:root {
  --pri: #357A97; --pri-d: #1F4E61; --pri-l: #E3EFF4; --grey: #EDEDED; --grey-d: #9A9A9A;
  --ink: #1E2326; --crit: #C0392B; --crit-l: #F6D5D1; --ok: #2E7D32; --warn: #B26A00; --buf: #7A7A7A;
  --left: 604px; --row: 26px;
  font-family: "Lato", "Segoe UI", system-ui, -apple-system, sans-serif;
}
* { box-sizing: border-box; }
body { margin: 0; color: var(--ink); background: #fff; font-size: 14px; }
h1, h2, h3 { font-family: "Poppins", "Lato", system-ui, sans-serif; color: var(--pri); margin: 0 0 .4em; }
h1 { font-size: 1.25rem; } h2 { font-size: 1.1rem; } h3 { font-size: .98rem; margin-top: .9em; }
button { font: inherit; border: 1px solid #c9d6dc; background: #fff; color: var(--pri-d); border-radius: 5px; padding: .38rem .7rem; cursor: pointer; }
button:hover { background: var(--pri-l); }
button.primary { background: var(--pri); color: #fff; border-color: var(--pri); }
button.primary:hover { background: var(--pri-d); }
button.warn { color: #8a2b20; border-color: #e3b9b3; }
button:disabled { opacity: .45; cursor: not-allowed; }
input, select, textarea { font: inherit; border: 1px solid #c9d6dc; border-radius: 4px; padding: .3rem .4rem; }
code { background: var(--grey); padding: 0 .25em; border-radius: 3px; }
.hint { color: #556; font-size: .9em; }

.topbar { display: flex; align-items: center; gap: 1rem; padding: .55rem 1rem; border-bottom: 3px solid var(--pri); }
.topbar .brand { display: flex; gap: .6rem; align-items: center; }
.topbar .logo { height: 34px; width: auto; }
.topbar .title { flex: 1; min-width: 0; }
.topbar .sub { margin: 0; color: #556; font-size: .88rem; }
.savestate { font-size: .82rem; padding: .3rem .6rem; border-radius: 4px; background: var(--grey); max-width: 280px; }
.savestate.ok { background: #E6F2E7; color: var(--ok); } .savestate.err { background: var(--crit-l); color: var(--crit); } .savestate.pending { background: #FFF3DD; color: var(--warn); }

.banner { padding: .45rem 1rem; font-size: .9rem; border-bottom: 1px solid #ddd; }
.banner.work { background: #FFF6E0; } .banner.info { background: var(--pri-l); } .banner.err { background: var(--crit-l); }

.kpis { display: grid; grid-template-columns: repeat(6, minmax(0, 1fr)); gap: .5rem; padding: .6rem 1rem; }
.kpi { background: var(--grey); border-radius: 6px; padding: .45rem .65rem; border-left: 4px solid var(--grey-d); display: flex; flex-direction: column; min-width: 0; }
.kpi .lbl { font-size: .74rem; text-transform: uppercase; letter-spacing: .04em; color: #556; }
.kpi .val { font-family: "Poppins", system-ui, sans-serif; font-size: 1.35rem; font-weight: 700; color: var(--pri-d); }
.kpi .det { font-size: .78rem; color: #445; }
.kpi.good { border-left-color: var(--ok); } .kpi.warn { border-left-color: var(--warn); } .kpi.bad { border-left-color: var(--crit); background: #FBEDEB; }
.kpi.bad .val { color: var(--crit); }

.toolbar { display: flex; flex-wrap: wrap; gap: .4rem; align-items: center; padding: .3rem 1rem .5rem; border-bottom: 1px solid #e3e3e3; }
.toolbar .sep { flex: 1; }
.toolbar .chk { font-size: .86rem; display: flex; gap: .25rem; align-items: center; }
.toolbar .viewsel { font-size: .86rem; }

