/* ==========================================================================
   Bochikua.ia - sistema de marca
   Tema claro/oscuro con variables de marca.
   Radios: tarjetas 16px, botones píldora, imágenes 16px.
   ========================================================================== */

:root {
  color-scheme: dark;
  --navy: #0B1C2A;
  --navy-oscuro: #06111B;
  --navy-suave: #10283B;
  --verde: #8DC63F;
  --teal: #34A0AA;
  --texto: #F5F8FA;
  --texto-suave: #AEC3D2;
  --borde: rgba(52, 160, 170, 0.28);
  --nav-bg: rgba(6, 17, 27, .82);
  --btn-primary-text: #10240A;
  --ghost-bg: rgba(6, 17, 27, .35);
  --ghost-border: rgba(245, 248, 250, .45);
  --hero-bottom: var(--navy);
  --shadow-fuerte: rgba(3, 10, 16, .6);
  --shadow-media: rgba(3, 10, 16, .55);
  --linea-suave: rgba(52, 160, 170, .18);
  --linea-fina: rgba(52, 160, 170, .16);
  --youtube-glow: rgba(52, 160, 170, .22);
  --footer-muted: rgba(174, 195, 210, .6);
  --secretaria-watermark-opacity: .08;
  --secretaria-watermark-filter: invert(1);
  --secretaria-bg-accent-a: rgba(52, 160, 170, .16);
  --secretaria-bg-accent-b: rgba(141, 198, 63, .09);
  --secretaria-bg-grid: rgba(174, 195, 210, .055);
  --arq-bg-accent-a: rgba(52, 160, 170, .14);
  --arq-bg-accent-b: rgba(141, 198, 63, .075);
  --arq-bg-line: rgba(174, 195, 210, .06);
  --arq-bg-ring: rgba(52, 160, 170, .09);
  --radio: 16px;
  --fuente-display: "Outfit", "Segoe UI", system-ui, sans-serif;
  --fuente-cuerpo: "Segoe UI", system-ui, -apple-system, sans-serif;
}

html[data-theme="light"] {
  color-scheme: light;
  --navy: #F6F2EA;
  --navy-oscuro: #EDE5D9;
  --navy-suave: #FFFFFF;
  --verde: #5F8E24;
  --teal: #287D86;
  --texto: #10202C;
  --texto-suave: #526676;
  --borde: rgba(38, 125, 134, 0.22);
  --nav-bg: rgba(246, 242, 234, .86);
  --btn-primary-text: #FFFFFF;
  --ghost-bg: rgba(255, 255, 255, .52);
  --ghost-border: rgba(16, 32, 44, .24);
  --hero-bottom: var(--navy);
  --shadow-fuerte: rgba(35, 47, 54, .18);
  --shadow-media: rgba(35, 47, 54, .16);
  --linea-suave: rgba(38, 125, 134, .16);
  --linea-fina: rgba(38, 125, 134, .14);
  --youtube-glow: rgba(40, 125, 134, .16);
  --footer-muted: rgba(82, 102, 118, .7);
  --secretaria-watermark-opacity: .11;
  --secretaria-watermark-filter: none;
  --secretaria-bg-accent-a: rgba(40, 125, 134, .11);
  --secretaria-bg-accent-b: rgba(95, 142, 36, .08);
  --secretaria-bg-grid: rgba(40, 125, 134, .07);
  --arq-bg-accent-a: rgba(40, 125, 134, .105);
  --arq-bg-accent-b: rgba(95, 142, 36, .07);
  --arq-bg-line: rgba(40, 125, 134, .07);
  --arq-bg-ring: rgba(40, 125, 134, .09);
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  background: var(--navy);
  color: var(--texto);
  font-family: var(--fuente-cuerpo);
  font-size: 17px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  transition: background-color .25s ease, color .25s ease;
}

img { display: block; max-width: 100%; }

.container {
  max-width: 1180px;
  margin-inline: auto;
  padding-inline: 24px;
}

h1, h2, h3 { font-family: var(--fuente-display); letter-spacing: -0.02em; }

h2 { font-size: clamp(1.7rem, 3.5vw, 2.5rem); line-height: 1.15; }

.lead {
  color: var(--texto-suave);
  max-width: 62ch;
  margin-top: 14px;
  font-size: 1.06rem;
}

