/* ==========================================================================
   Farlaz — Sistema de diseño
   ========================================================================== */

:root {
  /* Superficies */
  --bg:        #04070B;
  --bg-2:      #080D13;
  --surface:   #0D141C;
  --surface-2: #121B25;
  --border:    #1B2733;
  --border-2:  #263543;

  /* Texto */
  --text:      #EAF0F6;
  --text-2:    #A7B4C2;
  --muted:     #6B7B8C;

  /* Marca */
  --accent:      #00C2FF;
  --accent-soft: rgba(0, 194, 255, 0.12);
  --accent-line: rgba(0, 194, 255, 0.28);
  --up:          #3DDC97;
  --down:        #FF5F6D;

  /* Tipografía */
  --sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, monospace;

  /* Métrica */
  --nav-h: 72px;
  --wrap: 1200px;
  --r-sm: 6px;
  --r:    12px;
  --r-lg: 20px;

  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

/* Reset --------------------------------------------------------------- */

*, *::before, *::after { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--nav-h) + 20px);
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img, svg, iframe { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; }

h1, h2, h3, h4 {
  margin: 0;
  font-weight: 600;
  line-height: 1.12;
  letter-spacing: -0.03em;
}

h1 { font-size: clamp(2.6rem, 6.2vw, 4.6rem); font-weight: 650; }
h2 { font-size: clamp(1.9rem, 3.8vw, 2.9rem); }
h3 { font-size: clamp(1.15rem, 1.9vw, 1.4rem); letter-spacing: -0.02em; }

p { margin: 0 0 1rem; color: var(--text-2); }
p:last-child { margin-bottom: 0; }

::selection { background: var(--accent); color: #001019; }

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 3px;
}

/* Utilidades ---------------------------------------------------------- */

.wrap {
  width: 100%;
  max-width: var(--wrap);
  margin-inline: auto;
  padding-inline: 24px;
}

.section { padding: clamp(72px, 10vw, 128px) 0; }
.section--tight { padding: clamp(52px, 7vw, 88px) 0; }
.section--alt { background: var(--bg-2); border-block: 1px solid var(--border); }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font-family: var(--mono);
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 18px;
}
.eyebrow::before {
  content: "";
  width: 20px;
  height: 1px;
  background: var(--accent);
  opacity: 0.6;
}

.lede {
  font-size: clamp(1.02rem, 1.5vw, 1.18rem);
  color: var(--text-2);
  max-width: 62ch;
}

.section-head { max-width: 66ch; margin-bottom: clamp(40px, 5vw, 64px); }
.center { text-align: center; }
.center .section-head { margin-inline: auto; }
.center .eyebrow::before { display: none; }

.mono { font-family: var(--mono); font-variant-numeric: tabular-nums; }
.sr-only {
  position: absolute; width: 1px; height: 1px;
  padding: 0; margin: -1px; overflow: hidden;
  clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}

/* Botones ------------------------------------------------------------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  padding: 13px 24px;
  border-radius: var(--r-sm);
  border: 1px solid transparent;
  font-size: 0.92rem;
  font-weight: 550;
  letter-spacing: -0.01em;
  white-space: nowrap;
  transition: all 0.22s var(--ease);
}

.btn--primary {
  background: var(--accent);
  color: #00131C;
  box-shadow: 0 0 0 0 var(--accent-line);
}
.btn--primary:hover {
  background: #35D2FF;
  box-shadow: 0 8px 28px -8px rgba(0, 194, 255, 0.55);
  transform: translateY(-1px);
}

.btn--ghost {
  border-color: var(--border-2);
  color: var(--text);
  background: transparent;
}
.btn--ghost:hover {
  border-color: var(--accent-line);
  background: var(--accent-soft);
  color: var(--accent);
}

.btn--sm { padding: 9px 17px; font-size: 0.85rem; }
.btn__arrow { transition: transform 0.22s var(--ease); }
.btn:hover .btn__arrow { transform: translateX(3px); }

.link-arrow {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  color: var(--accent);
  font-size: 0.9rem;
  font-weight: 550;
}
.link-arrow span { transition: transform 0.22s var(--ease); }
.link-arrow:hover span { transform: translateX(4px); }

/* Navegación ---------------------------------------------------------- */

.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--nav-h);
  background: rgba(4, 7, 11, 0.72);
  backdrop-filter: blur(18px) saturate(160%);
  -webkit-backdrop-filter: blur(18px) saturate(160%);
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s, background 0.3s;
}
.nav.is-stuck {
  border-bottom-color: var(--border);
  background: rgba(4, 7, 11, 0.92);
}

