/* Capa de marca de la app de entrenamiento.
   Se carga después del CSS original de app/head.html y lo lleva al sistema de diseño del sitio:
   gris carbón con degradados vivos, tipografía Poppins y refuerzo positivo en cada acierto.
   El tema oscuro es el de la marca y va por defecto; el claro queda como opción.
   Los gráficos del canvas leen estas variables, así que deben ser colores hex de 6 dígitos. */

@font-face { font-family: 'Poppins'; font-style: normal; font-weight: 300; font-display: swap; src: url(/fonts/poppins-latin-300-normal.woff2) format('woff2'); unicode-range: U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD; }
@font-face { font-family: 'Poppins'; font-style: normal; font-weight: 400; font-display: swap; src: url(/fonts/poppins-latin-400-normal.woff2) format('woff2'); unicode-range: U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD; }
@font-face { font-family: 'Poppins'; font-style: normal; font-weight: 500; font-display: swap; src: url(/fonts/poppins-latin-500-normal.woff2) format('woff2'); unicode-range: U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD; }
@font-face { font-family: 'Poppins'; font-style: normal; font-weight: 600; font-display: swap; src: url(/fonts/poppins-latin-600-normal.woff2) format('woff2'); unicode-range: U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD; }
@font-face { font-family: 'Poppins'; font-style: normal; font-weight: 300; font-display: swap; src: url(/fonts/poppins-latin-ext-300-normal.woff2) format('woff2'); unicode-range: U+0100-02BA,U+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,U+0304,U+0308,U+0329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF; }
@font-face { font-family: 'Poppins'; font-style: normal; font-weight: 400; font-display: swap; src: url(/fonts/poppins-latin-ext-400-normal.woff2) format('woff2'); unicode-range: U+0100-02BA,U+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,U+0304,U+0308,U+0329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF; }
@font-face { font-family: 'Poppins'; font-style: normal; font-weight: 500; font-display: swap; src: url(/fonts/poppins-latin-ext-500-normal.woff2) format('woff2'); unicode-range: U+0100-02BA,U+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,U+0304,U+0308,U+0329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF; }
@font-face { font-family: 'Poppins'; font-style: normal; font-weight: 600; font-display: swap; src: url(/fonts/poppins-latin-ext-600-normal.woff2) format('woff2'); unicode-range: U+0100-02BA,U+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,U+0304,U+0308,U+0329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF; }

/* ---------- Paleta: oscuro de marca por defecto ---------- */
:root,
:root:not([data-theme="light"]),
:root[data-theme="dark"] {
  --bg: #2d2f35; --panel: #363940; --panel2: #2a2c31; --card: #363940;
  --ink: #ffffff; --muted: #b4b8c1; --rule: #464951;
  --chartbg: #26282d; --grid: #34373d;
  --bull: #11d6b6; --bear: #f2466f; --accent: #ff8a4c; --onaccent: #1f2126;
  --liq: #4aa3ff; --fvg: #c471ed; --good: #11d6b6; --bad: #f2466f;
  --display: 'Poppins', system-ui, -apple-system, 'Segoe UI', sans-serif;
  --body: 'Poppins', system-ui, -apple-system, 'Segoe UI', sans-serif;
  --bg-top: #3c3f46; --bg-bottom: #232529;
  --g-violet: linear-gradient(160deg, #c471ed 0%, #7b2ff7 62%, #6a11f5 100%);
  --g-pink: linear-gradient(160deg, #ff6b8b 0%, #e6246e 100%);
  --g-orange: linear-gradient(100deg, #ff7043 0%, #ffd48a 100%);
  --g-blue: linear-gradient(160deg, #1d3fd1 0%, #139fe0 55%, #00e3b5 100%);
  --g-teal: linear-gradient(90deg, #139fe0, #11d6b6);
  --g-brand: linear-gradient(100deg, #c471ed 0%, #f2466f 38%, #ff8a4c 70%, #ffd48a 100%);
  --soft: 0 12px 30px -12px rgba(0, 0, 0, .45);
  --violet-glow: 0 14px 34px -12px rgba(123, 47, 247, .75);
  color-scheme: dark;
}
:root[data-theme="light"] {
  --bg: #eef0f4; --panel: #ffffff; --panel2: #e4e7ee; --card: #ffffff;
  --ink: #1f2126; --muted: #5d616b; --rule: #d7dbe3;
  --chartbg: #f8f9fb; --grid: #e6e9ef;
  --bull: #0e9f88; --bear: #df2f5a; --accent: #ea6a2a; --onaccent: #ffffff;
  --liq: #1673d1; --fvg: #8b3cf7; --good: #0e9f88; --bad: #df2f5a;
  --bg-top: #f5f6f9; --bg-bottom: #e6e9ef;
  --soft: 0 10px 26px -14px rgba(31, 33, 38, .25);
  --violet-glow: 0 12px 28px -12px rgba(123, 47, 247, .5);
  color-scheme: light;
}

