/* Layout: banda negra de cabecera como villanueva.edu; debajo, lista de alumnos | cuestionario | recomendación fija. Botones cuadrados amarillos, viñetas en chevrón. */
:root {
  --bg: #ffffff;
  --surface: #f4f4f4;
  --surface-2: #eceef4;
  --fg: #0f0e0e;
  --muted: #566077;
  --line: #dcdfeb;
  --band: #0f0e0e;
  --band-fg: #ffffff;
  --band-muted: #b9bfcd;
  --accent: #ffbc00;
  --accent-fg: #0f0e0e;
  --link: #3940d3;
  --good: #1f7a4d;
  --warn: #9a5b00;
  --bad: #b3261e;
  --focus: #5058ff;
  --font: "Public Sans", "Akkurat LL", Arial, sans-serif;
  --mono: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #121214; --surface: #1c1d21; --surface-2: #24262c; --fg: #f3f3f5; --muted: #a7aec0; --line: #33363f;
    --band: #050505; --band-fg: #ffffff; --band-muted: #a7aec0; --accent: #ffbc00; --accent-fg: #0f0e0e;
    --link: #8f95ff; --good: #5fd39a; --warn: #f2b84b; --bad: #ff8a80; --focus: #8f95ff; color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --bg: #121214; --surface: #1c1d21; --surface-2: #24262c; --fg: #f3f3f5; --muted: #a7aec0; --line: #33363f;
  --band: #050505; --band-fg: #ffffff; --band-muted: #a7aec0; --accent: #ffbc00; --accent-fg: #0f0e0e;
  --link: #8f95ff; --good: #5fd39a; --warn: #f2b84b; --bad: #ff8a80; --focus: #8f95ff; color-scheme: dark;
}
* { box-sizing: border-box; }
body { background: var(--bg); color: var(--fg); font-family: var(--font); font-size: 15px; line-height: 1.5; }
.wrap { max-width: 1440px; margin: 0 auto; padding-left: max(16px, env(safe-area-inset-left, 0px)); padding-right: max(16px, env(safe-area-inset-right, 0px)); }
h1, h2, h3 { text-wrap: balance; margin: 0; line-height: 1.15; }
button, input, select, textarea { font: inherit; color: inherit; }
:focus-visible { outline: 3px solid var(--focus); outline-offset: 2px; }

/* Banda superior */
.band { background: var(--band); color: var(--band-fg); }
.band .wrap { padding-block: 28px 30px; display: flex; flex-wrap: wrap; gap: 20px 40px; align-items: flex-end; justify-content: space-between; }
.eyebrow { font-size: 13px; font-weight: 700; letter-spacing: .06em; text-transform: uppercase; color: var(--accent); }
.band h1 { font-size: clamp(28px, 4vw, 40px); font-weight: 800; margin-top: 6px; }
.band p { margin: 8px 0 0; color: var(--band-muted); max-width: 60ch; }
.band-actions { display: flex; flex-wrap: wrap; gap: 10px; }

.btn { display: inline-flex; align-items: center; gap: 10px; border: 0; border-radius: 0; cursor: pointer; font-weight: 700; padding: 12px 18px 12px 22px; background: var(--accent); color: var(--accent-fg); text-decoration: none; }
.btn:hover { filter: brightness(1.06); }
.btn .chev { width: 14px; height: 14px; flex: none; }
.btn.ghost { background: transparent; color: inherit; box-shadow: inset 0 0 0 1.5px currentColor; }
.btn.small { padding: 8px 12px 8px 14px; font-size: 14px; }
.btn[disabled] { opacity: .45; cursor: not-allowed; }
.btn.danger { background: transparent; color: var(--bad); box-shadow: inset 0 0 0 1.5px var(--bad); }

/* Rejilla principal */
.main { display: grid; grid-template-columns: 250px minmax(0, 1fr) 380px; gap: 28px; padding-block: 28px 60px; align-items: start; }
@media (max-width: 1180px) { .main { grid-template-columns: 230px minmax(0, 1fr); } .reco { grid-column: 2; grid-row: 1; position: static !important; max-height: none !important; } .form-col { grid-column: 2; } .side { grid-row: 1 / span 2; } }
@media (max-width: 760px) { .main { grid-template-columns: minmax(0, 1fr); } .side, .reco, .form-col { grid-column: 1; grid-row: auto; } }

