:root {
    --bg-dark: #070b13;
    --bg-card: rgba(13, 22, 38, 0.55);
    --border-glass: rgba(255, 255, 255, 0.06);
    --border-glass-hover: rgba(255, 255, 255, 0.12);
    
    --text-primary: #f3f4f6;
    --text-secondary: #9ca3af;
    --text-muted: #6b7280;

    --accent-cyan: #06b6d4;
    --accent-violet: #8b5cf6;
    --accent-emerald: #10b981;
    --accent-red: #ef4444;
    --accent-orange: #f59e0b;

    --sidebar-width: 260px;
    --header-height: 80px;
}

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

body {
    font-family: 'Outfit', sans-serif;
    background-color: var(--bg-dark);
    color: var(--text-primary);
    overflow: hidden;
    height: 100vh;
    width: 100vw;
}

/* Glassmorphism Background Blobs */
.glass-bg-blobs {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: -1;
    overflow: hidden;
    pointer-events: none;
}

.blob {
    position: absolute;
    border-radius: 50%;
    filter: blur(120px);
    opacity: 0.15;
}

.blob-1 {
    width: 500px;
    height: 500px;
    background: var(--accent-violet);
    top: -100px;
    right: -100px;
    animation: float 20s ease-in-out infinite alternate;
}

.blob-2 {
    width: 600px;
    height: 600px;
    background: var(--accent-cyan);
    bottom: -150px;
    left: -150px;
    animation: float 25s ease-in-out infinite alternate-reverse;
}

.blob-3 {
    width: 400px;
    height: 400px;
    background: var(--accent-emerald);
    top: 40%;
    left: 30%;
    opacity: 0.08;
    animation: float 18s ease-in-out infinite alternate;
}

@keyframes float {
    0% { transform: translate(0, 0) scale(1); }
    100% { transform: translate(40px, 40px) scale(1.1); }
}

/* Layout App Container */
.app-container {
    display: flex;
    width: 100%;
    height: 100vh;
}

/* Sidebar Styling */
.sidebar {
    width: var(--sidebar-width);
    background: rgba(8, 12, 22, 0.8);
    border-right: 1px solid var(--border-glass);
    backdrop-filter: blur(20px);
    display: flex;
    flex-direction: column;
    padding: 24px;
    z-index: 10;
}

.logo-area {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 40px;
}

.logo-icon {
    font-size: 28px;
    background: linear-gradient(135deg, var(--accent-cyan), var(--accent-violet));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.logo-title {
    font-weight: 700;
    font-size: 20px;
    letter-spacing: 1px;
    display: block;
    color: var(--text-primary);
}

.logo-subtitle {
    font-size: 11px;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: var(--accent-cyan);
    display: block;
    margin-top: -2px;
}

.nav-links {
    display: flex;
    flex-direction: column;
    gap: 8px;
    flex-grow: 1;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 12px 16px;
    color: var(--text-secondary);
    text-decoration: none;
    border-radius: 12px;
    font-size: 15px;
    font-weight: 500;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border: 1px solid transparent;
}

.nav-item:hover {
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.03);
    border-color: rgba(255, 255, 255, 0.05);
}

.nav-item.active {
    color: var(--text-primary);
    background: linear-gradient(135deg, rgba(6, 182, 212, 0.15), rgba(139, 92, 246, 0.15));
    border-color: rgba(6, 182, 212, 0.25);
    box-shadow: 0 4px 20px rgba(6, 182, 212, 0.1);
}

.nav-item i {
    font-size: 18px;
    width: 20px;
    text-align: center;
}

.status-panel {
    border-top: 1px solid var(--border-glass);
    padding-top: 20px;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.status-indicator {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 0.5px;
}

.pulse-dot {
    width: 8px;
    height: 8px;
    background-color: var(--accent-emerald);
    border-radius: 50%;
    box-shadow: 0 0 10px var(--accent-emerald);
    animation: pulse 1.8s infinite;
}

@keyframes pulse {
    0% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7); }
    70% { transform: scale(1); box-shadow: 0 0 0 8px rgba(16, 185, 129, 0); }
    100% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(16, 185, 129, 0); }
}

.server-details {
    display: flex;
    flex-direction: column;
    gap: 4px;
    font-size: 12px;
    color: var(--text-muted);
    font-family: 'JetBrains Mono', monospace;
}

/* Main Content Area */
.main-content {
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    padding: 0 40px;
    overflow: hidden;
    position: relative;
}

.top-header {
    height: var(--header-height);
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--border-glass);
    flex-shrink: 0;
}

.header-title h1 {
    font-size: 26px;
    font-weight: 700;
    letter-spacing: -0.5px;
}

.header-title p {
    font-size: 14px;
    margin-top: 2px;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 20px;
}

.user-profile {
    display: flex;
    align-items: center;
    gap: 12px;
}

.avatar {
    width: 36px;
    height: 36px;
    background: linear-gradient(135deg, var(--accent-cyan), var(--accent-violet));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    color: #fff;
    font-size: 14px;
}

