/* ============================================
   PREMIUM COURSE DETAIL PAGE STYLES
   Modern, Clean & Professional UI/UX Design
   ============================================ */

:root {
    --premium-primary: #0B2A4A;
    --premium-secondary: #1E5A8E;
    --premium-accent: #FFD700;
    --premium-success: #10B981;
    --premium-danger: #EF4444;
    --premium-warning: #F59E0B;
    --premium-info: #3B82F6;
    --premium-light: #F8FAFC;
    --premium-dark: #1E293B;
    --premium-gray: #64748B;
    --premium-border: #E2E8F0;
    --premium-shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --premium-shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --premium-shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --premium-shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    --premium-radius-sm: 0.375rem;
    --premium-radius-md: 0.5rem;
    --premium-radius-lg: 0.75rem;
    --premium-radius-xl: 1rem;
    --premium-transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ============================================
   HERO SECTION
   ============================================ */

.premium-course-hero {
    background: linear-gradient(135deg, #0B2A4A 0%, #1E5A8E 100%);
    padding: 3rem 0 4rem;
    position: relative;
    overflow: hidden;
}

.hero-background-pattern {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        radial-gradient(circle at 20% 50%, rgba(255, 255, 255, 0.05) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(255, 255, 255, 0.05) 0%, transparent 50%);
    pointer-events: none;
}

/* Breadcrumb */
.premium-breadcrumb {
    margin-bottom: 2rem;
}

.premium-breadcrumb .breadcrumb {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    padding: 0.75rem 1.25rem;
    border-radius: var(--premium-radius-lg);
    margin-bottom: 0;
}

.premium-breadcrumb .breadcrumb-item {
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.875rem;
}

.premium-breadcrumb .breadcrumb-item a {
    color: #fff;
    text-decoration: none;
    transition: var(--premium-transition);
}

.premium-breadcrumb .breadcrumb-item a:hover {
    color: var(--premium-accent);
}

.premium-breadcrumb .breadcrumb-item.active {
    color: rgba(255, 255, 255, 0.6);
}

.premium-breadcrumb .breadcrumb-item + .breadcrumb-item::before {
    color: rgba(255, 255, 255, 0.5);
}

/* Course Meta Badges */
.course-meta-badges {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-bottom: 1.5rem;
}

.badge-category,
.badge-level,
.badge-featured {
    padding: 0.5rem 1rem;
    border-radius: var(--premium-radius-lg);
    font-size: 0.875rem;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.badge-category {
    background: rgba(255, 255, 255, 0.15);
    color: #fff;
    backdrop-filter: blur(10px);
}

.badge-level {
    background: rgba(255, 255, 255, 0.2);
    color: #fff;
    backdrop-filter: blur(10px);
}

.badge-level-beginner {
    background: rgba(16, 185, 129, 0.2);
    color: #10B981;
}

.badge-level-intermediate {
    background: rgba(245, 158, 11, 0.2);
    color: #F59E0B;
}

.badge-level-advanced {
    background: rgba(239, 68, 68, 0.2);
    color: #EF4444;
}

.badge-featured {
    background: linear-gradient(135deg, #FFD700 0%, #FFA500 100%);
    color: var(--premium-dark);
}

/* Course Title */
.premium-course-title {
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 800;
    color: #fff;
    line-height: 1.2;
    margin-bottom: 1rem;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.premium-course-subtitle {
    font-size: 1.25rem;
    color: rgba(255, 255, 255, 0.9);
    line-height: 1.6;
    margin-bottom: 2rem;
}

/* Course Stats Row */
.course-stats-row {
    display: flex;
    flex-wrap: wrap;
    gap: 2rem;
    margin-bottom: 2rem;
    padding: 1.5rem;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border-radius: var(--premium-radius-lg);
}

.stat-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: #fff;
    font-size: 0.875rem;
}

.stat-rating {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.rating-number {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--premium-accent);
}

.rating-stars {
    color: var(--premium-accent);
    font-size: 1rem;
}

.rating-count {
    color: rgba(255, 255, 255, 0.7);
}

.stat-icon {
    font-size: 1.25rem;
    color: var(--premium-accent);
}

.stat-text {
    color: rgba(255, 255, 255, 0.9);
}

.stat-text strong {
    color: #fff;
    font-weight: 600;
}

/* Quick Info Pills */
.quick-info-pills {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
}

.info-pill {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.25rem;
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(10px);
    border-radius: var(--premium-radius-lg);
    color: #fff;
    font-size: 0.875rem;
    font-weight: 500;
    transition: var(--premium-transition);
}

.info-pill:hover {
    background: rgba(255, 255, 255, 0.25);
    transform: translateY(-2px);
}

.info-pill i {
    font-size: 1.125rem;
    color: var(--premium-accent);
}

/* ============================================
   ENROLLMENT CARD (STICKY)
   ============================================ */

.premium-enrollment-card {
    background: #fff;
    border-radius: var(--premium-radius-xl);
    box-shadow: var(--premium-shadow-xl);
    overflow: hidden;
    position: sticky;
    top: 2rem;
    transition: var(--premium-transition);
}

.premium-enrollment-card:hover {
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
}

/* Card Image */
.enrollment-card-image {
    position: relative;
    height: 220px;
    overflow: hidden;
}

.enrollment-card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--premium-transition);
}

.premium-enrollment-card:hover .enrollment-card-image img {
    transform: scale(1.05);
}

