/* ==========================================================================
   Larshith CCTV Solutions — Enterprise NOC Design System & Styles
   ========================================================================== */

:root {
    /* Color Palette - Deep Charcoal / Dark Navy Enterprise NOC */
    --bg-color: #080c16;
    --bg-secondary: #0b1120;
    --surface-color: rgba(15, 23, 42, 0.78);
    --surface-solid: #0d1527;
    --surface-elevated: #131e36;
    --surface-hover: #192745;
    --surface-border: rgba(59, 130, 246, 0.14);
    --surface-border-hover: rgba(59, 130, 246, 0.32);
    
    /* Typography Colors */
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    --text-accent: #38bdf8;

    /* Status Color Tokens */
    --success-color: #10b981;
    --success-bg: rgba(16, 185, 129, 0.12);
    --success-border: rgba(16, 185, 129, 0.35);
    --success-glow: rgba(16, 185, 129, 0.25);
    
    --danger-color: #ef4444;
    --danger-bg: rgba(239, 68, 68, 0.12);
    --danger-border: rgba(239, 68, 68, 0.35);
    --danger-glow: rgba(239, 68, 68, 0.25);
    
    --warning-color: #f59e0b;
    --warning-bg: rgba(245, 158, 11, 0.12);
    --warning-border: rgba(245, 158, 11, 0.35);
    --warning-glow: rgba(245, 158, 11, 0.25);
    
    --flapping-color: #a855f7;
    --flapping-bg: rgba(168, 85, 247, 0.12);
    --flapping-border: rgba(168, 85, 247, 0.35);
    --flapping-glow: rgba(168, 85, 247, 0.25);

    --maint-color: #38bdf8;
    --maint-bg: rgba(56, 189, 248, 0.12);
    --maint-border: rgba(56, 189, 248, 0.35);

    /* Primary Accent Tokens */
    --primary-color: #3b82f6;
    --primary-hover: #2563eb;
    --primary-bg: rgba(59, 130, 246, 0.14);
    --primary-glow: rgba(59, 130, 246, 0.35);
    --accent-purple: #8b5cf6;
    --accent-purple-bg: rgba(139, 92, 246, 0.14);
    --accent-cyan: #06b6d4;

    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.25);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.3), 0 2px 4px -1px rgba(0, 0, 0, 0.2);
    --shadow-lg: 0 10px 20px -3px rgba(0, 0, 0, 0.45), 0 4px 6px -2px rgba(0, 0, 0, 0.25);
    --shadow-glow: 0 0 16px rgba(59, 130, 246, 0.18);

    /* Transitions & Radii */
    --transition-fast: 0.18s ease;
    --transition-normal: 0.25s ease;
    --transition-smooth: 0.3s cubic-bezier(0.4, 0, 0.2, 1);

    --radius-sm: 6px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-full: 9999px;
}

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

body {
    background-color: var(--bg-color); 
    color: var(--text-primary); 
    min-height: 100vh;
    background-image:
        radial-gradient(circle at 10% 20%, rgba(59, 130, 246, 0.05) 0%, transparent 40%),
        radial-gradient(circle at 90% 10%, rgba(16, 185, 129, 0.04) 0%, transparent 40%),
        radial-gradient(circle at 50% 80%, rgba(139, 92, 246, 0.03) 0%, transparent 50%);
    background-attachment: fixed;
    overflow-x: hidden;
}

/* ==========================================================================
   Layout Structure
   ========================================================================== */
.app-layout {
    display: flex;
    min-height: 100vh;
    width: 100vw;
    overflow-x: hidden;
}

.main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    height: 100vh;
    overflow-y: auto;
    position: relative;
    background-color: var(--bg-color);
}

.dashboard-container { 
    max-width: 1560px; 
    margin: 0 auto; 
    padding: 1.5rem 2rem 3rem 2rem; 
    width: 100%;
}

/* ==========================================================================
   1. Top Enterprise Header Bar
   ========================================================================== */
.top-nav-bar {
    height: 62px;
    background: rgba(11, 17, 32, 0.92);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border-bottom: 1px solid var(--surface-border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 1.75rem;
    position: sticky;
    top: 0;
    z-index: 100;
    gap: 1.5rem;
}

.top-nav-left {
    display: flex;
    align-items: center;
    gap: 1rem;
    flex: 1;
    max-width: 480px;
}

.top-search-wrap {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    background: rgba(15, 23, 42, 0.7);
    border: 1px solid var(--surface-border);
    border-radius: var(--radius-full);
    padding: 0.4rem 0.9rem;
    width: 100%;
    transition: var(--transition-fast);
}

.top-search-wrap:focus-within {
    border-color: var(--primary-color);
    background: rgba(15, 23, 42, 0.95);
    box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.2);
}

.top-search-wrap svg {
    color: var(--text-muted);
    flex-shrink: 0;
}

.top-search-wrap input {
    background: transparent;
    border: none;
    outline: none;
    color: var(--text-primary);
    font-size: 0.86rem;
    width: 100%;
}

.top-search-wrap input::placeholder {
    color: var(--text-muted);
}

.search-shortcut-badge {
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: var(--radius-sm);
    color: var(--text-muted);
    font-size: 0.68rem;
    font-weight: 600;
    padding: 0.15rem 0.4rem;
    white-space: nowrap;
    letter-spacing: 0.03em;
}

.top-nav-center {
    display: flex;
    align-items: center;
    gap: 1.25rem;
    flex-shrink: 0;
}

.top-status-indicator {
    display: flex;
    align-items: center;
    gap: 0.45rem;
    background: var(--success-bg);
    border: 1px solid var(--success-border);
    padding: 0.3rem 0.75rem;
    border-radius: var(--radius-full);
}

.live-status-dot {
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background-color: var(--success-color);
    box-shadow: 0 0 8px var(--success-color);
    animation: pulse 2s infinite;
}

.live-status-text {
    font-size: 0.72rem;
    font-weight: 700;
    color: var(--success-color);
    letter-spacing: 0.04em;
    text-transform: uppercase;
}

.top-clock {
    font-size: 0.8rem;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 0.45rem;
    font-variant-numeric: tabular-nums;
    font-weight: 500;
}

.clock-separator {
    color: var(--text-muted);
}

.top-nav-right {
    display: flex;
    align-items: center;
    gap: 0.85rem;
    flex-shrink: 0;
}

.top-icon-btn {
    position: relative;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--surface-border);
    color: var(--text-secondary);
    width: 36px;
    height: 36px;
    border-radius: var(--radius-md);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition-fast);
}

.top-icon-btn:hover {
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.09);
    border-color: var(--surface-border-hover);
}

.top-badge {
    position: absolute;
    top: -4px;
    right: -4px;
    background: var(--danger-color);
    color: white;
    font-size: 0.65rem;
    font-weight: 700;
    min-width: 17px;
    height: 17px;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0 3px;
    border: 2px solid var(--surface-solid);
    box-shadow: 0 2px 5px rgba(239, 68, 68, 0.5);
}

.user-profile-pill {
    display: flex;
    align-items: center;
    gap: 0.65rem;
    background: var(--surface-elevated);
    border: 1px solid var(--surface-border);
    padding: 0.25rem 0.65rem 0.25rem 0.35rem;
    border-radius: var(--radius-full);
}

.user-avatar {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: linear-gradient(135deg, #2563eb, #3b82f6);
    color: white;
    font-size: 0.75rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
}

.user-info {
    display: flex;
    flex-direction: column;
    line-height: 1.15;
}

.user-name {
    font-size: 0.78rem;
    font-weight: 600;
    color: var(--text-primary);
}

.user-role {
    font-size: 0.65rem;
    color: var(--text-muted);
}

.icon-btn-ghost {
    background: transparent;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    padding: 0.2rem;
    border-radius: var(--radius-sm);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-fast);
}

.icon-btn-ghost:hover {
    color: var(--danger-color);
}

/* ==========================================================================
   2. Left Sidebar Navigation
   ========================================================================== */
.sidebar {
    width: 240px;
    background: #090e1a;
    border-right: 1px solid var(--surface-border);
    display: flex;
    flex-direction: column;
    transition: width var(--transition-smooth);
    z-index: 90;
    overflow-x: hidden;
    flex-shrink: 0;
}

.sidebar.collapsed {
    width: 68px;
}

.sidebar-header {
    height: 62px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 1.15rem;
    border-bottom: 1px solid var(--surface-border);
}

