:root{--color-primary: #2563eb;--color-primary-dark: #1d4ed8;--color-sidebar: #1e293b;--color-bg: #f8fafc;--color-card: #ffffff;--color-border: #e5e7eb;--color-border-strong: #cbd5e1;--color-text: #334155;--color-muted: #64748b;--color-heading: #0f172a;--color-success: #16a34a;--color-warning: #d97706;--color-danger: #dc2626;--color-info: #0284c7;--radius-sm: 8px;--radius-md: 12px;--radius-lg: 18px;--shadow-card: 0 10px 24px rgba(15, 23, 42, .06);--sidebar-width: 260px}.app-shell{min-height:100vh;display:grid;grid-template-columns:var(--sidebar-width) 1fr}.sidebar{background:var(--color-sidebar);color:#f8fafc;padding:20px 16px;display:flex;flex-direction:column;gap:18px}.sidebar__brand{padding:8px 10px 18px;border-bottom:1px solid rgba(255,255,255,.12)}.sidebar__title{margin:0;font-size:20px;letter-spacing:.2px}.sidebar__subtitle{margin:6px 0 0;font-size:12px;color:#cbd5e1}.nav{display:flex;flex-direction:column;gap:6px}.nav__link{display:flex;align-items:center;gap:10px;padding:11px 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