.lead a { color: var(--verde); text-decoration-color: rgba(141, 198, 63, .4); }

.eyebrow {
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--verde);
  font-weight: 600;
  margin-bottom: 18px;
}

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

.btn {
  display: inline-block;
  font-family: var(--fuente-display);
  font-weight: 600;
  border-radius: 999px;
  padding: 13px 28px;
  text-decoration: none;
  transition: transform .18s cubic-bezier(.16, 1, .3, 1), background .18s, border-color .18s, color .18s;
}

.btn:active { transform: translateY(1px) scale(.98); }

.btn-primary {
  background: var(--verde);
  color: var(--btn-primary-text);
}
.btn-primary:hover { filter: brightness(1.06); transform: translateY(-2px); }

.btn-ghost {
  color: var(--texto);
  border: 1.5px solid var(--ghost-border);
  background: var(--ghost-bg);
  backdrop-filter: blur(4px);
}
.btn-ghost:hover { border-color: var(--verde); color: var(--verde); transform: translateY(-2px); }

.btn-sm { padding: 9px 20px; font-size: .92rem; }
.btn-xl { padding: 16px 42px; font-size: 1.1rem; margin-top: 26px; }

a:focus-visible, .btn:focus-visible {
  outline: 2px solid var(--verde);
  outline-offset: 3px;
}

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

.nav {
  position: sticky;
  top: 0;
  z-index: 40;
  display: flex;
  align-items: center;
  gap: 28px;
  height: 68px;
  padding-inline: clamp(20px, 4vw, 48px);
  background: var(--nav-bg);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--borde);
}

.nav-brand { display: flex; align-items: center; gap: 10px; text-decoration: none; }

.wordmark {
  font-family: var(--fuente-display);
  font-weight: 700;
  font-size: 1.18rem;
  color: var(--texto);
}
.wordmark em { font-style: normal; color: var(--verde); }

.nav-links { display: flex; gap: 24px; margin-left: auto; }
.nav-links a {
  color: var(--texto-suave);
  text-decoration: none;
  font-size: .95rem;
  transition: color .15s;
}
.nav-links a:hover { color: var(--verde); }

.nav-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.theme-toggle {
  width: 42px;
  height: 42px;
  border: 1px solid var(--borde);
  border-radius: 50%;
  background: var(--ghost-bg);
  color: var(--texto);
  display: grid;
  place-items: center;
  cursor: pointer;
  transition: transform .18s cubic-bezier(.16, 1, .3, 1), background .18s, border-color .18s, color .18s;
}

.theme-toggle:hover {
  border-color: var(--verde);
  color: var(--verde);
  transform: translateY(-2px);
}

.theme-toggle:active { transform: translateY(1px) scale(.96); }

.theme-toggle:focus-visible {
  outline: 2px solid var(--verde);
  outline-offset: 3px;
}

.theme-icon {
  width: 19px;
  height: 19px;
  grid-area: 1 / 1;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.9;
  stroke-linecap: round;
  stroke-linejoin: round;
  transition: opacity .18s ease, transform .18s ease;
}

.theme-icon-moon { opacity: 0; transform: rotate(-18deg) scale(.75); }
html[data-theme="light"] .theme-icon-sun { opacity: 0; transform: rotate(18deg) scale(.75); }
html[data-theme="light"] .theme-icon-moon { opacity: 1; transform: none; }

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

.hero {
  position: relative;
  min-height: calc(100dvh - 68px);
  display: flex;
  align-items: center;
  overflow: hidden;
  --texto: #F5F8FA;
  --texto-suave: #D3E1EA;
  --ghost-border: rgba(245, 248, 250, .45);
  --ghost-bg: rgba(6, 17, 27, .35);
  color: var(--texto);
}

.hero-bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-scrim {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(100deg, rgba(6, 17, 27, .92) 0%, rgba(6, 17, 27, .55) 52%, rgba(6, 17, 27, .18) 100%),
    linear-gradient(to top, var(--hero-bottom) 0%, transparent 30%);
}

