*{box-sizing:border-box}
:root{
  --bg:#0f1220; --panel:#171a2b; --panel-2:#1f2440; --text:#e8eaf6; --muted:#b9bfd3;
  --accent:#7c5cff; --accent-2:#23d5ab; --danger:#ff4d6d; --ok:#2ecc71; --border: #2a2f4a;
  --shadow: rgba(0,0,0,.2);
  --radius: 16px;
}
html,body{margin:0;padding:0;background:linear-gradient(180deg,#0f1220,#121530);color:var(--text);font-family:Inter,system-ui,Segoe UI,Roboto,Arial,sans-serif;min-height:100%}
.container{max-width:980px;margin:0 auto;padding:16px}
header{padding-top:24px}
h1{font-size:2.2rem;margin:0 0 4px;font-weight:800;letter-spacing:.3px}
.subtitle{color:var(--muted);margin:0 0 20px}
.accent{background:linear-gradient(90deg,var(--accent),var(--accent-2));-webkit-background-clip:text;background-clip:text;color:transparent}
.card{background:linear-gradient(180deg,var(--panel),var(--panel-2));border:1px solid var(--border);box-shadow:0 8px 24px var(--shadow);padding:16px;border-radius:var(--radius);margin-bottom:16px}
.row{display:flex;flex-direction:column;gap:8px;margin-bottom:12px}
.grid-3{display:grid;grid-template-columns:1fr 1fr auto;gap:12px;align-items:end}
.grid-4{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:12px}
label{font-size:.9rem;color:var(--muted)}
input,select,textarea{width:100%;padding:10px 12px;border-radius:12px;border:1px solid var(--border);background:#121632;color:var(--text);outline:none}
textarea{resize:vertical}
.btn{border:none;padding:10px 14px;border-radius:12px;background:#2a2f4a;color:var(--text);cursor:pointer;transition:transform .05s ease,filter .2s ease}
.btn:hover{filter:brightness(1.1)}
.btn:active{transform:translateY(1px)}
.btn.primary{background:linear-gradient(90deg,var(--accent),var(--accent-2));color:#0b0d18;font-weight:700}
.btn.danger{background:linear-gradient(90deg,#ff4d6d,#ff6b6b);color:#0b0d18;font-weight:700}
.file-btn{display:inline-flex;align-items:center;gap:8px;cursor:pointer}
.new-task h2,.filters h2,.list h2{margin:0 0 12px;font-size:1.2rem}
.list-head{display:flex;justify-content:space-between;align-items:center;gap:12px;margin-bottom:8px}
.head-actions{display:flex;gap:8px;flex-wrap:wrap}
.tasks{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:10px}
.task{display:grid;grid-template-columns:auto 1fr auto;gap:12px;align-items:center;padding:12px;border:1px solid var(--border);border-radius:12px;background:#141836}
.task-title{font-weight:700}
.task-notes{color:var(--muted);font-size:.92rem;margin-top:2px}
.badges{display:flex;gap:6px;flex-wrap:wrap}
.badge{font-size:.75rem;padding:4px 8px;border-radius:999px;border:1px solid var(--border);background:#101428;color:var(--muted)}
.badge.alta{border-color:#ff758f;color:#ffb3c1}
.badge.media{border-color:#ffd166;color:#ffe29a}
.badge.baja{border-color:#7bd389;color:#b7ffcf}
.actions-row{display:flex;gap:6px}
.toggle{width:22px;height:22px;border-radius:6px;border:1px solid var(--border);display:grid;place-items:center;background:#0e1230;cursor:pointer}
.toggle.done{background:linear-gradient(135deg,var(--ok),#74d69b)}
.toggle svg{width:16px;height:16px;opacity:.9}
.task.editing{outline:2px dashed var(--accent);outline-offset:2px}
.empty{text-align:center;color:var(--muted);padding:16px}
.footer{opacity:.75;text-align:center;padding-bottom:28px}
@media(max-width:760px){
  .grid-3{grid-template-columns:1fr;align-items:stretch}
  .grid-4{grid-template-columns:1fr;gap:10px}
  .actions{display:flex;gap:8px}
}