/* 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: #333;
    background-color: #ffffff;
}

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

/* Header Styles */
.header {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
}

.navbar {
    padding: 1rem 0;
}

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

.nav-logo {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo {
    width: 40px;
    height: 40px;
    border-radius: 50%;
}

.logo-text {
    font-size: 24px;
    font-weight: 800;
    color: #2D5B7B;
    letter-spacing: 2px;
}

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

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

.nav-link:hover {
    color: #2D5B7B;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: #2D5B7B;
    transition: width 0.3s ease;
}

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

/* Hero Section */
.hero {
    padding: 120px 0 80px;
    background: linear-gradient(135deg, #f8fbff 0%, #f0f8ff 50%, #ffffff 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
}

.hero-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 1.5rem;
    color: #1a1a1a;
}

.highlight {
    color: #2D5B7B;
    background: linear-gradient(135deg, #2D5B7B, #4A90A4);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-description {
    font-size: 1.2rem;
    color: #666;
    margin-bottom: 2.5rem;
    line-height: 1.7;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 15px 30px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    font-size: 1rem;
    transition: all 0.3s ease;
    border: 2px solid transparent;
}

.btn-primary {
    background: linear-gradient(135deg, #2D5B7B, #4A90A4);
    color: white;
    box-shadow: 0 8px 25px rgba(45, 91, 123, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 35px rgba(45, 91, 123, 0.4);
}

.btn-secondary {
    background: transparent;
    color: #2D5B7B;
    border-color: #2D5B7B;
}

.btn-secondary:hover {
    background: #2D5B7B;
    color: white;
    transform: translateY(-2px);
}

.btn-icon {
    font-size: 20px;
    display: inline-block;
}

.hero-image {
    display: flex;
    justify-content: center;
    align-items: center;
}

.app-preview {
    width: 300px;
    height: 300px;
    border-radius: 20px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
}

.app-preview:hover {
    transform: scale(1.05);
}

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

.section-title {
    text-align: center;
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 3rem;
    color: #1a1a1a;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.feature-card {
    background: #ffffff;
    padding: 2rem;
    border-radius: 20px;
    text-align: center;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
    border: 1px solid rgba(0, 0, 0, 0.05);
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.15);
}

.feature-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.feature-title {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: #1a1a1a;
}

.feature-description {
    color: #666;
    line-height: 1.6;
}

/* About Section */
.about {
    padding: 80px 0;
    background: linear-gradient(135deg, #f8fbff 0%, #f0f8ff 100%);
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.about-text {
    order: 1;
}

.about-description {
    font-size: 1.1rem;
    color: #666;
    margin-bottom: 1.5rem;
    line-height: 1.7;
}

.about-image {
    order: 2;
    display: flex;
    justify-content: center;
}

.about-img {
    width: 250px;
    height: 250px;
    border-radius: 20px;
    box-shadow: 0 15px 45px rgba(0, 0, 0, 0.1);
}

/* Technology Section */
.technology {
    padding: 80px 0;
    background: linear-gradient(135deg, #f8fbff 0%, #f0f8ff 100%);
}

.technology-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.tech-card {
    background: #ffffff;
    padding: 2.5rem;
    border-radius: 20px;
    text-align: center;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
    border: 1px solid rgba(0, 0, 0, 0.05);
}

.tech-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.15);
}

.tech-icon {
    font-size: 3.5rem;
    margin-bottom: 1.5rem;
}

.tech-card h3 {
    font-size: 1.4rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: #1a1a1a;
}

.tech-card p {
    color: #666;
    line-height: 1.6;
    font-size: 1rem;
}

/* Download Section */
.download {
    padding: 80px 0;
    background: #ffffff;
    text-align: center;
}

.download-description {
    font-size: 1.2rem;
    color: #666;
    margin-bottom: 3rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.download-buttons {
    display: flex;
    justify-content: center;
    gap: 2rem;
    margin-bottom: 2rem;
    flex-wrap: wrap;
}

.download-btn {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 20px 30px;
    background: #ffffff;
    border: 2px solid #e0e0e0;
    border-radius: 15px;
    text-decoration: none;
    color: #333;
    transition: all 0.3s ease;
    min-width: 200px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
}

.download-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.15);
    border-color: #2D5B7B;
}

.download-icon {
    width: 32px;
    height: 32px;
    object-fit: contain;
}

.download-text {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.download-label {
    font-size: 0.9rem;
    color: #999;
    font-weight: 500;
}

.download-platform {
    font-size: 1.1rem;
    font-weight: 600;
    color: #333;
}

.download-note {
    color: #999;
    font-size: 0.9rem;
    font-style: italic;
}

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

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-section h4 {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    color: #ffffff;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 1rem;
}

.footer-logo-img {
    width: 35px;
    height: 35px;
    border-radius: 50%;
}

.footer-logo-text {
    font-size: 20px;
    font-weight: 700;
    color: #ffffff;
    letter-spacing: 1px;
}

.footer-description {
    color: #ccc;
    line-height: 1.6;
    margin-bottom: 1.5rem;
}

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

.footer-links li {
    margin-bottom: 0.8rem;
}

.footer-links a {
    color: #ccc;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-links a:hover {
    color: #4A90A4;
}

.footer-bottom {
    border-top: 1px solid #333;
    padding-top: 2rem;
    text-align: center;
}

.footer-copyright {
    color: #999;
    font-size: 0.9rem;
}

/* Responsive Design */
@media (max-width: 768px) {
    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 2rem;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .about-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .about-text {
        order: 2;
    }
    
    .about-image {
        order: 1;
    }
    
    .nav-links {
        display: none;
    }
    
    .download-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .features-grid,
    .technology-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-description {
        font-size: 1rem;
    }
    
    .btn {
        padding: 12px 24px;
        font-size: 0.9rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
}

/* Smooth animations */
.feature-card,
.download-btn,
.btn {
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Focus states for accessibility */
.btn:focus,
.download-btn:focus,
.nav-link:focus {
    outline: 2px solid #4A90A4;
    outline-offset: 2px;
}

/* Loading states */
.btn.loading {
    opacity: 0.7;
    pointer-events: none;
}

/* Hover effects */
.feature-card:hover {
    border-color: #2D5B7B;
}

.download-btn:hover {
    background: #f8f9fa;
}