.username {
    font-size: 14px;
    font-weight: 600;
}

/* Scrollable Container */
.scroll-container {
    flex-grow: 1;
    overflow-y: auto;
    padding: 30px 0;
    height: calc(100vh - var(--header-height));
}

.scroll-container::-webkit-scrollbar {
    width: 6px;
}

.scroll-container::-webkit-scrollbar-track {
    background: transparent;
}

.scroll-container::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.08);
    border-radius: 4px;
}

.scroll-container::-webkit-scrollbar-thumb:hover {
    background: rgba(255, 255, 255, 0.15);
}

/* Tabs */
.tab-pane {
    display: none;
    animation: fadeIn 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

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

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Glassmorphism Cards */
.glass {
    background: var(--bg-card);
    backdrop-filter: blur(16px);
    border: 1px solid var(--border-glass);
    border-radius: 20px;
    box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.25);
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.glass:hover {
    border-color: var(--border-glass-hover);
    box-shadow: 0 8px 32px 0 rgba(6, 182, 212, 0.05);
}

.card {
    padding: 24px;
    margin-bottom: 24px;
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.card-header h3 {
    font-size: 18px;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 10px;
}

/* Stats Cards */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-bottom: 24px;
}

.stat-card {
    padding: 24px;
    display: flex;
    align-items: center;
    gap: 20px;
    position: relative;
    overflow: hidden;
}

.stat-icon-wrapper {
    width: 52px;
    height: 52px;
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
}

.stat-icon-wrapper.cyan {
    background: rgba(6, 182, 212, 0.1);
    color: var(--accent-cyan);
    border: 1px solid rgba(6, 182, 212, 0.2);
}

.stat-icon-wrapper.violet {
    background: rgba(139, 92, 246, 0.1);
    color: var(--accent-violet);
    border: 1px solid rgba(139, 92, 246, 0.2);
}

.stat-icon-wrapper.emerald {
    background: rgba(16, 185, 129, 0.1);
    color: var(--accent-emerald);
    border: 1px solid rgba(16, 185, 129, 0.2);
}

.stat-info {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.stat-label {
    font-size: 13px;
    font-weight: 500;
    color: var(--text-secondary);
}

.stat-value {
    font-size: 24px;
    font-weight: 700;
}

.stat-value .unit {
    font-size: 13px;
    font-weight: 500;
    color: var(--text-muted);
}

.stat-badge {
    position: absolute;
    top: 20px;
    right: 20px;
    padding: 4px 10px;
    border-radius: 20px;
    font-size: 11px;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 4px;
}

.stat-badge.success {
    background: rgba(16, 185, 129, 0.15);
    color: var(--accent-emerald);
    border: 1px solid rgba(16, 185, 129, 0.2);
}

.stat-badge.info {
    background: rgba(6, 182, 212, 0.15);
    color: var(--accent-cyan);
    border: 1px solid rgba(6, 182, 212, 0.2);
}

/* Grid systems */
.grid-2col {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: 24px;
}

.grid-1-3 {
    display: grid;
    grid-template-columns: 340px 1fr;
    gap: 24px;
}

/* Topology Map */
.topology-card {
    height: 480px;
    display: flex;
    flex-direction: column;
}

.canvas-wrapper {
    flex-grow: 1;
    position: relative;
    width: 100%;
    height: 100%;
}

#topologyCanvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(6, 9, 17, 0.4);
    border-radius: 12px;
}

.card-legend {
    display: flex;
    gap: 12px;
}

.legend-item {
    font-size: 11px;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 6px;
    font-weight: 500;
}

.legend-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    display: inline-block;
}

.legend-dot.server { background-color: var(--accent-violet); }
.legend-dot.peer { background-color: var(--accent-cyan); }
.legend-dot.relay { background-color: var(--accent-orange); }

/* Terminal Card */
.terminal-card {
    height: 480px;
    display: flex;
    flex-direction: column;
}

.terminal-body {
    flex-grow: 1;
    background: #04070d;
    border-radius: 12px;
    padding: 16px;
    font-family: 'JetBrains Mono', monospace;
    font-size: 12px;
    overflow-y: auto;
    border: 1px solid rgba(255, 255, 255, 0.04);
}

.terminal-line {
    margin-bottom: 8px;
    line-height: 1.5;
    word-break: break-all;
}

.terminal-line.system { color: var(--accent-cyan); }
.terminal-line.event { color: var(--accent-violet); }
.terminal-line.success { color: var(--accent-emerald); }
.terminal-line.error { color: var(--accent-red); }
.terminal-line.warning { color: var(--accent-orange); }

.btn-clear-terminal {
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    font-size: 14px;
    transition: color 0.3s;
}

.btn-clear-terminal:hover {
    color: var(--accent-red);
}

/* Forms */
.acl-form {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.form-group label {
    font-size: 13px;
    font-weight: 600;
    color: var(--text-secondary);
}