/* Lista de alumnos */
.side { position: sticky; top: 16px; display: flex; flex-direction: column; gap: 12px; }
@media (max-width: 760px) { .side { position: static; } }
.side h2 { font-size: 13px; text-transform: uppercase; letter-spacing: .06em; color: var(--muted); }
.search { width: 100%; padding: 10px 12px; border: 1.5px solid var(--line); background: var(--bg); border-radius: 0; }
.list { display: flex; flex-direction: column; border-top: 1px solid var(--line); max-height: 60vh; overflow: auto; }
@media (max-width: 760px) { .list { max-height: 240px; } }
.item { all: unset; cursor: pointer; display: grid; gap: 2px; padding: 10px 10px 10px 12px; border-bottom: 1px solid var(--line); }
.item:hover { background: var(--surface); }
.item[aria-current="true"] { background: var(--surface-2); box-shadow: inset 4px 0 0 var(--accent); }
.item .n { font-weight: 700; }
.item .l { font-size: 13px; color: var(--muted); }
.tag { display: inline-block; font-size: 11px; font-weight: 700; letter-spacing: .04em; text-transform: uppercase; padding: 2px 6px; background: var(--surface-2); color: var(--muted); }
.store-state { font-size: 12px; color: var(--muted); }

/* Cuestionario */
.form-col { display: flex; flex-direction: column; gap: 22px; min-width: 0; }
.student-head { display: flex; flex-wrap: wrap; gap: 12px 20px; align-items: flex-end; justify-content: space-between; }
.student-head h2 { font-size: 28px; font-weight: 800; }
.saved { font-size: 13px; color: var(--muted); }
.notice { background: var(--surface); padding: 12px 14px; font-size: 14px; color: var(--muted); }
.notice strong { color: var(--fg); }
fieldset { border: 0; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 16px; min-width: 0; }
details.sec { border-top: 2px solid var(--fg); }
details.sec > summary { cursor: pointer; list-style: none; display: flex; align-items: center; gap: 12px; padding: 14px 0; font-weight: 800; font-size: 19px; }
details.sec > summary::-webkit-details-marker { display: none; }
details.sec > summary .letter { width: 30px; height: 30px; display: grid; place-items: center; background: var(--accent); color: var(--accent-fg); font-size: 15px; flex: none; }
details.sec > summary .count { margin-left: auto; font-size: 13px; font-weight: 600; color: var(--muted); font-variant-numeric: tabular-nums; }
details.sec > summary .tw { width: 14px; height: 14px; transition: transform .15s; }
details.sec[open] > summary .tw { transform: rotate(90deg); }
.sec-body { padding-bottom: 22px; display: flex; flex-direction: column; gap: 18px; }
.q { display: flex; flex-direction: column; gap: 6px; min-width: 0; }
.q > label, .q > .qlabel { font-weight: 600; }
.q .num { color: var(--muted); font-variant-numeric: tabular-nums; margin-right: 4px; }
.q input[type=text], .q input[type=email], .q textarea, .q select, .grade input[type=number] { width: 100%; padding: 9px 11px; border: 1.5px solid var(--line); background: var(--bg); border-radius: 0; }
.q textarea { min-height: 64px; resize: vertical; }
.q input:focus, .q textarea:focus, .q select:focus { border-color: var(--fg); }
.grade { display: grid; grid-template-columns: 96px auto minmax(0, 1fr); gap: 10px; align-items: center; }
@media (max-width: 520px) { .grade { grid-template-columns: 90px 1fr; } .grade .gcomment { grid-column: 1 / -1; } }
.grade input[type=number] { font-variant-numeric: tabular-nums; }
.chk { display: inline-flex; gap: 6px; align-items: center; font-size: 14px; color: var(--muted); white-space: nowrap; }
.opts { display: flex; flex-wrap: wrap; gap: 8px; }
.opt { position: relative; }
.opt input { position: absolute; opacity: 0; inset: 0; cursor: pointer; }
.opt span { display: inline-block; padding: 7px 12px; border: 1.5px solid var(--line); font-size: 14px; }
.opt input:checked + span { background: var(--fg); color: var(--bg); border-color: var(--fg); }
.opt input:focus-visible + span { outline: 3px solid var(--focus); outline-offset: 2px; }

