/* Modo Classroom (panel de profesor, deberes, demo). Solo clases .cls-*:
   no toca estilos globales. Se carga después de styles.css. */

.cls-h2 { font-size: 1.1rem; margin: 0 0 6px; display: flex; align-items: center; gap: 8px; }
.cls-page .section-title { margin-top: var(--sp-6); }

/* --- demo --- */
.cls-demo-banner { display: flex; flex-wrap: wrap; align-items: center; gap: 10px 14px; padding: 10px 14px; margin-bottom: var(--sp-4);
  border: var(--bw) dashed var(--gold-dark); border-radius: var(--r-md); background: var(--gold-soft); color: var(--ink); font-weight: 600; font-size: var(--t-sm); }
.cls-demo-banner > span:nth-child(2) { flex: 1 1 220px; }
.cls-demo-tag { display: inline-block; padding: 2px 8px; border-radius: 999px; background: var(--gold-bright); color: #3d2a00;
  font: 800 var(--t-xs) var(--font-display); text-transform: uppercase; letter-spacing: .08em; vertical-align: middle; }
.cls-pitch { display: grid; grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr); gap: var(--sp-5); align-items: center; }
.cls-pitch h2 { margin: 0 0 10px; font-size: var(--t-xl); }
.cls-pitch-list { list-style: none; padding: 0; margin: 0; display: grid; gap: 10px; font-weight: 600; }
.cls-pitch-list li { display: flex; gap: 10px; align-items: flex-start; }
.cls-pitch-list .ic, .cls-pitch-list svg { flex: none; color: var(--blue); margin-top: 2px; }
.cls-pitch-cta { display: grid; gap: 6px; justify-items: start; }
.cls-pitch-cta .hint { margin: 0; }
.cls-cloud-note { display: flex; gap: 6px; align-items: flex-start; max-width: 70ch; }
@media (max-width: 700px) { .cls-pitch { grid-template-columns: 1fr; } .cls-pitch-cta .btn { width: 100%; } }

/* --- listas y enlaces-fila --- */
a.cls-class-link { color: inherit; text-decoration: none; }
a.cls-class-link:hover strong, a.cls-class-link:focus-visible strong { color: var(--blue); text-decoration: underline; }
a.cls-class-link > svg:last-child { flex: none; color: var(--ink-2); }
.cls-alert-pill { display: inline-flex; align-items: center; gap: 4px; padding: 3px 10px; border-radius: 999px; background: var(--danger-soft);
  color: var(--danger); font: 800 var(--t-xs) var(--font-ui); white-space: nowrap; }
.cls-select, .cls-grid select, .cls-grid input[type="date"] { font: inherit; min-height: 44px; padding: 8px 10px; border: var(--bw) solid var(--border);
  border-radius: var(--r-sm); background: var(--surface-2); color: var(--ink); width: 100%; }
.stack .cls-select { min-height: 50px; }

/* --- cabecera de clase --- */
.cls-head-actions { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; }
.cls-menu { position: relative; }
.cls-menu > summary { list-style: none; cursor: pointer; }
.cls-menu > summary::-webkit-details-marker { display: none; }
.cls-menu-list { position: absolute; right: 0; top: calc(100% + 6px); z-index: 20; min-width: 220px; display: grid; padding: 6px;
  background: var(--surface); border: var(--bw) solid var(--border); border-radius: var(--r-md); box-shadow: var(--shadow-2); }
.cls-menu-list button { all: unset; cursor: pointer; padding: 10px 12px; border-radius: var(--r-sm); font-weight: 600; }
.cls-menu-list button:hover, .cls-menu-list button:focus-visible { background: var(--surface-2); outline: 2px solid var(--blue-bright); outline-offset: -2px; }
@media (max-width: 600px) { .cls-menu-list { left: 0; right: auto; } }

.cls-alerts { border-color: var(--danger); background: color-mix(in srgb, var(--danger-soft) 55%, var(--surface)); margin-bottom: var(--sp-4); }
.cls-alerts .cls-h2 { color: var(--danger); }
.cls-invite { margin-bottom: var(--sp-4); }
.cls-invite.is-new { border-color: var(--blue-bright); box-shadow: 0 0 0 4px color-mix(in srgb, var(--blue-bright) 22%, transparent); }

