/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', sans-serif;
    line-height: 1.6;
    color: #333;
    overflow-x: hidden;
}

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

/* Header */
.header {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
    z-index: 1000;
    transition: all 0.3s ease;
}

.header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 20px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo-icon {
    font-size: 24px;
    padding: 8px;
    background: linear-gradient(135deg, #4f46e5 0%, #7c3aed 100%);
    border-radius: 12px;
    color: white;
}

.logo h1 {
    font-size: 20px;
    font-weight: 700;
    background: linear-gradient(135deg, #4f46e5 0%, #7c3aed 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav {
    display: flex;
    align-items: center;
    gap: 30px;
}

.nav a {
    text-decoration: none;
    color: #555;
    font-weight: 500;
    transition: color 0.3s ease;
}

.nav a:hover {
    color: #4f46e5;
}

.cta-btn {
    background: linear-gradient(135deg, #4f46e5 0%, #7c3aed 100%);
    color: white !important;
    padding: 10px 20px;
    border-radius: 25px;
    text-decoration: none;
    font-weight: 600;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.cta-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(79, 70, 229, 0.3);
}

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    font-size: 24px;
    cursor: pointer;
}

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

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    opacity: 0.1;
    z-index: -1;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    padding: 120px 0 60px;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 20px;
    background: linear-gradient(135deg, #4f46e5 0%, #7c3aed 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.2rem;
    color: #666;
    margin-bottom: 40px;
    line-height: 1.7;
}

.hero-buttons {
    display: flex;
    gap: 20px;
    margin-bottom: 50px;
}

.install-btn {
    background: linear-gradient(135deg, #4f46e5 0%, #7c3aed 100%);
    color: white;
    border: none;
    padding: 15px 30px;
    border-radius: 30px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 10px;
    transition: all 0.3s ease;
}

.install-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 30px rgba(79, 70, 229, 0.4);
}

.demo-btn {
    background: white;
    color: #4f46e5;
    border: 2px solid #4f46e5;
    padding: 15px 30px;
    border-radius: 30px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 10px;
    transition: all 0.3s ease;
}

.demo-btn:hover {
    background: #4f46e5;
    color: white;
    transform: translateY(-3px);
}

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

.stat {
    text-align: center;
}

.stat strong {
    display: block;
    font-size: 1.5rem;
    font-weight: 800;
    color: #4f46e5;
}

.stat span {
    font-size: 0.9rem;
    color: #666;
}

/* Extension Mockup */
.extension-mockup {
    position: relative;
    perspective: 1000px;
}

.mockup-window {
    background: white;
    border-radius: 20px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.15);
    overflow: hidden;
    transform: rotateY(-5deg) rotateX(5deg);
    transition: transform 0.3s ease;
    max-width: 400px;
    margin: 0 auto;
}

.mockup-window:hover {
    transform: rotateY(0deg) rotateX(0deg);
}

.mockup-header {
    background: linear-gradient(135deg, #4f46e5 0%, #7c3aed 100%);
    color: white;
    padding: 15px 20px;
    display: flex;
    align-items: center;
    gap: 15px;
}

.mockup-controls {
    display: flex;
    gap: 8px;
}

.mockup-controls span {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
}

.mockup-title {
    font-weight: 600;
    font-size: 14px;
}

.mockup-content {
    padding: 20px;
    max-height: 400px;
    overflow-y: auto;
}

/* Features Section */
.features {
    padding: 100px 0;
    background: #f8fafc;
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 60px;
    color: #1e293b;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
}

.feature-card {
    background: white;
    padding: 40px 30px;
    border-radius: 20px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    text-align: center;
    transition: all 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

.feature-icon {
    font-size: 3rem;
    margin-bottom: 20px;
}

.feature-card h3 {
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 15px;
    color: #1e293b;
}

.feature-card p {
    color: #64748b;
    line-height: 1.6;
}

/* Preview Section */
.preview {
    padding: 100px 0;
}

.preview-content {
    max-width: 800px;
    margin: 0 auto;
}

.preview-tabs {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-bottom: 40px;
}

.tab-btn {
    background: white;
    color: #64748b;
    border: 2px solid #e2e8f0;
    padding: 12px 24px;
    border-radius: 25px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.tab-btn.active,
.tab-btn:hover {
    background: #4f46e5;
    color: white;
    border-color: #4f46e5;
}