.nav__inner {
  height: 100%;
  display: flex;
  align-items: center;
  gap: 30px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 13px;
  font-weight: 500;
  font-size: 1.06rem;
  letter-spacing: 0.24em;
  flex-shrink: 0;
  color: var(--text);
}
/* Logotipo (assets/img/logo-farlaz.png) */
.brand__logo {
  height: 28px;
  width: auto;
  flex-shrink: 0;
  filter: drop-shadow(0 0 12px rgba(0, 194, 255, 0.35))
          drop-shadow(0 0 22px rgba(255, 255, 255, 0.12));
  transition: filter 0.25s var(--ease);
}
.brand:hover .brand__logo {
  filter: drop-shadow(0 0 16px rgba(0, 194, 255, 0.55))
          drop-shadow(0 0 30px rgba(255, 255, 255, 0.18));
}
.footer .brand__logo { height: 34px; }

@media (max-width: 560px) {
  .brand__logo { height: 24px; }
}

.nav__links {
  display: flex;
  align-items: center;
  gap: 4px;
  margin-left: auto;
}
.nav__link {
  position: relative;
  padding: 8px 14px;
  border-radius: var(--r-sm);
  font-size: 0.91rem;
  font-weight: 500;
  color: var(--text-2);
  transition: color 0.2s, background 0.2s;
}
.nav__link:hover { color: var(--text); background: var(--surface); }
.nav__link.is-active { color: var(--accent); }

.nav__actions {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

/* Selector de idioma */
.lang {
  display: inline-flex;
  padding: 3px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r-sm);
}
.lang__btn {
  padding: 5px 11px;
  border: 0;
  background: transparent;
  border-radius: 4px;
  font-family: var(--mono);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  color: var(--muted);
  transition: all 0.2s;
}
.lang__btn:hover { color: var(--text-2); }
.lang__btn.is-active { background: var(--accent); color: #00131C; }

/* Menú móvil */
.nav__toggle {
  display: none;
  width: 40px; height: 40px;
  align-items: center;
  justify-content: center;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r-sm);
  color: var(--text);
}

/* Hero ---------------------------------------------------------------- */

.hero {
  position: relative;
  padding: clamp(72px, 11vw, 132px) 0 clamp(150px, 19vw, 260px);
  overflow: hidden;

  /* Skyline al pie del hero */
  background-image: url("../img/skyline.svg");
  background-repeat: no-repeat;
  background-position: center bottom;
  background-size: 100% clamp(140px, 18vw, 250px);
}
.hero::before {
  content: "";
  position: absolute;
  top: -30%; left: 50%;
  width: min(1000px, 130vw);
  aspect-ratio: 1;
  translate: -50% 0;
  background: radial-gradient(circle, rgba(0, 194, 255, 0.13) 0%, transparent 62%);
  pointer-events: none;
}
.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--border) 1px, transparent 1px),
    linear-gradient(90deg, var(--border) 1px, transparent 1px);
  background-size: 76px 76px;
  opacity: 0.32;
  mask-image: radial-gradient(ellipse 78% 62% at 50% 32%, #000 20%, transparent 78%);
  -webkit-mask-image: radial-gradient(ellipse 78% 62% at 50% 32%, #000 20%, transparent 78%);
  pointer-events: none;
}
.hero > * { position: relative; z-index: 1; }

.hero__inner { max-width: 880px; }
.hero__inner.center { margin-inline: auto; }
.hero__inner.center .hero__cta { justify-content: center; }
.hero__inner.center .lede { margin-inline: auto; }
.hero__inner.center .badge { margin-inline: auto; }
.hero h1 { margin-bottom: 26px; }
.hero h1 em {
  font-style: normal;
  background: linear-gradient(100deg, var(--accent) 10%, #7FE9FF 90%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero .lede { font-size: clamp(1.06rem, 1.7vw, 1.28rem); max-width: 58ch; }

.hero__cta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 34px;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 6px 14px 6px 10px;
  margin-bottom: 26px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 100px;
  font-size: 0.79rem;
  color: var(--text-2);
}
.badge__dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--up);
  box-shadow: 0 0 0 3px rgba(61, 220, 151, 0.16);
  animation: pulse 2.4s ease-in-out infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50%      { opacity: 0.45; }
}

/* Cinta de cotizaciones */
.tape {
  border-block: 1px solid var(--border);
  background: var(--bg-2);
  min-height: 46px;
}

/* Rejillas ------------------------------------------------------------ */

.grid { display: grid; gap: 20px; }
.grid--2 { grid-template-columns: repeat(2, 1fr); }
.grid--3 { grid-template-columns: repeat(3, 1fr); }
.grid--4 { grid-template-columns: repeat(4, 1fr); }

/* Tarjetas ------------------------------------------------------------ */

.card {
  position: relative;
  padding: 28px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r);
  transition: border-color 0.25s, transform 0.25s var(--ease), background 0.25s;
}
.card:hover {
  border-color: var(--border-2);
  background: var(--surface-2);
  transform: translateY(-2px);
}
.card h3 { margin-bottom: 10px; }
.card p { font-size: 0.93rem; margin: 0; }

