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

:root {
    --bg-primary: #0a0a0a;
    --bg-secondary: #111111;
    --bg-tertiary: #1a1a1a;
    --accent-blue: #00eeff;
    --accent-green: #20c20e;
    --danger-red: #ff3333;
    --text-primary: #e0e0e0;
    --text-secondary: #888888;
    --border-color: #333333;
}

body {
    font-family: 'Consolas', 'Courier New', monospace;
    background: var(--bg-primary);
    color: var(--text-primary);
    height: 100vh;
    overflow: hidden;
    position: relative;
}

/* Grid Background */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        linear-gradient(rgba(0, 238, 255, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 238, 255, 0.03) 1px, transparent 1px);
    background-size: 20px 20px;
    pointer-events: none;
    z-index: 0;
}

/* Header */
.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 30px;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.5);
    position: relative;
    z-index: 10;
}

.header-left {
    display: flex;
    align-items: center;
}

.logo-container {
    display: flex;
    align-items: center;
    gap: 10px;
}

.mask-icon {
    font-size: 24px;
    filter: drop-shadow(0 0 5px var(--accent-blue));
}

.logo-text {
    font-size: 18px;
    font-weight: bold;
    color: var(--accent-blue);
    text-shadow: 0 0 10px rgba(0, 238, 255, 0.5);
    letter-spacing: 1px;
}

.header-right {
    display: flex;
    align-items: center;
    gap: 25px;
}

.stat-item {
    display: flex;
    gap: 8px;
    font-size: 13px;
}

.stat-label {
    color: var(--text-secondary);
}

.stat-value {
    color: var(--accent-green);
    font-weight: bold;
}

.user-dropdown {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 5px 12px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    cursor: pointer;
    transition: all 0.3s;
}

.user-dropdown {
    position: relative;
}

.user-dropdown:hover {
    border-color: var(--accent-blue);
    box-shadow: 0 0 10px rgba(0, 238, 255, 0.3);
}

.user-dropdown:hover .dropdown-menu {
    display: block;
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    right: 0;
    margin-top: 5px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    min-width: 120px;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.3);
    z-index: 1000;
}

.dropdown-item {
    padding: 10px 15px;
    color: var(--text-primary);
    font-size: 12px;
    cursor: pointer;
    transition: background 0.2s;
}

.dropdown-item:hover {
    background: var(--bg-secondary);
    color: var(--accent-blue);
}

.user-icon {
    font-size: 16px;
}

.user-name {
    color: var(--text-primary);
}

.dropdown-arrow {
    font-size: 10px;
    color: var(--text-secondary);
}

/* Main Container */
.main-container {
    display: flex;
    height: calc(100vh - 140px);
    position: relative;
    z-index: 1;
}

/* Sidebar */
.sidebar {
    width: 280px;
    background: var(--bg-secondary);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.sidebar-header {
    padding: 15px 20px;
    border-bottom: 1px solid var(--border-color);
}

.sidebar-header h3 {
    font-size: 14px;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.client-list {
    flex: 1;
    overflow-y: auto;
    padding: 10px;
}

.client-card {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    padding: 12px;
    margin-bottom: 10px;
    cursor: pointer;
    transition: all 0.3s;
}

.client-card:hover {
    border-color: var(--accent-blue);
    box-shadow: 0 0 10px rgba(0, 238, 255, 0.2);
}

.client-card.active {
    border-color: var(--accent-blue);
    background: rgba(0, 238, 255, 0.1);
    box-shadow: 0 0 15px rgba(0, 238, 255, 0.4);
}

.client-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 8px;
}

.client-name {
    font-size: 13px;
    font-weight: bold;
    color: var(--text-primary);
}

.status-led {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    box-shadow: 0 0 5px currentColor;
}

.status-online {
    background: var(--accent-green);
    color: var(--accent-green);
}

.status-offline {
    background: var(--danger-red);
    color: var(--danger-red);
}

.client-info {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 11px;
    color: var(--text-secondary);
}

.client-ip {
    flex: 1;
}

.os-icon {
    font-size: 14px;
}

.country-flag {
    font-size: 14px;
}

/* Workspace */
.workspace {
    flex: 1;
    display: flex;
    flex-direction: column;
    background: var(--bg-primary);
    overflow: hidden;
}

