/**
 * Seedance Landing Page Styles
 * KingSeedance - Tạo Video AI Miễn Phí
 * Aidex.vn
 */

/* ==================== HERO SECTION ==================== */
.seedance-hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: var(--space-24) 0;
    overflow: hidden;
}

.seedance-hero .container {
    position: relative;
    z-index: 2;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-12);
    align-items: center;
}

.seedance-vanta-bg {
    position: absolute;
    inset: 0;
    z-index: 0;
}

/* Hero Badge */
.seedance-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-4);
    background: rgba(0, 105, 255, 0.1);
    border: 1px solid rgba(0, 105, 255, 0.3);
    border-radius: var(--radius-full);
    color: var(--color-primary-400);
    font-size: var(--text-sm);
    font-weight: var(--font-semibold);
    margin-bottom: var(--space-6);
}

.seedance-badge svg {
    color: var(--color-accent-400);
}

/* Hero Title */
.seedance-hero-title {
    font-size: var(--text-6xl);
    font-weight: var(--font-bold);
    line-height: 1.1;
    margin-bottom: var(--space-6);
    color: var(--color-text-primary);
}

.seedance-gradient-text {
    display: block;
    background: linear-gradient(135deg, var(--color-primary-400), var(--color-secondary-400), var(--color-accent-400));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Hero Subtitle */
.seedance-hero-subtitle {
    font-size: var(--text-xl);
    color: var(--color-text-secondary);
    line-height: 1.7;
    margin-bottom: var(--space-8);
    max-width: 540px;
}

/* Hero Actions */
.seedance-hero-actions {
    display: flex;
    gap: var(--space-4);
    margin-bottom: var(--space-10);
}

/* Hero Stats */
.seedance-hero-stats {
    display: flex;
    align-items: center;
    gap: var(--space-6);
}

.seedance-stat {
    display: flex;
    flex-direction: column;
}

.seedance-stat-number {
    font-size: var(--text-2xl);
    font-weight: var(--font-bold);
    color: var(--color-text-primary);
}

.seedance-stat-label {
    font-size: var(--text-sm);
    color: var(--color-text-tertiary);
}

.seedance-stat-divider {
    width: 1px;
    height: 40px;
    background: var(--color-border-primary);
}

/* Hero Visual - Phone Mockup */
.seedance-hero-visual {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
}

.seedance-phone-mockup {
    position: relative;
}

.seedance-phone-frame {
    width: 300px;
    height: 600px;
    background: linear-gradient(145deg, #1e2542, #0f1629);
    border-radius: 40px;
    padding: 12px;
    box-shadow: 
        0 0 0 2px rgba(255, 255, 255, 0.1),
        0 25px 50px -12px rgba(0, 0, 0, 0.5),
        0 0 100px rgba(0, 105, 255, 0.2);
}

.seedance-phone-screen {
    width: 100%;
    height: 100%;
    background: var(--color-bg-primary);
    border-radius: 32px;
    overflow: hidden;
}

/* App Preview */
.seedance-app-preview {
    height: 100%;
    display: flex;
    flex-direction: column;
}

.seedance-preview-header {
    padding: var(--space-4);
    background: var(--color-bg-secondary);
    border-bottom: 1px solid var(--color-border-primary);
}

.seedance-preview-logo {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-weight: var(--font-semibold);
    color: var(--color-text-primary);
}

.seedance-preview-content {
    flex: 1;
    padding: var(--space-4);
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
}

.seedance-preview-prompt {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}

.prompt-label {
    font-size: var(--text-xs);
    color: var(--color-text-tertiary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.prompt-box {
    padding: var(--space-3);
    background: var(--color-bg-tertiary);
    border: 1px solid var(--color-border-primary);
    border-radius: var(--radius-lg);
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
    font-style: italic;
}

.seedance-preview-video {
    flex: 1;
}

.video-thumbnail {
    width: 100%;
    height: 200px;
    background: linear-gradient(135deg, var(--color-primary-600), var(--color-secondary-600));
    border-radius: var(--radius-xl);
    display: flex;
    align-items: center;
    justify-content: center;
}

.play-overlay {
    width: 64px;
    height: 64px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    backdrop-filter: blur(10px);
}

/* Floating Badges */
.seedance-float-badge {
    position: absolute;
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-4);
    background: var(--color-bg-elevated);
    border: 1px solid var(--color-border-primary);
    border-radius: var(--radius-xl);
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
    color: var(--color-text-primary);
    box-shadow: var(--shadow-lg);
    animation: float 3s ease-in-out infinite;
}

