/* =============================================================================
 * Estilos — Plataforma de preparación Agente de Hacienda
 * Paleta: azul marino institucional + blanco + acento dorado; estados semánticos.
 * ========================================================================== */
:root {
  --navy-900: #0b1830;
  --navy-800: #0f2140;
  --navy-700: #183058;
  --navy-600: #24426f;
  --navy-100: #e6ecf5;
  --navy-50: #f2f5fa;
  --gold: #d9a441;
  --gold-soft: #fbf3e2;

  --bg: #f4f6f9;
  --surface: #ffffff;
  --ink: #16213a;
  --ink-2: #4a5670;
  --ink-3: #7a859b;
  --line: #e1e6ee;
  --line-2: #cfd7e3;

  --green: #1d7f55;  --green-bg: #e7f4ee;
  --yellow: #a87c00; --yellow-bg: #fbf3d9;
  --orange: #c4621a; --orange-bg: #fcebdc;
  --red: #b8342c;    --red-bg: #fbe9e7;

  --radius: 12px;
  --radius-sm: 8px;
  --shadow: 0 1px 2px rgba(15, 33, 64, .05), 0 4px 14px rgba(15, 33, 64, .05);
  --shadow-lg: 0 10px 40px rgba(11, 24, 48, .18);
  --sidebar-w: 252px;

  --font: "IBM Plex Sans", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --serif: "Source Serif 4", Georgia, "Times New Roman", serif;
  color-scheme: light;
}

*, *::before, *::after { box-sizing: border-box; }
[hidden] { display: none !important; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0; background: var(--bg); color: var(--ink);
  font: 15px/1.55 var(--font);
  -webkit-font-smoothing: antialiased;
}
h1, h2, h3 { font-family: var(--serif); color: var(--navy-800); line-height: 1.25; margin: 0 0 .5em; font-weight: 600; }
h1 { font-size: clamp(1.5rem, 2.6vw, 2rem); letter-spacing: -.01em; }
h2 { font-size: 1.2rem; }
h3 { font-size: 1.02rem; }
p { margin: 0 0 .8em; }
a { color: var(--navy-600); }
code { background: var(--navy-50); padding: .1em .35em; border-radius: 4px; font-size: .9em; }
small, .small { font-size: .84rem; }
.muted { color: var(--ink-3); }
.mt { margin-top: 1rem; }
.center { text-align: center; margin: 1rem 0; }
.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.skip { position: absolute; left: -999px; top: 0; background: var(--navy-800); color: #fff; padding: .5rem 1rem; z-index: 100; }
.skip:focus { left: 0; }
:focus-visible { outline: 3px solid var(--gold); outline-offset: 2px; }

/* ---------------------------------------------------------------- Layout */
.sidebar {
  position: fixed; inset: 0 auto 0 0; width: var(--sidebar-w); z-index: 40;
  background: var(--navy-800); color: #c9d4e6; display: flex; flex-direction: column;
  padding: 1.25rem .9rem; overflow-y: auto;
}
.sidebar .brand { color: #fff; text-decoration: none; display: flex; gap: .7rem; align-items: center; padding: 0 .4rem 1.2rem; }
.sidebar .brand small { display: block; color: #8fa1bf; font-size: .78rem; font-weight: 400; }
.brand-mark {
  width: 38px; height: 38px; border-radius: 10px; display: grid; place-items: center; flex: none;
  background: var(--gold); color: var(--navy-900); font-weight: 700; font-family: var(--serif); letter-spacing: .02em;
}
.nav { display: flex; flex-direction: column; gap: 2px; }
.nav a {
  display: flex; align-items: center; gap: .7rem; padding: .6rem .75rem; border-radius: 8px;
  color: #c9d4e6; text-decoration: none; font-weight: 500;
}
.nav a span { width: 1.4rem; text-align: center; filter: grayscale(.2); }
.nav a:hover { background: rgba(255,255,255,.06); color: #fff; }
.nav a.on { background: rgba(255,255,255,.1); color: #fff; box-shadow: inset 3px 0 0 var(--gold); }
.nav-sep { height: 1px; background: rgba(255,255,255,.08); margin: .6rem .4rem; }
.nav-session { display: block; margin: 0 .2rem 1rem; padding: .6rem .8rem; border-radius: 8px; background: var(--gold); color: var(--navy-900); font-weight: 600; text-decoration: none; }
.sidebar-foot { margin-top: auto; padding: 1rem .5rem 0; font-size: .76rem; color: #7d8fae; }

.topbar { display: none; }
.main { margin-left: var(--sidebar-w); padding: 2rem clamp(1rem, 3vw, 2.5rem) 4rem; max-width: calc(1180px + var(--sidebar-w)); outline: none; }
.sidebar-backdrop { display: none; }

@media (max-width: 1023px) {
  .topbar {
    display: flex; align-items: center; gap: .6rem; position: sticky; top: 0; z-index: 30;
    background: var(--navy-800); color: #fff; padding: .55rem 1rem;
  }
  .topbar .brand { color: #fff; text-decoration: none; display: flex; align-items: center; gap: .6rem; font-weight: 600; }
  .topbar .brand-mark { width: 30px; height: 30px; font-size: .85rem; border-radius: 8px; }
  .topbar .icon-btn { color: #fff; font-size: 1.3rem; }
  .sidebar { transform: translateX(-100%); transition: transform .22s ease; box-shadow: var(--shadow-lg); }
  .sidebar.open { transform: none; }
  .sidebar.open + .sidebar-backdrop { display: block; position: fixed; inset: 0; background: rgba(11,24,48,.45); z-index: 35; }
  .main { margin-left: 0; padding: 1.25rem 1rem 4rem; }
}