.logo-small {
    display: flex;
    align-items: center;
    gap: 0.55rem;
    font-weight: 700;
    font-size: 1.05rem;
    color: #f8fafc;
    overflow: hidden;
    white-space: nowrap;
    letter-spacing: -0.01em;
}

.logo-small .logo-icon {
    font-size: 1.25rem;
    filter: drop-shadow(0 0 8px rgba(59, 130, 246, 0.4));
}

.sidebar.collapsed .logo-text {
    display: none;
}

.sidebar-nav {
    list-style: none;
    padding: 0.85rem 0.5rem;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.sidebar-nav li {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.65rem 0.85rem;
    color: var(--text-secondary);
    cursor: pointer;
    border-radius: var(--radius-md);
    transition: var(--transition-fast);
    overflow: hidden;
    white-space: nowrap;
    font-size: 0.86rem;
    font-weight: 500;
}

.sidebar-nav li:hover {
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-primary);
}

.sidebar-nav li.active {
    background: var(--primary-bg);
    color: #60a5fa;
    font-weight: 600;
    border-left: 3px solid var(--primary-color);
}

.nav-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 22px;
    height: 22px;
    flex-shrink: 0;
}

.nav-badge {
    background: rgba(255, 255, 255, 0.08);
    color: var(--text-secondary);
    font-size: 0.7rem;
    font-weight: 600;
    padding: 0.15rem 0.5rem;
    border-radius: var(--radius-full);
    margin-left: auto;
}

.nav-badge.danger {
    background: var(--danger-bg);
    color: var(--danger-color);
    border: 1px solid var(--danger-border);
}

.sidebar.collapsed .nav-text,
.sidebar.collapsed .nav-badge {
    display: none;
}

/* Sidebar Groups Accordion */
.sidebar-section-title {
    padding: 0.85rem 1rem 0.45rem;
    font-size: 0.7rem;
    text-transform: uppercase;
    color: var(--text-muted);
    font-weight: 700;
    letter-spacing: 0.06em;
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    user-select: none;
    transition: color 0.2s;
}

.sidebar-section-title:hover {
    color: var(--text-secondary);
}

.sidebar-groups-list {
    margin-top: 0;
    padding: 0 0.5rem;
    overflow-y: auto;
    overflow-x: hidden;
    max-height: 38vh;
    transition: max-height 0.25s ease;
    scrollbar-width: thin;
    scrollbar-color: var(--surface-border) transparent;
}

.sidebar-groups-list li {
    font-size: 0.82rem;
    padding: 0.55rem 0.75rem;
}

.sidebar-groups-list.collapsed,
.sidebar.collapsed .sidebar-section-title,
.sidebar.collapsed #sidebar-groups-toggle,
.sidebar.collapsed #sidebar-groups-list,
.sidebar.collapsed .sidebar-groups-list {
    display: none !important;
    visibility: hidden !important;
    opacity: 0 !important;
    height: 0 !important;
    max-height: 0 !important;
    padding: 0 !important;
    margin: 0 !important;
    pointer-events: none !important;
    overflow: hidden !important;
}

.sidebar-footer {
    margin-top: auto;
    padding: 0.5rem 0;
    border-top: 1px solid var(--surface-border);
}

/* ==========================================================================
   3. Dashboard Branding Header
   ========================================================================== */
.dashboard-header { 
    display: flex; 
    justify-content: space-between; 
    align-items: center; 
    margin-bottom: 1.25rem; 
    padding-bottom: 1.25rem; 
    border-bottom: 1px solid var(--surface-border); 
    gap: 1rem; 
    flex-wrap: wrap; 
}

.header-left {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.logo { 
    display: flex; 
    align-items: center; 
    gap: 0.75rem; 
}

.company-logo {
    max-height: 52px;
    width: auto;
    object-fit: contain;
    border-radius: var(--radius-sm);
}

.logo h1 { 
    font-size: 1.95rem; 
    font-weight: 800; 
    letter-spacing: -0.02em;
    background: linear-gradient(135deg, #38bdf8 0%, #0284c7 50%, #10b981 100%); 
    -webkit-background-clip: text; 
    -webkit-text-fill-color: transparent; 
    background-clip: text; 
}

.badge-tag { 
    font-size: 0.68rem; 
    font-weight: 700; 
    padding: 0.2rem 0.6rem; 
    background: var(--primary-bg); 
    color: #60a5fa; 
    border: 1px solid rgba(59, 130, 246, 0.35); 
    border-radius: var(--radius-full); 
    text-transform: uppercase; 
    letter-spacing: 0.05em;
}

.subtitle { 
    color: var(--text-secondary); 
    font-size: 0.86rem; 
    font-weight: 400;
}

.header-right { 
    display: flex; 
    flex-direction: column;
    align-items: flex-end; 
    gap: 0.85rem; 
    flex-wrap: wrap; 
}

/* ==========================================================================
   4. Enterprise KPI / Health Cards Row
   ========================================================================== */
.stats { 
    display: flex; 
    gap: 0.5rem; 
    flex-wrap: wrap; 
}

.stat-box { 
    background: var(--surface-color); 
    border: 1px solid var(--surface-border); 
    border-radius: var(--radius-lg); 
    padding: 0.6rem 0.85rem; 
    display: flex; 
    flex-direction: column; 
    align-items: center; 
    backdrop-filter: blur(10px); 
    transition: var(--transition-fast); 
    min-width: 76px; 
    position: relative;
    overflow: hidden;
}

.stat-box::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: rgba(255, 255, 255, 0.1);
    transition: background var(--transition-fast);
}

.stat-box:hover { 
    border-color: var(--surface-border-hover); 
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.stat-value { 
    font-size: 1.35rem; 
    font-weight: 800; 
    letter-spacing: -0.02em;
    line-height: 1.15;
}

.stat-label { 
    font-size: 0.64rem; 
    color: var(--text-muted); 
    text-transform: uppercase; 
    letter-spacing: 0.06em; 
    margin-top: 0.2rem; 
    font-weight: 600;
}

/* Stat Box Status Variants */
.stat-box.grand-total-box::before { background: linear-gradient(90deg, #818cf8, #a855f7); }
.stat-box.grand-total-box .stat-value { color: #c084fc; }

.stat-box.total-box::before { background: #3b82f6; }
.stat-box.total-box .stat-value { color: #60a5fa; }

.stat-box.online::before { background: var(--success-color); }
.stat-box.online .stat-value { color: var(--success-color); }
.stat-box.online:hover { border-color: var(--success-border); }

.stat-box.warning::before { background: var(--warning-color); }
.stat-box.warning .stat-value { color: var(--warning-color); }
.stat-box.warning:hover { border-color: var(--warning-border); }

.stat-box.offline::before { background: var(--danger-color); }
.stat-box.offline .stat-value { color: var(--danger-color); }
.stat-box.offline:hover { border-color: var(--danger-border); }

.stat-box.flapping::before { background: var(--flapping-color); }
.stat-box.flapping .stat-value { color: var(--flapping-color); }

.stat-box.series::before { background: var(--accent-cyan); }
.stat-box.series .stat-value { color: #38bdf8; }

.stat-box.pi-ip::before { background: #94a3b8; }
.stat-box.pi-ip .stat-value { color: #cbd5e1; }

.stat-box.ping::before { background: #10b981; }
.stat-box.ping .stat-value { color: #34d399; }

/* ==========================================================================
   5. Quick Actions Toolbar
   ========================================================================== */
.header-actions { 
    display: flex; 
    align-items: center; 
    gap: 0.5rem; 
    flex-wrap: wrap; 
}

.btn { 
    display: inline-flex; 
    align-items: center; 
    gap: 0.45rem; 
    padding: 0.55rem 0.95rem; 
    border-radius: var(--radius-md); 
    font-weight: 600; 
    font-size: 0.84rem; 
    cursor: pointer; 
    transition: var(--transition-smooth); 
    border: none; 
    outline: none; 
    user-select: none; 
    white-space: nowrap;
}

.btn.primary { 
    background-color: var(--primary-color); 
    color: white; 
    box-shadow: 0 4px 14px 0 rgba(59, 130, 246, 0.35); 
}

.btn.primary:hover { 
    background-color: var(--primary-hover); 
    transform: translateY(-1px); 
    box-shadow: 0 6px 18px 0 rgba(59, 130, 246, 0.45);
}