.seedance-float-badge svg {
    color: var(--color-success);
}

.seedance-float-1 {
    top: 20%;
    right: -20px;
    animation-delay: 0s;
}

.seedance-float-2 {
    bottom: 30%;
    left: -30px;
    animation-delay: 1.5s;
}

@keyframes float {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-15px);
    }
}

/* ==================== FEATURES SECTION ==================== */
.seedance-features {
    background: var(--color-bg-primary);
}

.seedance-features-grid {
    margin-top: var(--space-12);
}

.seedance-feature-card {
    background: var(--color-bg-tertiary);
    border: 1px solid var(--color-border-primary);
    border-radius: var(--radius-2xl);
    padding: var(--space-8);
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.seedance-feature-card::before {
    content: '';
    position: absolute;
    inset: -1px;
    background: linear-gradient(135deg, var(--color-primary-500), var(--color-secondary-500));
    border-radius: inherit;
    opacity: 0;
    transition: opacity var(--transition-base);
    z-index: -1;
    filter: blur(20px);
}

.seedance-feature-card:hover {
    border-color: var(--color-border-accent);
    transform: translateY(-4px);
    box-shadow: var(--shadow-glow);
}

.seedance-feature-card:hover::before {
    opacity: 0.15;
}

.seedance-feature-icon {
    width: 64px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 105, 255, 0.1);
    border-radius: var(--radius-xl);
    margin-bottom: var(--space-6);
    color: var(--color-primary-400);
}

.seedance-feature-icon-accent {
    background: rgba(0, 212, 232, 0.1);
    color: var(--color-accent-400);
}

.seedance-feature-card h3 {
    font-size: var(--text-xl);
    font-weight: var(--font-semibold);
    margin-bottom: var(--space-3);
    color: var(--color-text-primary);
}

.seedance-feature-card p {
    font-size: var(--text-base);
    color: var(--color-text-secondary);
    line-height: 1.6;
    margin-bottom: 0;
}

/* ==================== HOW IT WORKS SECTION ==================== */
.seedance-how {
    background: var(--color-bg-secondary);
}

.seedance-steps {
    display: flex;
    align-items: flex-start;
    justify-content: center;
    gap: var(--space-4);
    margin-top: var(--space-12);
}

.seedance-step {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    max-width: 280px;
}

.seedance-step-number {
    font-size: var(--text-5xl);
    font-weight: var(--font-black);
    background: linear-gradient(135deg, var(--color-primary-400), var(--color-secondary-400));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: var(--space-4);
}

.seedance-step-icon {
    width: 100px;
    height: 100px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-bg-tertiary);
    border: 2px solid var(--color-border-accent);
    border-radius: 50%;
    margin-bottom: var(--space-6);
    color: var(--color-primary-400);
    transition: all var(--transition-base);
}

.seedance-step:hover .seedance-step-icon {
    background: rgba(0, 105, 255, 0.1);
    transform: scale(1.1);
}

.seedance-step-content h3 {
    font-size: var(--text-2xl);
    font-weight: var(--font-bold);
    margin-bottom: var(--space-3);
    color: var(--color-text-primary);
}

.seedance-step-content p {
    font-size: var(--text-base);
    color: var(--color-text-secondary);
    line-height: 1.6;
    margin-bottom: 0;
}

.seedance-step-connector {
    display: flex;
    align-items: center;
    padding-top: 50px;
}

/* ==================== GALLERY SECTION ==================== */
.seedance-gallery {
    background: var(--color-bg-primary);
}

.seedance-gallery-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-6);
    margin-top: var(--space-12);
}

.seedance-video-card {
    background: var(--color-bg-tertiary);
    border: 1px solid var(--color-border-primary);
    border-radius: var(--radius-2xl);
    overflow: hidden;
    transition: all var(--transition-base);
}

.seedance-video-card:hover {
    border-color: var(--color-border-accent);
    transform: translateY(-4px);
    box-shadow: var(--shadow-glow);
}

.seedance-video-thumbnail {
    position: relative;
    height: 200px;
    background: linear-gradient(135deg, var(--color-primary-600), var(--color-secondary-600));
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
}

.seedance-video-thumbnail.video-2 {
    background: linear-gradient(135deg, #667eea, #764ba2);
}

.seedance-video-thumbnail.video-3 {
    background: linear-gradient(135deg, #f093fb, #f5576c);
}