.hero-content {
  position: relative;
  z-index: 1;
  width: 100%;
  padding-block: 80px;
}

.hero h1 {
  font-size: clamp(2.2rem, 5.2vw, 3.9rem);
  line-height: 1.08;
  max-width: 16ch;
}

.hero-sub {
  margin-top: 20px;
  max-width: 46ch;
  color: var(--texto-suave);
  font-size: 1.12rem;
}

.hero-ctas { display: flex; gap: 14px; margin-top: 32px; flex-wrap: wrap; }

/* ---------- Método (split) ---------- */

.proceso { padding-block: 110px; }

.split {
  display: grid;
  grid-template-columns: 5fr 7fr;
  gap: clamp(32px, 5vw, 72px);
  align-items: center;
}

.split-media img {
  border-radius: var(--radio);
  border: 1px solid var(--borde);
  box-shadow: 0 24px 60px var(--shadow-media);
}

.metodo-lista {
  list-style: none;
  margin-top: 34px;
  counter-reset: paso;
}

.metodo-lista li {
  counter-increment: paso;
  position: relative;
  padding: 22px 0 22px 64px;
}
.metodo-lista li + li { border-top: 1px solid var(--linea-suave); }

.metodo-lista li::before {
  content: counter(paso, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 24px;
  font-family: var(--fuente-display);
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--teal);
}

.metodo-lista h3 { font-size: 1.15rem; margin-bottom: 6px; }
.metodo-lista p { color: var(--texto-suave); font-size: .99rem; max-width: 52ch; }

/* ---------- Caso destacado ---------- */

.destacado {
  position: relative;
  isolation: isolate;
  /* clip (no hidden): recorta el fondo decorativo sin romper position:sticky del scrolly */
  overflow: clip;
  padding-block: 110px;
  background:
    radial-gradient(ellipse at 78% 18%, var(--secretaria-bg-accent-a), transparent 42%),
    radial-gradient(ellipse at 18% 62%, var(--secretaria-bg-accent-b), transparent 38%),
    linear-gradient(115deg, transparent 0 48%, rgba(255, 255, 255, .025) 48% 52%, transparent 52% 100%),
    var(--navy-oscuro);
  border-block: 1px solid var(--borde);
}

.destacado::before {
  content: "";
  position: absolute;
  z-index: 0;
  top: clamp(70px, 9vw, 150px);
  right: max(-110px, calc((100vw - 1180px) / 2 - 130px));
  width: min(62vw, 780px);
  /* Isotipo oficial de Secretaría Exprés (backend/media/logos/logo2.png), silueta con alfa */
  aspect-ratio: 900 / 636;
  background: url("assets/img/secretaria-watermark.png") center / contain no-repeat;
  opacity: var(--secretaria-watermark-opacity);
  filter: var(--secretaria-watermark-filter);
  transform: rotate(-8deg);
  pointer-events: none;
}

.destacado::after {
  content: "";
  position: absolute;
  z-index: 0;
  inset: 0;
  background-image:
    linear-gradient(var(--secretaria-bg-grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--secretaria-bg-grid) 1px, transparent 1px);
  background-size: 72px 72px;
  -webkit-mask-image: radial-gradient(ellipse at 65% 28%, black 0%, transparent 64%);
  mask-image: radial-gradient(ellipse at 65% 28%, black 0%, transparent 64%);
  opacity: .58;
  pointer-events: none;
}

.destacado > .container {
  position: relative;
  z-index: 1;
}

/* ---------- Scrollytelling (capturas reales) ---------- */

.scrolly {
  display: grid;
  grid-template-columns: 5fr 7fr;
  gap: clamp(32px, 4vw, 64px);
  margin-top: 56px;
  align-items: start;
}

.scrolly-steps { display: flex; flex-direction: column; }

.scrolly-step {
  min-height: 72vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding-block: 48px;
  opacity: .38;
  transition: opacity .4s ease;
}
.scrolly-step.active { opacity: 1; }

.scrolly-step h3 {
  font-size: 1.45rem;
  margin-bottom: 14px;
  position: relative;
  padding-left: 18px;
}
.scrolly-step h3::before {
  content: "";
  position: absolute;
  left: 0;
  top: .18em;
  bottom: .18em;
  width: 4px;
  border-radius: 2px;
  background: var(--verde);
}

