/* Reset and base styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: #ffffff;
    background-color: #111827;
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* Color variables */
:root {
    --primary: #3b82f6;
    --secondary: #8b5cf6;
    --dark: #111827;
    --gray-900: #1f2937;
    --gray-800: #374151;
    --gray-700: #4b5563;
    --gray-600: #6b7280;
    --gray-400: #9ca3af;
    --gray-300: #d1d5db;
    --white: #ffffff;
}

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

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
}

/* Buttons */
.btn-primary {
    display: inline-block;
    background: linear-gradient(45deg, var(--primary), var(--secondary));
    color: white;
    padding: 12px 24px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(59, 130, 246, 0.3);
}

.btn-large {
    padding: 16px 32px;
    font-size: 18px;
}

/* Header */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(17, 24, 39, 0.9);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(75, 85, 99, 0.3);
}

.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 24px;
    max-width: 1200px;
    margin: 0 auto;
}

.brand-text {
    font-size: 24px;
    font-weight: 800;
    color: var(--primary);
    text-decoration: none;
}

.nav-links {
    display: flex;
    gap: 32px;
    align-items: center;
}

.nav-link {
    color: white;
    text-decoration: none;
    font-weight: 600;
    transition: color 0.3s ease;
}

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

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    cursor: pointer;
    padding: 8px;
}

.mobile-menu-btn span {
    width: 25px;
    height: 3px;
    background: white;
    margin: 3px 0;
    transition: 0.3s;
}

.mobile-menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: 300px;
    height: 100vh;
    background: var(--dark);
    z-index: 1001;
    transition: right 0.3s ease;
    border-left: 1px solid var(--gray-700);
}

.mobile-menu.active {
    right: 0;
}

.mobile-menu-content {
    padding: 24px;
}

.mobile-menu-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 32px;
}

.mobile-menu-close {
    background: none;
    border: none;
    color: white;
    font-size: 32px;
    cursor: pointer;
}

.mobile-menu-links {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.mobile-nav-link {
    color: white;
    text-decoration: none;
    font-weight: 600;
    padding: 12px 0;
    border-bottom: 1px solid var(--gray-700);
    transition: color 0.3s ease;
}

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

.mobile-cta {
    background: linear-gradient(45deg, var(--primary), var(--secondary));
    padding: 16px;
    border-radius: 8px;
    text-align: center;
    border: none;
    margin-top: 16px;
}

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

.hero-bg {
    position: absolute;
    top: -200px;
    left: 50%;
    transform: translateX(-50%) rotate(30deg);
    width: 800px;
    height: 600px;
    background: linear-gradient(45deg, var(--primary), var(--secondary));
    opacity: 0.1;
    border-radius: 50%;
    filter: blur(100px);
    z-index: -1;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
    align-items: center;
}

.hero-title {
    font-size: 3.5rem;
    margin-bottom: 24px;
    font-weight: 800;
}

.hero-description {
    font-size: 1.25rem;
    color: var(--gray-300);
    margin-bottom: 40px;
    line-height: 1.7;
}

.hero-buttons {
    display: flex;
    gap: 24px;
    align-items: center;
    flex-wrap: wrap;
}

.learn-more-link {
    color: white;
    text-decoration: none;
    font-weight: 600;
    transition: color 0.3s ease;
}

.learn-more-link:hover {
    color: var(--primary);
}

.hero-image {
    text-align: center;
}

.hero-img {
    max-width: 100%;
    height: auto;
    border-radius: 24px;
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.3);
}

/* Stats Section */
.stats {
    padding: 80px 0;
    background: rgba(31, 41, 55, 0.5);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 32px;
    text-align: center;
}

.stat-item {
    padding: 32px 16px;
}

.stat-value {
    font-size: 3rem;
    font-weight: 800;
    color: white;
    margin-bottom: 8px;
}

.stat-name {
    color: var(--gray-300);
    font-size: 1rem;
}

/* About Section */
.about {
    padding: 100px 0;
}

.section-header {
    text-align: center;
    margin-bottom: 80px;
}

.section-subtitle {
    color: var(--primary);
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 16px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.section-title {
    font-size: 2.5rem;
    margin-bottom: 24px;
    color: white;
}

.section-description {
    font-size: 1.125rem;
    color: var(--gray-300);
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.7;
}

.about-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 48px;
}

.about-item {
    padding: 32px 24px;
}

.about-item-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
}

.about-icon {
    width: 24px;
    height: 24px;
    color: var(--primary);
}

.about-item h4 {
    color: white;
    font-size: 1.25rem;
}

.about-item p {
    color: var(--gray-300);
    line-height: 1.7;
}

/* Features Section */
.features {
    padding: 100px 0;
    background: rgba(31, 41, 55, 0.5);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 48px;
}