/* --- deberes --- */
.cls-form > summary { list-style: none; }
.cls-form > summary::-webkit-details-marker { display: none; }
.cls-form > summary strong { display: inline-flex; gap: 8px; align-items: center; color: var(--blue); }
.cls-grid .cls-wide-2 { grid-column: span 2; }
@media (max-width: 600px) { .cls-grid .cls-wide-2 { grid-column: 1 / -1; } }
.cls-due-chips { display: flex; flex-wrap: wrap; gap: 8px; margin-top: -4px; }
.cls-chip-btn { font: 700 var(--t-xs) var(--font-ui); padding: 7px 12px; min-height: 36px; border-radius: 999px; border: var(--bw) solid var(--border);
  background: var(--surface); color: var(--ink); cursor: pointer; }
.cls-chip-btn.is-on { background: var(--blue); border-color: var(--blue); color: #fff; }
.cls-assign-row { grid-template-columns: minmax(160px, 1.6fr) 2fr 60px 20px; }
.bar-row.cls-weak-row { grid-template-columns: minmax(0, 1.2fr) minmax(70px, 1fr) 44px auto; }
@media (max-width: 600px) {
  .cls-assign-row { grid-template-columns: 1fr 60px; }
  .cls-assign-row > svg { display: none; }
  .bar-row.cls-weak-row { grid-template-columns: 1fr 48px auto; }
  .bar-row.cls-weak-row .btn { display: inline-flex; }
}
.cls-hw-row .name strong { display: block; }

/* --- alumnos --- */
.cls-reasons { display: flex !important; flex-wrap: wrap; gap: 6px; margin-top: 4px; }
.cls-reason { display: inline-flex; align-items: center; gap: 4px; padding: 2px 9px; border-radius: 999px; background: var(--surface-2);
  color: var(--ink-2); font: 700 var(--t-xs) var(--font-ui); white-space: nowrap; }
.cls-reason.is-bad { background: var(--danger-soft); color: var(--danger); }
.cls-reason.is-warn { background: var(--gold-soft); color: var(--gold); }
.cls-reason.is-ok { background: var(--success-soft, #e3f6df); color: var(--success, #2f7a26); }
.cls-two { margin-top: 0; }
.cls-two > div > .card { height: calc(100% - 64px); }
@media (max-width: 600px) { .cls-two > div > .card { height: auto; } }
.cls-table { width: 100%; border-collapse: collapse; font-size: var(--t-sm); }
.cls-table th, .cls-table td { padding: 10px 8px; text-align: left; border-bottom: var(--bw) solid var(--border); white-space: nowrap; }
.cls-table thead th { font: 800 var(--t-xs) var(--font-display); text-transform: uppercase; letter-spacing: .06em; color: var(--ink-2); }
.cls-table tbody tr:last-child > * { border-bottom: 0; }
.cls-table tbody th a { color: var(--ink); font-weight: 700; }
.cls-table svg { vertical-align: -2px; color: var(--orange-bright, #ff9600); }
.bar-row.cls-skill-bar { grid-template-columns: minmax(120px, 1.4fr) 2fr auto; }
.bar-row.cls-skill-bar .num { white-space: nowrap; }
@media (max-width: 600px) { .bar-row.cls-skill-bar { grid-template-columns: 1fr auto; } }

/* --- mapa de calor --- */
.cls-heat-wrap { max-width: 100%; }
.cls-heat { border-collapse: separate; border-spacing: 3px; font: 700 var(--t-xs) var(--font-mono); }
.cls-heat th[scope="col"] { vertical-align: bottom; height: 120px; padding: 0 2px; }
.cls-heat th[scope="col"] span { display: inline-block; writing-mode: vertical-rl; transform: rotate(180deg); max-height: 118px; overflow: hidden;
  text-overflow: ellipsis; white-space: nowrap; font: 700 var(--t-xs) var(--font-ui); color: var(--ink-2); }
.cls-heat th[scope="row"] { text-align: left; padding-right: 8px; white-space: nowrap; font: 700 var(--t-sm) var(--font-ui); max-width: 180px; overflow: hidden; text-overflow: ellipsis; }
.cls-heat td { min-width: 34px; height: 30px; text-align: center; border-radius: 6px; }
.hm-0 { background: var(--danger-soft); color: var(--danger); }
.hm-1 { background: var(--gold-soft); color: var(--gold); }
.hm-2 { background: color-mix(in srgb, var(--success-soft, #e3f6df) 60%, var(--surface)); color: var(--success, #2f7a26); }
.hm-3 { background: var(--success-soft, #e3f6df); color: var(--success, #2f7a26); }
.hm-none { color: var(--ink-3, var(--ink-2)); background: var(--surface-2); }
.cls-heat-total th, .cls-heat-total td { font-weight: 800; box-shadow: inset 0 2px 0 var(--border-strong); }
.cls-legend { display: flex; flex-wrap: wrap; gap: 6px; }
.cls-legend span { padding: 2px 8px; border-radius: 6px; font: 700 var(--t-xs) var(--font-mono); }