.workspace-header {
    padding: 15px 25px;
    border-bottom: 1px solid var(--border-color);
}

.selected-client {
    font-size: 16px;
    color: var(--accent-blue);
    text-shadow: 0 0 5px rgba(0, 238, 255, 0.5);
}

.tab-navigation {
    display: flex;
    gap: 5px;
    padding: 10px 20px;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
}

.tab-btn {
    padding: 8px 16px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    font-family: inherit;
    font-size: 12px;
    cursor: pointer;
    transition: all 0.3s;
    border-radius: 4px 4px 0 0;
}

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

.tab-btn.active {
    background: var(--bg-primary);
    border-color: var(--accent-blue);
    border-bottom-color: var(--bg-primary);
    color: var(--accent-blue);
    box-shadow: 0 -2px 10px rgba(0, 238, 255, 0.2);
}

.tab-content {
    flex: 1;
    padding: 20px;
    overflow-y: auto;
}

.tab-pane {
    display: none;
}

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

/* Overview Tab */
.system-vitals {
    margin-bottom: 30px;
}

.vital-item {
    margin-bottom: 20px;
}

.vital-header {
    display: flex;
    justify-content: space-between;
    margin-bottom: 8px;
    font-size: 13px;
}

.vital-label {
    color: var(--text-secondary);
}

.vital-value {
    color: var(--accent-green);
    font-weight: bold;
}

.progress-bar {
    width: 100%;
    height: 8px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--accent-blue), var(--accent-green));
    box-shadow: 0 0 10px rgba(0, 238, 255, 0.5);
    transition: width 0.3s;
}

.system-info {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    padding: 20px;
}

.info-row {
    display: flex;
    padding: 8px 0;
    border-bottom: 1px solid var(--border-color);
    font-size: 13px;
}

.info-row:last-child {
    border-bottom: none;
}

.info-label {
    width: 120px;
    color: var(--text-secondary);
}

.info-value {
    color: var(--text-primary);
}

/* File Explorer Tab */
.file-explorer {
    display: flex;
    gap: 20px;
    height: 400px;
    margin-bottom: 15px;
}

.file-tree {
    width: 250px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    padding: 15px;
    overflow-y: auto;
    font-size: 12px;
}

.tree-item {
    padding: 5px 0;
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    transition: color 0.2s;
}

.tree-item:hover {
    color: var(--accent-blue);
}

.tree-item.indent {
    padding-left: 20px;
}

.tree-item.indent-2 {
    padding-left: 40px;
}

.tree-icon {
    font-size: 14px;
}

.file-list {
    flex: 1;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    padding: 15px;
    overflow-y: auto;
}

.file-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px;
    margin-bottom: 5px;
    border-radius: 4px;
    cursor: pointer;
    transition: background 0.2s;
    font-size: 12px;
}

.file-item:hover {
    background: var(--bg-tertiary);
}

.file-icon {
    font-size: 16px;
}

.file-name {
    flex: 1;
    color: var(--text-primary);
}

.file-size {
    color: var(--text-secondary);
    font-size: 11px;
}

.file-actions {
    display: flex;
    gap: 10px;
}

.action-btn {
    padding: 8px 16px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    font-family: inherit;
    font-size: 12px;
    cursor: pointer;
    border-radius: 4px;
    transition: all 0.3s;
}

.action-btn:hover {
    border-color: var(--accent-blue);
    box-shadow: 0 0 10px rgba(0, 238, 255, 0.3);
    color: var(--accent-blue);
}

/* Remote Desktop Tab */
.desktop-preview {
    margin-bottom: 15px;
}

.desktop-screen {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    padding: 15px;
    height: 400px;
    overflow: hidden;
}

.screen-content {
    background: #1e1e1e;
    border-radius: 4px;
    height: 100%;
    overflow: hidden;
}

.code-editor-preview {
    height: 100%;
    display: flex;
    flex-direction: column;
}

.editor-header {
    background: #252526;
    padding: 8px 15px;
    border-bottom: 1px solid #3e3e42;
    font-size: 12px;
    color: var(--text-secondary);
}