.btn.secondary { 
    background-color: rgba(255, 255, 255, 0.04); 
    color: var(--text-primary); 
    border: 1px solid var(--surface-border); 
}

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

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

.btn.danger:hover { 
    background-color: #dc2626; 
}

.btn-sm { 
    padding: 0.35rem 0.65rem; 
    font-size: 0.78rem; 
}

.btn-icon-only { 
    padding: 0.55rem 0.75rem; 
}

/* ==========================================================================
   6. System Resource Bar (Hardware Status)
   ========================================================================== */
.pi-health-bar {
    display: flex;
    align-items: center;
    background: var(--surface-color);
    border: 1px solid var(--surface-border);
    border-radius: var(--radius-lg);
    padding: 0.45rem 1.25rem;
    font-size: 0.78rem;
    color: var(--text-secondary);
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 1.25rem;
    backdrop-filter: blur(8px);
}

.health-item {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.15rem 0.65rem;
}

.health-icon { 
    font-size: 0.95rem; 
}

.health-label { 
    color: var(--text-muted); 
    font-size: 0.72rem; 
    text-transform: uppercase; 
    letter-spacing: 0.04em; 
    font-weight: 600;
}

.health-val { 
    font-weight: 700; 
    font-size: 0.82rem; 
    color: var(--text-primary); 
}

.health-val.hot  { color: var(--danger-color); }
.health-val.warm { color: var(--warning-color); }
.health-val.cool { color: var(--success-color); }

.health-divider { 
    width: 1px; 
    height: 1.2rem; 
    background: var(--surface-border); 
    margin: 0 0.15rem; 
}

.health-bar-mini {
    width: 48px; 
    height: 5px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-full); 
    overflow: hidden;
}

.health-bar-fill {
    height: 100%; 
    border-radius: var(--radius-full);
    background: var(--primary-color);
    transition: width 0.5s ease, background 0.3s;
}

/* ==========================================================================
   7. Search, Filter & Sort Toolbar
   ========================================================================== */
.search-bar { 
    display: flex; 
    align-items: center; 
    gap: 0.75rem; 
    background: var(--surface-color); 
    border: 1px solid var(--surface-border); 
    border-radius: var(--radius-lg); 
    padding: 0.55rem 1rem; 
    margin-bottom: 1.25rem; 
    backdrop-filter: blur(10px); 
    transition: var(--transition-fast); 
    flex-wrap: wrap;
}

.search-bar:focus-within { 
    border-color: var(--primary-color); 
    box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.15); 
}

.search-bar svg { 
    color: var(--text-secondary); 
    flex-shrink: 0; 
}

.search-bar input { 
    flex: 1; 
    min-width: 220px;
    background: transparent; 
    border: none; 
    outline: none; 
    color: var(--text-primary); 
    font-size: 0.88rem; 
    padding: 0.35rem 0; 
}

.search-bar input::placeholder { 
    color: var(--text-muted); 
}

.filter-pills { 
    display: flex; 
    gap: 0.35rem; 
    flex-shrink: 0; 
    flex-wrap: wrap; 
}

.pill { 
    background: transparent; 
    border: 1px solid var(--surface-border); 
    color: var(--text-secondary); 
    padding: 0.3rem 0.75rem; 
    border-radius: var(--radius-full); 
    font-size: 0.75rem; 
    font-weight: 500; 
    cursor: pointer; 
    transition: var(--transition-fast); 
}

.pill:hover { 
    border-color: var(--surface-border-hover); 
    color: var(--text-primary); 
    background: rgba(255, 255, 255, 0.03);
}

.pill.active { 
    background: var(--primary-bg); 
    border-color: var(--primary-color); 
    color: #60a5fa; 
    font-weight: 700; 
}

.group-active-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    background: rgba(59, 130, 246, 0.15);
    border: 1px solid rgba(59, 130, 246, 0.4);
    color: #93c5fd;
    padding: 0.25rem 0.65rem;
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 600;
}

.group-active-badge .badge-clear-btn {
    background: transparent;
    border: none;
    color: #93c5fd;
    cursor: pointer;
    font-size: 0.85rem;
    line-height: 1;
    padding: 0;
    margin-left: 0.25rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    transition: color 0.15s ease;
}

.group-active-badge .badge-clear-btn:hover {
    color: #ffffff;
}

.toolbar-controls {
    display: flex;
    align-items: center;
    gap: 0.65rem;
    margin-left: auto;
}

.sort-select {
    background: rgba(0, 0, 0, 0.3);
    border: 1px solid var(--surface-border);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    padding: 0.3rem 0.65rem;
    font-size: 0.75rem;
    font-weight: 500;
    outline: none;
    cursor: pointer;
    transition: var(--transition-fast);
}

.sort-select:hover, .sort-select:focus {
    border-color: var(--primary-color);
    color: var(--text-primary);
}

.view-toggle-btn {
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--surface-border);
    color: var(--text-muted);
    padding: 0.3rem 0.5rem;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: var(--transition-fast);
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

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

.view-toggle-btn.active {
    background: var(--primary-bg);
    border-color: var(--primary-color);
    color: var(--primary-color);
}

/* ==========================================================================
   8. Connection Banner & Live Activities Panel
   ========================================================================== */
.connection-banner { 
    display: none; 
    align-items: center; 
    gap: 0.5rem; 
    background: var(--warning-bg); 
    border: 1px solid var(--warning-border); 
    border-radius: var(--radius-md); 
    padding: 0.65rem 1rem; 
    margin-bottom: 1.25rem; 
    color: var(--warning-color); 
    font-size: 0.85rem; 
    font-weight: 500; 
}

.connection-banner.show { 
    display: flex; 
}

.activity-bar {
    background: var(--surface-color);
    border: 1px solid var(--surface-border);
    border-radius: var(--radius-lg);
    margin-bottom: 1.25rem;
    overflow: hidden;
    backdrop-filter: blur(10px);
}

.activity-bar-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.65rem 1.15rem;
    cursor: pointer;
    user-select: none;
    background: rgba(255, 255, 255, 0.02);
    border-bottom: 1px solid transparent;
    transition: var(--transition-fast);
}

.activity-bar-header:hover {
    background: rgba(255, 255, 255, 0.04);
}

.activity-bar.open .activity-bar-header {
    border-bottom-color: var(--surface-border);
}

.activity-bar-title {
    display: flex;
    align-items: center;
    gap: 0.55rem;
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--text-secondary);
}

.activity-counter {
    font-size: 0.68rem;
    background: rgba(255, 255, 255, 0.08);
    color: var(--text-muted);
    padding: 0.1rem 0.45rem;
    border-radius: var(--radius-full);
}

.activity-chevron {
    font-size: 0.7rem;
    color: var(--text-muted);
    transition: transform 0.2s ease;
}

.activity-bar.open .activity-chevron {
    transform: rotate(180deg);
}

.activity-bar-body {
    max-height: 0;
    overflow-y: auto;
    transition: max-height 0.25s ease;
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
    padding: 0 1.15rem;
}

.activity-bar.open .activity-bar-body {
    max-height: 180px;
    padding: 0.75rem 1.15rem;
}

.activity-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.4rem 0.65rem;
    background: rgba(0, 0, 0, 0.2);
    border-radius: var(--radius-sm);
    font-size: 0.78rem;
}

.activity-item-text {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.activity-item-time {
    color: var(--text-muted);
    font-size: 0.7rem;
    font-variant-numeric: tabular-nums;
}

.activity-empty {
    text-align: center;
    color: var(--text-muted);
    font-size: 0.78rem;
    padding: 0.75rem;
}

/* ==========================================================================
   9. Device Grid & Group Headers
   ========================================================================== */
.grid-container { 
    display: grid; 
    grid-template-columns: repeat(auto-fill, minmax(215px, 1fr)); 
    gap: 0.85rem; 
}

.network-group-header {
    grid-column: 1 / -1; 
    display: flex; 
    align-items: center; 
    justify-content: space-between;
    padding: 0.75rem 1.15rem; 
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.08), rgba(139, 92, 246, 0.06));
    border: 1px solid rgba(59, 130, 246, 0.2); 
    border-radius: var(--radius-lg); 
    margin-top: 0.85rem;
}

.network-group-header:first-child { 
    margin-top: 0; 
}

.network-group-info { 
    display: flex; 
    align-items: center; 
    gap: 0.75rem; 
}