/* --- preguntas más falladas --- */
.cls-wrong { margin: 0; padding-left: 1.3em; display: grid; gap: 12px; }
.cls-wrong li { padding-left: 4px; }
.cls-wrong-n { display: inline-block; font: 800 var(--t-xs) var(--font-ui); color: var(--danger); margin-bottom: 2px; }
.cls-wrong-q { display: block; font-weight: 600; overflow-wrap: anywhere; }
.cls-wrong small { display: block; }

/* --- ajustes --- */
.cls-switch { display: flex !important; gap: 12px; align-items: flex-start; font-weight: 600 !important; cursor: pointer; }
.cls-switch input { width: 22px; height: 22px; min-height: 0 !important; margin-top: 2px; accent-color: var(--blue); flex: none; }

/* --- compartir / QR --- */
.cls-share-dialog { text-align: center; width: min(460px, calc(100vw - 32px)); }
.cls-qr { width: min(280px, 70vw); margin: 4px auto 8px; background: #fff; border-radius: var(--r-md); padding: 8px; }
.cls-qr:empty { display: none; }
.cls-qr svg, .cls-qr img { display: block; width: 100%; height: auto; }
.cls-code-big { font-size: clamp(2rem, 9vw, 3rem); text-align: center; }
.cls-link { font-size: var(--t-xs); color: var(--ink-2); overflow-wrap: anywhere; margin: 0 0 12px; }
.cls-share-actions { display: flex; gap: 8px; justify-content: center; flex-wrap: wrap; }
.cls-copy-box { width: 100%; font: 600 var(--t-sm) var(--font-mono); padding: 10px; border: var(--bw) solid var(--border); border-radius: var(--r-sm);
  background: var(--surface-2); color: var(--ink); resize: vertical; }

/* --- tarjeta "Deberes de tu profe" en Inicio: nunca más ancha que la pantalla --- */
.cls-home { min-width: 0; max-width: 100%; }
.cls-home .section-title { flex-wrap: wrap; gap: 6px; min-width: 0; }
.cls-home .section-title > a.btn { max-width: 100%; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; display: inline-block; }
.cls-home .cls-hw-row { min-width: 0; }
.cls-home .cls-hw-row .name { min-width: 0; overflow-wrap: anywhere; }

/* ================= Classroom (G8): tipo Google Classroom, móvil primero ================= */
.cr-page { max-width: 1100px; }

/* ¿estudiante o profesor? */
.cr-role { text-align: center; padding: 8px 0; }
.cr-role h2 { margin: 0 0 6px; font-size: var(--t-xl); }
.cr-role-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 12px; margin-top: 16px; }
.cr-role-card { display: grid; justify-items: center; gap: 6px; padding: 22px 16px; border: var(--bw) solid var(--border); border-bottom-width: 5px;
  border-radius: var(--r-lg); background: var(--surface); color: var(--ink); cursor: pointer; font: inherit; }
.cr-role-card svg { color: var(--blue); }
.cr-role-card strong { font: 800 var(--t-lg) var(--font-display); }
.cr-role-card small { color: var(--ink-2); }
.cr-role-card:hover, .cr-role-card:focus-visible { border-color: var(--blue-bright); outline: none; }
.cr-role-switch { white-space: nowrap; }

