:root {
    --bg-dark: #070a12;
    --card-bg: rgba(13, 20, 36, 0.65);
    --border-cyan: rgba(0, 243, 255, 0.25);
    --accent-cyan: #00f3ff;
    --accent-green: #00ffaa;
    --accent-red: #ff3e6c;
    --glow-cyan: rgba(0, 243, 255, 0.4);
    --font-heading: 'Outfit', sans-serif;
    --font-code: 'JetBrains Mono', monospace;
}

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

body {
    background-color: var(--bg-dark);
    background-image: 
        radial-gradient(circle at 15% 15%, rgba(0, 243, 255, 0.08) 0%, transparent 45%),
        radial-gradient(circle at 85% 85%, rgba(0, 255, 170, 0.05) 0%, transparent 45%);
    color: #e2e8f0;
    font-family: var(--font-heading);
    min-height: 100vh;
    padding: 2rem 1rem;
    display: flex;
    justify-content: center;
}

.app-container {
    width: 100%;
    max-width: 1000px;
    display: flex;
    flex-direction: column;
    gap: 1.8rem;
}

/* Header Navbar */
.app-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: var(--card-bg);
    border: 1px solid var(--border-cyan);
    backdrop-filter: blur(16px);
    border-radius: 16px;
    padding: 1.2rem 1.8rem;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
}

.brand-title {
    display: flex;
    align-items: center;
    gap: 12px;
}

.brand-title h1 {
    font-size: 1.4rem;
    font-weight: 700;
    letter-spacing: 1.5px;
    background: linear-gradient(135deg, var(--accent-cyan), var(--accent-green));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.status-tag {
    font-size: 0.75rem;
    font-family: var(--font-code);
    padding: 4px 10px;
    border-radius: 20px;
    background: rgba(0, 243, 255, 0.1);
    border: 1px solid var(--accent-cyan);
    color: var(--accent-cyan);
}

/* Presence Card */
.presence-card {
    background: var(--card-bg);
    border: 1px solid var(--border-cyan);
    backdrop-filter: blur(16px);
    border-radius: 16px;
    padding: 1.5rem 1.8rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 15px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

.presence-info h2 {
    font-size: 1.1rem;
    color: #fff;
    margin-bottom: 4px;
}

.presence-info p {
    font-size: 0.85rem;
    color: #94a3b8;
}

.badge-offline {
    background: rgba(255, 62, 108, 0.15);
    border: 1px solid var(--accent-red);
    color: var(--accent-red);
    padding: 8px 16px;
    border-radius: 8px;
    font-family: var(--font-code);
    font-size: 0.85rem;
    display: flex;
    align-items: center;
    gap: 8px;
}

.badge-online {
    background: rgba(0, 255, 170, 0.15);
    border: 1px solid var(--accent-green);
    color: var(--accent-green);
    padding: 8px 16px;
    border-radius: 8px;
    font-family: var(--font-code);
    font-size: 0.85rem;
    display: flex;
    align-items: center;
    gap: 8px;
}

/* Radar & Grid Section */
.radar-grid-container {
    display: flex;
    flex-direction: column;
    gap: 1.2rem;
}

.section-title {
    font-size: 1.1rem;
    color: #fff;
    letter-spacing: 1px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.lobbies-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(290px, 1fr));
    gap: 1.2rem;
}

.lobby-card {
    background: var(--card-bg);
    border: 1px solid var(--border-cyan);
    backdrop-filter: blur(12px);
    border-radius: 14px;
    padding: 1.4rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
    transition: transform 0.2s ease, border-color 0.2s ease;
}

.lobby-card:hover {
    transform: translateY(-4px);
    border-color: var(--accent-cyan);
    box-shadow: 0 10px 25px var(--glow-cyan);
}

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

.host-name {
    font-size: 1.1rem;
    font-weight: 700;
    color: #fff;
}

.host-address {
    font-family: var(--font-code);
    font-size: 0.8rem;
    color: var(--accent-cyan);
    background: rgba(0, 243, 255, 0.08);
    padding: 4px 8px;
    border-radius: 6px;
}

.btn-join {
    background: linear-gradient(135deg, var(--accent-cyan), var(--accent-green));
    border: none;
    color: #070a12;
    font-weight: 700;
    font-family: var(--font-heading);
    padding: 10px 18px;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s ease;
    width: 100%;
}

.btn-join:hover {
    transform: scale(1.02);
    box-shadow: 0 0 15px var(--glow-cyan);
}

.btn-download {
    background: rgba(0, 255, 170, 0.1);
    border: 1px solid var(--accent-green);
    color: var(--accent-green);
    font-weight: 600;
    font-family: var(--font-heading);
    font-size: 0.85rem;
    padding: 8px 14px;
    border-radius: 8px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: all 0.2s ease;
}

.btn-download:hover {
    background: rgba(0, 255, 170, 0.2);
    box-shadow: 0 0 15px rgba(0, 255, 170, 0.3);
    transform: translateY(-2px);
}

.download-badge {
    background: var(--accent-green);
    color: #070a12;
    font-family: var(--font-code);
    font-size: 0.75rem;
    font-weight: 700;
    padding: 2px 7px;
    border-radius: 12px;
}