/* ---------- Base ---------- */
body {
  background: var(--bg-bottom) linear-gradient(180deg, var(--bg-top) 0%, var(--bg) 35%, var(--bg-bottom) 100%) fixed;
  font-weight: 400;
  letter-spacing: -.003em;
}
:focus-visible { outline: 2px solid #c471ed; outline-offset: 3px; }
::selection { background: rgba(196, 113, 237, .35); }

/* Cabecera translúcida */
.bar {
  background: color-mix(in srgb, var(--bg-top) 72%, transparent);
  backdrop-filter: blur(14px) saturate(140%); -webkit-backdrop-filter: blur(14px) saturate(140%);
  border-bottom-color: color-mix(in srgb, var(--ink) 8%, transparent);
}
.brand { font-weight: 500; font-size: 17px; }
.brand svg { width: 26px; height: 26px; }
.iconbtn { border-radius: 14px; border-color: var(--rule); background: color-mix(in srgb, var(--panel) 80%, transparent); }
.pill { font-weight: 500; background: color-mix(in srgb, var(--panel) 85%, transparent); border-color: var(--rule); }
.pill.hot { border-color: transparent; background: linear-gradient(var(--panel), var(--panel)) padding-box, var(--g-orange) border-box; box-shadow: 0 6px 18px -8px rgba(255, 112, 67, .7); }

/* ---------- Tipografía: finos en grande, medios en títulos pequeños ---------- */
.hero h1, .result .big, .qres .big, .gradebig, .num, .toc .n { font-weight: 300; letter-spacing: -.03em; }
.hero h1 { font-size: clamp(36px, 8vw, 58px); line-height: 1.05; }
.hero h1, .result .big, .qres .big { background: var(--g-brand); -webkit-background-clip: text; background-clip: text; color: transparent; }
.sec { font-weight: 400; font-size: 26px; letter-spacing: -.02em; margin-top: 8px; }
.lh { font-weight: 400; letter-spacing: -.025em; line-height: 1.15; }
.prompt, .lq { font-weight: 500 !important; letter-spacing: -.015em; }
.mode b, .lvl b, .pathcard h2, .mod h3, .rank h2 { font-weight: 500; letter-spacing: -.015em; }
.stats b { font-weight: 400; }
.card td, .tfb, .gb { font-weight: 500; }
.verdict, .lfb b.v { font-weight: 600; }
.box h4, .cmpi h4, .srow h4, .why h4, .sub2, #lUnit, .concept { font-weight: 600; }
.go, .confirm, .next, .opt, .tf, .tool b, .chip, #stepTxt, .pdone, .diffrow > span { font-weight: 500; }
.opt kbd { font-weight: 600; }
.lbody p, .lx li, .stept, .why, .box p { font-weight: 300; }
.lbody p b, .lx li b, .stept b, .why b, .box p b, .lbody strong { font-weight: 600; }

/* ---------- Superficies ---------- */
.rank, .mode, .lvl, .pathcard, .fb, .ticket, .stepbox, .cmpi, .srow, .box, .gloss div, .toc li button,
.report .rc, .calcrow, .opt, .tool, .tfb, .gb, .nb, .cpt, .lfb {
  border-color: var(--rule);
}
.rank, .mode, .lvl, .pathcard, .ticket, .stepbox, .cmpi, .srow, .report .rc {
  background: linear-gradient(180deg, color-mix(in srgb, var(--panel) 100%, #ffffff 3%), var(--panel));
  box-shadow: var(--soft);
}
.rank, .mode, .lvl, .pathcard { border-radius: 24px; }
.chartwrap, .anat { border-radius: 22px; border-color: var(--rule); box-shadow: inset 0 2px 10px rgba(0, 0, 0, .28); }