/* lista de clases (tarjetas con banda de color) */
.cr-class-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(min(100%, 280px), 1fr)); gap: 14px; margin-bottom: 16px; }
.cr-class-card { display: flex; flex-direction: column; min-height: 150px; border: var(--bw) solid var(--border); border-radius: var(--r-lg);
  background: var(--surface); color: var(--ink); text-decoration: none; overflow: hidden; min-width: 0; }
a.cr-class-card:hover, a.cr-class-card:focus-visible { border-color: var(--c, var(--blue)); }
.cr-class-top { display: grid; gap: 4px; padding: 16px; background: var(--c, var(--blue)); color: #fff; text-decoration: none; min-height: 86px; }
.cr-class-top strong { font: 800 var(--t-lg) var(--font-display); overflow-wrap: anywhere; }
.cr-class-top small { opacity: .92; }
.cr-class-foot { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 8px; padding: 10px 14px; margin-top: auto; font-size: var(--t-sm); }
.cr-class-card.is-join { padding: 16px; display: block; }

/* banda de la clase + pestañas */
.cr-banner { position: relative; display: flex; flex-wrap: wrap; gap: 12px; align-items: flex-end; justify-content: space-between;
  padding: 18px 18px 16px; border-radius: var(--r-lg); background: var(--c, var(--blue)); color: #fff; min-height: 120px;
  background-image: radial-gradient(circle at 92% 18%, rgb(255 255 255 / .18) 0 60px, transparent 61px), radial-gradient(circle at 78% 120%, rgb(255 255 255 / .12) 0 90px, transparent 91px); }
.cr-banner h1 { margin: 2px 0 4px; font-size: clamp(1.5rem, 6vw, 2.2rem); color: #fff; overflow-wrap: anywhere; }
.cr-banner-text { min-width: 0; flex: 1 1 240px; }
.cr-banner-eyebrow { margin: 0; font-size: var(--t-sm); opacity: .95; }
.cr-banner-eyebrow a { color: #fff; font-weight: 700; display: inline-flex; gap: 4px; align-items: center; }
.cr-banner-sub { margin: 0; font-weight: 600; }
.cr-banner .btn-ghost { background: rgb(255 255 255 / .16); color: #fff; border-color: rgb(255 255 255 / .5); }
.cr-code-btn { font: 800 var(--t-base) var(--font-mono); padding: 2px 10px; border-radius: 8px; border: 0; background: rgb(255 255 255 / .22); color: inherit; cursor: pointer; letter-spacing: .08em; }
.cr-people .cr-code-btn { background: var(--surface-2); color: var(--ink); }
/* Pestañas: en móvil se desplazan dentro de la barra (nunca ensanchan la página). */
.cr-tabs { --accent: var(--blue); margin-top: var(--sp-2); flex-wrap: nowrap; max-width: 100%; min-width: 0; overflow-x: auto; overflow-y: hidden;
  scrollbar-width: none; -webkit-overflow-scrolling: touch; scroll-snap-type: x proximity; }
.cr-tabs::-webkit-scrollbar { display: none; }
.cr-tabs .tab { text-decoration: none; flex: none; scroll-snap-align: start; }
/* Móvil: las pestañas pasan a dos filas (todas visibles, sin scroll oculto). */
@media (max-width: 600px) { .cr-tabs { flex-wrap: wrap; overflow: visible; gap: 0 2px; } .cr-tabs .tab { padding: 10px 10px; min-height: 44px; letter-spacing: .04em; } }
.cr-page, .cr-page > * { min-width: 0; max-width: 100%; }
.cr-stats-actions { display: flex; justify-content: flex-end; margin-bottom: var(--sp-4); }

/* tablón */
.cr-stream { display: grid; grid-template-columns: 220px minmax(0, 1fr); gap: 16px; align-items: start; }
.cr-feed { display: grid; gap: 12px; min-width: 0; }
.cr-upcoming { display: grid; gap: 8px; position: sticky; top: 12px; }
.cr-up-row { display: grid; color: var(--ink); text-decoration: none; padding: 6px 0; border-bottom: var(--bw) solid var(--border); }
.cr-up-row small { color: var(--ink-2); font-weight: 700; }
.cr-up-row span { font-weight: 600; overflow-wrap: anywhere; }
@media (max-width: 760px) {
  .cr-stream { grid-template-columns: 1fr; }
  .cr-upcoming { position: static; order: 2; }
}
.cr-composer { display: grid; gap: 10px; }
.cr-composer-label { display: flex !important; gap: 10px; align-items: flex-start; }
.cr-composer textarea, .cr-editor textarea, .cr-mywork textarea, .cr-import-box { width: 100%; font: inherit; padding: 10px 12px; border: var(--bw) solid var(--border);
  border-radius: var(--r-sm); background: var(--surface-2); color: var(--ink); resize: vertical; min-height: 48px; }
.cr-composer-more { display: none; gap: 10px; }
.cr-composer.is-open .cr-composer-more { display: grid; }
.cr-composer-actions { display: flex; justify-content: flex-end; }
.cr-avatar { width: 38px; height: 38px; flex: none; border-radius: 50%; display: grid; place-items: center; background: var(--c, var(--blue)); color: #fff;
  font: 800 .8rem var(--font-display); }
.cr-post { display: grid; gap: 10px; min-width: 0; }
.cr-post-head { display: flex; align-items: center; gap: 10px; }
.cr-post-head > span:not(.cr-avatar) { display: grid; flex: 1; min-width: 0; }
.cr-post-text { overflow-wrap: anywhere; line-height: 1.55; }
.cr-feed-work { display: flex; gap: 12px; align-items: center; color: var(--ink); text-decoration: none; padding: 12px 16px; }
.cr-feed-work > span:last-child { display: grid; min-width: 0; }
.cr-feed-work strong { overflow-wrap: anywhere; }
.cr-empty { display: grid; justify-items: center; text-align: center; gap: 4px; padding: 24px 12px; color: var(--ink-2); }

