/* Aula Enlaces. Todos los recursos se sirven desde la propia aplicación. */
:root{--ink:#203c38;--muted:#5f706c;--green:#175c50;--green-hover:#10463d;--paper:#fff;--background:#f6f7f3;--line:#dce4df;--soft:#edf4ef;--danger:#9b2f28;--radius:20px}
*{box-sizing:border-box}body{margin:0;min-height:100dvh;display:flex;flex-direction:column;background:var(--background);color:var(--ink);font-family:system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;font-size:16px;line-height:1.6}a{color:var(--green);text-underline-offset:4px}a:hover{color:var(--green-hover)}button,input,select,textarea{font:inherit}button,a,input,textarea,select{-webkit-tap-highlight-color:transparent}:focus-visible{outline:3px solid #d08a1c;outline-offset:4px}button{cursor:pointer}button:disabled{cursor:wait;opacity:.65}h1,h2,p{margin-top:0}h1{font-size:clamp(28px,4vw,38px);line-height:1.18;letter-spacing:-1px;margin-bottom:12px;overflow-wrap:anywhere}h2{font-size:21px;letter-spacing:-.35px;line-height:1.4;margin-bottom:12px}p{margin-bottom:18px}input:not([type=file]):not([type=hidden]),select,textarea{width:100%;min-width:0;border:1px solid #b9c9c0;border-radius:10px;background:#fff;color:var(--ink);padding:12px 14px;min-height:48px}input[readonly]{background:#f7f9f6!important}textarea{resize:vertical}label{display:block;font-weight:600;margin-bottom:8px}nav{display:flex;gap:24px;align-items:center}nav a,.text-button{text-decoration:none;color:var(--muted);font-size:14px;font-weight:600}nav form{margin:0}.text-button{border:0;background:none;padding:10px 0}.site-header{display:flex;align-items:center;justify-content:space-between;gap:20px;width:100%;max-width:1120px;margin:0 auto;padding:22px 32px}.brand{display:flex;align-items:center;gap:12px;text-decoration:none;color:var(--ink);font-size:19px;font-weight:700;line-height:1.3}.brand small{display:block;font-size:12px;font-weight:400;color:var(--muted);margin-top:3px}.brand-icon{display:grid;place-items:center;background:var(--green);color:white;border-radius:13px;width:44px;height:44px;font-size:30px;font-weight:400;flex-shrink:0}.container{width:min(100% - 64px,1056px);margin:32px auto 54px;flex:1}.centered{width:min(100% - 32px,600px);margin:auto;flex:1;display:flex;align-items:center;justify-content:center;padding:36px 0 60px}.card{background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);box-shadow:0 8px 30px #203c3804}.login-card{padding:38px;width:100%;max-width:460px}.intro{color:var(--muted);font-size:17px;margin-bottom:24px}.eyebrow{font-size:11px;letter-spacing:2px;font-weight:750;color:var(--green);margin-bottom:14px}.field{margin-bottom:22px}.button{display:inline-flex;justify-content:center;align-items:center;gap:12px;min-height:48px;padding:12px 22px;border-radius:10px;border:1px solid transparent;background:var(--green);color:#fff;text-decoration:none;font-size:15px;font-weight:650;line-height:1.5;text-align:center}.button:hover{background:var(--green-hover);color:white}.button.secondary{background:white;color:var(--green);border-color:#b9c9c0}.button.secondary:hover{background:var(--soft)}.button.full{width:100%}.button.danger{background:var(--danger)}.help{font-size:13px;line-height:1.65;color:var(--muted);margin:10px 0 0}.login-card>.help{margin-top:24px;border-top:1px solid var(--line);padding-top:20px}.page-heading{display:flex;align-items:center;justify-content:space-between;gap:24px;margin-bottom:22px}.page-heading .intro{margin-bottom:0}.summary{font-size:14px;color:var(--muted);margin:28px 0 16px}.summary span,.meta span{margin:0 6px}.file-list{display:grid;gap:12px}.file-row{display:flex;align-items:center;gap:20px;padding:22px 24px}.file-symbol{width:44px;height:52px;border-radius:10px;background:var(--soft);display:grid;place-items:center;font-size:25px;flex-shrink:0}.file-info{flex:1;min-width:0}.file-info h2{margin-bottom:3px;font-size:18px;overflow-wrap:anywhere}.file-info h2 a{text-decoration:none;color:var(--ink)}.filename{overflow-wrap:anywhere;font-size:13px;color:var(--muted);margin:0 0 8px}.meta{font-size:12px;color:var(--muted);margin:0}.file-actions{display:flex;gap:16px;align-items:center}.badge{display:inline-block;font-size:12px;font-weight:600;line-height:1.5;background:#eaf3ed;color:#205443;border-radius:6px;padding:5px 9px}.badge.expired{background:#fff3df;color:#8a5c0d}.empty{padding:54px 24px;text-align:center;margin-top:32px}.empty p{color:var(--muted)}.large-symbol{width:60px;height:60px;border-radius:18px;background:var(--soft);display:grid;place-items:center;margin:0 auto 22px;color:var(--green);font-size:30px}.back{display:inline-block;font-size:14px;text-decoration:none;margin-bottom:24px}.form-card{max-width:700px;padding:32px;margin:0 auto}.form-step+.form-step{border-top:1px solid var(--line);padding-top:26px;margin-top:26px}.form-step h2{display:flex;gap:12px;align-items:center;margin-bottom:22px}.form-step h2>span{display:grid;place-items:center;width:28px;height:28px;border-radius:50%;background:var(--soft);font-size:13px;color:var(--green)}.file-picker{background:#f8faf7;border:1px dashed #adc2b4;padding:22px;border-radius:12px}.file-picker input{max-width:100%;font-size:14px}.file-picker input::file-selector-button{background:white;border:1px solid #b9c9c0;padding:9px 12px;border-radius:8px;color:var(--green);font:inherit;cursor:pointer;margin-right:12px}.selected-file{overflow-wrap:anywhere;font-size:14px;margin:14px 0 0}.selected-file:empty{display:none}.form-bottom{display:flex;gap:24px;align-items:center;margin-top:28px}.form-bottom a{font-size:14px}.notice{background:var(--soft);border:1px solid var(--line);padding:14px 18px;border-radius:10px;margin:0 0 24px;font-size:14px}.notice.error,.errorlist{background:#fff0ed;color:#8e2e26}.errorlist{font-size:14px;padding:10px 14px 10px 30px;border-radius:8px;margin:10px 0 16px}.share-grid{display:grid;grid-template-columns:1.35fr 1fr;gap:20px}.link-card,.qr-card{padding:30px;min-width:0}.share-grid p{font-size:14px;color:var(--muted)}.step-label{font-size:10px;letter-spacing:2px;font-weight:750;color:var(--muted);display:block;margin-bottom:12px}.copy-row{display:flex;flex-wrap:wrap;gap:10px}.copy-row input{flex:1 1 260px;font-size:13px}.copy-row button{flex:1 1 120px}.link-card label{font-size:13px;margin-top:26px}.copy-status{min-height:24px;margin:8px 0!important;color:var(--green)!important}.subtle-link{font-size:13px}.qr-card .qr{display:block;width:min(100%,220px);height:auto;margin:0 auto 20px;image-rendering:pixelated}.qr-card{text-align:center}.details-bar{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:20px 26px;margin:20px 0}.details-bar strong{font-size:15px}.details-bar p{margin:4px 0 0;color:var(--muted);font-size:13px}.description-text{white-space:pre-wrap;overflow-wrap:anywhere}.danger-link{display:inline-block;font-size:13px;color:var(--danger);margin-top:18px}.download-card{width:100%;max-width:490px;text-align:center;padding:36px}.download-card h1{font-size:29px}.download-card .description-text{font-size:16px;color:var(--muted)}.download-info{display:flex;gap:12px;align-items:center;justify-content:center;font-size:13px;color:var(--muted);margin:20px 0 10px}.download-card .filename{margin-bottom:24px}.download-card .help{margin-top:18px}.progress-box{margin-top:24px}.progress-box label{font-size:14px}progress{width:100%;height:16px;accent-color:var(--green)}footer{width:min(100% - 64px,1056px);margin:0 auto;padding:20px 0;display:flex;justify-content:space-between;gap:12px;border-top:1px solid var(--line);color:var(--muted);font-size:12px}.skip{position:absolute;top:-100px}.skip:focus{top:10px;left:10px;background:white;padding:10px;z-index:2}[hidden]{display:none!important}
@media(max-width:700px){.site-header{padding:18px 20px;align-items:flex-start}.brand{font-size:17px}.brand-icon{width:38px;height:38px;border-radius:11px}nav{gap:14px;flex-wrap:wrap;justify-content:flex-end}nav .account{display:none}.container{width:calc(100% - 32px);margin-top:22px}.page-heading{align-items:flex-start;flex-direction:column;gap:18px}.page-heading>.button{width:100%}.page-heading h1{font-size:30px}.share-grid{grid-template-columns:1fr}.file-row{gap:12px;flex-wrap:wrap;padding:18px}.file-actions{width:100%;justify-content:space-between;padding-top:12px}.file-info h2{font-size:17px}.form-card{padding:24px 20px}.file-picker{padding:16px}.form-bottom{flex-wrap:wrap;gap:20px}.form-bottom .button{width:100%}.details-bar{align-items:flex-start;flex-direction:column;padding:20px}.details-bar .button{width:100%}.login-card,.download-card{padding:28px 24px}.link-card,.qr-card{padding:24px}.centered{padding:24px 0 40px}.download-card h1{font-size:26px}footer{width:calc(100% - 40px);flex-wrap:wrap;font-size:11px}}
body{background:radial-gradient(ellipse at 15% 0%,#e7f3ec 0,transparent 40%),var(--background)}
.card{box-shadow:0 12px 40px #203c3808}
.file-picker{text-align:center;padding:24px;border-width:2px;transition:border-color .15s,background .15s}
.file-picker.dragging{border-color:var(--green);background:#e3f2e8}
.file-picker input{display:block;margin:16px auto 0}
.upload-symbol{width:42px;height:42px;display:grid;place-items:center;border-radius:12px;background:#e2eee6;color:var(--green);margin:0 auto 12px;font-size:25px}
.qr-downloads{display:flex;justify-content:center;gap:10px}
.qr-downloads .button{min-width:100px}
.qr-card .help{font-size:12px;margin-bottom:0}
.replacement-current{border-bottom:1px solid var(--line);padding-bottom:20px;margin-bottom:24px}
.replacement-current h2{margin-bottom:6px}
.replacement-current p{font-size:14px;color:var(--muted);overflow-wrap:anywhere;margin:0}
.upload-form .notice{margin-top:24px}
.details-bar .file-actions{flex-wrap:wrap;justify-content:flex-end}
@media(max-width:700px){.details-bar .file-actions{justify-content:flex-start}}
@media(prefers-reduced-motion:no-preference){.button{transition:background .15s,border-color .15s,transform .15s}.button:hover{transform:translateY(-1px)}.file-row{transition:border-color .15s,box-shadow .15s}.file-row:hover{border-color:#b4cbbd;box-shadow:0 8px 24px #203c380b}}
@media(prefers-reduced-motion:reduce){.file-picker{transition:none}}