@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@300;400;500;700;800&display=swap');

:root {
    --primary-color: #738b73;
    --secondary-color: #8aa08a;
    --background-dark: #e3f0e3;
    --background-light: #ffffff;
    --text-color: #333;
    --text-muted: #5c5c5c;
    --white: #ffffff;
    --border-radius: 12px;
}

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

body {
    font-family: 'Poppins', sans-serif;
    background-color: var(--background-dark);
    color: var(--text-color);
    line-height: 1.7;
}

.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 20px;
}

/* --- Header --- */
.main-header {
    padding: 20px 0;
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(227, 240, 227, 0.8);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(0,0,0,0.05);
}

.main-header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

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

.logo {
    height: 40px;
    margin-right: 12px;
}

.main-nav a {
    color: var(--text-muted);
    text-decoration: none;
    margin-left: 25px;
    font-weight: 500;
    transition: color 0.3s ease;
}

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

/* --- Buttons --- */
.btn {
    padding: 12px 28px;
    border-radius: var(--border-radius);
    text-decoration: none;
    font-weight: 700;
    display: inline-flex;
    align-items: center;
    gap: 10px;
    transition: all 0.3s ease;
    border: none;
}

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

.btn-primary:hover {
    background-color: var(--secondary-color);
    transform: translateY(-2px);
}

.btn-light {
    background: var(--white);
    color: var(--primary-color);
    border: 1px solid #ddd;
}

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

.btn-secondary {
    background: transparent;
    color: var(--white);
    border: 1px solid var(--white);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
}

/* --- Hero Section --- */
.hero-section {
    padding: 80px 0;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 20px;
    color: var(--white);
    text-align: center;
}

.hero-subtitle {
    font-size: 1.2rem;
    max-width: 600px;
    margin: 0 auto 30px;
    color: rgba(255, 255, 255, 0.9);
}

.hero-buttons {
    display: flex;
    justify-content: center;
    gap: 15px;
    flex-wrap: wrap;
}

/* --- Sections --- */
.section-title {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 50px;
    font-weight: 700;
}

.features-section, .download-section {
    padding: 80px 0;
}

/* --- Features --- */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}

.feature-card {
    background: var(--background-light);
    padding: 35px;
    border-radius: var(--border-radius);
    text-align: center;
    border: 1px solid rgba(0,0,0,0.05);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    box-shadow: 0 5px 15px rgba(0,0,0,0.03);
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0,0,0,0.07);
}

.feature-card i {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 20px;
}

.feature-card h3 {
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 10px;
}

.feature-card p {
    color: var(--text-muted);
}

/* --- Promo Section --- */
.promo-section {
    padding: 80px 0;
    background: var(--background-light);
}

.promo-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 50px;
}

.promo-text {
    flex: 1;
}
.promo-text h2 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 20px;
}
.promo-text p {
    margin-bottom: 30px;
    color: var(--text-muted);
}

.promo-image {
    flex: 1;
    max-width: 500px;
}

.img-fluid-rounded {
    width: 100%;
    height: auto;
    border-radius: var(--border-radius);
    box-shadow: 0 15px 30px rgba(0,0,0,0.1);
}

/* --- Download Section --- */
.download-section {
    background-color: var(--background-dark);
}

.download-section p {
    max-width: 600px;
    margin: 0 auto 30px;
    color: var(--text-muted);
}

/* --- Footer --- */
.main-footer {
    padding: 30px 0;
    background-color: var(--primary-color);
}

.main-footer .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: rgba(255,255,255,0.8);
    font-size: 0.9rem;
}

.footer-links a {
    color: var(--white);
    text-decoration: none;
    margin-left: 20px;
}

.footer-links a:hover {
    text-decoration: underline;
}

/* --- Responsive --- */
@media (max-width: 768px) {
    .main-header .container {
        flex-direction: column;
        gap: 15px;
    }

    .main-nav {
        display: flex;
        gap: 15px;
        margin: 0;
    }

    .main-nav a {
        margin-left: 0;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .promo-content {
        flex-direction: column;
    }
    
    .section-title {
        font-size: 2rem;
    }

    .main-footer .container {
        flex-direction: column;
        gap: 10px;
    }
}