:root {
    --primary-color: #6f42c1;
    --primary-gradient: linear-gradient(135deg, #6f42c1 0%, #007bff 100%);
    --secondary-color: #6c757d;
    --success-color: #198754;
    --info-color: #0dcaf0;
    --warning-color: #ffc107;
    --danger-color: #dc3545;
    --light-color: #f8f9fa;
    --dark-color: #212529;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
}

.bg-gradient-primary {
    background: var(--primary-gradient);
}

.min-vh-75 {
    min-height: 75vh;
}

.hero-section {
    position: relative;
    overflow: hidden;
}

.hero-section::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>');
    z-index: 1;
}

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

.phone-mockup img {
    max-width: 300px;
    border-radius: 20px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
}

.feature-card {
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border: none;
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.15) !important;
}

.feature-icon {
    transition: transform 0.3s ease;
}

.feature-card:hover .feature-icon {
    transform: scale(1.1);
}

.screenshot-card {
    transition: transform 0.3s ease;
}

.screenshot-card:hover {
    transform: scale(1.05);
}

.screenshot-card img {
    border-radius: 15px;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
}

.btn {
    border-radius: 10px;
    transition: all 0.3s ease;
    font-weight: 600;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
}

.navbar-brand {
    font-size: 2rem;
}

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

.footer-links a:hover {
    color: white !important;
}

.form-control, .form-select {
    border-radius: 10px;
    border: 2px solid #e9ecef;
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.form-control:focus, .form-select:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(111, 66, 193, 0.25);
}

.privacy-accept-btn {
    position: fixed;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 1050;
    min-width: 200px;
    border-radius: 25px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.3);
}

@media (max-width: 768px) {
    .display-3 {
        font-size: 2.5rem;
    }
    
    .display-5 {
        font-size: 2rem;
    }
    
    .hero-section {
        padding: 3rem 0;
    }
    
    .phone-mockup img {
        max-width: 250px;
        margin-top: 2rem;
    }
    
    .feature-card {
        margin-bottom: 1rem;
    }
    
    .privacy-accept-btn {
        left: 20px;
        right: 20px;
        transform: none;
        width: auto;
    }
}

@media (max-width: 576px) {
    .btn-lg {
        padding: 0.75rem 1.5rem;
        font-size: 1rem;
    }
    
    .display-3 {
        font-size: 2rem;
    }
    
    .navbar-brand {
        font-size: 1.5rem;
    }
}

@media (orientation: portrait) and (max-width: 480px) {
    .hero-section {
        min-height: 100vh;
        display: flex;
        align-items: center;
    }
    
    .features-section .col-md-6 {
        margin-bottom: 1rem;
    }
}

@media (min-aspect-ratio: 3/1) {
    .hero-section {
        padding: 2rem 0;
    }
    
    .min-vh-75 {
        min-height: 60vh;
    }
}

.animate-on-scroll {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.animate-on-scroll.animate {
    opacity: 1;
    transform: translateY(0);
}