:root {
    --black: #000000;
    --white: #ffffff;
    --light-gray: #e0e0e0;
    --medium-gray: #a0a0a0;
    --dark-gray: #303030;
    --darker-gray: #1a1a1a;
    --border-gray: #404040;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif;
}

body {
    background-color: var(--black);
    color: var(--white);
    line-height: 1.6;
    overflow-x: hidden;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header & Navigation */
header {
    background: rgba(0, 0, 0, 0.9);
    backdrop-filter: blur(10px);
    padding: 24px 0;
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    border-bottom: 1px solid var(--border-gray);
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 20px;
}

.logo-svg-wrapper {
    width: auto;
    height: 48px;
    overflow: hidden;
    display: flex;
    align-items: center;
}

.logo-img {
    width: auto;
    height: 100%;
    object-fit: contain;
    display: block;
}

.nav-links {
    display: flex;
    gap: 30px;
}

.nav-links a {
    color: var(--light-gray);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.95rem;
    transition: color 0.3s;
    letter-spacing: 0.5px;
}

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

.download-btn {
    background: var(--white);
    color: var(--black);
    padding: 10px 24px;
    border-radius: 30px;
    text-decoration: none;
    font-weight: 600;
    font-size: 0.95rem;
    letter-spacing: 0.5px;
    transition: all 0.3s;
    border: 1px solid var(--white);
}

.download-btn:hover {
    background: transparent;
    color: var(--white);
    transform: translateY(-2px);
}

/* Hero Section */
.hero {
    padding: 160px 0 100px;
    text-align: center;
    position: relative;
    background-image: url('hero-bg.jpg');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
}

.hero h1 {
    font-size: 3.2rem;
    font-weight: 800;
    margin-bottom: 24px;
    letter-spacing: -1px;
    color: var(--white);
}

.hero p {
    font-size: 1.2rem;
    color: var(--light-gray);
    max-width: 700px;
    margin: 0 auto 40px;
    line-height: 1.7;
}

.hero-buttons {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-top: 30px;
}

.hero-buttons a {
    padding: 15px 32px;
    border-radius: 30px;
    text-decoration: none;
    font-weight: 600;
    font-size: 1rem;
    letter-spacing: 0.5px;
    transition: all 0.3s;
}

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

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

.hero-buttons a:hover {
    transform: translateY(-3px);
}

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

.secondary-btn:hover {
    background: var(--light-gray);
    color: var(--black);
}

/* Features Section */
.features {
    padding: 100px 0;
    background: var(--darker-gray);
}

.section-title {
    text-align: center;
    margin-bottom: 60px;
}

.section-title h2 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 20px;
    color: var(--white);
    letter-spacing: -0.5px;
}

.section-title p {
    color: var(--medium-gray);
    max-width: 600px;
    margin: 0 auto;
    font-size: 1.1rem;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.feature-card {
    background: var(--black);
    border-radius: 12px;
    padding: 36px 30px;
    text-align: center;
    transition: transform 0.3s, box-shadow 0.3s;
    border: 1px solid var(--border-gray);
}

.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.3);
}

.feature-icon, .feature-icon-svg {
    height: 100px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 24px;
}

.feature-icon {
    font-size: 2.5rem;
    color: var(--light-gray);
}

.feature-icon-svg img {
    height: 80px;
    width: auto;
}

.feature-card h3 {
    font-size: 1.5rem;
    margin-bottom: 18px;
    color: var(--white);
    font-weight: 600;
}

.feature-card p {
    color: var(--medium-gray);
    line-height: 1.7;
    font-size: 0.98rem;
}

/* Download Section */
.download {
    padding: 100px 0;
    text-align: center;
    background: var(--black);
}

.download-options {
    display: flex;
    justify-content: center;
    gap: 30px;
    margin-top: 50px;
    flex-wrap: wrap;
}

.download-card {
    background: var(--darker-gray);
    border-radius: 12px;
    padding: 36px 30px;
    width: 250px;
    transition: transform 0.3s, box-shadow 0.3s;
    border: 1px solid var(--border-gray);
}

