:root {
  --verde: #0b6b5c;
  --verde-oscuro: #084c42;
  --verde-claro: #e6f4f1;
  --dorado: #c4a35a;
  --texto: #1c2b2a;
  --muted: #5b6b69;
  --fondo: #f6f8f7;
  --blanco: #fff;
  --sombra: 0 10px 30px rgba(8, 76, 66, .08);
  --radio: 16px;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: "Segoe UI", system-ui, sans-serif;
  color: var(--texto);
  background: var(--fondo);
  line-height: 1.55;
}
a { color: var(--verde); text-decoration: none; }
.wrap { width: min(1120px, calc(100% - 32px)); margin-inline: auto; }
body[data-page="tema"] .wrap { width: min(1360px, calc(100% - 24px)); }

header {
  background: var(--blanco);
  border-bottom: 1px solid #e4ece9;
  position: sticky; top: 0; z-index: 20;
}
.nav {
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 0; gap: 16px;
}
.logo { font-weight: 800; font-size: 1.35rem; color: var(--verde-oscuro); letter-spacing: -.03em; }
.logo span { color: var(--dorado); }
.nav a.menu { color: var(--texto); font-weight: 600; margin-left: 18px; }
.nav-links { display: flex; align-items: center; flex-wrap: wrap; gap: 8px; }
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 10px 16px; border-radius: 999px; font-weight: 700; border: 0; cursor: pointer;
  font: inherit;
}
.btn-pri { background: var(--verde); color: #fff; }
.btn-pri:hover { background: var(--verde-oscuro); }
.btn-sec { background: var(--verde-claro); color: var(--verde-oscuro); }
.btn-ghost { border: 1px solid #cfe0db; background: #fff; color: var(--texto); }

.hero {
  background: linear-gradient(160deg, #084c42 0%, #0b6b5c 55%, #147d6c 100%);
  color: #fff; padding: 64px 0 56px;
}
.hero h1 { font-size: clamp(1.8rem, 4vw, 2.8rem); line-height: 1.15; max-width: 18ch; }
.hero p { margin: 16px 0 28px; max-width: 58ch; color: #d7efe9; }
.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; }
.hero .btn-pri { background: var(--dorado); color: #1c2b2a; }
.pills { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 28px; }
.pill { background: rgba(255,255,255,.12); padding: 6px 12px; border-radius: 999px; font-size: .85rem; }

section { padding: 56px 0; }
h2 { font-size: 1.7rem; margin-bottom: 8px; }
.lead { color: var(--muted); margin-bottom: 28px; }

.grid { display: grid; gap: 16px; }
.grid-3 { grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); }
.card {
  background: var(--blanco); border-radius: var(--radio); box-shadow: var(--sombra);
  padding: 22px; border: 1px solid #e8efed;
}
.card h3 { margin-bottom: 6px; }
.tag { display: inline-block; font-size: .75rem; font-weight: 700; color: var(--verde); background: var(--verde-claro); padding: 3px 8px; border-radius: 999px; margin-bottom: 10px; }
.tag-oro { color: #7a5b12; background: #fff3d4; }

footer { background: var(--verde-oscuro); color: #cfe4df; padding: 28px 0; font-size: .92rem; }
footer a { color: #fff; }

