/* Reset & Base */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

:root {
    --bg-primary: #0a0a0f;
    --bg-secondary: #12121a;
    --bg-card: #1a1a24;
    --bg-card-hover: #222230;
    --text-primary: #ffffff;
    --text-secondary: #a0a0b0;
    --text-muted: #6a6a7a;
    --accent-primary: #8b5cf6;
    --accent-secondary: #a78bfa;
    --accent-tertiary: #c4b5fd;
    --gradient-start: #8b5cf6;
    --gradient-mid: #ec4899;
    --gradient-end: #f97316;
    --border-color: #2a2a3a;
    --border-light: #3a3a4a;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

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

a {
    color: inherit;
    text-decoration: none;
}

/* Header & Navigation */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(10, 10, 15, 0.8);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-left {
    display: flex;
    align-items: center;
    gap: 3rem;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-weight: 700;
    font-size: 1.25rem;
}

.logo-icon {
    width: 28px;
    height: 28px;
    color: var(--accent-primary);
}

.logo-text {
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-mid));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-links {
    display: flex;
    gap: 2rem;
}

.nav-link {
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-weight: 500;
    transition: color 0.2s ease;
}

.nav-link:hover {
    color: var(--text-primary);
}

.nav-right {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.btn-login {
    padding: 0.5rem 1.25rem;
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-mid));
    border-radius: 8px;
    font-weight: 600;
    font-size: 0.9rem;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.btn-login:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(139, 92, 246, 0.4);
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 7rem 2rem 4rem;
    position: relative;
    overflow: hidden;
}

.hero-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    max-width: 1300px;
    width: 100%;
    align-items: center;
    z-index: 1;
}

.hero-content {
    text-align: left;
}

.hero-title {
    font-size: clamp(2rem, 4vw, 3.2rem);
    font-weight: 700;
    line-height: 1.25;
    margin-bottom: 1.5rem;
    letter-spacing: -0.02em;
}

.gradient-text {
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-mid), var(--gradient-end));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
    line-height: 1.8;
}

.hero-subtitle u {
    text-decoration-color: var(--accent-primary);
    text-underline-offset: 3px;
}

.btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem 2rem;
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-mid));
    border-radius: 12px;
    font-weight: 600;
    font-size: 1rem;
    transition: all 0.3s ease;
    box-shadow: 0 4px 20px rgba(139, 92, 246, 0.3);
}

.btn-gradient {
    background: linear-gradient(90deg, #ec4899, #8b5cf6, #06b6d4);
    background-size: 200% 100%;
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 30px rgba(139, 92, 246, 0.5);
}

.btn-icon {
    width: 20px;
    height: 20px;
}

/* Hero Image Comparison Slider */
.hero-slider {
    display: flex;
    justify-content: center;
    align-items: center;
}

.image-comparison {
    position: relative;
    width: 100%;
    max-width: 500px;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 25px 80px rgba(0, 0, 0, 0.5);
    cursor: ew-resize;
}

.comparison-wrapper {
    position: relative;
    width: 100%;
    aspect-ratio: 4/5;
}

.after-img,
.before-img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.after-img img,
.before-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.before-img {
    clip-path: inset(0 50% 0 0);
}

.img-label {
    position: absolute;
    padding: 0.5rem 1rem;
    border-radius: 8px;
    font-size: 0.85rem;
    font-weight: 600;
    background: rgba(255, 255, 255, 0.95);
    color: #1a1a24;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
}

.before-label-badge {
    top: 1rem;
    left: 1rem;
}

.after-label-badge {
    top: 1rem;
    right: 1rem;
}

.slider-handle {
    position: absolute;
    top: 0;
    left: 50%;
    width: 4px;
    height: 100%;
    transform: translateX(-50%);
    z-index: 10;
    cursor: ew-resize;
}

.slider-line {
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 3px;
    height: 100%;
    background: white;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.3);
}

.slider-button {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 44px;
    height: 44px;
    background: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 2px 15px rgba(0, 0, 0, 0.3);
    transition: transform 0.2s ease;
}

.slider-button:hover {
    transform: translate(-50%, -50%) scale(1.1);
}

.slider-button svg {
    width: 16px;
    height: 16px;
    color: #1a1a24;
}

/* Hero Glow Effect */
.hero-glow {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 0;
}

.glow-effect {
    position: absolute;
    top: 50%;
    left: 30%;
    transform: translate(-50%, -50%);
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(139, 92, 246, 0.12) 0%, rgba(236, 72, 153, 0.08) 40%, transparent 70%);
    filter: blur(60px);
    animation: pulse 8s ease-in-out infinite;
}

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

/* Showcase Section */
.showcase {
    padding: 6rem 2rem;
    background: var(--bg-secondary);
}

.showcase-header, .categories-header, .features-header, .social-header, .faq-header {
    text-align: center;
    margin-bottom: 4rem;
}

.showcase-header h2, .categories-header h2, .features-header h2, .social-header h2, .faq-header h2 {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 700;
    margin-bottom: 1rem;
}

.showcase-header p, .categories-header p, .features-header p, .social-header p {
    font-size: 1.1rem;
    color: var(--text-secondary);
}

.comparison-container {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 2rem;
    flex-wrap: wrap;
    max-width: 1000px;
    margin: 0 auto;
}

.comparison-card {
    position: relative;
    border-radius: 16px;
    overflow: hidden;
    border: 1px solid var(--border-color);
    background: var(--bg-card);
}

.comparison-card.enhanced {
    border-color: var(--accent-primary);
    box-shadow: 0 0 40px rgba(139, 92, 246, 0.2);
}

