:root {
    /* Base Backgrounds - Cyber Obsidian Theme */
    --bg-primary: #090d16;
    --bg-secondary: #0f172a;
    --bg-surface: #131d35;
    --bg-card: rgba(19, 29, 53, 0.75);
    --bg-card-hover: rgba(30, 41, 69, 0.9);
    --bg-panel: rgba(15, 23, 42, 0.85);

    /* Text Colors */
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;

    /* Accents & Brand Gradients */
    --accent: #3b82f6;
    --accent-hover: #2563eb;
    --accent-cyan: #06b6d4;
    --accent-gradient: linear-gradient(135deg, #2563eb, #0284c7);
    --accent-gradient-hover: linear-gradient(135deg, #1d4ed8, #0369a1);

    /* Status Colors */
    --success: #10b981;
    --success-bg: rgba(16, 185, 129, 0.15);
    --success-border: rgba(16, 185, 129, 0.35);

    --warning: #f59e0b;
    --warning-bg: rgba(245, 158, 11, 0.15);
    --warning-border: rgba(245, 158, 11, 0.35);

    --danger: #ef4444;
    --danger-bg: rgba(239, 68, 68, 0.15);
    --danger-border: rgba(239, 68, 68, 0.35);

    --info: #38bdf8;
    --info-bg: rgba(56, 189, 248, 0.15);
    --info-border: rgba(56, 189, 248, 0.35);

    --purple: #a855f7;
    --purple-bg: rgba(168, 85, 247, 0.15);
    --purple-border: rgba(168, 85, 247, 0.35);

    /* Borders and Shadows */
    --border: rgba(255, 255, 255, 0.08);
    --border-hover: rgba(59, 130, 246, 0.4);
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.4);
    --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.5);
    --shadow-lg: 0 20px 50px rgba(0, 0, 0, 0.7);
    --shadow-glow: 0 0 20px rgba(59, 130, 246, 0.25);

    /* Radius */
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 14px;
    --radius-full: 9999px;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    -webkit-font-smoothing: antialiased;
}

/* Custom Scrollbars */
::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}
::-webkit-scrollbar-track {
    background: #090d16;
}
::-webkit-scrollbar-thumb {
    background: #1e293b;
    border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
    background: #334155;
}

body {
    background-color: var(--bg-primary);
    color: var(--text-primary);
    display: flex;
    min-height: 100vh;
    overflow-x: hidden;
}

/* Sidebar */
.sidebar {
    width: 270px;
    background-color: var(--bg-secondary);
    border-right: 1px solid rgba(255, 255, 255, 0.06);
    padding: 1.5rem 1rem;
    display: flex;
    flex-direction: column;
    height: 100vh;
    position: sticky;
    top: 0;
    overflow-y: auto;
    flex-shrink: 0;
    backdrop-filter: blur(16px);
    z-index: 100;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 1.25rem;
    font-weight: 700;
    color: #f8fafc;
    margin-bottom: 2rem;
    padding: 0.25rem 0.5rem;
    letter-spacing: 0.5px;
}

.logo svg {
    color: var(--accent);
    filter: drop-shadow(0 0 8px rgba(59, 130, 246, 0.5));
}

.sidebar-nav {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

.nav-category {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.category-title {
    font-size: 0.7rem;
    font-weight: 700;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1.2px;
    padding: 0.35rem 0.75rem 0.4rem 0.75rem;
}

.nav-group {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.nav-item {
    text-decoration: none;
    color: var(--text-secondary);
    padding: 9px 12px;
    border-radius: var(--radius-sm);
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    font-size: 0.88rem;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 10px;
    cursor: pointer;
    border-left: 3px solid transparent;
}

.nav-item:hover {
    background-color: rgba(59, 130, 246, 0.08);
    color: #f8fafc;
    transform: translateX(2px);
}

.nav-item.active {
    background: linear-gradient(90deg, rgba(59, 130, 246, 0.18), rgba(59, 130, 246, 0.04));
    color: #38bdf8;
    border-left: 3px solid #38bdf8;
    font-weight: 600;
}

.sidebar svg {
    max-width: 22px !important;
    max-height: 22px !important;
}

.nav-icon {
    width: 18px !important;
    height: 18px !important;
    max-width: 18px !important;
    max-height: 18px !important;
    flex-shrink: 0 !important;
    stroke-width: 2;
    transition: color 0.2s ease, transform 0.2s ease;
}

