkedin-border);
    border-radius: 8px;
}

.sffc-crm-stat-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--senna-accent);
    border-radius: 8px;
    font-size: 24px;
}

.sffc-crm-stat-icon svg {
    width: 24px;
    height: 24px;
    stroke: var(--senna-primary);
}

.sffc-crm-stat-content {
    display: flex;
    flex-direction: column;
}

.sffc-crm-stat-value {
    font-size: 28px;
    font-weight: 700;
    color: var(--linkedin-text);
    line-height: 1;
}

.sffc-crm-stat-label {
    font-size: 13px;
    color: var(--linkedin-text-muted);
    margin-top: 4px;
}

.sffc-crm-learning-sections {
    display: flex;
    flex-direction: column;
    gap: 32px;
}

.sffc-crm-learning-section h3 {
    font-size: 20px;
    font-weight: 700;
    color: var(--linkedin-text);
    margin-bottom: 16px;
}

.sffc-crm-progress-courses,
.sffc-crm-completed-courses {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.sffc-crm-progress-course-card {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 16px;
    background: var(--linkedin-card);
    border: 1px solid var(--linkedin-border);
    border-radius: 8px;
}

.sffc-crm-progress-course-info {
    flex: 1;
}

.sffc-crm-progress-course-title {
    font-size: 16px;
    font-weight: 600;
    color: var(--linkedin-text);
    margin-bottom: 4px;
}

.sffc-crm-progress-course-meta {
    font-size: 13px;
    color: var(--linkedin-text-muted);
}

/* ============================================
   Mock Interview Hub
   ============================================ */
.sffc-crm-mock-interview-hub {
    padding: 20px;
}

.sffc-crm-interview-header {
    margin-bottom: 32px;
}

.sffc-crm-interview-header h2 {
    font-size: 24px;
    font-weight: 700;
    color: var(--linkedin-text);
    margin-bottom: 8px;
}

.sffc-crm-interview-header p {
    font-size: 15px;
    color: var(--linkedin-text-muted);
}

.sffc-crm-interview-types {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 20px;
    margin-bottom: 40px;
}

.sffc-crm-interview-card {
    padding: 24px;
    background: var(--linkedin-card);
    border: 2px solid var(--linkedin-border);
    border-radius: 12px;
    text-align: center;
    transition: all 0.2s ease;
}

.sffc-crm-interview-card:hover {
    border-color: var(--senna-primary);
    box-shadow: 0 6px 16px rgba(0, 0, 0, 0.1);
}

.sffc-crm-interview-icon {
    width: 80px;
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--senna-accent);
    border-radius: 16px;
    margin: 0 auto 16px;
}

.sffc-crm-interview-icon svg {
    stroke: var(--senna-primary);
}

.sffc-crm-interview-card h3 {
    font-size: 18px;
    font-weight: 700;
    color: var(--linkedin-text);
    margin-bottom: 8px;
}

.sffc-crm-interview-card p {
    font-size: 14px;
    color: var(--linkedin-text-muted);
    margin-bottom: 16px;
}

.sffc-crm-interview-history {
    margin-top: 40px;
}

.sffc-crm-interview-history h3 {
    font-size: 20px;
    font-weight: 700;
    color: var(--linkedin-text);
    margin-bottom: 16px;
}

/* ============================================
   Certificates Gallery
   ============================================ */
.sffc-crm-certificates-gallery {
    padding: 20px;
}

.sffc-crm-certificates-header {
    margin-bottom: 32px;
}

.sffc-crm-certificates-header h2 {
    font-size: 24px;
    font-weight: 700;
    color: var(--linkedin-text);
    margin-bottom: 8px;
}

.sffc-crm-certificates-header p {
    font-size: 15px;
    color: var(--linkedin-text-muted);
}

.sffc-crm-certs-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 24px;
}

.sffc-crm-cert-card {
    padding: 24px;
    background: var(--linkedin-card);
    border: 2px solid var(--linkedin-border);
    border-radius: 12px;
    text-align: center;
    transition: all 0.2s ease;
}

.sffc-crm-cert-card:hover {
    border-color: var(--senna-primary);
    box-shadow: 0 6px 16px rgba(0, 0, 0, 0.1);
}

.sffc-crm-cert-preview {
    width: 100%;
    aspect-ratio: 1.4;
    background: linear-gradient(135deg, var(--senna-accent) 0%, var(--linkedin-card) 100%);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 16px;
    border: 3px solid var(--senna-primary);
}

.sffc-crm-cert-title {
    font-size: 16px;
    font-weight: 700;
    color: var(--linkedin-text);
    margin-bottom: 8px;
}

.sffc-crm-cert-date {
    font-size: 13px;
    color: var(--linkedin-text-muted);
    margin-bottom: 16px;
}

.sffc-crm-cert-actions {
    display: flex;
    gap: 8px;
}

/* ============================================
   Empty States
   ============================================ */
.sffc-crm-empty-state {
    text-align: center;
    padding: 40px 20px;
    color: var(--linkedin-text-muted);
    font-size: 15px;
}

/* ============================================
   Mobile Responsive
   ============================================ */
@media (max-width: 768px) {
    .sffc-crm-learning-sub-tabs {
        gap: 6px;
        padding: 12px 16px;
    }

    .sffc-crm-learning-sub-tab {
        padding: 8px 12px;
        font-size: 13px;
    }

    .sffc-crm-learning-sub-tab svg {
        width: 16px;
        height: 16px;
    }

    .sffc-crm-learning-grid {
        grid-template-columns: 1fr;
        gap: 16px;
        padding: 16px;
    }

    .sffc-crm-learning-stats {
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
    }

    .sffc-crm-stat-card {
        padding: 16px;
    }

    .sffc-crm-stat-value {
        font-size: 24px;
    }

    .sffc-crm-interview-types {
        grid-template-columns: 1fr;
    }

    .sffc-crm-certs-grid {
        grid-template-columns: 1fr;
    }
}

/* ============================================
   Sidebar Stats Context Switching
   ============================================ */
.sffc-crm-profile-stats[data-stats="default"].hidden,
.sffc-crm-profile-stats[data-stats="learning"].hidden {
    display: none;
}

@media (max-width: 640px) {
    .sffc-crm-learning-filters {
        gap: 8px;
        padding: 12px 16px;
    }

    .sffc-crm-filter-btn {
        padding: 6px 12px;
        font-size: 12px;
    }

    .sffc-crm-course-meta {
        flex-direction: column;
        gap: 8px;
    }

    .sffc-crm-learning-stats {
        grid-template-columns: 1fr;
    }
}