* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary: #8B5CF6;
    --primary-dark: #7C3AED;
    --primary-light: #A78BFA;
    --secondary: #EC4899;
    --bg-dark: #0F0A1A;
    --bg-card: #1A1025;
    --bg-card-hover: #251535;
    --text: #F8FAFC;
    --text-muted: #94A3B8;
    --gradient: linear-gradient(135deg, #8B5CF6 0%, #EC4899 100%);
    --glow: 0 0 40px rgba(139, 92, 246, 0.3);
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg-dark);
    color: var(--text);
    line-height: 1.6;
    overflow-x: hidden;
}

.bg-animation {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    background: 
        radial-gradient(ellipse at 20% 20%, rgba(139, 92, 246, 0.15) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 80%, rgba(236, 72, 153, 0.1) 0%, transparent 50%),
        var(--bg-dark);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header */
header {
    padding: 20px 0;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(15, 10, 26, 0.8);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(139, 92, 246, 0.1);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.8rem;
    font-weight: 800;
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-decoration: none;
}

.nav-links {
    display: flex;
    gap: 30px;
    list-style: none;
}

.nav-links a {
    color: var(--text-muted);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s;
}

.nav-links a:hover {
    color: var(--primary-light);
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 28px;
    border-radius: 50px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s;
    cursor: pointer;
    border: none;
    font-size: 1rem;
}

.btn-primary {
    background: var(--gradient);
    color: white;
    box-shadow: var(--glow);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 0 60px rgba(139, 92, 246, 0.5);
}

.btn-outline {
    background: transparent;
    color: var(--primary-light);
    border: 2px solid var(--primary);
}

.btn-outline:hover {
    background: var(--primary);
    color: white;
}

.btn-large {
    padding: 16px 40px;
    font-size: 1.1rem;
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 120px 0 80px;
    position: relative;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.hero-text h1 {
    font-size: 3.5rem;
    font-weight: 900;
    line-height: 1.1;
    margin-bottom: 24px;
}

.hero-text h1 span {
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-text p {
    font-size: 1.25rem;
    color: var(--text-muted);
    margin-bottom: 32px;
    max-width: 500px;
}

.hero-buttons {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

.hero-stats {
    display: flex;
    gap: 40px;
    margin-top: 48px;
}

.stat {
    text-align: center;
}

.stat-value {
    font-size: 2rem;
    font-weight: 800;
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    font-size: 0.875rem;
    color: var(--text-muted);
}

/* Upload Section */
.upload-section {
    background: var(--bg-card);
    border-radius: 24px;
    padding: 40px;
    border: 1px solid rgba(139, 92, 246, 0.2);
    box-shadow: var(--glow);
}

.upload-area {
    border: 2px dashed rgba(139, 92, 246, 0.4);
    border-radius: 16px;
    padding: 60px 40px;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s;
    position: relative;
    overflow: hidden;
}

.upload-area:hover {
    border-color: var(--primary);
    background: rgba(139, 92, 246, 0.05);
}

.upload-area.dragover {
    border-color: var(--secondary);
    background: rgba(236, 72, 153, 0.1);
}

.upload-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 20px;
    background: var(--gradient);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.upload-icon svg {
    width: 40px;
    height: 40px;
    fill: white;
}

.upload-area h3 {
    font-size: 1.5rem;
    margin-bottom: 8px;
}

.upload-area p {
    color: var(--text-muted);
}

#fileInput {
    display: none;
}

/* Processing State */
.processing-state {
    display: none;
    text-align: center;
    padding: 40px;
}

.processing-state.active {
    display: block;
}

.upload-area.hidden {
    display: none;
}

.spinner {
    width: 80px;
    height: 80px;
    border: 4px solid rgba(139, 92, 246, 0.2);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 24px;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.progress-bar {
    width: 100%;
    height: 8px;
    background: rgba(139, 92, 246, 0.2);
    border-radius: 4px;
    overflow: hidden;
    margin: 24px 0;
}

.progress-fill {
    height: 100%;
    background: var(--gradient);
    border-radius: 4px;
    width: 0%;
    transition: width 0.3s;
}

.processing-text {
    color: var(--text-muted);
    margin-bottom: 8px;
}

.processing-percent {
    font-size: 2rem;
    font-weight: 700;
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Result State */
.result-state {
    display: none;
    text-align: center;
    padding: 40px;
}

.result-state.active {
    display: block;
}

.result-preview {
    position: relative;
    max-width: 400px;
    margin: 0 auto 24px;
    border-radius: 16px;
    overflow: hidden;
}

.result-preview img {
    width: 100%;
    filter: blur(40px);
    transform: scale(1.1);
}

.result-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(15, 10, 26, 0.7);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.result-overlay h3 {
    font-size: 1.5rem;
    margin-bottom: 8px;
}

.result-overlay p {
    color: var(--text-muted);
    margin-bottom: 20px;
}

.lock-icon {
    width: 60px;
    height: 60px;
    background: var(--gradient);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 16px;
}

.lock-icon svg {
    width: 30px;
    height: 30px;
    fill: white;
}

/* Features Section */
.features {
    padding: 100px 0;
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-header h2 {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 16px;
}

.section-header p {
    color: var(--text-muted);
    font-size: 1.125rem;
    max-width: 600px;
    margin: 0 auto;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.feature-card {
    background: var(--bg-card);
    border-radius: 20px;
    padding: 32px;
    border: 1px solid rgba(139, 92, 246, 0.1);
    transition: all 0.3s;
}

.feature-card:hover {
    transform: translateY(-8px);
    border-color: var(--primary);
    box-shadow: var(--glow);
}

.feature-icon {
    width: 60px;
    height: 60px;
    background: var(--gradient);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
    font-size: 1.5rem;
}