.nav-item:hover .nav-icon, .nav-item.active .nav-icon {
    color: #38bdf8;
}

.submenu-toggle {
    justify-content: space-between;
}

.chevron-icon {
    width: 14px;
    height: 14px;
    transition: transform 0.2s ease;
    color: #64748b;
}

.submenu-items {
    padding-left: 1.5rem;
    margin: 4px 0 6px 1rem;
    border-left: 1px solid #1e293b;
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.sub-nav-item {
    text-decoration: none;
    color: #94a3b8;
    padding: 6px 10px;
    border-radius: 4px;
    font-size: 0.82rem;
    display: flex;
    align-items: center;
    gap: 6px;
    transition: all 0.2s ease;
}

.sub-nav-item:hover, .sub-nav-item.active {
    color: #38bdf8;
    background-color: rgba(59, 130, 246, 0.08);
}

.add-group-btn {
    color: #3b82f6 !important;
    font-weight: 600;
}

/* Main Content */
.main-content {
    flex: 1;
    padding: 2rem 2.5rem;
    overflow-y: auto;
    background: radial-gradient(circle at top right, rgba(37, 99, 235, 0.04), transparent 40%),
                radial-gradient(circle at 10% 20%, rgba(6, 182, 212, 0.03), transparent 30%);
}

header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    padding-bottom: 1.25rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

header h1, header h2 {
    font-weight: 700;
    font-size: 1.75rem;
    letter-spacing: -0.02em;
    background: linear-gradient(135deg, #ffffff, #cbd5e1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.user-profile {
    background: var(--bg-surface);
    padding: 0.5rem 1rem;
    border-radius: 20px;
    border: 1px solid var(--border);
    font-size: 0.9rem;
}

/* Cards & Stat Widgets */
.stats-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2.5rem;
}

.card {
    background: var(--bg-card);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: var(--radius-md);
    padding: 1.5rem;
    transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
}

.card:hover {
    transform: translateY(-3px);
    border-color: var(--border-hover);
    box-shadow: var(--shadow-md), var(--shadow-glow);
}

.card h3 {
    color: var(--text-muted);
    font-size: 0.78rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    font-weight: 700;
    margin-bottom: 0.75rem;
}

.card .value {
    font-size: 2.25rem;
    font-weight: 700;
    letter-spacing: -0.03em;
    color: #ffffff;
}

.highlight-warning { color: var(--warning) !important; }
.highlight-success { color: var(--success) !important; }
.highlight-danger { color: var(--danger) !important; }
.highlight-info { color: var(--info) !important; }

/* Tables & Data Grids */
.hosts-table-container, .panel {
    background: var(--bg-card);
    backdrop-filter: blur(16px);
    border-radius: var(--radius-md);
    border: 1px solid rgba(255, 255, 255, 0.08);
    padding: 1.5rem;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    box-shadow: var(--shadow-sm);
}

.table-responsive {
    width: 100%;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

.hosts-table-container h2 {
    margin-bottom: 1.25rem;
    font-size: 1.2rem;
    font-weight: 700;
    letter-spacing: -0.01em;
}

.data-table {
    width: 100%;
    border-collapse: collapse;
}

.data-table th, .data-table td {
    padding: 0.85rem 1rem;
    text-align: left;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.data-table th {
    color: var(--text-muted);
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    background: rgba(15, 23, 42, 0.6);
    white-space: nowrap;
}

.data-table tr:hover {
    background-color: rgba(59, 130, 246, 0.04);
}

/* Status Badges */
.status-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 3px 10px;
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.02em;
}

.status-online, .status-connected, .status-success {
    background-color: var(--success-bg);
    color: var(--success);
    border: 1px solid var(--success-border);
}

.status-offline {
    background-color: rgba(148, 163, 184, 0.1);
    color: var(--text-secondary);
    border: 1px solid rgba(148, 163, 184, 0.25);
}

.status-required, .status-error, .status-critical {
    background-color: var(--danger-bg);
    color: var(--danger);
    border: 1px solid var(--danger-border);
}

/* Buttons */
.btn-primary {
    background: var(--accent-gradient) !important;
    color: white !important;
    border: 1px solid rgba(255, 255, 255, 0.15) !important;
    padding: 0.5rem 1.1rem !important;
    border-radius: var(--radius-sm) !important;
    cursor: pointer !important;
    font-weight: 600 !important;
    box-shadow: 0 4px 14px rgba(37, 99, 235, 0.35) !important;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1) !important;
}

