:root {
    --bg-dark: #0f1115;
    --bg-card: #161b22;
    --bg-card-hover: #1f242d;
    --primary: #0070f3;
    --primary-hover: #0056b3;
    --danger: #f85149;
    --danger-hover: #d33c35;
    --success: #2ea043;
    --success-hover: #238636;
    --text-primary: #e6edf3;
    --text-muted: #8b949e;
    --border: #30363d;
}

body {
    background-color: var(--bg-dark);
    color: var(--text-primary);
    font-family: 'Inter', sans-serif;
    margin: 0;
    padding: 0;
    line-height: 1.5;
}

.bg-dark { background-color: var(--bg-dark); }
.text-light { color: var(--text-primary); }
.text-muted { color: var(--text-muted); }
.text-center { text-align: center; }

.flex-center {
    display: flex;
    justify-content: center;
    align-items: center;
}

.min-vh-100 { min-height: 100vh; }
.mb-4 { margin-bottom: 1.5rem; }
.mt-3 { margin-top: 1rem; }
.mt-4 { margin-top: 1.5rem; }
.mt-5 { margin-top: 3rem; }
.w-100 { width: 100%; }

.login-card {
    background: var(--bg-card);
    padding: 2.5rem;
    border-radius: 12px;
    border: 1px solid var(--border);
    width: 100%;
    max-width: 400px;
    box-shadow: 0 8px 24px rgba(0,0,0,0.5);
    backdrop-filter: blur(10px);
}

.form-group {
    margin-bottom: 1rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    font-size: 0.9rem;
    color: var(--text-primary);
}

.form-control {
    width: 100%;
    padding: 0.75rem 1rem;
    background: var(--bg-dark);
    border: 1px solid var(--border);
    color: var(--text-primary);
    border-radius: 8px;
    outline: none;
    transition: all 0.2s;
    font-family: 'Inter', sans-serif;
    box-sizing: border-box;
}

.form-control:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(0, 112, 243, 0.2);
}

.btn {
    display: inline-block;
    font-weight: 600;
    text-align: center;
    cursor: pointer;
    border: 1px solid transparent;
    padding: 0.75rem 1.5rem;
    font-size: 1rem;
    border-radius: 8px;
    transition: all 0.2s ease-in-out;
    font-family: 'Inter', sans-serif;
}

.btn-primary {
    color: #fff;
    background-color: var(--primary);
}
.btn-primary:hover { background-color: var(--primary-hover); }

.btn-danger {
    color: #fff;
    background-color: var(--danger);
}
.btn-danger:hover { background-color: var(--danger-hover); }

.btn-success {
    color: #fff;
    background-color: var(--success);
}
.btn-success:hover { background-color: var(--success-hover); }

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
}

.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    border-bottom: 1px solid var(--border);
    padding-bottom: 1rem;
}

.header h1 {
    margin: 0;
    font-size: 1.5rem;
    display: flex;
    align-items: center;
    gap: 10px;
}

.card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 1.5rem;
    margin-bottom: 1.5rem;
}

.grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1.5rem;
}

.alert {
    padding: 1rem;
    border-radius: 8px;
    margin-bottom: 1rem;
    font-size: 0.9rem;
}
.alert-danger {
    background: rgba(248, 81, 73, 0.1);
    color: var(--danger);
    border: 1px solid var(--danger);
}
.alert-success {
    background: rgba(46, 160, 67, 0.1);
    color: var(--success);
    border: 1px solid var(--success);
}

.server-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 1.5rem;
    transition: transform 0.2s, background-color 0.2s;
    cursor: pointer;
}
.server-card:hover {
    transform: translateY(-2px);
    background-color: var(--bg-card-hover);
    border-color: var(--primary);
}
.server-card.active {
    border-color: var(--success);
    box-shadow: 0 0 0 2px rgba(46, 160, 67, 0.2);
}

.action-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 15px;
}

.terminal-box {
    background: #000;
    color: #0f0;
    font-family: monospace;
    padding: 1rem;
    border-radius: 8px;
    width: 100%;
    height: 300px;
    overflow-y: auto;
    white-space: pre-wrap;
    box-sizing: border-box;
    border: 1px solid var(--border);
}

.modal {
    display: none;
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(0,0,0,0.7);
    backdrop-filter: blur(4px);
    z-index: 999;
}
.modal.open {
    display: flex;
    justify-content: center;
    align-items: center;
}
.modal-content {
    background: var(--bg-card);
    width: 100%;
    max-width: 500px;
    border-radius: 12px;
    padding: 2rem;
    border: 1px solid var(--border);
    position: relative;
}
.modal-close {
    position: absolute;
    top: 15px; right: 15px;
    background: transparent;
    border: none;
    color: var(--text-muted);
    font-size: 1.5rem;
    cursor: pointer;
}
.modal-close:hover { color: #fff; }

.badge {
    padding: 3px 8px;
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 600;
}
.badge-success { background: var(--success); color: #fff; }

/* Loader */
.loader {
    border: 3px solid rgba(255,255,255,0.1);
    border-top: 3px solid var(--primary);
    border-radius: 50%;
    width: 20px;
    height: 20px;
    animation: spin 1s linear infinite;
    display: inline-block;
    vertical-align: middle;
    margin-right: 8px;
}
@keyframes spin { 0% { transform: rotate(0deg); } 100% { transform: rotate(360deg); } }