/**
 * slider.css - 메인 슬라이더 스타일
 * Carousel (Classic Horizontal) 타입
 * 마산집수리 교육 (행집사)
 */

/* ========================================
   HERO SLIDER
======================================== */
.hero-slider {
    position: relative;
    width: 100%;
    overflow: hidden;
    background: var(--gradient-dark);
}

.hero-slider-inner {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
}

/* Slider Container */
.slider-container {
    position: relative;
    width: 100%;
    height: 100%;
    overflow: hidden;
}

.slider-wrapper {
    display: flex;
    transition: transform 500ms ease;
    height: 100%;
}

.slider-slide {
    flex: 0 0 100%;
    width: 100%;
    min-height: 100vh;
    position: relative;
    display: flex;
    align-items: center;
}

/* Slide Background */
.slide-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
}

.slide-bg::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--gradient-dark);
    opacity: 0.85;
    z-index: 2;
}

.slide-bg img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* Slide Content */
.slide-content {
    position: relative;
    z-index: 10;
    width: 100%;
    padding: var(--spacing-4xl) var(--spacing-lg);
}

.slide-content .container {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.slide-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-lg);
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-full);
    color: var(--text-white);
    font-size: var(--font-size-sm);
    font-weight: 500;
    margin-bottom: var(--spacing-lg);
    animation: slideIn 0.6s ease-out;
}

.slide-badge-icon {
    font-size: 16px;
}

.slide-title {
    font-size: var(--font-size-4xl);
    font-weight: 800;
    color: var(--text-white);
    line-height: var(--line-height-tight);
    margin-bottom: var(--spacing-md);
    animation: slideIn 0.6s ease-out 0.1s both;
}

.slide-title .highlight {
    background: var(--gradient-cosmic);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.slide-subtitle {
    font-size: var(--font-size-lg);
    color: rgba(255, 255, 255, 0.8);
    max-width: 600px;
    margin: 0 auto var(--spacing-xl);
    line-height: var(--line-height-relaxed);
    animation: slideIn 0.6s ease-out 0.2s both;
}

.slide-cta {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    animation: slideIn 0.6s ease-out 0.3s both;
}

.slide-cta .btn {
    padding: var(--spacing-md) var(--spacing-2xl);
}

.slide-cta .btn-primary {
    background: var(--text-white);
    color: var(--primary);
}

.slide-cta .btn-primary:hover {
    background: var(--bg-secondary);
}

.slide-cta .btn-outline {
    border-color: rgba(255, 255, 255, 0.5);
    color: var(--text-white);
}

.slide-cta .btn-outline:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--text-white);
}

/* Slide Decorations */
.slide-decoration {
    position: absolute;
    pointer-events: none;
    z-index: 5;
}

.slide-decoration-1 {
    top: 20%;
    right: 10%;
    width: 200px;
    height: 200px;
    background: radial-gradient(circle, rgba(102, 126, 234, 0.4) 0%, transparent 70%);
    border-radius: 50%;
    filter: blur(40px);
    animation: float 6s ease-in-out infinite;
}

.slide-decoration-2 {
    bottom: 20%;
    left: 10%;
    width: 150px;
    height: 150px;
    background: radial-gradient(circle, rgba(240, 147, 251, 0.3) 0%, transparent 70%);
    border-radius: 50%;
    filter: blur(30px);
    animation: float 6s ease-in-out infinite 2s;
}

.slide-decoration-3 {
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(118, 75, 162, 0.2) 0%, transparent 60%);
    border-radius: 50%;
    filter: blur(60px);
    animation: pulse 8s ease-in-out infinite;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes float {
    0%, 100% {
        transform: translateY(0) scale(1);
    }
    50% {
        transform: translateY(-20px) scale(1.05);
    }
}

@keyframes pulse {
    0%, 100% {
        opacity: 0.2;
        transform: translate(-50%, -50%) scale(1);
    }
    50% {
        opacity: 0.3;
        transform: translate(-50%, -50%) scale(1.1);
    }
}

/* ========================================
   SLIDER NAVIGATION
======================================== */
.slider-nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    z-index: 20;
}

.slider-nav-prev {
    left: var(--spacing-lg);
}

.slider-nav-next {
    right: var(--spacing-lg);
}

.slider-nav-btn {
    width: 48px;
    height: 48px;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--transition-base);
    color: var(--text-white);
}