.btn-primary:hover {
    background: var(--accent-gradient-hover) !important;
    box-shadow: 0 6px 20px rgba(37, 99, 235, 0.5) !important;
    transform: translateY(-1px);
}

.btn-primary:disabled {
    background: var(--bg-surface) !important;
    color: var(--text-muted) !important;
    border-color: var(--border) !important;
    box-shadow: none !important;
    cursor: not-allowed !important;
}

.btn-secondary {
    background: var(--bg-surface);
    color: var(--text-secondary);
    border: 1px solid var(--border);
    padding: 0.5rem 1rem;
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-weight: 500;
    transition: all 0.2s ease;
}

.btn-secondary:hover:not(:disabled) {
    background-color: rgba(255, 255, 255, 0.08);
    color: var(--text-primary);
    border-color: rgba(255, 255, 255, 0.2);
}

.btn-secondary:disabled {
    background-color: var(--bg-primary);
    color: rgba(255, 255, 255, 0.2);
    border-color: rgba(255, 255, 255, 0.05);
    cursor: not-allowed;
}

.text-center {
    text-align: center;
}

/* Modals */
.modal {
    display: none;
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(0, 0, 0, 0.75);
    backdrop-filter: blur(6px);
    align-items: center; justify-content: center;
    z-index: 10000;
}

.modal-content {
    background: var(--bg-surface);
    border: 1px solid rgba(255, 255, 255, 0.1);
    padding: 2rem;
    border-radius: var(--radius-lg);
    width: 440px;
    max-width: 92%;
    position: relative;
    box-shadow: var(--shadow-lg);
}

.modal.open {
    display: flex;
}

.form-group {
    margin-bottom: 1.25rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.4rem;
    color: var(--text-secondary);
    font-size: 0.82rem;
    font-weight: 600;
}

.form-group input, .form-group select, .form-group textarea {
    width: 100%;
    padding: 0.6rem 0.8rem;
    background: #090d16;
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: var(--text-primary);
    border-radius: var(--radius-sm);
    box-sizing: border-box;
}

/* Tabs */
.tab-navigation {
    display: flex;
    gap: 1rem;
    border-bottom: 1px solid var(--border);
    margin-bottom: 2rem;
}

.tab-btn {
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 1rem;
    font-weight: 500;
    padding: 0.75rem 1.5rem;
    cursor: pointer;
    position: relative;
    transition: color 0.2s ease;
}

.tab-btn:hover {
    color: var(--text-primary);
}

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

.tab-btn.active::after {
    content: '';
    position: absolute;
    bottom: -1px;
    left: 0;
    width: 100%;
    height: 3px;
    background-color: var(--accent);
    border-radius: 3px 3px 0 0;
}

.tab-content {
    display: none;
    animation: fadeIn 0.3s ease;
}

.tab-content.active {
    display: block;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(5px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Specific styling for the detail views left/right columns */
.detail-grid {
    display: flex;
    gap: 3rem;
}

.detail-col {
    flex: 1;
}

.detail-row {
    display: flex;
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--border);
}

.detail-row .label {
    width: 220px;
    font-weight: 500;
    color: var(--text-secondary);
}

.detail-row .value {
    flex: 1;
    color: var(--text-primary);
}

.text-center {
    text-align: center;
}

/* Action Dropdown styling */
.action-dropdown-btn {
    background: var(--bg-panel);
    border: 1px solid var(--accent);
    color: var(--text-main);
    padding: 0.3rem 0.6rem;
    border-radius: 6px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
}

.action-dropdown-btn:hover {
    background: var(--accent);
    color: white;
}

.action-dropdown-content {
    display: none;
    position: absolute;
    right: 0;
    background-color: var(--bg-panel);
    min-width: 160px;
    box-shadow: 0px 8px 20px 0px rgba(0,0,0,0.5);
    z-index: 100;
    border: 1px solid var(--accent);
    border-radius: 6px;
    overflow: hidden;
}

.action-dropdown-content a {
    color: var(--text-main);
    padding: 12px 16px;
    text-decoration: none;
    display: block;
    transition: background 0.2s ease;
}

