/**
 * Modern Course Cards
 * Professional design with animations
 * Updated: 2026
 */

/* ================================
   COURSE CARD BASE
   ================================ */

.course-card,
.gz-course-card,
.playbook-card,
.gz-playbook-item {
    position: relative;
    background: #ffffff;
    border-radius: 16px;
    padding: 24px;
    box-shadow: 
        0 1px 3px rgba(0, 0, 0, 0.04),
        0 4px 12px rgba(0, 0, 0, 0.04);
    border: 1px solid rgba(0, 0, 0, 0.06);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    overflow: hidden;
}

/* Subtle gradient overlay on hover */
.course-card::before,
.gz-course-card::before,
.playbook-card::before,
.gz-playbook-item::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, #6366f1 0%, #8b5cf6 50%, #a855f7 100%);
    opacity: 0;
    transition: opacity 0.3s ease;
}

/* Hover Effects */
.course-card:hover,
.gz-course-card:hover,
.playbook-card:hover,
.gz-playbook-item:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow: 
        0 12px 24px rgba(99, 102, 241, 0.12),
        0 24px 48px rgba(0, 0, 0, 0.08);
    border-color: rgba(99, 102, 241, 0.2);
}

.course-card:hover::before,
.gz-course-card:hover::before,
.playbook-card:hover::before,
.gz-playbook-item:hover::before {
    opacity: 1;
}

/* ================================
   COURSE CARD CONTENT
   ================================ */

/* Course Title */
.course-card .course-title,
.course-card h3,
.gz-course-card h3,
.playbook-card .playbook-title,
.gz-playbook-item h3,
.gz-course-title {
    font-family: "Inter", -apple-system, BlinkMacSystemFont, sans-serif;
    font-size: 1.25rem;
    font-weight: 700;
    color: #0f172a;
    margin-bottom: 12px;
    line-height: 1.4;
    letter-spacing: -0.01em;
}

/* Course Description */
.course-card .course-description,
.course-card p,
.gz-course-card p,
.playbook-card p,
.gz-playbook-item p,
.gz-course-desc {
    font-family: "Inter", sans-serif;
    font-size: 0.9375rem;
    color: #64748b;
    line-height: 1.65;
    margin-bottom: 16px;
}

/* Course Meta (Duration, Lessons, etc.) */
.course-card .course-meta,
.gz-course-meta,
.playbook-meta {
    display: flex;
    gap: 16px;
    font-family: "Inter", sans-serif;
    font-size: 0.8125rem;
    color: #94a3b8;
    margin-bottom: 16px;
}

.course-card .course-meta span,
.gz-course-meta span {
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

/* Course Badge/Tag */
.course-card .course-badge,
.gz-course-badge,
.playbook-badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 6px 12px;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.1) 0%, rgba(168, 85, 247, 0.1) 100%);
    color: #6366f1;
    font-family: "Inter", sans-serif;
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: 100px;
    text-transform: uppercase;
    letter-spacing: 0.03em;
}

/* Course Progress */
.course-card .progress-bar,
.gz-progress-bar {
    height: 6px;
    background: #e2e8f0;
    border-radius: 100px;
    overflow: hidden;
    margin: 16px 0;
}

.course-card .progress-fill,
.gz-progress-fill {
    height: 100%;
    background: linear-gradient(90deg, #6366f1 0%, #8b5cf6 100%);
    border-radius: 100px;
    transition: width 0.6s ease;
}

/* ================================
   COURSE CARD ACTIONS
   ================================ */

.course-card .card-actions,
.gz-course-actions {
    display: flex;
    gap: 12px;
    margin-top: 20px;
    padding-top: 16px;
    border-top: 1px solid #f1f5f9;
}

.course-card .btn,
.gz-course-btn {
    flex: 1;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 20px;
    font-family: "Inter", sans-serif;
    font-size: 0.875rem;
    font-weight: 600;
    border-radius: 10px;
    text-decoration: none;
    transition: all 0.3s ease;
    cursor: pointer;
}