.comparison-label {
    position: absolute;
    top: 1rem;
    left: 1rem;
    padding: 0.5rem 1rem;
    border-radius: 8px;
    font-size: 0.85rem;
    font-weight: 600;
    z-index: 10;
}

.before-label {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
}

.after-label {
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-mid));
}

.comparison-image {
    width: 300px;
    height: 300px;
}

.comparison-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.placeholder-image {
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 1rem;
    background: linear-gradient(135deg, #1a1a24 0%, #2a2a34 100%);
    color: var(--text-muted);
    font-size: 1.1rem;
}

.enhanced-placeholder {
    background: linear-gradient(135deg, #1a1a2a 0%, #2a2a40 50%, #1a2a3a 100%);
    color: var(--text-secondary);
}

.resolution-tag {
    padding: 0.25rem 0.75rem;
    background: var(--bg-primary);
    border-radius: 6px;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-muted);
}

.comparison-arrow {
    width: 50px;
    height: 50px;
    display: flex;
    justify-content: center;
    align-items: center;
    background: var(--bg-card);
    border-radius: 50%;
    border: 1px solid var(--border-color);
}

.comparison-arrow svg {
    width: 24px;
    height: 24px;
    color: var(--accent-primary);
}

/* Categories Section */
.categories {
    padding: 6rem 2rem;
}

.categories-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
    max-width: 1200px;
    margin: 0 auto;
}

.category-card {
    padding: 2rem;
    background: var(--bg-card);
    border-radius: 16px;
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

.category-card:hover {
    transform: translateY(-5px);
    border-color: var(--accent-primary);
    box-shadow: 0 10px 40px rgba(139, 92, 246, 0.15);
}

.category-icon {
    width: 48px;
    height: 48px;
    display: flex;
    justify-content: center;
    align-items: center;
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-mid));
    border-radius: 12px;
    margin-bottom: 1.25rem;
}

.category-icon svg {
    width: 24px;
    height: 24px;
    color: white;
}

.category-card h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.category-card p {
    font-size: 0.95rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* Features Section */
.features {
    padding: 6rem 2rem;
    background: var(--bg-secondary);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    max-width: 1000px;
    margin: 0 auto;
}

.feature-card {
    text-align: center;
    padding: 2.5rem 2rem;
    background: var(--bg-card);
    border-radius: 16px;
    border: 1px solid var(--border-color);
}

.feature-number {
    font-size: 3rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-mid));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 1rem;
}

.feature-card h3 {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

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

/* Social Proof Section */
.social-proof {
    padding: 6rem 2rem;
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem;
    max-width: 1100px;
    margin: 0 auto;
}

.testimonial-card {
    padding: 2rem;
    background: var(--bg-card);
    border-radius: 16px;
    border: 1px solid var(--border-color);
}

.testimonial-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
}

.avatar {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-mid));
}

.user-info {
    display: flex;
    flex-direction: column;
}

.user-name {
    font-weight: 600;
    font-size: 1rem;
}

.user-handle {
    color: var(--text-muted);
    font-size: 0.85rem;
}

.testimonial-card > p {
    color: var(--text-secondary);
    font-size: 1rem;
    line-height: 1.7;
    font-style: italic;
}

/* FAQ Section */
.faq {
    padding: 6rem 2rem;
    background: var(--bg-secondary);
}

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

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

.faq-question {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem 0;
    cursor: pointer;
    font-weight: 600;
    font-size: 1.1rem;
    transition: color 0.2s ease;
}

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

.faq-icon {
    width: 24px;
    height: 24px;
    color: var(--text-muted);
    transition: transform 0.3s ease;
}

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

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease, padding 0.3s ease;
}

.faq-item.active .faq-answer {
    max-height: 200px;
    padding-bottom: 1.5rem;
}

.faq-answer p {
    color: var(--text-secondary);
    line-height: 1.7;
}

/* CTA Section */
.cta {
    padding: 8rem 2rem;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.cta::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 800px;
    height: 400px;
    background: radial-gradient(ellipse, rgba(139, 92, 246, 0.15) 0%, transparent 70%);
    filter: blur(60px);
}

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

.cta h2 {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 700;
    margin-bottom: 1rem;
}

.cta p {
    font-size: 1.2rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
}

.btn-large {
    padding: 1.25rem 2.5rem;
    font-size: 1.2rem;
}

/* Footer */
.footer {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    padding: 4rem 2rem 2rem;
}

.footer-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 3rem;
    max-width: 1200px;
    margin: 0 auto 3rem;
}

.footer-section h4 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 1.25rem;
    color: var(--text-primary);
}

.footer-section a {
    display: block;
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 0.75rem;
    transition: color 0.2s ease;
}

.footer-section a:hover {
    color: var(--accent-primary);
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid var(--border-color);
}

.footer-bottom p {
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* Responsive */
@media (max-width: 1024px) {
    .hero-container {
        grid-template-columns: 1fr;
        gap: 3rem;
        text-align: center;
    }

    .hero-content {
        text-align: center;
        order: 1;
    }

    .hero-slider {
        order: 2;
    }

    .hero-title {
        font-size: clamp(1.8rem, 5vw, 2.5rem);
    }

    .image-comparison {
        max-width: 400px;
    }
}

@media (max-width: 768px) {
    .nav-links, .nav-right .nav-link {
        display: none;
    }

    .hero {
        padding: 6rem 1.5rem 3rem;
    }

    .hero-subtitle {
        font-size: 1rem;
    }

    .btn-primary {
        padding: 0.875rem 1.5rem;
        font-size: 0.95rem;
    }

    .image-comparison {
        max-width: 320px;
    }

    .comparison-container {
        flex-direction: column;
    }

    .comparison-arrow {
        transform: rotate(90deg);
    }

    .categories-grid {
        grid-template-columns: 1fr;
    }
}