/* ------------------------------------------------------------- Elements */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: .4rem;
  font: 600 .92rem/1 var(--font); padding: .72rem 1.1rem; border-radius: var(--radius-sm);
  border: 1px solid transparent; cursor: pointer; text-decoration: none; white-space: nowrap;
  transition: background .15s, border-color .15s, color .15s, transform .05s;
}
.btn:active { transform: translateY(1px); }
.btn:disabled { opacity: .45; cursor: not-allowed; }
.btn.primary { background: var(--navy-800); color: #fff; }
.btn.primary:hover:not(:disabled) { background: var(--navy-700); }
.btn.ghost { background: var(--surface); color: var(--navy-800); border-color: var(--line-2); }
.btn.ghost:hover:not(:disabled) { border-color: var(--navy-600); background: var(--navy-50); }
.btn.light { background: rgba(255,255,255,.12); color: #fff; border-color: rgba(255,255,255,.28); }
.btn.light:hover { background: rgba(255,255,255,.22); }
.btn.danger { background: var(--red); color: #fff; }
.btn.sm { padding: .45rem .7rem; font-size: .83rem; }
.btn.lg { padding: .95rem 1.6rem; font-size: 1rem; }
.btn.marked { background: var(--gold-soft); border-color: var(--gold); }
.icon-btn { background: none; border: 0; cursor: pointer; font-size: 1.1rem; padding: .3rem .45rem; border-radius: 6px; color: var(--ink-2); line-height: 1; }
.icon-btn:hover { background: var(--navy-50); }
.icon-btn.fav { color: var(--ink-3); font-size: 1.25rem; }
.icon-btn.fav.on { color: var(--gold); }
.file-btn { position: relative; }

.card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 1.35rem 1.5rem; margin-bottom: 1.25rem; box-shadow: var(--shadow); }
.card-head { display: flex; justify-content: space-between; align-items: baseline; gap: 1rem; flex-wrap: wrap; }
.card-head .link { font-weight: 600; font-size: .9rem; text-decoration: none; }
.cols-2 { display: grid; grid-template-columns: 1.4fr 1fr; gap: 1.25rem; }
.cols-2 > .card { margin-bottom: 1.25rem; }
@media (max-width: 900px) { .cols-2 { grid-template-columns: 1fr; gap: 0; } .card { padding: 1.1rem 1rem; } }

.page-head { display: flex; justify-content: space-between; align-items: flex-end; gap: 1rem; flex-wrap: wrap; margin-bottom: 1.25rem; }
.page-head h1 { margin: 0 0 .2rem; }
.page-actions { display: flex; gap: .5rem; flex-wrap: wrap; }
.lead { color: var(--ink-2); margin: 0; }
.notice { background: var(--navy-50); border: 1px solid var(--navy-100); border-left: 4px solid var(--navy-600); border-radius: var(--radius-sm); padding: .85rem 1rem; margin-bottom: 1rem; color: var(--ink-2); font-size: .92rem; }

.badge { display: inline-flex; align-items: center; gap: .35rem; font-size: .76rem; font-weight: 600; padding: .22rem .55rem; border-radius: 999px; background: var(--navy-50); color: var(--ink-2); border: 1px solid var(--line); white-space: nowrap; }
.badge.tema { color: var(--navy-700); }
.badge.tipo-real { background: var(--gold-soft); color: #7a5410; border-color: #efd9a8; }
.badge.tipo-basada_en_real { background: #f1ecfa; color: #5b3f8f; border-color: #ded3f1; }
.badge.tipo-legislacion { background: #e8f0fb; color: #22508c; border-color: #cddcf2; }
.badge.tipo-practica { background: #eef3f1; color: #3f6356; border-color: #d6e3dd; }
.badge.mk, .badge.warn { background: var(--gold-soft); color: #7a5410; border-color: #efd9a8; }
.dot { width: .62rem; height: .62rem; border-radius: 50%; display: inline-block; flex: none; background: var(--ink-3); }
.dot.green { background: var(--green); } .dot.yellow { background: #e0b400; } .dot.orange { background: var(--orange); } .dot.red { background: var(--red); }
.pill { display: inline-block; padding: .18rem .55rem; border-radius: 999px; font-weight: 600; font-size: .82rem; background: var(--navy-50); color: var(--ink-2); white-space: nowrap; }
.pill.green { background: var(--green-bg); color: var(--green); } .pill.yellow { background: var(--yellow-bg); color: var(--yellow); }
.pill.orange { background: var(--orange-bg); color: var(--orange); } .pill.red { background: var(--red-bg); color: var(--red); }
.verdict { font-weight: 700; font-size: .78rem; letter-spacing: .04em; padding: .2rem .55rem; border-radius: 6px; }
.verdict.ok { background: var(--green-bg); color: var(--green); } .verdict.ko { background: var(--red-bg); color: var(--red); }
.ok-t { color: var(--green); } .ko-t { color: var(--red); }

