:root {
    /* Modern, neutral palette */
    --bg-base: #f7f9fa;
    --bg-surface: #ffffff;
    --bg-sidebar: #1e2329;
    --text-primary: #111820;
    --text-secondary: #5e6a75;
    --text-sidebar: #cfd6df;
    --border-color: #e4e8eb;

    --primary-color: #006ce6;
    --primary-hover: #0056ba;
    --danger-color: #d12e2e;

    /* Compact design tokens - Small fonts, small radii */
    --border-radius-sm: 2px;
    --border-radius-md: 4px;
    --font-size-xs: 11px;
    --font-size-sm: 12px;
    --font-size-base: 13px;
    /* Smaller base font */
    --font-size-lg: 16px;
    --font-size-xl: 20px;

    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 12px;
    --spacing-lg: 16px;
    --spacing-xl: 24px;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen-Sans, Ubuntu, Cantarell, "Helvetica Neue", sans-serif;
    font-size: var(--font-size-base);
    color: var(--text-primary);
    background-color: var(--bg-base);
    display: flex;
    height: 100vh;
    overflow: hidden;
}

/* Sidebar Styling */
#sidebar {
    width: 240px;
    background-color: var(--bg-sidebar);
    color: var(--text-sidebar);
    display: flex;
    flex-direction: column;
    border-right: 1px solid #111418;
    transition: transform 0.3s ease;
}

#sidebar.hidden {
    display: none;
}

.sidebar-header {
    padding: var(--spacing-lg);
}

.sidebar-logo {
    color: #fff;
    font-size: var(--font-size-lg);
    font-weight: 600;
    letter-spacing: 0.5px;
    width: 70%;
}

/* 1. Sidebar Scrollbar Styling to match background */
.nav-menu::-webkit-scrollbar {
    width: 6px;
}

.nav-menu::-webkit-scrollbar-track {
    background: var(--bg-sidebar);
}

.nav-menu::-webkit-scrollbar-thumb {
    background: #3a4149;
    /* Slightly lighter than sidebar bg */
    border-radius: 10px;
}

.nav-menu::-webkit-scrollbar-thumb:hover {
    background: #4a525d;
}

/* 2. Fix Sidebar Layout for Scrolling */
#sidebar {
    height: 100vh;
    display: flex;
    flex-direction: column;
}

.nav-menu {
    flex-grow: 1;
    overflow-y: auto;
    /* Enable scroll */
    scrollbar-width: thin;
    scrollbar-color: #3a4149 var(--bg-sidebar);
}

/* 3. Sidebar Footer Styling */
.sidebar-footer {
    padding: var(--spacing-md) var(--spacing-lg);
    background-color: rgba(0, 0, 0, 0.3);
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    font-family: monospace;
}

.system-clock {
    color: var(--text-sidebar);
    line-height: 1.4;
}

#clock-time {
    font-size: 16px;
    font-weight: bold;
    color: #fff;
    letter-spacing: 1px;
}

#clock-date {
    font-size: 11px;
    color: #8c97a3;
}

#clock-day {
    font-size: 11px;
    color: var(--primary-color);
    font-weight: 600;
}

/* 4. Connectivity Indicator Styles */
.status-indicator {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 8px;
    font-size: 10px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background-color: #555;
}

.online .status-dot {
    background-color: #28a745;
    box-shadow: 0 0 8px #28a745;
}

.offline .status-dot {
    background-color: var(--danger-color);
    box-shadow: 0 0 8px var(--danger-color);
}

.online .status-text {
    color: #28a745;
}

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

.system-clock-date-day {
    display: flex;
    gap: 10px;
    justify-content: space-between;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen-Sans, Ubuntu, Cantarell, "Helvetica Neue", sans-serif;
}

.user-info {
    padding: var(--spacing-md) var(--spacing-lg);
    background-color: rgba(0, 0, 0, 0.2);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.user-details {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.user-actions {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 4px;
}

.text-bold {
    font-weight: 600;
    color: #fff;
}

.text-small {
    font-size: var(--font-size-xs);
}

.text-muted {
    color: #8c97a3;
}

.role-badge {
    background: rgba(255, 255, 255, 0.1);
    padding: 2px 6px;
    border-radius: var(--border-radius-sm);
    font-size: 10px;
    text-transform: uppercase;
}

.nav-menu {
    flex-grow: 1;
    overflow-y: auto;
    padding: var(--spacing-md) 0;
}