.network-group-icon { 
    width: 32px; 
    height: 32px; 
    border-radius: var(--radius-md); 
    background: var(--primary-bg); 
    display: flex; 
    align-items: center; 
    justify-content: center; 
    color: #60a5fa; 
    font-size: 1.05rem; 
}

.network-group-name { 
    font-weight: 700; 
    font-size: 0.94rem; 
    letter-spacing: -0.01em;
}

.network-group-subnet { 
    font-family: 'Courier New', monospace; 
    font-size: 0.76rem; 
    color: var(--text-muted); 
}

.network-group-stats { 
    display: flex; 
    gap: 0.85rem; 
    font-size: 0.8rem; 
}

.network-group-stats span { 
    display: flex; 
    align-items: center; 
    gap: 0.3rem; 
}

.network-group-stats .online-stat { 
    color: var(--success-color); 
    font-weight: 600; 
}

.network-group-stats .offline-stat { 
    color: var(--danger-color); 
    font-weight: 600; 
}

/* ==========================================================================
   10. Enterprise Device Cards
   ========================================================================== */
.device-card {
    background: var(--surface-color); 
    border: 1px solid var(--surface-border);
    border-radius: var(--radius-lg); 
    padding: 0.8rem; 
    backdrop-filter: blur(12px);
    transition: border-color 0.22s ease, box-shadow 0.22s ease, transform 0.18s ease;
    position: relative; 
    overflow: hidden; 
    display: flex; 
    flex-direction: column;
    justify-content: space-between; 
    min-height: 190px; 
    cursor: pointer;
}

.device-card::before { 
    content: ''; 
    position: absolute; 
    top: 0; 
    left: 0; 
    width: 100%; 
    height: 3px; 
    transition: background 0.3s ease; 
}

.device-card.online::before { background: linear-gradient(90deg, var(--success-color), rgba(16, 185, 129, 0.3)); }
.device-card.warning::before { background: linear-gradient(90deg, var(--warning-color), rgba(245, 158, 11, 0.3)); }
.device-card.offline::before { background: linear-gradient(90deg, var(--danger-color), rgba(239, 68, 68, 0.3)); }
.device-card.flapping::before { background: linear-gradient(90deg, var(--flapping-color), rgba(168, 85, 247, 0.3)); }
.device-card.maintenance::before { background: linear-gradient(90deg, var(--maint-color), rgba(56, 189, 248, 0.3)); }

.device-card:hover { 
    transform: translateY(-2px); 
    box-shadow: var(--shadow-lg); 
    border-color: var(--surface-border-hover); 
}

.device-card.online:hover { box-shadow: var(--shadow-lg), 0 4px 18px var(--success-glow); }
.device-card.warning:hover { box-shadow: var(--shadow-lg), 0 4px 18px var(--warning-glow); }
.device-card.offline:hover { box-shadow: var(--shadow-lg), 0 4px 18px var(--danger-glow); }
.device-card.flapping:hover { box-shadow: var(--shadow-lg), 0 4px 18px var(--flapping-glow); }

.card-header { 
    display: flex; 
    justify-content: space-between; 
    align-items: flex-start; 
    margin-bottom: 0.45rem; 
    gap: 0.4rem;
}

.device-title-wrap { 
    max-width: 68%; 
    overflow: hidden; 
}

.device-name { 
    font-size: 0.84rem; 
    font-weight: 700; 
    margin-bottom: 0.2rem; 
    white-space: nowrap; 
    overflow: hidden; 
    text-overflow: ellipsis; 
    display: flex; 
    align-items: center; 
    gap: 0.3rem; 
}

.device-ip-row { 
    display: flex; 
    align-items: center; 
    gap: 0.35rem; 
    font-family: 'Courier New', monospace; 
    font-size: 0.74rem; 
    color: var(--text-secondary); 
    flex-wrap: wrap; 
}

.protocol-tag { 
    font-size: 0.6rem; 
    padding: 0.08rem 0.32rem; 
    border-radius: var(--radius-sm); 
    background: rgba(255, 255, 255, 0.08); 
    text-transform: uppercase; 
    font-family: 'Inter', sans-serif; 
    font-weight: 700; 
    color: var(--text-secondary); 
}

.device-location { 
    font-size: 0.68rem; 
    color: var(--text-muted); 
    margin-top: 0.15rem; 
    white-space: nowrap; 
    overflow: hidden; 
    text-overflow: ellipsis; 
}

.status-badge { 
    display: inline-flex; 
    align-items: center; 
    gap: 0.25rem; 
    padding: 0.15rem 0.48rem; 
    border-radius: var(--radius-full); 
    font-size: 0.62rem; 
    font-weight: 700; 
    text-transform: uppercase; 
    flex-shrink: 0; 
    letter-spacing: 0.03em;
}

.status-badge .status-dot { 
    width: 5px; 
    height: 5px; 
    border-radius: 50%; 
}

.online .status-badge { background-color: var(--success-bg); color: var(--success-color); border: 1px solid var(--success-border); }
.online .status-badge .status-dot { background-color: var(--success-color); box-shadow: 0 0 6px var(--success-color); }

.warning .status-badge { background-color: var(--warning-bg); color: var(--warning-color); border: 1px solid var(--warning-border); }
.warning .status-badge .status-dot { background-color: var(--warning-color); box-shadow: 0 0 6px var(--warning-color); }

.offline .status-badge { background-color: var(--danger-bg); color: var(--danger-color); border: 1px solid var(--danger-border); }
.offline .status-badge .status-dot { background-color: var(--danger-color); box-shadow: 0 0 6px var(--danger-color); }

.flapping .status-badge { background-color: var(--flapping-bg); color: var(--flapping-color); border: 1px solid var(--flapping-border); }
.flapping .status-badge .status-dot { background-color: var(--flapping-color); box-shadow: 0 0 6px var(--flapping-color); }

.maintenance .status-badge { background-color: var(--maint-bg); color: var(--maint-color); border: 1px solid var(--maint-border); }
.maintenance .status-badge .status-dot { background-color: var(--maint-color); }

.card-metrics { 
    display: flex; 
    justify-content: space-between; 
    gap: 0.3rem; 
    margin-bottom: 0.4rem; 
    background: rgba(0, 0, 0, 0.25); 
    padding: 0.35rem 0.55rem; 
    border-radius: var(--radius-md); 
    border: 1px solid var(--surface-border); 
}

.metric { 
    display: flex; 
    flex-direction: column; 
    gap: 0.05rem; 
}

.metric-value { 
    font-size: 0.8rem; 
    font-weight: 700; 
    white-space: nowrap; 
}

.metric-value.good { color: var(--success-color); }
.metric-value.warn { color: var(--warning-color); }
.metric-value.bad { color: var(--danger-color); }
.metric-label { 
    font-size: 0.58rem; 
    color: var(--text-muted); 
    text-transform: uppercase; 
    letter-spacing: 0.04em; 
    font-weight: 600;
}

.sparkline-container { 
    margin-bottom: 0.25rem; 
    padding: 0; 
    height: 20px; 
}

.sparkline-container svg { 
    width: 100%; 
    height: 18px; 
    overflow: visible; 
}

.card-actions { 
    margin-top: auto; 
    padding-top: 0.45rem; 
    border-top: 1px solid var(--surface-border); 
    display: flex; 
    justify-content: space-between; 
    align-items: center; 
    gap: 0.25rem; 
}

.card-actions .last-seen-text { 
    font-size: 0.65rem; 
    color: var(--text-muted); 
    white-space: nowrap; 
    overflow: hidden; 
    text-overflow: ellipsis; 
    max-width: 55%; 
}

.card-actions-buttons { 
    display: flex; 
    gap: 0.25rem; 
    flex-shrink: 0; 
}

.icon-btn { 
    background: rgba(255, 255, 255, 0.04); 
    border: 1px solid var(--surface-border); 
    color: var(--text-secondary); 
    cursor: pointer; 
    padding: 0.3rem 0.45rem; 
    border-radius: var(--radius-sm); 
    transition: var(--transition-fast); 
    display: inline-flex; 
    align-items: center; 
    justify-content: center; 
}

.icon-btn:hover { 
    color: var(--text-primary); 
    background-color: rgba(255, 255, 255, 0.08); 
    border-color: var(--surface-border-hover); 
}

.icon-btn.ping-btn:hover { 
    color: #60a5fa; 
    background-color: var(--primary-bg); 
    border-color: rgba(59, 130, 246, 0.4); 
}

