/* Página de curso: Excel Plus. Identidad propia: la grilla de celdas, la barra de fórmulas y el verde de Excel.
   Detalle tipográfico: cada paso se numera como una celda (A1, A2...) con letra de planilla. */
.c-excel-plus {
  --xl: #1d7044; --xl-soft: #e3f1e8; --xl-cell: #ffffff; --xl-hd: #eef2ee; --xl-grid: #d6ddd8;
  --xl-r1: #2f6fd6; --xl-r2: #c2462e; --xl-r3: #1d7044;
  --xl-font: "Segoe UI", Calibri, "Helvetica Neue", Arial, sans-serif;
}
:root[data-theme="dark"] .c-excel-plus { --xl: #5fd39a; --xl-soft: #163626; --xl-cell: #0f1d2a; --xl-hd: #162a3b; --xl-grid: #263d52; --xl-r1: #7aa8ff; --xl-r2: #ef7a62; --xl-r3: #5fd39a; }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .c-excel-plus { --xl: #5fd39a; --xl-soft: #163626; --xl-cell: #0f1d2a; --xl-hd: #162a3b; --xl-grid: #263d52; --xl-r1: #7aa8ff; --xl-r2: #ef7a62; --xl-r3: #5fd39a; }
}

.c-excel-plus .c-hero h1 { font-size: clamp(2.1rem, 1.2rem + 2.8vw, 3.5rem); max-width: 18ch; }
.c-excel-plus .c-hero h1 em, .c-excel-plus h2 em { color: var(--xl); }
.c-excel-plus .c-btn-big { background: var(--xl); border-color: var(--xl); }
:root[data-theme="dark"] .c-excel-plus .c-btn-big { color: #08200f; }
@media (prefers-color-scheme: dark) { :root:not([data-theme="light"]) .c-excel-plus .c-btn-big { color: #08200f; } }
.c-excel-plus .c-solo-emp {
  display: inline-flex; align-items: center; gap: 8px; margin: 0; padding: 5px 12px 5px 10px; border-radius: 6px;
  font-size: .8rem; font-weight: 600; color: var(--xl); background: var(--xl-soft); border: 1px solid color-mix(in srgb, var(--xl) 35%, transparent);
}
.c-excel-plus .c-solo-emp::before { content: ""; width: 10px; height: 10px; border-radius: 2px; background: var(--xl); }

/* Paso numerado como celda */
.c-excel-plus .cs-step-n {
  justify-self: start; min-width: 3.2em; padding: 3px 10px; font-family: var(--xl-font); font-size: .82rem; font-weight: 700; letter-spacing: 0;
  color: var(--xl); background: var(--xl-cell); border: 2px solid var(--xl); box-shadow: 3px 3px 0 -1px var(--xl);
}

/* ---------- Portada: barra de fórmulas flotante ---------- */
.xp-fx {
  position: absolute; left: -24px; bottom: -26px; width: min(80%, 340px); border-radius: 10px; overflow: hidden;
  background: var(--xl-cell); border: 1px solid var(--xl-grid); box-shadow: 0 22px 44px -18px rgba(10, 40, 25, .5);
  font-family: var(--xl-font); animation: c-in .8s .5s cubic-bezier(.2, .8, .2, 1) both;
}
.xp-fx-bar, .xp-formulabar { display: flex; align-items: center; gap: 8px; padding: 7px 10px; border-bottom: 1px solid var(--xl-grid); font-size: .82rem; white-space: nowrap; overflow: hidden; }
.xp-fx-ref { flex: none; min-width: 3em; padding: 1px 6px; border: 1px solid var(--xl-grid); border-radius: 3px; font-size: .9em; color: var(--muted); text-align: center; }
.xp-fx-bar i, .xp-formulabar i { flex: none; font-family: Georgia, "Times New Roman", serif; font-style: italic; font-weight: 700; color: var(--muted); }
.xp-fx-bar code, .xp-formulabar code { font-family: var(--xl-font); color: var(--ink); overflow: hidden; text-overflow: ellipsis; }
.xp-caret { flex: none; width: 1.5px; height: 1.1em; margin-left: -6px; background: var(--ink); animation: xp-blink 1s steps(1) infinite; }
.xp-fx-cell { display: flex; align-items: baseline; justify-content: space-between; gap: 12px; padding: 10px 12px; }
.xp-fx-cell small { font-size: .76rem; color: var(--muted); }
.xp-fx-cell b { font-family: var(--f-display); font-size: 1.35rem; color: var(--xl); padding: 1px 6px; outline: 2px solid var(--xl); outline-offset: 1px; transition: opacity .3s; }
.xp-fx-cell b.wait { opacity: 0; }
@keyframes xp-blink { 50% { opacity: 0; } }

