:root {
    --primary: #FF6B00;
    --primary-dark: #E65A00;
    --primary-light: #FF8C38;
    --secondary: #0A0A0A;
    --bg-dark: #121212;
    --bg-card: #1E1E1E;
    --bg-card-hover: #2A2A2A;
    --text-primary: #FFFFFF;
    --text-secondary: #B0B0B0;
    --text-muted: #6C6C6C;
    --success: #28C76F;
    --warning: #FF9F43;
    --danger: #EA5455;
    --info: #00CFE8;
    --glass-bg: rgba(255, 255, 255, 0.05);
    --glass-border: rgba(255, 255, 255, 0.1);
    --glass-blur: 12px;
    --sidebar-width: 250px;
    --sidebar-collapsed-width: 0px;
    --topbar-height: 60px;
    --font-heading: 'Poppins', sans-serif;
    --font-body: 'Inter', sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
    --radius: 12px;
    --radius-sm: 8px;
    --shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

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

body {
    font-family: var(--font-body);
    background: var(--bg-dark);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
}

h1, h2, h3, h4, h5, h6 { font-family: var(--font-heading); }
.mono { font-family: var(--font-mono); }

/* App Container */
.app-container {
    display: flex;
    min-height: 100vh;
    transition: all 0.3s ease;
}

/* Sidebar */
.sidebar {
    width: var(--sidebar-width);
    background: var(--secondary);
    border-right: 1px solid var(--glass-border);
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0;
    left: 0;
    height: 100vh;
    z-index: 100;
    transition: transform 0.3s ease;
    overflow-y: auto;
}

.sidebar-header {
    padding: 20px;
    display: flex;
    align-items: center;
    gap: 12px;
    border-bottom: 1px solid var(--glass-border);
}

.sidebar-logo {
    width: 40px;
    height: 40px;
    border-radius: 8px;
    object-fit: cover;
}

.sidebar-title {
    font-size: 16px;
    color: var(--primary);
    font-weight: 700;
}

.sidebar-nav {
    flex: 1;
    padding: 12px 0;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 20px;
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    transition: all 0.2s ease;
    border: none;
    background: none;
    width: 100%;
    cursor: pointer;
}

.nav-item i {
    width: 20px;
    text-align: center;
    font-size: 16px;
}

.nav-item:hover {
    background: var(--glass-bg);
    color: var(--text-primary);
}

.nav-item.active {
    background: linear-gradient(90deg, rgba(255, 107, 0, 0.15), transparent);
    color: var(--primary);
    border-right: 3px solid var(--primary);
}

.sidebar-footer {
    padding: 12px 0;
    border-top: 1px solid var(--glass-border);
}

/* Main Content */
.main-content {
    flex: 1;
    margin-left: var(--sidebar-width);
    transition: margin-left 0.3s ease;
}

.sidebar-collapsed .sidebar {
    transform: translateX(-100%);
}

.sidebar-collapsed .main-content {
    margin-left: 0;
}

/* Top Bar */
.top-bar {
    height: var(--topbar-height);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 24px;
    background: var(--bg-card);
    border-bottom: 1px solid var(--glass-border);
}

.toggle-sidebar {
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 20px;
    cursor: pointer;
    padding: 8px;
    border-radius: var(--radius-sm);
    transition: all 0.2s;
}

.toggle-sidebar:hover {
    background: var(--glass-bg);
    color: var(--primary);
}

.top-bar-right {
    display: flex;
    align-items: center;
    gap: 16px;
}

.admin-greeting {
    font-size: 13px;
    color: var(--text-secondary);
}

/* Content Area */
.content-area {
    padding: 24px;
    animation: fadeSlideUp 0.4s ease;
}

.full-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Glassmorphism Card */
.glass-card {
    background: var(--glass-bg);
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    border: 1px solid var(--glass-border);
    border-radius: var(--radius);
    padding: 20px;
    transition: all 0.3s ease;
}

.glass-card:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(255, 107, 0, 0.3);
}

