/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #21BDAB;
    --primary-dark: #1AA89A;
    --text-dark: #333;
    --text-light: #666;
    --bg-light: #f8f9fa;
    --white: #fff;
    --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 30px rgba(0, 0, 0, 0.2);
}

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

/* Header & Navigation */
header {
    background: var(--white);
    box-shadow: var(--shadow);
    position: sticky;
    top: 0;
    z-index: 100;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.logo-icon {
    width: 40px;
    height: 40px;
    border-radius: 8px;
}

nav h1 {
    font-size: 1.5rem;
    color: var(--primary-color);
    font-weight: 600;
}

.nav-links {
    display: flex;
    gap: 2rem;
}

.nav-links a {
    color: var(--text-dark);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s;
}

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

/* Hero Section */
.hero {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 4rem 2rem;
    max-width: 1200px;
    margin: 0 auto;
    gap: 4rem;
    min-height: 600px;
}

.hero-content {
    flex: 1;
    max-width: 600px;
}

.hero-content h2 {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--text-dark);
    line-height: 1.2;
}

.hero-subtitle {
    font-size: 1.5rem;
    color: var(--text-light);
    margin-bottom: 2rem;
}

.hero-features {
    display: flex;
    gap: 1.5rem;
    margin-bottom: 2rem;
    flex-wrap: wrap;
}

.hero-features span {
    color: var(--primary-color);
    font-weight: 500;
}

.download-button {
    display: inline-block;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    color: var(--white);
    padding: 1rem 2.5rem;
    border-radius: 12px;
    text-decoration: none;
    font-weight: 600;
    font-size: 1.1rem;
    transition: transform 0.3s, box-shadow 0.3s;
    box-shadow: var(--shadow);
}

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

.version-info {
    margin-top: 1rem;
    font-size: 0.9rem;
    color: var(--text-light);
}

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

.app-screenshot {
    max-width: 300px;
    height: auto;
    border-radius: 30px;
    box-shadow: var(--shadow-lg);
    transition: transform 0.3s;
}

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

/* Features Section */
.features {
    background: var(--bg-light);
    padding: 5rem 2rem;
}

.features h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 4rem;
    color: var(--text-dark);
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.feature {
    background: var(--white);
    padding: 2.5rem;
    border-radius: 16px;
    text-align: center;
    box-shadow: var(--shadow);
    transition: transform 0.3s, box-shadow 0.3s;
}

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

.feature-icon {
    font-size: 3rem;
    display: block;
    margin-bottom: 1.5rem;
}

.feature h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--primary-color);
}

.feature p {
    color: var(--text-light);
    line-height: 1.6;
}

/* What's New Section */
.whats-new {
    padding: 5rem 2rem;
    background: var(--white);
}

.whats-new-container {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.badge {
    display: inline-block;
    background: var(--primary-color);
    color: var(--white);
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

.whats-new h2 {
    font-size: 2.5rem;
    margin-bottom: 2rem;
    color: var(--text-dark);
}

.whats-new-list {
    list-style: none;
    text-align: left;
    display: inline-block;
}

.whats-new-list li {
    font-size: 1.2rem;
    margin-bottom: 1rem;
    color: var(--text-dark);
}

/* Download Section */
.download {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    color: var(--white);
    padding: 5rem 2rem;
    text-align: center;
}

.download h2 {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.download-subtitle {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

.download-button-large {
    display: inline-block;
    background: var(--white);
    color: var(--primary-color);
    padding: 1.2rem 3rem;
    border-radius: 12px;
    text-decoration: none;
    font-weight: 700;
    font-size: 1.2rem;
    transition: transform 0.3s, box-shadow 0.3s;
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.2);
}

.download-button-large:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.3);
}

.download-note {
    margin-top: 1.5rem;
    font-size: 1rem;
    opacity: 0.9;
}

/* Use Cases Section */
.use-cases {
    padding: 5rem 2rem;
    background: var(--bg-light);
}

.use-cases h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 4rem;
    color: var(--text-dark);
}

.use-cases-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.use-case {
    background: var(--white);
    padding: 2rem;
    border-radius: 16px;
    text-align: center;
    box-shadow: var(--shadow);
}

.use-case-icon {
    font-size: 3rem;
    display: block;
    margin-bottom: 1rem;
}

.use-case h3 {
    font-size: 1.3rem;
    margin-bottom: 0.5rem;
    color: var(--text-dark);
}

.use-case p {
    color: var(--text-light);
}

/* Footer */
footer {
    background: var(--text-dark);
    color: var(--white);
    padding: 3rem 2rem;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    text-align: center;
}

.footer-brand {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    font-size: 1.3rem;
    margin-bottom: 1.5rem;
}

.footer-logo {
    width: 32px;
    height: 32px;
    border-radius: 6px;
}

.footer-links {
    display: flex;
    gap: 2rem;
    justify-content: center;
    margin-bottom: 1.5rem;
}

.footer-links a {
    color: var(--white);
    text-decoration: none;
    transition: opacity 0.3s;
}

.footer-links a:hover {
    opacity: 0.8;
}

.footer-copyright {
    opacity: 0.8;
    font-size: 0.9rem;
}

/* Responsive Design */
@media (max-width: 968px) {
    .hero {
        flex-direction: column;
        text-align: center;
        padding: 3rem 1.5rem;
    }

    .hero-content h2 {
        font-size: 2.5rem;
    }

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

    .nav-links {
        gap: 1rem;
    }

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

    .phone-mockup {
        width: 250px;
        height: 500px;
    }
}

@media (max-width: 600px) {
    .hero-content h2 {
        font-size: 2rem;
    }

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

    .nav-links {
        flex-direction: column;
        gap: 0.5rem;
    }

    .footer-links {
        flex-direction: column;
        gap: 0.5rem;
    }
}