.icon-btn.delete:hover { 
    color: var(--danger-color); 
    background-color: var(--danger-bg); 
    border-color: rgba(239, 68, 68, 0.4); 
}

/* ==========================================================================
   11. Compact List Mode for Device Grid
   ========================================================================== */
.grid-container.list-mode {
    display: flex;
    flex-direction: column;
    gap: 0.45rem;
}

.grid-container.list-mode .device-card {
    min-height: auto;
    flex-direction: row;
    align-items: center;
    padding: 0.65rem 1.15rem;
    gap: 1.5rem;
}

.grid-container.list-mode .device-card::before {
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
}

.grid-container.list-mode .card-header {
    margin-bottom: 0;
    min-width: 200px;
}

.grid-container.list-mode .card-metrics {
    margin-bottom: 0;
    background: transparent;
    border: none;
    padding: 0;
    gap: 1.5rem;
}

.grid-container.list-mode .sparkline-container {
    display: none;
}

.grid-container.list-mode .card-actions {
    margin-top: 0;
    padding-top: 0;
    border-top: none;
    gap: 1rem;
    margin-left: auto;
}

/* ==========================================================================
   12. Detail & SLA Analytics Modal
   ========================================================================== */
.detail-modal-content { max-width: 680px; width: 95vw; }
.detail-ip-sub { font-family: 'Courier New', monospace; font-size: 0.82rem; color: var(--text-muted); margin-top: 0.15rem; }

.detail-kpi-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0.75rem; margin-bottom: 1.25rem; }
.kpi-card { background: rgba(0, 0, 0, 0.25); border: 1px solid var(--surface-border); border-radius: var(--radius-lg); padding: 0.75rem; text-align: center; }
.kpi-value { font-size: 1.2rem; font-weight: 700; color: #60a5fa; margin-bottom: 0.15rem; }
.kpi-label { font-size: 0.68rem; color: var(--text-muted); text-transform: uppercase; font-weight: 600; }

.chart-section { background: rgba(0, 0, 0, 0.2); border: 1px solid var(--surface-border); border-radius: var(--radius-lg); padding: 1rem; margin-bottom: 1.15rem; }
.chart-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 0.75rem; }
.chart-header h4 { font-size: 0.88rem; font-weight: 600; }
.chart-legend { font-size: 0.72rem; color: var(--text-secondary); }
.chart-canvas-container { height: 130px; position: relative; }
.chart-canvas-container canvas { width: 100% !important; height: 100% !important; }

.detail-maintenance-box { display: flex; justify-content: space-between; align-items: center; background: var(--maint-bg); border: 1px solid var(--maint-border); border-radius: var(--radius-lg); padding: 0.75rem 1rem; margin-bottom: 1.15rem; }
.maintenance-actions { display: flex; gap: 0.4rem; }

.events-section h4 { font-size: 0.88rem; font-weight: 600; margin-bottom: 0.6rem; }
.events-list { max-height: 160px; overflow-y: auto; display: flex; flex-direction: column; gap: 0.45rem; }
.event-item { display: flex; justify-content: space-between; align-items: center; background: rgba(0, 0, 0, 0.25); border: 1px solid var(--surface-border); border-radius: var(--radius-md); padding: 0.5rem 0.75rem; font-size: 0.78rem; }
.event-tag { font-weight: 700; font-size: 0.7rem; padding: 0.1rem 0.4rem; border-radius: var(--radius-sm); text-transform: uppercase; }
.event-tag.online { background: var(--success-bg); color: var(--success-color); }
.event-tag.offline { background: var(--danger-bg); color: var(--danger-color); }
.event-tag.flapping { background: var(--flapping-bg); color: var(--flapping-color); }
.event-tag.maintenance { background: var(--maint-bg); color: var(--maint-color); }
.event-details { color: var(--text-secondary); margin-left: 0.5rem; flex: 1; }
.event-time { color: var(--text-muted); font-size: 0.7rem; }

/* ==========================================================================
   13. Bulk CSV Import Modal
   ========================================================================== */
.csv-drop-zone {
    border: 2px dashed var(--surface-border-hover);
    border-radius: var(--radius-lg);
    padding: 2.2rem 1.5rem;
    text-align: center;
    cursor: pointer;
    transition: border-color 0.2s, background 0.2s;
    display: flex; 
    flex-direction: column; 
    align-items: center;
    color: var(--text-muted);
    background: rgba(0, 0, 0, 0.2);
}

.csv-drop-zone.dragover {
    border-color: var(--primary-color);
    background: rgba(59, 130, 246, 0.08);
}

.csv-file-info {
    display: flex;
    align-items: center;
    gap: 0.65rem;
    background: var(--surface-elevated);
    border: 1px solid var(--surface-border);
    padding: 0.45rem 0.85rem;
    border-radius: var(--radius-md);
    margin-top: 0.75rem;
    font-size: 0.82rem;
    color: var(--text-primary);
}

/* ==========================================================================
   14. Modals, Forms & Toasts
   ========================================================================== */
.modal-backdrop { 
    position: fixed; 
    top: 0; 
    left: 0; 
    width: 100vw; 
    height: 100vh; 
    background-color: rgba(0, 0, 0, 0.72); 
    backdrop-filter: blur(6px); 
    display: flex; 
    justify-content: center; 
    align-items: center; 
    z-index: 1000; 
    opacity: 0; 
    pointer-events: none; 
    transition: var(--transition-normal); 
}

.modal-backdrop.show { 
    opacity: 1; 
    pointer-events: all; 
}

.modal-content { 
    background-color: var(--surface-solid); 
    border: 1px solid var(--surface-border); 
    border-radius: var(--radius-xl); 
    width: 100%; 
    max-width: 480px; 
    padding: 1.85rem; 
    transform: scale(0.95) translateY(10px); 
    transition: var(--transition-smooth); 
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.6); 
    max-height: 90vh; 
    overflow-y: auto; 
}

.modal-backdrop.show .modal-content { 
    transform: scale(1) translateY(0); 
}

.modal-header { 
    display: flex; 
    justify-content: space-between; 
    align-items: center; 
    margin-bottom: 1.35rem; 
}

.modal-header h2, .modal-title { 
    font-size: 1.2rem; 
    font-weight: 700; 
    color: var(--text-primary);
}

.close-btn, .modal-close { 
    background: transparent; 
    border: none; 
    color: var(--text-secondary); 
    font-size: 1.5rem; 
    cursor: pointer; 
    transition: var(--transition-fast); 
    line-height: 1; 
}

.close-btn:hover, .modal-close:hover { 
    color: var(--text-primary); 
}

.confirm-modal-content { text-align: center; max-width: 380px; }
.confirm-icon { color: var(--danger-color); margin-bottom: 1rem; }
.confirm-modal-content h2 { margin-bottom: 0.5rem; font-size: 1.2rem; }
.confirm-message { color: var(--text-secondary); font-size: 0.88rem; margin-bottom: 0.5rem; }
.confirm-modal-content .modal-footer { justify-content: center; }

.form-group { margin-bottom: 1rem; }
.form-group label { display: block; margin-bottom: 0.4rem; font-size: 0.82rem; font-weight: 600; color: var(--text-secondary); }
.form-group input, .form-select { 
    width: 100%; 
    padding: 0.65rem 0.9rem; 
    background-color: rgba(0, 0, 0, 0.3); 
    border: 1px solid var(--surface-border); 
    border-radius: var(--radius-md); 
    color: var(--text-primary); 
    font-size: 0.88rem; 
    transition: var(--transition-fast); 
}

.form-group input:focus, .form-select:focus { 
    outline: none; 
    border-color: var(--primary-color); 
    box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.2); 
}

.form-select option { background-color: var(--surface-solid); color: var(--text-primary); }
.field-hint { display: block; font-size: 0.72rem; color: var(--text-muted); margin-top: 0.25rem; }
.form-row { display: flex; gap: 0.85rem; }
.form-row .form-group { flex: 1; }
.modal-footer { display: flex; justify-content: flex-end; gap: 0.85rem; margin-top: 1.5rem; }