/* --------------------------------------------------------------- Forms */
label { display: inline-flex; flex-direction: column; gap: .3rem; font-size: .85rem; font-weight: 600; color: var(--ink-2); }
input, select, textarea {
  font: 400 .95rem var(--font); color: var(--ink); background: #fff;
  border: 1px solid var(--line-2); border-radius: var(--radius-sm); padding: .55rem .7rem; min-width: 0;
}
input:focus, select:focus, textarea:focus { outline: 2px solid var(--navy-600); outline-offset: 0; border-color: var(--navy-600); }
textarea { resize: vertical; width: 100%; }
label.chk { flex-direction: row; align-items: center; gap: .45rem; font-weight: 500; color: var(--ink); cursor: pointer; }
label.chk input { width: 1.05rem; height: 1.05rem; accent-color: var(--navy-800); }
label.full, .full { width: 100%; display: flex; }
label.grow { flex: 1 1 220px; }
.form h2 { margin-top: 1.2rem; } .form h2:first-child { margin-top: 0; }
.form.narrow { max-width: 440px; display: flex; flex-direction: column; gap: 1rem; }
.form-row { display: flex; flex-wrap: wrap; gap: 1.25rem; align-items: flex-start; margin: .75rem 0; }
.form-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: .9rem 1rem; margin: .75rem 0; }
.form-grid label input, .form-grid label select { width: 100%; }
.form-grid label.full { grid-column: 1 / -1; }
.form-foot { display: flex; justify-content: space-between; align-items: center; gap: 1rem; flex-wrap: wrap; border-top: 1px solid var(--line); padding-top: 1rem; margin-top: 1rem; }
.q-editor label { margin-bottom: .6rem; }
.inline-form { display: flex; flex-wrap: wrap; gap: .75rem; align-items: flex-end; }
.filters { display: flex; flex-wrap: wrap; gap: .75rem 1rem; align-items: flex-end; margin-bottom: 1rem; }
.toolbar { display: flex; gap: .6rem; flex-wrap: wrap; margin-bottom: 1rem; }
.seg { border: 0; padding: 0; margin: 0; }
.seg legend { font-size: .85rem; font-weight: 600; color: var(--ink-2); margin-bottom: .35rem; padding: 0; }
.seg label { display: inline-block; margin: 0 .35rem .35rem 0; }
.seg input { position: absolute; opacity: 0; pointer-events: none; }
.seg span { display: inline-block; padding: .5rem .95rem; border: 1px solid var(--line-2); border-radius: 999px; background: #fff; font-weight: 600; color: var(--ink-2); cursor: pointer; }
.seg input:checked + span { background: var(--navy-800); color: #fff; border-color: var(--navy-800); }
.seg input:focus-visible + span { outline: 3px solid var(--gold); }

.tema-group { border: 1px solid var(--line); border-radius: var(--radius-sm); padding: .4rem 1rem 1rem; margin: 0 0 1rem; }
.tema-group legend { padding: 0 .4rem; }
.tema-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(230px, 1fr)); gap: .45rem 1rem; }
.tema-chk.disabled { opacity: .45; }
.picker-actions { display: flex; gap: .5rem; margin-bottom: .75rem; }

.chips { display: flex; flex-wrap: wrap; gap: .45rem; margin-bottom: 1rem; }
.chip { border: 1px solid var(--line-2); background: #fff; border-radius: 999px; padding: .45rem .85rem; font: 600 .85rem var(--font); color: var(--ink-2); cursor: pointer; }
.chip small { color: var(--ink-3); margin-left: .2rem; }
.chip.on { background: var(--navy-800); border-color: var(--navy-800); color: #fff; }
.chip.on small { color: #b9c6dc; }
.tabs { display: flex; gap: .25rem; border-bottom: 1px solid var(--line); margin-bottom: 1.25rem; overflow-x: auto; }
.tab { padding: .7rem 1rem; text-decoration: none; color: var(--ink-2); font-weight: 600; border-bottom: 3px solid transparent; white-space: nowrap; }
.tab.on { color: var(--navy-800); border-color: var(--gold); }

/* --------------------------------------------------------------- Tables */
.table-wrap { overflow-x: auto; }
.table { width: 100%; border-collapse: collapse; font-size: .92rem; }
.table th { text-align: left; font-size: .76rem; text-transform: uppercase; letter-spacing: .05em; color: var(--ink-3); font-weight: 600; padding: .6rem .7rem; border-bottom: 1px solid var(--line); white-space: nowrap; }
.table td { padding: .7rem; border-bottom: 1px solid var(--line); vertical-align: middle; }
.table .n { text-align: right; font-variant-numeric: tabular-nums; }
.table tr[data-href] { cursor: pointer; }
.table tr[data-href]:hover td { background: var(--navy-50); }
.row-act { white-space: nowrap; text-align: right; }
.row-act .btn { margin-left: .25rem; }
.clip { max-width: 520px; overflow: hidden; text-overflow: ellipsis; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; }
@media (max-width: 700px) {
  .table thead { display: none; }
  .table, .table tbody, .table tr, .table td { display: block; width: 100%; }
  .table tr { border: 1px solid var(--line); border-radius: var(--radius-sm); margin-bottom: .6rem; padding: .3rem .2rem; }
  .table td { border: 0; padding: .3rem .7rem; display: flex; justify-content: space-between; gap: 1rem; text-align: right; }
  .table td::before { content: attr(data-l); font-size: .78rem; color: var(--ink-3); font-weight: 600; text-align: left; }
  .table td.row-act { justify-content: flex-end; flex-wrap: wrap; }
  .table td.row-act::before { content: none; }
  .clip { max-width: none; text-align: left; }
}

/* ------------------------------------------------------------- Dashboard */
.dash-head { margin-bottom: 1rem; }
.dash-head .lead::first-letter { text-transform: uppercase; }
.resume { display: flex; justify-content: space-between; align-items: center; gap: 1rem; flex-wrap: wrap; background: var(--gold-soft); border: 1px solid #efd9a8; border-radius: var(--radius); padding: .9rem 1.2rem; margin-bottom: 1.25rem; }
.kpis { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: .9rem; }
.kpi { border: 1px solid var(--line); border-radius: var(--radius-sm); padding: .9rem 1rem; background: linear-gradient(180deg, #fff, var(--navy-50)); }
.kpi-v { font: 600 1.7rem/1.1 var(--serif); color: var(--navy-800); font-variant-numeric: tabular-nums; }
.kpi-l { font-size: .82rem; color: var(--ink-2); font-weight: 600; margin-top: .25rem; }
.kpi-s { font-size: .78rem; color: var(--ink-3); }
.kpi.green .kpi-v { color: var(--green); } .kpi.red .kpi-v { color: var(--red); } .kpi.yellow .kpi-v { color: var(--yellow); } .kpi.orange .kpi-v { color: var(--orange); }

