:root {
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --accent-blue: #0284c7;
    --accent-hover: #0369a1;
    --text-main: #f8fafc;
    --text-muted: #94a3b8;
    --border-color: #334155;
    --success: #10b981;
    --danger: #ef4444;
    --warning: #f59e0b;
}

body {
    background-color: var(--bg-primary);
    color: var(--text-main);
    font-family: 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    margin: 0;
    padding: 0;
    line-height: 1.6;
}

header {
    background-color: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    padding: 20px 40px;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

main {
    max-width: 1200px;
    margin: 40px auto;
    padding: 0 20px;
}

h1, h2, h3 {
    color: var(--text-main);
    font-weight: 600;
}

button, .btn {
    background-color: var(--accent-blue);
    color: white;
    border: none;
    padding: 10px 20px;
    border-radius: 6px;
    font-weight: 500;
    cursor: pointer;
    transition: background 0.2s ease, transform 0.1s ease;
}

button:hover, .btn:hover {
    background-color: var(--accent-hover);
}

input[type="text"], input[type="password"], textarea, select {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    color: var(--text-main);
    padding: 12px;
    border-radius: 6px;
    width: 100%;
    box-sizing: border-box;
    font-size: 100%;
    transition: border-color 0.2s;
}

input:focus, textarea:focus {
    border-color: var(--accent-blue);
    outline: none;
}

/* Tarjetas de Servidores Modernas */
.card-sitio {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 24px;
    margin-bottom: 24px;
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.3);
    transition: transform 0.2s;
}

.card-sitio:hover {
    transform: translateY(-2px);
    border-color: #475569;
}

code {
    background-color: rgba(2, 132, 199, 0.2);
    color: #38bdf8;
    padding: 4px 8px;
    border-radius: 4px;
    font-family: monospace;
}

table {
    width: 100%;
    border-collapse: collapse;
    background-color: var(--bg-secondary);
    border-radius: 8px;
    overflow: hidden;
}

th, td {
    padding: 14px;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

th {
    background-color: rgba(15, 23, 42, 0.6);
    color: var(--text-muted);
}