* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #4a90e2;
    --secondary-color: #2c3e50;
    --accent-color: #3498db;
    --text-color: #333;
    --text-light: #666;
    --bg-light: #f8f9fa;
    --white: #ffffff;
    --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 30px rgba(0, 0, 0, 0.15);
}

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

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

/* Navigation Bar */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow);
    z-index: 1000;
    padding: 15px 0;
}

.nav-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--secondary-color);
    text-decoration: none;
}

.logo-icon {
    width: 40px;
    height: 40px;
    object-fit: contain;
}

.logo-text {
    color: var(--secondary-color);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 30px;
    align-items: center;
}

.nav-menu a {
    color: var(--text-color);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
    position: relative;
}

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

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-color);
    transition: width 0.3s ease;
}

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

/* Hero Section */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, #679ac9 0%, #86909c 100%);
    overflow: hidden;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url('../images/background.png');
    background-size: cover;
    background-position: center;
    opacity: 0.1;
    z-index: 0;
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    padding: 120px 0 80px;
    max-width: 800px;
    margin: 0 auto;
}

.hero-text {
    color: var(--white);
}

.hero-title {
    font-size: 4rem;
    font-weight: 700;
    margin-bottom: 20px;
    line-height: 1.2;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.2);
}

.hero-subtitle {
    font-size: 1.5rem;
    margin-bottom: 20px;
    font-weight: 300;
    opacity: 0.95;
}

.hero-description {
    font-size: 1.1rem;
    margin-bottom: 40px;
    opacity: 0.9;
    line-height: 1.8;
}

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

/* Buttons */
.btn {
    display: inline-block;
    padding: 14px 32px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    font-size: 1rem;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
}

.btn-primary {
    background: var(--white);
    color: var(--primary-color);
    box-shadow: var(--shadow);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-secondary {
    background: transparent;
    color: var(--white);
    border: 2px solid var(--white);
}

.btn-secondary:hover {
    background: var(--white);
    color: var(--primary-color);
}

.btn-download {
    padding: 16px 40px;
    font-size: 1.1rem;
}

.btn-apple {
    background: #000;
    color: var(--white);
}

.btn-apple:hover {
    background: #333;
    transform: translateY(-2px);
}

.btn-android {
    background: #3ddc84;
    color: #000;
}

.btn-android:hover {
    background: #2bc470;
    transform: translateY(-2px);
}

/* Section Styles */
section {
    padding: 100px 0;
}

.section-title {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 60px;
    color: var(--secondary-color);
    font-weight: 700;
}

/* Features Section */
.features {
    background: var(--bg-light);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 40px;
    max-width: 1000px;
    margin: 0 auto;
}

.feature-card {
    background: var(--white);
    padding: 50px 40px;
    border-radius: 15px;
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
    border: 2px solid transparent;
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-color);
}

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

.feature-title {
    font-size: 1.5rem;
    margin-bottom: 20px;
    color: var(--secondary-color);
    font-weight: 600;
    text-align: center;
}

.feature-list {
    list-style: none;
    font-size: 1rem;
    line-height: 1.8;
}

.feature-list li {
    margin-bottom: 12px;
    padding-left: 25px;
    position: relative;
    color: var(--text-light);
}

.feature-list li:before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--primary-color);
    font-weight: bold;
    font-size: 1.2rem;
}

/* Gallery Section */
.gallery {
    background: var(--white);
}

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 20px;
}

.gallery-item {
    overflow: hidden;
    border-radius: 15px;
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
    aspect-ratio: 9/16;
}

.gallery-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

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

/* Why Choose Section */
.why-choose {
    background: var(--white);
}

.benefits-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
}

.benefit-card {
    text-align: center;
    padding: 40px 30px;
    border-radius: 15px;
    background: var(--bg-light);
    transition: all 0.3s ease;
    border: 2px solid transparent;
}

.benefit-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-color);
}

.benefit-icon {
    font-size: 3.5rem;
    margin-bottom: 20px;
}

.benefit-title {
    font-size: 1.5rem;
    margin-bottom: 15px;
    color: var(--secondary-color);
    font-weight: 600;
}

.benefit-text {
    font-size: 1rem;
    color: var(--text-light);
    line-height: 1.8;
}

/* Download Section */
.download {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: var(--white);
    text-align: center;
}

.download .section-title {
    color: var(--white);
}

.download-text {
    font-size: 1.2rem;
    margin-bottom: 40px;
    opacity: 0.95;
}

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

/* Contact Section */
.contact {
    background: var(--bg-light);
    text-align: center;
}

.contact-text {
    font-size: 1.1rem;
    margin-bottom: 20px;
    color: var(--text-light);
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.contact-email {
    display: inline-block;
    font-size: 1.3rem;
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
}

.contact-email:hover {
    color: var(--accent-color);
    text-decoration: underline;
}

/* Footer */
.footer {
    background: var(--secondary-color);
    color: var(--white);
    text-align: center;
    padding: 30px 0;
}

.footer p {
    margin: 0;
    opacity: 0.8;
}

/* Responsive Design */
@media (max-width: 968px) {
    .nav-menu {
        gap: 20px;
        font-size: 0.9rem;
    }

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

    .hero-title {
        font-size: 3rem;
    }

    .hero-subtitle {
        font-size: 1.2rem;
    }

    .features-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 30px;
    }
    
    .feature-card {
        padding: 40px 30px;
    }

    .gallery-grid {
        grid-template-columns: repeat(3, 1fr);
    }

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

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

@media (max-width: 640px) {
    .nav-menu {
        gap: 15px;
        font-size: 0.85rem;
    }

    .logo-text {
        font-size: 1.2rem;
    }

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

    .hero-subtitle {
        font-size: 1.1rem;
    }

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

    .hero-buttons {
        flex-direction: column;
    }

    .btn {
        width: 100%;
        text-align: center;
    }

    section {
        padding: 60px 0;
    }

    .section-title {
        font-size: 1.8rem;
        margin-bottom: 40px;
    }

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

    .gallery-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 15px;
    }

    .feature-title {
        font-size: 1.3rem;
    }
}