.scrolly-step p { color: var(--texto-suave); font-size: 1rem; max-width: 52ch; }
.scrolly-step p + p { margin-top: 12px; }

.scrolly-step .dato {
  margin-top: 16px;
  color: var(--verde);
  font-weight: 600;
  font-size: .95rem;
}

.scrolly-inline { display: none; }

.scrolly-media {
  position: sticky;
  top: calc(68px + 10vh);
  height: min(56vh, 500px);
  border-radius: var(--radio);
  border: 1px solid var(--borde);
  background: var(--navy);
  overflow: hidden;
  box-shadow: 0 30px 80px var(--shadow-fuerte);
}

.scrolly-media img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: contain;
  padding: 14px;
  opacity: 0;
  transition: opacity .45s ease;
}
.scrolly-media img.active { opacity: 1; }

.destacado-detalle {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
  margin-top: 40px;
}

.chips {
  list-style: none;
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}
.chips li {
  font-size: .85rem;
  color: var(--texto-suave);
  border: 1px solid var(--borde);
  border-radius: 999px;
  padding: 6px 14px;
}

/* ---------- Arquitectura y seguridad ---------- */

.arquitectura {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  padding-block: 110px;
  background:
    radial-gradient(ellipse at 18% 18%, var(--arq-bg-accent-a), transparent 42%),
    radial-gradient(ellipse at 86% 58%, var(--arq-bg-accent-b), transparent 36%),
    linear-gradient(180deg, var(--navy), var(--navy) 55%, var(--navy-oscuro));
}

.arquitectura::before {
  content: "";
  position: absolute;
  z-index: 0;
  inset: 0;
  background:
    linear-gradient(90deg, transparent 0 49.7%, var(--arq-bg-line) 49.7% 50%, transparent 50% 100%),
    linear-gradient(0deg, transparent 0 49.7%, var(--arq-bg-line) 49.7% 50%, transparent 50% 100%);
  background-size: 112px 112px;
  -webkit-mask-image: radial-gradient(ellipse at 54% 42%, black 0%, transparent 68%);
  mask-image: radial-gradient(ellipse at 54% 42%, black 0%, transparent 68%);
  opacity: .82;
  pointer-events: none;
}

.arquitectura::after {
  content: "";
  position: absolute;
  z-index: 0;
  right: max(-280px, calc((100vw - 1180px) / 2 - 250px));
  top: 92px;
  width: min(62vw, 760px);
  aspect-ratio: 1;
  border: 1px solid var(--arq-bg-ring);
  border-radius: 50%;
  box-shadow:
    inset 0 0 0 90px rgba(255, 255, 255, .012),
    0 0 80px var(--arq-bg-accent-a);
  pointer-events: none;
}

.arquitectura > .container {
  position: relative;
  z-index: 1;
}

.arq-grid {
  display: grid;
  grid-template-columns: 6fr 6fr;
  gap: clamp(32px, 4vw, 64px);
  margin-top: 52px;
  align-items: start;
}

.arq-diagrama {
  border: 1px solid var(--borde);
  border-radius: var(--radio);
  background: var(--navy-suave);
  padding: 26px 20px 18px;
  position: sticky;
  top: calc(68px + 4vh);
}
.arq-diagrama svg { width: 100%; height: auto; }
.arq-diagrama figcaption {
  margin-top: 12px;
  color: var(--texto-suave);
  font-size: .88rem;
  text-align: center;
}

.arq-body p { color: var(--texto-suave); max-width: 58ch; }
.arq-body p + p { margin-top: 14px; }
.arq-body strong { color: var(--texto); }

.seguridad-lista {
  list-style: none;
  margin-top: 28px;
  display: grid;
  gap: 0;
}
.seguridad-lista li {
  padding: 16px 0 16px 34px;
  position: relative;
  color: var(--texto-suave);
  font-size: .97rem;
}
.seguridad-lista li + li { border-top: 1px solid var(--linea-fina); }
.seguridad-lista li::before {
  content: "";
  position: absolute;
  left: 4px;
  top: 22px;
  width: 14px;
  height: 14px;
  border-radius: 4px;
  border: 2px solid var(--verde);
  border-left-color: transparent;
  border-bottom-color: transparent;
  transform: rotate(45deg);
}
.seguridad-lista strong { color: var(--texto); display: block; margin-bottom: 2px; }

