/* Global Styles */
:root {
    --primary-color: #366998;
    --secondary-color: #4CAF50;
    --dark-color: #2C3E50;
    --light-color: #f4f4f4;
    --accent-color: #E74C3C;
    --google-play-color: #3DDC84;
}

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

/* Navigation */
.navbar {
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    transition: all 0.3s ease;
}

.navbar-brand {
    font-weight: bold;
    color: var(--primary-color) !important;
}

.navbar-brand img {
    margin-right: 8px;
}

/* Hero Section */
.hero-section {
    padding-top: 80px;
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('assets/pattern.png');
    opacity: 0.1;
    z-index: 0;
}

.hero-section .container {
    position: relative;
    z-index: 1;
}

.hero-section h1 {
    color: var(--dark-color);
    margin-bottom: 1.5rem;
    font-weight: 800;
}

.hero-section .lead {
    font-size: 1.25rem;
    margin-bottom: 2rem;
    color: #555;
}

/* Feature Cards */
.feature-card {
    padding: 2rem;
    text-align: center;
    background: white;
    border-radius: 15px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    transition: all 0.3s ease;
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 15px rgba(0,0,0,0.1);
}

.feature-card i {
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.feature-card h3 {
    margin: 1rem 0;
    font-size: 1.5rem;
    color: var(--dark-color);
}

.feature-card p {
    color: #666;
    margin-bottom: 0;
}

/* Buttons */
.btn-primary {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
    padding: 0.75rem 2rem;
    font-weight: 600;
    border-radius: 30px;
    transition: all 0.3s ease;
}

.btn-primary:hover {
    background-color: #2C5282;
    border-color: #2C5282;
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
}

/* Hero section specific button */
.hero-section .btn-primary {
    background-color: #3DDC84;
    border-color: #3DDC84;
}

.hero-section .btn-primary:hover {
    background-color: #2fc76e;
    border-color: #2fc76e;
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(61, 220, 132, 0.2);
}

/* Contact Form */
#contact {
    background-color: var(--light-color);
}

.form-control {
    padding: 0.75rem;
    border: 1px solid #ddd;
    border-radius: 8px;
    transition: all 0.3s ease;
}

.form-control:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(54, 105, 152, 0.25);
}

/* Footer */
footer {
    background-color: var(--dark-color);
}

.social-links a {
    font-size: 1.5rem;
    transition: all 0.3s ease;
    display: inline-block;
}

.social-links a:hover {
    color: var(--primary-color) !important;
    transform: translateY(-3px);
}

/* Section Headers */
section h2 {
    color: var(--dark-color);
    font-weight: 700;
    margin-bottom: 3rem;
    position: relative;
    padding-bottom: 1rem;
}

section h2::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background-color: var(--primary-color);
}

/* Responsive Design */
@media (max-width: 768px) {
    .hero-section {
        text-align: center;
        padding-top: 120px;
    }
    
    .hero-section img {
        margin-top: 2rem;
    }
    
    .feature-card {
        margin-bottom: 1rem;
    }

    section h2 {
        font-size: 2rem;
    }
}

/* Animations */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.feature-card, .hero-section h1, .hero-section p {
    animation: fadeIn 1s ease-out;
}

/* Target Users Section */
#target-users .feature-card {
    background: linear-gradient(135deg, #fff 0%, #f8f9fa 100%);
}

#target-users .feature-card i {
    color: var(--accent-color);
}

/* Download Section */
#download {
    background: linear-gradient(135deg, #f5f7fa 0%, #e3e6f0 100%);
}

#download .btn-primary {
    padding: 1rem 2.5rem;
    font-size: 1.1rem;
    background-color: var(--google-play-color);
    border-color: var(--google-play-color);
}

#download .btn-primary:hover {
    background-color: #2fc76e;
    border-color: #2fc76e;
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(61, 220, 132, 0.2);
}

/* App Preview */
.app-preview {
    width: 100%;
    max-width: 480px;
    height: auto;
    margin: 0 auto;
    display: block;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}

/* App Preview Gallery */
.app-preview-gallery {
    width: 100%;
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 480px;
}

.gallery-image {
    position: absolute;
    top: 0;
    left: 0;
    width: 480px;
    height: 480px;
    object-fit: contain;
    opacity: 0;
    transition: opacity 1s ease-in-out;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}

.gallery-image.active {
    opacity: 1;
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .app-preview-gallery {
        height: 420px;
    }
    
    .gallery-image {
        width: 420px;
        height: 420px;
    }
}