.action-dropdown-content a:hover {
    background-color: rgba(255, 255, 255, 0.1);
}

/* Full Screen Overlay for Vuln Details */
.full-screen-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background-color: rgba(15, 23, 42, 0.95);
    backdrop-filter: blur(8px);
    z-index: 2000;
    overflow-y: auto;
}

.vuln-overlay-header {
    background-color: var(--bg-secondary);
    padding: 1rem 2rem;
    border-bottom: 1px solid var(--border);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.vuln-overlay-header h2 {
    margin: 0;
    font-size: 1.1rem;
    display: flex;
    align-items: center;
    gap: 1rem;
    color: var(--text-primary);
}

.vuln-overlay-header .score-text {
    font-weight: 400;
    color: var(--text-secondary);
}

.vuln-overlay-actions button {
    background: transparent;
    border: 1px solid var(--border);
    color: var(--text-secondary);
    width: 32px;
    height: 32px;
    border-radius: 4px;
    cursor: pointer;
    margin-left: 0.5rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.vuln-overlay-actions button:hover {
    background: var(--bg-panel);
    color: var(--text-primary);
}

/* Vuln Detail Grid for Details tab */
.vuln-detail-grid {
    display: grid;
    grid-template-columns: 250px 1fr;
    gap: 1rem 2rem;
    padding: 1.5rem 0;
}

.vuln-detail-grid .detail-label {
    font-weight: 600;
    color: var(--text-secondary);
}

.vuln-detail-grid .detail-value {
    color: var(--text-primary);
}

.vuln-detail-grid .detail-value a {
    color: var(--accent);
    text-decoration: none;
}

.vuln-detail-grid .detail-value a:hover {
    text-decoration: underline;
}

/* Tab specific styling for overlay */
.vuln-overlay-tabs {
    background-color: var(--bg-secondary);
    padding: 0 2rem;
    border-bottom: 1px solid var(--border);
}


/* Modern Toggle Switch */
.switch-input:checked + .slider {
    background-color: var(--accent) !important;
}
.switch-input:checked + .slider:before {
    transform: translateX(18px);
}
.slider:before {
    position: absolute;
    content: "";
    height: 14px;
    width: 14px;
    left: 2px;
    bottom: 2px;
    background-color: white;
    transition: .4s;
    border-radius: 50%;
}


/* Badges */
.badge {
    padding: 0.2rem 0.6rem;
    border-radius: 12px;
    font-size: 0.85em;
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
}
.badge-success {
    background-color: rgba(16, 185, 129, 0.15);
    color: var(--success);
    border: 1px solid rgba(16, 185, 129, 0.3);
}
.badge-danger {
    background-color: rgba(239, 68, 68, 0.15);
    color: var(--danger);
    border: 1px solid rgba(239, 68, 68, 0.3);
}
.badge-warning {
    background-color: rgba(245, 158, 11, 0.15);
    color: var(--warning);
    border: 1px solid rgba(245, 158, 11, 0.3);
}
.badge-info {
    background-color: rgba(59, 130, 246, 0.15);
    color: var(--accent);
    border: 1px solid rgba(59, 130, 246, 0.3);
}
.badge-neutral {
    background-color: var(--bg-panel);
    color: var(--text-secondary);
    border: 1px solid var(--border);
}

/* Modern Data Table Enhancements */
.data-table tbody tr {
    transition: background-color 0.2s ease, transform 0.1s ease;
}
.data-table tbody tr:hover {
    background-color: rgba(255, 255, 255, 0.03);
}

/* Input Fields Focus */
input[type="text"], input[type="datetime-local"], select {
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}
input[type="text"]:focus, input[type="datetime-local"]:focus, select:focus {
    border-color: var(--accent) !important;
    box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.2) !important;
}

/* Standard Close Button */
.btn-close-box {
    background: rgba(239, 68, 68, 0.15) !important;
    color: #ef4444 !important;
    border: 1px solid rgba(239, 68, 68, 0.3) !important;
    border-radius: 6px !important;
    width: 32px !important;
    height: 32px !important;
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
    cursor: pointer !important;
    font-size: 1.2rem !important;
    line-height: 1 !important;
    transition: all 0.2s ease !important;
    padding: 0 !important;
}

.btn-close-box:hover {
    background: rgba(239, 68, 68, 0.25) !important;
    color: #f87171 !important;
}