.actions { display: grid; grid-template-columns: repeat(3, 1fr); gap: .9rem; margin-bottom: 1.25rem; }
.action {
  display: grid; grid-template-columns: auto 1fr; grid-template-rows: auto auto; column-gap: .9rem; align-items: center;
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 1.1rem 1.2rem;
  text-decoration: none; color: var(--ink); box-shadow: var(--shadow); transition: border-color .15s, transform .15s, box-shadow .15s;
}
.action:hover { border-color: var(--navy-600); transform: translateY(-2px); box-shadow: 0 8px 22px rgba(15,33,64,.09); }
.a-ico { grid-row: span 2; font-size: 1.7rem; width: 3rem; height: 3rem; display: grid; place-items: center; background: var(--navy-50); border-radius: 12px; }
.a-t { font-weight: 700; text-transform: uppercase; letter-spacing: .03em; font-size: .9rem; color: var(--navy-800); }
.a-s { font-size: .83rem; color: var(--ink-3); }
.action.hero { background: var(--navy-800); border-color: var(--navy-800); }
.action.hero .a-t { color: #fff; } .action.hero .a-s { color: #b9c6dc; }
.action.hero .a-ico { background: rgba(255,255,255,.1); }
@media (max-width: 900px) { .actions { grid-template-columns: 1fr 1fr; } }
@media (max-width: 520px) { .actions { grid-template-columns: 1fr; } }
.reto-done b { font: 600 1.6rem var(--serif); color: var(--navy-800); }

/* ----------------------------------------------------------------- Charts */
.chart { width: 100%; height: auto; display: block; }
.chart .gl { stroke: var(--line); stroke-width: 1; }
.chart .axis { fill: var(--ink-3); font: 11px var(--font); }
.chart .pass { stroke: var(--gold); stroke-width: 1.5; stroke-dasharray: 5 4; }
.chart .pass-t { fill: #9a6f1c; font-weight: 600; }
.chart .line { fill: none; stroke: var(--navy-700); stroke-width: 2.5; stroke-linejoin: round; }
.chart .area { fill: rgba(36, 66, 111, .08); }
.chart circle { stroke: #fff; stroke-width: 2; }
.chart circle.ok { fill: var(--green); } .chart circle.ko { fill: var(--red); }
.empty-chart { padding: 2.5rem 1rem; text-align: center; color: var(--ink-3); background: var(--navy-50); border-radius: var(--radius-sm); }
.bars { display: flex; flex-direction: column; gap: .55rem; }
.bar-row { display: grid; grid-template-columns: minmax(110px, 38%) 1fr 3.6rem; gap: .7rem; align-items: center; text-decoration: none; color: var(--ink); font-size: .9rem; }
.bar-row:hover .bar-label { text-decoration: underline; }
.bar-track { height: .6rem; background: var(--navy-50); border-radius: 999px; overflow: hidden; }
.bar-fill { display: block; height: 100%; border-radius: 999px; }
.bar-fill.green { background: var(--green); } .bar-fill.yellow { background: #e0b400; } .bar-fill.orange { background: var(--orange); } .bar-fill.red { background: var(--red); }
.bar-val { text-align: right; font-weight: 600; font-variant-numeric: tabular-nums; }

/* ------------------------------------------------------------------ Exam */
body.exam-mode .sidebar, body.exam-mode .topbar { display: none; }
body.exam-mode .main { margin-left: 0; max-width: none; padding: 0; }
.exam-bar {
  position: sticky; top: 0; z-index: 20; display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; gap: 1rem;
  background: var(--navy-800); color: #fff; padding: .7rem clamp(1rem, 3vw, 2rem);
}
.exam-bar-l { display: flex; align-items: center; gap: .7rem; min-width: 0; }
.exam-title { font-weight: 600; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.mode-tag { font-size: .72rem; font-weight: 700; text-transform: uppercase; letter-spacing: .05em; padding: .2rem .5rem; border-radius: 5px; background: rgba(255,255,255,.12); white-space: nowrap; }
.mode-tag.practica { background: var(--gold); color: var(--navy-900); }
.exam-bar-c { display: flex; align-items: center; gap: 1.2rem; font-variant-numeric: tabular-nums; }
.qcount { color: #c9d4e6; } .qcount b { color: #fff; }
.timer { font: 600 1.25rem var(--font); letter-spacing: .02em; padding: .25rem .7rem; border-radius: 8px; background: rgba(255,255,255,.08); }
.timer.low { background: #8a6410; } .timer.crit { background: var(--red); animation: pulse 1.2s infinite; }
@keyframes pulse { 50% { opacity: .75; } }
.exam-bar-r { display: flex; justify-content: flex-end; gap: .5rem; }
.exam-bar .btn.ghost { background: transparent; color: #fff; border-color: rgba(255,255,255,.3); }
.exam-bar .btn.primary { background: var(--gold); color: var(--navy-900); }
.timer-warn { text-align: center; padding: .6rem 1rem; font-weight: 600; }
.timer-warn.low { background: var(--yellow-bg); color: #7a5a00; } .timer-warn.crit { background: var(--red-bg); color: var(--red); }

