/**
 * Course Viewer Styles
 * Phase 3: Course Content & Progress Tracking
 *
 * Styles for individual course pages and lesson viewer
 */

/* ============================================
   Course Viewer Wrapper
   ============================================ */
.sffc-course-viewer-wrapper {
    max-width: 1400px;
    margin: 0 auto;
    padding: 40px 20px;
    background: var(--linkedin-bg, #F4F2EE);
}

.sffc-course-overview {
    background: var(--linkedin-card, #FFFFFF);
    border-radius: 12px;
    overflow: hidden;
}

/* ============================================
   Course Header
   ============================================ */
.sffc-course-header {
    background: linear-gradient(135deg, #2F5233 0%, #4A7C4E 100%);
    color: #FFFFFF;
    padding: 60px 40px;
    position: relative;
}

.sffc-course-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1200 120" preserveAspectRatio="none"><path d="M0,0 L1200,0 L1200,120 L0,60 Z" fill="rgba(255,255,255,0.03)"/></svg>') no-repeat bottom;
    background-size: 100% 120px;
    pointer-events: none;
}

.sffc-course-header-content {
    position: relative;
    z-index: 1;
    max-width: 900px;
}

.sffc-course-breadcrumb {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 16px;
    font-size: 14px;
    opacity: 0.9;
}

.sffc-course-breadcrumb a {
    color: #FFFFFF;
    text-decoration: none;
    transition: opacity 0.2s;
}

.sffc-course-breadcrumb a:hover {
    opacity: 0.7;
}

.sffc-course-title {
    font-size: 42px;
    font-weight: 700;
    margin: 0 0 16px 0;
    line-height: 1.2;
}

.sffc-course-subtitle {
    font-size: 18px;
    line-height: 1.6;
    opacity: 0.95;
    margin: 0 0 24px 0;
}

.sffc-course-meta-bar {
    display: flex;
    flex-wrap: wrap;
    gap: 24px;
    margin-bottom: 32px;
}

.sffc-course-meta-item {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 15px;
}

.sffc-course-meta-item svg {
    stroke: currentColor;
}

.sffc-course-progress-bar {
    display: flex;
    align-items: center;
    gap: 16px;
}

.sffc-progress-bar-wrapper {
    flex: 1;
    max-width: 400px;
}

.sffc-progress-bar {
    width: 100%;
    height: 8px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 4px;
    overflow: hidden;
    margin-bottom: 6px;
}

.sffc-progress-fill {
    height: 100%;
    background: #B8860B;
    border-radius: 4px;
    transition: width 0.3s ease;
}

.sffc-progress-text {
    font-size: 14px;
    opacity: 0.9;
}

.sffc-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 24px;
    border-radius: 8px;
    font-size: 15px;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    border: none;
    transition: all 0.2s ease;
}

.sffc-btn-primary {
    background: #B8860B;
    color: #FFFFFF;
}

.sffc-btn-primary:hover {
    background: #9A7209;
    transform: translateY(-1px);
}

.sffc-enroll-course-btn {
    font-size: 16px;
    padding: 14px 32px;
}

/* ============================================
   Course Curriculum
   ============================================ */
.sffc-course-curriculum {
    padding: 40px;
}

.sffc-course-curriculum > h2 {
    font-size: 28px;
    font-weight: 700;
    margin: 0 0 24px 0;
    color: var(--linkedin-text, #191919);
}

.sffc-module-card {
    background: var(--linkedin-bg, #F4F2EE);
    border: 1px solid var(--linkedin-border, #E0DDD7);
    border-radius: 12px;
    padding: 24px;
    margin-bottom: 20px;
}

.sffc-module-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 16px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--linkedin-border, #E0DDD7);
}

.sffc-module-header h3 {
    font-size: 20px;
    font-weight: 600;
    margin: 0;
    color: var(--linkedin-text, #191919);
}

.sffc-module-number {
    display: inline-block;
    padding: 4px 12px;
    background: var(--senna-primary, #2F5233);
    color: #FFFFFF;
    border-radius: 6px;
    font-size: 13px;
    font-weight: 600;
    margin-right: 12px;
}

.sffc-module-lessons {
    font-size: 14px;
    color: var(--linkedin-text-muted, #666666);
}

.sffc-lesson-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.sffc-lesson-item {
    margin-bottom: 8px;
}

.sffc-lesson-link {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    background: var(--linkedin-card, #FFFFFF);
    border: 1px solid var(--linkedin-border, #E0DDD7);
    border-radius: 8px;
    text-decoration: none;
    color: var(--linkedin-text, #191919);
    transition: all 0.2s ease;
}

.sffc-lesson-link:hover {
    border-color: var(--senna-primary, #2F5233);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
    transform: translateX(4px);
}

.sffc-lesson-link.locked {
    opacity: 0.5;
    cursor: not-allowed;
    pointer-events: none;
}

.sffc-lesson-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    background: var(--linkedin-hover, #F0EDE8);
    border-radius: 50%;
    flex-shrink: 0;
}

.sffc-lesson-icon svg {
    width: 16px;
    height: 16px;
    stroke: var(--senna-primary, #2F5233);
}

.sffc-lesson-item.completed .sffc-lesson-icon {
    background: #D1FAE5;
}

.sffc-lesson-item.completed .sffc-lesson-icon svg {
    stroke: #065F46;
}

.sffc-lesson-title {
    flex: 1;
    font-size: 15px;
    font-weight: 500;
}

.sffc-lesson-badge {
    padding: 4px 10px;
    border-radius: 6px;
    font-size: 12px;
    font-weight: 600;
}

.sffc-lesson-badge {
    background: #FEF3C7;
    color: #92400E;
}

.sffc-lesson-link.locked .sffc-lesson-badge {
    background: #E5E7EB;
    color: #6B7280;
}

/* ============================================
   Learning Outcomes
   ============================================ */
.sffc-course-outcomes {
    padding: 0 40px 40px 40px;
}

.sffc-course-outcomes h2 {
    font-size: 24px;
    font-weight: 700;
    margin: 0 0 20px 0;
    color: var(--linkedin-text, #191919);
}

.sffc-outcomes-list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 16px;
}

.sffc-outcomes-list li {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    padding: 16px;
    background: var(--linkedin-bg, #F4F2EE);
    border-radius: 8px;
    font-size: 15px;
    line-height: 1.5;
}

.sffc-outcomes-list svg {
    flex-shrink: 0;
    margin-top: 2px;
    stroke: var(--senna-primary, #2F5233);
}

/* ============================================
   Responsive Design
   ============================================ */
@media (max-width: 768px) {
    .sffc-course-viewer-wrapper {
        padding: 20px 12px;
    }

    .sffc-course-header {
        padding: 40px 20px;
    }

    .sffc-course-title {
        font-size: 32px;
    }

    .sffc-course-subtitle {
        font-size: 16px;
    }

    .sffc-course-meta-bar {
        gap: 16px;
    }

    .sffc-course-meta-item {
        font-size: 14px;
    }

    .sffc-course-progress-bar {
        flex-direction: column;
        align-items: stretch;
    }

    .sffc-progress-bar-wrapper {
        max-width: 100%;
    }

    .sffc-course-curriculum,
    .sffc-course-outcomes {
        padding: 20px;
    }

    .sffc-module-card {
        padding: 16px;
    }

    .sffc-module-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 8px;
    }

    .sffc-outcomes-list {
        grid-template-columns: 1fr;
    }
}