.form-group input, .form-group select {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-glass);
    border-radius: 10px;
    padding: 12px;
    color: #fff;
    font-family: inherit;
    font-size: 14px;
    transition: border-color 0.3s, background-color 0.3s;
}

.form-group input:focus, .form-group select:focus {
    outline: none;
    border-color: var(--accent-cyan);
    background: rgba(255, 255, 255, 0.06);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 20px;
    border-radius: 12px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border: 1px solid transparent;
    font-family: inherit;
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent-cyan), var(--accent-violet));
    color: #fff;
    box-shadow: 0 4px 15px rgba(139, 92, 246, 0.25);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(139, 92, 246, 0.4);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.04);
    border-color: var(--border-glass);
    color: var(--text-primary);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(255, 255, 255, 0.15);
}

.btn-block {
    width: 100%;
}

.btn-approve {
    padding: 4px 10px;
    border-radius: 6px;
    font-size: 11px;
    font-weight: 600;
    cursor: pointer;
    border: 1px solid;
    background: transparent;
    transition: all 0.2s;
}

.btn-approve.btn-success {
    color: var(--accent-emerald);
    border-color: rgba(16, 185, 129, 0.3);
}

.btn-approve.btn-success:hover {
    background: rgba(16, 185, 129, 0.1);
}

.btn-approve.btn-danger {
    color: var(--accent-red);
    border-color: rgba(239, 68, 68, 0.3);
}

.btn-approve.btn-danger:hover {
    background: rgba(239, 68, 68, 0.1);
}

.btn-delete-rule {
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    font-size: 14px;
    transition: color 0.2s;
}

.btn-delete-rule:hover {
    color: var(--accent-red);
}

/* Tables */
.table-card {
    padding: 0;
    overflow: hidden;
}

.table-card .card-header {
    padding: 24px 24px 12px 24px;
}

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

.table {
    width: 100%;
    border-collapse: collapse;
    font-size: 14px;
    text-align: left;
}

.table th {
    background: rgba(255, 255, 255, 0.02);
    border-bottom: 1px solid var(--border-glass);
    padding: 16px 24px;
    font-weight: 600;
    color: var(--text-secondary);
}

.table td {
    padding: 16px 24px;
    border-bottom: 1px solid var(--border-glass);
    color: var(--text-primary);
}

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

.table tbody tr:hover td {
    background: rgba(255, 255, 255, 0.015);
}

/* Text styles & badges */
.text-center { text-align: center; }
.text-cyan { color: var(--accent-cyan); }
.text-violet { color: var(--accent-violet); }
.text-secondary { color: var(--text-secondary); }

.badge {
    background: rgba(6, 182, 212, 0.1);
    color: var(--accent-cyan);
    padding: 4px 10px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
    border: 1px solid rgba(6, 182, 212, 0.2);
}

.status-tag {
    padding: 4px 8px;
    border-radius: 6px;
    font-size: 11px;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 4px;
}

.status-tag.online {
    background: rgba(16, 185, 129, 0.12);
    color: var(--accent-emerald);
    border: 1px solid rgba(16, 185, 129, 0.2);
}

.status-tag.offline {
    background: rgba(107, 114, 128, 0.12);
    color: var(--text-secondary);
    border: 1px solid rgba(107, 114, 128, 0.2);
}

.status-tag.relayed {
    background: rgba(245, 158, 11, 0.12);
    color: var(--accent-orange);
    border: 1px solid rgba(245, 158, 11, 0.2);
}

.action-tag {
    padding: 4px 8px;
    border-radius: 6px;
    font-size: 11px;
    font-weight: 600;
    display: inline-block;
}

.action-tag.accept {
    background: rgba(16, 185, 129, 0.12);
    color: var(--accent-emerald);
}

.action-tag.reject {
    background: rgba(239, 68, 68, 0.12);
    color: var(--accent-red);
}

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

/* Security Additions */
.login-overlay {
    background: rgba(5, 5, 8, 0.95);
    backdrop-filter: blur(10px);
}
.integrity-banner.glass {
    background: rgba(16, 185, 129, 0.05);
    border: 1px solid rgba(16, 185, 129, 0.2);
    color: var(--accent-emerald);
}
.integrity-banner.tampered.glass {
    background: rgba(239, 68, 68, 0.08);
    border: 1px solid rgba(239, 68, 68, 0.3);
    color: var(--accent-red);
}
.posture-icon {
    font-size: 16px;
    margin-right: 4px;
}
.posture-icon.healthy {
    color: var(--accent-emerald);
}
.posture-icon.unhealthy {
    color: var(--accent-red);
}
.posture-tag {
    padding: 3px 6px;
    border-radius: 4px;
    font-size: 10px;
    font-weight: 600;
}
.posture-tag.healthy {
    background: rgba(16, 185, 129, 0.1);
    color: var(--accent-emerald);
}
.posture-tag.unhealthy {
    background: rgba(239, 68, 68, 0.1);
    color: var(--accent-red);
}
.btn-logout:hover {
    color: #ff3333 !important;
}