/* Retos — feed de objetos y espacios para pintar */
.retos-hero{display:grid;grid-template-columns:minmax(0,1.3fr) minmax(0,1fr);gap:40px;align-items:end;padding:28px 0 22px}
.retos-hero h1{margin:0 0 14px;text-wrap:balance;letter-spacing:-.02em}
.retos-hero p{color:var(--muted);max-width:60ch;line-height:1.6;margin:0}
.retos-actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:20px}
.retos-actions .btn{flex:0 0 auto}
.retos-steps{list-style:none;margin:0;padding:0;display:grid;gap:10px}
.retos-steps li{display:grid;gap:3px;padding:14px 16px;border:1px solid var(--line);border-radius:16px;background:var(--soft)}
.retos-steps b{font-size:14px}
.retos-steps span{font-size:13px;color:var(--muted)}
.retos-note{font-size:13px;color:var(--brand-ink);background:var(--accent-soft);border-radius:12px;padding:10px 14px;margin:0 0 14px}
.retos-filters{display:flex;gap:8px;overflow-x:auto;padding:4px 0 16px;scrollbar-width:none}
.retos-filters::-webkit-scrollbar{display:none}
.retos-filters .chip{flex:none;white-space:nowrap;background:white;cursor:pointer}
.retos-filters .chip.active{background:var(--ink);color:white}
.retos-grid{columns:4 260px;column-gap:16px}
.reto-card{all:unset;box-sizing:border-box;display:block;break-inside:avoid;margin:0 0 16px;width:100%;cursor:pointer;border-radius:20px;overflow:hidden;background:white;border:1px solid var(--line);transition:transform .25s,box-shadow .25s}
.reto-card:hover{transform:translateY(-3px);box-shadow:0 14px 30px #271a1314}
.reto-card:focus-visible{outline:2px solid var(--brand);outline-offset:3px}
.reto-media{position:relative}
.reto-media img{display:block;width:100%;height:auto;max-height:420px;object-fit:cover}
.reto-ph{aspect-ratio:4/5;background:var(--tone,#ffe3cc);display:flex;align-items:flex-end;padding:18px;box-sizing:border-box}
.reto-ph span{font:400 clamp(26px,3vw,36px)/1 "Anton","Arial Narrow",Impact,sans-serif;text-transform:uppercase;color:#271a13;letter-spacing:.01em}
.reto-badge{position:absolute;top:12px;left:12px;font:400 11px/1 "DM Mono",ui-monospace,monospace;letter-spacing:.06em;text-transform:uppercase;padding:7px 10px;border-radius:999px;background:rgba(255,255,255,.82);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);color:#271a13}
.reto-badge.new{background:var(--brand);color:#141615}
.reto-badge.done{background:#271a13;color:white}
.reto-dc{position:absolute;bottom:12px;left:12px;font-size:11px;font-weight:700;padding:6px 10px;border-radius:999px;background:#271a13;color:white}
.reto-body{display:grid;gap:4px;padding:14px 16px 16px}
.reto-body b{font-size:16px;line-height:1.25}
.reto-body small{font-size:13px;color:var(--muted)}
.reto-meta{display:flex;flex-wrap:wrap;gap:6px;margin:6px 0 2px}
.reto-meta span{font-size:12px;padding:4px 9px;border-radius:999px;background:var(--soft);border:1px solid var(--line)}
.reto-who{font-size:12px!important}
.retos-empty{display:grid;gap:6px;justify-items:center;text-align:center;padding:50px 20px;border:1px dashed var(--line);border-radius:20px;color:var(--muted)}
.retos-empty b{color:var(--ink);font-size:18px}
.retos-how{display:grid;gap:10px;padding-left:20px;line-height:1.55}

/* Detalle y formularios */
.reto-detail{display:grid;gap:22px}
.reto-detail-media img{width:100%;max-height:52vh;object-fit:cover;border-radius:16px;display:block}
.reto-detail-media .reto-ph{aspect-ratio:16/9;border-radius:16px}
.reto-detail-info h2{margin:0 0 10px}
.reto-detail-info>p{color:var(--muted);line-height:1.6}
.reto-facts{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;margin:16px 0}
.reto-facts div{background:var(--soft);border-radius:12px;padding:10px 12px}
.reto-facts dt{font-size:11px;text-transform:uppercase;letter-spacing:.08em;color:var(--muted)}
.reto-facts dd{margin:3px 0 0;font-weight:700}
.reto-offer,.reto-form{display:grid;gap:14px}
.reto-offer h3{margin:8px 0 0}
.reto-offer label,.reto-form label{display:grid;gap:6px;font-size:13px;font-weight:700}
.reto-offer input,.reto-offer select,.reto-offer textarea,.reto-form input,.reto-form select,.reto-form textarea{font:inherit;font-weight:400;border:1px solid var(--line);border-radius:11px;padding:11px 12px;background:white;min-width:0}
.reto-split{display:grid;gap:6px;padding:14px;border-radius:14px;background:var(--soft);border:1px solid var(--line);font-size:14px}
.reto-split div{display:flex;justify-content:space-between;gap:10px}
.reto-split .you{font-size:17px;border-top:1px dashed var(--line);padding-top:8px;color:var(--accent)}
.reto-split span{color:var(--muted)}
.reto-upload{cursor:pointer;display:grid!important;place-items:center;min-height:150px;border:1.5px dashed var(--line);border-radius:16px;background:var(--soft);text-align:center;padding:14px;color:var(--muted);overflow:hidden}
.reto-upload:hover{border-color:var(--brand)}
.reto-upload img{max-height:240px;width:100%;object-fit:contain;border-radius:10px}
@media (max-width:760px){.retos-hero{grid-template-columns:1fr;gap:20px;padding-top:14px}.retos-grid{columns:2 150px;column-gap:10px}.reto-card{margin-bottom:10px;border-radius:16px}.reto-body{padding:10px 12px 12px}.reto-body b{font-size:14px}.reto-meta span:nth-child(2){display:none}.reto-facts{grid-template-columns:1fr 1fr}}
@media (prefers-reduced-motion:reduce){.reto-card{transition:none}}
.google-btn{display:flex;gap:10px;align-items:center;justify-content:center;background:#fff;color:#271a13;border:1px solid var(--line);text-decoration:none;font-weight:700}
.google-btn:hover{border-color:#271a13}