/* styles.css — Ing. Estructural | Valerio
   Un solo plano azul de borde a borde con tinta blanca; los precios cierran en una hoja blanca. */

:root {
  --blue: #0b3d9f;
  --blue-deep: #082c78;
  --blue-step: #114aba;
  --ink: #ffffff;
  --ink-soft: #dce8ff;

  --paper: #f7f9fd;
  --paper-step: #e6edf9;
  --paper-ink: #0a2a6e;
  --paper-soft: #33497c;

  --wpp: #25d366;
  --wpp-hover: #3be377;
  --wpp-ink: #05240f;
  --danger: #ff4d5e;

  --font-display: 'Unbounded', system-ui, sans-serif;
  --font-text: 'Onest', system-ui, sans-serif;

  --margin: clamp(1.25rem, 4vw, 3.5rem);
  --bar-h: 4.25rem;
  --ease-out: cubic-bezier(0.23, 1, 0.32, 1);
}

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

html {
  -webkit-text-size-adjust: 100%;
  background: var(--blue);
  color: var(--ink);
  color-scheme: dark;
}

body {
  margin: 0;
  font-family: var(--font-text);
  font-size: clamp(1rem, 0.96rem + 0.2vw, 1.125rem);
  line-height: 1.55;
  color: var(--ink);
  background: var(--blue);
  overflow-x: clip;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, p, ul, figure {
  margin: 0;
}

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

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

.paper a:focus-visible {
  outline-color: var(--paper-ink);
}

/* ---------- Plano 3D ---------- */
.stage {
  position: fixed;
  inset: 0;
  z-index: 1;
  background: var(--blue);
}

.stage.is-away {
  visibility: hidden;
}

#webgl-canvas {
  -webkit-user-select: none;
  user-select: none;
  width: 100%;
  height: 100%;
  display: block;
  cursor: grab;
  touch-action: pan-y;
}

#webgl-canvas:active {
  cursor: grabbing;
}

.viewer-controls {
  position: absolute;
  bottom: 1.5rem;
  left: 50%;
  display: flex;
  gap: 2px;
  transform: translateX(-50%);
}

.viewer-controls.is-hidden {
  visibility: hidden;
}

.viewer-btn {
  background: var(--blue-deep);
  color: var(--ink);
  border: 0;
  font: inherit;
  font-size: 0.9rem;
  font-weight: 600;
  padding: 0.68rem 1.05rem;
  cursor: pointer;
  white-space: nowrap;
  transition: background-color 160ms ease, color 160ms ease, transform 140ms var(--ease-out);
}

.viewer-btn:active {
  transform: scale(0.97);
}

.viewer-btn.is-active {
  background: var(--ink);
  color: var(--blue-deep);
}

/* ---------- Barra ---------- */
.bar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 30;
  height: var(--bar-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  padding: 0 var(--margin);
  background: var(--blue);
}

.brand {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1rem;
  letter-spacing: -0.02em;
  color: var(--ink);
  text-decoration: none;
  white-space: nowrap;
}

.bar-nav {
  display: flex;
  align-items: center;
  gap: clamp(1rem, 2.2vw, 2rem);
}

.bar-link {
  position: relative;
  color: var(--ink-soft);
  font-size: 1rem;
  font-weight: 500;
  text-decoration: none;
  padding: 0.5rem 0;
  white-space: nowrap;
  transition: color 160ms ease;
}

.bar-link::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0.15rem;
  height: 3px;
  background: var(--ink);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 200ms var(--ease-out);
}

.bar-link.is-active {
  color: var(--ink);
  font-weight: 600;
}

.bar-link.is-active::after {
  transform: scaleX(1);
}

@media (hover: hover) and (pointer: fine) {
  .bar-link:hover {
    color: var(--ink);
  }
  .viewer-btn:not(.is-active):hover {
    background: var(--blue-step);
  }
}

/* ---------- WhatsApp ---------- */
.wpp-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  font-weight: 700;
  text-decoration: none;
  background: var(--wpp);
  color: var(--wpp-ink);
  white-space: nowrap;
  transition: transform 150ms var(--ease-out), background-color 160ms ease;
}