.exam-body { display: grid; grid-template-columns: minmax(0, 1fr) 300px; gap: 1.5rem; max-width: 1240px; margin: 0 auto; padding: 1.5rem clamp(1rem, 3vw, 2rem) 5rem; }
.qcard { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: clamp(1.1rem, 3vw, 2rem); box-shadow: var(--shadow); }
.q-top { display: flex; justify-content: space-between; align-items: center; gap: .6rem; flex-wrap: wrap; margin-bottom: .8rem; }
.q-num { font-weight: 700; color: var(--ink-3); font-size: .85rem; text-transform: uppercase; letter-spacing: .06em; }
.q-meta { display: flex; gap: .35rem; flex-wrap: wrap; align-items: center; }
.q-text { font: 500 clamp(1.08rem, 2vw, 1.28rem)/1.5 var(--serif); color: var(--ink); margin: 0 0 1.25rem; }
.opts { display: flex; flex-direction: column; gap: .6rem; margin: 0; padding: 0; list-style: none; }
.opt {
  display: flex; align-items: flex-start; gap: .85rem; width: 100%; text-align: left;
  background: #fff; border: 1.5px solid var(--line-2); border-radius: 10px; padding: .85rem 1rem;
  font: 400 1rem/1.5 var(--font); color: var(--ink); cursor: pointer; transition: border-color .12s, background .12s;
}
button.opt:hover:not(:disabled) { border-color: var(--navy-600); background: var(--navy-50); }
.opt .letter { flex: none; width: 1.9rem; height: 1.9rem; border-radius: 50%; display: grid; place-items: center; font-weight: 700; border: 1.5px solid var(--line-2); color: var(--ink-2); background: #fff; font-size: .9rem; }
.opt-text { padding-top: .15rem; flex: 1; }
.opt.selected { border-color: var(--navy-800); background: var(--navy-50); box-shadow: inset 0 0 0 1px var(--navy-800); }
.opt.selected .letter { background: var(--navy-800); border-color: var(--navy-800); color: #fff; }
.opt.correct { border-color: var(--green); background: var(--green-bg); }
.opt.correct .letter { background: var(--green); border-color: var(--green); color: #fff; }
.opt.wrong { border-color: var(--red); background: var(--red-bg); }
.opt.wrong .letter { background: var(--red); border-color: var(--red); color: #fff; }
.opt.dim { opacity: .6; }
.opt:disabled { cursor: default; }
.opt .mine { flex: none; font-size: .72rem; font-weight: 700; text-transform: uppercase; color: var(--ink-3); align-self: center; }
.q-tools { display: flex; gap: .5rem; flex-wrap: wrap; align-items: center; margin: 1rem 0 0; }
.q-nav { display: flex; justify-content: space-between; align-items: center; gap: .6rem; margin-top: 1.4rem; padding-top: 1.1rem; border-top: 1px solid var(--line); flex-wrap: wrap; }
.q-nav .btn:last-child { margin-left: auto; }

.exam-side { position: sticky; top: 76px; align-self: start; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 1rem; box-shadow: var(--shadow); max-height: calc(100vh - 96px); overflow-y: auto; }
.side-head { display: flex; justify-content: space-between; align-items: center; margin-bottom: .5rem; }
.counters { display: flex; flex-direction: column; gap: .15rem; font-size: .85rem; color: var(--ink-2); margin-bottom: .8rem; }
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(38px, 1fr)); gap: 5px; }
.cell {
  position: relative; height: 36px; border-radius: 7px; border: 1.5px solid var(--line-2); background: #fff;
  font: 600 .82rem var(--font); color: var(--ink-2); cursor: pointer; font-variant-numeric: tabular-nums; padding: 0;
}
.cell:hover { border-color: var(--navy-600); }
.cell.ans { background: var(--navy-800); border-color: var(--navy-800); color: #fff; }
.cell.ok { background: var(--green); border-color: var(--green); color: #fff; }
.cell.ko { background: var(--red); border-color: var(--red); color: #fff; }
.cell.blank { background: #fff; }
.cell.mk::after { content: ""; position: absolute; top: -4px; right: -4px; width: 11px; height: 11px; background: var(--gold); border: 2px solid #fff; border-radius: 50%; }
.cell.cur { outline: 3px solid var(--gold); outline-offset: 1px; }
.cell.faded { opacity: .3; }
.legend { display: flex; flex-wrap: wrap; gap: .4rem .9rem; margin-top: .9rem; font-size: .76rem; color: var(--ink-3); }
.legend span { display: inline-flex; align-items: center; gap: .3rem; }
.lg { width: 12px; height: 12px; border-radius: 3px; border: 1.5px solid var(--line-2); display: inline-block; }
.lg.ans { background: var(--navy-800); border-color: var(--navy-800); } .lg.ok { background: var(--green); border-color: var(--green); }
.lg.ko { background: var(--red); border-color: var(--red); } .lg.mk { background: var(--gold); border-color: var(--gold); border-radius: 50%; }
.grid-toggle { display: none; }
.only-mobile { display: none; }

@media (max-width: 900px) {
  .exam-bar { grid-template-columns: 1fr auto; row-gap: .4rem; padding: .55rem 1rem; }
  .exam-bar-l { grid-column: 1 / -1; }
  .exam-title { font-size: .88rem; }
  .exam-bar-c { gap: .8rem; }
  .timer { font-size: 1.05rem; }
  .exam-body { grid-template-columns: 1fr; padding: 1rem .75rem 6rem; }
  .exam-side { position: fixed; inset: auto 0 0 0; top: auto; max-height: 70vh; border-radius: 16px 16px 0 0; z-index: 25; transform: translateY(105%); transition: transform .22s ease; box-shadow: var(--shadow-lg); }
  .exam-side.open { transform: none; }
  .only-mobile { display: inline-flex; }
  .grid-toggle { position: fixed; right: 1rem; bottom: 1rem; z-index: 22; background: var(--navy-800); color: #fff; box-shadow: var(--shadow-lg); border-radius: 999px; }
  .q-nav .btn { flex: 1 1 auto; }
}