.glass-card-dark {
    background: var(--bg-card);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius);
    padding: 20px;
    transition: all 0.3s ease;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 22px;
    border-radius: var(--radius-sm);
    font-family: var(--font-body);
    font-size: 14px;
    font-weight: 600;
    border: none;
    cursor: pointer;
    transition: all 0.2s ease;
    text-decoration: none;
}

.btn:hover {
    transform: scale(1.02);
    box-shadow: 0 6px 20px rgba(255, 107, 0, 0.3);
}

.btn:active {
    transform: scale(0.98);
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: white;
}

.btn-secondary {
    background: var(--glass-bg);
    color: var(--text-primary);
    border: 1px solid var(--glass-border);
}

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

.btn-danger {
    background: linear-gradient(135deg, var(--danger), #CC3D3D);
    color: white;
}

.btn-success {
    background: linear-gradient(135deg, var(--success), #1EA85A);
    color: white;
}

.btn-sm {
    padding: 6px 14px;
    font-size: 12px;
}

.btn-lg {
    padding: 14px 30px;
    font-size: 16px;
}

/* Form Elements */
.form-group {
    margin-bottom: 16px;
}

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

.form-input, .form-select {
    width: 100%;
    padding: 10px 14px;
    background: var(--bg-card);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-family: var(--font-body);
    font-size: 14px;
    transition: all 0.2s;
}

.form-input:focus, .form-select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(255, 107, 0, 0.15);
}

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

/* Status Badges */
.badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 3px 10px;
    border-radius: 20px;
    font-size: 11px;
    font-weight: 600;
    text-transform: capitalize;
}

.badge-success { background: rgba(40, 199, 111, 0.15); color: var(--success); }
.badge-warning { background: rgba(255, 159, 67, 0.15); color: var(--warning); }
.badge-danger { background: rgba(234, 84, 85, 0.15); color: var(--danger); }
.badge-info { background: rgba(0, 207, 232, 0.15); color: var(--info); }

/* Grid Layouts */
.metrics-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 16px;
    margin-bottom: 24px;
}

.charts-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 20px;
    margin-bottom: 24px;
}

.users-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 16px;
}

/* Metric Card */
.metric-card {
    position: relative;
    overflow: hidden;
}

.metric-card .metric-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    margin-bottom: 12px;
}

.metric-card .metric-label {
    font-size: 12px;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-weight: 500;
}

.metric-card .metric-value {
    font-family: var(--font-mono);
    font-size: 28px;
    font-weight: 700;
    margin: 4px 0;
}

.metric-card .metric-sub {
    font-size: 12px;
    color: var(--text-secondary);
}

/* User Card */
.user-card {
    cursor: pointer;
}

.user-card .user-avatar {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    font-weight: 700;
    font-family: var(--font-heading);
}

.user-card .user-name {
    font-size: 16px;
    font-weight: 600;
}

.user-card .user-detail {
    font-size: 12px;
    color: var(--text-muted);
}

/* Drag & Drop Zone */
.upload-zone {
    border: 2px dashed var(--glass-border);
    border-radius: var(--radius);
    padding: 60px 40px;
    text-align: center;
    transition: all 0.3s ease;
    cursor: pointer;
}

.upload-zone:hover, .upload-zone.dragging {
    border-color: var(--primary);
    background: rgba(255, 107, 0, 0.05);
}

.upload-zone i {
    font-size: 48px;
    color: var(--primary);
    margin-bottom: 16px;
}

/* Animations */
@keyframes fadeSlideUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

@keyframes countUp {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Skeleton Loader */
.skeleton {
    background: linear-gradient(90deg, var(--bg-card) 25%, rgba(255, 107, 0, 0.1) 50%, var(--bg-card) 75%);
    background-size: 200% 100%;
    animation: pulse 1.5s ease-in-out infinite;
    border-radius: var(--radius-sm);
}

.skeleton-text { height: 14px; margin-bottom: 8px; }
.skeleton-title { height: 22px; width: 60%; margin-bottom: 12px; }
.skeleton-card { height: 120px; }
.skeleton-chart { height: 300px; }

