/* =====================================================================
   BRONCO · Aula de la Beca Respiratorio INT
   Sistema visual: mismo kit de los apuntes de estudio (fondo blanco,
   tarjetas #e5e7eb, badges pastel, step-badges, código de colores fijo).
   Diseño y desarrollo: Dr. Elías Chahuán Kim
   ===================================================================== */
:root{
  --text:#111827; --text-2:#374151; --subtle:#6b7280; --faint:#9ca3af;
  --line:#e5e7eb; --line-2:#f1f5f9; --card:#ffffff; --bg:#ffffff; --side:#f8fafc;
  --brand:#1e3a8a; --brand-2:#2563eb; --brand-soft:#eff6ff;
  --ok:#16a34a; --ok-p:#dcfce7; --warn:#d97706; --warn-p:#fef3c7; --bad:#dc2626; --bad-p:#fee2e2;
  /* código de colores de los apuntes */
  --c-concepto:#2563eb;  --p-concepto:#dbeafe;
  --c-numeros:#7c3aed;   --p-numeros:#ede9fe;
  --c-mecanismo:#0d9488; --p-mecanismo:#ccfbf1;
  --c-clinica:#d97706;   --p-clinica:#fef3c7;
  --c-diagnostico:#16a34a; --p-diagnostico:#dcfce7;
  --c-imagen:#4f46e5;    --p-imagen:#e0e7ff;
  --c-tratamiento:#ea580c; --p-tratamiento:#ffedd5;
  --c-alarma:#dc2626;    --p-alarma:#fee2e2;
  --c-pronostico:#0891b2; --p-pronostico:#cffafe;
  --c-evidencia:#c026d3; --p-evidencia:#fae8ff;
  --c-int:#9f1239; --p-int:#ffe4e6;
  --r:14px; --r-s:10px;
  --shadow:0 1px 2px rgba(17,24,39,.04),0 4px 14px rgba(17,24,39,.04);
  --font:'Inter',system-ui,-apple-system,'Segoe UI',Roboto,sans-serif;
  --mono:ui-monospace,'SF Mono',Menlo,monospace;
}
*{box-sizing:border-box}
html,body{margin:0;height:100%}
body{font-family:var(--font);color:var(--text);background:var(--bg);font-size:14px;line-height:1.55;-webkit-font-smoothing:antialiased}
a{color:var(--brand-2);text-decoration:none}
a:hover{text-decoration:underline}
button,input,select,textarea{font:inherit;color:inherit}
h1{font-size:26px;line-height:1.2;margin:2px 0 6px;letter-spacing:-.015em}
h2{font-size:18px;margin:0 0 4px;letter-spacing:-.01em}
h3{font-size:15px;margin:14px 0 6px}
p{margin:4px 0 10px}
small,.small{font-size:12px}
.subtle{color:var(--subtle)} .faint{color:var(--faint)}
.mono{font-family:var(--mono)}
.hidden{display:none!important}
.row{display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.row.between{justify-content:space-between}
.grow{flex:1}
.stack>*+*{margin-top:12px}
.grid{display:grid;gap:14px}
.g2{grid-template-columns:repeat(2,minmax(0,1fr))}
.g3{grid-template-columns:repeat(3,minmax(0,1fr))}
.g4{grid-template-columns:repeat(4,minmax(0,1fr))}
.auto{grid-template-columns:repeat(auto-fill,minmax(260px,1fr))}
@media(max-width:1100px){.g4{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:760px){.g2,.g3,.g4{grid-template-columns:1fr}}

/* ---------------- Shell (estilo U-Cursos / Moodle) ---------------- */
.shell{display:grid;grid-template-columns:256px minmax(0,1fr);min-height:100vh;background:linear-gradient(90deg,var(--side) 255px,var(--line) 255px,var(--line) 256px,#fff 256px)}
.side{background:var(--side);border-right:1px solid var(--line);padding:16px 12px;position:sticky;top:0;height:100vh;overflow:auto;display:flex;flex-direction:column}
.brand{display:flex;gap:10px;align-items:center;padding:4px 6px 14px;border-bottom:1px solid var(--line);margin-bottom:10px}
.brand .logo{width:38px;height:38px;flex:none}
.brand b{display:block;font-size:15px;letter-spacing:.06em}