/* ----------------------------------------------------------- Explicación */
.explain { margin-top: 1.2rem; border-radius: 10px; padding: 1rem 1.1rem; border: 1px solid var(--line); background: #fbfcfe; }
.explain.ok { border-color: #bfe0cf; background: #f5fbf8; }
.explain.ko { border-color: #f0c9c4; background: #fdf8f7; }
.explain-head { display: flex; justify-content: space-between; gap: .8rem; flex-wrap: wrap; margin-bottom: .55rem; }
.res { font-weight: 700; }
.res.ok { color: var(--green); } .res.ko { color: var(--red); } .res.blank { color: var(--ink-3); }
.explain-text { margin-bottom: .7rem; }
.remember { background: var(--navy-50); border-left: 3px solid var(--navy-600); padding: .55rem .8rem; border-radius: 0 6px 6px 0; margin-bottom: .6rem; font-size: .94rem; }
.trap { background: var(--gold-soft); border-left: 3px solid var(--gold); padding: .55rem .8rem; border-radius: 0 6px 6px 0; margin-bottom: .6rem; font-size: .94rem; }
.explain-src { font-size: .88rem; color: var(--ink-2); border-top: 1px dashed var(--line-2); padding-top: .55rem; margin-top: .3rem; }
.warn-norm { display: inline-block; margin-top: .4rem; background: var(--orange-bg); color: var(--orange); font-weight: 600; padding: .3rem .55rem; border-radius: 6px; font-size: .84rem; }
.answer-summary { margin: 1rem 0 0; }

/* -------------------------------------------------------------- Results */
.result-hero {
  border-radius: 16px; padding: clamp(1.4rem, 4vw, 2.4rem); color: #fff; text-align: center; margin-bottom: 1.25rem;
  background: radial-gradient(120% 140% at 50% 0%, var(--navy-600), var(--navy-900));
  box-shadow: var(--shadow-lg); position: relative; overflow: hidden;
}
.result-hero::before { content: ""; position: absolute; inset: 0 0 auto 0; height: 5px; background: var(--red); }
.result-hero.ok::before { background: #2fb37a; }
.rh-label { font-weight: 700; letter-spacing: .18em; font-size: .82rem; color: #b9c6dc; }
.rh-title { font-size: .9rem; color: #9fb0cc; margin-top: .25rem; }
.rh-grade { margin: .8rem 0 .2rem; font-family: var(--serif); }
.rh-nota { font-size: clamp(3.4rem, 10vw, 5rem); font-weight: 700; line-height: 1; }
.rh-max { font-size: 1.6rem; color: #9fb0cc; margin-left: .3rem; }
.rh-verdict { font-weight: 700; font-size: 1.15rem; letter-spacing: .06em; }
.rh-reto { margin-top: .5rem; font-size: 1.1rem; }
.rh-counts { display: flex; justify-content: center; gap: clamp(.6rem, 3vw, 2.5rem); margin: 1.4rem 0 1rem; flex-wrap: wrap; border-top: 1px solid rgba(255,255,255,.12); border-bottom: 1px solid rgba(255,255,255,.12); padding: 1rem 0; }
.rh-counts .c { display: flex; flex-direction: column; min-width: 92px; }
.rh-counts b { font: 700 2rem var(--serif); }
.rh-counts span { font-size: .78rem; text-transform: uppercase; letter-spacing: .1em; color: #c9d4e6; }
.rh-counts small { color: #9fb0cc; }
.rh-counts .ok b { color: #6fe0ad; } .rh-counts .ko b { color: #ff9b91; } .rh-counts .bl b { color: #e6ecf5; }
.rh-meta { display: flex; justify-content: center; flex-wrap: wrap; gap: .4rem 1.6rem; font-size: .88rem; color: #c9d4e6; }
.rh-meta b { color: #fff; }
.rh-actions { display: flex; justify-content: center; flex-wrap: wrap; gap: .5rem; margin-top: 1.4rem; }
.an-row { display: grid; grid-template-columns: auto 9.5rem 1fr auto 3.5rem; gap: .6rem; align-items: center; padding: .45rem 0; border-bottom: 1px solid var(--line); font-size: .92rem; }
.an-lvl { color: var(--ink-3); font-size: .8rem; }
.an-n { color: var(--ink-3); font-variant-numeric: tabular-nums; }
.an-p { text-align: right; font-variant-numeric: tabular-nums; }
@media (max-width: 520px) { .an-row { grid-template-columns: auto 1fr auto 3rem; } .an-lvl { display: none; } }
.an-extra { display: grid; grid-template-columns: repeat(4, 1fr); gap: .6rem; margin-top: 1rem; }
.an-extra div { background: var(--navy-50); border-radius: 8px; padding: .6rem; text-align: center; }
.an-extra b { display: block; font: 600 1.2rem var(--serif); color: var(--navy-800); }
.an-extra span { font-size: .74rem; color: var(--ink-3); }
@media (max-width: 520px) { .an-extra { grid-template-columns: 1fr 1fr; } }
.recs { padding-left: 1.1rem; margin: 0 0 1rem; } .recs li { margin-bottom: .6rem; }
.count { font: 600 .85rem var(--font); background: var(--navy-50); color: var(--ink-2); padding: .1rem .5rem; border-radius: 999px; vertical-align: middle; }
.rq { border-top: 1px solid var(--line); padding: 1.1rem 0; }
.rq-head { display: flex; gap: .4rem; align-items: center; flex-wrap: wrap; margin-bottom: .4rem; }
.rq-num { font-weight: 700; color: var(--navy-800); margin-right: .3rem; }
.rq-text { font: 500 1.02rem/1.5 var(--serif); }
.answer-line { display: flex; gap: .5rem; align-items: baseline; padding: .45rem .7rem; border-radius: 8px; margin-bottom: .35rem; font-size: .94rem; }
.answer-line span { font-size: .72rem; font-weight: 700; text-transform: uppercase; letter-spacing: .04em; min-width: 6.5rem; }
.answer-line.ok { background: var(--green-bg); } .answer-line.ok span { color: var(--green); }
.answer-line.ko { background: var(--red-bg); } .answer-line.ko span { color: var(--red); }
.ok-list { margin: 0; padding: 0; list-style: none; columns: 2 340px; column-gap: 2rem; }
.ok-list li { break-inside: avoid; padding: .35rem 0; border-bottom: 1px solid var(--line); font-size: .9rem; }
.ok-list a { color: var(--ink); text-decoration: none; } .ok-list a:hover { color: var(--navy-600); }