.card__num {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  color: var(--accent);
  margin-bottom: 20px;
  display: block;
}

.card__icon {
  width: 42px; height: 42px;
  display: grid;
  place-items: center;
  margin-bottom: 20px;
  background: var(--accent-soft);
  border: 1px solid var(--accent-line);
  border-radius: 10px;
  color: var(--accent);
}

/* Tarjeta de artículo */
.post {
  display: flex;
  flex-direction: column;
  overflow: hidden;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r);
  transition: border-color 0.25s, transform 0.25s var(--ease);
}
.post:hover { border-color: var(--accent-line); transform: translateY(-3px); }
.post:hover .post__title { color: var(--accent); }

.post__thumb {
  aspect-ratio: 16 / 9;
  background:
    radial-gradient(circle at 30% 20%, rgba(0, 194, 255, 0.2), transparent 60%),
    linear-gradient(135deg, var(--surface-2), var(--bg-2));
  border-bottom: 1px solid var(--border);
  position: relative;
  overflow: hidden;
}
.post__thumb::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--border) 1px, transparent 1px),
    linear-gradient(90deg, var(--border) 1px, transparent 1px);
  background-size: 34px 34px;
  opacity: 0.4;
}

.post__body { padding: 22px; display: flex; flex-direction: column; flex: 1; }

.post__meta {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.06em;
  color: var(--muted);
  text-transform: uppercase;
}

.tag {
  padding: 3px 9px;
  background: var(--accent-soft);
  border: 1px solid var(--accent-line);
  border-radius: 4px;
  color: var(--accent);
}

.post__title {
  font-size: 1.06rem;
  font-weight: 580;
  line-height: 1.35;
  letter-spacing: -0.02em;
  margin-bottom: 10px;
  transition: color 0.2s;
}
.post__excerpt { font-size: 0.9rem; margin-bottom: 18px; }
.post__foot { margin-top: auto; }

/* Estadísticas -------------------------------------------------------- */

.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border: 1px solid var(--border);
  border-radius: var(--r);
  overflow: hidden;
  background: var(--surface);
}
.stat { padding: 30px 26px; border-right: 1px solid var(--border); }
.stat:last-child { border-right: 0; }
.stat__val {
  font-family: var(--mono);
  font-size: clamp(1.7rem, 3.2vw, 2.3rem);
  font-weight: 500;
  letter-spacing: -0.03em;
  color: var(--text);
  line-height: 1;
  margin-bottom: 10px;
}
.stat__lbl {
  font-size: 0.83rem;
  color: var(--muted);
  line-height: 1.45;
}

/* Lista de comprobación ----------------------------------------------- */

.checks { list-style: none; padding: 0; margin: 0; display: grid; gap: 14px; }
.checks li {
  display: flex;
  gap: 13px;
  align-items: flex-start;
  font-size: 0.95rem;
  color: var(--text-2);
}
.checks svg { flex-shrink: 0; margin-top: 4px; color: var(--accent); }

/* Split (texto + media) ----------------------------------------------- */

.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(36px, 6vw, 80px);
  align-items: center;
}

.frame {
  border: 1px solid var(--border);
  border-radius: var(--r);
  overflow: hidden;
  background: var(--surface);
}
.frame img { width: 100%; height: 100%; object-fit: cover; }

/* Widgets TradingView ------------------------------------------------- */

.tv {
  border: 1px solid var(--border);
  border-radius: var(--r);
  overflow: hidden;
  background: var(--surface);
}
.tv__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 15px 20px;
  border-bottom: 1px solid var(--border);
  background: var(--bg-2);
}
.tv__title {
  font-size: 0.93rem;
  font-weight: 560;
  letter-spacing: -0.01em;
}
.tv__note { font-size: 0.76rem; color: var(--muted); margin: 0; }
.tv__body { padding: 0; }
.tv__body > div { width: 100% !important; }

/* Formulario ---------------------------------------------------------- */

.field { margin-bottom: 18px; }
.field label {
  display: block;
  margin-bottom: 7px;
  font-size: 0.83rem;
  font-weight: 500;
  color: var(--text-2);
}
.field input,
.field select,
.field textarea {
  width: 100%;
  padding: 12px 14px;
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: var(--r-sm);
  color: var(--text);
  font: inherit;
  font-size: 0.93rem;
  transition: border-color 0.2s, background 0.2s;
}
.field textarea { resize: vertical; min-height: 130px; }
.field input:focus,
.field select:focus,
.field textarea:focus {
  outline: none;
  border-color: var(--accent);
  background: var(--surface);
}
.field input::placeholder,
.field textarea::placeholder { color: var(--muted); }