.wpp-btn:active {
  transform: scale(0.97);
}

.wpp-icon {
  width: 1.35rem;
  height: 1.35rem;
  flex-shrink: 0;
}

.wpp-btn-bar {
  padding: 0.6rem 1.05rem;
  font-size: 1rem;
}

.wpp-btn-main {
  padding: 1rem 1.6rem;
  font-size: 1rem;
}

.wpp-btn-ink {
  padding: 0.95rem 1.3rem;
  font-size: 1rem;
  background: var(--paper-ink);
  color: var(--ink);
}

.wpp-fab {
  display: none;
}

@media (hover: hover) and (pointer: fine) {
  .wpp-btn:not(.wpp-btn-ink):hover {
    background: var(--wpp-hover);
  }
  .wpp-btn-ink:hover {
    background: var(--blue);
  }
}

/* ---------- Capítulos ---------- */
.story {
  position: relative;
  z-index: 10;
  pointer-events: none; /* El plano se puede arrastrar en cualquier zona libre */
}

.note,
.paper {
  pointer-events: auto;
}

/* Cada capítulo retiene su texto mientras el plano avanza; el siguiente entra por debajo */
.chapter {
  --hold: 210vh;
  height: calc(100vh + var(--hold));
  margin-top: -100vh;
  padding: 0 var(--margin);
  display: flex;
  align-items: flex-start;
}

.chapter:first-child {
  margin-top: 0;
  --hold: 80vh;
}

#sismo {
  --hold: 230vh;
}

#quien {
  --hold: 110vh;
}

.chapter-left {
  justify-content: flex-start;
}

.chapter-right {
  justify-content: flex-end;
}

.chapter-center {
  justify-content: center;
}

.pin {
  position: sticky;
  top: 0;
  height: 100vh; /* taste-skill-ignore: solo escritorio; en móvil .pin es estático */
  width: 50vw;
  padding: var(--bar-h) 0 0;
  display: flex;
  align-items: center;
}

.note {
  display: flex;
  flex-direction: column;
  gap: 1.35rem;
  width: 100%;
  will-change: opacity, transform;
}

.note.is-off,
.note.is-off * {
  pointer-events: none;
}

/* Primera pantalla: el titular ocupa todo el ancho y abajo a la izquierda, lo que hay que hacer */
.pin:has(.note-hero) {
  width: 100%;
  align-items: flex-start;
  padding-top: calc(var(--bar-h) + 1vh);
}

.note-hero {
  pointer-events: none;
}

.note-hero .display-title {
  pointer-events: auto;
}

.hero-act {
  width: 42vw;
  display: flex;
  flex-direction: column;
  gap: 1.35rem;
  pointer-events: auto;
}

.chapter-center .pin {
  width: 30vw;
}

.chapter-center .note {
  align-items: flex-start;
}

#quien .pin {
  width: 62vw;
}

.display-title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: min(9.6vw, 21vh);
  line-height: 0.98;
  letter-spacing: -0.045em;
  text-wrap: balance;
}

.section-title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: min(4vw, 8.4vh);
  line-height: 1.04;
  letter-spacing: -0.03em;
  text-wrap: balance;
}

.lead-copy,
.body-copy {
  color: var(--ink);
  font-size: clamp(1.0625rem, 1.45vw, 1.4rem);
  line-height: 1.5;
}

.lead-copy strong,
.body-copy strong {
  font-weight: 700;
}

.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
}

.trust-checks {
  list-style: none;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
}

.trust-checks li {
  position: relative;
  padding-left: 1.7rem;
  font-size: 1rem;
  color: var(--ink-soft);
}

.trust-checks li::before {
  content: "";
  position: absolute;
  left: 0.15rem;
  top: 0.32em;
  width: 0.72rem;
  height: 0.42rem;
  border-left: 2.5px solid var(--ink);
  border-bottom: 2.5px solid var(--ink);
  transform: rotate(-45deg);
}

.engineer-line {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  font-size: 1rem;
  color: var(--ink-soft);
}

.engineer-line img {
  width: 56px;
  height: 56px;
  object-fit: cover;
  object-position: 40% 15%;
  flex-shrink: 0;
}

.engineer-line strong {
  color: var(--ink);
}

/* Un beneficio a la vez, grande, unido con una línea a la parte del modelo de la que habla */
.steps {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.steps h3 {
  font-size: clamp(1.25rem, 2vw, 1.9rem);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 0.35rem;
}

.steps p {
  font-size: clamp(1.0625rem, 1.45vw, 1.4rem);
  line-height: 1.5;
}

/* La cifra crece con la obra */
.floor-figure {
  display: none;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: min(4vw, 8.4vh);
  line-height: 1;
  letter-spacing: -0.05em;
}

