/* Modern Professional Design System - Device Intelligence Admin */
:root {
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --bg-card: rgba(30, 41, 59, 0.7);
    --border-color: rgba(255, 255, 255, 0.08);
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    --accent: #3b82f6;
    --accent-hover: #2563eb;
    --accent-glow: rgba(59, 130, 246, 0.25);
    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;
    --info: #06b6d4;
    --sidebar-width: 260px;
    --header-height: 70px;
    --radius: 12px;
    --transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --font: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

[data-theme="light"] {
    --bg-primary: #f1f5f9;
    --bg-secondary: #ffffff;
    --bg-card: rgba(255, 255, 255, 0.85);
    --border-color: rgba(0, 0, 0, 0.08);
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-muted: #94a3b8;
    --accent: #2563eb;
    --accent-hover: #1d4ed8;
    --accent-glow: rgba(37, 99, 235, 0.15);
}

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

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

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

/* Sidebar */
.sidebar {
    width: var(--sidebar-width);
    background-color: var(--bg-secondary);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0;
    bottom: 0;
    left: 0;
    z-index: 100;
    transition: var(--transition);
}

.sidebar-brand {
    height: var(--header-height);
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 0 24px;
    border-bottom: 1px solid var(--border-color);
}

.brand-icon {
    width: 36px;
    height: 36px;
    background: linear-gradient(135deg, #3b82f6, #8b5cf6);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 700;
    font-size: 18px;
    box-shadow: 0 4px 12px var(--accent-glow);
}

.brand-name {
    font-size: 16px;
    font-weight: 700;
    letter-spacing: -0.3px;
    color: var(--text-primary);
}

.brand-badge {
    font-size: 10px;
    background: var(--accent-glow);
    color: var(--accent);
    padding: 2px 6px;
    border-radius: 4px;
    font-weight: 600;
}

.sidebar-nav {
    flex: 1;
    overflow-y: auto;
    padding: 20px 12px;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.nav-section-title {
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.8px;
    color: var(--text-muted);
    padding: 12px 12px 6px;
    font-weight: 600;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 14px;
    color: var(--text-secondary);
    text-decoration: none;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 500;
    transition: var(--transition);
}

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

.nav-item.active {
    background-color: var(--accent);
    color: #ffffff;
    box-shadow: 0 4px 12px var(--accent-glow);
}

.nav-item svg {
    width: 18px;
    height: 18px;
    opacity: 0.85;
}

.sidebar-footer {
    padding: 16px;
    border-top: 1px solid var(--border-color);
}

/* Main Content Area */
.main-wrapper {
    flex: 1;
    margin-left: var(--sidebar-width);
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

/* Header */
.top-header {
    height: var(--header-height);
    background-color: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 32px;
    position: sticky;
    top: 0;
    z-index: 90;
    backdrop-filter: blur(12px);
}

.header-title-wrap {
    display: flex;
    align-items: center;
    gap: 12px;
}

.header-title {
    font-size: 20px;
    font-weight: 700;
    letter-spacing: -0.4px;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 16px;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    font-size: 14px;
    font-weight: 500;
    border-radius: 8px;
    border: none;
    cursor: pointer;
    text-decoration: none;
    transition: var(--transition);
}

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

.btn-primary:hover {
    background-color: var(--accent-hover);
    box-shadow: 0 4px 12px var(--accent-glow);
}

.btn-secondary {
    background-color: rgba(255, 255, 255, 0.08);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover {
    background-color: rgba(255, 255, 255, 0.12);
}

.btn-sm {
    padding: 6px 12px;
    font-size: 12px;
}

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

/* Content */
.content-body {
    flex: 1;
    padding: 32px;
}

/* Metric Cards */
.metrics-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 20px;
    margin-bottom: 28px;
}

.metric-card {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 24px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    position: relative;
    overflow: hidden;
    transition: var(--transition);
}

.metric-card:hover {
    transform: translateY(-2px);
    border-color: rgba(59, 130, 246, 0.3);
}

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

.metric-title {
    font-size: 13px;
    font-weight: 500;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.metric-icon {
    width: 40px;
    height: 40px;
    border-radius: 10px;
    background: rgba(59, 130, 246, 0.1);
    color: var(--accent);
    display: flex;
    align-items: center;
    justify-content: center;
}

.metric-value {
    font-size: 28px;
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: -0.5px;
}

.metric-footer {
    font-size: 12px;
    color: var(--text-muted);
    display: flex;
    align-items: center;
    gap: 6px;
}

/* Charts Grid */
.charts-grid {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 24px;
    margin-bottom: 28px;
}

.card {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 24px;
    margin-bottom: 24px;
}

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

.card-title {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
}

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

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

th {
    padding: 12px 16px;
    color: var(--text-muted);
    font-weight: 600;
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    border-bottom: 1px solid var(--border-color);
}

td {
    padding: 16px;
    color: var(--text-secondary);
    border-bottom: 1px solid var(--border-color);
}

tr:hover td {
    background-color: rgba(255, 255, 255, 0.02);
    color: var(--text-primary);
}

/* Status Badges */
.badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 4px 10px;
    border-radius: 9999px;
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.3px;
}

.badge-success {
    background-color: rgba(16, 185, 129, 0.15);
    color: #34d399;
}

.badge-warning {
    background-color: rgba(245, 158, 11, 0.15);
    color: #fbbf24;
}

.badge-danger {
    background-color: rgba(239, 68, 68, 0.15);
    color: #f87171;
}

.badge-info {
    background-color: rgba(6, 182, 212, 0.15);
    color: #22d3ee;
}

/* Forms & Inputs */
.form-group {
    margin-bottom: 16px;
}

.form-label {
    display: block;
    font-size: 13px;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 6px;
}

.form-control {
    width: 100%;
    padding: 10px 14px;
    font-size: 14px;
    background-color: rgba(0, 0, 0, 0.2);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-primary);
    transition: var(--transition);
}

.form-control:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-glow);
}

/* Modal */
.modal-backdrop {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(6px);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

.modal-backdrop.show {
    display: flex;
}

.modal-dialog {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    width: 100%;
    max-width: 600px;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.5);
}

.modal-header {
    padding: 20px 24px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.modal-body {
    padding: 24px;
}

.modal-footer {
    padding: 16px 24px;
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: flex-end;
    gap: 12px;
}

/* Map Container */
#map {
    height: 480px;
    border-radius: var(--radius);
    width: 100%;
    border: 1px solid var(--border-color);
}

/* Media Gallery Grid */
.media-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 16px;
}

.media-item {
    background-color: rgba(0, 0, 0, 0.2);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.media-thumb {
    height: 140px;
    object-fit: cover;
    width: 100%;
    background-color: #000;
}

.media-info {
    padding: 12px;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.media-title {
    font-size: 13px;
    font-weight: 500;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.media-meta {
    font-size: 11px;
    color: var(--text-muted);
}

/* Responsive */
@media (max-width: 992px) {
    .sidebar {
        transform: translateX(-100%);
    }
    .sidebar.open {
        transform: translateX(0);
    }
    .main-wrapper {
        margin-left: 0;
    }
    .charts-grid {
        grid-template-columns: 1fr;
    }
}