/* ---------- Historia: base de planilla ---------- */
.c-excel-plus .cs-stage { container-type: inline-size; background: var(--surface); }
.c-excel-plus .scene { font-size: clamp(9.5px, 2.75cqw, 17px); }
.c-excel-plus .s1 { background: repeating-linear-gradient(90deg, transparent 0 59px, color-mix(in srgb, var(--xl-grid) 55%, transparent) 59px 60px), repeating-linear-gradient(0deg, transparent 0 21px, color-mix(in srgb, var(--xl-grid) 55%, transparent) 21px 22px); }
.c-excel-plus .s2, .c-excel-plus .s4 { display: block; }
.c-excel-plus .s5 { padding: 7%; }

.xp-sheet { position: relative; background: var(--xl-cell); border: 1px solid var(--xl-grid); border-radius: 8px; overflow: hidden; box-shadow: 0 14px 30px -20px rgba(10, 40, 25, .45); font-family: var(--xl-font); }
.xp-title { display: flex; align-items: center; gap: 6px; padding: .45em .8em; font-size: .85em; color: #fff; background: var(--xl); }
:root[data-theme="dark"] .xp-title { color: #08200f; }
@media (prefers-color-scheme: dark) { :root:not([data-theme="light"]) .xp-title { color: #08200f; } }
.xp-grid { display: grid; font-size: .92em; }
.xp-grid > span { min-width: 0; padding: .32em .55em; border-right: 1px solid var(--xl-grid); border-bottom: 1px solid var(--xl-grid); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; font-variant-numeric: tabular-nums; }
.xp-grid > span:nth-child(n) { text-align: left; }
.xp-grid .hd, .xp-grid .rn { background: var(--xl-hd); color: var(--muted); text-align: center !important; font-size: .86em; }
.xp-grid .th { font-weight: 700; color: var(--ink); }
.xp-g2 { grid-template-columns: 2.2em 1.4fr 1fr; }
.xp-g3 { grid-template-columns: 2.2em 1.5fr 1fr 1fr; }
.xp-g4 { grid-template-columns: 2.2em 1.5fr .8fr 1fr 1fr; }
.xp-g5 { grid-template-columns: 2.2em 1.4fr .7fr .8fr 1fr .9fr; }

/* Escena 1: cuentas a mano */
.xp-s1 { position: absolute; left: 6%; top: 8%; width: 60%; transform: rotate(-1.5deg); }
.xp-grid .typed { font-family: "Segoe Print", "Bradley Hand", var(--f-data); color: var(--muted); }
.xp-grid .typed.bad { color: var(--bad); text-decoration: underline wavy var(--bad); text-underline-offset: 3px; background: color-mix(in srgb, var(--bad) 10%, transparent); }
.xp-calc { position: absolute; right: 6%; top: 38%; width: 22%; padding: .7em; border-radius: 12px; background: #2b3540; box-shadow: 0 18px 30px -16px rgba(0,0,0,.6); transform: rotate(6deg); --d: .15s; }
.xp-calc-screen { padding: .4em .5em; border-radius: 5px; background: #c9d8c0; color: #23301f; font-family: var(--f-data); font-size: .9em; text-align: right; white-space: nowrap; }
.xp-calc-keys { display: grid; grid-template-columns: repeat(3, 1fr); gap: .35em; margin-top: .55em; }
.xp-calc-keys i { aspect-ratio: 1.3; border-radius: 4px; background: #4a5866; }
.xp-calc-keys i:nth-child(3n) { background: #e8a700; }
.xp-note { position: absolute; left: 12%; bottom: 8%; margin: 0; padding: .6em 1em; border-radius: 4px; background: #fff3b0; color: #4a3b00; font-family: var(--f-data); font-size: .95em; transform: rotate(-2deg); box-shadow: 0 8px 16px -10px rgba(0,0,0,.4); --d: .35s; }
.cs-stage:not([data-step="1"]) .s1 .xp-s1 { opacity: 0; transform: translateY(20px) rotate(0); }
.cs-stage:not([data-step="1"]) .s1 .xp-calc { opacity: 0; transform: translateX(20px) rotate(0); }
.cs-stage:not([data-step="1"]) .s1 .xp-note { opacity: 0; transform: scale(.85); }