.download-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.3);
}

.download-icon {
    font-size: 3rem;
    margin-bottom: 24px;
    color: var(--light-gray);
}

.download-card h3 {
    font-size: 1.5rem;
    margin-bottom: 18px;
    color: var(--white);
    font-weight: 600;
}

.download-card p {
    color: var(--medium-gray);
    margin-bottom: 20px;
    font-size: 0.95rem;
}

.download-card a {
    display: inline-block;
    margin-top: 20px;
    padding: 12px 24px;
    background: var(--white);
    color: var(--black);
    text-decoration: none;
    border-radius: 30px;
    font-weight: 600;
    font-size: 0.95rem;
    letter-spacing: 0.5px;
    transition: all 0.3s;
    border: 1px solid var(--white);
}

.download-card a:hover {
    background: transparent;
    color: var(--white);
    transform: translateY(-3px);
}

/* About Section */
.about {
    padding: 100px 0;
    background: var(--darker-gray);
}

.about-content {
    display: flex;
    align-items: center;
    gap: 50px;
}

.about-text {
    flex: 1;
}

.about-text h2 {
    font-size: 2.5rem;
    margin-bottom: 24px;
    color: var(--white);
    font-weight: 700;
    letter-spacing: -0.5px;
}

.about-text p {
    color: var(--light-gray);
    margin-bottom: 20px;
    line-height: 1.8;
    font-size: 1.05rem;
}

.about-image {
    flex: 1;
    text-align: center;
}

.about-logo {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.4);
    border: 1px solid var(--border-gray);
    filter: none;
}

/* License Section */
.license {
    padding: 100px 0;
    background: var(--black);
}

.license-content {
    max-width: 800px;
    margin: 0 auto;
    background: var(--darker-gray);
    padding: 48px 40px;
    border-radius: 12px;
    border: 1px solid var(--border-gray);
}

.license-content h2 {
    font-size: 2rem;
    margin-bottom: 28px;
    color: var(--white);
    text-align: center;
    font-weight: 700;
    letter-spacing: -0.5px;
}

.license-content p {
    color: var(--light-gray);
    margin-bottom: 22px;
    line-height: 1.8;
    text-align: left;
    font-size: 0.95rem;
}

.license-content .highlight {
    font-weight: 600;
    color: var(--white);
    margin: 28px 0 18px;
    padding-top: 10px;
    border-top: 1px solid var(--border-gray);
}

/* Footer */
footer {
    background: var(--black);
    padding: 40px 0 30px;
    border-top: 1px solid var(--border-gray);
}

.footer-content {
    display: flex;
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
    gap: 40px;
    margin-bottom: 20px;
    text-align: center;
}

.footer-logo {
    flex: 1;
    min-width: 250px;
    text-align: center;
}

.footer-logo .logo-img {
    height: 32px;
    width: auto;
    object-fit: contain;
    display: block;
    margin: 0 auto 12px;
}

.footer-logo p {
    color: var(--medium-gray);
    line-height: 1.7;
    font-size: 0.95rem;
    margin: 0;
    text-align: center;
    padding: 0 20px;
}

.copyright {
    text-align: center;
    padding-top: 24px;
    border-top: 1px solid var(--border-gray);
    color: var(--medium-gray);
    font-size: 0.9rem;
    letter-spacing: 0.5px;
}

/* Responsive Design */
@media (max-width: 768px) {
    .hero h1 {
        font-size: 2.4rem;
        line-height: 1.2;
    }

    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }

    .about-content {
        flex-direction: column;
    }

    .nav-links {
        display: none;
    }

    .section-title h2 {
        font-size: 2rem;
    }

    .logo-svg-wrapper {
        height: 32px;
    }

    .about-logo {
        max-width: 80%;
        height: auto;
    }

    .footer-logo {
        min-width: 100%;
    }

    .footer-content {
        margin-bottom: 16px;
    }
}

@media (max-width: 480px) {
    .hero {
        padding: 140px 0 80px;
    }

    .hero h1 {
        font-size: 2rem;
    }

    .hero p {
        font-size: 1.1rem;
    }

    .download-card {
        width: 100%;
        max-width: 280px;
    }
}