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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: #333;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
}

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

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
    z-index: 1000;
    transition: all 0.3s ease;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.nav-logo {
    display: flex;
    align-items: center;
    font-size: 1.5rem;
    font-weight: 700;
    color: #667eea;
}

.nav-logo i {
    margin-right: 10px;
    font-size: 1.8rem;
}

.nav-menu {
    display: flex;
    gap: 30px;
}

.nav-link {
    text-decoration: none;
    color: #333;
    font-weight: 500;
    transition: color 0.3s ease;
    position: relative;
}

.nav-link:hover {
    color: #667eea;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: #667eea;
    transition: width 0.3s ease;
}

.nav-link:hover::after {
    width: 100%;
}

/* Hero Section */
.hero {
    padding: 120px 0 80px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grain" width="100" height="100" patternUnits="userSpaceOnUse"><circle cx="50" cy="50" r="1" fill="white" opacity="0.1"/></pattern></defs><rect width="100" height="100" fill="url(%23grain)"/></svg>');
    opacity: 0.3;
}

.hero-container {
    position: relative;
    z-index: 2;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 20px;
    line-height: 1.2;
}

.gradient-text {
    background: linear-gradient(45deg, #ffd700, #ffed4e);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-description {
    font-size: 1.2rem;
    margin-bottom: 40px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    opacity: 0.9;
}

.hero-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
}

.btn {
    display: inline-flex;
    align-items: center;
    padding: 15px 30px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
    font-size: 1rem;
}

.btn i {
    margin-right: 8px;
}

.btn-primary {
    background: linear-gradient(45deg, #ffd700, #ffed4e);
    color: #333;
    box-shadow: 0 4px 15px rgba(255, 215, 0, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(255, 215, 0, 0.4);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.2);
    color: white;
    border: 2px solid rgba(255, 255, 255, 0.3);
    backdrop-filter: blur(10px);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: translateY(-2px);
}

/* Features Section */
.features {
    padding: 80px 0;
    background: white;
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 60px;
    color: #333;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.feature-card {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 40px 30px;
    border-radius: 20px;
    text-align: center;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(102, 126, 234, 0.15);
}

.feature-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, #ff6b6b, #ee5a24);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    color: white;
    font-size: 2rem;
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

.feature-card:nth-child(1) .feature-icon {
    background: linear-gradient(135deg, #ff6b6b, #ee5a24);
}

.feature-card:nth-child(2) .feature-icon {
    background: linear-gradient(135deg, #4ecdc4, #44a08d);
}

.feature-card:nth-child(3) .feature-icon {
    background: linear-gradient(135deg, #45b7d1, #96c93d);
}

.feature-card:nth-child(4) .feature-icon {
    background: linear-gradient(135deg, #f093fb, #f5576c);
}

.feature-card:nth-child(5) .feature-icon {
    background: linear-gradient(135deg, #4facfe, #00f2fe);
}

.feature-card:nth-child(6) .feature-icon {
    background: linear-gradient(135deg, #43e97b, #38f9d7);
}

.feature-card h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 15px;
    color: white;
}

.feature-card p {
    color: rgba(255, 255, 255, 0.9);
    line-height: 1.6;
}

/* Screenshot Section */
.screenshot-section {
    padding: 80px 0;
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
}

/* Image Showcase Styles */
.image-showcase {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
    max-width: 1200px;
    margin: 0 auto 40px auto;
}

.showcase-card {
    background: white;
    border-radius: 10px;
    padding: 15px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
}

.showcase-card:hover {
    transform: translateY(-5px);
}

.showcase-image {
    width: 100%;
    height: auto;
    border-radius: 8px;
    margin-bottom: 15px;
    display: block;
}

.showcase-title {
    margin: 0 0 10px 0;
    color: #333;
    font-size: 1.2rem;
    font-weight: 600;
}

.showcase-description {
    margin: 0;
    color: #666;
    font-size: 0.9rem;
    line-height: 1.4;
}

.screenshot-features {
    display: flex;
    justify-content: center;
    gap: 30px;
    flex-wrap: wrap;
}

.feature-highlight {
    display: flex;
    align-items: center;
    gap: 10px;
    color: #667eea;
    font-weight: 500;
}