/* archivos */
.cr-files { display: flex; flex-wrap: wrap; gap: 8px; min-width: 0; }
.cr-file { display: inline-flex; align-items: stretch; max-width: 100%; min-width: 0; border: var(--bw) solid var(--border); border-radius: var(--r-sm); background: var(--surface); overflow: hidden; }
.cr-file-open { display: grid; grid-template-columns: auto minmax(0, 1fr); grid-template-rows: auto auto; column-gap: 8px; align-items: center; text-align: left;
  padding: 8px 12px 8px 8px; border: 0; background: none; color: var(--ink); cursor: pointer; font: inherit; min-width: 0; max-width: min(320px, 78vw); min-height: 48px; }
.cr-file-open:hover .cr-file-name { text-decoration: underline; }
.cr-file-ic { grid-row: span 2; width: 34px; height: 34px; border-radius: 8px; display: grid; place-items: center; background: var(--danger-soft); color: var(--danger); }
.cr-file-name { font-weight: 700; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; min-width: 0; }
.cr-file small { color: var(--ink-2); font-size: var(--t-xs); }
.cr-file-x { border-radius: 0; }
.cr-file.is-link .cr-file-ic { background: var(--blue-soft); color: var(--blue); }
.cr-file.is-link .cr-file-open { text-decoration: none; }
.cr-picker-actions { display: flex; flex-wrap: wrap; gap: 8px; }
.cr-link-form { display: grid; grid-template-columns: minmax(0, 2fr) minmax(0, 1fr) auto; gap: 8px; align-items: center; width: 100%; }
.cr-link-form input { font: inherit; min-height: 44px; padding: 8px 12px; border: var(--bw) solid var(--border); border-radius: var(--r-sm); background: var(--surface-2); color: var(--ink); width: 100%; min-width: 0; }
.cr-link-form .form-error { grid-column: 1 / -1; }
.cr-link-form .form-error:empty { display: none; }
@media (max-width: 600px) { .cr-link-form { grid-template-columns: 1fr; } .cr-link-form .btn { width: 100%; } }
.cr-frame-link { height: calc(100% - 44px); }
.cr-viewer-foot { padding: 10px 16px; font-size: var(--t-xs); }
.cr-picker { display: grid; gap: 8px; justify-items: start; }
.cr-attach { cursor: pointer; }
.cr-upload { width: 100%; }

