:root{--header-height: 56px;--footer-height: 64px;--color-primary: #4f46e5;--color-primary-dark: #3730a3;--color-text: #111827;--color-text-muted: #6b7280;--color-border: #e5e7eb;--color-bg: #ffffff;--color-bg-secondary: #f9fafb;--radius: 10px;--shadow: 0 1px 3px rgba(0,0,0,.08);--shadow-up: 0 -1px 8px rgba(0,0,0,.08)}[data-theme=dark]{--color-text: #f9fafb;--color-text-muted: #9ca3af;--color-border: #374151;--color-bg: #1f2937;--color-bg-secondary: #111827;--shadow: 0 1px 3px rgba(0,0,0,.4);--shadow-up: 0 -1px 8px rgba(0,0,0,.3)}@media(prefers-color-scheme:dark){:root:not([data-theme=light]){--color-text: #f9fafb;--color-text-muted: #9ca3af;--color-border: #374151;--color-bg: #1f2937;--color-bg-secondary: #111827;--shadow: 0 1px 3px rgba(0,0,0,.4);--shadow-up: 0 -1px 8px rgba(0,0,0,.3)}}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;font-size:16px;line-height:1.6;color:var(--color-text);background:var(--color-bg-secondary);margin:0;-webkit-font-smoothing:antialiased}h1,h2,h3,h4{font-weight:600;line-height:1.3;margin:0 0 .5rem}a{color:var(--color-primary);text-decoration:none}.form-group{display:flex;flex-direction:column;gap:.375rem}.form-group label{font-size:.875rem;font-weight:500;color:var(--color-text)}.form-group input,.form-group textarea,.form-group select{padding:.625rem .875rem;border:1px solid var(--color-border);border-radius:var(--radius);font-size:1rem;font-family:inherit;background:var(--color-bg);color:var(--color-text);outline:none;transition:border-color .15s;-webkit-appearance:none}.form-group input:focus,.form-group textarea:focus,.form-group select:focus{border-color:var(--color-primary);box-shadow:0 0 0 3px #4f46e51a}.form-group textarea{resize:vertical}.form-row{display:grid;grid-template-columns:1fr 1fr;gap:1rem}@media(max-width:480px){.form-row{grid-template-columns:1fr}}.form-error{color:#dc2626;font-size:.875rem;margin:0}.required{color:#dc2626}.btn{display:inline-flex;align-items:center;justify-content:center;gap:.375rem;padding:.625rem 1.25rem;border-radius:var(--radius);font-size:.95rem;font-weight:500;font-family:inherit;cursor:pointer;border:1px solid transparent;text-decoration:none;transition:background .15s,opacity .15s,transform .1s;-webkit-tap-highlight-color:transparent}.btn:active{transform:scale(.97)}.btn:disabled{opacity:.6;cursor:not-allowed}.btn--primary{background:var(--color-primary);color:#fff}.btn--primary:hover:not(:disabled){background:var(--color-primary-dark)}.btn--ghost{background:transparent;border-color:var(--color-border);color:var(--color-text)}.btn--ghost:hover:not(:disabled){background:var(--color-bg-secondary)}.btn--danger{background:#fee2e2;color:#dc2626;border-color:#fca5a5}.btn--danger:hover:not(:disabled){background:#fecaca}.btn--full{width:100%}.btn--sm{padding:.375rem .75rem;font-size:.85rem}.btn--icon{padding:.5rem;width:40px;height:40px;border-radius:50%}*,*:before,*:after{box-sizing:border-box}::-webkit-scrollbar{width:6px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:var(--color-border);border-radius:3px}