/* NSAC — NASA Space Apps 2026
   Dirección: name-as-monument · Chivo · Charcoal and sage */

:root {
  --bg: #1c1c1c;
  --surface: #262626;
  --ink: #f1f1ef;
  --muted: #9a9b96;
  --accent: #8fa68e;
  --accent-ink: #1c1c1c;
  --field-1: #c8c5ba;
  --field-1-ink: #1c1c1c;
  --scrim: rgba(28, 28, 28, 0.82);

  --step-small: clamp(0.8125rem, 0.79rem + 0.1vw, 0.875rem);
  --step-body: clamp(1.0625rem, 1rem + 0.25vw, 1.1875rem);
  --step-lead: clamp(1.25rem, 1.1rem + 0.7vw, 1.625rem);
  --step-head: clamp(2.5rem, 1.2rem + 5vw, 5.5rem);
  --step-cd: clamp(3.5rem, 13vw, 15rem);

  --mx: clamp(20px, 2.2vw, 32px);
}

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

html { scroll-behavior: smooth; scrollbar-gutter: stable both-edges; }

body {
  background: var(--bg);
  color: var(--ink);
  font-family: "Chivo", sans-serif;
  font-weight: 400;
  font-size: var(--step-body);
  line-height: 1.45;
  -webkit-font-smoothing: antialiased;
}

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

a { color: var(--ink); }

a:focus-visible, button:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 3px;
}

img { display: block; }

/* ---- escena del planeta ---- */

#planeta {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  display: block;
}

main, .top, .footer { position: relative; z-index: 1; }

/* ---- barra superior ---- */

.top {
  position: fixed;
  top: 0; left: 0; right: 0;
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  padding: 24px var(--mx);
  z-index: 10;
}

.wordmark {
  font-weight: 900;
  font-size: 1rem;
  letter-spacing: -0.01em;
  text-decoration: none;
}

.nav { display: flex; gap: 28px; }
.nav a {
  font-weight: 700;
  font-size: 0.9375rem;
  text-decoration: none;
  transition: color .2s ease;
}
.nav a:hover { color: var(--accent); }

/* ---- hero ---- */

.hero {
  min-height: 100svh;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 96px var(--mx) 0;
  background: rgba(28, 28, 28, 0.18);
}

.hero__top {
  max-width: 34ch;
  margin-left: auto;
  text-align: right;
}

.hero__claim {
  font-size: var(--step-lead);
  font-weight: 400;
  line-height: 1.35;
  letter-spacing: -0.01em;
  max-width: 34ch;
}

.btn {
  display: inline-block;
  margin-top: 24px;
  padding: 14px 28px;
  background: var(--accent);
  color: var(--accent-ink);
  font-weight: 700;
  font-size: 0.9375rem;
  text-decoration: none;
  border: none;
  cursor: pointer;
  transition: transform .18s ease, background-color .18s ease;
}
.btn:hover { transform: translateY(-2px); }
.btn:active { transform: translateY(0); }

.hero__cd { padding-bottom: 14px; }
.hero__cd .cd { margin: 0; }

.hero__live {
  font-size: var(--step-head);
  font-weight: 900;
  letter-spacing: -0.04em;
  line-height: 0.95;
  text-transform: uppercase;
  margin-bottom: 16px;
}

.cd {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  font-variant-numeric: tabular-nums;
}

.cd__u { display: flex; flex-direction: column; }

.cd__n {
  font-size: var(--step-cd);
  font-weight: 900;
  letter-spacing: -0.05em;
  line-height: 0.85;
}

.cd__sep {
  font-size: calc(var(--step-cd) * 0.5);
  font-weight: 900;
  line-height: 1;
  color: var(--muted);
  padding-bottom: calc(var(--step-cd) * 0.04);
}

.cd__l {
  font-size: var(--step-small);
  color: var(--muted);
  margin-top: 10px;
}