.tecnologias { margin-top: 72px; text-align: center; }
.tecnologias h3 { font-size: 1.1rem; color: var(--texto-suave); font-weight: 600; }

.logos {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: clamp(22px, 3.5vw, 44px);
  margin-top: 26px;
}
.logos img {
  height: 34px;
  width: 34px;
  opacity: .75;
  transition: opacity .2s, transform .2s;
}
.logos li:hover img { opacity: 1; transform: translateY(-3px); }

/* La marca de agua de Secretaría Exprés solo va en su propia sección */
.acciones::before { content: none; }

/* ---------- Granja Solar ---------- */

.granja .arq-grid { margin-top: 52px; }

.granja-foto {
  border-radius: 10px;
  margin-bottom: 22px;
}

.arq-diagrama svg { width: 100%; height: auto; }

.bloque-titulo {
  font-size: 1.2rem;
  margin-top: 34px;
  margin-bottom: 6px;
}
.arq-body .bloque-titulo:first-child { margin-top: 0; }

.bloque-lista li {
  font-size: .97rem;
  line-height: 1.55;
  padding-block: 7px;
  max-width: 58ch;
}

.granja .destacado-detalle { margin-top: 36px; }

/* ---------- Bento de proyectos ---------- */

.proyectos { padding-block: 110px; }

.bento {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 22px;
  margin-top: 48px;
}

.cell {
  border-radius: var(--radio);
  border: 1px solid var(--borde);
  background: var(--navy-suave);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform .2s cubic-bezier(.16, 1, .3, 1), border-color .2s;
}
.cell:hover { transform: translateY(-4px); border-color: rgba(141, 198, 63, .5); }

.cell-grande { grid-column: span 7; }
.cell-chart { grid-column: span 5; padding: 28px; gap: 12px; }
.bento > .cell { grid-column: span 6; } /* ventas + angelica, mitad y mitad */

.cell-img { width: 100%; height: 240px; object-fit: cover; }
.cell-img-alta { height: 210px; object-position: center 30%; }

.cell-body { padding: 24px 26px 26px; display: flex; flex-direction: column; gap: 10px; flex: 1; }
.cell-body h3 { font-size: 1.2rem; }
.cell-body p { color: var(--texto-suave); font-size: .96rem; flex: 1; }

.cell-chart h3 { font-size: 1.2rem; }
.cell-chart p { color: var(--texto-suave); font-size: .96rem; }
.cell-chart svg { width: 100%; height: auto; margin-top: auto; }

.cell-tinta {
  background: linear-gradient(150deg, rgba(52, 160, 170, .16), rgba(11, 28, 42, 0) 55%), var(--navy-suave);
}

html[data-theme="light"] .cell-tinta {
  background: linear-gradient(150deg, rgba(40, 125, 134, .12), rgba(255, 255, 255, 0) 58%), var(--navy-suave);
}

.cell-link {
  color: var(--verde);
  font-weight: 600;
  font-size: .93rem;
  text-decoration: none;
  align-self: flex-start;
}
.cell-link::after { content: " \2192"; }
.cell-link:hover { text-decoration: underline; }

.mini-datos { list-style: none; display: grid; gap: 8px; }
.mini-datos li { color: var(--texto-suave); font-size: .93rem; }
.mini-datos strong { color: var(--texto); }

/* ---------- Cifras ---------- */

.cifras {
  background: var(--navy-oscuro);
  border-block: 1px solid var(--borde);
  padding-block: 56px;
}

.cifras-fila {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  text-align: center;
}

.cifra strong {
  display: block;
  font-family: var(--fuente-display);
  font-size: clamp(2rem, 4vw, 3rem);
  color: var(--verde);
  line-height: 1.1;
}
.cifra span { color: var(--texto-suave); font-size: .93rem; }