.brand span{display:block;font-size:11px;color:var(--subtle);line-height:1.25}
.nav-lbl{font-size:10.5px;font-weight:800;letter-spacing:.12em;text-transform:uppercase;color:var(--faint);margin:14px 8px 4px}
.nav a{display:flex;align-items:center;gap:10px;padding:8px 10px;border-radius:9px;color:var(--text-2);font-weight:550;font-size:13.5px}
.nav a:hover{background:#eef2f7;text-decoration:none}
.nav a.on{background:#fff;color:var(--brand);box-shadow:inset 0 0 0 1px var(--line),var(--shadow)}
.nav a .ic{width:18px;height:18px;flex:none;opacity:.85}
.nav a .count{margin-left:auto;font-size:11px;font-weight:700;background:var(--line-2);color:var(--subtle);padding:1px 7px;border-radius:99px}
.side .sello{margin-top:auto;padding:12px 8px 2px;border-top:1px solid var(--line);font-size:11px;color:var(--subtle);line-height:1.4}
.sello .firma{font-family:var(--font);font-size:15px;font-weight:800;letter-spacing:-.01em;line-height:1.2;margin-bottom:3px;background:linear-gradient(90deg,#1e3a8a,#0d9488);-webkit-background-clip:text;background-clip:text;color:transparent}

.main{min-width:0;display:flex;flex-direction:column}
.top{position:sticky;top:0;z-index:20;background:rgba(255,255,255,.92);backdrop-filter:blur(8px);border-bottom:1px solid var(--line);display:flex;align-items:center;gap:12px;padding:10px 22px}
.crumbs{font-size:12.5px;color:var(--subtle);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.crumbs a{color:var(--subtle)} .crumbs b{color:var(--text)}
.search{margin-left:auto;position:relative;width:min(380px,40vw)}
.search input{width:100%;border:1px solid var(--line);border-radius:10px;padding:8px 12px 8px 34px;background:#fff}
.search svg{position:absolute;left:10px;top:9px;width:16px;height:16px;color:var(--faint)}
.me{display:flex;align-items:center;gap:8px;cursor:pointer;padding:4px 6px;border-radius:10px;position:relative}
.me:hover{background:var(--line-2)}
.avatar{width:32px;height:32px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:800;font-size:12px;color:#fff;background:linear-gradient(135deg,#1e3a8a,#0d9488);flex:none}
.menu{position:absolute;right:0;top:44px;background:#fff;border:1px solid var(--line);border-radius:12px;box-shadow:0 10px 30px rgba(0,0,0,.08);min-width:220px;padding:6px;z-index:40}
.menu a,.menu button{display:block;width:100%;text-align:left;padding:8px 10px;border-radius:8px;border:0;background:none;color:var(--text-2);cursor:pointer;font-size:13px}
.menu a:hover,.menu button:hover{background:var(--line-2);text-decoration:none}
.burger{display:none;border:1px solid var(--line);background:#fff;border-radius:9px;padding:6px 8px;cursor:pointer}
.content{padding:22px 26px 60px;max-width:1240px;width:100%}
@media(max-width:900px){
  .shell{grid-template-columns:1fr;background:#fff}
  .side{position:fixed;left:0;top:0;z-index:60;width:272px;transform:translateX(-102%);transition:transform .2s;box-shadow:0 0 40px rgba(0,0,0,.15)}
  .side.open{transform:none}
  .burger{display:block}
  .content{padding:16px 16px 70px}
  .search{width:auto;flex:1}
  .me .who{display:none}
  .top{padding:10px 12px}
  .crumbs{display:none}
}
.scrim{position:fixed;inset:0;background:rgba(15,23,42,.3);z-index:55}

/* ---------------- Componentes ---------------- */