.form { display: grid; gap: 12px; max-width: 380px; }
input, select {
  width: 100%; padding: 12px 14px; border-radius: 10px; border: 1px solid #c9d8d4; font: inherit;
}
.tema { background: #fff; padding: 24px; border-radius: var(--radio); box-shadow: var(--sombra); margin-bottom: 28px; }
.tema h3 { margin: 8px 0 12px; }
.tema .enunciado { font-style: italic; color: var(--muted); margin-bottom: 16px; }
.tema ul { margin: 8px 0 16px 18px; }
.tema li { margin: 6px 0; }
.pregunta { margin: 10px 0; padding-bottom: 8px; border-bottom: 1px solid #eef3f1; line-height: 1.5; text-align: left; }
.opciones { display: block; margin: 6px 0 0; max-width: 52rem; }
.opcion {
  display: block !important;
  width: auto;
  margin: 0 0 2px;
  padding: 2px 4px;
  border-radius: 6px;
  cursor: pointer;
  line-height: 1.5;
  text-align: left;
}
.opcion input[type="radio"] {
  display: inline-block;
  width: auto;
  margin: 0 8px 0 0;
  vertical-align: middle;
  float: none;
}
.opcion .letra,
.opcion .txt {
  display: inline;
  float: none;
  width: auto;
  flex: none;
}
.opcion .letra { font-weight: 700; margin-right: 6px; }
.pregunta label.opcion:hover { background: var(--verde-claro); }
.ok { color: #0b6b5c; font-weight: 700; margin-top: 12px; }
.ko { color: #a33; font-weight: 700; margin-top: 12px; }
.aviso { background: #fff7e6; border: 1px solid #ead7a0; padding: 12px 14px; border-radius: 10px; margin: 16px 0 24px; }
.lock { opacity: .55; }
.cat-nav { display: flex; gap: 8px; flex-wrap: wrap; margin: 8px 0 24px; }
.cat-nav a {
  background: #fff; border: 1px solid #d5e4e0; border-radius: 999px;
  padding: 6px 12px; font-size: .9rem; font-weight: 600; color: var(--texto);
}
.cat-nav a:hover, .cat-nav a.active { background: var(--verde); color: #fff; border-color: var(--verde); }
.meta { font-size: .88rem; color: var(--muted); margin-bottom: 12px; }
.origen { font-size: .78rem; color: var(--muted); margin-top: 4px; }
.detalle { display: none; margin-top: 8px; font-size: .92rem; color: var(--muted); }
.detalle.visible { display: block; }
.tabs { display: flex; gap: 6px; flex-wrap: wrap; margin: 8px 0 20px; }
.tab {
  border: 1px solid #d5e4e0; background: #fff; border-radius: 999px;
  padding: 8px 14px; font: inherit; font-weight: 700; cursor: pointer; color: var(--texto);
}
.tab.activa, .tab[aria-selected="true"] { background: var(--verde); color: #fff; border-color: var(--verde); }
.tabpanel { display: none; }
.tabpanel.activa { display: block; }
.capitulo-sec { margin: 18px 0; padding-top: 8px; border-top: 1px solid #eef3f1; }
.capitulo-sec h4 { margin-bottom: 8px; }
.pregunta label.bien { background: #e6f4f1; outline: 2px solid #0b6b5c; }
.pregunta label.mal { background: #fdecec; }
.pregunta label.solucion { outline: 2px solid var(--dorado); }
.feedback { margin-top: 10px; font-size: .92rem; padding: 10px 12px; border-radius: 8px; }
.ok-fb { background: #e6f4f1; color: var(--verde-oscuro); }
.ko-fb { background: #fff4f4; color: #7a2e2e; }
.pill-nav { background: var(--verde-claro); color: var(--verde-oscuro); padding: 6px 12px; border-radius: 999px; font-size: .85rem; font-weight: 700; }
.temario-lista { list-style: none; margin: 12px 0 28px; }
.temario-lista li { background: #fff; border: 1px solid #e8efed; border-radius: 10px; padding: 10px 14px; margin: 8px 0; }
.temario-lista li.abierto { border-color: var(--dorado); }
.temario-lista li.hecho { border-color: var(--verde); }
.temario-lista li.pendiente { color: var(--muted); }
.indice { margin-top: 32px; }
.tema-nav { display: flex; justify-content: space-between; gap: 12px; align-items: center; flex-wrap: wrap; margin: 8px 0 20px; }
#visor-host { position: relative; }
.visor { background: #fff; border-radius: var(--radio); box-shadow: var(--sombra); overflow: hidden; border: 1px solid #e8efed; }
.visor-bar { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; justify-content: space-between; padding: 12px 16px; border-bottom: 1px solid #e8efed; }
.visor-ctrls { display: flex; gap: 8px; align-items: center; }
.visor-lienzo {
  position: relative; background: #edf2f0; padding: 12px;
  text-align: center; user-select: none;
  height: min(82vh, 980px); overflow: auto; overscroll-behavior: contain;
}
.visor-lienzo canvas { max-width: 100%; height: auto; box-shadow: 0 8px 24px rgba(0,0,0,.12); }
.visor-marca {
  position: absolute; inset: 0; display: flex; align-items: center; justify-content: center;
  pointer-events: none; font-size: 2.2rem; font-weight: 800; color: rgba(8,76,66,.12);
  transform: rotate(-24deg);
}
.visor-aviso { margin: 0; border-radius: 0; border-left: 0; border-right: 0; }
.visor-frame { width: 100%; height: 76vh; border: 0; background: #edf2f0; }
.zoom-inner { transform-origin: top center; display: inline-block; min-width: 100%; }
.visor-nota { font-size: .85rem; color: var(--muted); margin-top: 8px; }
.pdf-acciones { display: flex; gap: 8px; flex-wrap: wrap; justify-content: center; padding: 10px 12px 0; }
.crono-bar {
  position: sticky; top: 0; z-index: 5;
  display: flex; justify-content: space-between; align-items: center; gap: 12px;
  background: var(--verde); color: #fff; padding: 10px 16px; border-radius: 10px; margin-bottom: 16px;
}
.crono-bar.urgente { background: #a33; }
.es-reserva { background: #fffaf0; padding: 8px; border-radius: 8px; }
.visor-grid { display: grid; grid-template-columns: 1fr 220px; gap: 0; }
.pagina-wrap { position: relative; display: inline-block; max-width: none; transform-origin: top center; }
.pagina-img { width: 100%; max-width: none; height: auto; box-shadow: 0 8px 24px rgba(0,0,0,.12); cursor: crosshair; background: #fff; }
.pin {
  position: absolute; transform: translate(-50%, -50%);
  border: 0; background: #fff; width: 32px; height: 32px;
  border-radius: 50%; font-size: 1.15rem; cursor: pointer; line-height: 32px;
  box-shadow: 0 4px 10px rgba(0,0,0,.2); padding: 0;
}
.marca-ico { margin-right: 4px; }
.picker-marca {
  position: absolute; right: 16px; top: 70px; z-index: 8;
  background: #fff; border: 1px solid #d5e4e0; border-radius: 12px;
  padding: 12px; box-shadow: 0 10px 30px rgba(0,0,0,.12); width: 260px;
}
.picker-marca p { margin: 0 0 8px; font-weight: 700; }
.picker-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 6px; }
.picker-ico {
  border: 1px solid #e8efed; background: #f4f8f6; border-radius: 8px;
  padding: 6px 4px; cursor: pointer; font: inherit; font-size: 1.2rem;
}
.picker-ico small { display: block; font-size: .7rem; color: var(--muted); }
.picker-nota { display: block; margin: 10px 0 6px; font-size: .85rem; }
.picker-nota input { display: block; width: 100%; margin-top: 4px; padding: 6px; }
.marcas-box { background: #f4f8f6; padding: 14px; border-left: 1px solid #e8efed; text-align: left; height: min(82vh, 980px); overflow: auto; }
.marcas-box h4 { margin: 0 0 8px; }
.marcas-box ul { list-style: none; margin: 0; padding: 0; }
.marcas-box li { font-size: .85rem; margin: 8px 0; }
.linkish { background: none; border: 0; color: var(--verde); cursor: pointer; text-decoration: underline; padding: 0; font: inherit; }
@media (max-width: 900px) {
  .visor-grid { grid-template-columns: 1fr; }
}
@media (max-width: 720px) {
  .nav-links .menu { display: none; }
  .hero { padding: 40px 0; }
}
#vista-box { position: fixed; right: 16px; bottom: 16px; z-index: 40; }
.vista-toggle {
  width: 46px; height: 46px; border-radius: 50%; border: 0; cursor: pointer;
  background: var(--verde); color: #fff; font-weight: 800; font-size: 1rem;
  box-shadow: 0 8px 20px rgba(0,0,0,.18);
}
.vista-panel {
  position: absolute; right: 0; bottom: 56px; width: 220px;
  background: var(--blanco); border: 1px solid #d5e4e0; border-radius: 12px;
  padding: 12px; box-shadow: 0 10px 30px rgba(0,0,0,.12);
}
.vista-panel label, .vista-panel select { display: block; width: 100%; margin: 8px 0; }
.vista-fila { display: flex; align-items: center; justify-content: space-between; gap: 8px; margin: 8px 0; }
.vista-fila button { padding: 6px 10px; border-radius: 8px; border: 1px solid #d5e4e0; background: #fff; cursor: pointer; font: inherit; font-weight: 700; }