/* ---------- Botones ---------- */
.confirm {
  background: var(--g-violet); color: #fff; border-radius: 16px; font-weight: 500;
  box-shadow: var(--violet-glow); transition: transform .2s cubic-bezier(.2,.8,.2,1), box-shadow .2s, opacity .2s;
}
.confirm:hover:not(:disabled) { transform: translateY(-1px); }
.confirm:disabled { box-shadow: none; }
.go { border: 1px solid color-mix(in srgb, var(--ink) 22%, transparent); transition: background-color .2s; }
.go:hover { background: color-mix(in srgb, var(--ink) 6%, transparent); }
.next { border-radius: 16px; background: var(--ink); color: var(--bg-bottom); font-weight: 500; transition: transform .2s; }
.next:hover { transform: translateY(-1px); }
.mode { transition: transform .25s cubic-bezier(.2,.8,.2,1), box-shadow .25s; }
.mode:hover, .lvl:hover { transform: translateY(-2px); }
.lvl { transition: transform .25s cubic-bezier(.2,.8,.2,1); }
.mode.primary { background: var(--g-violet); color: #fff; box-shadow: var(--violet-glow); }
.mode.primary span { opacity: .85; }
.opt { border-width: 1px; border-radius: 16px; background: color-mix(in srgb, var(--panel) 92%, transparent); transition: background-color .2s, border-color .2s, transform .2s; }
.opt:hover:not(:disabled) { transform: translateY(-1px); background: color-mix(in srgb, var(--panel) 100%, #ffffff 5%); }
.opt kbd { background: var(--panel2); color: var(--muted); }
.tfb, .gb, .nb, .tool { border-width: 1px; }
.tf.on { background: var(--panel); box-shadow: 0 4px 12px -4px rgba(0, 0, 0, .4); }
.tool.on, .gb.sel, .nonebtn.sel { border-color: #c471ed; box-shadow: inset 0 0 0 1px #c471ed; background: color-mix(in srgb, #8b3cf7 14%, var(--panel)); }
.link { color: var(--muted); }

/* ---------- Progreso con degradado ---------- */
.ltrack, .stepper .track, .timer .track { background: var(--panel2); box-shadow: inset 0 1px 4px rgba(0, 0, 0, .3); height: 8px; }
.ltrack i, .stepper .track i { background: var(--g-brand); }
.timer .track i { background: var(--g-orange); }
.meter .body { border-color: transparent; background: var(--panel2); box-shadow: inset 0 1px 6px rgba(0, 0, 0, .35); }
.meter .fill { background: var(--g-blue); }
.cpt i::after { background: var(--g-teal); }
.lvl .pips i.f { background: var(--g-orange); }

/* ---------- Tarjetas del recorrido ---------- */
.pathcard { border: 1.5px solid transparent; background: linear-gradient(var(--panel), var(--panel)) padding-box, var(--g-violet) border-box; }
.pathcard.later { border: 1px solid var(--rule); background: linear-gradient(180deg, color-mix(in srgb, var(--panel) 100%, #ffffff 3%), var(--panel)); }
.pathcard.sim { border: 1.5px solid transparent; background: linear-gradient(var(--panel), var(--panel)) padding-box, var(--g-orange) border-box; }
.pathcard .pk { font-weight: 500; letter-spacing: .06em; text-transform: uppercase; font-size: 12px; }

/* ---------- Refuerzo positivo ---------- */
.fb, .lfb { border-width: 1px; animation: fbIn .45s cubic-bezier(.2,.8,.2,1); }
.fb.ok, .lfb.ok { background: linear-gradient(160deg, color-mix(in srgb, var(--good) 14%, var(--panel)), var(--panel) 70%); box-shadow: 0 16px 40px -18px color-mix(in srgb, var(--good) 70%, transparent); }
.fb.bad, .lfb.bad { background: linear-gradient(160deg, color-mix(in srgb, var(--bad) 10%, var(--panel)), var(--panel) 70%); }
.fb.ok .verdict, .lfb.ok b.v { background: var(--g-teal); -webkit-background-clip: text; background-clip: text; color: transparent; }
.opt.right, .tfb.right { animation: rightPop .5s cubic-bezier(.2,.8,.2,1); box-shadow: 0 0 0 1px var(--good), 0 10px 26px -12px color-mix(in srgb, var(--good) 80%, transparent); }
@keyframes fbIn { from { opacity: 0; transform: translateY(8px) scale(.985); } to { opacity: 1; transform: none; } }
@keyframes rightPop { 0% { transform: scale(1); } 40% { transform: scale(1.025); } 100% { transform: scale(1); } }

