:root {
    --bg-primary: #0a0a1a;
    --bg-card: #1a1a2e;
    --accent-cyan: #00f0ff;
    --accent-magenta: #ff00aa;
    --accent-green: #00ff88;
    --text-primary: #ffffff;
    --text-secondary: #aabbcc;
}

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

html, body {
    width: 100vw;
    height: 100vh;
    overflow: hidden;
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
}

header {
    height: 12vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #0a0a1a, #16213e);
    border-bottom: 2px solid var(--accent-cyan);
    animation: headerGlow 4s ease-in-out infinite alternate;
}

header h1 {
    font-size: 3rem;
    font-weight: 700;
    letter-spacing: 0.05em;
    text-shadow: 0 0 20px var(--accent-cyan);
}

header .subtitle {
    font-size: 1.2rem;
    color: var(--text-secondary);
    margin-top: 0.2rem;
}

.card-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    grid-template-rows: repeat(2, 1fr);
    gap: 1rem;
    padding: 1rem;
    height: 78vh;
}

.card {
    background: var(--bg-card);
    border: 1px solid rgba(0, 240, 255, 0.15);
    border-radius: 12px;
    padding: 1rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    transition: border-color 0.3s;
}

.card:hover {
    border-color: var(--accent-cyan);
}

.card-icon {
    font-size: 2.5rem;
    margin-bottom: 0.3rem;
}

.card h2 {
    font-size: 1.4rem;
    color: var(--accent-cyan);
    margin-bottom: 0.2rem;
}

.card p {
    font-size: 1rem;
    color: var(--text-secondary);
}

.card .url {
    font-size: 1.1rem;
    color: var(--accent-green);
    font-family: 'Consolas', 'Courier New', monospace;
    margin-top: 0.3rem;
}

.card .credentials {
    font-size: 0.9rem;
    color: var(--accent-magenta);
    margin-top: 0.2rem;
}

.card .qr {
    margin-top: 0.5rem;
    line-height: 0;
}

footer {
    height: 10vh;
    display: flex;
    align-items: center;
    justify-content: space-around;
    background: linear-gradient(135deg, #16213e, #0a0a1a);
    border-top: 2px solid var(--accent-magenta);
    font-size: 1.3rem;
    padding: 0 2rem;
}

.footer-item {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.footer-item .qr {
    line-height: 0;
}

@keyframes headerGlow {
    from { border-bottom-color: var(--accent-cyan); }
    to { border-bottom-color: var(--accent-magenta); }
}