:root {
    --primary-color: #4CAF50;
    --secondary-color: #2196F3;
    --dark-bg: #1a1a1a;
    --light-bg: #f5f5f5;
    --text-color: #333;
    --white: #ffffff;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

body {
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--light-bg);
}

a {
    text-decoration: none;
    color: inherit;
}

/* Navbar */
.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 5%;
    background-color: var(--white);
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.logo {
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--primary-color);
}

.nav-links a {
    margin-left: 2rem;
    font-weight: 500;
    transition: color 0.3s;
}

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

.btn-nav {
    background-color: var(--primary-color);
    color: var(--white) !important;
    padding: 0.5rem 1rem;
    border-radius: 5px;
}

.btn-nav:hover {
    background-color: #45a049;
}

/* Hero Section */
.hero {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 5rem 10%;
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    min-height: 80vh;
}

.hero-content {
    flex: 1;
    padding-right: 2rem;
}

.hero h1 {
    font-size: 3.5rem;
    margin-bottom: 1.5rem;
    line-height: 1.2;
    color: #2c3e50;
}

.hero p {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    color: #555;
}

.hero-btns {
    display: flex;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.btn-primary {
    background-color: var(--primary-color);
    color: var(--white);
    padding: 1rem 2rem;
    border-radius: 50px;
    font-weight: bold;
    transition: transform 0.3s, box-shadow 0.3s;
}

.btn-secondary {
    background-color: transparent;
    border: 2px solid var(--primary-color);
    color: var(--primary-color);
    padding: 1rem 2rem;
    border-radius: 50px;
    font-weight: bold;
    transition: background-color 0.3s, color 0.3s;
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(76, 175, 80, 0.4);
}

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

.privacy-note {
    font-size: 0.9rem;
    color: #777;
    margin-top: 1rem;
}

.hero-image {
    flex: 1;
    display: flex;
    justify-content: center;
}

.app-preview {
    background-color: #2c3e50;
    width: 350px;
    height: 500px;
    border-radius: 20px;
    padding: 20px;
    box-shadow: 0 20px 50px rgba(0,0,0,0.2);
    display: flex;
    align-items: center;
    justify-content: center;
}

.preview-card {
    background-color: var(--white);
    width: 100%;
    height: 80%;
    border-radius: 10px;
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.stat-row {
    font-size: 1.1rem;
    border-bottom: 1px solid #eee;
    padding-bottom: 10px;
}

.stat-row i {
    width: 30px;
    color: var(--secondary-color);
}

.warning {
    color: red;
    font-weight: bold;
    font-size: 0.9rem;
}

/* Features Section */
.features {
    padding: 5rem 10%;
    background-color: var(--white);
    text-align: center;
}

.features h2 {
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: #2c3e50;
}

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

.feature-card {
    padding: 2rem;
    border-radius: 10px;
    background-color: #f9f9f9;
    transition: transform 0.3s;
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 10px 20px rgba(0,0,0,0.1);
}

.feature-card i {
    font-size: 3rem;
    color: var(--primary-color);
    margin-bottom: 1.5rem;
}

.feature-card h3 {
    margin-bottom: 1rem;
    color: #333;
}

/* How It Works */
.how-it-works {
    padding: 5rem 10%;
    background-color: #e8f5e9;
    text-align: center;
}

.how-it-works h2 {
    font-size: 2.5rem;
    margin-bottom: 3rem;
}

.steps {
    display: flex;
    justify-content: space-around;
    flex-wrap: wrap;
    gap: 2rem;
}

.step {
    flex: 1;
    min-width: 250px;
}

.step-icon {
    width: 60px;
    height: 60px;
    background-color: var(--primary-color);
    color: var(--white);
    font-size: 1.5rem;
    font-weight: bold;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
}

.shop {
    padding: 5rem 10%;
    background-color: var(--white);
    text-align: center;
}

.shop h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    color: #2c3e50;
}

.shop p {
    margin-bottom: 2.5rem;
    color: #666;
}

.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 2rem;
}

.product-card {
    background-color: #f9f9f9;
    border-radius: 12px;
    padding: 2rem;
    transition: transform 0.3s, box-shadow 0.3s;
}

.product-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 10px 20px rgba(0,0,0,0.12);
}

.product-icon {
    width: 70px;
    height: 70px;
    margin: 0 auto 1.2rem;
    border-radius: 50%;
    background-color: rgba(76, 175, 80, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary-color);
    font-size: 2rem;
}

.product-card h3 {
    margin-bottom: 0.8rem;
    color: #333;
}

.product-card p {
    margin-bottom: 1.2rem;
    color: #666;
}

.price {
    font-size: 1.5rem;
    font-weight: bold;
    color: #1a73e8;
    margin-bottom: 1rem;
}

.btn-buy {
    display: inline-block;
    padding: 0.8rem 2rem;
    background-color: var(--secondary-color);
    color: var(--white);
    border-radius: 30px;
    font-weight: bold;
    transition: background-color 0.3s;
}

.btn-buy:hover {
    background-color: #1976d2;
}

/* Download Section */
.download {
    padding: 5rem 10%;
    text-align: center;
    background-color: #2c3e50;
    color: var(--white);
}

.download h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.download p {
    margin-bottom: 2rem;
    opacity: 0.8;
}

.btn-download {
    background-color: var(--primary-color);
    color: var(--white);
    padding: 1.2rem 3rem;
    border: none;
    border-radius: 50px;
    font-size: 1.2rem;
    font-weight: bold;
    cursor: pointer;
    transition: background-color 0.3s;
}

.btn-download:hover {
    background-color: #45a049;
}

/* Footer */
footer {
    padding: 2rem 10%;
    background-color: #1a1a1a;
    color: #888;
    text-align: center;
}

footer p {
    margin-bottom: 0.5rem;
}

/* Responsive */
@media (max-width: 768px) {
    .hero {
        flex-direction: column;
        text-align: center;
        padding: 3rem 5%;
    }

    .hero-content {
        padding-right: 0;
        margin-bottom: 3rem;
    }

    .hero-btns {
        justify-content: center;
    }

    .navbar {
        flex-direction: column;
        gap: 1rem;
    }

    .nav-links a {
        margin: 0 0.5rem;
    }
}