/* Píldora de XP que «late» al sumar y cifra flotante +N XP */
.pill.bump { animation: bump .6s cubic-bezier(.2,.8,.2,1); }
@keyframes bump { 0% { transform: scale(1); } 35% { transform: scale(1.14); box-shadow: 0 0 0 4px rgba(196, 113, 237, .35); } 100% { transform: scale(1); } }
.xpfloat {
  position: fixed; z-index: 50; transform: translateX(-50%); pointer-events: none;
  padding: 5px 11px; border-radius: 999px; background: var(--g-violet); color: #fff;
  font: 600 13px/1.2 var(--body); box-shadow: var(--violet-glow);
  animation: xpUp 1.3s cubic-bezier(.2,.8,.2,1) forwards;
}
@keyframes xpUp { 0% { opacity: 0; margin-top: 8px; } 18% { opacity: 1; margin-top: 0; } 75% { opacity: 1; } 100% { opacity: 0; margin-top: -16px; } }
.toast {
  position: fixed; z-index: 60; left: 50%; bottom: calc(96px + env(safe-area-inset-bottom, 0px)); transform: translateX(-50%);
  max-width: calc(100vw - 32px); padding: 14px 20px; border-radius: 18px; text-align: center;
  background: linear-gradient(var(--panel), var(--panel)) padding-box, var(--g-brand) border-box; border: 1.5px solid transparent;
  color: var(--ink); font: 500 15px/1.35 var(--body); box-shadow: 0 24px 50px -20px rgba(0, 0, 0, .6);
  animation: toastIn 3.2s cubic-bezier(.2,.8,.2,1) forwards;
}
.toast b { background: var(--g-brand); -webkit-background-clip: text; background-clip: text; color: transparent; font-weight: 600; }
@keyframes toastIn { 0% { opacity: 0; transform: translate(-50%, 16px); } 10%, 85% { opacity: 1; transform: translate(-50%, 0); } 100% { opacity: 0; transform: translate(-50%, 8px); } }

/* ---------- Lecciones ---------- */
.keyrule { background: linear-gradient(160deg, color-mix(in srgb, #8b3cf7 16%, var(--panel)), var(--panel)); border: 1px solid color-mix(in srgb, #c471ed 45%, transparent); font-weight: 400; }
.box { border-radius: 18px; background: color-mix(in srgb, var(--panel) 92%, transparent); }
.box.read { border-left-color: var(--accent); }
.box.inst { border-left-color: #c471ed; }
.box.ana { background: var(--panel2); }
.lnav { background: color-mix(in srgb, var(--bg-bottom) 82%, transparent); backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px); border-top-color: color-mix(in srgb, var(--ink) 8%, transparent); }
.lnav .go, .lnav .confirm { border-radius: 16px; }
.toc li button { border-radius: 16px; transition: transform .2s, background-color .2s; }
.toc li button:hover { transform: translateY(-1px); }
.calcrow input { background: var(--panel2); border-color: var(--rule); }
.chip { background: var(--panel2); }
.zoombtn { background: color-mix(in srgb, var(--panel) 88%, transparent); border-color: var(--rule); font-weight: 500; }

@media (prefers-reduced-motion: reduce) {
  .xpfloat, .toast, .fb, .lfb, .opt.right, .tfb.right, .pill.bump { animation-duration: .01ms !important; }
  .toast { animation: none !important; }
}

/* Encabezados de pregunta dentro de lecciones, exámenes y prueba de nivel: etiqueta, no texto de lectura */
.lbody p.stepn { font-size: 13px; font-weight: 500; letter-spacing: .04em; color: var(--muted); margin: 0 0 8px; }

/* ---------- Pautas de interfaz (accesibilidad, tacto, cifras) ---------- */
.d-skip {
  position: absolute; left: 16px; top: -100px; z-index: 100; padding: 12px 18px; border-radius: 12px;
  background: #ffffff; color: #1f2126; font-weight: 500; text-decoration: none; transition: top .2s;
}
.d-skip:focus { top: 12px; }
main:focus { outline: none; } /* destino del salto: el foco pasa al primer control del contenido */
a, button, summary, label, .opt, .cpt { touch-action: manipulation; -webkit-tap-highlight-color: transparent; }
.pill, .chip, .d-legend b, .d-ringc b, .d-focus-row b, .d-perf-kpis b, .d-goal, #lCount, #stepTxt, .timer span { font-variant-numeric: tabular-nums; }
.tool:hover:not(:disabled), .gb:hover:not(:disabled), .tfb:hover:not(:disabled), .nb:hover:not(:disabled),
.cpt:hover:not(:disabled), .nonebtn:hover:not(:disabled) { background: color-mix(in srgb, var(--panel) 100%, #ffffff 6%); border-color: color-mix(in srgb, var(--rule) 60%, var(--ink)); }
.tf:hover:not(.on):not(:disabled) { background: color-mix(in srgb, var(--ink) 6%, transparent); }
.tool, .gb, .tfb, .nb, .cpt, .nonebtn, .tf { transition: background-color .2s, border-color .2s, transform .2s; }