.seedance-video-thumbnail.video-4 {
    background: linear-gradient(135deg, #4facfe, #00f2fe);
}

.seedance-video-thumbnail.video-5 {
    background: linear-gradient(135deg, #43e97b, #38f9d7);
}

.seedance-video-thumbnail.video-6 {
    background: linear-gradient(135deg, #fa709a, #fee140);
}

.seedance-video-overlay {
    width: 80px;
    height: 80px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    backdrop-filter: blur(5px);
    transition: all var(--transition-base);
    opacity: 0.7;
}

.seedance-video-card:hover .seedance-video-overlay {
    opacity: 1;
    transform: scale(1.1);
}

.seedance-video-duration {
    position: absolute;
    bottom: var(--space-3);
    right: var(--space-3);
    padding: var(--space-1) var(--space-2);
    background: rgba(0, 0, 0, 0.7);
    border-radius: var(--radius-sm);
    font-size: var(--text-xs);
    font-weight: var(--font-medium);
    color: white;
}

.seedance-video-info {
    padding: var(--space-5);
}

.seedance-video-info h4 {
    font-size: var(--text-lg);
    font-weight: var(--font-semibold);
    margin-bottom: var(--space-2);
    color: var(--color-text-primary);
}

.seedance-video-info p {
    font-size: var(--text-sm);
    color: var(--color-text-tertiary);
    margin-bottom: 0;
}

/* ==================== USE CASES SECTION ==================== */
.seedance-usecases {
    background: var(--color-bg-secondary);
}

.seedance-usecases-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-6);
    margin-top: var(--space-12);
}

.seedance-usecase-card {
    background: var(--color-bg-tertiary);
    border: 1px solid var(--color-border-primary);
    border-radius: var(--radius-2xl);
    padding: var(--space-8);
    text-align: center;
    transition: all var(--transition-base);
}

.seedance-usecase-card:hover {
    border-color: var(--color-border-accent);
    transform: translateY(-4px);
    box-shadow: var(--shadow-glow);
}

.seedance-usecase-icon {
    width: 80px;
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--color-primary-500), var(--color-secondary-500));
    border-radius: 50%;
    margin: 0 auto var(--space-6);
    color: white;
}

.seedance-usecase-card h3 {
    font-size: var(--text-xl);
    font-weight: var(--font-semibold);
    margin-bottom: var(--space-3);
    color: var(--color-text-primary);
}

.seedance-usecase-card p {
    font-size: var(--text-base);
    color: var(--color-text-secondary);
    line-height: 1.6;
    margin-bottom: 0;
}

/* ==================== CTA SECTION ==================== */
.seedance-cta {
    padding: var(--space-24) 0;
    background: linear-gradient(135deg, var(--color-bg-secondary) 0%, var(--color-bg-primary) 100%);
    position: relative;
    overflow: hidden;
}

.seedance-cta::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 50% 50%, rgba(0, 105, 255, 0.1), transparent 70%);
    pointer-events: none;
}

.seedance-cta-content {
    position: relative;
    z-index: 1;
    text-align: center;
    max-width: 700px;
    margin: 0 auto;
}

.seedance-cta-icon {
    width: 120px;
    height: 120px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--color-primary-500), var(--color-secondary-500));
    border-radius: 50%;
    margin: 0 auto var(--space-8);
    color: white;
    animation: pulse 2s ease infinite;
}

@keyframes pulse {
    0%, 100% {
        box-shadow: 0 0 0 0 rgba(0, 105, 255, 0.4);
    }
    50% {
        box-shadow: 0 0 0 20px rgba(0, 105, 255, 0);
    }
}

.seedance-cta h2 {
    font-size: var(--text-4xl);
    font-weight: var(--font-bold);
    margin-bottom: var(--space-4);
    color: var(--color-text-primary);
}

.seedance-cta p {
    font-size: var(--text-xl);
    color: var(--color-text-secondary);
    margin-bottom: var(--space-8);
    line-height: 1.6;
}

.seedance-cta-actions {
    margin-bottom: var(--space-8);
}

.seedance-cta-features {
    display: flex;
    justify-content: center;
    gap: var(--space-8);
}

.seedance-cta-feature {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-size: var(--text-base);
    color: var(--color-text-secondary);
}

.seedance-cta-feature svg {
    color: var(--color-success);
}

/* ==================== FAQ SECTION ==================== */
.seedance-faq {
    background: var(--color-bg-primary);
}

