/* =========================================================
   Altara Ingeniería S.A.S — hoja de estilos
   Paleta tomada del portafolio: asfalto de las fichas de obra,
   concreto de las fichas de equipo y amarillo de maquinaria.
   ========================================================= */

:root {
  --asfalto: #1C1F26;      /* fondo exacto de las fotos de proyectos */
  --asfalto-2: #252932;
  --tinta: #111318;
  --concreto: #EDF1F2;     /* fondo exacto de las fotos de equipos */
  --papel: #F7F9F9;
  --hormigon: #5E6570;     /* texto secundario sobre claro */
  --niebla: #A7ADB6;       /* texto secundario sobre oscuro */
  --linea: #D4DADD;
  --linea-oscura: #343945;
  --amarillo: #F2B21B;
  --amarillo-hondo: #D99A08;
  --rojo: #D7262B;

  --f-display: "Barlow Condensed", "Arial Narrow", "Roboto Condensed", sans-serif;
  --f-body: "Barlow", "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --f-mono: "IBM Plex Mono", ui-monospace, "Cascadia Mono", Consolas, monospace;

  /* escala tipográfica 1.25 */
  --t-xs: .78rem;
  --t-sm: .9rem;
  --t-md: 1.0625rem;
  --t-lg: 1.3rem;
  --t-xl: 1.75rem;
  --t-2xl: clamp(2rem, 3.6vw, 2.9rem);
  --t-hero: clamp(3.2rem, 7.4vw, 6.4rem);

  --gutter: clamp(16px, 4vw, 48px);
  --max: 1240px;
  --radius: 3px;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 84px; }
body {
  margin: 0;
  background: var(--papel);
  color: var(--tinta);
  font-family: var(--f-body);
  font-size: var(--t-md);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; }
h1, h2, h3 { font-family: var(--f-display); line-height: 1.02; margin: 0; text-wrap: balance; }
h2 { font-size: var(--t-2xl); font-weight: 700; text-transform: uppercase; letter-spacing: .005em; }
h3 { font-size: var(--t-xl); font-weight: 700; text-transform: uppercase; }
p { margin: 0; }
:focus-visible { outline: 3px solid var(--amarillo); outline-offset: 3px; }

.sr, .skip:not(:focus) {
  position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap;
}
.skip:focus { position: fixed; top: 8px; left: 8px; z-index: 100; background: var(--amarillo); padding: 8px 14px; }

.wrap { max-width: var(--max); margin-inline: auto; padding-inline: var(--gutter); }

.eyebrow {
  font-family: var(--f-mono);
  font-size: var(--t-xs);
  font-weight: 500;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--hormigon);
  display: flex; align-items: center; gap: 10px;
}
.eyebrow::before { content: ""; width: 22px; height: 3px; background: var(--amarillo); flex: none; }
.eyebrow.on-dark { color: var(--niebla); }
.hl { color: var(--amarillo); }

/* ---------- cinta de obra ---------- */
.tape {
  height: 10px;
  background: repeating-linear-gradient(-45deg, var(--amarillo) 0 14px, var(--tinta) 14px 28px);
  background-size: 39.6px 10px;
  animation: crawl 3s linear infinite;
}
@keyframes crawl { to { background-position: 39.6px 0; } }

/* ---------- botones ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  font-family: var(--f-display); font-weight: 700; font-size: 1.12rem;
  text-transform: uppercase; letter-spacing: .04em; text-decoration: none;
  background: var(--amarillo); color: var(--tinta);
  border: 2px solid var(--amarillo); border-radius: var(--radius);
  padding: 12px 22px; cursor: pointer;
  transition: background-color .15s, border-color .15s, transform .15s;
}
.btn:hover { background: var(--amarillo-hondo); border-color: var(--amarillo-hondo); }
.btn:active { transform: translateY(1px); }
.btn-ghost { background: transparent; border-color: var(--tinta); }
.btn-ghost:hover { background: var(--tinta); border-color: var(--tinta); color: var(--papel); }
.btn-sm { padding: 7px 14px; font-size: 1rem; }
.btn-block { width: 100%; }

/* ---------- encabezado ---------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: var(--papel);
  border-bottom: 1px solid var(--linea);
}
.site-header .tape { height: 6px; }
.header-row { display: flex; align-items: center; justify-content: space-between; gap: 24px; min-height: 68px; }

.brand { display: flex; align-items: center; padding-block: 8px; }
.brand-logo { height: 52px; width: auto; }

.nav { display: flex; align-items: center; gap: 28px; }
.nav a:not(.btn) {
  font-family: var(--f-display); font-weight: 600; font-size: 1.08rem;
  text-transform: uppercase; letter-spacing: .05em; text-decoration: none;
  padding-block: 6px; border-bottom: 3px solid transparent;
}
.nav a:not(.btn):hover, .nav a.is-active { border-bottom-color: var(--amarillo); }

