*,*:before,*:after{box-sizing:border-box}*{margin:0}:root{--color-bg: #ffffff;--color-surface: #f5f5f5;--color-border: #e0e0e0;--color-primary: #0078d4;--color-primary-hover: #106ebe;--color-text: #1a1a1a;--color-text-muted: #6b6b6b;--color-today: #cce4f7;--color-weekend: #fafafa;--color-out-of-month: #f0f0f0;--color-locked: #fff3cd;--color-error: #d32f2f;--space-xs: 4px;--space-sm: 8px;--space-md: 16px;--space-lg: 24px;--space-xl: 32px;--radius: 4px;--font-size-sm: .8125rem;--font-size-base: 1rem;--font-size-lg: 1.25rem}body{font-family:Segoe UI,system-ui,sans-serif;font-size:var(--font-size-base);color:var(--color-text);background:var(--color-bg);line-height:1.5}button{cursor:pointer;font:inherit}#app{min-height:100vh}