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--r);box-shadow:var(--shadow)}
.card.pad{padding:16px 18px}
.card-h{display:flex;align-items:center;gap:12px;padding:13px 18px;border-bottom:1px solid var(--line)}
.card-h h2{font-size:15.5px}
.card-h .r{margin-left:auto}
.card-b{padding:14px 18px}
.step{color:#fff;font-weight:800;font-size:13px;width:30px;height:30px;border-radius:9px;display:flex;align-items:center;justify-content:center;flex:none}
.kicker{font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--subtle);font-weight:800}
.hero{border:1px solid var(--line);border-radius:18px;padding:22px 24px;background:linear-gradient(135deg,#f8fafc 0%,#fff 55%,#f0fdfa 100%);margin-bottom:18px;position:relative;overflow:hidden}
.hero .lead{font-size:15px;color:var(--text-2);max-width:760px}
.hero .deco{position:absolute;right:-30px;top:-20px;width:220px;opacity:.09;pointer-events:none}
.chip,.badge{display:inline-flex;align-items:center;gap:5px;font-size:11px;font-weight:650;padding:2px 9px;border-radius:999px;white-space:nowrap;line-height:1.6}
.b-gray{background:#f3f4f6;color:#374151}
.b-blue{background:var(--p-concepto);color:#1e40af}
.b-violet{background:var(--p-numeros);color:#5b21b6}
.b-teal{background:var(--p-mecanismo);color:#115e59}
.b-amber{background:var(--p-clinica);color:#92400e}
.b-green{background:var(--p-diagnostico);color:#166534}
.b-indigo{background:var(--p-imagen);color:#3730a3}
.b-orange{background:var(--p-tratamiento);color:#9a3412}
.b-red{background:var(--p-alarma);color:#991b1b}
.b-cyan{background:var(--p-pronostico);color:#155e75}
.b-fuchsia{background:var(--p-evidencia);color:#86198f}
.b-rose{background:var(--p-int);color:var(--c-int)}
.b-hy{background:#fde68a;color:#78350f}
.btn{display:inline-flex;align-items:center;gap:7px;border:1px solid var(--line);background:#fff;border-radius:10px;padding:7px 13px;font-weight:600;font-size:13px;cursor:pointer;color:var(--text-2);white-space:nowrap;text-decoration:none!important}
.btn:hover{background:#f9fafb;border-color:#d1d5db}
.btn.pri{background:var(--brand);border-color:var(--brand);color:#fff}
.btn.pri:hover{background:#1e40af}
.btn.ok{background:var(--ok);border-color:var(--ok);color:#fff}
.btn.danger{color:var(--bad);border-color:#fecaca}
.btn.danger:hover{background:var(--bad-p)}
.btn.sm{padding:4px 9px;font-size:12px;border-radius:8px}
.btn.ghost{border-color:transparent;background:none}
.btn svg{width:15px;height:15px}
.btn[disabled]{opacity:.5;pointer-events:none}
.tabs{display:flex;gap:2px;border-bottom:1px solid var(--line);margin:4px 0 14px;overflow-x:auto}
.tabs button{border:0;background:none;padding:9px 14px;font-weight:600;color:var(--subtle);border-bottom:2px solid transparent;cursor:pointer;white-space:nowrap;font-size:13.5px}
.tabs button.on{color:var(--brand);border-bottom-color:var(--brand)}
.tabs button .count{font-size:11px;background:var(--line-2);border-radius:99px;padding:0 6px;margin-left:4px}
.empty{border:1.5px dashed var(--line);border-radius:var(--r);padding:26px;text-align:center;color:var(--subtle)}
.kpi{padding:14px 16px}
.kpi .n{font-size:26px;font-weight:800;letter-spacing:-.02em;line-height:1.1}
.kpi .l{font-size:12px;color:var(--subtle);font-weight:600}
.list>*{border-top:1px solid var(--line)} .list>*:first-child{border-top:0}
.li{display:flex;gap:12px;align-items:flex-start;padding:11px 18px}
