:root{--bg:#f8fafc;--card:rgba(255,255,255,.82);--text:#0f172a;--muted:#64748b;--border:#e2e8f0;--shadow:0 18px 45px rgba(15,23,42,.16);--shadowSoft:0 6px 18px rgba(15,23,42,.06);--primary:#0ea5e9;--success:#10b981;--danger:#ef4444}*{box-sizing:border-box}html,body{height:100%}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,system-ui,sans-serif;background:var(--bg);color:var(--text)}a{color:inherit}button,input,textarea{font-family:inherit}::-webkit-scrollbar{width:10px;height:10px}::-webkit-scrollbar-thumb{background:#94a3b88c;border-radius:999px;border:2px solid rgba(255,255,255,.6)}::-webkit-scrollbar-track{background:transparent}.auth-bg{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:28px 16px;position:relative;overflow:hidden}.auth-bg:before{content:"";position:absolute;top:-30%;right:-30%;bottom:-30%;left:-30%;background:radial-gradient(circle at 20% 20%,rgba(14,165,233,.2),transparent 45%),radial-gradient(circle at 80% 30%,rgba(16,185,129,.18),transparent 46%),radial-gradient(circle at 55% 80%,rgba(99,102,241,.16),transparent 45%);filter:blur(10px);animation:float 9s ease-in-out infinite alternate}@keyframes float{0%{transform:translate3d(-18px,-10px,0) scale(1)}to{transform:translate3d(18px,10px,0) scale(1.04)}}.auth-shell{width:min(980px,100%);display:grid;grid-template-columns:1.1fr .9fr;gap:18px;position:relative;z-index:1}@media (max-width:900px){.auth-shell{grid-template-columns:1fr}}.hero{border:1px solid var(--border);border-radius:22px;background:#ffffff59;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);padding:26px 22px;box-shadow:var(--shadowSoft)}.hero h1{margin:0 0 10px;font-size:34px;letter-spacing:-.02em}.hero p{margin:0;color:var(--muted);line-height:1.45;font-size:14px}.pills{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}.pill{font-size:12px;padding:6px 10px;border-radius:999px;border:1px solid var(--border);background:#ffffffa6}.card{border:1px solid var(--border);border-radius:22px;background:var(--card);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);box-shadow:var(--shadow);padding:18px}.card h2{margin:0 0 6px;font-size:16px}.card .sub{margin:0 0 14px;color:var(--muted);font-size:12px}.field{display:flex;flex-direction:column;gap:6px;margin-bottom:10px}.label{font-size:11px;color:#334155;font-weight:600}.input{border:1px solid #cbd5e1;border-radius:12px;padding:10px 12px;font-size:13px;background:#fffc;outline:none}.input:focus{border-color:#0ea5e9b3;box-shadow:0 0 0 4px #0ea5e91f}.textarea{min-height:88px;resize:none}.row{display:flex;gap:10px}.row>*{flex:1}.btn{border:none;border-radius:999px;padding:10px 14px;font-size:12px;font-weight:700;cursor:pointer;display:inline-flex;align-items:center;justify-content:center;gap:8px}.btn-primary{background:var(--primary);color:#fff}.btn-primary:hover{filter:brightness(.96)}.btn-success{background:var(--success);color:#fff}.btn-ghost{background:transparent;border:1px solid var(--border);color:#0f172a}.btn-ghost:hover{background:#fff9}.btn-danger{background:var(--danger);color:#fff}.small-link{font-size:12px;color:var(--muted);text-decoration:none}.small-link:hover{color:#334155}.error{border:1px solid rgba(239,68,68,.35);background:#ef444414;color:#991b1b;border-radius:14px;padding:10px 12px;font-size:12px;margin-bottom:12px}.app-root{min-height:100vh;display:flex}.sidebar{width:260px;background:#ffffffd9;border-right:1px solid var(--border);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);padding:14px;display:flex;flex-direction:column;gap:12px}@media (max-width:900px){.app-root{flex-direction:column}.sidebar{width:100%;border-right:none;border-bottom:1px solid var(--border)}}.sidebar h3{margin:0;font-size:16px}.sidebar p{margin:0;font-size:12px;color:var(--muted)}.project-btn{width:100%;text-align:left;border:1px solid var(--border);background:#fff;border-radius:12px;padding:10px;font-size:12px;cursor:pointer}.project-btn.active{border-color:#0ea5e9b3;background:#0ea5e91a}.icon-btn{border:none;background:transparent;cursor:pointer;padding:8px;border-radius:10px;color:#94a3b8}.icon-btn:hover{background:#94a3b824;color:#0f172a}.topbar{flex:1;display:flex;flex-direction:column;min-width:0}.header{padding:14px 18px;border-bottom:1px solid var(--border);background:#ffffffd9;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);display:flex;align-items:center;justify-content:space-between;gap:10px}.header-title h2{margin:0;font-size:20px;letter-spacing:-.02em}.header-title p{margin:0;font-size:12px;color:var(--muted)}.boards{flex:1;padding:14px;overflow-x:auto}.board-row{display:flex;gap:12px;align-items:flex-start;min-width:max-content}.board{width:280px;height:calc(100vh - 140px);display:flex;flex-direction:column;border:1px solid var(--border);border-radius:20px;background:#fff;box-shadow:var(--shadowSoft);overflow:hidden}@media (max-width:900px){.board{width:92vw;height:auto}.board-row{min-width:100%}}.board-head{padding:12px 12px 10px;border-bottom:1px solid var(--border);display:flex;align-items:center;justify-content:space-between;gap:8px}.board-head strong{font-size:13px}.board-body{padding:10px;overflow-y:auto;display:flex;flex-direction:column;gap:10px;min-height:60px}.task{border:1px solid rgba(226,232,240,1);border-radius:18px;padding:12px;box-shadow:0 3px 10px #0f172a0f;cursor:grab}.task h4{margin:0 0 6px;font-size:13px}.task p{margin:0;font-size:12px;color:#475569;white-space:pre-wrap}.task-meta{margin-top:10px;display:flex;align-items:center;justify-content:space-between;font-size:10px;color:var(--muted)}.add-card{width:280px;height:calc(100vh - 140px);border:1px dashed #cbd5e1;border-radius:20px;background:#f8fafcb3;display:flex;align-items:center;justify-content:center}.linklike{background:transparent;border:none;padding:0;cursor:pointer;text-align:left;color:inherit}.linklike:hover h2{text-decoration:underline}.board-title{font-weight:800;font-size:13px}.board-body{padding:12px;display:flex;flex-direction:column;flex:1;overflow:hidden}.task-list{display:flex;flex-direction:column;gap:10px;overflow:auto;padding-right:4px}.empty{font-size:12px;color:var(--muted);text-align:center;padding:18px 10px}.task-top{display:flex;align-items:flex-start;justify-content:space-between;gap:10px}.task-title{font-weight:800;font-size:13px;line-height:1.2}.task-desc{font-size:12px;color:#334155;white-space:pre-wrap;margin-top:6px}.task-meta{display:flex;justify-content:space-between;gap:10px;font-size:11px;color:var(--muted);margin-top:10px}