.feature-card h3 {
    font-size: 1.25rem;
    margin-bottom: 12px;
}

.feature-card p {
    color: var(--text-muted);
    font-size: 0.95rem;
}

/* How It Works */
.how-it-works {
    padding: 100px 0;
    background: linear-gradient(180deg, transparent 0%, rgba(139, 92, 246, 0.05) 50%, transparent 100%);
}

.steps {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
    margin-top: 60px;
}

.step {
    text-align: center;
    position: relative;
}

.step-number {
    width: 80px;
    height: 80px;
    background: var(--gradient);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    font-weight: 800;
    margin: 0 auto 24px;
}

.step h3 {
    font-size: 1.5rem;
    margin-bottom: 12px;
}

.step p {
    color: var(--text-muted);
}

/* Pricing */
.pricing {
    padding: 100px 0;
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.pricing-card {
    background: var(--bg-card);
    border-radius: 24px;
    padding: 40px;
    border: 1px solid rgba(139, 92, 246, 0.1);
    text-align: center;
    transition: all 0.3s;
}

.pricing-card.popular {
    border-color: var(--primary);
    transform: scale(1.05);
    box-shadow: var(--glow);
}

.pricing-card:hover {
    border-color: var(--primary);
}

.popular-badge {
    background: var(--gradient);
    color: white;
    padding: 6px 16px;
    border-radius: 20px;
    font-size: 0.875rem;
    font-weight: 600;
    display: inline-block;
    margin-bottom: 16px;
}

.pricing-card h3 {
    font-size: 1.5rem;
    margin-bottom: 8px;
}

.pricing-card .price {
    font-size: 3rem;
    font-weight: 800;
    margin: 16px 0;
}

.pricing-card .price span {
    font-size: 1rem;
    color: var(--text-muted);
}

.pricing-features {
    list-style: none;
    margin: 24px 0;
    text-align: left;
}

.pricing-features li {
    padding: 8px 0;
    color: var(--text-muted);
    display: flex;
    align-items: center;
    gap: 12px;
}

.pricing-features li::before {
    content: "✓";
    color: var(--primary);
    font-weight: bold;
}

/* FAQ */
.faq {
    padding: 100px 0;
}

.faq-list {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    background: var(--bg-card);
    border-radius: 16px;
    margin-bottom: 16px;
    border: 1px solid rgba(139, 92, 246, 0.1);
    overflow: hidden;
}

.faq-question {
    padding: 24px;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-weight: 600;
    font-size: 1.1rem;
}

.faq-question:hover {
    background: var(--bg-card-hover);
}

.faq-answer {
    padding: 0 24px 24px;
    color: var(--text-muted);
    display: none;
}

.faq-item.active .faq-answer {
    display: block;
}

.faq-icon {
    transition: transform 0.3s;
}

.faq-item.active .faq-icon {
    transform: rotate(180deg);
}

/* CTA Section */
.cta {
    padding: 100px 0;
    text-align: center;
}

.cta-box {
    background: var(--gradient);
    border-radius: 32px;
    padding: 80px 40px;
    position: relative;
    overflow: hidden;
}

.cta-box::before {
    content: "";
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, transparent 50%);
    animation: pulse 4s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); opacity: 0.5; }
    50% { transform: scale(1.1); opacity: 0.8; }
}

.cta-content {
    position: relative;
    z-index: 1;
}

.cta h2 {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 16px;
}

.cta p {
    font-size: 1.25rem;
    opacity: 0.9;
    margin-bottom: 32px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

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

.cta .btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 40px rgba(0,0,0,0.3);
}

/* Footer */
footer {
    padding: 60px 0 30px;
    border-top: 1px solid rgba(139, 92, 246, 0.1);
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 40px;
}

.footer-brand p {
    color: var(--text-muted);
    margin-top: 16px;
    max-width: 300px;
}

.footer-links h4 {
    margin-bottom: 20px;
    font-size: 1rem;
}

.footer-links ul {
    list-style: none;
}

.footer-links li {
    margin-bottom: 12px;
}

.footer-links a {
    color: var(--text-muted);
    text-decoration: none;
    transition: color 0.3s;
}

.footer-links a:hover {
    color: var(--primary-light);
}

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid rgba(139, 92, 246, 0.1);
    color: var(--text-muted);
    font-size: 0.875rem;
}

/* SEO Text Section */
.seo-content {
    padding: 80px 0;
    background: var(--bg-card);
}

.seo-content.alt {
    background: transparent;
}

.seo-content h2 {
    font-size: 2rem;
    margin-bottom: 24px;
    color: var(--text);
}

.seo-content h3 {
    font-size: 1.5rem;
    margin: 32px 0 16px;
    color: var(--primary-light);
}

.seo-content p {
    color: var(--text-muted);
    margin-bottom: 16px;
    line-height: 1.8;
}

.seo-content strong {
    color: var(--text);
}

.seo-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 40px;
    margin-top: 40px;
}

/* Responsive */
@media (max-width: 1024px) {
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .hero-text p {
        margin: 0 auto 32px;
    }
    
    .hero-buttons {
        justify-content: center;
    }
    
    .hero-stats {
        justify-content: center;
    }
    
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .pricing-grid {
        grid-template-columns: 1fr;
        max-width: 400px;
        margin: 0 auto;
    }
    
    .pricing-card.popular {
        transform: none;
    }
    
    .footer-content {
        grid-template-columns: 1fr 1fr;
    }
    
    .seo-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    
    .hero-text h1 {
        font-size: 2.5rem;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .steps {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .footer-brand p {
        margin: 16px auto 0;
    }
    
    .section-header h2 {
        font-size: 2rem;
    }
    
    .seo-content h2 {
        font-size: 1.5rem;
    }
    
    .seo-content h3 {
        font-size: 1.25rem;
    }
}