/* -------------------------------------------------------------- Review */
.review-layout { display: grid; grid-template-columns: minmax(0, 1fr) 280px; gap: 1.25rem; align-items: start; }
.review-grid { position: sticky; top: 1rem; }
@media (max-width: 900px) { .review-layout { grid-template-columns: 1fr; } .review-grid { position: static; } }
.opts.readonly .opt { cursor: default; }

/* ------------------------------------------------------------ Listas */
.qlist { display: flex; flex-direction: column; }
.qitem { border-bottom: 1px solid var(--line); }
.qitem summary { list-style: none; cursor: pointer; padding: .9rem .2rem; }
.qitem summary::-webkit-details-marker { display: none; }
.qitem summary:hover .qi-text { color: var(--navy-600); }
.qi-top { display: flex; gap: .4rem; flex-wrap: wrap; align-items: center; margin-bottom: .35rem; }
.qstat { font-size: .8rem; margin-left: auto; color: var(--ink-2); }
.qi-text { font: 500 1rem/1.5 var(--serif); }
.qitem[open] summary { padding-bottom: .4rem; }
.qi-body { padding: 0 .2rem 1.2rem; }
.qi-actions { display: flex; gap: .5rem; align-items: center; margin: .6rem 0 0; }
.practice-box { display: grid; grid-template-columns: 1fr auto; gap: 1rem; align-items: end; border-left: 4px solid var(--navy-800); }
@media (max-width: 800px) { .practice-box { grid-template-columns: 1fr; } }

/* --------------------------------------------------------- Launchers */
.sim-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1.25rem; margin-bottom: 1.25rem; }
@media (max-width: 800px) { .sim-grid { grid-template-columns: 1fr; } }
.sim-card {
  text-align: left; background: var(--surface); border: 1.5px solid var(--line); border-radius: 16px; padding: 1.6rem;
  font: inherit; color: var(--ink); box-shadow: var(--shadow); display: flex; flex-direction: column; gap: .4rem;
  transition: border-color .15s, transform .15s;
}
.sim-card:hover { border-color: var(--navy-700); }
.sim-card .sim-ico { font-size: 2rem; }
.sim-card p { color: var(--ink-2); flex: 1; }
.sim-btns { display: flex; flex-wrap: wrap; gap: .6rem; margin-top: .4rem; }
.sim-btns .btn { flex: 1 1 210px; justify-content: center; text-align: center; }
.cond { display: grid; grid-template-columns: 180px 1fr 1fr 1fr; gap: 1.2rem; font-size: .92rem; }
@media (max-width: 800px) { .cond { grid-template-columns: 1fr; } }
.repaso-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 1.25rem; }
.repaso-card { display: flex; flex-direction: column; margin: 0; }
.rc-ico { font-size: 1.8rem; }
.rc-n { margin: auto 0 .8rem; color: var(--ink-2); } .rc-n b { font: 600 1.4rem var(--serif); color: var(--navy-800); }
.rc-btns { display: flex; gap: .4rem; flex-wrap: wrap; }
.reto-main { text-align: center; padding: 2rem 1.5rem; }
.reto-main .seg { display: inline-block; }
.reto-main .form-row { justify-content: center; }
.reto-score span { display: block; color: var(--ink-2); }
.reto-score b { font: 700 3.4rem var(--serif); color: var(--navy-800); }
.reto-hist { display: flex; flex-wrap: wrap; gap: .5rem; }
.reto-chip { display: flex; flex-direction: column; align-items: center; padding: .5rem .8rem; border-radius: 10px; text-decoration: none; color: var(--ink); border: 1px solid var(--line); min-width: 92px; }
.reto-chip span { font-size: .75rem; color: var(--ink-3); }
.reto-chip.green { background: var(--green-bg); } .reto-chip.yellow { background: var(--yellow-bg); } .reto-chip.orange { background: var(--orange-bg); } .reto-chip.red { background: var(--red-bg); }

/* ---------------------------------------------------------------- Admin */
.codes { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: .3rem 1rem; font-size: .88rem; }
.import-sum { display: flex; gap: 1.5rem; margin: 1rem 0; font-size: 1.05rem; }
.err-list { max-height: 260px; overflow: auto; font-size: .88rem; color: var(--red); }
.calc { display: flex; flex-wrap: wrap; gap: .8rem; align-items: flex-end; background: var(--navy-50); padding: .9rem 1rem; border-radius: var(--radius-sm); }
.calc input { width: 90px; }
.danger-zone { border-color: #f0c9c4; }