/* Escena 2: referencias */
.s2 .xp-sheet { margin-top: 2%; }
.xp-formulabar u { text-decoration: none; font-weight: 700; padding: 0 1px; }
u.r1, .xp-legend b.r1 { color: var(--xl-r1); } u.r2, .xp-legend b.r2 { color: var(--xl-r2); } u.r3, .xp-legend b.r3 { color: var(--xl-r3); }
.xp-grid .b1 { box-shadow: inset 0 0 0 2px var(--xl-r1); } .xp-grid .b2 { box-shadow: inset 0 0 0 2px var(--xl-r2); }
.xp-grid .abs { box-shadow: inset 0 0 0 2px var(--xl-r3); font-weight: 700; color: var(--xl); }
.xp-grid .abs small { font-weight: 500; color: var(--muted); }
.xp-grid .fill { font-weight: 600; color: var(--ink); background: color-mix(in srgb, var(--xl) 9%, transparent); transition: opacity .35s, background-color .35s; }
.xp-grid .f1 { box-shadow: inset 0 0 0 2px var(--xl); }
.cs-stage[data-step="2"] .xp-grid .f2 { transition-delay: .55s; } .cs-stage[data-step="2"] .xp-grid .f3 { transition-delay: .8s; } .cs-stage[data-step="2"] .xp-grid .f4 { transition-delay: 1.05s; }
.cs-stage:not([data-step="2"]) .xp-grid .fill:not(.f1) { opacity: 0; }
.xp-legend { list-style: none; margin: 1.4em 0 0; padding: 0; display: grid; gap: .6em; font-size: .95em; color: var(--muted); --d: .4s; }
.xp-legend li { display: flex; align-items: center; gap: .5em; }
.xp-legend b { width: .9em; height: .9em; border: 2px solid currentColor; border-radius: 2px; }
.cs-stage:not([data-step="2"]) .s2 .xp-sheet { opacity: 0; transform: translateY(16px); }
.cs-stage:not([data-step="2"]) .s2 .xp-legend { opacity: 0; }

/* Escena 3: funciones */
.xp-funcs { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: .6em; }
.xp-funcs div { display: grid; gap: .15em; padding: .6em .8em; border-radius: 8px; background: var(--xl-cell); border: 1px solid var(--xl-grid); border-left: 4px solid var(--xl); font-family: var(--xl-font); }
.xp-funcs small { font-size: .82em; color: var(--muted); }
.xp-funcs b { font-family: var(--f-display); font-size: 1.25em; }
.xp-si { margin-top: 1.1em; --d: .25s; }
.xp-si em { font-style: normal; font-weight: 700; font-size: .9em; padding: .05em .55em; border-radius: 999px; }
.xp-si em.ok { color: var(--xl); background: var(--xl-soft); }
.xp-si em.no { color: var(--bad); background: color-mix(in srgb, var(--bad) 14%, transparent); }
.cs-stage:not([data-step="3"]) .s3 .xp-funcs, .cs-stage:not([data-step="3"]) .s3 .xp-si { opacity: 0; transform: translateY(14px); }

/* Escena 4: listas */
.xp-list { width: 60%; }
.xp-frozen > span:nth-child(-n+8) { border-bottom: 2px solid var(--muted); }
.xp-arrow { font-style: normal; color: var(--muted); font-size: .8em; }
.xp-filter-on { background: var(--xl-soft); }
.xp-filter-on .xp-arrow { color: var(--xl); }
.xp-grid .dup { position: relative; color: var(--bad); text-decoration: line-through; background: color-mix(in srgb, var(--bad) 9%, transparent); transition: opacity .5s 1s; }
.cs-stage[data-step="4"] .xp-grid .dup { opacity: .35; }
.xp-tabs { display: flex; gap: 2px; padding: .3em .5em 0; background: var(--xl-hd); font-size: .82em; }
.xp-tabs span { padding: .3em .8em; color: var(--muted); border-radius: 0 0 4px 4px; }
.xp-tabs .on { background: var(--xl-cell); color: var(--xl); font-weight: 700; border-bottom: 2px solid var(--xl); }
.xp-dropdown { position: absolute; right: 6%; top: 16%; width: 28%; display: grid; gap: .3em; padding: .7em .8em; border-radius: 8px; background: var(--xl-cell); border: 1px solid var(--xl-grid); box-shadow: var(--shadow); font-family: var(--xl-font); font-size: .9em; --d: .2s; }
.xp-dropdown small { color: var(--muted); padding-bottom: .3em; border-bottom: 1px solid var(--xl-grid); }
.xp-dropdown label { display: flex; align-items: center; gap: .5em; }
.xp-dropdown i { width: .95em; height: .95em; border: 1.5px solid var(--muted); border-radius: 2px; }
.xp-dropdown i.on { background: var(--xl); border-color: var(--xl); box-shadow: inset 0 0 0 2px var(--xl-cell); }
.xp-toast { position: absolute; left: 7%; bottom: 7%; margin: 0; padding: .6em 1em; border-radius: 8px; background: var(--deep); color: var(--on-deep); font-size: .9em; --d: .9s; }
.cs-stage:not([data-step="4"]) .s4 .xp-list { opacity: 0; transform: translateY(14px); }
.cs-stage:not([data-step="4"]) .s4 .xp-dropdown { opacity: 0; transform: translateY(-10px); }
.cs-stage:not([data-step="4"]) .s4 .xp-toast { opacity: 0; transform: translateY(10px); }