/* visor */
.cr-viewer { width: 100vw; height: 100dvh; max-width: none; max-height: none; margin: 0; padding: 0; border: 0; background: #2b2f33; color: #fff; display: none; }
.cr-viewer[open] { display: flex; flex-direction: column; }
.cr-viewer::backdrop { background: rgb(0 0 0 / .7); }
.cr-viewer-bar { display: flex; align-items: center; gap: 8px; padding: 6px 8px 6px 14px; background: #1d2023; min-height: 52px; }
.cr-viewer-title { flex: 1; min-width: 0; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.cr-viewer-pages { color: #c9d1d9 !important; font-size: var(--t-xs); white-space: nowrap; }
.cr-viewer-tools { display: flex; gap: 2px; }
.cr-viewer .icon-btn { color: #fff; display: inline-grid; place-items: center; }
.cr-viewer .icon-btn:hover { background: rgb(255 255 255 / .12); color: #fff; }
.cr-viewer-body { flex: 1; overflow: auto; -webkit-overflow-scrolling: touch; }
.cr-viewer-msg { padding: 24px; text-align: center; display: grid; justify-items: center; gap: 8px; color: #e6edf3; }
.cr-viewer-msg a { color: #9cd2ff; }
.cr-pdf { display: grid; justify-items: center; gap: 10px; padding: 10px 4px 40px; }
.cr-pdf-page { background: #fff; box-shadow: 0 2px 12px rgb(0 0 0 / .4); max-width: none; }
.cr-pdf-page canvas { display: block; height: auto; }
.cr-img-wrap { min-height: 100%; display: grid; place-items: center; padding: 8px; }
.cr-img { max-width: 100%; max-height: calc(100dvh - 70px); cursor: zoom-in; background: #fff; }
.cr-img.is-zoomed { max-width: none; max-height: none; cursor: zoom-out; }
.cr-frame { width: 100%; height: calc(100% - 50px); border: 0; background: #fff; }
.cr-text { margin: 0; padding: 16px; white-space: pre-wrap; overflow-wrap: anywhere; color: #e6edf3; font: 500 var(--t-sm)/1.6 var(--font-mono); }
@media (max-width: 520px) { .cr-viewer-pages { display: none; } }

/* trabajo de clase */
.cr-work-top { display: flex; justify-content: flex-start; margin-bottom: 12px; }
.cr-create .cls-menu-list { left: 0; right: auto; }
.cr-create .cls-menu-list a, .cr-create .cls-menu-list button { display: flex; gap: 10px; align-items: center; padding: 11px 12px; border-radius: var(--r-sm);
  color: var(--ink); font-weight: 700; text-decoration: none; }
.cr-create .cls-menu-list a:hover { background: var(--surface-2); }
.cr-work-list { padding: 6px; }
.cr-work-row { display: grid; grid-template-columns: auto minmax(0, 1fr) auto; gap: 12px; align-items: center; padding: 10px; border-radius: var(--r-md);
  color: var(--ink); text-decoration: none; }
.cr-work-row + .cr-work-row { border-top: var(--bw) solid var(--border); border-radius: 0; }
.cr-work-row:hover { background: var(--surface-2); }
.cr-work-main { display: grid; min-width: 0; }
.cr-work-main strong { overflow-wrap: anywhere; }
.cr-work-stat { display: grid; justify-items: end; font-size: var(--t-xs); color: var(--ink-2); }
.cr-work-stat strong { font: 800 var(--t-base) var(--font-mono); color: var(--ink); }
.cr-kind-ic { width: 40px; height: 40px; flex: none; border-radius: 50%; display: grid; place-items: center; background: var(--blue-soft); color: var(--blue); }
.cr-kind-ic.is-task { background: var(--gold-soft); color: var(--gold); }
.cr-kind-ic.is-quiz { background: var(--purple-soft, #f1e8ff); color: var(--purple, #7c3aed); }
.cr-kind-ic.is-practice { background: var(--green-soft); color: var(--green-ink); }
.cr-work #cls-assign-box { margin-bottom: 12px; }