/* ---------- YouTube ---------- */

.youtube { padding-block: 110px; }

.yt-caja {
  display: grid;
  grid-template-columns: 7fr 4fr;
  align-items: center;
  gap: 40px;
  border: 1px solid var(--borde);
  border-radius: var(--radio);
  padding: clamp(32px, 5vw, 64px);
  background:
    radial-gradient(ellipse at 85% 20%, var(--youtube-glow), transparent 60%),
    var(--navy-suave);
}

.yt-texto .btn { margin-top: 26px; }

.yt-marca { display: flex; justify-content: center; }
.yt-marca img { width: min(200px, 60%); opacity: .9; filter: drop-shadow(0 12px 40px rgba(141, 198, 63, .25)); }

/* ---------- Contacto ---------- */

.contacto {
  padding-block: 130px;
  text-align: center;
  background: linear-gradient(to bottom, var(--navy), var(--navy-oscuro));
}
.contacto .lead { margin-inline: auto; }

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

.pie {
  border-top: 1px solid var(--borde);
  background: var(--navy-oscuro);
  padding-block: 44px;
}

.pie-fila { display: grid; gap: 20px; }

.pie-marca { display: flex; align-items: center; gap: 10px; }

.pie-links { display: flex; gap: 22px; flex-wrap: wrap; }
.pie-links a { color: var(--texto-suave); text-decoration: none; font-size: .93rem; }
.pie-links a:hover { color: var(--verde); }

.pie-nota { color: var(--footer-muted); font-size: .85rem; }

/* ---------- Animaciones de entrada ---------- */

@media (prefers-reduced-motion: no-preference) {
  .reveal {
    opacity: 0;
    transform: translateY(22px);
    transition: opacity .7s cubic-bezier(.16, 1, .3, 1), transform .7s cubic-bezier(.16, 1, .3, 1);
  }
  .reveal.visible { opacity: 1; transform: none; }

  .hero-content > * {
    animation: heroIn .8s cubic-bezier(.16, 1, .3, 1) backwards;
  }
  .hero-content > *:nth-child(2) { animation-delay: .1s; }
  .hero-content > *:nth-child(3) { animation-delay: .2s; }
  .hero-content > *:nth-child(4) { animation-delay: .3s; }

  @keyframes heroIn {
    from { opacity: 0; transform: translateY(26px); }
    to   { opacity: 1; transform: none; }
  }
}

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

@media (max-width: 900px) {
  /* Scrollytelling: en móvil cada paso muestra su propia captura */
  .destacado::before {
    top: 110px;
    right: -180px;
    width: min(820px, 120vw);
    opacity: calc(var(--secretaria-watermark-opacity) * .8);
  }
  .scrolly { grid-template-columns: 1fr; }
  .scrolly-media { display: none; }
  .scrolly-step { min-height: 0; opacity: 1; padding-block: 32px; }
  .scrolly-inline {
    display: block;
    margin-top: 20px;
    border: 1px solid var(--borde);
    border-radius: var(--radio);
    overflow: hidden;
    background: var(--navy);
  }
  .arq-grid { grid-template-columns: 1fr; }
  .arq-diagrama { position: static; }
  .bento { grid-template-columns: 1fr 1fr; }
  .cell-grande, .cell-chart,
  .bento > .cell:nth-child(n+3) { grid-column: span 2; }
  .split { grid-template-columns: 1fr; }
  .split-media { max-width: 460px; }
  .yt-caja { grid-template-columns: 1fr; }
  .yt-marca { order: -1; }
  .yt-marca img { width: 120px; }
}

@media (max-width: 768px) {
  .nav-links { display: none; }
  .nav {
    gap: 14px;
    padding-inline: 16px;
  }
  .nav-actions {
    margin-left: auto;
    gap: 8px;
  }
  .theme-toggle {
    width: 38px;
    height: 38px;
  }
  .nav .btn-sm {
    padding-inline: 14px;
  }
  .cifras-fila { grid-template-columns: 1fr 1fr; gap: 32px; }
  .proceso, .destacado, .proyectos, .youtube { padding-block: 72px; }
  .contacto { padding-block: 88px; }
  .bento { grid-template-columns: 1fr; }
  .cell-grande, .cell-chart,
  .bento > .cell:nth-child(n+3) { grid-column: span 1; }
}