.seedance-faq-list {
    max-width: 800px;
    margin: var(--space-12) auto 0;
}

.seedance-faq-item {
    border-bottom: 1px solid var(--color-border-primary);
}

.seedance-faq-question {
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-6) 0;
    background: transparent;
    border: none;
    cursor: pointer;
    text-align: left;
    font-size: var(--text-lg);
    font-weight: var(--font-semibold);
    color: var(--color-text-primary);
    transition: color var(--transition-base);
}

.seedance-faq-question:hover {
    color: var(--color-primary-400);
}

.seedance-faq-question span {
    flex: 1;
    padding-right: var(--space-4);
}

.faq-icon {
    flex-shrink: 0;
    transition: transform var(--transition-base);
}

.seedance-faq-item.active .faq-icon {
    transform: rotate(45deg);
}

.seedance-faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-slow), padding var(--transition-base);
}

.seedance-faq-item.active .seedance-faq-answer {
    max-height: 300px;
    padding-bottom: var(--space-6);
}

.seedance-faq-answer p {
    font-size: var(--text-base);
    color: var(--color-text-secondary);
    line-height: 1.7;
    margin-bottom: 0;
}

/* ==================== RESPONSIVE ==================== */
@media (max-width: 1024px) {
    .seedance-hero .container {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .seedance-hero-subtitle {
        margin-left: auto;
        margin-right: auto;
    }
    
    .seedance-hero-actions {
        justify-content: center;
    }
    
    .seedance-hero-stats {
        justify-content: center;
    }
    
    .seedance-hero-visual {
        display: none;
    }
    
    .seedance-features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .seedance-steps {
        flex-direction: column;
        align-items: center;
    }
    
    .seedance-step-connector {
        transform: rotate(90deg);
        padding: 0;
    }
    
    .seedance-gallery-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .seedance-usecases-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .seedance-hero-title {
        font-size: var(--text-4xl);
    }
    
    .seedance-hero-actions {
        flex-direction: column;
        gap: var(--space-3);
    }
    
    .seedance-hero-actions .btn {
        width: 100%;
    }
    
    .seedance-hero-stats {
        flex-wrap: wrap;
        gap: var(--space-4);
    }
    
    .seedance-stat-divider {
        display: none;
    }
    
    .seedance-stat {
        flex: 1 1 calc(33.333% - var(--space-4));
    }
    
    .seedance-features-grid {
        grid-template-columns: 1fr;
    }
    
    .seedance-gallery-grid {
        grid-template-columns: 1fr;
    }
    
    .seedance-usecases-grid {
        grid-template-columns: 1fr;
    }
    
    .seedance-cta h2 {
        font-size: var(--text-3xl);
    }
    
    .seedance-cta-features {
        flex-direction: column;
        gap: var(--space-4);
    }
    
    .seedance-faq-question {
        font-size: var(--text-base);
    }
}

@media (max-width: 480px) {
    .seedance-hero {
        padding: var(--space-16) 0;
    }
    
    .seedance-hero-title {
        font-size: var(--text-3xl);
    }
    
    .seedance-hero-subtitle {
        font-size: var(--text-base);
    }
    
    .seedance-step-icon {
        width: 80px;
        height: 80px;
    }
    
    .seedance-step-icon svg {
        width: 40px;
        height: 40px;
    }
    
    .seedance-usecase-icon {
        width: 64px;
        height: 64px;
    }
    
    .seedance-usecase-icon svg {
        width: 32px;
        height: 32px;
    }
}

/* ==================== UTILITIES ==================== */
.bg-dark {
    background: var(--color-bg-secondary) !important;
}

.section-badge {
    display: inline-block;
    padding: var(--space-2) var(--space-4);
    background: rgba(0, 105, 255, 0.1);
    border: 1px solid rgba(0, 105, 255, 0.2);
    border-radius: var(--radius-full);
    font-size: var(--text-sm);
    font-weight: var(--font-semibold);
    color: var(--color-primary-400);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--space-4);
}

.section-header {
    margin-bottom: var(--space-12);
}

.section-header.text-center {
    text-align: center;
}

.section-title {
    font-size: var(--text-4xl);
    font-weight: var(--font-bold);
    margin-bottom: var(--space-4);
    color: var(--color-text-primary);
}

.section-description {
    font-size: var(--text-lg);
    color: var(--color-text-secondary);
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.6;
}

.text-center .section-description {
    margin-left: auto;
    margin-right: auto;
}