.feature-highlight i {
    color: #4ade80;
}

/* Download Section */
.download-section {
    padding: 80px 0;
    background: white;
}

.security-notice-inline {
    background: #e3f2fd;
    border: 1px solid #bbdefb;
    border-radius: 8px;
    padding: 15px;
    margin: 20px 0;
    display: flex;
    align-items: flex-start;
    gap: 12px;
    color: #1565c0;
}

.security-notice-inline i {
    color: #1976d2;
    margin-top: 2px;
    font-size: 1.1rem;
}

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

.download-info h3 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 20px;
    color: #333;
}

.download-info p {
    font-size: 1.1rem;
    color: #666;
    margin-bottom: 30px;
    line-height: 1.6;
}

.download-features {
    list-style: none;
}

.download-features li {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 15px;
    color: #333;
    font-weight: 500;
}

.download-features i {
    color: #4ade80;
    font-size: 1.2rem;
}

.download-actions {
    display: flex;
    justify-content: center;
}

.download-card {
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: white;
    padding: 40px;
    border-radius: 20px;
    text-align: center;
    box-shadow: 0 20px 40px rgba(102, 126, 234, 0.3);
    transition: all 0.3s ease;
}

.download-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 25px 50px rgba(102, 126, 234, 0.4);
}

.download-icon {
    width: 80px;
    height: 80px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    font-size: 2.5rem;
}

.download-card h4 {
    font-size: 1.5rem;
    margin-bottom: 10px;
}

.download-card p {
    opacity: 0.9;
    margin-bottom: 30px;
}

.btn-download {
    background: linear-gradient(45deg, #ffd700, #ffed4e);
    color: #333;
    padding: 15px 30px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 10px;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(255, 215, 0, 0.3);
}

.btn-download:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(255, 215, 0, 0.4);
}

/* Footer */
.footer {
    background: #1a1a1a;
    color: white;
    padding: 60px 0 20px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-section h4 {
    font-size: 1.3rem;
    margin-bottom: 20px;
    color: #667eea;
}

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

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

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

.footer-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid #333;
    color: #999;
}

/* Responsive Design */
@media (max-width: 768px) {
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .download-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .screenshot-gallery {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .screenshot-wrapper {
        aspect-ratio: 16/9;
    }
    
    .screenshot-features {
        flex-direction: column;
        align-items: center;
    }
    
    .nav-menu {
        display: none;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .screenshot-gallery {
        gap: 15px;
    }
    
    .screenshot-wrapper {
        aspect-ratio: 4/3;
    }
    
    .screenshot-info h3 {
        font-size: 1rem;
    }
    
    .screenshot-info p {
        font-size: 0.8rem;
    }
}

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

.feature-card {
    animation: fadeInUp 0.6s ease forwards;
}

.feature-card:nth-child(1) { animation-delay: 0.1s; }
.feature-card:nth-child(2) { animation-delay: 0.2s; }
.feature-card:nth-child(3) { animation-delay: 0.3s; }
.feature-card:nth-child(4) { animation-delay: 0.4s; }
.feature-card:nth-child(5) { animation-delay: 0.5s; }
.feature-card:nth-child(6) { animation-delay: 0.6s; }

/* Gallery item animation rules removed */

/* Smooth scrolling */
html {
    scroll-behavior: smooth;
}

/* Download verification styles */
.hash-info {
    margin-top: 12px;
    font-size: 0.9rem;
    color: #6b7280; /* slate-500 */
}

.hash-code {
    display: block;
    word-break: break-all;
    background: #f3f4f6; /* gray-100 */
    color: #111827; /* gray-900 */
    padding: 8px;
    border-radius: 6px;
}

.checksum-link {
    color: #111827; /* gray-900 */
    background: #f3f4f6; /* gray-100 */
    border: 1px solid #e5e7eb; /* gray-200 */
    padding: 4px 8px;
    border-radius: 6px;
    text-decoration: none;
    display: inline-block;
    margin-left: 4px;
}

.verify-steps {
    margin-top: 10px;
    background: #eef2ff; /* indigo-50 */
    color: #111827; /* gray-900 */
    border: 1px solid #c7d2fe; /* indigo-200 */
    padding: 10px;
    border-radius: 8px;
}