.form-note { font-size: 0.79rem; color: var(--muted); margin-top: 14px; }

/* Newsletter ---------------------------------------------------------- */

.subscribe {
  position: relative;
  padding: clamp(40px, 6vw, 68px);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  background:
    radial-gradient(ellipse 70% 130% at 50% 0%, rgba(0, 194, 255, 0.11), transparent 68%),
    var(--surface);
  text-align: center;
  overflow: hidden;
}
.subscribe h2 { margin-bottom: 14px; }
.subscribe .lede { margin-inline: auto; margin-bottom: 30px; }

.subscribe__form {
  display: flex;
  gap: 10px;
  max-width: 480px;
  margin-inline: auto;
}
.subscribe__form input { flex: 1; }

/* Acordeón (FAQ) ------------------------------------------------------ */

.faq { border-top: 1px solid var(--border); }
.faq__item { border-bottom: 1px solid var(--border); }
.faq__q {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 22px 0;
  background: none;
  border: 0;
  text-align: left;
  color: var(--text);
  font-size: 1rem;
  font-weight: 520;
  letter-spacing: -0.01em;
  transition: color 0.2s;
}
.faq__q:hover { color: var(--accent); }
.faq__ico {
  flex-shrink: 0;
  color: var(--accent);
  transition: transform 0.28s var(--ease);
}
.faq__item.is-open .faq__ico { transform: rotate(45deg); }
.faq__a {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows 0.32s var(--ease);
}
.faq__item.is-open .faq__a { grid-template-rows: 1fr; }
.faq__a > div { overflow: hidden; }
.faq__a p { padding-bottom: 22px; font-size: 0.94rem; max-width: 72ch; }

/* Perfil del fundador -------------------------------------------------- */

.founder { display: grid; grid-template-columns: 340px 1fr; gap: clamp(32px, 5vw, 64px); }
.founder__photo {
  border: 1px solid var(--border);
  border-radius: var(--r);
  overflow: hidden;
  background: var(--surface);
  aspect-ratio: 4 / 5;
  position: relative;
}
.founder__photo img { width: 100%; height: 100%; object-fit: cover; }
.founder__ph {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  text-align: center;
  padding: 24px;
  font-family: var(--mono);
  font-size: 0.75rem;
  color: var(--muted);
  background:
    radial-gradient(circle at 50% 35%, rgba(0, 194, 255, 0.1), transparent 65%),
    var(--surface-2);
}
.quote {
  margin: 26px 0 0;
  padding: 22px 26px;
  border-left: 2px solid var(--accent);
  background: var(--bg-2);
  border-radius: 0 var(--r-sm) var(--r-sm) 0;
}
.quote p {
  font-size: 1.08rem;
  color: var(--text);
  font-style: italic;
  letter-spacing: -0.01em;
}
.quote cite {
  display: block;
  margin-top: 10px;
  font-size: 0.83rem;
  font-style: normal;
  color: var(--muted);
}

/* Texto legal ---------------------------------------------------------- */

.prose { max-width: 74ch; }
.prose h2 { font-size: 1.42rem; margin: 44px 0 14px; }
.prose h3 { font-size: 1.08rem; margin: 30px 0 10px; }
.prose p, .prose li { font-size: 0.95rem; color: var(--text-2); }
.prose ul, .prose ol { padding-left: 20px; margin: 0 0 1rem; }
.prose li { margin-bottom: 8px; }
.prose a { color: var(--accent); text-decoration: underline; text-underline-offset: 3px; }
.prose strong { color: var(--text); font-weight: 580; }

.page-head {
  position: relative;
  overflow: hidden;
  padding: clamp(52px, 7vw, 88px) 0 clamp(48px, 6vw, 72px);
  border-bottom: 1px solid var(--border);
  background: var(--bg-2);
}
.page-head > * { position: relative; z-index: 1; }
.page-head::after {
  content: "";
  position: absolute;
  inset: auto 0 0 0;
  height: 96px;
  background: url("../img/skyline.svg") center bottom / 100% 96px no-repeat;
  opacity: 0.5;
  pointer-events: none;
}

/* Curso: tarjetas de módulo -------------------------------------------- */

.modcard {
  display: flex;
  flex-direction: column;
  padding: 28px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r);
  transition: border-color 0.25s, transform 0.25s var(--ease), background 0.25s;
}
.modcard:hover {
  border-color: var(--accent-line);
  background: var(--surface-2);
  transform: translateY(-3px);
}
.modcard:hover h3 { color: var(--accent); }

.modcard__top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 18px;
}
.modcard__num {
  font-family: var(--mono);
  font-size: 1.5rem;
  font-weight: 500;
  color: var(--accent);
  letter-spacing: -0.02em;
}
.modcard__top .tag {
  font-family: var(--mono);
  font-size: 0.66rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.modcard h3 { margin-bottom: 6px; transition: color 0.2s; }
.modcard__tag {
  font-size: 0.88rem;
  color: var(--accent);
  margin-bottom: 14px;
}
.modcard__sum { font-size: 0.9rem; margin-bottom: 24px; }

