:root {
    /* Color Palette - Industrial / High-Tech Utility */
    --primary: #00f2ff;
    --primary-dim: #008c95;
    --bg-dark: #0a0c10;
    --bg-card: #151921;
    --bg-input: #1c232d;
    --text-main: #e0e6ed;
    --text-dim: #94a3b8;
    --border: #2d3748;
    --accent-gold: #fbbf24;
    --accent-red: #ef4444;
    --accent-green: #22c55e;
    
    /* Spacing & Radii */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 16px;
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2.5rem;
    
    /* Shadows & Effects */
    --shadow-neon: 0 0 15px rgba(0, 242, 255, 0.15);
    --glass: rgba(21, 25, 33, 0.8);
    --border-glow: 1px solid rgba(0, 242, 255, 0.2);
}

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

body {
    font-family: 'JetBrains Mono', 'IBM Plex Mono', monospace;
    background-color: var(--bg-dark);
    color: var(--text-main);
    line-height: 1.6;
    overflow-x: hidden;
}

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

.sidebar {
    width: 280px;
    background: var(--bg-card);
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    padding: var(--spacing-md);
    position: sticky;
    top: 0;
    height: 100vh;
}

.main-content {
    flex: 1;
    padding: var(--spacing-lg);
    max-width: calc(100vw - 280px);
}

/* Typography */
h1, h2, h3 {
    font-weight: 700;
    letter-spacing: -0.02em;
    text-transform: uppercase;
}

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

/* Components */
.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 1.25rem;
    font-weight: 800;
    color: var(--primary);
    margin-bottom: var(--spacing-lg);
}

.nav-links {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    border-radius: var(--radius-sm);
    text-decoration: none;
    color: var(--text-dim);
    transition: all 0.2s ease;
    border: 1px solid transparent;
}

.nav-item:hover, .nav-item.active {
    background: rgba(0, 242, 255, 0.05);
    color: var(--primary);
    border-color: rgba(0, 242, 255, 0.2);
}

/* Dashboard Header */
.dashboard-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    margin-bottom: var(--spacing-lg);
}

.user-profile {
    display: flex;
    align-items: center;
    gap: 12px;
}

/* Cards & Grids */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.stat-card {
    background: var(--bg-card);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    border: 1px solid var(--border);
    position: relative;
    overflow: hidden;
}

.stat-card::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 2px;
    height: 100%;
    background: var(--primary);
}

.stat-value {
    font-size: 2rem;
    font-weight: 700;
    margin-top: 4px;
}

.stat-label {
    font-size: 0.75rem;
    color: var(--text-dim);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* Tables */
.data-table-container {
    background: var(--bg-card);
    border-radius: var(--radius-md);
    border: 1px solid var(--border);
    overflow: hidden;
}

.table-header {
    padding: var(--spacing-md);
    border-bottom: 1px solid var(--border);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

table {
    width: 100%;
    border-collapse: collapse;
}

th {
    text-align: left;
    padding: 16px;
    font-size: 0.75rem;
    text-transform: uppercase;
    color: var(--text-dim);
    border-bottom: 1px solid var(--border);
    background: rgba(255, 255, 255, 0.02);
}

td {
    padding: 16px;
    border-bottom: 1px solid var(--border);
    font-size: 0.875rem;
}

tr:hover td {
    background: rgba(255, 255, 255, 0.02);
}

/* Badges */
.badge {
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
}

.badge-pending { background: rgba(251, 191, 36, 0.1); color: var(--accent-gold); border: 1px solid rgba(251, 191, 36, 0.2); }
.badge-completed { background: rgba(34, 197, 94, 0.1); color: var(--accent-green); border: 1px solid rgba(34, 197, 94, 0.2); }
.badge-urgent { background: rgba(239, 68, 68, 0.1); color: var(--accent-red); border: 1px solid rgba(239, 68, 68, 0.2); }

/* Buttons */
.btn {
    padding: 10px 20px;
    border-radius: var(--radius-sm);
    font-family: inherit;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    border: none;
}

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

.btn-primary:hover {
    box-shadow: var(--shadow-neon);
    transform: translateY(-1px);
}

.btn-outline {
    background: transparent;
    border: 1px solid var(--border);
    color: var(--text-main);
}

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

/* Placeholder Utility */
.placeholder-avatar {
    width: 40px;
    height: 40px;
    background: var(--bg-input);
    border-radius: 50%;
    border: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: center;
}

/* AI Highlight Box */
.ai-insight {
    background: linear-gradient(135deg, rgba(0, 242, 255, 0.05) 0%, rgba(0, 140, 149, 0.05) 100%);
    border: 1px solid rgba(0, 242, 255, 0.2);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    margin-top: var(--spacing-md);
}

.ai-header {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--primary);
    margin-bottom: 12px;
}

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

.label {
    display: block;
    font-size: 0.75rem;
    text-transform: uppercase;
    color: var(--text-dim);
    margin-bottom: 6px;
}

.input {
    width: 100%;
    background: var(--bg-input);
    border: 1px solid var(--border);
    padding: 12px;
    color: var(--text-main);
    font-family: inherit;
    border-radius: var(--radius-sm);
}

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