/* Recomendación */
.reco { position: sticky; top: 16px; max-height: calc(100vh - 32px); overflow: auto; display: flex; flex-direction: column; gap: 18px; min-width: 0; }
.panel-dark { background: var(--band); color: var(--band-fg); padding: 20px; display: flex; flex-direction: column; gap: 12px; }
.panel-dark .eyebrow { color: var(--accent); }
.panel-dark h3 { font-size: 23px; font-weight: 800; }
.panel-dark .why { margin: 0; padding: 0; list-style: none; display: flex; flex-direction: column; gap: 6px; font-size: 14px; color: var(--band-muted); }
.panel-dark .why li { display: grid; grid-template-columns: 14px 1fr; gap: 8px; }
.panel-dark .why li svg { margin-top: 4px; }
.panel-dark .why li.gap { color: #ffd57a; }
.conf { font-size: 12px; color: var(--band-muted); }
.meter-row { display: grid; grid-template-columns: minmax(0, 1fr) 36px; gap: 4px 10px; align-items: center; font-size: 14px; }
.meter-row .bar { grid-column: 1 / -1; height: 8px; background: var(--surface-2); }
.meter-row .bar i { display: block; height: 100%; background: var(--muted); }
.meter-row.top .bar i { background: var(--accent); }
.meter-row .v { text-align: right; font-variant-numeric: tabular-nums; font-weight: 700; }
.meter-row.top .name { font-weight: 700; }
.ranking { display: flex; flex-direction: column; gap: 12px; }
.box { border: 1.5px solid var(--line); padding: 16px; display: flex; flex-direction: column; gap: 12px; }
.box h4 { margin: 0; font-size: 13px; letter-spacing: .06em; text-transform: uppercase; color: var(--muted); }
.flags { display: flex; flex-direction: column; gap: 6px; font-size: 14px; }
.flag { display: grid; grid-template-columns: 10px 1fr; gap: 8px; align-items: baseline; }
.flag::before { content: ""; width: 10px; height: 10px; background: var(--warn); }
.flag.ok::before { background: var(--good); }
.flag.bad::before { background: var(--bad); }
.kv { display: grid; grid-template-columns: auto 1fr; gap: 4px 12px; font-size: 14px; }
.kv dt { color: var(--muted); }
.kv dd { margin: 0; font-weight: 600; }
.downloads { display: flex; flex-direction: column; gap: 8px; }
.downloads .btn { justify-content: space-between; }
.msg { font-size: 13px; color: var(--muted); min-height: 1.2em; }
.empty { padding: 40px 20px; text-align: left; background: var(--surface); display: flex; flex-direction: column; gap: 12px; align-items: flex-start; }
.hidden-file { position: absolute; width: 1px; height: 1px; opacity: 0; pointer-events: none; }
@media (prefers-reduced-motion: reduce) { * { transition: none !important; } }