/* Escena 5: subtotales, gráfica, auditoría */
.xp-sub { width: 62%; }
.xp-sub .xp-grid { margin-right: 16%; border-right: 1px solid var(--xl-grid); }
.xp-sub .pre { color: var(--xl-r1); font-weight: 600; }
.xp-sub .tot { box-shadow: inset 0 0 0 2px var(--xl-r1); }
.xp-trace { position: absolute; inset: 0; width: 100%; height: 100%; pointer-events: none; }
.xp-trace path { fill: none; stroke: var(--xl-r1); stroke-width: 1.6; vector-effect: non-scaling-stroke; stroke-dasharray: 120; stroke-dashoffset: 120; transition: stroke-dashoffset .9s .5s ease; }
.cs-stage[data-step="5"] .xp-trace path { stroke-dashoffset: 0; }
.xp-trace-l { display: block; padding: .35em .6em; font-size: .78em; color: var(--xl-r1); border-top: 1px dashed var(--xl-grid); }
.xp-chart { position: absolute; right: 7%; bottom: 7%; width: 52%; padding: .8em 1em; border-radius: 10px; background: var(--xl-cell); border: 1px solid var(--xl-grid); box-shadow: var(--shadow); --d: .3s; }
.xp-chart small { font-size: .82em; color: var(--muted); }
.xp-cols { display: flex; align-items: flex-end; gap: 14%; height: 6.5em; padding: 1.3em 6% 0; border-bottom: 1px solid var(--xl-grid); }
.xp-cols i { position: relative; flex: 1; height: var(--h); background: var(--xl); border-radius: 2px 2px 0 0; transform-origin: bottom; transform: scaleY(.05); transition: transform .8s cubic-bezier(.2, .8, .2, 1); }
.xp-cols i:nth-child(2) { transition-delay: .1s; } .xp-cols i:nth-child(3) { transition-delay: .2s; }
.cs-stage[data-step="5"] .xp-cols i { transform: none; }
.xp-cols em { position: absolute; left: 0; right: 0; top: -1.4em; text-align: center; font-style: normal; font-size: .78em; color: var(--ink); }
.xp-cols-l { display: flex; gap: 14%; padding: .3em 6% 0; } .xp-cols-l span { flex: 1; text-align: center; font-size: .78em; color: var(--muted); }
.cs-stage:not([data-step="5"]) .s5 .xp-sub { opacity: 0; transform: translateY(14px); }
.cs-stage:not([data-step="5"]) .s5 .xp-chart { opacity: 0; transform: translateY(18px); }

/* ---------- Programa: cada tema con su fórmula ---------- */
.c-excel-plus .unit-n { font-family: var(--xl-font); font-weight: 700; letter-spacing: 0; color: var(--xl); justify-self: start; padding: 1px 8px; border: 1.5px solid var(--xl); }
.c-excel-plus .unit { align-content: space-between; }
.xp-eg { display: block; padding: 7px 10px; border-radius: 6px; font-family: var(--xl-font); font-size: .84rem; color: var(--ink); background: var(--xl-soft); border-left: 3px solid var(--xl); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.xp-eg.xp-menu { background: transparent; border: 1px dashed var(--xl-grid); border-left: 3px solid var(--muted); color: var(--muted); }

/* ---------- Recorrido: 3 tramos ---------- */
.xp-road { grid-template-columns: 1.4fr 1fr 1fr; }
.c-excel-plus .dots { grid-template-columns: repeat(7, 1fr); max-width: 220px; }
.c-excel-plus .road-classes.on .dots i { background: var(--xl); border-radius: 2px; }

@media (max-width: 900px) {
  .xp-fx { left: -8px; bottom: -22px; width: 78%; }
  .xp-road { grid-template-columns: minmax(0, 1fr); }
}
@media (max-width: 560px) {
  .c-excel-plus .scene { padding: 5%; }
  .xp-s1 { left: 4%; top: 6%; width: 66%; }
  .xp-calc { right: 4%; width: 22%; }
  .xp-note { left: 6%; bottom: 5%; }
  .xp-legend { margin-top: .8em; }
  .xp-funcs { gap: .4em; } .xp-funcs div { padding: .35em .6em; } .xp-si { margin-top: .6em; }
  .xp-list { width: 62%; } .xp-dropdown { right: 3%; width: 32%; } .xp-toast { left: 4%; bottom: 4%; }
  .xp-sub { width: 64%; } .xp-chart { right: 4%; bottom: 4%; width: 56%; } .xp-cols { height: 5em; }
  .xp-fx-bar { font-size: .74rem; } .xp-fx-cell b { font-size: 1.1rem; }
}
@media (prefers-reduced-motion: reduce) {
  .xp-fx, .xp-caret { animation: none !important; }
  .xp-trace path, .xp-cols i, .xp-grid .fill, .xp-grid .dup { transition: none !important; }
}