.nav-toggle { display: none; background: none; border: 0; padding: 10px; cursor: pointer; }
.bars, .bars::before, .bars::after { display: block; width: 26px; height: 3px; background: var(--tinta); position: relative; transition: transform .2s; }
.bars::before, .bars::after { content: ""; position: absolute; left: 0; }
.bars::before { top: -8px; } .bars::after { top: 8px; }
.nav-toggle[aria-expanded="true"] .bars { background: transparent; }
.nav-toggle[aria-expanded="true"] .bars::before { transform: translateY(8px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .bars::after { transform: translateY(-8px) rotate(-45deg); }

/* ---------- hero ---------- */
.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr);
  background: var(--concreto);
  max-width: 1600px; margin-inline: auto;
}
.hero-copy {
  display: flex; flex-direction: column; justify-content: center; gap: 26px;
  padding-block: clamp(48px, 7vw, 104px);
  padding-left: max(var(--gutter), calc((100vw - var(--max)) / 2 + var(--gutter)));
  padding-right: clamp(24px, 4vw, 64px);
}
.hero-title {
  font-size: var(--t-hero); font-weight: 800; text-transform: uppercase;
  line-height: .9; letter-spacing: -.005em;
  display: grid;
}
.hero-title span { display: block; }
.hero-title span:nth-child(2) { padding-left: .5em; }
.hero-title span:nth-child(3) { padding-left: 1em; }
.lede { font-size: var(--t-lg); line-height: 1.5; max-width: 34rem; color: #2B3038; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; }
.hero-media {
  margin: 0; position: relative; min-height: 420px;
  clip-path: polygon(14% 0, 100% 0, 100% 100%, 0 100%);
  background: var(--asfalto);
}
.hero-media img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; object-position: 40% 60%; }

@media (prefers-reduced-motion: no-preference) {
  .hero-title span { animation: rise .7s cubic-bezier(.2,.7,.2,1) both; }
  .hero-title span:nth-child(2) { animation-delay: .12s; }
  .hero-title span:nth-child(3) { animation-delay: .24s; }
  @keyframes rise { from { transform: translateY(.18em); } to { transform: none; } }
}
@media (prefers-reduced-motion: reduce) {
  .tape { animation: none; }
  html { scroll-behavior: auto; }
}

/* ---------- libro de cifras ---------- */
.ledger { background: var(--asfalto); color: var(--papel); }
.ledger-row { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); }
.ledger-item {
  display: grid; gap: 4px; padding: 26px 20px;
  border-left: 1px solid var(--linea-oscura);
}
.ledger-item:first-child { border-left: 0; padding-left: 0; }
.ledger-num {
  font-family: var(--f-display); font-weight: 700; font-size: clamp(2rem, 3.4vw, 2.8rem);
  line-height: 1; color: var(--amarillo); font-variant-numeric: tabular-nums;
}
.ledger-num small { font-size: .5em; margin-left: 4px; color: var(--papel); font-weight: 600; }
.ledger-label { font-family: var(--f-mono); font-size: var(--t-xs); letter-spacing: .08em; text-transform: uppercase; color: var(--niebla); }

/* ---------- secciones ---------- */
.section { padding-block: clamp(64px, 9vw, 120px); position: relative; }
.section.tight-top { padding-top: 0; }
.concrete { background: var(--concreto); }
.paper { background: var(--papel); }
.asphalt { background: var(--asfalto); color: var(--papel); }
.tape-edge { position: absolute; top: 0; left: 0; right: 0; }

.section-head { display: grid; gap: 16px; margin-bottom: clamp(36px, 5vw, 60px); max-width: 46rem; }
.section-head.row-head {
  max-width: none; grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr);
  align-items: end; column-gap: clamp(24px, 6vw, 96px);
}
.section-head.row-head > div { display: grid; gap: 16px; }
.section-lede { color: var(--hormigon); font-size: var(--t-md); max-width: 36rem; }
.asphalt .section-lede { color: var(--niebla); }

/* líneas de negocio */
.lines { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); border-top: 3px solid var(--tinta); }
.line {
  display: grid; align-content: start; gap: 10px;
  padding: 26px 28px 30px 0; text-decoration: none;
  border-right: 1px solid var(--linea);
  transition: background-color .15s;
}
.line + .line { padding-left: 28px; }
.line:last-child { border-right: 0; }
.line-kicker { font-family: var(--f-mono); font-size: var(--t-xs); color: var(--hormigon); letter-spacing: .1em; text-transform: uppercase; }
.line-title { font-family: var(--f-display); font-weight: 700; font-size: var(--t-xl); line-height: 1.05; text-transform: uppercase; }
.line-desc { color: var(--hormigon); }
.line-title::after { content: " →"; color: var(--amarillo-hondo); transition: margin-left .15s; }
.line:hover .line-title::after { margin-left: 6px; }