body.noche {
  --verde: #7ad4c4;
  --verde-oscuro: #c8efe7;
  --verde-claro: #16312d;
  --texto: #e8f2f0;
  --muted: #9bb4b0;
  --fondo: #101918;
  --blanco: #182422;
  background: #101918;
  color: #e8f2f0;
}
body.noche header, body.noche .tema, body.noche .card, body.noche .visor,
body.noche .form, body.noche .aviso, body.noche .marcas-box, body.noche .vista-panel {
  background: #182422;
  border-color: #2a403c;
  color: #e8f2f0;
}
body.noche .pregunta { border-color: #2a403c; }
body.noche .opcion { color: #e8f2f0; }
body.noche input, body.noche select, body.noche textarea {
  background: #101918; color: #e8f2f0; border-color: #2a403c;
}
body.noche .visor-lienzo { background: #0c1413; }
body.noche .btn-ghost { color: #e8f2f0; }
body.noche .crono-bar { background: #0b6b5c; }
.tabla-users { width: 100%; border-collapse: collapse; margin: 24px 0 48px; background: var(--blanco); }
.tabla-users th, .tabla-users td { text-align: left; padding: 10px 12px; border-bottom: 1px solid #e8efed; vertical-align: top; }
.tabla-users th { font-size: .85rem; color: var(--muted); }