.li:hover{background:#fafafa}
.li .t{font-weight:650}
.li .m{font-size:12px;color:var(--subtle)}
.dot{width:9px;height:9px;border-radius:50%;display:inline-block;flex:none}
.progress{height:6px;border-radius:99px;background:var(--line-2);overflow:hidden}
.progress>i{display:block;height:100%;background:linear-gradient(90deg,#2563eb,#0d9488);border-radius:99px}
table.tbl{width:100%;border-collapse:collapse;font-size:13px}
.tbl th{font-size:11px;letter-spacing:.06em;text-transform:uppercase;color:var(--subtle);text-align:left;padding:8px 10px;border-bottom:1px solid var(--line);background:#fafafa;position:sticky;top:0}
.tbl td{padding:8px 10px;border-bottom:1px solid var(--line-2);vertical-align:top}
.tbl tr:hover td{background:#fafcff}
.tbl-wrap{overflow:auto;border:1px solid var(--line);border-radius:12px}

/* ---------------- Formularios ---------------- */
label.f{display:block;margin-bottom:12px}
label.f>span{display:block;font-size:12.5px;font-weight:650;color:var(--text-2);margin-bottom:4px}
.inp,select.inp,textarea.inp{width:100%;border:1px solid #d1d5db;border-radius:9px;padding:8px 11px;background:#fff;outline:none}
.inp:focus{border-color:var(--brand-2);box-shadow:0 0 0 3px rgba(37,99,235,.15)}
textarea.inp{min-height:90px;resize:vertical}
.hint{font-size:11.5px;color:var(--subtle);margin-top:3px}
.err{color:var(--bad);font-size:12px;margin-top:3px}

/* ---------------- Login ---------------- */
.login{min-height:100vh;display:grid;grid-template-columns:1.1fr 1fr}
.login .art{background:radial-gradient(1200px 600px at -10% -10%,#dbeafe 0,transparent 55%),radial-gradient(900px 600px at 110% 110%,#ccfbf1 0,transparent 55%),#f8fafc;border-right:1px solid var(--line);padding:48px;display:flex;flex-direction:column;justify-content:space-between;position:relative;overflow:hidden}
.login .art .big{position:absolute;right:-60px;bottom:-40px;width:520px;opacity:.13}
.login .art h1{font-size:40px;letter-spacing:-.03em;max-width:520px}
.login .art .lead{font-size:16px;color:var(--text-2);max-width:470px}
.login .box{display:flex;align-items:center;justify-content:center;padding:32px}
.login form{width:min(380px,100%)}
.legend-row{display:flex;flex-wrap:wrap;gap:6px;margin-top:14px}
@media(max-width:860px){.login{grid-template-columns:1fr}.login .art{padding:28px;min-height:auto}.login .art h1{font-size:28px}.login .art .big{width:300px}}

/* ---------------- Temario ---------------- */
.tema-card{display:flex;flex-direction:column;overflow:hidden;transition:transform .12s,box-shadow .12s;color:inherit}
.tema-card:hover{transform:translateY(-2px);box-shadow:0 8px 24px rgba(17,24,39,.08);text-decoration:none}
.tema-card .foot{flex-wrap:nowrap}
.tema-card .band{height:6px}
.tema-card .in{padding:14px 16px;display:flex;flex-direction:column;gap:6px;flex:1}
.tema-card h3{margin:0;font-size:16px}
.tema-card .lead{font-size:12.5px;color:var(--subtle);display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.tema-card .foot{display:flex;align-items:center;gap:8px;padding:10px 16px;border-top:1px solid var(--line-2);font-size:12px;color:var(--subtle)}
.estado-sel{border:1px solid var(--line);border-radius:8px;padding:3px 6px;font-size:12px;background:#fff}
.viewer{display:grid;grid-template-columns:250px minmax(0,1fr);gap:16px;align-items:start}
