:root {
    --bg-color: #0a0a12;
    --text-color: #e0e0e0;
    --primary-color: #3b82f6;
    --secondary-color: #8b5cf6;
    --accent-color: #06b6d4;
    --glass-bg: rgba(255, 255, 255, 0.05);
    --glass-border: rgba(255, 255, 255, 0.1);
    --card-bg: #11111a;
    --font-main: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
}

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

body {
    font-family: var(--font-main);
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
    overflow-x: hidden;
}

/* Typography */
h1,
h2,
h3 {
    font-weight: 700;
    letter-spacing: -0.02em;
    color: #fff;
}

h3 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
    color: var(--primary-color);
}

p {
    margin-bottom: 1.5rem;
    color: #94a3b8;
}

/* Utilities */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

.btn {
    display: inline-block;
    padding: 0.8rem 2rem;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: #fff;
    text-decoration: none;
    border-radius: 50px;
    font-weight: 600;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border: none;
    cursor: pointer;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(59, 130, 246, 0.3);
}

/* Navbar */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    padding: 1.5rem 0;
    z-index: 1000;
    background: rgba(10, 10, 18, 0.8);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--glass-border);
}

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

.nav-links {
    display: flex;
    gap: 2rem;
    list-style: none;
}

.nav-links a {
    color: #fff;
    text-decoration: none;
    font-weight: 600;
    font-size: 0.95rem;
    transition: color 0.3s;
}

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

.logo {
    font-size: 1.5rem;
    font-weight: 800;
    color: #fff;
    text-decoration: none;
    display: flex;
    align-items: center;
}

.logo span {
    color: var(--primary-color);
}

.lang-switch {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    color: #fff;
    padding: 0.5rem 1rem;
    border-radius: 20px;
    cursor: pointer;
    font-family: var(--font-main);
    transition: background 0.3s;
}

.lang-switch:hover {
    background: rgba(255, 255, 255, 0.1);
}

/* Hero Section */
.hero {
    padding: 180px 0 100px;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 800px;
    height: 800px;
    background: radial-gradient(circle, rgba(59, 130, 246, 0.15) 0%, rgba(10, 10, 18, 0) 70%);
    border-radius: 50%;
    z-index: -1;
}

.hero::after {
    content: '';
    position: absolute;
    bottom: -20%;
    left: -10%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(139, 92, 246, 0.1) 0%, rgba(10, 10, 18, 0) 70%);
    border-radius: 50%;
    z-index: -1;
}

.hero-content {
    max-width: 800px;
}

.hero-tag {
    display: inline-block;
    padding: 0.5rem 1rem;
    background: rgba(6, 182, 212, 0.1);
    color: var(--accent-color);
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    border: 1px solid rgba(6, 182, 212, 0.2);
}

/* Features Section */
.features {
    padding: 100px 0;
}

.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 4rem;
}

.card {
    background: var(--card-bg);
    padding: 2rem;
    border-radius: 4px;
    /* Square shape */
    border: 1px solid var(--glass-border);
    transition: transform 0.3s ease, border-color 0.3s ease;
    position: relative;
    overflow: hidden;
}

.card:hover {
    transform: translateY(-10px);
    border-color: var(--primary-color);
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(45deg, transparent, rgba(255, 255, 255, 0.03), transparent);
    transform: translateX(-100%);
    transition: transform 0.6s;
}

.card:hover::before {
    transform: translateX(100%);
}

.card-icon {
    font-size: 2rem;
    margin-bottom: 1rem;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.feature-list {
    list-style: none;
    margin-top: 1rem;
    text-align: left;
    padding-left: 0;
}

.feature-list li {
    margin-bottom: 0.4rem;
    color: #94a3b8;
    font-size: 0.9rem;
    display: flex;
    align-items: flex-start;
    line-height: 1.4;
}

.feature-list li::before {
    content: '•';
    color: var(--primary-color);
    margin-right: 0.8rem;
    font-size: 1.2rem;
    line-height: 1;
}

/* Footer */
footer {
    padding: 4rem 0;
    border-top: 1px solid var(--glass-border);
    text-align: center;
    margin-top: 4rem;
}

.footer-logo {
    font-size: 1.5rem;
    font-weight: 800;
    color: #fff;
    margin-bottom: 1rem;
    display: inline-block;
}

.footer-logo span {
    color: var(--primary-color);
}

.contact-info {
    margin-bottom: 1rem;
    color: #94a3b8;
}

.contact-info a {
    color: var(--primary-color);
    text-decoration: none;
    transition: color 0.3s;
}

.contact-info a:hover {
    color: var(--secondary-color);
}

/* Animations */
.fade-in-up {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.fade-in-up.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Responsive */
@media (max-width: 768px) {
    h1 {
        font-size: 2.5rem;
    }

    .hero {
        padding: 140px 0 60px;
    }
}

/* Brand Section */
.brand-block {
    margin-bottom: 6rem;
    text-align: center;
}

.brand-text {
    max-width: 800px;
    margin: 0 auto;
    color: #94a3b8;
    font-size: 1.1rem;
    line-height: 1.8;
}

.brand-text p {
    margin-bottom: 1.5rem;
}

.brand-list {
    list-style: none;
    text-align: left;
    margin: 2rem auto;
    max-width: 700px;
    padding: 2rem;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 4px;
    /* Square shape */
}

.brand-list li {
    margin-bottom: 1rem;
    padding-left: 1.5rem;
    position: relative;
}

.brand-list li::before {
    content: '•';
    color: var(--primary-color);
    position: absolute;
    left: 0;
    font-weight: bold;
}

.meaning-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.meaning-card {
    background: var(--card-bg);
    padding: 2.5rem;
    border-radius: 4px;
    /* Square shape */
    border: 1px solid var(--glass-border);
    text-align: left;
    transition: transform 0.3s ease, border-color 0.3s ease;
}

.meaning-card:hover {
    transform: translateY(-5px);
    border-color: var(--primary-color);
}

.meaning-card h3 {
    font-size: 2rem;
    margin-bottom: 1.5rem;
    color: #fff;
}

.meaning-sub {
    font-size: 1rem;
    color: var(--primary-color);
    margin-left: 0.5rem;
    font-weight: normal;
}