:root {
    --bg-color: #0f172a;
    --card-bg: #1e293b;
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --accent-color: #3b82f6;
    --accent-hover: #2563eb;
    --danger-color: #ef4444;
    --success-color: #22c55e;
    --border-color: #334155;
    --focus-ring: #60a5fa;
}

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

body {
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-primary);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Utilities */
.hidden {
    display: none !important;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    margin: -1px;
    padding: 0;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    border: 0;
}

/* Auth View */
#login-view {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 1rem;
}

.login-card {
    background-color: var(--card-bg);
    padding: 2rem;
    border-radius: 12px;
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.3);
    width: 100%;
    max-width: 400px;
    border: 1px solid var(--border-color);
}

.login-card h1 {
    font-size: 1.5rem;
    margin-bottom: 2rem;
    text-align: center;
}

/* Forms */
.form-group {
    margin-bottom: 1.5rem;
}

label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--text-secondary);
    font-size: 0.875rem;
}

input,
textarea {
    width: 100%;
    padding: 0.75rem;
    background-color: #0f172a;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    color: white;
    font-size: 1rem;
    transition: border-color 0.2s;
}

input:focus,
textarea:focus {
    outline: none;
    border-color: var(--focus-ring);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.2);
}

.btn-primary {
    width: 100%;
    padding: 0.75rem;
    background-color: var(--accent-color);
    color: white;
    border: none;
    border-radius: 6px;
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.2s;
}

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

.btn-primary:focus-visible,
.nav-btn:focus-visible {
    outline: 2px solid white;
    outline-offset: 2px;
}

.error-msg {
    color: var(--danger-color);
    margin-top: 1rem;
    text-align: center;
    min-height: 1.25rem;
}

/* Dashboard Layout */
#dashboard-view {
    display: flex;
    min-height: 100vh;
}

.sidebar {
    width: 250px;
    background-color: var(--card-bg);
    border-right: 1px solid var(--border-color);
    padding: 2rem 1rem;
}

.sidebar ul {
    list-style: none;
}

.nav-btn {
    width: 100%;
    text-align: left;
    background: none;
    border: none;
    color: var(--text-secondary);
    padding: 0.75rem 1rem;
    margin-bottom: 0.5rem;
    border-radius: 6px;
    cursor: pointer;
    font-size: 1rem;
}

.nav-btn.active,
.nav-btn:hover {
    background-color: rgba(59, 130, 246, 0.1);
    color: var(--accent-color);
}

.content-area {
    flex: 1;
    padding: 2rem;
    background-color: var(--bg-color);
}

.dashboard-header {
    position: fixed;
    top: 0;
    right: 0;
    padding: 1rem;
}

/* Panels */
.panel {
    max-width: 800px;
    margin: 0 auto;
}

.panel h2 {
    margin-bottom: 2rem;
    font-size: 1.875rem;
}

.card {
    background-color: var(--card-bg);
    border-radius: 8px;
    padding: 1.5rem;
    border: 1px solid var(--border-color);
    margin-bottom: 1rem;
}

/* Status Cards */
.status-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
}

.status-badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    border-radius: 999px;
    font-size: 0.875rem;
    font-weight: 500;
    margin: 1rem 0;
}

.status-badge.active {
    background-color: rgba(34, 197, 94, 0.2);
    color: var(--success-color);
}

.status-badge.inactive {
    background-color: rgba(239, 68, 68, 0.2);
    color: var(--danger-color);
}

.status-badge.unknown {
    background-color: rgba(148, 163, 184, 0.2);
    color: var(--text-secondary);
}

.card-actions {
    display: flex;
    gap: 0.5rem;
}

.btn-sm {
    padding: 0.5rem 1rem;
    background-color: var(--border-color);
    border: none;
    color: white;
    border-radius: 4px;
    cursor: pointer;
}

.btn-sm:hover {
    background-color: #475569;
}

/* Mobile Responsiveness (Original) */
@media (max-width: 768px) {
    #dashboard-view {
        flex-direction: column;
    }

    .sidebar {
        width: 100%;
        border-right: none;
        border-bottom: 1px solid var(--border-color);
        padding: 1rem;
    }

    .sidebar ul {
        display: flex;
        gap: 1rem;
        overflow-x: auto;
    }
}

/* Monitoring Widgets */
.monitor-value {
    font-size: 2.5rem;
    font-weight: 700;
    margin: 0.5rem 0;
    color: var(--accent-color);
}

.resource-card h3 {
    color: var(--text-secondary);
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 0.5rem;
}

.resource-card small {
    display: block;
    color: var(--text-secondary);
    font-size: 0.875rem;
    margin-bottom: 0.5rem;
}

.progress-bar {
    width: 100%;
    height: 8px;
    background-color: var(--bg-color);
    border-radius: 4px;
    overflow: hidden;
}

.progress-bar>div {
    height: 100%;
    background-color: var(--accent-color);
    transition: width 0.5s ease;
}

.mt-4 {
    margin-top: 1.5rem;
}

/* Data Tables */
.data-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 1rem;
}

.data-table th {
    text-align: left;
    padding: 0.75rem;
    background-color: rgba(0, 0, 0, 0.2);
    color: var(--text-secondary);
    font-size: 0.875rem;
    border-bottom: 1px solid var(--border-color);
}

.data-table td {
    padding: 0.75rem;
    border-bottom: 1px solid var(--border-color);
    font-size: 0.9em;
}

.data-table tr:last-child td {
    border-bottom: none;
}

/* --- Tabs --- */
.tabs {
    display: flex;
    gap: 10px;
    margin-bottom: 20px;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 10px;
}

.tab-btn {
    padding: 8px 16px;
    background: transparent;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    font-weight: 500;
    transition: all 0.2s;
    border-radius: 4px;
}

.tab-btn:hover {
    background: rgba(59, 130, 246, 0.1);
    color: var(--text-primary);
}

.tab-btn.active {
    background: var(--accent-color);
    color: white;
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(5px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* --- Improved Form Layouts --- */
.settings-group {
    margin-bottom: 24px;
}

.settings-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
    flex-wrap: wrap;
    gap: 10px;
}

.settings-header h3 {
    margin: 0;
}

.input-with-action {
    display: flex;
    gap: 10px;
}

.input-with-action input {
    flex: 1;
}

.checkbox-group {
    display: flex;
    align-items: center;
    gap: 10px;
}

.checkbox-group input {
    width: auto;
}

.toast {
    position: fixed;
    bottom: 20px;
    right: -100%;
    background: var(--card-bg);
    color: var(--text-primary);
    padding: 12px 24px;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.5);
    z-index: 1000;
    transition: all 0.3s cubic-bezier(0.18, 0.89, 0.32, 1.28);
    opacity: 0;
    border-left: 4px solid var(--accent-color);
}

.toast-success {
    border-left-color: var(--success-color);
}

.toast-error {
    border-left-color: var(--danger-color);
}

.toast-info {
    border-left-color: var(--accent-color);
}

.loading {
    padding: 20px;
    text-align: center;
    color: var(--text-secondary);
    font-style: italic;
}