.modcard__foot {
  margin-top: auto;
  display: flex;
  align-items: center;
  gap: 14px;
}
.bar {
  flex: 1;
  height: 4px;
  background: var(--bg-2);
  border-radius: 2px;
  overflow: hidden;
}
.bar span {
  display: block;
  height: 100%;
  background: var(--accent);
  border-radius: 2px;
  transition: width 0.4s var(--ease);
}
.modcard__meta {
  font-family: var(--mono);
  font-size: 0.7rem;
  color: var(--muted);
  white-space: nowrap;
}

/* Curso: temario dentro de la tarjeta ------------------------------------ */

.modcard__topics {
  list-style: none;
  padding: 0;
  margin: 0 0 22px;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}
.modcard__topics li {
  padding: 4px 10px;
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: 100px;
  font-size: 0.76rem;
  color: var(--text-2);
  line-height: 1.4;
}
.card .modcard__topics { margin-bottom: 0; }

.modcard.is-soon { opacity: 0.72; }
.modcard.is-soon:hover { transform: none; border-color: var(--border-2); }
.modcard.is-soon:hover h3 { color: var(--text); }
.modcard.is-soon .modcard__num { color: var(--muted); }
.modcard.is-soon .tag {
  background: transparent;
  border-color: var(--border-2);
  color: var(--muted);
}

/* Curso: bloques por nivel ------------------------------------------------ */

.levelblock { margin-bottom: clamp(48px, 6vw, 80px); scroll-margin-top: 110px; }
.levelblock:last-child { margin-bottom: 0; }

.levelhead {
  display: flex;
  align-items: center;
  gap: 22px;
  padding-bottom: 22px;
  margin-bottom: 26px;
  border-bottom: 1px solid var(--border);
}
.levelhead__n {
  flex-shrink: 0;
  padding: 8px 15px;
  background: var(--accent-soft);
  border: 1px solid var(--accent-line);
  border-radius: var(--r-sm);
  font-family: var(--mono);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
}
.levelhead h2 { font-size: clamp(1.4rem, 2.6vw, 1.9rem); margin-bottom: 5px; }
.levelhead p { font-size: 0.9rem; margin: 0; }
.levelhead__meta {
  margin-left: auto;
  flex-shrink: 0;
  font-size: 0.75rem;
  color: var(--muted);
  white-space: nowrap;
}

/* Navegación rápida por niveles */
.levelnav {
  display: flex;
  flex-wrap: wrap;
  gap: 9px;
  margin-bottom: clamp(40px, 5vw, 60px);
}

.crumb {
  display: inline-block;
  margin-bottom: 16px;
  font-family: var(--mono);
  font-size: 0.74rem;
  letter-spacing: 0.06em;
  color: var(--muted);
  transition: color 0.2s;
}
.crumb:hover { color: var(--accent); }

/* Portada: bloque de marca ------------------------------------------------ */

.brandhero {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: clamp(48px, 7vw, 88px) 0 clamp(28px, 4vw, 44px);
}
.brandhero__logo {
  width: min(560px, 78vw);
  height: auto;
  filter: drop-shadow(0 0 34px rgba(0, 194, 255, 0.42))
          drop-shadow(0 0 90px rgba(0, 194, 255, 0.16));
  animation: brandin 1.1s var(--ease) both;
}
@keyframes brandin {
  from { opacity: 0; transform: translateY(14px) scale(0.985); }
  to   { opacity: 1; transform: none; }
}
.brandhero__tagline {
  margin-top: 22px;
  font-family: var(--mono);
  font-size: clamp(0.68rem, 1.4vw, 0.82rem);
  font-weight: 500;
  letter-spacing: 0.38em;
  text-transform: uppercase;
  color: var(--accent);
  padding-left: 0.38em;
}
.brandhero__rule {
  width: 74px;
  height: 1px;
  margin-top: 26px;
  background: linear-gradient(90deg, transparent, var(--accent-line), transparent);
}

/* Monograma como marca de agua */
.watermark {
  position: absolute;
  right: -4%;
  top: 50%;
  translate: 0 -50%;
  width: min(560px, 46vw);
  opacity: 0.045;
  pointer-events: none;
  user-select: none;
}

/* Cifras de marca */
.brandstats {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0;
  margin-top: 34px;
  border: 1px solid var(--border);
  border-radius: 100px;
  background: rgba(13, 20, 28, 0.6);
  backdrop-filter: blur(8px);
  overflow: hidden;
}
.brandstats span {
  padding: 11px 26px;
  font-family: var(--mono);
  font-size: 0.76rem;
  letter-spacing: 0.06em;
  color: var(--text-2);
  border-right: 1px solid var(--border);
}
.brandstats span:last-child { border-right: 0; }