.preview-demo {
    background: white;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    overflow: hidden;
}

.demo-controls {
    background: #f8fafc;
    padding: 20px;
    display: flex;
    align-items: center;
    gap: 15px;
    border-bottom: 1px solid #e2e8f0;
}

.demo-controls input {
    padding: 8px 12px;
    border: 1px solid #e2e8f0;
    border-radius: 8px;
    font-size: 14px;
}

.demo-controls button {
    background: white;
    border: 1px solid #e2e8f0;
    padding: 8px 12px;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.demo-controls button:hover {
    background: #4f46e5;
    color: white;
    border-color: #4f46e5;
}

.demo-content {
    padding: 30px;
    min-height: 300px;
}

/* CTA Section */
.cta-section {
    padding: 100px 0;
    background: linear-gradient(135deg, #4f46e5 0%, #7c3aed 100%);
    color: white;
    text-align: center;
}

.cta-content h2 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 20px;
}

.cta-content p {
    font-size: 1.2rem;
    margin-bottom: 40px;
    opacity: 0.9;
}

.install-btn.large {
    font-size: 18px;
    padding: 20px 40px;
    background: white;
    color: #4f46e5;
}

.install-btn.large:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.2);
}

.cta-note {
    margin-top: 20px !important;
    font-size: 0.9rem;
    opacity: 0.8;
}

/* Footer */
.footer {
    background: #1e293b;
    color: white;
    padding: 60px 0 30px;
}

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

.footer-section h3,
.footer-section h4 {
    margin-bottom: 20px;
    color: white;
}

.footer-section p {
    color: #94a3b8;
    line-height: 1.6;
}

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

.footer-section ul li {
    margin-bottom: 10px;
}

.footer-section ul li a {
    color: #94a3b8;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-section ul li a:hover {
    color: white;
}

.footer-bottom {
    border-top: 1px solid #334155;
    padding-top: 30px;
    text-align: center;
    color: #94a3b8;
}

/* Demo Styles */
.demo-event {
    background: #f8fafc;
    border: 1px solid #e2e8f0;
    border-radius: 12px;
    padding: 20px;
    margin-bottom: 15px;
    border-left: 4px solid #4f46e5;
    transition: all 0.3s ease;
}

.demo-event:hover {
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    transform: translateY(-2px);
}

.demo-date {
    font-size: 12px;
    color: #4f46e5;
    font-weight: 600;
    background: rgba(79, 70, 229, 0.1);
    padding: 4px 8px;
    border-radius: 6px;
    display: inline-block;
    margin-bottom: 10px;
}

.demo-title {
    font-weight: 600;
    color: #1e293b;
    margin-bottom: 8px;
    line-height: 1.4;
}

.demo-category {
    font-size: 11px;
    padding: 3px 8px;
    border-radius: 12px;
    font-weight: 500;
    display: inline-block;
}

.category-politics { background: rgba(220, 38, 38, 0.1); color: #dc2626; }
.category-technology { background: rgba(37, 99, 235, 0.1); color: #2563eb; }
.category-culture { background: rgba(124, 58, 237, 0.1); color: #7c3aed; }
.category-sports { background: rgba(5, 150, 105, 0.1); color: #059669; }

/* Loading Animation */
.loading {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 200px;
    flex-direction: column;
    gap: 15px;
}

.loading-book {
    width: 50px;
    height: 35px;
    position: relative;
}

.loading-page {
    position: absolute;
    width: 100%;
    height: 100%;
    background: #4f46e5;
    border-radius: 2px;
    animation: pageFlip 2s infinite ease-in-out;
}

.loading-page:nth-child(2) {
    background: #7c3aed;
    animation-delay: 0.2s;
}

.loading-page:nth-child(3) {
    background: #a855f7;
    animation-delay: 0.4s;
}

@keyframes pageFlip {
    0%, 100% { transform: rotateY(0deg); }
    50% { transform: rotateY(180deg); }
}

.loading-text {
    color: #64748b;
    font-size: 14px;
    font-weight: 500;
}

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

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

    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 40px;
    }

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

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

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

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

    .preview-tabs {
        flex-direction: column;
        align-items: center;
    }

    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

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

    .cta-content h2 {
        font-size: 2rem;
    }
}