/* Toast Notifications */
.toast-container { position: fixed; top: 1.5rem; right: 1.5rem; z-index: 2000; display: flex; flex-direction: column; gap: 0.75rem; pointer-events: none; }
.toast { display: flex; align-items: center; gap: 0.75rem; padding: 0.85rem 1.25rem; border-radius: var(--radius-lg); background: var(--surface-solid); border: 1px solid var(--surface-border); box-shadow: 0 8px 32px rgba(0, 0, 0, 0.45); min-width: 280px; max-width: 420px; pointer-events: auto; animation: toastSlideIn 0.35s cubic-bezier(0.21, 1.02, 0.73, 1) forwards; font-size: 0.88rem; font-weight: 500; }
.toast.removing { animation: toastSlideOut 0.3s ease forwards; }
.toast-icon { flex-shrink: 0; width: 20px; height: 20px; display: flex; align-items: center; justify-content: center; }
.toast.success { border-left: 3px solid var(--success-color); } .toast.success .toast-icon { color: var(--success-color); }
.toast.error { border-left: 3px solid var(--danger-color); } .toast.error .toast-icon { color: var(--danger-color); }
.toast.warning { border-left: 3px solid var(--warning-color); } .toast.warning .toast-icon { color: var(--warning-color); }
.toast.info { border-left: 3px solid var(--primary-color); } .toast.info .toast-icon { color: #60a5fa; }
.toast-text { flex: 1; color: var(--text-primary); }
.toast-close { background: transparent; border: none; color: var(--text-muted); cursor: pointer; padding: 0.2rem; font-size: 1.1rem; line-height: 1; transition: var(--transition-fast); }
.toast-close:hover { color: var(--text-primary); }

@keyframes toastSlideIn { from { opacity: 0; transform: translateX(100%) scale(0.95); } to { opacity: 1; transform: translateX(0) scale(1); } }
@keyframes toastSlideOut { from { opacity: 1; transform: translateX(0) scale(1); } to { opacity: 0; transform: translateX(100%) scale(0.95); } }

/* Maintenance Dropdown Menu */
.maint-dropdown-wrapper { position: relative; display: inline-block; }
.maint-dropdown-menu {
    display: none;
    position: absolute;
    bottom: 100%;
    right: 0;
    min-width: 180px;
    background: var(--surface-elevated);
    border: 1px solid var(--surface-border);
    border-radius: var(--radius-md);
    padding: 0.35rem;
    z-index: 100;
    box-shadow: 0 8px 24px rgba(0,0,0,0.5);
    margin-bottom: 4px;
}

.maint-dropdown-menu.show { display: flex; flex-direction: column; gap: 2px; }
.maint-dropdown-menu button {
    display: block;
    width: 100%;
    padding: 0.5rem 0.75rem;
    border: none;
    background: transparent;
    color: var(--text-primary);
    font-size: 0.82rem;
    text-align: left;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: background 0.15s;
    white-space: nowrap;
}

.maint-dropdown-menu button:hover { background: rgba(255, 255, 255, 0.08); }
.maint-dropdown-menu button.clear-maint {
    border-top: 1px solid var(--surface-border);
    margin-top: 4px;
    padding-top: 0.6rem;
    color: var(--success-color);
}
.maint-dropdown-menu button.clear-maint:hover { background: rgba(16, 185, 129, 0.1); }

/* RTSP Picture-in-Picture Minimized State */
#rtsp-modal.minimized { background: transparent !important; pointer-events: none !important; }
#rtsp-modal.minimized .modal-content { 
    position: fixed !important; 
    bottom: 20px !important; 
    right: 20px !important; 
    width: 320px !important; 
    min-height: 180px !important; 
    margin: 0 !important; 
    pointer-events: auto !important; 
    box-shadow: 0 10px 25px rgba(0,0,0,0.8) !important; 
    border: 1px solid var(--primary-color) !important; 
    transform: none !important; 
    z-index: 9999 !important; 
}

/* RTSP Modal Fullscreen & Aspect Modes */
#rtsp-modal-content:fullscreen,
#rtsp-modal-content:-webkit-full-screen {
    width: 100vw !important;
    height: 100vh !important;
    max-width: 100vw !important;
    max-height: 100vh !important;
    margin: 0 !important;
    padding: 0 !important;
    border: none !important;
    border-radius: 0 !important;
    background: #000 !important;
    display: flex !important;
    flex-direction: column !important;
    justify-content: center !important;
    align-items: center !important;
}

#rtsp-modal-content:fullscreen .modal-header,
#rtsp-modal-content:-webkit-full-screen .modal-header {
    position: absolute !important;
    top: 0 !important;
    left: 0 !important;
    right: 0 !important;
    z-index: 25 !important;
    background: linear-gradient(to bottom, rgba(0,0,0,0.85) 0%, rgba(0,0,0,0.3) 70%, transparent 100%) !important;
    opacity: 0;
    transition: opacity 0.25s ease;
    padding: 1rem 2rem !important;
}

#rtsp-modal-content:fullscreen:hover .modal-header,
#rtsp-modal-content:-webkit-full-screen:hover .modal-header {
    opacity: 1 !important;
}

#rtsp-modal-content:fullscreen .modal-body,
#rtsp-modal-content:-webkit-full-screen .modal-body {
    flex: 1 1 100% !important;
    width: 100vw !important;
    height: 100vh !important;
    min-height: 100vh !important;
    display: flex !important;
    justify-content: center !important;
    align-items: center !important;
    background: #000 !important;
    padding: 0 !important;
    overflow: hidden !important;
}

#rtsp-modal-content:fullscreen #rtsp-stream-img,
#rtsp-modal-content:-webkit-full-screen #rtsp-stream-img {
    width: 100% !important;
    height: 100% !important;
    max-width: 100vw !important;
    max-height: 100vh !important;
    object-fit: contain;
}

#rtsp-modal-content.fill-mode #rtsp-stream-img,
#rtsp-modal-content.fill-mode:fullscreen #rtsp-stream-img,
#rtsp-modal-content.fill-mode:-webkit-full-screen #rtsp-stream-img {
    object-fit: fill !important;
}

/* Settings Panel */
.settings-overlay { position: fixed; top: 0; left: 0; width: 100vw; height: 100vh; background: rgba(0, 0, 0, 0.7); z-index: 900; opacity: 0; pointer-events: none; transition: opacity 0.3s ease; }
.settings-overlay.show { opacity: 1; pointer-events: all; }
.settings-panel { position: fixed; top: 0; right: 0; width: 560px; max-width: 94vw; height: 100vh; background: var(--surface-solid); border-left: 1px solid var(--surface-border); z-index: 950; transform: translateX(100%); transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1); display: flex; flex-direction: column; overflow: hidden; box-shadow: -10px 0 40px rgba(0, 0, 0, 0.6); }
.settings-panel.show { transform: translateX(0); }
.settings-header { display: flex; justify-content: space-between; align-items: center; padding: 1.35rem 1.5rem 1rem; border-bottom: 1px solid var(--surface-border); }
.settings-header h2 { font-size: 1.25rem; font-weight: 700; }
.settings-subtitle { font-size: 0.78rem; color: var(--text-muted); margin-top: 0.15rem; }
.settings-tabs { display: flex; padding: 0 1.5rem; border-bottom: 1px solid var(--surface-border); }
.settings-tab { display: flex; align-items: center; gap: 0.45rem; padding: 0.8rem 1.15rem; background: transparent; border: none; border-bottom: 2px solid transparent; color: var(--text-secondary); font-size: 0.88rem; font-weight: 600; cursor: pointer; transition: var(--transition-fast); }
.settings-tab:hover { color: var(--text-primary); }
.settings-tab.active { color: #60a5fa; border-bottom-color: var(--primary-color); }
.settings-tab-content { display: none; flex: 1; overflow-y: auto; padding: 1.35rem 1.5rem 2rem; }
.settings-tab-content.active { display: flex; flex-direction: column; }
.settings-section-header { display: flex; justify-content: space-between; align-items: flex-start; margin-bottom: 1.2rem; }
.settings-section-header h3 { font-size: 1rem; font-weight: 600; margin-bottom: 0.2rem; }
.settings-desc { font-size: 0.8rem; color: var(--text-muted); max-width: 320px; line-height: 1.4; }
.settings-list { display: flex; flex-direction: column; gap: 0.75rem; }
.settings-item { display: flex; justify-content: space-between; align-items: center; padding: 0.95rem 1.15rem; background: var(--surface-color); border: 1px solid var(--surface-border); border-radius: var(--radius-lg); transition: var(--transition-fast); }
.settings-item:hover { border-color: var(--surface-border-hover); }
.settings-item-name { font-weight: 600; font-size: 0.92rem; margin-bottom: 0.15rem; }
.settings-item-detail { font-size: 0.8rem; color: var(--text-muted); font-family: 'Courier New', monospace; }
.settings-item-meta { font-size: 0.72rem; color: var(--text-secondary); margin-top: 0.25rem; display: flex; gap: 0.75rem; }
.settings-item-actions { display: flex; gap: 0.3rem; }
.settings-card { background: var(--surface-color); border: 1px solid var(--surface-border); border-radius: var(--radius-lg); padding: 1.25rem; margin-bottom: 1.25rem; }
.settings-card-header { display: flex; align-items: center; gap: 0.85rem; margin-bottom: 1rem; }
.settings-card-header h4 { font-size: 0.95rem; font-weight: 600; }
.settings-card-body { display: flex; flex-direction: column; gap: 0.85rem; }
.toggle-switch { position: relative; display: inline-block; width: 44px; height: 24px; flex-shrink: 0; }
.toggle-switch input { opacity: 0; width: 0; height: 0; }
.toggle-slider { position: absolute; cursor: pointer; top: 0; left: 0; right: 0; bottom: 0; background-color: rgba(255, 255, 255, 0.1); transition: 0.3s; border-radius: 24px; border: 1px solid var(--surface-border); }
.toggle-slider:before { position: absolute; content: ""; height: 16px; width: 16px; left: 3px; bottom: 3px; background-color: white; transition: 0.3s; border-radius: 50%; }
input:checked + .toggle-slider { background-color: var(--primary-color); border-color: var(--primary-color); }
input:checked + .toggle-slider:before { transform: translateX(20px); }
.settings-actions-footer { display: flex; justify-content: space-between; align-items: center; gap: 1rem; margin-top: 1rem; padding-top: 1.25rem; border-top: 1px solid var(--surface-border); }