/* ---- secciones ---- */

.h2 {
  font-size: var(--step-head);
  font-weight: 900;
  letter-spacing: -0.04em;
  line-height: 0.95;
  text-transform: uppercase;
}

/* intro: columna estrecha sobre la escena */
.intro {
  padding: 200px var(--mx) 220px;
  background: rgba(28, 28, 28, 0.3);
}

.intro__col {
  width: 340px;
  max-width: 78%;
  margin-left: auto;
  margin-right: 4%;
  background: var(--scrim);
  padding: 36px 32px 40px;
}

.intro__col .h2 { font-size: clamp(1.75rem, 3vw, 2.5rem); margin-bottom: 24px; }

.intro__col p { font-size: 1rem; line-height: 1.55; margin-top: 14px; color: var(--ink); }
.intro__col .intro__first { color: var(--ink); font-weight: 700; }
.intro__col a { color: var(--ink); }

.intro__audio { margin-top: 28px; }
.intro__audio-label { font-size: var(--step-small); color: var(--muted); margin-bottom: 10px; }
.intro__audio audio { width: 100%; height: 40px; display: block; }
.intro__audio-link {
  display: inline-block;
  font-size: var(--step-small);
  margin-top: 10px;
}

/* banda de medios: la Tierra real */
.media-band {
  background: var(--bg);
  padding: 96px var(--mx) 120px;
}

.media-band__h { margin-bottom: 56px; }

.media-band__vid {
  width: 100%;
  height: auto;
  display: block;
}

.media-band__row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 64px;
  align-items: start;
}

.media-band__row figure { margin: 0; }

.media-band__row img {
  width: 100%;
  height: auto;
  display: block;
  animation: drift 36s ease-in-out infinite alternate;
}

.media-band__row figure:nth-child(2) img { animation-delay: -12s; }
.media-band__row figure:nth-child(3) img { animation-delay: -24s; }

@keyframes drift {
  from { transform: scale(1) translateY(0); }
  to { transform: scale(1.04) translateY(-6px); }
}

.media-band__cap {
  font-size: var(--step-small);
  color: var(--muted);
  margin-top: 16px;
  max-width: 46ch;
}

/* respiro: se ve más del planeta */
.planet-gap { height: 46svh; background: rgba(28, 28, 28, 0.22); }

/* retos: menú con fotos */
.retos {
  background: var(--bg);
  padding: 96px var(--mx) 120px;
}

.retos__cat + .retos__cat { margin-top: 96px; }

.cat {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  font-size: clamp(2rem, 3.4vw, 3.125rem);
  font-weight: 900;
  letter-spacing: -0.04em;
  line-height: 1;
  text-transform: uppercase;
  margin-bottom: 40px;
}

.cat__n {
  font-size: 1rem;
  font-weight: 400;
  color: var(--muted);
  letter-spacing: 0;
  text-transform: none;
}

.retos__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  column-gap: 64px;
  row-gap: 36px;
}

.reto { display: flex; gap: 20px; }

.reto__body { min-width: 0; }

.reto__img {
  width: 128px;
  height: 128px;
  object-fit: cover;
  flex-shrink: 0;
  transition: transform .25s ease;
}
.reto:hover .reto__img { transform: scale(1.08); }

.reto__line {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 16px;
}

.reto__name {
  font-weight: 700;
  font-size: 1.0625rem;
  text-decoration: none;
  line-height: 1.3;
}
.reto__name:hover { text-decoration: underline; }

.reto__nivel {
  font-size: var(--step-small);
  color: var(--muted);
  white-space: nowrap;
  flex-shrink: 0;
}

.reto__desc {
  font-size: 1rem;
  color: var(--ink);
  line-height: 1.5;
  margin-top: 6px;
  max-width: 38ch;
}

.reto__temas {
  font-size: var(--step-small);
  color: var(--accent);
  margin-top: 8px;
}

/* quién soy */
.about {
  background: var(--bg);
  padding: 96px var(--mx) 140px;
}

