:root{--bg-primary:#f9fafb;--bg-card:#fff;--bg-overlay:rgba(255,255,255,.9);--bg-toast:#333;--text-primary:#111827;--text-secondary:#6b7280;--text-muted:#9ca3af;--font-title:24px;--font-body:14px;--font-caption:12px;--color-primary:#4f46e5;--color-error:#dc2626;--border-color:#e5e7eb;--radius-sm:8px;--radius-md:16px;--spacing-xs:8px;--spacing-sm:12px;--spacing-md:16px;--spacing-lg:20px;--spacing-xl:24px;--spacing-2xl:32px}html{color:var(--text-primary);box-sizing:border-box;-webkit-font-smoothing:antialiased;word-break:normal;background:var(--bg-primary);font-size:14px;line-height:1.5;overflow-y:scroll}*{box-sizing:inherit}h1{margin:0}body.rtl{direction:rtl}button{text-transform:none;font:inherit;cursor:pointer;color:inherit;background-color:transparent;border-style:none;padding:0;overflow:visible}.hidden{display:none!important}.loading-mask{z-index:200;background-color:var(--bg-primary);justify-content:center;align-items:center;display:flex;position:fixed;top:0;bottom:0;left:0;right:0}.loading-icon{width:36px;height:36px;color:var(--color-primary);line-height:0;animation:1s linear infinite spin}.loading-mask.loading-overlay{background-color:var(--bg-overlay)}.toast{z-index:9999;align-items:center;gap:var(--spacing-xs);padding:var(--spacing-sm) var(--spacing-md);background:var(--bg-toast);color:#fff;border-radius:var(--radius-sm);font-size:var(--font-body);opacity:0;max-width:90%;transition:top .3s,opacity .3s;display:flex;position:fixed;top:-60px;left:50%;transform:translate(-50%)}.toast.show{opacity:1;top:24px}.toast-icon{color:var(--color-error);flex-shrink:0;display:flex}.toast-message{overflow-wrap:break-word}