.floor-figure span {
  font-size: min(15vw, 30vh);
  line-height: 0.85;
}

/* Sismo: texto al centro, un edificio a cada lado */
.quake-status {
  min-height: 7.5em;
  font-size: clamp(1.0625rem, 1.45vw, 1.4rem);
  font-weight: 700;
  line-height: 1.5;
}

.fine-print {
  font-size: 0.9rem;
  color: var(--ink-soft);
}

.who {
  display: grid;
  grid-template-columns: 1fr 1.25fr;
  gap: clamp(1.25rem, 2.2vw, 2.5rem);
  align-items: start;
}

.who-text {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.engineer-photos {
  display: grid;
  gap: 0.5rem;
}

.engineer-photos img {
  width: 100%;
  object-fit: cover;
}

.engineer-photos img:first-child {
  aspect-ratio: 1 / 1;
  object-position: 40% 12%;
}

.engineer-photos img:last-child {
  aspect-ratio: 16 / 9;
  object-position: 50% 30%;
}

/* ---------- La hoja blanca ---------- */
.paper {
  position: relative;
  z-index: 20;
  background: var(--paper);
  color: var(--paper-ink);
  color-scheme: light;
}

.paper-inner {
  max-width: 1440px;
  margin: 0 auto;
  padding: clamp(5rem, 9vw, 8rem) var(--margin) 2.5rem;
}

.paper-title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.7rem, 4vw, 4.6rem);
  line-height: 1.05;
  letter-spacing: -0.03em;
  text-wrap: balance;
}

.evidence {
  display: grid;
  grid-template-columns: 1.45fr 1fr;
  gap: clamp(1.5rem, 3.5vw, 3.5rem);
  align-items: start;
}

.evidence-main img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.evidence-text {
  display: flex;
  flex-direction: column;
  gap: 1.35rem;
}

.evidence .paper-title {
  font-size: clamp(1.7rem, 3vw, 3.4rem);
}

.evidence-text > p {
  font-size: clamp(1rem, 1.25vw, 1.2rem);
  line-height: 1.5;
}

.evidence-side img {
  width: 100%;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

.paper-title-plans {
  margin-top: clamp(4.5rem, 9vw, 8rem);
  margin-bottom: clamp(1.75rem, 3vw, 2.75rem);
}

.plans {
  display: grid;
  grid-template-columns: 1.25fr 1fr 1fr;
  gap: clamp(0.75rem, 1.2vw, 1.25rem);
  align-items: stretch;
}

.plan {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  padding: clamp(1.4rem, 2.4vw, 2.25rem);
  background: var(--paper-step);
}

.plan h3 {
  font-size: clamp(1rem, 1.3vw, 1.2rem);
  line-height: 1.25;
  font-weight: 700;
}

.plan-quote {
  font-size: 1rem;
  font-weight: 700;
}

.plan-desc {
  font-size: 1rem;
  color: var(--paper-soft);
}

.plan-list {
  list-style: none;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin-bottom: 0.5rem;
  font-size: 1rem;
}

.plan-list li {
  position: relative;
  padding-left: 1.5rem;
}

.plan-list li::before {
  content: "";
  position: absolute;
  left: 0.1rem;
  top: 0.32em;
  width: 0.68rem;
  height: 0.38rem;
  border-left: 2.5px solid currentColor;
  border-bottom: 2.5px solid currentColor;
  transform: rotate(-45deg);
}

.plan .wpp-btn {
  margin-top: auto;
  white-space: normal;
  text-align: center;
}

.plan-main {
  background: var(--blue);
  color: var(--ink);
}

.plan-main .plan-desc {
  color: var(--ink-soft);
}

.plan-main h3 {
  font-size: clamp(1.25rem, 2vw, 1.9rem);
}

.plan-price {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(3rem, 6vw, 5.5rem);
  line-height: 1;
  letter-spacing: -0.04em;
}

.closing {
  margin-top: clamp(4.5rem, 9vw, 8rem);
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.closing-name {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(2.6rem, 11.4vw, 11.5rem);
  line-height: 0.95;
  letter-spacing: -0.05em;
  white-space: nowrap;
}

.closing-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 2rem;
}

.closing-links a {
  color: var(--paper-ink);
  font-weight: 700;
}

.closing-credits {
  font-size: 0.9rem;
  color: var(--paper-soft);
  max-width: 70ch;
}