/* Timeline */
.report-timeline {
    display: flex;
    gap: 12px;
    overflow-x: auto;
    padding: 12px 0;
    margin-bottom: 24px;
    scrollbar-width: thin;
    scrollbar-color: var(--primary) transparent;
}

.timeline-item {
    flex-shrink: 0;
    padding: 12px 16px;
    background: var(--bg-card);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all 0.2s;
    min-width: 120px;
    text-align: center;
}

.timeline-item:hover {
    border-color: var(--primary);
}

.timeline-item.active {
    border-color: var(--primary);
    background: rgba(255, 107, 0, 0.1);
}

/* Login Page */
.login-container {
    width: 100%;
    max-width: 420px;
    padding: 20px;
}

.login-card {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: 16px;
    padding: 40px;
}

.login-logo {
    width: 80px;
    height: 80px;
    border-radius: 16px;
    object-fit: cover;
}

.login-glow {
    position: absolute;
    border-radius: 50%;
    pointer-events: none;
}
.login-glow-tl {
    top: -100px; left: -100px;
    width: 300px; height: 300px;
    background: radial-gradient(circle, rgba(255, 107, 0, 0.1), transparent);
}
.login-glow-br {
    bottom: -80px; right: -80px;
    width: 250px; height: 250px;
    background: radial-gradient(circle, rgba(255, 107, 0, 0.08), transparent);
}
@media (max-width: 480px) {
    .login-glow-tl {
        top: -60px; left: -60px;
        width: 180px; height: 180px;
    }
    .login-glow-br {
        bottom: -50px; right: -50px;
        width: 150px; height: 150px;
    }
    .login-container {
        padding: 12px;
    }
    .login-card {
        padding: 24px 20px;
        border-radius: 12px;
    }
    .login-logo {
        width: 60px;
        height: 60px;
    }
    .login-card h2 {
        font-size: 18px;
    }
    .login-card .form-input {
        padding: 10px 12px;
        font-size: 14px;
    }
    .login-card .btn-lg {
        padding: 10px 16px;
        font-size: 14px;
    }
    .login-card .justify-content-between {
        flex-direction: column;
        gap: 8px;
        align-items: center;
    }
}

/* Chart Container */
.chart-container {
    position: relative;
    height: 300px;
    width: 100%;
}

/* Health Score Gauge */
.health-score-container {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 100%;
    min-height: 200px;
}

/* Responsive */
@media (max-width: 768px) {
    body {
        overflow-x: hidden;
    }
    .app-container {
        overflow-x: hidden;
    }
    .sidebar {
        transform: translateX(-100%);
    }
    .sidebar-open .sidebar {
        transform: translateX(0);
        box-shadow: 4px 0 30px rgba(0,0,0,0.6);
    }
    .sidebar-collapsed .sidebar {
        transform: translateX(-100%);
    }
    .main-content {
        margin-left: 0;
    }
    .top-bar {
        position: relative;
        z-index: 101;
    }
    .charts-grid {
        grid-template-columns: 1fr;
    }
    .metrics-grid {
        grid-template-columns: 1fr 1fr;
    }
    .content-area {
        padding: 16px;
        width: 100%;
        max-width: 100%;
        overflow-x: hidden;
    }
}

.sidebar-overlay {
    display: none;
}
@media (max-width: 768px) {
    .sidebar-overlay.visible {
        display: block;
        position: fixed;
        inset: 0;
        background: rgba(0,0,0,0.5);
        z-index: 99;
        backdrop-filter: blur(2px);
    }
}

@media (max-width: 480px) {
    .metrics-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 8px;
    }
    .users-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 8px;
    }
    .admin-greeting {
        font-size: 12px;
    }
    .top-bar {
        padding: 0 12px;
    }
    .toggle-sidebar {
        padding: 6px;
        font-size: 16px;
    }
}

.content-area { width: 100%; max-width: 100%; }
.report-timeline { content-visibility: auto; contain-intrinsic-size: 60px; }
.charts-grid > * { min-width: 0; content-visibility: auto; contain-intrinsic-size: 400px; }
.metrics-grid > * { min-width: 0; }
.users-grid > * { min-width: 0; }