.about .h2 { margin-bottom: 80px; }

.about__row {
  display: flex;
  align-items: flex-start;
  margin-bottom: 120px;
}

.about__facts {
  width: 34%;
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.fact__k {
  display: block;
  font-size: var(--step-small);
  color: var(--muted);
}
.fact__v {
  display: block;
  font-size: var(--step-small);
  color: var(--ink);
  margin-top: 2px;
}

.about__p {
  font-size: var(--step-lead);
  line-height: 1.35;
  letter-spacing: -0.01em;
  max-width: 30ch;
}

.about__lists {
  display: flex;
  gap: 64px;
}

.record { list-style: none; width: 260px; }
.record li {
  display: flex;
  justify-content: space-between;
  font-size: var(--step-small);
  padding: 5px 0;
}
.record__y { color: var(--muted); }
.record a { color: var(--ink); }

/* cta invertido */
.cta {
  background: var(--field-1);
  color: var(--field-1-ink);
  min-height: 90svh;
  padding: 96px var(--mx) 40px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.cta__h {
  font-size: clamp(3rem, 10vw, 9rem);
  font-weight: 900;
  letter-spacing: -0.05em;
  line-height: 0.9;
  max-width: 12ch;
}

.cta__row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 32px;
}

.cta__p { font-size: var(--step-lead); max-width: 26ch; }

.btn--accent { background: var(--field-1-ink); color: var(--field-1); }

/* footer */
.footer {
  background: var(--ink);
  color: var(--bg);
  min-height: 100svh;
  display: grid;
  grid-template-rows: auto 1fr auto auto;
  padding: 40px var(--mx) 24px;
}

.footer__cols {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
}

.fcol a, .fcol__t {
  display: block;
  font-size: 1rem;
  color: #4a4a46;
  text-decoration: none;
  padding: 2px 0;
}
.fcol a:hover { color: var(--bg); text-decoration: underline; }
.fcol__h { font-size: 1rem; color: var(--bg); font-weight: 700; margin-bottom: 8px; }
.fcol__t { padding: 0; margin-top: 4px; overflow-wrap: anywhere; }

.footer__word { width: 100%; align-self: end; }
.footer__word text {
  font-family: "Chivo", sans-serif;
  font-weight: 900;
  font-size: 118px;
  letter-spacing: -0.05em;
  fill: var(--bg);
}

.footer__legal {
  font-size: var(--step-small);
  color: #4a4a46;
  margin-top: 12px;
}

/* ---- movimiento: entrada de la primera pantalla ---- */

@keyframes arrive {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: none; }
}

.top .wordmark, .top .nav a, .hero__top, .hero__cd {
  animation: arrive .7s ease backwards;
}
.top .nav a:nth-child(1) { animation-delay: .1s; }
.top .nav a:nth-child(2) { animation-delay: .18s; }
.top .nav a:nth-child(3) { animation-delay: .26s; }
.hero__top { animation-delay: .2s; }
.hero__cd { animation-delay: .35s; }

.cd__sep { animation: sepblink 1s steps(2, jump-none) infinite; }
@keyframes sepblink {
  0%, 60% { opacity: 1; }
  61%, 100% { opacity: 0.25; }
}

/* ---- movimiento: entradas por sección ---- */

.rise > * {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity .7s ease, transform .7s ease;
}
.rise.on > * { opacity: 1; transform: none; }
.rise > *:nth-child(2) { transition-delay: .08s; }
.rise > *:nth-child(3) { transition-delay: .16s; }
.rise > *:nth-child(4) { transition-delay: .24s; }
.rise > *:nth-child(5) { transition-delay: .32s; }
.rise > *:nth-child(6) { transition-delay: .40s; }
.rise > *:nth-child(7) { transition-delay: .48s; }
.rise > *:nth-child(8) { transition-delay: .56s; }
.rise > *:nth-child(9) { transition-delay: .64s; }

