body {
    font-family: var(--font-body);
    font-size: var(--text-base);
    line-height: 1.5;
    color: var(--color-gray-700);
    background-color: var(--color-gray-50);
    display: flex;
    min-height: 100vh;
}
/* Sidebar Persistent Navigation */
.sidebar-nav {
    width: 220px;
    background: var(--color-gray-900);
    color: var(--color-gray-300);
    position: fixed;
    left: 0;
    top: 0;
    bottom: 0;
    display: flex;
    flex-direction: column;
    z-index: 1000;
    box-shadow: var(--shadow-lg);
}

.sidebar-header {
    padding: var(--space-16) var(--space-8);
    border-bottom: 1px solid var(--color-gray-800);
}

.brand {
    font-family: var(--font-display);
    font-size: var(--text-2xl);
    font-weight: 400;
    color: var(--color-primary);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.sidebar-menu {
    flex: 1;
    padding: var(--space-8) 0;
    overflow-y: auto;
}

.nav-item {
    display: flex;
    align-items: center;
    padding: var(--space-8) var(--space-12);
    color: var(--color-gray-400);
    transition: all var(--transition-base);
    border-left: 3px solid transparent;
    gap: var(--space-8);
}

.nav-item:hover {
    background: var(--color-gray-800);
    color: var(--color-white);
    border-left-color: var(--color-primary);
}

.nav-item.active {
    background: var(--color-gray-800);
    color: var(--color-white);
    border-left-color: var(--color-primary);
}

.nav-icon {
    font-size: var(--text-xl);
}

.nav-label {
    font-weight: 400;
    font-size: var(--text-sm);
}

.sidebar-footer {
    padding: var(--space-12) var(--space-8);
    border-top: 1px solid var(--color-gray-800);
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
}

/* Main Content Area */
.main-content {
    margin-left: 220px;
    flex: 1;
    overflow-x: hidden;
}

/* Interactive Canvas Hero */
.canvas-hero {
    position: relative;
    height: 500px;
    overflow: hidden;
    background: linear-gradient(135deg, var(--color-secondary) 0%, var(--color-gray-900) 100%);
}

#heroCanvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.hero-overlay {
    position: relative;
    z-index: 10;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 0, 0, 0.3);
}

.hero-inner {
    text-align: center;
    color: var(--color-white);
    max-width: 800px;
    padding: 0 var(--space-16);
}

.hero-inner h1 {
    font-family: var(--font-display);
    font-size: var(--text-6xl);
    font-weight: 400;
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: var(--space-8);
    line-height: 1.1;
}

.hero-lead {
    font-size: var(--text-xl);
    margin-bottom: var(--space-16);
    opacity: 0.95;
}

.hero-actions {
    display: flex;
    gap: var(--space-8);
    justify-content: center;
}

/* Stats Dashboard */
.stats-dashboard {
    padding: var(--space-16) var(--space-16);
    background: var(--color-white);
    border-bottom: 2px solid var(--color-gray-200);
}

.dashboard-container {
    max-width: 1400px;
    margin: 0 auto;
}

.stats-dashboard .dashboard-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--space-8);
}

.stat-widget {
    background: var(--color-gray-50);
    padding: var(--space-12);
    border-radius: var(--radius-lg);
    border-left: 4px solid var(--color-primary);
}

.widget-header {
    font-size: var(--text-sm);
    font-weight: 400;
    color: var(--color-gray-600);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: var(--space-4);
}

.widget-value {
    font-family: var(--font-display);
    font-size: var(--text-4xl);
    font-weight: 400;
    color: var(--color-primary);
    margin-bottom: var(--space-2);
}

.widget-trend {
    font-size: var(--text-xs);
    color: var(--color-gray-500);
}

/* Materials Dashboard */
.materials-dashboard {
    padding: var(--space-20) var(--space-16);
    background: var(--color-gray-50);
}

.section-head {
    margin-bottom: var(--space-16);
}

.section-head h2 {
    font-family: var(--font-display);
    font-size: var(--text-5xl);
    font-weight: 400;
    color: var(--color-gray-900);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: var(--space-4);
}

.section-head p {
    font-size: var(--text-lg);
    color: var(--color-gray-600);
}

.dashboard-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--space-8);
}

.dash-card {
    background: var(--color-white);
    padding: var(--space-12);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-gray-200);
    transition: all var(--transition-base);
}

.dash-card:hover {
    border-color: var(--color-primary);
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.card-top {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: var(--space-8);
}

.card-icon-badge {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    color: var(--color-white);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--text-2xl);
}

.card-meta-info {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
    align-items: flex-end;
}

.meta-badge {
    background: var(--color-gray-100);
    color: var(--color-gray-700);
    padding: var(--space-2) var(--space-4);
    border-radius: var(--radius-sm);
    font-size: var(--text-xs);
    font-weight: 400;
}

.dash-card h3 {
    font-family: var(--font-display);
    font-size: var(--text-xl);
    font-weight: 400;
    color: var(--color-gray-900);
    text-transform: uppercase;
    margin-bottom: var(--space-4);
}

.dash-card p {
    font-size: var(--text-sm);
    color: var(--color-gray-600);
    line-height: 1.6;
}

/* Platform Dashboard */
.platform-dashboard {
    padding: var(--space-20) var(--space-16);
    background: var(--color-white);
}

.features-dashboard {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--space-12);
}

.feature-widget {
    padding: var(--space-12);
    background: var(--color-gray-50);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-gray-200);
}

.widget-icon {
    font-size: var(--text-4xl);
    margin-bottom: var(--space-8);
}

.feature-widget h3 {
    font-family: var(--font-display);
    font-size: var(--text-lg);
    font-weight: 400;
    color: var(--color-gray-900);
    text-transform: uppercase;
    margin-bottom: var(--space-4);
}

.feature-widget p {
    font-size: var(--text-sm);
    color: var(--color-gray-600);
    line-height: 1.6;
}

/* Responsive */
@media (max-width: 1024px) {
    .sidebar-nav {
        width: 180px;
    }

    .main-content {
        margin-left: 180px;
    }

    .dashboard-grid,
    .features-dashboard {
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    }
}

@media (max-width: 768px) {
    .sidebar-nav {
        width: 100%;
        position: relative;
        height: auto;
    }

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

    body {
        flex-direction: column;
    }

    .sidebar-menu {
        display: flex;
        flex-direction: row;
        overflow-x: auto;
        padding: var(--space-4) var(--space-8);
    }

    .nav-item {
        flex-direction: column;
        padding: var(--space-4);
        border-left: none;
        border-bottom: 3px solid transparent;
        min-width: 80px;
    }

    .nav-item:hover,
    .nav-item.active {
        border-left: none;
        border-bottom-color: var(--color-primary);
    }

    .hero-inner h1 {
        font-size: var(--text-4xl);
    }

    .stats-dashboard .dashboard-container {
        grid-template-columns: 1fr;
    }

    .dashboard-grid,
    .features-dashboard {
        grid-template-columns: 1fr;
    }
}