main.work { display: grid; grid-template-columns: minmax(0, 1fr) 320px; height: calc(100vh - 225px); min-height: 420px; }
.gantt { overflow: auto; position: relative; border-right: 1px solid #ddd; }
.ginner { position: relative; }
.ghead { display: flex; position: sticky; top: 0; z-index: 5; background: #fff; border-bottom: 2px solid var(--pri); }
.grow { display: flex; height: var(--row); border-bottom: 1px solid #f0f0f0; cursor: pointer; }
.grow:hover .gl { background: #F5FAFC; }
.grow.sel .gl { background: var(--pri-l); }
.gl { position: sticky; left: 0; z-index: 3; width: var(--left); flex: 0 0 var(--left); display: flex; align-items: center; background: #fff; border-right: 1px solid #ddd; font-size: .78rem; }
.gl.hdr { font-weight: 700; color: var(--pri-d); background: #fff; height: 30px; }
.gl > span { padding: 0 .3rem; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.c-code { width: 54px; flex: 0 0 54px; font-variant-numeric: tabular-nums; }
.c-name { flex: 1 1 auto; min-width: 120px; }
.c-dur { width: 50px; flex: 0 0 50px; text-align: right; }
.c-pred { width: 96px; flex: 0 0 96px; }
.c-cost { width: 70px; flex: 0 0 70px; text-align: right; font-variant-numeric: tabular-nums; }
.c-es, .c-ef { width: 48px; flex: 0 0 48px; font-variant-numeric: tabular-nums; }
.c-fl { width: 38px; flex: 0 0 38px; padding-right: .4rem !important; text-align: right; font-variant-numeric: tabular-nums; }
.gl input { width: 100%; padding: 1px 2px; font-size: .8rem; height: 21px; }
.c-dur input { text-align: right; }
.tog { border: 0; background: transparent; padding: 0 .15rem; color: var(--pri-d); }
.grow.lvl1 .gl { font-weight: 700; background: #F4F7F8; } .grow.lvl1 .c-name { color: var(--pri-d); }
.grow.lvl2 .gl { font-weight: 700; }
.grow.lvl2 .c-name { padding-left: .8rem; } .grow.lvl3 .c-name { padding-left: 1.6rem; }
.grow.crit .c-fl { color: var(--crit); font-weight: 700; }
.grow.changed .c-code { box-shadow: inset 4px 0 0 var(--warn); }
.gt { position: relative; flex: 0 0 auto; background-image: linear-gradient(to right, #eee 1px, transparent 1px); background-size: calc(var(--dw, 13px) * 5) 100%; }
.gt.hdr { height: 30px; background: #fff; }
.wk { position: absolute; top: 6px; font-size: .75rem; color: #556; text-align: center; border-left: 1px solid #ddd; }
.bar { position: absolute; top: 6px; height: 14px; background: var(--pri); border-radius: 3px; color: #fff; font-size: .68rem; line-height: 14px; padding-left: 3px; overflow: hidden; white-space: nowrap; z-index: 2; }
.bar.crit { background: var(--crit); }
.bar.buf { background: repeating-linear-gradient(135deg, var(--buf), var(--buf) 4px, #a9a9a9 4px, #a9a9a9 8px); }
.bar.buf.crit { box-shadow: 0 0 0 2px var(--crit); }
.bar.sum { top: 9px; height: 7px; background: var(--pri-d); border-radius: 0; }
.bar.mil { width: 14px; height: 14px; transform: rotate(45deg); background: var(--pri-d); border-radius: 1px; top: 6px; padding: 0; }
.bar.mil.crit { background: var(--crit); }
.bbar { position: absolute; top: 20px; height: 4px; background: #b5b5b5; z-index: 1; border-radius: 2px; }
.bbar.mil { width: 8px; height: 8px; transform: rotate(45deg); top: 17px; }
.float { position: absolute; top: 12px; height: 3px; border-top: 2px dotted #6b9db2; z-index: 1; }
.mlbl { position: absolute; top: 5px; font-size: .72rem; font-weight: 700; color: var(--crit); white-space: nowrap; }
.vline { position: absolute; top: 0; bottom: 0; width: 0; border-left: 2px dashed var(--crit); z-index: 4; pointer-events: none; }
.vline span { position: sticky; top: 34px; display: inline-block; background: #fff; color: var(--crit); font-size: .7rem; font-weight: 700; padding: 1px 4px; border: 1px solid var(--crit); margin-left: 2px; white-space: nowrap; }
.vline.status { border-left-color: #1565C0; } .vline.status span { color: #1565C0; border-color: #1565C0; }