.course-card .btn-primary,
.gz-course-btn-primary {
    background: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);
    color: #fff;
    border: none;
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.3);
}

.course-card .btn-primary:hover,
.gz-course-btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(99, 102, 241, 0.4);
}

.course-card .btn-secondary,
.gz-course-btn-secondary {
    background: #f8fafc;
    color: #475569;
    border: 1px solid #e2e8f0;
}

.course-card .btn-secondary:hover,
.gz-course-btn-secondary:hover {
    background: #f1f5f9;
    border-color: #cbd5e1;
}

/* ================================
   COURSE CARD THUMBNAIL
   ================================ */

.course-card .course-thumbnail,
.gz-course-thumb {
    position: relative;
    margin: -24px -24px 20px -24px;
    height: 160px;
    overflow: hidden;
    border-radius: 16px 16px 0 0;
}

.course-card .course-thumbnail img,
.gz-course-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.course-card:hover .course-thumbnail img,
.gz-course-card:hover .gz-course-thumb img {
    transform: scale(1.05);
}

/* Thumbnail overlay */
.course-card .course-thumbnail::after,
.gz-course-thumb::after {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, transparent 50%, rgba(0, 0, 0, 0.4) 100%);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.course-card:hover .course-thumbnail::after,
.gz-course-card:hover .gz-course-thumb::after {
    opacity: 1;
}

/* ================================
   COURSE GRID LAYOUT
   ================================ */

.courses-grid,
.gz-courses-grid,
.playbook-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 24px;
}

@media (max-width: 768px) {
    .courses-grid,
    .gz-courses-grid,
    .playbook-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }
    
    .course-card,
    .gz-course-card,
    .playbook-card,
    .gz-playbook-item {
        padding: 20px;
    }
    
    .course-card:hover,
    .gz-course-card:hover {
        transform: translateY(-4px);
    }
}

/* ================================
   DARK MODE SUPPORT
   ================================ */

@media (prefers-color-scheme: dark) {
    .course-card,
    .gz-course-card,
    .playbook-card,
    .gz-playbook-item {
        background: #1e293b;
        border-color: rgba(255, 255, 255, 0.08);
    }
    
    .course-card .course-title,
    .course-card h3,
    .gz-course-title {
        color: #f1f5f9;
    }
    
    .course-card p,
    .gz-course-desc {
        color: #94a3b8;
    }
    
    .course-card .card-actions {
        border-top-color: rgba(255, 255, 255, 0.08);
    }
    
    .course-card .btn-secondary,
    .gz-course-btn-secondary {
        background: rgba(255, 255, 255, 0.05);
        border-color: rgba(255, 255, 255, 0.1);
        color: #e2e8f0;
    }
}

/* ================================
   COURSE CONTENT STYLES (Udemy/Skool Style)
   ================================ */

/* Course Hero */
.course-hero {
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
    color: white;
    padding: 48px;
    border-radius: 20px;
    margin-bottom: 32px;
    position: relative;
    overflow: hidden;
}

.course-hero::before {
    content: "";
    position: absolute;
    top: -50%;
    right: -20%;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(99, 102, 241, 0.2) 0%, transparent 70%);
}

.course-hero .course-badge {
    display: inline-block;
    padding: 8px 16px;
    background: rgba(99, 102, 241, 0.2);
    border: 1px solid rgba(99, 102, 241, 0.3);
    border-radius: 100px;
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 16px;
}

.course-hero h1 {
    font-family: "Montserrat", "Inter", sans-serif;
    font-size: clamp(28px, 4vw, 42px);
    font-weight: 800;
    margin-bottom: 12px;
    line-height: 1.2;
}

.course-hero .course-tagline {
    font-size: 1.125rem;
    color: rgba(255, 255, 255, 0.8);
    margin: 0;
}

/* Course Stats */
.course-stats {
    display: flex;
    flex-wrap: wrap;
    gap: 24px;
    padding: 24px;
    background: #f8fafc;
    border-radius: 16px;
    margin-bottom: 32px;
    border: 1px solid #e2e8f0;
}