/* Auto-Discovery Modal */
.discovery-modal-content { max-width: 780px; width: 95vw; }
.discovery-controls { margin-bottom: 1.25rem; }
.scan-progress-box { background: rgba(0, 0, 0, 0.25); border: 1px solid var(--surface-border); border-radius: var(--radius-md); padding: 0.75rem 1rem; margin-top: 0.85rem; }
.progress-info { display: flex; justify-content: space-between; font-size: 0.82rem; margin-bottom: 0.4rem; font-weight: 500; }
.progress-bar-track { height: 8px; background: rgba(255, 255, 255, 0.1); border-radius: var(--radius-full); overflow: hidden; }
.progress-bar-fill { height: 100%; background: linear-gradient(90deg, var(--primary-color), var(--success-color)); width: 0%; transition: width 0.25s ease; }
.discovery-results-box { border-top: 1px solid var(--surface-border); padding-top: 1rem; }
.discovery-results-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 0.75rem; }
.discovery-table-wrap { max-height: 260px; overflow-y: auto; border: 1px solid var(--surface-border); border-radius: var(--radius-md); }
.discovery-table { width: 100%; border-collapse: collapse; font-size: 0.82rem; text-align: left; }
.discovery-table th { background: rgba(0, 0, 0, 0.4); padding: 0.6rem 0.75rem; color: var(--text-muted); font-weight: 600; font-size: 0.72rem; text-transform: uppercase; }
.discovery-table td { padding: 0.6rem 0.75rem; border-top: 1px solid var(--surface-border); }
.vendor-badge { display: inline-block; padding: 0.15rem 0.5rem; border-radius: var(--radius-sm); font-size: 0.72rem; font-weight: 600; background: var(--primary-bg); color: #60a5fa; border: 1px solid rgba(59, 130, 246, 0.3); }

/* Login Screen Overlay */
.login-screen-overlay {
    position: fixed;
    top: 0; left: 0; width: 100vw; height: 100vh;
    background: radial-gradient(circle at 50% 35%, #131d33 0%, #080c16 75%);
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    backdrop-filter: blur(25px);
}
.login-card {
    width: 390px;
    max-width: 90vw;
    background: var(--surface-solid);
    border: 1px solid var(--surface-border);
    border-radius: var(--radius-xl);
    padding: 2.2rem;
    box-shadow: 0 16px 48px rgba(0, 0, 0, 0.6), 0 0 32px rgba(59, 130, 246, 0.15);
}
.login-header { text-align: center; margin-bottom: 1.8rem; }
.login-header .logo { justify-content: center; margin-bottom: 0.5rem; flex-direction: column; gap: 0.2rem; }
.login-header .company-logo { max-height: 90px; width: auto; max-width: 100%; margin: 0 auto 1rem auto; display: block; }
.login-header h1 { font-size: 1.8rem; text-align: center; margin-top: 0; }
.password-input-wrap { position: relative; display: flex; align-items: center; }
.password-input-wrap input { padding-right: 2.5rem; }
.toggle-password-btn { position: absolute; right: 0.5rem; background: transparent; border: none; cursor: pointer; color: var(--text-secondary); padding: 0.3rem; border-radius: var(--radius-sm); font-size: 1rem; }
.login-error-msg { background: rgba(239, 68, 68, 0.15); border: 1px solid rgba(239, 68, 68, 0.3); color: var(--danger-color); padding: 0.65rem 0.8rem; border-radius: var(--radius-md); font-size: 0.82rem; margin-bottom: 1rem; text-align: center; font-weight: 500; }
.btn-block { width: 100%; display: flex; justify-content: center; align-items: center; gap: 0.5rem; padding: 0.75rem 1rem; font-weight: 600; font-size: 0.95rem; }

/* Status Page View */
.status-page-wrapper { padding: 2rem; max-width: 1200px; margin: 0 auto; width: 100%; }
.status-header { text-align: center; margin-bottom: 3rem; }
.status-header h2 { font-size: 2.5rem; margin: 0 0 0.5rem 0; font-weight: 600; color: #f8fafc; }
.status-header p { color: #94a3b8; font-size: 1.1rem; }
.site-group { background: var(--surface-solid); border-radius: 12px; padding: 1.5rem; margin-bottom: 2rem; border: 1px solid var(--surface-border); }
.site-title { font-size: 1.25rem; border-bottom: 1px solid var(--surface-border); padding-bottom: 1rem; margin-top: 0; margin-bottom: 1rem; color: #f8fafc; }
.status-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(250px, 1fr)); gap: 1rem; }
.status-timestamp { text-align: center; color: #64748b; font-size: 0.85rem; margin-top: 3rem; }

/* Powered By Stamp */
.powered-by-stamp {
    position: fixed;
    bottom: 1rem;
    right: 1.5rem;
    font-size: 0.82rem;
    font-weight: 700;
    color: #38bdf8;
    background: rgba(13, 21, 39, 0.9);
    padding: 0.4rem 0.85rem;
    border-radius: var(--radius-full);
    border: 1px solid rgba(56, 189, 248, 0.3);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.4);
    backdrop-filter: blur(10px);
    z-index: 80;
    pointer-events: none;
}

/* Empty State */
.empty-state { grid-column: 1 / -1; text-align: center; padding: 4rem 2rem; color: var(--text-secondary); }
.empty-state-icon { font-size: 3rem; margin-bottom: 1rem; opacity: 0.5; }
.empty-state h3 { font-size: 1.15rem; font-weight: 600; color: var(--text-primary); margin-bottom: 0.4rem; }
.empty-state p { font-size: 0.88rem; max-width: 400px; margin: 0 auto; line-height: 1.4; }

/* Responsive Media Queries */
@media (max-width: 1024px) {
    .top-nav-center { display: none; }
    .dashboard-container { padding: 1.25rem 1.25rem 3rem 1.25rem; }
    .grid-container { grid-template-columns: repeat(auto-fill, minmax(180px, 1fr)); }
}

@media (max-width: 768px) {
    .sidebar { position: fixed; left: 0; top: 0; bottom: 0; transform: translateX(-100%); transition: transform 0.3s ease; }
    .sidebar.mobile-open { transform: translateX(0); }
    .top-nav-bar { padding: 0 1rem; }
    .top-search-wrap { max-width: 200px; }
    .search-shortcut-badge { display: none; }
    .dashboard-header { flex-direction: column; align-items: flex-start; gap: 1rem; }
    .header-right { width: 100%; align-items: flex-start; }
    .grid-container { grid-template-columns: repeat(2, 1fr); }
    .detail-kpi-grid { grid-template-columns: repeat(2, 1fr); }
    .settings-panel { width: 100%; max-width: 100vw; }
}