/* detalle */
.cr-detail-head { display: grid; gap: 12px; margin-bottom: var(--sp-4); }
.cr-detail-title { display: flex; gap: 12px; align-items: flex-start; }
.cr-detail-title > div { flex: 1; min-width: 0; }
.cr-detail-title h2 { margin: 2px 0 0; font-size: var(--t-xl); overflow-wrap: anywhere; }
.cr-sub-row { display: flex; align-items: center; gap: 10px; padding: 8px 0; }
.cr-sub-main { display: grid; flex: 1; min-width: 0; }
.cr-sub-main strong { overflow-wrap: anywhere; }
.cr-score { font-weight: 800; min-width: 3.2em; text-align: right; }
.cr-grade-row { border-bottom: var(--bw) solid var(--border); padding: 4px 0 10px; }
.cr-grade-row:last-child { border-bottom: 0; }
.cr-sub-body { display: grid; gap: 8px; padding-left: 48px; }
.cr-grade { display: grid; grid-template-columns: 110px minmax(0, 1fr) auto; gap: 8px; align-items: end; }
.cr-grade label { display: grid; gap: 4px; font-size: var(--t-xs); font-weight: 700; color: var(--ink-2); }
.cr-grade input { font: inherit; min-height: 42px; padding: 6px 10px; border: var(--bw) solid var(--border); border-radius: var(--r-sm); background: var(--surface-2); color: var(--ink); width: 100%; }
@media (max-width: 600px) {
  .cr-sub-body { padding-left: 0; }
  .cr-grade { grid-template-columns: 90px minmax(0, 1fr); }
  .cr-grade .btn { grid-column: 1 / -1; }
}
.cr-qstats { margin: 0; padding-left: 1.3em; display: grid; gap: 12px; }
.cr-qstats-q { font-weight: 600; overflow-wrap: anywhere; }
.cr-qstats .bar-row { grid-template-columns: 1fr 52px; margin: 4px 0 2px; }
.cr-people { display: grid; gap: 14px; }
.cr-people-h { border-bottom: 2px solid var(--blue); padding-bottom: 8px; justify-content: space-between; color: var(--blue); }
.cr-person { display: flex; align-items: center; gap: 12px; padding: 10px 4px; color: var(--ink); text-decoration: none; border-bottom: var(--bw) solid var(--border); }
.cr-person:last-child { border-bottom: 0; }
.cr-person > span { display: grid; flex: 1; min-width: 0; overflow-wrap: anywhere; }

/* editor y tests */
.cr-editor { display: grid; gap: 14px; }
.cr-editor label { display: grid; gap: 6px; font-weight: 700; }
.cr-editor input:not([type=radio]):not([type=file]) { font: inherit; min-height: 46px; padding: 8px 12px; border: var(--bw) solid var(--border);
  border-radius: var(--r-sm); background: var(--surface-2); color: var(--ink); width: 100%; }
.cr-label { display: block; margin-bottom: 6px; }
.cr-due { display: grid; gap: 8px; }
.cr-guide summary { cursor: pointer; font-weight: 700; color: var(--blue); }
.cr-guide-steps { margin: 8px 0; padding-left: 1.3em; display: grid; gap: 4px; }
.cr-prompt { white-space: pre-wrap; overflow-wrap: anywhere; background: var(--surface-2); border-radius: var(--r-sm); padding: 12px; font: 500 var(--t-xs)/1.5 var(--font-mono); margin: 0 0 8px; }
.cr-import-box { font-family: var(--font-mono); font-size: var(--t-sm); }
.cr-questions { display: grid; gap: 12px; }
.cr-q { position: relative; display: grid; gap: 10px; margin: 0; min-width: 0; }
.cr-q-n { font: 800 var(--t-xs) var(--font-display); text-transform: uppercase; letter-spacing: .07em; color: var(--ink-2); padding: 0; }
.cr-q-del { position: absolute; top: 8px; right: 8px; }
.cr-opts { display: grid; gap: 8px; }
.cr-opt { display: grid; grid-template-columns: 26px 22px minmax(0, 1fr) auto; gap: 6px; align-items: center; }
.cr-opt input[type=radio] { width: 22px; height: 22px; accent-color: var(--green); margin: 0; }
.cr-opt-letter { font: 800 var(--t-sm) var(--font-mono); color: var(--ink-2); text-align: center; }
.cr-q-foot { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; justify-content: space-between; }
.cr-explain { font-size: var(--t-sm); }
.cr-editor-actions { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; justify-content: flex-end; position: sticky; bottom: 0; padding: 10px 0;
  background: linear-gradient(transparent, var(--bg, var(--surface)) 30%); }

