:root {
    --bg-color: #121212;
    --surface-color: #1e1e1e;
    --primary-color: #4CAF50;
    --text-primary: #ffffff;
    --text-secondary: #b0b0b0;
    --accent-color: #81c784;
}

body {
    margin: 0;
    padding: 0;
    font-family: "Inter", sans-serif;
    background-color: var(--bg-color);
    color: var(--text-primary);
    line-height: 1.6;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

a {
    text-decoration: none;
    color: inherit;
    transition: color 0.3s;
}

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

/* Header */
.header {
    background-color: var(--surface-color);
    padding: 20px 0;
    box-shadow: 0 2px 10px rgba(0,0,0,0.3);
    position: sticky;
    top: 0;
    z-index: 100;
}

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

.overlay {
    display: none;
}

.nav-toggle {
    display: none;
}

.nav-toggle-btn {
    display: none;
    width: 28px;
    height: 20px;
    align-items: center;
    justify-content: center;
    gap: 4px;
    cursor: pointer;
    flex-direction: column;
}

.nav-toggle-btn span {
    display: block;
    width: 24px;
    height: 3px;
    background: var(--text-primary);
    border-radius: 2px;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
    display: inline-flex;
    align-items: center;
    gap: 10px;
}

.logo-img {
    width: 32px;
    height: 32px;
    border-radius: 8px;
    object-fit: cover;
}

.nav a {
    margin-left: 20px;
    font-weight: 600;
}

/* Hero Section */
.hero {
    padding: 80px 0;
    text-align: center;
    background: linear-gradient(180deg, var(--bg-color) 0%, var(--surface-color) 100%);
}

.hero h1 {
    font-size: 3rem;
    margin-bottom: 20px;
    background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero p {
    font-size: 1.2rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto 40px;
}

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

.download-btn {
    display: inline-flex;
    align-items: center;
    background-color: var(--primary-color);
    color: white;
    padding: 15px 30px;
    border-radius: 50px;
    font-weight: 700;
    font-size: 1.1rem;
    transition: transform 0.2s, box-shadow 0.2s;
    border: 2px solid transparent;
}

.secondary-btn {
    background-color: transparent;
    border: 2px solid var(--primary-color);
    color: var(--primary-color);
}

.secondary-btn:hover {
    background-color: rgba(76, 175, 80, 0.1);
    color: var(--primary-color);
    box-shadow: 0 5px 15px rgba(76, 175, 80, 0.2);
}

.download-btn:not(.secondary-btn):hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(76, 175, 80, 0.4);
    color: white;
}

.download-btn svg {
    margin-right: 10px;
}

.version-text {
    margin-top: 10px;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

/* Features Section */
.features {
    padding: 80px 0;
}

.features h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 60px;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.feature-card {
    background-color: var(--surface-color);
    padding: 30px;
    border-radius: 15px;
    transition: transform 0.3s;
}

.feature-card:hover {
    transform: translateY(-5px);
}

.feature-card h3 {
    color: var(--primary-color);
    margin-bottom: 15px;
}

/* Developers Section */
.developers {
    padding: 80px 0;
    background-color: var(--surface-color);
}

.developers h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 40px;
}

.code-block {
    background-color: #121212;
    padding: 20px;
    border-radius: 10px;
    overflow-x: auto;
    border: 1px solid #333;
    font-family: 'Courier New', Courier, monospace;
    font-size: 0.9rem;
    line-height: 1.5;
    color: #e0e0e0;
}

.code-comment {
    color: #6a9955;
}

.code-string {
    color: #ce9178;
}

.code-keyword {
    color: #569cd6;
}

/* Content Page */
.content-page {
    padding: 60px 20px;
}

.content-page h1 {
    margin-bottom: 40px;
    color: var(--primary-color);
}

.content-page h2 {
    margin-top: 30px;
    margin-bottom: 15px;
}

.content-page ul {
    margin-bottom: 20px;
    padding-left: 20px;
}

.content-page li {
    margin-bottom: 10px;
    color: var(--text-secondary);
}

/* Footer */
.footer {
    background-color: var(--surface-color);
    padding: 40px 0;
    margin-top: auto;
}

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

.footer-links a {
    margin-left: 20px;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

@media (max-width: 768px) {
    .hero h1 {
        font-size: 2rem;
    }
    .header .container {
        flex-direction: row;
        align-items: center;
        gap: 0;
    }
    .header {
        padding: 12px 0;
    }
    .logo {
        font-size: 1.2rem;
    }
    .nav-toggle-btn {
        display: inline-flex;
        margin-left: auto;
    }
    .nav {
        position: fixed;
        top: 0;
        right: 0;
        height: 100vh;
        width: 70vw;
        max-width: 320px;
        background: var(--surface-color);
        box-shadow: -4px 0 14px rgba(0,0,0,0.4);
        display: flex;
        flex-direction: column;
        gap: 6px;
        padding: 80px 24px 24px 24px;
        transform: translateX(100%);
        transition: transform 0.25s ease;
        z-index: 1000;
    }
    .nav a {
        margin: 0;
        font-size: 0.95rem;
        padding: 8px 0;
    }
    .overlay {
        position: fixed;
        inset: 0;
        background: rgba(0,0,0,0.45);
        z-index: 900;
    }
    .overlay {
        display: none;
    }
    .nav-toggle:checked ~ .nav {
        transform: translateX(0);
    }
    .nav-toggle:checked ~ .overlay {
        display: block;
    }
    .nav-toggle:checked + .nav-toggle-btn span:nth-child(1) {
        transform: translateY(6px) rotate(45deg);
        transition: transform 0.2s ease;
    }
    .nav-toggle:checked + .nav-toggle-btn span:nth-child(2) {
        opacity: 0;
        transition: opacity 0.2s ease;
    }
    .nav-toggle:checked + .nav-toggle-btn span:nth-child(3) {
        transform: translateY(-6px) rotate(-45deg);
        transition: transform 0.2s ease;
    }
    
    .footer .container {
        flex-direction: column;
        text-align: center;
    }
    
    .footer-links {
        margin-top: 20px;
    }
    
    .footer-links a {
        margin: 0 10px;
    }
}

@media (max-width: 480px) {
    .logo-text {
        display: none;
    }
    .nav a {
        font-size: 0.9rem;
    }
}