*,*:before,*:after{box-sizing:border-box}:root{--color-accent: #2563eb;--color-accent-dim: #93c5fd;--color-error: #dc2626;--color-warn: #d97706;--color-border: #e2e8f0;--color-text: #1e293b;--color-muted: #64748b;--color-label: #374151;--color-bg: #f8fafc;--color-sidebar: #f1f5f9;--color-card: #ffffff;--color-card-header: #f8fafc;--color-table-head: #f1f5f9;--color-table-foot: #f8fafc;--color-input-bg: #ffffff;--color-header-bg: #1e293b}html,body{margin:0;padding:0;height:100%;overflow:hidden;font-family:Segoe UI,system-ui,-apple-system,sans-serif;font-size:14px;background:var(--color-bg);color:var(--color-text)}h1,h2,h3{margin:0}.app-header h1{color:#e2e8f0}.app-header .btn-icon{background:#334155;border-color:#475569;color:#e2e8f0}.app-header .btn-icon:hover{background:#475569}::-webkit-scrollbar{width:6px;height:6px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:var(--color-border);border-radius:3px}::-webkit-scrollbar-thumb:hover{background:var(--color-muted)}