:root {
    --bg-color: #121212;
    --surface-color: #1e1e1e;
    --primary-color: #00FFC2; /* Mint */
    --secondary-color: #7050FF; /* Lavender */
    --warning-color: #FF4B4B;
    --text-main: #ffffff;
    --text-sub: #aaaaaa;
    --font-main: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    --max-width: 1200px;
}

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

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

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

a:hover {
    color: #fff;
}

/* Layout */
.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 20px;
}

header {
    background-color: rgba(18, 18, 18, 0.95);
    border-bottom: 1px solid #333;
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(10px);
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.logo {
    font-size: 1.5rem;
    font-weight: 800;
    color: #fff;
    font-style: italic;
}

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

.nav-links a {
    color: var(--text-sub);
    font-weight: 500;
}

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

.lang-btn {
    background: transparent;
    border: 1px solid #444;
    color: var(--text-sub);
    padding: 5px 12px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 0.9rem;
    font-weight: 600;
    transition: all 0.3s;
    font-family: var(--font-main);
}

.lang-btn:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
}

.btn-cta {
    background-color: var(--primary-color);
    color: #000;
    padding: 10px 24px;
    border-radius: 50px;
    font-weight: 700;
    display: inline-block;
}

.btn-cta:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0, 255, 194, 0.3);
    color: #000 !important;
}

/* Sections */
section {
    padding: 80px 0;
}

.hero {
    text-align: center;
    padding: 120px 0;
}

.hero h1 {
    font-size: 3.5rem;
    margin-bottom: 20px;
    background: linear-gradient(90deg, #fff, var(--text-sub));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero p {
    font-size: 1.25rem;
    color: var(--text-sub);
    max-width: 600px;
    margin: 0 auto 40px;
}

.section-title {
    font-size: 2rem;
    margin-bottom: 40px;
    text-align: center;
    border-bottom: 2px solid var(--surface-color);
    padding-bottom: 20px;
    display: inline-block;
}

/* Grid */
.grid-3 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.card {
    background-color: var(--surface-color);
    padding: 30px;
    border-radius: 16px;
    border: 1px solid #333;
    transition: transform 0.3s;
}

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

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

.card p {
    color: var(--text-sub);
    margin-bottom: 20px;
}

/* Footer */
footer {
    background-color: #000;
    padding: 60px 0;
    margin-top: 80px;
    border-top: 1px solid #333;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 40px;
}

.footer-links a {
    display: block;
    margin-bottom: 10px;
    color: var(--text-sub);
}

.copyright {
    text-align: center;
    margin-top: 40px;
    color: #555;
    font-size: 0.9rem;
}

/* Article Styles */
.article-content {
    max-width: 800px;
    margin: 0 auto;
    background: var(--surface-color);
    padding: 40px;
    border-radius: 20px;
}

.article-content h1 {
    font-size: 2.5rem;
    margin-bottom: 10px;
}

.article-meta {
    color: var(--text-sub);
    margin-bottom: 30px;
    font-size: 0.9rem;
}

.article-body h2 {
    margin-top: 40px;
    margin-bottom: 20px;
    color: var(--primary-color);
}

.article-body p {
    margin-bottom: 1.5rem;
    font-size: 1.1rem;
    color: #ddd;
}

.article-body ul {
    margin-bottom: 1.5rem;
    padding-left: 20px;
    color: #ddd;
}

.article-body li {
    margin-bottom: 10px;
}