.nav-menu ul {
    list-style: none;
}

.nav-section-title {
    padding: var(--spacing-sm) var(--spacing-lg);
    font-size: 10px;
    text-transform: uppercase;
    color: #8c97a3;
    margin-top: var(--spacing-md);
    letter-spacing: 0.5px;
}

.nav-item a {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-lg);
    color: var(--text-sidebar);
    text-decoration: none;
    transition: background 0.2s, color 0.2s;
}

.nav-item a:hover,
.nav-item a.active {
    background-color: rgba(255, 255, 255, 0.05);
    color: #fff;
}

.nav-item a .material-symbols-outlined {
    font-size: 18px;
    /* Slightly smaller icons */
}

/* Main Content Area */
#main-content {
    flex-grow: 1;
    overflow-y: auto;
    padding: var(--spacing-xl);
    position: relative;
}

#app-root {
    max-width: 1200px;
    margin: 0 auto;
}

/* Typography & Layouts */
h1,
h2,
h3,
h4 {
    color: var(--text-primary);
    font-weight: 600;
    margin-bottom: var(--spacing-md);
}

.page-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-sm);
    border-bottom: none !important;
}

.card {
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-md);
    /* Sharp, modern corners */
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.02);
}

/* Compact Forms */
.form-group {
    margin-bottom: var(--spacing-md);
}

.form-group label {
    display: block;
    font-size: var(--font-size-sm);
    font-weight: 500;
    margin-bottom: 4px;
    color: var(--text-secondary);
}

.form-control {
    width: 100%;
    padding: 6px var(--spacing-sm);
    font-size: var(--font-size-base);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-md);
    background-color: var(--bg-surface);
    transition: border-color 0.2s;
    font-family: inherit;
}

.form-control:focus {
    outline: none;
    border-color: var(--primary-color);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    font-size: var(--font-size-base);
    font-weight: 500;
    border-radius: var(--border-radius-md);
    border: 1px solid transparent;
    cursor: pointer;
    transition: all 0.2s;
}

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

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

.btn-secondary {
    background-color: var(--bg-surface);
    border-color: var(--border-color);
    color: var(--text-primary);
}

.btn-secondary:hover {
    background-color: var(--bg-base);
}

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

.btn-icon {
    background: none;
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    padding: 4px;
    border-radius: var(--border-radius-sm);
}

.btn-icon:hover {
    background-color: rgba(0, 0, 0, 0.05);
}

/* Utilities */
.text-danger {
    color: var(--danger-color);
}

.hidden {
    display: none !important;
}

/* Loaders */
.loading-screen {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 50vh;
    color: var(--text-secondary);
}

.spin {
    animation: spin 1s linear infinite;
    font-size: 24px;
    margin-bottom: 8px;
}

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

/* Mini Sidebar Core Styling */
#mini-sidebar {
    width: 56px;
    background-color: var(--bg-sidebar);
    border-right: 1px solid #111418;
    display: flex;
    flex-direction: column;
    z-index: 99;
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative; /* Relative to the flex container (body) */
}

/* Hidden state: Slide it left so it's behind the main sidebar */
#mini-sidebar.mini-bar-hidden {
    transform: translateX(-100%);
    width: 0;
    border: none;
}

.mini-nav-content {
    flex-grow: 1;
    overflow-y: auto;
    scrollbar-width: thin;
    scrollbar-color: #3a4149 var(--bg-sidebar);
}

/* Mini Sidebar Scrollbar */
.mini-nav-content::-webkit-scrollbar {
    width: 4px;
}
.mini-nav-content::-webkit-scrollbar-track {
    background: var(--bg-sidebar);
}
.mini-nav-content::-webkit-scrollbar-thumb {
    background: #3a4149;
    border-radius: 10px;
}

.mini-nav-item a {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 12px 0;
    color: var(--text-sidebar);
    text-decoration: none;
    transition: all 0.2s;
}

.mini-nav-item a:hover {
    background-color: rgba(255,255,255,0.05);
    color: #fff;
}

.mini-nav-item a.active {
    background-color: rgba(255,255,255,0.08);
    color: #fff;
}

.mini-nav-item span {
    font-size: 20px;
}

/* Ensure the main sidebar button looks right */
#mini-bar-toggle:hover {
    background-color: rgba(255,255,255,0.1);
    color: #fff !important;
}

#active-tab-count {
    font-weight: bold;
    color: var(--primary-color);
    background: rgba(0, 108, 230, 0.1);
    padding: 0 4px;
    border-radius: 3px;
    margin-right: 2px;
}

.status-active-data {
    display: flex;
    justify-content: space-between;
    align-items: center;
    align-content: center;
    gap: 10px;
}