/* ---------------------------------------------------------- Modal/Toast */
.modal-wrap { position: fixed; inset: 0; background: rgba(11, 24, 48, .5); display: grid; place-items: center; z-index: 100; padding: 1rem; animation: fade .15s; }
.modal { background: #fff; border-radius: 14px; padding: 1.5rem; width: min(480px, 100%); box-shadow: var(--shadow-lg); max-height: calc(100vh - 2rem); display: flex; flex-direction: column; }
.modal.wide { width: min(880px, 100%); }
.modal-body { overflow-y: auto; }
.modal-body label.full input { width: 100%; }
.modal-actions { display: flex; justify-content: flex-end; gap: .5rem; flex-wrap: wrap; margin-top: 1.2rem; }
.finish-sum { display: grid; grid-template-columns: 1fr 1fr; gap: .6rem; margin-bottom: .8rem; }
.finish-sum div { background: var(--navy-50); border-radius: 8px; padding: .7rem; text-align: center; font-size: .82rem; color: var(--ink-2); }
.finish-sum b { display: block; font: 700 1.5rem var(--serif); color: var(--navy-800); }
.finish-sum .warn { background: var(--gold-soft); }
@keyframes fade { from { opacity: 0; } }
.toasts { position: fixed; bottom: 1rem; left: 50%; transform: translateX(-50%); z-index: 200; display: flex; flex-direction: column; gap: .5rem; align-items: center; width: min(520px, calc(100% - 2rem)); pointer-events: none; }
.toast { background: var(--navy-900); color: #fff; padding: .75rem 1.1rem; border-radius: 10px; box-shadow: var(--shadow-lg); font-size: .92rem; transition: opacity .4s, transform .4s; text-align: center; }
.toast.error { background: var(--red); } .toast.warn { background: #8a6410; } .toast.ok { background: var(--green); }
.toast.out { opacity: 0; transform: translateY(8px); }

/* ---------------------------------------------------------------- Print */
.print-area { display: none; }
@media print {
  body.printing > *:not(.print-area) { display: none !important; }
  body.printing .print-area { display: block; color: #000; font: 11pt/1.45 var(--font); }
  .print-area h1 { font-size: 20pt; margin-bottom: 2pt; }
  .print-area h2 { font-size: 13pt; margin: 16pt 0 6pt; border-bottom: 1px solid #999; padding-bottom: 3pt; }
  .print-area .p-sub { color: #555; }
  .print-area .p-kpis { display: flex; gap: 18pt; margin: 10pt 0; }
  .print-area .p-kpis div { display: flex; flex-direction: column; font-size: 9pt; color: #444; }
  .print-area .p-kpis b { font-size: 15pt; color: #000; }
  .print-area table { width: 100%; border-collapse: collapse; font-size: 9.5pt; }
  .print-area th, .print-area td { border-bottom: 1px solid #ccc; padding: 3pt 4pt; text-align: left; }
  .print-area .p-q { break-inside: avoid; border-bottom: 1px solid #ddd; padding: 5pt 0; font-size: 9.5pt; }
  .print-area .p-q p { margin: 0 0 2pt; }
  .print-area .p-exp { color: #333; font-style: italic; }
  .print-area .p-res { font-weight: 700; font-size: 8pt; }
  .print-area .p-res.ok { color: #1d7f55; } .print-area .p-res.ko { color: #b8342c; } .print-area .p-res.blank { color: #777; }
  @page { margin: 14mm; }
}
@media (prefers-reduced-motion: reduce) { *, *::before, *::after { animation: none !important; transition: none !important; } }
.an-h { font: 600 .78rem var(--font); text-transform: uppercase; letter-spacing: .06em; color: var(--ink-3); margin: 1rem 0 .2rem; }
.an-h:first-of-type { margin-top: 0; }
.an-all { margin-top: .8rem; }
.an-all summary { cursor: pointer; font-weight: 600; color: var(--navy-600); padding: .4rem 0; }
.form-foot > span { flex: 1 1 220px; }
.form-foot .btn, .page-actions .btn, .toolbar .btn, .rc-btns .btn { flex-shrink: 0; }
@media (max-width: 520px) { .btn { white-space: normal; text-align: center; } .rh-actions .btn { flex: 1 1 45%; } }
select { max-width: 100%; text-overflow: ellipsis; }
.filters > label { max-width: 100%; }
@media (max-width: 600px) {
  .filters > label:not(.chk) { flex: 1 1 100%; }
  .filters > label select, .filters > label input { width: 100%; }
}
@media (max-width: 600px) { .form-foot > * { flex: 1 1 100%; } .form-foot .btn { width: 100%; } }
.timer, .qcount { white-space: nowrap; }
@media (max-width: 600px) {
  .exam-bar .btn.sm { padding: .4rem .6rem; font-size: .78rem; }
  .exam-bar-c { gap: .5rem; }
  .qcount { font-size: .85rem; }
  .timer { font-size: .98rem; padding: .2rem .5rem; }
  .mode-tag { font-size: .62rem; }
}
.nav-switch { display: block; margin: 1rem .2rem 0; padding: .6rem .8rem; border-radius: 8px; border: 1px dashed rgba(255,255,255,.25); color: #e6ecf5; text-decoration: none; font-weight: 600; font-size: .88rem; }
.nav-switch:hover { background: rgba(255,255,255,.06); }
.rh-eq { color: #c9d4e6; font-size: .9rem; margin-top: .2rem; }