/* alumno: hacer un test, entregar */
.cr-take { display: grid; gap: 12px; }
.cr-take-q { margin: 0; display: grid; gap: 8px; min-width: 0; }
.cr-take-text { margin: 0; font-weight: 700; font-size: var(--t-lg); overflow-wrap: anywhere; }
.cr-take-opt { display: flex; gap: 10px; align-items: center; padding: 12px; min-height: 52px; border: var(--bw) solid var(--border); border-bottom-width: 4px;
  border-radius: var(--r-md); cursor: pointer; overflow-wrap: anywhere; }
.cr-take-opt:has(input:checked) { border-color: var(--blue-bright); background: var(--blue-soft); }
.cr-take-opt input { width: 20px; height: 20px; accent-color: var(--blue); flex: none; margin: 0; }
.cr-take-bar { position: sticky; bottom: 0; display: flex; gap: 12px; align-items: center; justify-content: space-between; padding: 12px;
  background: var(--surface); border: var(--bw) solid var(--border); border-radius: var(--r-md); box-shadow: var(--shadow-2); }
.cr-quiz-start { justify-items: start; }
.cr-big { font: 800 clamp(1.8rem, 8vw, 2.6rem) var(--font-display); margin: 0 0 8px; }
.cr-review { margin: 0; padding-left: 1.3em; display: grid; gap: 12px; }
.cr-review-q { font-weight: 700; overflow-wrap: anywhere; }
.cr-review-a { display: flex; gap: 6px; align-items: center; overflow-wrap: anywhere; }
.cr-review li.is-ok .cr-review-a { color: var(--success, #2f7a26); }
.cr-review li.is-bad > .cr-review-a:not(.is-right) { color: var(--danger); }
.cr-review .is-right { color: var(--success, #2f7a26); }
.cr-mywork { gap: 10px; }
.cr-mywork label { display: grid; gap: 6px; font-weight: 700; }
.cr-feedback { padding: 10px 12px; border-radius: var(--r-sm); background: var(--success-soft, #e3f6df); color: var(--ink); }
/* móvil: la barra de pestañas inferior es fija; las barras de acción no se pegan abajo */
@media (max-width: 900px) { .cr-editor-actions, .cr-take-bar { position: static; } .cr-editor-actions .btn { flex: 1 1 auto; } }

/* Tarjeta "Clases" en Inicio (siempre visible; dueño, 2026-10-12). */
.cls-entry { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 12px 20px; margin-top: 16px; min-width: 0; }
.cls-entry-text { flex: 1 1 260px; min-width: 0; }
.cls-entry h2 { display: inline-flex; align-items: center; gap: 8px; margin: 0 0 4px; font-size: 1.1rem; }
.cls-entry h2 .ic { color: var(--blue); }
.cls-entry p { margin: 0; font-size: .92rem; }
.cls-entry-actions { display: flex; flex-wrap: wrap; gap: 8px; }
.cls-entry-actions .btn { min-height: 44px; }
@media (max-width: 600px) { .cls-entry-actions { width: 100%; } .cls-entry-actions .btn { flex: 1 1 auto; justify-content: center; } .cls-entry-actions .btn:first-child { flex-basis: 100%; } }

/* Hoy (profe), aprobaciones, apodos, ejemplo */
.cr-today { display: grid; gap: 14px; }
.cr-today-sec .cls-h2 { display: flex; align-items: center; gap: 8px; }
.cr-today-sec .cls-alert-pill { margin-left: auto; }
.cr-today-row .btn { flex: none; }
.cr-today-row .name, .cr-today-sec .skill-row .name, .cr-today-sec .cr-sub-main { min-width: 0; overflow-wrap: anywhere; }
.cr-today-sec .skill-row, .cr-today-sec .cr-sub-row { min-width: 0; flex-wrap: wrap; }
.cr-today-sec .cr-sub-main { flex: 1 1 170px; }
.cr-today-sec .cls-h2 { flex-wrap: wrap; }
.cr-today-actions { justify-content: flex-start; }
.cr-pending .cr-person { flex-wrap: wrap; }
.cr-pending .cr-person > span:first-of-type { flex: 1 1 160px; }
.cr-see-example { display: flex; flex-wrap: wrap; gap: 8px 12px; align-items: center; margin: 20px 0 0; }
.cr-see-example .hint { margin: 0; }
.cr-nick label { display: grid; gap: 6px; font-weight: 700; }
.cr-nick input[name=nick] { font: inherit; min-height: 48px; padding: 8px 12px; border: var(--bw) solid var(--border); border-radius: var(--r-sm); background: var(--surface-2); color: var(--ink); width: 100%; }
.cr-locked-note { display: flex; gap: 8px; align-items: flex-start; margin: 0; color: var(--ink-2); font-weight: 600; }
.cr-shuffle { margin: 0; min-width: 0; max-width: 100%; }
.cr-shuffle > span { flex: 1 1 0; min-width: 0; overflow-wrap: anywhere; }
.cr-questions.is-locked .cr-q-del { display: none; }
@media (max-width: 600px) { .cr-today-row { flex-wrap: wrap; } .cr-today-row .btn { width: 100%; } .cr-today-actions .btn { flex: 1 1 auto; justify-content: center; } }