/* Curso: lector --------------------------------------------------------- */

.reader {
  display: grid;
  grid-template-columns: 268px 1fr;
  gap: clamp(32px, 5vw, 64px);
  align-items: start;
}

.side {
  position: sticky;
  top: calc(var(--nav-h) + 28px);
  padding: 24px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r);
}
.side__title {
  font-family: var(--mono);
  font-size: 0.68rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
  margin: 0 0 14px;
}
.side__list {
  list-style: none;
  counter-reset: none;
  padding: 0;
  margin: 0 0 26px;
  display: grid;
  gap: 3px;
}
.side__list a {
  display: flex;
  gap: 11px;
  align-items: flex-start;
  padding: 9px 10px;
  border-radius: var(--r-sm);
  font-size: 0.87rem;
  line-height: 1.4;
  color: var(--text-2);
  transition: background 0.2s, color 0.2s;
}
.side__list a:hover { background: var(--bg-2); color: var(--text); }
.side__list a.is-current {
  background: var(--accent-soft);
  color: var(--accent);
  font-weight: 520;
}
.side__n {
  flex-shrink: 0;
  width: 19px; height: 19px;
  display: grid;
  place-items: center;
  margin-top: 1px;
  border: 1px solid var(--border-2);
  border-radius: 50%;
  font-family: var(--mono);
  font-size: 0.65rem;
  color: var(--muted);
}
.side__list a.is-current .side__n { border-color: var(--accent); color: var(--accent); }
.side__list a.is-done .side__n {
  background: var(--accent-soft);
  border-color: var(--accent-line);
  color: var(--accent);
}
.side__outcomes { border-top: 1px solid var(--border); padding-top: 20px; }
.side__outcomes ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 9px;
}
.side__outcomes li {
  position: relative;
  padding-left: 17px;
  font-size: 0.82rem;
  color: var(--text-2);
  line-height: 1.5;
}
.side__outcomes li::before {
  content: "";
  position: absolute;
  left: 0; top: 8px;
  width: 5px; height: 5px;
  border-radius: 50%;
  background: var(--accent);
}

.lesson__meta {
  display: flex;
  gap: 16px;
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 16px;
}
.lesson__meta .mono { color: var(--accent); }
.lesson__title {
  font-size: clamp(1.8rem, 3.4vw, 2.5rem);
  margin-bottom: 32px;
}
.lesson__body { max-width: 70ch; }
.lesson__body > *:first-child { margin-top: 0; }

.lessonnav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-top: 52px;
  padding-top: 28px;
  border-top: 1px solid var(--border);
}

/* Idea clave ------------------------------------------------------------ */

.keypoint {
  margin: 28px 0;
  padding: 22px 24px;
  background: linear-gradient(100deg, var(--accent-soft), transparent 70%), var(--surface);
  border: 1px solid var(--accent-line);
  border-radius: var(--r);
}
.keypoint__tag {
  display: inline-block;
  margin-bottom: 9px;
  font-family: var(--mono);
  font-size: 0.66rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
}
.keypoint p {
  font-size: 1rem;
  color: var(--text);
  margin: 0;
  letter-spacing: -0.01em;
}

/* Tablas de datos -------------------------------------------------------- */

.tablewrap {
  margin: 26px 0;
  overflow-x: auto;
  border: 1px solid var(--border);
  border-radius: var(--r);
}
table.data {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.88rem;
}
table.data th,
table.data td {
  padding: 12px 16px;
  text-align: left;
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}
table.data th {
  background: var(--bg-2);
  font-family: var(--mono);
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}
table.data td { color: var(--text-2); }
table.data td:not(:first-child) { font-variant-numeric: tabular-nums; }
table.data tbody tr:last-child td { border-bottom: 0; }
table.data tbody tr:hover td { background: var(--surface-2); }
table.data strong { color: var(--text); }

/* Autocomprobación -------------------------------------------------------- */

.quiz {
  margin: 32px 0;
  padding: 24px;
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: var(--r);
}
.quiz__tag {
  display: inline-block;
  margin-bottom: 10px;
  font-family: var(--mono);
  font-size: 0.66rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
}
.quiz__q {
  font-size: 1rem;
  color: var(--text);
  margin-bottom: 16px;
  letter-spacing: -0.01em;
}
.quiz__opts { display: grid; gap: 8px; }
.quiz__opt {
  padding: 13px 16px;
  text-align: left;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r-sm);
  color: var(--text-2);
  font-size: 0.9rem;
  line-height: 1.45;
  transition: all 0.2s;
}
.quiz__opt:hover:not(:disabled) {
  border-color: var(--accent-line);
  background: var(--surface-2);
  color: var(--text);
}
.quiz__opt:disabled { cursor: default; opacity: 0.55; }
.quiz__opt.is-right {
  opacity: 1;
  border-color: var(--up);
  background: rgba(61, 220, 151, 0.1);
  color: var(--up);
}
.quiz__opt.is-wrong {
  opacity: 1;
  border-color: var(--down);
  background: rgba(255, 95, 109, 0.09);
  color: var(--down);
}
.quiz__explain {
  margin: 16px 0 0;
  padding-top: 16px;
  border-top: 1px solid var(--border);
  font-size: 0.88rem;
}