/* Entrada escalonada al aparecer; en escritorio los capítulos la llevan atada al scroll */
.js-story .reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 520ms var(--ease-out), transform 520ms var(--ease-out);
  transition-delay: calc(var(--i, 0) * 70ms);
}

.js-story .reveal.is-in {
  opacity: 1;
  transform: none;
}

@media (min-width: 961px) {
  .js-story .steps {
    display: grid;
  }
  .js-story .steps > div {
    grid-area: 1 / 1;
    opacity: 0;
    visibility: hidden;
    transform: translateY(14px);
    transition: opacity 240ms ease, transform 320ms var(--ease-out), visibility 240ms;
  }
  .js-story .steps > div.is-active {
    opacity: 1;
    visibility: visible;
    transform: none;
  }
  .floor-figure {
    display: block;
  }
}

/* ---------- Pantallas bajas de escritorio ---------- */
@media (min-width: 961px) and (max-height: 780px) {
  .note {
    gap: 0.95rem;
  }
  .lead-copy,
  .body-copy,
  .quake-status,
  .steps p,
  .trust-checks li {
    font-size: 1rem;
  }
  .who {
    grid-template-columns: 0.8fr 1.3fr;
  }
}

/* ---------- Teléfono y tablet: las mismas escenas de escritorio, en vertical ----------
   Título arriba, modelo al centro y una sola idea abajo; el modelo ocupa el hueco que deja el texto */
@media (max-width: 960px) {
  :root {
    --bar-h: 3.5rem;
    --fab-h: 3.5rem;
  }

  .bar-nav,
  .wpp-btn-bar {
    display: none;
  }

  .bar {
    z-index: 45;
  }

  .stage {
    inset: 0 0 auto 0;
    height: 100vh; /* taste-skill-ignore: respaldo de 100svh */
    height: 100svh;
  }

  .viewer-controls {
    left: var(--margin);
    bottom: auto;
    transform: none;
  }

  .viewer-btn {
    min-height: 2.75rem;
    padding: 0.6rem 0.85rem;
  }

  .chapter {
    --hold: 240svh;
    height: calc(100svh + var(--hold));
    margin-top: -100svh;
    display: block;
  }

  .chapter:first-child {
    --hold: 80svh;
  }

  #sismo {
    --hold: 230svh;
  }

  .pin,
  .pin:has(.note-hero),
  .chapter-center .pin {
    height: 100svh;
    width: 100%;
    padding: calc(var(--bar-h) + 0.5rem) 0 calc(var(--fab-h) + 0.9rem);
    display: block;
  }

  .chapter:not(.chapter-last) .note {
    position: relative;
    display: grid;
    grid-template-rows: auto minmax(0, 1fr) auto auto auto;
    gap: 0;
    height: 100%;
    pointer-events: none;
  }

  .chapter:not(.chapter-last) .note > * {
    grid-column: 1;
    pointer-events: auto;
  }

  .chapter:not(.chapter-last) .note > .display-title,
  .chapter:not(.chapter-last) .note > .section-title {
    grid-row: 1;
  }

  .note > .body-copy,
  .note > .steps,
  .note > .hero-act {
    grid-row: 3;
  }

  /* Abajo ya está WhatsApp siempre a la vista: un segundo botón verde solo restaría sitio al modelo */
  .chapter:not(.chapter-last) .cta-row {
    display: none;
  }

  .display-title {
    font-size: clamp(2rem, 9.8vw, 4.6rem);
    letter-spacing: -0.05em;
  }

  .section-title {
    font-size: clamp(1.75rem, 7.9vw, 3.2rem);
  }

  .hero-act {
    width: 100%;
    gap: 0.9rem;
  }

  .lead-copy,
  .body-copy,
  .steps p {
    font-size: clamp(1rem, 2.6vw, 1.3rem);
    line-height: 1.45;
  }

  .steps h3 {
    font-size: clamp(1.3rem, 3.4vw, 1.7rem);
  }

  /* Solo un beneficio a la vez, en el mismo sitio donde estaba el texto anterior */
  .js-story .steps {
    display: grid;
    align-items: end;
  }

  .js-story .steps > div {
    grid-area: 1 / 1;
    opacity: 0;
    visibility: hidden;
    transform: translateY(14px);
    transition: opacity 240ms ease, transform 320ms var(--ease-out), visibility 240ms;
  }

