:root {
    --bg-color: #0f172a;
    --card-bg: #1e293b;
    --accent-red: #ef4444;
    --accent-purple: #a855f7;
    --text-main: #f8fafc;
    --text-muted: #94a3b8;
    --border-color: #334155;
}

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

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

.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header */
.header {
    padding: 20px 0;
    border-bottom: 1px solid var(--border-color);
    background: rgba(15, 23, 42, 0.8);
    backdrop-filter: blur(8px);
    position: sticky;
    top: 0;
    z-index: 100;
}

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

.logo {
    font-size: 1.5rem;
    font-weight: 800;
}

.logo-accent {
    color: var(--accent-red);
}

.nav a {
    color: var(--text-muted);
    text-decoration: none;
    margin-left: 20px;
    transition: color 0.2s;
}

.nav a:hover {
    color: var(--text-main);
}

.nav .btn-nav {
    background: var(--accent-purple);
    color: #fff;
    padding: 8px 16px;
    border-radius: 8px;
    font-weight: 600;
}

.nav .btn-nav:hover {
    opacity: 0.9;
}

/* Hero Section */
.hero {
    padding: 100px 0 80px;
    text-align: center;
}

.hero-title {
    font-size: 3rem;
    font-weight: 800;
    margin-bottom: 15px;
}

.gradient-text {
    background: linear-gradient(135deg, var(--accent-red), var(--accent-purple));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-subtitle {
    font-size: 1.2rem;
    color: var(--text-muted);
    max-width: 600px;
    margin: 0 auto 30px;
}

/* IP Box */
.ip-box {
    display: inline-flex;
    align-items: center;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    padding: 10px 10px 10px 20px;
    border-radius: 12px;
    cursor: pointer;
    transition: transform 0.2s, border-color 0.2s;
}

.ip-box:hover {
    transform: translateY(-2px);
    border-color: var(--accent-purple);
}

.ip-text {
    font-family: monospace;
    font-size: 1.2rem;
    font-weight: 600;
    margin-right: 15px;
}

.ip-btn {
    background: var(--accent-purple);
    color: #fff;
    padding: 8px 16px;
    border-radius: 8px;
    font-size: 0.9rem;
    font-weight: 600;
    transition: background 0.2s;
}

.ip-btn.copied {
    background: #22c55e;
}

.online-badge {
    margin-top: 25px;
    font-size: 0.9rem;
    color: var(--text-muted);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.online-dot {
    width: 8px;
    height: 8px;
    background: #22c55e;
    border-radius: 50%;
    box-shadow: 0 0 10px #22c55e;
}

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

.section-title {
    text-align: center;
    font-size: 2rem;
    margin-bottom: 50px;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 20px;
}

.feature-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    padding: 30px;
    border-radius: 16px;
    transition: transform 0.2s;
}

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

.feature-icon {
    font-size: 2rem;
    margin-bottom: 15px;
}

.feature-card h3 {
    margin-bottom: 10px;
}

.feature-card p {
    color: var(--text-muted);
    font-size: 0.95rem;
}

/* Footer */
.footer {
    padding: 30px 0;
    border-top: 1px solid var(--border-color);
    color: var(--text-muted);
    font-size: 0.9rem;
}

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

.footer-links a {
    color: var(--text-muted);
    text-decoration: none;
    margin-left: 15px;
}

.footer-links a:hover {
    color: var(--text-main);
}

@media (max-width: 600px) {
    .hero-title { font-size: 2rem; }
    .footer-container { flex-direction: column; gap: 15px; }
}