.byline {
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  color: var(--muted);
  margin-top: 16px;
}

/* Aviso ---------------------------------------------------------------- */

.notice {
  display: flex;
  gap: 14px;
  padding: 18px 20px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-left: 2px solid var(--accent);
  border-radius: var(--r-sm);
}
.notice svg { flex-shrink: 0; color: var(--accent); margin-top: 2px; }
.notice p { font-size: 0.88rem; margin: 0; }

/* Pie ------------------------------------------------------------------ */

.footer {
  border-top: 1px solid var(--border);
  background: var(--bg-2);
  padding-top: clamp(56px, 7vw, 80px);
}
.footer__top {
  display: grid;
  grid-template-columns: 1.7fr 1fr 1fr 1fr;
  gap: 44px;
  padding-bottom: 52px;
}
.footer__about p {
  font-size: 0.9rem;
  max-width: 34ch;
  margin: 16px 0 20px;
}
.footer h3 {
  font-family: var(--mono);
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 16px;
}
.footer ul { list-style: none; padding: 0; margin: 0; display: grid; gap: 11px; }
.footer ul a {
  font-size: 0.9rem;
  color: var(--text-2);
  transition: color 0.2s;
}
.footer ul a:hover { color: var(--accent); }

.socials { display: flex; gap: 9px; }
.socials a {
  width: 36px; height: 36px;
  display: grid;
  place-items: center;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r-sm);
  color: var(--text-2);
  transition: all 0.2s;
}
.socials a:hover {
  border-color: var(--accent-line);
  background: var(--accent-soft);
  color: var(--accent);
}

.footer__legal {
  padding: 26px 0 32px;
  border-top: 1px solid var(--border);
}
.footer__disclaimer {
  font-size: 0.78rem;
  color: var(--muted);
  line-height: 1.6;
  max-width: 90ch;
  margin-bottom: 20px;
}
.footer__bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  font-size: 0.8rem;
  color: var(--muted);
}
.footer__bar nav { display: flex; flex-wrap: wrap; gap: 20px; }
.footer__bar a { transition: color 0.2s; }
.footer__bar a:hover { color: var(--accent); }

/* Cabecera de sección con enlace a la derecha ---------------------------- */

.section-head--split {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
  max-width: none;
}
.section-head--split > div { max-width: 66ch; }
.section-head--split .link-arrow { flex-shrink: 0; padding-bottom: 8px; }

/* Rejilla de la página de noticias --------------------------------------- */

.newsgrid {
  display: grid;
  grid-template-columns: 1fr 340px;
  gap: clamp(20px, 3vw, 32px);
  align-items: start;
}
.newsgrid > aside { display: grid; gap: 20px; }

/* Altura de los widgets, reducible en pantallas pequeñas ------------------ */

.tvbox { height: var(--tvh); }

/* Animación de entrada -------------------------------------------------- */

.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.6s var(--ease), transform 0.6s var(--ease);
}
.reveal.is-in { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
  .reveal { opacity: 1; transform: none; }
}

/* Responsive ----------------------------------------------------------- */

@media (max-width: 980px) {
  .grid--4 { grid-template-columns: repeat(2, 1fr); }
  .stats { grid-template-columns: repeat(2, 1fr); }
  .stat:nth-child(2) { border-right: 0; }
  .stat:nth-child(-n+2) { border-bottom: 1px solid var(--border); }
  .footer__top { grid-template-columns: 1fr 1fr; gap: 36px; }
  .footer__about { grid-column: 1 / -1; }
  .founder { grid-template-columns: 1fr; }
  .founder__photo { max-width: 300px; }
}

@media (max-width: 980px) {
  .reader { grid-template-columns: 1fr; }
  .side { position: static; order: 2; }
  .lesson { order: 1; }
}

@media (max-width: 1024px) {
  .nav__toggle { display: inline-flex; }

  .nav__links {
    position: fixed;
    inset: var(--nav-h) 0 auto;
    flex-direction: column;
    align-items: stretch;
    gap: 2px;
    margin: 0;
    padding: 16px 24px 24px;
    background: rgba(4, 7, 11, 0.98);
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
    border-bottom: 1px solid var(--border);
    transform: translateY(-12px);
    opacity: 0;
    visibility: hidden;
    transition: all 0.26s var(--ease);
  }
  .nav__links.is-open { transform: none; opacity: 1; visibility: visible; }
  .nav__link { padding: 13px 14px; font-size: 1rem; }