@keyframes arrivefade {
  from { opacity: 0; }
  to { opacity: 1; }
}

@media (prefers-reduced-motion: reduce) {
  /* sin desplazamiento: solo fundidos suaves, el contenido siempre visible */
  .rise > * { opacity: 0; transform: none; transition: opacity .5s ease; }
  .rise.on > * { opacity: 1; }
  html { scroll-behavior: auto; }
  .btn:hover, .reto:hover .reto__img { transform: none; }
  .top .wordmark, .top .nav a, .hero__top, .hero__cd { animation-name: arrivefade; animation-duration: .5s; }
  .cd__sep, .media-band__row img { animation: none; }
}

/* ---- páginas internas (diario, posts) ---- */

.page {
  position: relative;
  z-index: 1;
  background: var(--bg);
  min-height: 100svh;
  padding: 120px var(--mx) 80px;
}

.page__col { max-width: 660px; }

.page h1 {
  font-size: var(--step-head);
  font-weight: 900;
  letter-spacing: -0.04em;
  line-height: 0.95;
  text-transform: uppercase;
  margin-bottom: 24px;
}

.page .page__sub { color: var(--muted); margin-bottom: 72px; }

.diary-list { list-style: none; }
.diary-list li { margin-bottom: 40px; }
.diary-list a {
  font-size: var(--step-lead);
  font-weight: 700;
  letter-spacing: -0.01em;
  text-decoration: none;
}
.diary-list a:hover { text-decoration: underline; }
.diary-list .d-date { display: block; font-size: var(--step-small); color: var(--muted); margin-top: 4px; }
.diary-list .d-exc { display: block; font-size: 0.9375rem; color: var(--muted); margin-top: 6px; max-width: 52ch; }

.post__body { max-width: 62ch; }
.post__body p { margin-bottom: 20px; line-height: 1.6; }
.post__body h2 { font-size: 1.5rem; font-weight: 700; margin: 48px 0 16px; letter-spacing: -0.01em; }
.post__body ul { margin: 0 0 20px 20px; }
.post__body li { margin-bottom: 8px; line-height: 1.6; }
.post__body a { color: var(--ink); }
.post__date { font-size: var(--step-small); color: var(--muted); margin-bottom: 32px; }

.yt {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  margin: 32px 0;
}
.yt iframe { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; }

/* ---- teléfono ---- */

@media (max-width: 768px) {
  .nav { gap: 18px; }
  .nav a { font-size: 0.875rem; }

  .hero { padding-top: 80px; }

  .hero__cd { text-align: right; }
  .cd { flex-wrap: wrap; gap: 18px 24px; justify-content: flex-end; }
  .cd__sep { display: none; }
  .cd__u { flex-basis: 44%; }
  .cd__n { font-size: clamp(3rem, 18vw, 7rem); }

  .intro { padding: 140px var(--mx) 160px; }
  .intro__col { margin-left: 0; width: 78%; }

  .retos__grid { grid-template-columns: 1fr; max-width: 640px; margin-inline: auto; }
  .reto__img { width: 88px; height: 88px; }
  .reto__line { flex-wrap: wrap; }
  .reto__nivel { flex-basis: 100%; white-space: normal; }
  .reto__desc, .reto__temas { max-width: none; }
  .cat { font-size: clamp(1.6rem, 8vw, 2.5rem); }

  .about__row { flex-direction: column; gap: 40px; margin-bottom: 80px; }
  .about__facts { width: 100%; flex-direction: row; flex-wrap: wrap; gap: 24px 40px; }
  .about__lists { flex-direction: column; gap: 40px; }
  .record { width: 100%; }

  .cta { min-height: 80svh; }
  .cta__row { flex-direction: column; align-items: stretch; }
  .cta__p { margin-bottom: 8px; }
  .btn--accent { text-align: center; margin-top: 24px; }

  .footer { min-height: auto; }
  .footer__cols { grid-template-columns: 1fr 1fr; row-gap: 40px; }
  .footer__word { margin-top: 20svh; }
}