.course-stats .stat {
    font-family: "Inter", sans-serif;
    font-size: 0.9375rem;
    color: #64748b;
}

.course-stats .stat strong {
    color: #0f172a;
    font-weight: 700;
}

/* Learning Outcomes */
.learning-outcomes {
    list-style: none;
    padding: 0;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 12px;
    margin-bottom: 32px;
}

.learning-outcomes li {
    font-family: "Inter", sans-serif;
    font-size: 0.9375rem;
    color: #334155;
    padding: 12px 16px;
    background: #f8fafc;
    border-radius: 10px;
    border-left: 3px solid #6366f1;
}

/* Module Styles */
.module {
    background: #ffffff;
    border: 1px solid #e2e8f0;
    border-radius: 16px;
    margin-bottom: 16px;
    overflow: hidden;
}

.module h3 {
    font-family: "Inter", sans-serif;
    font-size: 1.0625rem;
    font-weight: 700;
    padding: 20px 24px;
    margin: 0;
    background: #f8fafc;
    border-bottom: 1px solid #e2e8f0;
    color: #0f172a;
}

.module ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.module ul li {
    font-family: "Inter", sans-serif;
    font-size: 0.9375rem;
    padding: 16px 24px;
    border-bottom: 1px solid #f1f5f9;
    color: #475569;
    display: flex;
    align-items: center;
    gap: 12px;
}

.module ul li:last-child {
    border-bottom: none;
}

.module ul li:hover {
    background: #fafafa;
}

/* Instructor Card */
.instructor {
    display: flex;
    flex-direction: column;
    gap: 4px;
    padding: 24px;
    background: linear-gradient(135deg, #f8fafc 0%, #f1f5f9 100%);
    border-radius: 16px;
    border: 1px solid #e2e8f0;
}

.instructor strong {
    font-family: "Inter", sans-serif;
    font-size: 1.125rem;
    color: #0f172a;
}

/* ================================
   COURSE CARD THUMBNAILS (Gradient Placeholders)
   ================================ */

.course-card[data-course="meta-ads"] .course-thumbnail,
.gz-course-card[data-id="106"] .gz-course-thumb {
    background: linear-gradient(135deg, #3b82f6 0%, #1d4ed8 100%);
}

.course-card[data-course="ai-content"] .course-thumbnail,
.gz-course-card[data-id="107"] .gz-course-thumb {
    background: linear-gradient(135deg, #8b5cf6 0%, #6d28d9 100%);
}

.course-card[data-course="viral"] .course-thumbnail,
.gz-course-card[data-id="108"] .gz-course-thumb {
    background: linear-gradient(135deg, #ec4899 0%, #db2777 100%);
}

.course-card[data-course="video"] .course-thumbnail,
.gz-course-card[data-id="109"] .gz-course-thumb {
    background: linear-gradient(135deg, #f59e0b 0%, #d97706 100%);
}

.course-card[data-course="tracking"] .course-thumbnail,
.gz-course-card[data-id="110"] .gz-course-thumb {
    background: linear-gradient(135deg, #10b981 0%, #059669 100%);
}

.course-card[data-course="prompt"] .course-thumbnail,
.gz-course-card[data-id="111"] .gz-course-thumb {
    background: linear-gradient(135deg, #6366f1 0%, #4f46e5 100%);
}

/* Placeholder icon in thumbnail */
.course-thumbnail::before,
.gz-course-thumb::before {
    content: "📚";
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 48px;
    opacity: 0.3;
}

/* ================================
   RESPONSIVE
   ================================ */

@media (max-width: 768px) {
    .course-hero {
        padding: 32px 24px;
    }
    
    .course-stats {
        flex-direction: column;
        gap: 12px;
    }
    
    .learning-outcomes {
        grid-template-columns: 1fr;
    }
    
    .module h3 {
        padding: 16px 20px;
    }
    
    .module ul li {
        padding: 14px 20px;
    }
}