.editor-content {
    flex: 1;
    padding: 15px;
    overflow: auto;
}

.editor-content pre {
    margin: 0;
    color: #d4d4d4;
    font-family: 'Consolas', monospace;
    font-size: 13px;
    line-height: 1.6;
}

.editor-content code {
    color: #ce9178;
}

.desktop-actions {
    display: flex;
    gap: 10px;
}

/* Surveillance Tab */
.surveillance-panel {
    display: flex;
    gap: 30px;
    justify-content: center;
    padding: 40px 0;
}

.surveillance-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 15px;
    padding: 30px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    min-width: 200px;
}

.surveillance-icon {
    font-size: 48px;
    filter: drop-shadow(0 0 10px rgba(0, 238, 255, 0.3));
}

.surveillance-label {
    font-size: 14px;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.surveillance-btn {
    padding: 10px 20px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    font-family: inherit;
    font-size: 12px;
    cursor: pointer;
    border-radius: 4px;
    transition: all 0.3s;
    width: 100%;
}

.surveillance-btn:hover {
    border-color: var(--accent-blue);
    box-shadow: 0 0 10px rgba(0, 238, 255, 0.3);
    color: var(--accent-blue);
}

/* System Tab */
.terminal-window {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    margin-bottom: 20px;
    overflow: hidden;
}

.terminal-header {
    background: var(--bg-tertiary);
    padding: 8px 15px;
    border-bottom: 1px solid var(--border-color);
    font-size: 12px;
    color: var(--accent-green);
}

.terminal-content {
    padding: 15px;
    font-family: 'Consolas', monospace;
    font-size: 13px;
    min-height: 150px;
}

.terminal-line {
    display: flex;
    align-items: center;
}

.terminal-prompt {
    color: var(--accent-green);
}

.terminal-cursor {
    color: var(--accent-blue);
    animation: blink 1s infinite;
}

@keyframes blink {
    0%, 50% { opacity: 1; }
    51%, 100% { opacity: 0; }
}

.process-list {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    overflow: hidden;
}

.process-header {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 15px;
    padding: 12px 15px;
    background: var(--bg-tertiary);
    border-bottom: 1px solid var(--border-color);
    font-size: 12px;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.process-item {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 15px;
    padding: 10px 15px;
    border-bottom: 1px solid var(--border-color);
    font-size: 12px;
    transition: background 0.2s;
}

.process-item:hover {
    background: var(--bg-tertiary);
}

.process-item:last-child {
    border-bottom: none;
}

/* Commands Tab */
.command-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 15px;
}

.command-btn {
    padding: 20px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    font-family: inherit;
    font-size: 13px;
    cursor: pointer;
    border-radius: 4px;
    transition: all 0.3s;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.command-btn:hover {
    border-color: var(--accent-blue);
    box-shadow: 0 0 15px rgba(0, 238, 255, 0.4);
    color: var(--accent-blue);
    transform: translateY(-2px);
}

.command-btn.danger {
    border-color: var(--danger-red);
    color: var(--danger-red);
}

.command-btn.danger:hover {
    box-shadow: 0 0 15px rgba(255, 51, 51, 0.4);
    border-color: var(--danger-red);
}

/* Console Footer */
.console-footer {
    height: 120px;
    background: #000000;
    border-top: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    position: relative;
    z-index: 10;
}

.console-header {
    padding: 8px 15px;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    font-size: 11px;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.console-content {
    flex: 1;
    padding: 10px 15px;
    overflow-y: auto;
    font-family: 'Consolas', monospace;
    font-size: 11px;
}

.log-entry {
    margin-bottom: 5px;
    display: flex;
    gap: 10px;
}

.log-time {
    color: var(--accent-green);
    min-width: 80px;
}

.log-message {
    color: var(--text-secondary);
}

/* Loading Spinner */
.loading-spinner {
    border: 3px solid var(--bg-tertiary);
    border-top: 3px solid var(--accent-blue);
    border-radius: 50%;
    width: 30px;
    height: 30px;
    animation: spin 1s linear infinite;
    margin: 0 auto;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Scrollbar Styling */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--accent-blue);
}