*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}:root{--primary: #3b82f6;--primary-light: #60a5fa;--primary-dark: #2563eb;--primary-glow: rgba(59, 130, 246, .15);--bg-base: #f0f4f8;--bg-surface: #f8fafc;--bg-card: #ffffff;--bg-elevated: #f1f5f9;--bg-hover: #e8f0fe;--text-primary: #0f172a;--text-secondary: #475569;--text-muted: #94a3b8;--text-inverse: #ffffff;--border: rgba(0,0,0,.08);--border-strong: rgba(0,0,0,.14);--border-accent: rgba(59,130,246,.4);--status-draft: #94a3b8;--status-sent: #3b82f6;--status-viewed: #a855f7;--status-signed: #22c55e;--status-rejected:#ef4444;--status-valid: #10b981;--status-invalid: #f59e0b;--status-expired: #6b7280;--shadow-sm: 0 1px 3px rgba(0,0,0,.08);--shadow-md: 0 4px 20px rgba(0,0,0,.08);--shadow-lg: 0 8px 40px rgba(0,0,0,.1);--shadow-glow: 0 0 30px rgba(59,130,246,.1);--radius-sm: 6px;--radius-md: 10px;--radius-lg: 16px;--radius-xl: 24px;--radius-full: 9999px;--sidebar-width: 260px;--topbar-height: 64px;--transition: .2s 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