.image-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(to bottom, transparent 0%, rgba(0, 0, 0, 0.3) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: var(--premium-transition);
}

.premium-enrollment-card:hover .image-overlay {
    opacity: 1;
}

.play-icon {
    width: 70px;
    height: 70px;
    background: rgba(255, 255, 255, 0.95);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    color: var(--premium-primary);
    transition: var(--premium-transition);
}

.play-icon:hover {
    transform: scale(1.1);
    background: #fff;
}

/* Card Body */
.enrollment-card-body {
    padding: 2rem;
}

/* Pricing Section */
.pricing-section {
    margin-bottom: 2rem;
}

.price-main {
    display: flex;
    align-items: baseline;
    gap: 1rem;
    margin-bottom: 1rem;
}

.current-price {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--premium-primary);
    line-height: 1;
}

.original-price {
    font-size: 1.5rem;
    color: var(--premium-gray);
    text-decoration: line-through;
}

.discount-badge-large {
    display: inline-flex;
    flex-direction: column;
    padding: 0.75rem 1.25rem;
    background: linear-gradient(135deg, #EF4444 0%, #DC2626 100%);
    border-radius: var(--premium-radius-md);
    color: #fff;
}

.discount-percent {
    font-size: 1.25rem;
    font-weight: 700;
    line-height: 1;
}

.discount-text {
    font-size: 0.75rem;
    opacity: 0.9;
    margin-top: 0.25rem;
}

/* CTA Buttons */
.enrollment-actions {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-bottom: 2rem;
}

.btn-enroll-premium {
    width: 100%;
    padding: 1rem 2rem;
    background: linear-gradient(135deg, var(--premium-primary) 0%, var(--premium-secondary) 100%);
    color: #fff;
    border: none;
    border-radius: var(--premium-radius-lg);
    font-size: 1.125rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    transition: var(--premium-transition);
    cursor: pointer;
    box-shadow: 0 4px 14px 0 rgba(11, 42, 74, 0.39);
}

.btn-enroll-premium:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px 0 rgba(11, 42, 74, 0.5);
}

.btn-inquire-premium {
    width: 100%;
    padding: 1rem 2rem;
    background: #25D366;
    color: #fff;
    border: none;
    border-radius: var(--premium-radius-lg);
    font-size: 1rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    text-decoration: none;
    transition: var(--premium-transition);
}

.btn-inquire-premium:hover {
    background: #1ebe5d;
    transform: translateY(-2px);
    color: #fff;
}

/* Course Includes */
.course-includes-section {
    padding: 1.5rem;
    background: var(--premium-light);
    border-radius: var(--premium-radius-lg);
    margin-bottom: 1.5rem;
}

.includes-title {
    font-size: 1rem;
    font-weight: 700;
    color: var(--premium-dark);
    margin-bottom: 1rem;
}

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

.includes-list li {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    padding: 0.5rem 0;
    color: var(--premium-gray);
    font-size: 0.875rem;
}

.includes-list li i {
    color: var(--premium-success);
    font-size: 1.125rem;
    margin-top: 0.125rem;
}

/* Share Section */
.share-section {
    padding-top: 1.5rem;
    border-top: 1px solid var(--premium-border);
}

.share-label {
    display: block;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--premium-dark);
    margin-bottom: 0.75rem;
}

.share-buttons {
    display: flex;
    gap: 0.75rem;
}

.share-btn {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--premium-light);
    border-radius: var(--premium-radius-md);
    color: var(--premium-gray);
    text-decoration: none;
    transition: var(--premium-transition);
}

.share-btn:hover {
    background: var(--premium-primary);
    color: #fff;
    transform: translateY(-2px);
}

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

@media (max-width: 991px) {
    .premium-enrollment-card {
        position: static;
        margin-top: 2rem;
    }
    
    .course-stats-row {
        flex-direction: column;
        gap: 1rem;
    }
    
    .quick-info-pills {
        justify-content: center;
    }
}

@media (max-width: 767px) {
    .premium-course-hero {
        padding: 2rem 0 3rem;
    }
    
    .premium-course-title {
        font-size: 1.75rem;
    }
    
    .premium-course-subtitle {
        font-size: 1rem;
    }
    
    .course-meta-badges {
        justify-content: center;
    }
    
    .course-stats-row {
        padding: 1rem;
    }
    
    .enrollment-card-body {
        padding: 1.5rem;
    }
    
    .current-price {
        font-size: 2rem;
    }
}

/* ============================================
   ANIMATIONS
   ============================================ */

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

.premium-course-hero .course-hero-content > * {
    animation: fadeInUp 0.6s ease-out backwards;
}

.premium-course-hero .course-hero-content > *:nth-child(1) { animation-delay: 0.1s; }
.premium-course-hero .course-hero-content > *:nth-child(2) { animation-delay: 0.2s; }
.premium-course-hero .course-hero-content > *:nth-child(3) { animation-delay: 0.3s; }
.premium-course-hero .course-hero-content > *:nth-child(4) { animation-delay: 0.4s; }
.premium-course-hero .course-hero-content > *:nth-child(5) { animation-delay: 0.5s; }
.premium-course-hero .course-hero-content > *:nth-child(6) { animation-delay: 0.6s; }

.premium-enrollment-card {
    animation: fadeInUp 0.6s ease-out 0.3s backwards;
}