:root{--bg:#f6f7f9;--text:#17202a;--muted:#667085;--line:#d0d5dd;--card:#fff;--accent:#1f5eff;--danger:#b42318}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font:16px/1.45 system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}header{display:flex;justify-content:space-between;gap:16px;align-items:center;padding:16px 24px;background:#111827;color:white}header a{color:white}header span{display:block;color:#cbd5e1;font-size:13px}main{max-width:1080px;margin:0 auto;padding:24px}.login{max-width:420px;margin:10vh auto;background:var(--card);border:1px solid var(--line);border-radius:14px;padding:24px}.box,.stage,.task{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:18px;margin:16px 0}.task{border-left:5px solid var(--accent)}label{display:block;margin:12px 0;font-weight:600}input,select,textarea,button{font:inherit;width:100%;padding:10px;border:1px solid var(--line);border-radius:10px;background:white}button{background:var(--accent);color:white;border:0;cursor:pointer;font-weight:700}textarea{resize:vertical}.taskform{display:grid;grid-template-columns:220px 1fr 1fr auto;gap:12px;align-items:end}.flash{background:#ecfdf3;border:1px solid #abefc6;color:#067647;padding:12px;border-radius:10px}.error{background:#fef3f2;border:1px solid #fecdca;color:var(--danger);padding:12px;border-radius:10px}a{color:var(--accent)}small{color:var(--muted)}@media(max-width:850px){header{padding:14px 16px}main{padding:16px}.taskform{grid-template-columns:1fr}}