.slider-nav-btn:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: scale(1.1);
}

.slider-nav-btn svg {
    width: 24px;
    height: 24px;
}

/* ========================================
   SLIDER PAGINATION
======================================== */
.slider-pagination {
    position: absolute;
    bottom: var(--spacing-2xl);
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: var(--spacing-sm);
    z-index: 20;
}

.slider-dot {
    width: 12px;
    height: 12px;
    background: rgba(255, 255, 255, 0.3);
    border: none;
    border-radius: var(--radius-full);
    cursor: pointer;
    transition: all var(--transition-base);
    padding: 0;
}

.slider-dot:hover {
    background: rgba(255, 255, 255, 0.5);
}

.slider-dot.active {
    width: 32px;
    background: var(--text-white);
}

/* ========================================
   SLIDER PROGRESS
======================================== */
.slider-progress {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: rgba(255, 255, 255, 0.1);
    z-index: 20;
}

.slider-progress-bar {
    height: 100%;
    background: var(--gradient-primary);
    width: 0;
    transition: width linear;
}

/* ========================================
   SCROLL INDICATOR
======================================== */
.scroll-indicator {
    position: absolute;
    bottom: var(--spacing-3xl);
    left: 50%;
    transform: translateX(-50%);
    z-index: 20;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-sm);
    color: rgba(255, 255, 255, 0.6);
    font-size: var(--font-size-sm);
    cursor: pointer;
}

.scroll-mouse {
    width: 26px;
    height: 40px;
    border: 2px solid rgba(255, 255, 255, 0.4);
    border-radius: 13px;
    position: relative;
}

.scroll-wheel {
    width: 4px;
    height: 8px;
    background: rgba(255, 255, 255, 0.6);
    border-radius: 2px;
    position: absolute;
    top: 8px;
    left: 50%;
    transform: translateX(-50%);
    animation: scrollWheel 2s ease-in-out infinite;
}

@keyframes scrollWheel {
    0%, 100% {
        opacity: 1;
        transform: translateX(-50%) translateY(0);
    }
    50% {
        opacity: 0.3;
        transform: translateX(-50%) translateY(10px);
    }
}

/* ========================================
   COURSE CAROUSEL
======================================== */
.course-carousel {
    position: relative;
    padding: var(--spacing-xl) 0;
}

.course-carousel-inner {
    overflow: hidden;
}

.course-carousel-track {
    display: flex;
    gap: var(--spacing-lg);
    transition: transform 500ms ease;
}

.course-carousel-item {
    flex: 0 0 calc(100% - var(--spacing-lg));
    max-width: 400px;
}

/* Course Card */
.course-card {
    background: var(--bg-primary);
    border-radius: var(--radius-2xl);
    overflow: hidden;
    border: 1px solid var(--border-light);
    transition: all var(--transition-base);
    height: 100%;
}

.course-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
}

.course-card.featured {
    border-color: var(--primary);
    box-shadow: var(--shadow-cosmic);
}

.course-card-badge {
    position: absolute;
    top: var(--spacing-md);
    left: var(--spacing-md);
    padding: var(--spacing-xs) var(--spacing-sm);
    background: var(--gradient-primary);
    color: var(--text-white);
    font-size: var(--font-size-xs);
    font-weight: 700;
    border-radius: var(--radius-md);
    z-index: 2;
}

.course-card-image {
    position: relative;
    aspect-ratio: 16/10;
    overflow: hidden;
}

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

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

.course-card-content {
    padding: var(--spacing-lg);
}

.course-card-meta {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-sm);
}

.course-card-duration,
.course-card-level {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: var(--font-size-sm);
    color: var(--text-muted);
}

.course-card-title {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
}

.course-card-description {
    font-size: var(--font-size-sm);
    color: var(--text-muted);
    line-height: var(--line-height-relaxed);
    margin-bottom: var(--spacing-md);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.course-card-price {
    display: flex;
    align-items: baseline;
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-md);
}

.course-card-price .price {
    font-size: var(--font-size-2xl);
    font-weight: 800;
    color: var(--primary);
}

.course-card-price .unit {
    font-size: var(--font-size-sm);
    color: var(--text-muted);
}

.course-card-features {
    list-style: none;
    margin-bottom: var(--spacing-lg);
}

.course-card-features li {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    padding: var(--spacing-xs) 0;
}