.viewer .toc{position:sticky;top:70px;max-height:calc(100vh - 90px);overflow:auto}
.toc a{display:flex;gap:8px;align-items:center;padding:6px 10px;font-size:12.5px;color:var(--text-2);border-radius:8px}
.toc a:hover{background:var(--line-2);text-decoration:none}
.toc a .n{font-family:var(--mono);font-size:10.5px;color:var(--faint);width:18px}
.toc a.done{color:var(--ok)}
.frame{width:100%;border:1px solid var(--line);border-radius:var(--r);background:#fff;min-height:70vh;display:block}
.pdf-frame{width:100%;height:82vh;border:1px solid var(--line);border-radius:var(--r)}
@media(max-width:1000px){.viewer{grid-template-columns:1fr}.viewer .toc{position:static;max-height:none}}
.lector .side,.lector .top{display:none}
.lector .shell{grid-template-columns:1fr}
.lector .content{max-width:none;padding:0}
.lector .viewer{grid-template-columns:1fr}
.lector .viewer .toc,.lector .no-lector{display:none}
.lector .frame{border:0;border-radius:0}
.salir-lector{position:fixed;right:16px;bottom:16px;z-index:90;display:none}
.lector .salir-lector{display:inline-flex;box-shadow:0 6px 20px rgba(0,0,0,.15)}

/* ---------------- Comentarios ---------------- */
.cmt{display:flex;gap:10px;padding:10px 0;border-top:1px solid var(--line-2)}
.cmt:first-child{border-top:0}
.cmt .avatar{width:28px;height:28px;font-size:11px}
.cmt .who{font-weight:650;font-size:13px}
.cmt .when{font-size:11.5px;color:var(--faint);margin-left:6px}

/* ---------------- Modal / toast ---------------- */
.modal-bg{position:fixed;inset:0;background:rgba(15,23,42,.35);z-index:100;display:flex;align-items:flex-start;justify-content:center;padding:6vh 14px;overflow:auto}
.modal{background:#fff;border-radius:16px;width:min(620px,100%);box-shadow:0 25px 60px rgba(0,0,0,.2);border:1px solid var(--line)}
.modal.wide{width:min(980px,100%)}
.modal .mh{display:flex;align-items:center;gap:10px;padding:16px 20px;border-bottom:1px solid var(--line)}
.modal .mh h2{font-size:16px}
.modal .mh .x{margin-left:auto}
.modal .mb{padding:18px 20px}
.modal .mf{padding:12px 20px;border-top:1px solid var(--line);display:flex;justify-content:flex-end;gap:8px;background:#fafafa;border-radius:0 0 16px 16px}
.toasts{position:fixed;bottom:18px;left:50%;transform:translateX(-50%);z-index:200;display:flex;flex-direction:column;gap:8px;align-items:center}
.toast{background:#111827;color:#fff;padding:9px 16px;border-radius:10px;font-size:13px;box-shadow:0 8px 24px rgba(0,0,0,.2);animation:up .2s}
.toast.ok{background:#14532d}.toast.bad{background:#7f1d1d}
@keyframes up{from{opacity:0;transform:translateY(8px)}}
.drop{border:1.5px dashed #cbd5e1;border-radius:12px;padding:18px;text-align:center;color:var(--subtle);background:#fafafa;cursor:pointer}
.drop.over{border-color:var(--brand-2);background:var(--brand-soft)}

/* ---------------- Investigación (tipo REDCap) ---------------- */
.inv-layout{display:grid;grid-template-columns:270px minmax(0,1fr);gap:16px;align-items:start}
@media(max-width:1000px){.inv-layout{grid-template-columns:1fr}}
.instr a{display:flex;align-items:center;gap:9px;padding:8px 12px;border-radius:9px;color:var(--text-2);font-size:13px;font-weight:550}
.instr a:hover{background:var(--line-2);text-decoration:none}
.instr a.on{background:var(--brand-soft);color:var(--brand)}