  .js-story .steps > div.is-active {
    opacity: 1;
    visibility: visible;
    transform: none;
  }

  .js-story .note > .body-copy {
    align-self: end;
  }

  /* La cifra de pisos flota sobre el plano, a la izquierda del modelo */
  .js-story .floor-figure {
    display: block;
    position: absolute;
    left: 0;
    top: var(--figure-top, 6rem);
    grid-row: auto;
    font-size: clamp(1.25rem, 5vw, 2rem);
  }

  .floor-figure span {
    font-size: 2.6em;
  }

  /* Sismo: el relato del temblor manda; el texto inicial se apaga para dejarle el foco */
  .note > .quake-run {
    grid-row: 4;
    min-height: 0;
  }

  .quake-status {
    min-height: 4.4em;
    margin-top: 0.5rem;
    font-size: clamp(1.0625rem, 2.8vw, 1.35rem);
    line-height: 1.35;
  }

  .note > .fine-print {
    grid-row: 5;
  }

  /* Quién soy no es una escena: llega como una hoja azul que cubre el modelo */
  .chapter-last {
    --hold: 0px;
    position: relative;
    height: auto;
    margin-top: 0;
    padding: 3rem var(--margin) 5rem;
    background: var(--blue);
    scroll-margin-top: var(--bar-h);
  }

  #quien .pin {
    position: static;
    height: auto;
    width: 100%;
    max-width: 640px;
    padding: 0;
  }

  .who {
    grid-template-columns: 1fr;
  }

  .engineer-photos {
    grid-template-columns: 1.15fr 1fr;
    align-items: end;
    gap: 0.4rem;
  }

  .engineer-photos img:last-child {
    aspect-ratio: 1 / 0.86;
  }

  .wpp-btn-main {
    width: 100%;
    white-space: normal;
  }

  .evidence,
  .plans {
    grid-template-columns: 1fr;
  }

  .paper {
    position: relative;
    scroll-margin-top: var(--bar-h);
  }

  .paper-inner {
    padding-top: 4rem;
  }

  .plan {
    padding: 1.5rem 1.25rem;
  }

  /* En teléfono la inspección manda; las otras dos opciones van sobre la hoja, sin caja */
  .plan:not(.plan-main) {
    background: none;
    padding-inline: 0;
  }

  .plans {
    gap: 1.5rem;
  }

  /* WhatsApp siempre a mano, como barra inferior que no tapa ningún texto */
  body {
    padding-bottom: var(--fab-h);
  }

  .wpp-fab {
    position: fixed;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 40;
    height: var(--fab-h);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.6rem;
    background: var(--wpp);
    color: var(--wpp-ink);
    font-weight: 700;
    text-decoration: none;
  }
}

/* Teléfono en horizontal: la misma escena, con el plano a la izquierda y el texto a la derecha */
@media (max-width: 960px) and (orientation: landscape) {
  .stage {
    inset: var(--bar-h) auto var(--fab-h) 0;
    width: 46vw;
    height: auto;
  }

  .pin,
  .pin:has(.note-hero),
  .chapter-center .pin {
    padding-left: calc(46vw + 1rem);
    padding-right: var(--margin);
    padding-bottom: calc(var(--fab-h) + 0.5rem);
  }

  .chapter {
    padding: 0;
  }

  .display-title {
    font-size: 5vw;
  }

  .section-title {
    font-size: 3.4vw;
  }

  .lead-copy,
  .body-copy,
  .steps p {
    font-size: 1rem;
    line-height: 1.35;
  }

  .steps h3 {
    font-size: 1.125rem;
  }

  .js-story .floor-figure {
    display: none;
  }

  .engineer-line {
    display: none;
  }

  .chapter-last {
    padding: 2rem var(--margin) 3rem;
  }

  #quien .pin {
    padding: 0;
    max-width: none;
  }
}

.is-measuring .note,
.is-measuring .note * {
  transform: none !important;
  transition: none !important;
}

/* ---------- Movimiento reducido ---------- */
@media (prefers-reduced-motion: reduce) {
  .wpp-btn,
  .viewer-btn,
  .stage,
  .js-story .steps > div {
    transition: none;
  }
  .js-story .reveal {
    transform: none;
    transition: opacity 200ms ease;
    transition-delay: 0ms;
  }
}