/* ---------- Añadidos para la versión web ---------- */
.gcomment { width: 100%; padding: 9px 11px; border: 1.5px solid var(--line); background: var(--bg); border-radius: 0; }
.single { max-width: 860px; margin: 0 auto; padding-block: 28px 140px; display: flex; flex-direction: column; gap: 22px; }
.submitbar { position: fixed; left: 0; right: 0; bottom: 0; z-index: 5; background: var(--band); color: var(--band-fg); padding-bottom: env(safe-area-inset-bottom, 0px); }
.submitbar .inner { max-width: 860px; margin: 0 auto; padding-block: 14px; padding-left: max(16px, env(safe-area-inset-left, 0px)); padding-right: max(16px, env(safe-area-inset-right, 0px)); display: flex; flex-wrap: wrap; gap: 10px 20px; align-items: center; justify-content: space-between; }
.progress { display: flex; flex-direction: column; gap: 6px; min-width: 200px; flex: 1; }
.progress .ptxt { font-size: 14px; color: var(--band-muted); font-variant-numeric: tabular-nums; }
.progress .pbar { height: 6px; background: #3a3d45; }
.progress .pbar i { display: block; height: 100%; background: var(--accent); width: 0; transition: width .2s; }
.status { font-size: 13px; color: var(--band-muted); width: 100%; }
.status.err { color: #ffb4ab; }
.success { background: var(--band); color: var(--band-fg); padding: 22px; display: flex; flex-direction: column; gap: 12px; }
.success h2 { font-size: 22px; }
.success p { margin: 0; color: var(--band-muted); }
.linkrow { display: flex; gap: 8px; flex-wrap: wrap; }
.linkrow input { flex: 1; min-width: 0; padding: 10px 12px; border: 0; border-radius: 0; background: #24262c; color: #fff; font-family: var(--mono); font-size: 13px; }
.warnbox { border: 2px solid var(--warn); padding: 14px 16px; font-size: 14px; }
.login { max-width: 420px; margin: 48px auto; display: flex; flex-direction: column; gap: 14px; }
.login input { width: 100%; padding: 11px 12px; border: 1.5px solid var(--line); background: var(--bg); border-radius: 0; }
.toolbar { display: flex; flex-wrap: wrap; gap: 8px; }
.switch { display: inline-flex; align-items: center; gap: 10px; font-weight: 600; cursor: pointer; }
.switch input { width: 18px; height: 18px; accent-color: var(--accent); }
.q input:invalid:not(:placeholder-shown) { border-color: var(--bad); }
.linkbtn { all: unset; cursor: pointer; color: var(--link); font-size: 14px; text-decoration: underline; text-underline-offset: 3px; align-self: flex-start; }
.linkbtn:focus-visible { outline: 3px solid var(--focus); outline-offset: 2px; }
[hidden] { display: none !important; }
.tabs { display: flex; gap: 0; border-bottom: 2px solid var(--fg); margin-top: 22px; overflow-x: auto; }
.tabs button { all: unset; cursor: pointer; padding: 12px 18px; font-weight: 700; color: var(--muted); white-space: nowrap; }
.tabs button[aria-selected="true"] { background: var(--fg); color: var(--bg); }
.tabs button:focus-visible { outline: 3px solid var(--focus); outline-offset: -3px; }
.editor { max-width: 980px; padding-block: 24px 80px; display: flex; flex-direction: column; gap: 20px; }
.ed-head { display: flex; flex-direction: column; gap: 10px; }
.ed-head h2 { font-size: 26px; font-weight: 800; }
.ed-head p { margin: 0; color: var(--muted); max-width: 70ch; }
.ed-sticky { position: sticky; top: 0; z-index: 4; background: var(--bg); padding-block: 12px; border-bottom: 1px solid var(--line); display: flex; flex-wrap: wrap; gap: 10px; align-items: center; }
.ed-sticky .msg { flex: 1; min-width: 200px; }
.ed-sec { border-top: 2px solid var(--fg); padding-top: 14px; display: flex; flex-direction: column; gap: 12px; }
.ed-sec-head { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
.ed-sec-head .letter { width: 30px; height: 30px; display: grid; place-items: center; background: var(--accent); color: var(--accent-fg); font-weight: 800; flex: none; }
.ed-sec-head input { flex: 1; min-width: 200px; font-size: 18px; font-weight: 800; padding: 8px 10px; border: 1.5px solid var(--line); background: var(--bg); border-radius: 0; }
.ed-q { display: grid; grid-template-columns: 38px minmax(0, 1fr) auto; gap: 10px; padding: 12px; background: var(--surface); align-items: start; }
.ed-q .qn { font-weight: 800; color: var(--muted); padding-top: 8px; font-variant-numeric: tabular-nums; }
.ed-q .fields { display: flex; flex-direction: column; gap: 8px; min-width: 0; }
.ed-q textarea, .ed-q select, .ed-field textarea, .ed-field input { width: 100%; padding: 8px 10px; border: 1.5px solid var(--line); background: var(--bg); border-radius: 0; }
.ed-q .row { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; }
.ed-q .row select { width: auto; }
.ed-q .ops { display: flex; flex-direction: column; gap: 4px; }
.ed-q .ops label, .ed-field label { font-size: 13px; color: var(--muted); }
.ed-q .acts { display: flex; flex-direction: column; gap: 4px; }
.iconbtn { all: unset; cursor: pointer; width: 32px; height: 32px; display: grid; place-items: center; border: 1.5px solid var(--line); background: var(--bg); font-weight: 700; }
.iconbtn:hover { border-color: var(--fg); }
.iconbtn:focus-visible { outline: 3px solid var(--focus); outline-offset: 2px; }
.iconbtn[disabled] { opacity: .35; cursor: not-allowed; }
.iconbtn.del { color: var(--bad); }
.iconbtn.del[data-confirm="1"] { background: var(--bad); color: #fff; border-color: var(--bad); width: auto; padding: 0 8px; font-size: 12px; }
.pill { display: inline-block; font-size: 11px; font-weight: 700; letter-spacing: .03em; text-transform: uppercase; padding: 3px 7px; background: var(--surface-2); color: var(--muted); }
.pill.reco { background: var(--accent); color: var(--accent-fg); }
.ed-field { display: flex; flex-direction: column; gap: 4px; }
@media (max-width: 560px) { .ed-q { grid-template-columns: 1fr; } .ed-q .acts { flex-direction: row; } }
.item-row { display: grid; grid-template-columns: minmax(0, 1fr) auto; align-items: center; border-bottom: 1px solid var(--line); }
.item-row .item { border-bottom: 0; min-width: 0; }
.item-row .item .l { overflow-wrap: anywhere; }
.item-row .iconbtn.del { margin-right: 6px; }
.item-row[aria-current="true"] { background: var(--surface-2); box-shadow: inset 4px 0 0 var(--accent); }
.item-row[aria-current="true"] .item { background: transparent; box-shadow: none; }