.feature-item {
    padding: 32px 24px;
}

.feature-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
}

.feature-icon {
    width: 24px;
    height: 24px;
    color: var(--primary);
}

.feature-item h4 {
    color: white;
    font-size: 1.25rem;
}

.feature-item p {
    color: var(--gray-300);
    line-height: 1.7;
}

/* Testimonials Section */
.testimonials {
    padding: 100px 0;
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.testimonial-item {
    background: rgba(31, 41, 55, 0.5);
    padding: 32px;
    border-radius: 16px;
    border: 1px solid var(--gray-800);
}

.testimonial-rating {
    margin-bottom: 16px;
}

.star {
    color: #fbbf24;
    font-size: 1.25rem;
}

.testimonial-item blockquote {
    color: var(--gray-300);
    font-size: 1rem;
    line-height: 1.7;
    margin-bottom: 24px;
    font-style: italic;
}

.author-name {
    color: white;
    font-weight: 600;
    margin-bottom: 4px;
}

.author-role {
    color: var(--gray-400);
    font-size: 0.875rem;
}

/* CTA Section */
.cta {
    position: relative;
    padding: 120px 0;
    text-align: center;
    overflow: hidden;
}

.cta-bg {
    position: absolute;
    top: 50%;
    right: -200px;
    transform: translateY(-50%);
    width: 800px;
    height: 600px;
    background: linear-gradient(45deg, var(--primary), var(--secondary));
    opacity: 0.1;
    border-radius: 50%;
    filter: blur(100px);
    z-index: -1;
}

.cta-title {
    font-size: 2.5rem;
    margin-bottom: 24px;
    color: white;
}

.cta-description {
    font-size: 1.125rem;
    color: var(--gray-300);
    max-width: 600px;
    margin: 0 auto 40px;
    line-height: 1.7;
}

.cta-buttons {
    display: flex;
    gap: 24px;
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
}

.advertiser-link {
    color: white;
    text-decoration: none;
    font-weight: 600;
    transition: color 0.3s ease;
}

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

/* Footer */
.footer {
    background: var(--gray-900);
    padding: 48px 0;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 24px;
}

.footer-links {
    display: flex;
    gap: 32px;
    align-items: center;
    flex-wrap: wrap;
}

.footer-link {
    color: var(--gray-400);
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-link:hover {
    color: var(--gray-300);
}

.social-link {
    color: var(--gray-400);
    transition: color 0.3s ease;
}

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

.footer-copyright {
    color: var(--gray-400);
    font-size: 0.875rem;
    text-align: center;
}

/* Animations */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(100px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.fade-in {
    animation: fadeIn 0.8s ease-out;
}

.fade-in-delay-1 {
    animation: fadeIn 0.8s ease-out 0.2s both;
}

.fade-in-delay-2 {
    animation: fadeIn 0.8s ease-out 0.4s both;
}

.slide-in-right {
    animation: slideInRight 0.8s ease-out 0.6s both;
}

.fade-in-up {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease-out;
}

.fade-in-up.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Mobile Responsive */
@media (max-width: 768px) {
    .nav-links,
    .nav-cta {
        display: none;
    }

    .mobile-menu-btn {
        display: flex;
    }

    .hero-content {
        grid-template-columns: 1fr;
        gap: 48px;
        text-align: center;
    }

    .hero-title {
        font-size: 2.5rem;
    }

    .hero-buttons {
        justify-content: center;
    }

    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 24px;
    }

    .about-grid,
    .features-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }

    .testimonials-grid {
        grid-template-columns: 1fr;
        gap: 24px;
    }

    .section-title {
        font-size: 2rem;
    }

    .cta-title {
        font-size: 2rem;
    }

    .cta-buttons {
        flex-direction: column;
        align-items: center;
    }

    .footer-content {
        flex-direction: column;
        text-align: center;
    }

    .footer-links {
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 16px;
    }

    .hero {
        padding: 100px 0 60px;
    }

    .hero-title {
        font-size: 2rem;
    }

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

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

    .stat-value {
        font-size: 2rem;
    }

    .section-title {
        font-size: 1.75rem;
    }

    .cta-title {
        font-size: 1.75rem;
    }

    .footer-links {
        flex-direction: column;
        gap: 16px;
    }
}

/* Smooth scrolling and performance improvements */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Loading optimization */
img {
    max-width: 100%;
    height: auto;
}

/* Accessibility improvements */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* Focus styles */
a:focus,
button:focus {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    .hero-bg,
    .cta-bg {
        display: none;
    }
    
    .btn-primary {
        border: 2px solid var(--primary);
    }
}