.course-card-features li::before {
    content: '✓';
    color: var(--primary);
    font-weight: 700;
}

/* Carousel Navigation */
.carousel-nav {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-md);
    margin-top: var(--spacing-xl);
}

.carousel-nav-btn {
    width: 44px;
    height: 44px;
    background: var(--bg-primary);
    border: 2px solid var(--border-light);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--transition-base);
    color: var(--text-secondary);
}

.carousel-nav-btn:hover {
    border-color: var(--primary);
    color: var(--primary);
}

.carousel-nav-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.carousel-dots {
    display: flex;
    gap: var(--spacing-sm);
}

.carousel-dot {
    width: 8px;
    height: 8px;
    background: var(--border-medium);
    border: none;
    border-radius: var(--radius-full);
    cursor: pointer;
    transition: all var(--transition-base);
    padding: 0;
}

.carousel-dot:hover {
    background: var(--text-muted);
}

.carousel-dot.active {
    width: 24px;
    background: var(--primary);
}

/* ========================================
   TESTIMONIAL SLIDER
======================================== */
.testimonial-slider {
    position: relative;
    overflow: hidden;
    padding: var(--spacing-xl) 0;
}

.testimonial-track {
    display: flex;
    transition: transform 500ms ease;
}

.testimonial-slide {
    flex: 0 0 100%;
    padding: 0 var(--spacing-lg);
}

.testimonial-card {
    background: var(--bg-primary);
    border-radius: var(--radius-2xl);
    padding: var(--spacing-2xl);
    box-shadow: var(--shadow-lg);
    max-width: 700px;
    margin: 0 auto;
    text-align: center;
}

.testimonial-quote {
    font-size: var(--font-size-xl);
    color: var(--text-secondary);
    line-height: var(--line-height-relaxed);
    margin-bottom: var(--spacing-xl);
    position: relative;
}

.testimonial-quote::before {
    content: '"';
    position: absolute;
    top: -20px;
    left: 50%;
    transform: translateX(-50%);
    font-size: 80px;
    color: var(--primary);
    opacity: 0.2;
    font-family: Georgia, serif;
    line-height: 1;
}

.testimonial-author {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-md);
}

.testimonial-avatar {
    width: 56px;
    height: 56px;
    border-radius: var(--radius-full);
    overflow: hidden;
    border: 3px solid var(--primary);
}

.testimonial-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.testimonial-info {
    text-align: left;
}

.testimonial-name {
    font-size: var(--font-size-base);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
}

.testimonial-role {
    font-size: var(--font-size-sm);
    color: var(--text-muted);
}

.testimonial-rating {
    display: flex;
    gap: 2px;
    margin-bottom: var(--spacing-md);
    justify-content: center;
}

.testimonial-rating .star {
    color: #fbbf24;
    font-size: 20px;
}

/* ========================================
   IMAGE GALLERY SLIDER
======================================== */
.gallery-slider {
    position: relative;
    overflow: hidden;
}

.gallery-track {
    display: flex;
    transition: transform 500ms ease;
}

.gallery-slide {
    flex: 0 0 100%;
    padding: 0 var(--spacing-sm);
}

.gallery-image {
    border-radius: var(--radius-xl);
    overflow: hidden;
    aspect-ratio: 16/9;
}

.gallery-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.gallery-caption {
    text-align: center;
    padding: var(--spacing-md);
    font-size: var(--font-size-sm);
    color: var(--text-muted);
}

/* ========================================
   RESPONSIVE
======================================== */
@media (min-width: 640px) {
    .slide-title {
        font-size: var(--font-size-5xl);
    }

    .slide-cta {
        flex-direction: row;
        justify-content: center;
    }

    .course-carousel-item {
        flex: 0 0 calc(50% - var(--spacing-md));
    }
}

@media (min-width: 768px) {
    .slider-nav {
        display: block;
    }

    .slide-content .container {
        max-width: 800px;
    }
}

@media (min-width: 1024px) {
    .slide-title {
        font-size: var(--font-size-6xl);
    }

    .course-carousel-item {
        flex: 0 0 calc(33.333% - var(--spacing-md));
    }
}

@media (max-width: 767px) {
    .slider-nav {
        display: none;
    }

    .slider-pagination {
        bottom: var(--spacing-lg);
    }

    .scroll-indicator {
        display: none;
    }

    .slide-decoration {
        display: none;
    }
}