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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: #000;
    color: #fff;
    line-height: 1.6;
}

/* Header */
.header {
    background: rgba(0, 0, 0, 0.95);
    padding: 1rem 2rem;
    position: sticky;
    top: 0;
    z-index: 100;
    border-bottom: 1px solid rgba(16, 185, 129, 0.3);
    backdrop-blur-sm;
}

.header-content {
    max-width: 1200px;
    margin: 0 auto;
}

.back-link {
    color: #10B981;
    text-decoration: none;
    font-size: 1.05rem;
    font-weight: 500;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
}

.back-link:hover {
    opacity: 0.8;
    transform: translateX(-5px);
}

/* Hero Section */
.hero {
    padding: 4rem 2rem;
    background: linear-gradient(135deg, #000 0%, #001a0f 50%, #002a1a 100%);
    border-bottom: 1px solid rgba(16, 185, 129, 0.3);
}

.hero-container {
    max-width: 1200px;
    margin: 0 auto;
}

.app-header {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.app-icon {
    width: 100px;
    height: 100px;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(16, 185, 129, 0.3);
}

.app-title {
    font-size: 3.5rem;
    color: #10B981;
    font-weight: 800;
    margin-bottom: 0.5rem;
    letter-spacing: -0.02em;
}

.app-tagline {
    font-size: 1.4rem;
    color: #34D399;
    font-weight: 500;
    opacity: 0.85;
}

.app-description {
    font-size: 1.35rem;
    color: #e0e0e0;
    font-weight: 400;
    line-height: 1.7;
    max-width: 900px;
    margin-bottom: 2rem;
}

.github-btn {
    display: inline-block;
    padding: 1.1rem 2.2rem;
    background: #10B981;
    color: #000;
    text-decoration: none;
    border-radius: 8px;
    font-weight: 600;
    font-size: 1.1rem;
    transition: all 0.3s ease;
}

.github-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 25px rgba(16, 185, 129, 0.4);
}

/* Screenshot Section */
.screenshot-section {
    padding: 4rem 2rem;
    background: #000;
}

.screenshot-container {
    max-width: 1200px;
    margin: 0 auto;
}

.section-title {
    font-size: 3rem;
    color: #10B981;
    font-weight: 800;
    margin-bottom: 2rem;
    text-align: center;
    letter-spacing: -0.02em;
}

.screenshot-wrapper {
    max-width: 900px;
    margin: 0 auto;
    background: #0a0a0a;
    border: 1px solid rgba(16, 185, 129, 0.3);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 10px 40px rgba(16, 185, 129, 0.2);
}

.screenshot-wrapper img {
    width: 100%;
    height: auto;
    display: block;
}

/* Features Section */
.features {
    padding: 4rem 2rem;
    background: linear-gradient(135deg, #001a0f 0%, #000 100%);
}

.features-container {
    max-width: 1200px;
    margin: 0 auto;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.feature-card {
    background: rgba(16, 185, 129, 0.05);
    border: 1px solid rgba(16, 185, 129, 0.2);
    border-radius: 12px;
    padding: 2rem;
    text-align: center;
    transition: all 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-5px);
    border-color: #10B981;
    box-shadow: 0 10px 25px rgba(16, 185, 129, 0.2);
}

.feature-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.feature-card h3 {
    font-size: 1.5rem;
    color: #10B981;
    font-weight: 700;
    margin-bottom: 1rem;
}

.feature-card p {
    color: #e0e0e0;
    font-size: 1.05rem;
    font-weight: 400;
    line-height: 1.6;
    opacity: 0.9;
}

/* Installation Section */
.installation {
    padding: 4rem 2rem;
    background: #000;
}

.installation-container {
    max-width: 1200px;
    margin: 0 auto;
}

.code-block {
    background: #0a0a0a;
    border: 1px solid rgba(16, 185, 129, 0.3);
    border-radius: 12px;
    padding: 2rem;
    margin: 2rem auto;
    max-width: 800px;
}

.code-block pre {
    color: #10B981;
    font-size: 1.15rem;
    font-family: 'JetBrains Mono', 'Fira Code', 'Courier New', monospace;
    overflow-x: auto;
    margin: 0;
}

.installation-note {
    text-align: center;
    color: #34D399;
    font-size: 1.1rem;
    margin-top: 1rem;
}

.installation-note code {
    background: rgba(16, 185, 129, 0.15);
    padding: 0.2rem 0.6rem;
    border-radius: 4px;
    color: #10B981;
}

/* Contribute Section */
.contribute {
    padding: 4rem 2rem;
    background: linear-gradient(135deg, #001a0f 0%, #000 100%);
}

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

.contribute-description {
    font-size: 1.2rem;
    color: #e0e0e0;
    max-width: 800px;
    margin: 0 auto 2rem;
    line-height: 1.7;
}

.contribute-btn {
    display: inline-block;
    padding: 1.1rem 2.2rem;
    background: rgba(16, 185, 129, 0.15);
    color: #10B981;
    text-decoration: none;
    border: 2px solid #10B981;
    border-radius: 8px;
    font-weight: 600;
    font-size: 1.1rem;
    transition: all 0.3s ease;
}

.contribute-btn:hover {
    background: #10B981;
    color: #000;
    transform: translateY(-3px);
    box-shadow: 0 10px 25px rgba(16, 185, 129, 0.3);
}

/* Footer */
.footer {
    background: linear-gradient(135deg, #001a0f 0%, #000 100%);
    padding: 2rem;
    border-top: 1px solid rgba(16, 185, 129, 0.3);
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.footer-content p {
    color: #e0e0e0;
    font-size: 1rem;
    font-weight: 400;
    opacity: 0.7;
}

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

.footer-links a {
    color: #10B981;
    font-size: 1.05rem;
    font-weight: 500;
    text-decoration: none;
    transition: opacity 0.3s ease;
}

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

/* Mobile Responsiveness */
@media (max-width: 768px) {
    .header {
        padding: 1rem;
    }

    .hero {
        padding: 3rem 1rem;
    }

    .app-header {
        flex-direction: column;
        text-align: center;
    }

    .app-icon {
        width: 80px;
        height: 80px;
    }

    .app-title {
        font-size: 2.5rem;
    }

    .app-tagline {
        font-size: 1.1rem;
    }

    .app-description {
        font-size: 1.1rem;
    }

    .section-title {
        font-size: 2rem;
    }

    .screenshot-section,
    .features,
    .installation,
    .contribute {
        padding: 3rem 1rem;
    }

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

    .footer-content {
        flex-direction: column;
        text-align: center;
    }

    .footer-links {
        gap: 1rem;
    }
}

@media (max-width: 480px) {
    .app-title {
        font-size: 2rem;
    }

    .section-title {
        font-size: 1.75rem;
    }

    .code-block {
        padding: 1.5rem;
    }
}