.panel { overflow: auto; padding: .5rem .8rem 1.5rem; background: #FAFBFB; }
.tabs { display: flex; flex-wrap: wrap; gap: .2rem; position: sticky; top: -8px; background: #FAFBFB; padding: .3rem 0; z-index: 2; }
.tabs button { padding: .25rem .5rem; font-size: .84rem; }
.tabs button.on { background: var(--pri); color: #fff; border-color: var(--pri); }
.facts { display: grid; grid-template-columns: 110px 1fr; gap: .15rem .5rem; font-size: .86rem; margin: .4rem 0; }
.facts dt { color: #556; } .facts dd { margin: 0; }
.fld { display: flex; flex-direction: column; gap: .2rem; margin: .5rem 0; font-size: .86rem; color: #334; }
.preds { border: 1px solid #dde; border-radius: 6px; padding: .3rem .5rem; margin: .5rem 0; font-size: .84rem; }
.prow { display: flex; gap: .3rem; align-items: center; justify-content: space-between; margin: .2rem 0; }
.prow span { flex: 1; } .prow input[type=number] { width: 58px; } .prow.add input { flex: 1; }
.btns { display: flex; gap: .4rem; flex-wrap: wrap; margin-top: .6rem; }
.card { background: #fff; border: 1px solid #dde4e8; border-radius: 6px; padding: .45rem .6rem; margin: .45rem 0; font-size: .86rem; }
.card ul { margin: .3rem 0; padding-left: 1.1rem; }
.mini { border-collapse: collapse; width: 100%; font-size: .8rem; margin: .3rem 0; }
.mini th, .mini td { border: 1px solid #dde; padding: .2rem .3rem; text-align: left; vertical-align: top; }
.mini th { background: var(--pri-l); color: var(--pri-d); }
.mini tr.late td { background: #FBEDEB; }
ol.diff { padding-left: 1.2rem; font-size: .86rem; }
.legend { list-style: none; padding: 0; font-size: .85rem; } .legend li { margin: .15rem 0; }
.sw { display: inline-block; width: 22px; height: 10px; border-radius: 2px; vertical-align: middle; margin-right: .3rem; }
.sw.crit { background: var(--crit); } .sw.norm { background: var(--pri); } .sw.flt { border-top: 2px dotted #6b9db2; height: 2px; }
.sw.buf { background: repeating-linear-gradient(135deg, var(--buf), var(--buf) 4px, #a9a9a9 4px, #a9a9a9 8px); } .sw.base { background: #b5b5b5; height: 4px; }
dialog { border: 1px solid #ccd; border-radius: 8px; width: min(520px, 94vw); }
dialog .fld input, dialog .fld textarea, dialog .fld select { width: 100%; }
.toast { position: fixed; bottom: 1rem; left: 50%; transform: translateX(-50%); background: #263238; color: #fff; padding: .55rem .9rem; border-radius: 6px; max-width: min(760px, 92vw); z-index: 50; font-size: .9rem; }
.toast.err { background: var(--crit); } .toast.ok { background: var(--ok); } .toast.warn { background: var(--warn); }
.fatal { padding: 2rem; }
body.readonly .toolbar #bReset, body.readonly .toolbar #bPrueba, body.readonly .toolbar #bAlt, body.readonly .toolbar #bDeshacer { display: none; }

/* Pantalla mediana */
.toolbar .cuaderno-gantt { color: var(--pri-d); font-size: .86rem; font-weight: 700; padding: .35rem .45rem; white-space: nowrap; }
@media (max-width: 1280px) {
  :root { --left: 500px; }
  .c-es, .c-ef { display: none; }
  .kpis { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  main.work { grid-template-columns: minmax(0, 1fr) 330px; height: calc(100vh - 280px); }
}
/* Pantalla pequeña: el panel pasa debajo y la tabla se reduce */
@media (max-width: 820px) {
  :root { --left: 250px; }
  .c-pred, .c-cost { display: none; }
  .c-code { width: 52px; flex-basis: 52px; }
  .kpis { grid-template-columns: repeat(2, minmax(0, 1fr)); padding: .4rem .5rem; }
  .kpi .val { font-size: 1.1rem; }
  .topbar { flex-wrap: wrap; gap: .4rem; padding: .5rem; }
  .topbar .brand { width: 100%; }
  .topbar .title { flex: 1 1 100%; }
  .savestate { max-width: 100%; }
  .topbar .logo { height: 24px; } .topbar h1 { font-size: 1rem; }
  main.work { display: block; height: auto; min-height: 0; }
  .gantt { height: 62vh; border-right: 0; border-bottom: 1px solid #ddd; }
  .panel { max-height: none; }
  .toolbar { padding: .3rem .5rem; }
  .toolbar .sep { display: none; }
}

/* Páginas simples (entrada, curso, docente) */
.page { max-width: 1100px; margin: 0 auto; padding: 1rem 1.2rem 3rem; }
.page section { margin: 1.4rem 0; }
.grid2 { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: .8rem; }
.tile { background: var(--grey); border-radius: 8px; padding: .8rem 1rem; }
.tile h3 { margin-top: 0; }
table.data { border-collapse: collapse; width: 100%; font-size: .9rem; }
table.data th, table.data td { border-bottom: 1px solid #ddd; padding: .35rem .4rem; text-align: left; vertical-align: top; }
table.data th { color: var(--pri-d); background: var(--pri-l); }
.num { text-align: right; font-variant-numeric: tabular-nums; }
.pill { display: inline-block; padding: .1rem .5rem; border-radius: 999px; background: var(--pri-l); color: var(--pri-d); font-size: .8rem; }
.pill.bad { background: var(--crit-l); color: var(--crit); } .pill.good { background: #E6F2E7; color: var(--ok); }
.phases { display: flex; gap: .4rem; flex-wrap: wrap; }
.phases button.on { background: var(--pri); color: #fff; }

body.nopanel main.work { grid-template-columns: minmax(0, 1fr) 0; }
body.nopanel .panel { display: none; }
.scrollx { overflow-x: auto; }
.mini.cmp td, .mini.cmp th { white-space: nowrap; }
.mini.cmp td:first-child { white-space: normal; min-width: 70px; }
body.nocrit .bar.crit { background: var(--pri); }
body.nocrit .bar.mil.crit { background: var(--pri-d); }
body.nocrit .grow.crit .c-fl { color: inherit; }