@media (min-width: 1600px) {
    .grid-container { grid-template-columns: repeat(auto-fill, minmax(230px, 1fr)); }
}

/* ==========================================================================
   Alerts & System Event Log Page Styles
   ========================================================================== */
.alerts-page-wrapper, .import-page-wrapper {
    max-width: 1400px;
    margin: 0 auto;
    padding: 1.5rem 2rem 3rem 2rem;
}

.alerts-header, .import-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--surface-border);
    padding-bottom: 1.25rem;
    margin-bottom: 1.5rem;
}

.alerts-header-left h2, .import-header-left h2 {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--text-primary);
    margin: 0 0 0.25rem 0;
}

.alerts-header-left p, .import-header-left p {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin: 0;
}

.alerts-header-actions, .import-header-actions {
    display: flex;
    gap: 0.75rem;
}

.alerts-metrics-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.alerts-kpi-card {
    background: var(--surface-color);
    border: 1px solid var(--surface-border);
    border-radius: var(--radius-lg);
    padding: 1.1rem 1.25rem;
    position: relative;
    overflow: hidden;
    transition: var(--transition-fast);
}

.alerts-kpi-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    bottom: 0;
    width: 4px;
}

.alerts-kpi-card.danger::before { background: var(--danger-color); }
.alerts-kpi-card.warning::before { background: var(--warning-color); }
.alerts-kpi-card.success::before { background: var(--success-color); }
.alerts-kpi-card.info::before { background: var(--primary-color); }

.alerts-kpi-card .kpi-label {
    font-size: 0.78rem;
    font-weight: 600;
    text-transform: uppercase;
    color: var(--text-muted);
    letter-spacing: 0.04em;
    margin-bottom: 0.35rem;
}

.alerts-kpi-card .kpi-value {
    font-size: 1.85rem;
    font-weight: 700;
    line-height: 1.1;
    color: var(--text-primary);
    font-family: var(--font-mono);
}

.alerts-kpi-card.danger .kpi-value { color: var(--danger-color); }
.alerts-kpi-card.warning .kpi-value { color: var(--warning-color); }
.alerts-kpi-card.success .kpi-value { color: var(--success-color); }
.alerts-kpi-card.info .kpi-value { color: #60a5fa; }

.alerts-kpi-card .kpi-sub {
    font-size: 0.75rem;
    color: var(--text-secondary);
    margin-top: 0.35rem;
}

.alerts-toolbar {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 1rem;
    background: var(--surface-color);
    border: 1px solid var(--surface-border);
    border-radius: var(--radius-lg);
    padding: 0.75rem 1.25rem;
    margin-bottom: 1.5rem;
}

.alerts-search-box {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    background: rgba(0, 0, 0, 0.25);
    border: 1px solid var(--surface-border);
    border-radius: var(--radius-md);
    padding: 0.4rem 0.85rem;
    flex: 1;
    min-width: 260px;
}

.alerts-search-box input {
    background: transparent;
    border: none;
    outline: none;
    color: var(--text-primary);
    font-size: 0.85rem;
    width: 100%;
}

.alerts-tab-group {
    display: flex;
    background: rgba(0, 0, 0, 0.25);
    border-radius: var(--radius-md);
    padding: 2px;
    border: 1px solid var(--surface-border);
}

.alerts-tab {
    background: transparent;
    border: none;
    color: var(--text-muted);
    font-size: 0.78rem;
    font-weight: 600;
    padding: 0.4rem 0.85rem;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: var(--transition-fast);
}

.alerts-tab.active {
    background: var(--primary-color);
    color: #ffffff;
}

.alerts-filter-pills {
    display: flex;
    gap: 0.35rem;
}

.alerts-log-container {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.alert-item-card {
    background: var(--surface-color);
    border: 1px solid var(--surface-border);
    border-radius: var(--radius-md);
    padding: 1rem 1.25rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    transition: var(--transition-fast);
    position: relative;
    overflow: hidden;
}

.alert-item-card::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 4px;
}

.alert-item-card.danger::before { background: var(--danger-color); }
.alert-item-card.warning::before { background: var(--warning-color); }
.alert-item-card.success::before { background: var(--success-color); }
.alert-item-card.flapping::before { background: #a855f7; }

.alert-item-card:hover {
    border-color: var(--surface-border-hover);
    transform: translateY(-1px);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.25);
}

.alert-item-left {
    display: flex;
    align-items: center;
    gap: 1.1rem;
    flex: 1;
}

.alert-item-icon {
    font-size: 1.4rem;
    width: 38px;
    height: 38px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.04);
    border-radius: var(--radius-md);
    flex-shrink: 0;
}

.alert-item-info {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.alert-item-title {
    display: flex;
    align-items: center;
    gap: 0.65rem;
    flex-wrap: wrap;
}

.alert-device-name {
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--text-primary);
}

.alert-device-ip {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    background: rgba(255, 255, 255, 0.05);
    padding: 2px 7px;
    border-radius: 4px;
    color: #93c5fd;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.alert-badge {
    font-size: 0.7rem;
    font-weight: 700;
    padding: 2px 8px;
    border-radius: 12px;
    text-transform: uppercase;
    letter-spacing: 0.03em;
}

.alert-badge.danger { background: rgba(239, 68, 68, 0.15); color: #f87171; border: 1px solid rgba(239, 68, 68, 0.3); }
.alert-badge.warning { background: rgba(245, 158, 11, 0.15); color: #fbbf24; border: 1px solid rgba(245, 158, 11, 0.3); }
.alert-badge.success { background: rgba(16, 185, 129, 0.15); color: #34d399; border: 1px solid rgba(16, 185, 129, 0.3); }
.alert-badge.flapping { background: rgba(168, 85, 247, 0.15); color: #c084fc; border: 1px solid rgba(168, 85, 247, 0.3); }

.alert-item-meta {
    display: flex;
    align-items: center;
    gap: 0.85rem;
    font-size: 0.78rem;
    color: var(--text-muted);
}

.alert-item-meta span {
    display: inline-flex;
    align-items: center;
    gap: 4px;
}

.alert-item-right {
    display: flex;
    align-items: center;
    gap: 1.25rem;
    flex-shrink: 0;
}

.alert-downtime-pill {
    font-size: 0.75rem;
    font-weight: 600;
    color: #f87171;
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.25);
    padding: 4px 10px;
    border-radius: 6px;
    font-family: var(--font-mono);
}

.alert-time-box {
    text-align: right;
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.alert-time-rel {
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--text-primary);
}

.alert-time-exact {
    font-size: 0.72rem;
    color: var(--text-muted);
}

/* ==========================================================================
   Bulk Import Devices Page Styles
   ========================================================================== */
.import-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
}

@media (max-width: 960px) {
    .import-grid { grid-template-columns: 1fr; }
}

.import-card {
    background: var(--surface-color);
    border: 1px solid var(--surface-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.import-card-header {
    background: rgba(255, 255, 255, 0.02);
    border-bottom: 1px solid var(--surface-border);
    padding: 1rem 1.25rem;
}

.import-card-header h3 {
    margin: 0;
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
}

.import-card-body {
    padding: 1.5rem;
}

.page-drop-zone {
    border: 2px dashed rgba(59, 130, 246, 0.4);
    background: rgba(59, 130, 246, 0.03);
    border-radius: var(--radius-lg);
    padding: 2.5rem 1.5rem;
    text-align: center;
    transition: var(--transition-fast);
}

.page-drop-zone.dragover {
    border-color: var(--primary-color);
    background: rgba(59, 130, 246, 0.1);
    transform: scale(1.01);
}

.csv-spec-table-wrap {
    overflow-x: auto;
    border: 1px solid var(--surface-border);
    border-radius: var(--radius-md);
}

.csv-spec-table, .csv-preview-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.8rem;
    text-align: left;
}

.csv-spec-table th, .csv-preview-table th {
    background: rgba(255, 255, 255, 0.04);
    padding: 0.6rem 0.85rem;
    font-weight: 600;
    color: var(--text-secondary);
    border-bottom: 1px solid var(--surface-border);
}

.csv-spec-table td, .csv-preview-table td {
    padding: 0.55rem 0.85rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    color: var(--text-primary);
}

.tag-req {
    background: rgba(239, 68, 68, 0.15);
    color: #f87171;
    font-size: 0.7rem;
    font-weight: 700;
    padding: 2px 6px;
    border-radius: 4px;
}