.st0{background:#ef4444}.st1{background:#f59e0b}.st2{background:#22c55e}.stn{background:#e5e7eb;border:1px solid #cbd5e1}
.sec-crf{border:1px solid var(--line);border-radius:12px;margin-bottom:16px;overflow:hidden}
.sec-crf>.h{display:flex;align-items:center;gap:10px;padding:10px 14px;background:#fafafa;border-bottom:1px solid var(--line);font-weight:700;font-size:13.5px}
.sec-crf>.b{padding:14px;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:4px 18px}
@media(max-width:760px){.sec-crf>.b{grid-template-columns:1fr}}
.fld{padding:6px 0}
.fld.full{grid-column:1/-1}
.fld>.lb{display:flex;gap:6px;align-items:baseline;font-size:12.8px;font-weight:650;color:var(--text-2);margin-bottom:4px}
.fld>.lb .req{color:var(--bad)}
.fld>.lb .phi{font-size:9.5px;font-weight:800;letter-spacing:.05em;background:var(--p-int);color:var(--c-int);padding:0 5px;border-radius:4px}
.fld>.lb .var{margin-left:auto;font-family:var(--mono);font-size:10.5px;color:var(--faint);font-weight:400}
.fld .opts{display:flex;flex-wrap:wrap;gap:6px}
.fld .opts label{display:flex;align-items:center;gap:6px;border:1px solid var(--line);border-radius:8px;padding:5px 9px;font-size:12.5px;cursor:pointer;background:#fff}
.fld .opts label:has(input:checked){border-color:var(--brand-2);background:var(--brand-soft);color:var(--brand)}
.fld .opts input{margin:0}
.fld .unit{display:flex;align-items:center;gap:6px}
.fld .unit span{font-size:12px;color:var(--subtle);white-space:nowrap}
.fld.calc .inp{background:#f0fdfa;border-color:#99f6e4;color:#115e59;font-weight:700}
.fld .bad{border-color:var(--bad)!important;background:#fff5f5}
.rep{border:1px solid var(--line);border-radius:10px;padding:10px 12px;margin:8px 0;background:#fcfcfd}
.rep .rh{display:flex;align-items:center;gap:8px;font-size:12px;font-weight:700;color:var(--subtle);margin-bottom:6px}
.rep .rb{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:4px 14px}
@media(max-width:760px){.rep .rb{grid-template-columns:1fr}}
.matrix td,.matrix th{text-align:center}
.matrix td:first-child,.matrix th:first-child{text-align:left}
.matrix .dot{width:13px;height:13px}
.savebar{position:sticky;bottom:0;background:rgba(255,255,255,.95);backdrop-filter:blur(6px);border-top:1px solid var(--line);padding:10px 0;display:flex;gap:10px;align-items:center;flex-wrap:wrap;z-index:5}
.flow{display:flex;gap:8px;align-items:stretch;flex-wrap:wrap}
.flow .b{flex:1;min-width:120px;border:1px solid var(--line);border-radius:12px;padding:10px 12px;text-align:center}
.flow .b .n{font-size:22px;font-weight:800}
.flow .arr{align-self:center;color:var(--faint)}

/* ---------------- Markdown ---------------- */
.md h1{font-size:22px}.md h2{font-size:17px;margin-top:18px}.md h3{font-size:14.5px}
.md table{border-collapse:collapse;font-size:12.5px;margin:8px 0;width:100%}
.md td,.md th{border:1px solid var(--line);padding:5px 8px;text-align:left;vertical-align:top}
.md th{background:#fafafa}
.md code{background:var(--line-2);padding:1px 5px;border-radius:5px;font-size:12px}
.md blockquote{border-left:3px solid var(--line);margin:8px 0;padding:2px 12px;color:var(--subtle)}
mark{background:#fde68a;border-radius:3px;padding:0 2px}
@media print{.side,.top,.no-print{display:none!important}.shell{display:block}}
.login .art .logo{width:44px;height:44px;flex:none}