  .nav__actions .btn { display: none; }

  .grid--2, .grid--3 { grid-template-columns: 1fr; }
  .split { grid-template-columns: 1fr; }
  .subscribe__form { flex-direction: column; }
}

@media (max-width: 720px) {
  /* Noticias: la columna lateral pasa debajo */
  .newsgrid { grid-template-columns: 1fr; }

  /* Cabeceras con enlace a la derecha: el enlace baja */
  .section-head--split { flex-direction: column; align-items: flex-start; gap: 14px; }
  .section-head--split .link-arrow { padding-bottom: 0; }

  /* Curso: cabecera de nivel apilada */
  .levelhead { flex-wrap: wrap; gap: 14px; }
  .levelhead__meta { margin-left: 0; width: 100%; }

  /* Widgets: 720 px de alto en un móvil es una pared */
  .tvbox { height: min(var(--tvh), 62vh); }

  .lesson__title { margin-bottom: 24px; }
}

@media (max-width: 560px) {
  .wrap { padding-inline: 18px; }
  .grid--4 { grid-template-columns: 1fr; }
  .stats { grid-template-columns: 1fr; }
  .stat { border-right: 0; border-bottom: 1px solid var(--border); }
  .stat:last-child { border-bottom: 0; }
  .footer__top { grid-template-columns: 1fr; }
  .hero__cta .btn { width: 100%; }
  .card { padding: 22px; }
  .brand__logo { height: 24px; }

  /* Marca del hero */
  .brandhero { padding-top: 26px; }
  .brandhero__logo { width: 84vw; }
  .brandhero__tagline { letter-spacing: 0.22em; font-size: 0.62rem; }

  /* Cifras: dos columnas en vez de una tira que se parte mal */
  .brandstats {
    display: grid;
    grid-template-columns: 1fr 1fr;
    border-radius: var(--r);
    width: 100%;
  }
  .brandstats span {
    padding: 12px 10px;
    text-align: center;
    font-size: 0.72rem;
    border-bottom: 1px solid var(--border);
  }
  .brandstats span:nth-child(2n) { border-right: 0; }
  .brandstats span:nth-last-child(-n+2) { border-bottom: 0; }

  /* Curso */
  .levelhead__n { padding: 6px 12px; font-size: 0.66rem; }
  .modcard { padding: 22px; }
  .modcard__topics li { font-size: 0.72rem; padding: 3px 9px; }
  .levelnav .btn { flex: 1 1 42%; }

  /* Lector */
  .side { padding: 18px; }
  .lessonnav { flex-direction: column-reverse; align-items: stretch; gap: 10px; }
  .lessonnav .btn { width: 100%; }
  .lessonnav > span:empty { display: none; }

  /* Tablas de datos legibles sin lupa */
  table.data { font-size: 0.8rem; }
  table.data th, table.data td { padding: 10px 12px; }

  .tvbox { height: min(var(--tvh), 74vh); }
  .subscribe { padding: 30px 22px; }
}

/* Aviso emergente de convocatoria ---------------------------------------- */

.promo {
  position: fixed;
  right: 22px;
  bottom: 22px;
  z-index: 90;
  width: min(370px, calc(100vw - 32px));
  background: var(--bg-2);
  border: 1px solid var(--border-2);
  border-left: 3px solid var(--accent);
  border-radius: 12px;
  padding: 20px 22px 22px;
  box-shadow: 0 18px 50px rgba(0, 0, 0, 0.55);
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 0.35s ease, transform 0.35s ease;
}
.promo.is-in { opacity: 1; transform: translateY(0); }

.promo__tag {
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
}
.promo h3 { margin: 10px 0 8px; font-size: 1.05rem; padding-right: 18px; }
.promo p  { margin: 0 0 16px; font-size: 0.88rem; color: var(--text-2); }
.promo__row { display: flex; flex-wrap: wrap; gap: 9px; align-items: center; }

.promo__close {
  position: absolute;
  top: 12px;
  right: 12px;
  width: 26px;
  height: 26px;
  display: grid;
  place-items: center;
  background: none;
  border: 0;
  border-radius: 6px;
  color: var(--muted);
  cursor: pointer;
  font-size: 1rem;
  line-height: 1;
  transition: color 0.2s, background 0.2s;
}
.promo__close:hover { color: var(--text); background: rgba(255, 255, 255, 0.06); }

.promo__later {
  background: none;
  border: 0;
  padding: 0 4px;
  font-family: inherit;
  font-size: 0.82rem;
  color: var(--muted);
  cursor: pointer;
  text-decoration: underline;
  text-underline-offset: 3px;
}
.promo__later:hover { color: var(--text-2); }

@media (max-width: 560px) {
  .promo { right: 12px; left: 12px; bottom: 12px; width: auto; padding: 18px; }
}

@media (prefers-reduced-motion: reduce) {
  .promo { transition: none; }
}