/* bloque dividido */
.split { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: clamp(32px, 6vw, 88px); align-items: center; }
.split-media { margin: 0; }
.split-copy { display: grid; gap: 20px; align-content: start; }
.split-copy > p:not(.eyebrow):not(.stamp) { color: var(--hormigon); }
.stamp {
  justify-self: start;
  font-family: var(--f-display); font-weight: 700; font-size: 1.05rem; letter-spacing: .06em; text-transform: uppercase;
  border: 2px solid var(--tinta); padding: 4px 12px; transform: rotate(-1.5deg);
}
.scope { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0 28px; }
.scope li { display: grid; gap: 2px; padding: 14px 0; border-top: 1px solid var(--linea); }
.scope strong { font-family: var(--f-display); font-size: 1.15rem; text-transform: uppercase; letter-spacing: .02em; }
.scope span { color: var(--hormigon); font-size: var(--t-sm); line-height: 1.45; }

/* fichas técnicas */
.sheets { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 24px; }
.sheet { background: #fff; border: 1px solid var(--linea); display: grid; grid-template-rows: auto 1fr; }
.sheet-media { background: var(--concreto); aspect-ratio: 16 / 11; display: grid; place-items: center; overflow: hidden; }
.sheet-media img { width: 100%; height: 100%; object-fit: cover; }
.sheet-body { padding: 22px 22px 24px; display: grid; gap: 12px; align-content: start; }
.sheet-type { font-family: var(--f-mono); font-size: var(--t-xs); letter-spacing: .12em; text-transform: uppercase; color: var(--amarillo-hondo); font-weight: 500; }

.specs { margin: 4px 0 0; display: grid; }
.specs > div {
  display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 12px; align-items: baseline;
  padding: 9px 0; border-top: 1px dashed var(--linea);
}
.specs dt { font-size: var(--t-sm); color: var(--hormigon); }
.specs dd { margin: 0; font-family: var(--f-mono); font-size: var(--t-sm); font-weight: 500; text-align: right; font-variant-numeric: tabular-nums; }

.feature-pair { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 24px; margin-top: 24px; }
.feature { background: var(--asfalto); color: var(--papel); display: grid; grid-template-rows: auto 1fr; }
.feature-media { background: #fff; aspect-ratio: 16 / 9; display: grid; place-items: center; padding: 20px; }
.feature-media img { max-height: 100%; width: auto; object-fit: contain; }
.feature-body { padding: 26px 28px 30px; display: grid; gap: 12px; align-content: start; }
.feature-body > p:not(.sheet-type) { color: var(--niebla); }
.feature .sheet-type { color: var(--amarillo); }
.feature .specs > div { border-top-color: var(--linea-oscura); }
.feature .specs dt { color: var(--niebla); }
.specs-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); column-gap: 28px; }
.ticks { list-style: none; margin: 4px 0 0; padding: 0; display: grid; }
.ticks li { padding: 9px 0 9px 28px; border-top: 1px dashed var(--linea-oscura); position: relative; }
.ticks li::before {
  content: ""; position: absolute; left: 2px; top: 1.05em; width: 12px; height: 7px;
  border-left: 3px solid var(--amarillo); border-bottom: 3px solid var(--amarillo); transform: rotate(-45deg);
}

/* alquiler */
.rentals { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 0; border-top: 3px solid var(--tinta); }
.rental { display: grid; gap: 8px; align-content: start; padding: 24px 22px 8px; border-right: 1px solid var(--linea); }
.rental:first-child { padding-left: 0; }
.rental:last-child { border-right: 0; padding-right: 0; }
.rental img { aspect-ratio: 3 / 2; width: 100%; object-fit: contain; margin-bottom: 8px; mix-blend-mode: multiply; }
.rental p { color: var(--hormigon); font-size: var(--t-sm); }
.rental .makes { font-family: var(--f-mono); font-size: var(--t-xs); color: var(--tinta); letter-spacing: .04em; margin-top: 4px; }

/* proyectos */
.projects { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: clamp(40px, 5vw, 64px) clamp(24px, 4vw, 56px); }
.project { display: grid; grid-template-rows: auto 1fr; }
.project img { width: 100%; aspect-ratio: 4 / 3; object-fit: contain; }
.project-body { display: grid; gap: 8px; align-content: start; border-top: 3px solid var(--amarillo); padding-top: 18px; }
.place { font-family: var(--f-mono); font-size: var(--t-xs); letter-spacing: .12em; text-transform: uppercase; color: var(--amarillo); }
.volume {
  font-family: var(--f-display); font-weight: 700; font-size: clamp(2.2rem, 4vw, 3.2rem); line-height: 1;
  color: var(--amarillo); font-variant-numeric: tabular-nums; margin-block: 6px 4px;
}
.volume span { font-size: 1.05rem; font-weight: 600; color: var(--papel); text-transform: uppercase; letter-spacing: .04em; margin-left: 4px; }
.log { margin: 0; display: grid; }
.log > div { display: grid; grid-template-columns: 6.5rem minmax(0, 1fr); gap: 12px; padding: 10px 0; border-top: 1px solid var(--linea-oscura); }
.log dt { font-family: var(--f-mono); font-size: var(--t-xs); letter-spacing: .1em; text-transform: uppercase; color: var(--niebla); padding-top: 3px; }
.log dd { margin: 0; font-size: var(--t-sm); line-height: 1.5; }

.done {
  margin-top: clamp(64px, 8vw, 104px); padding-top: clamp(40px, 5vw, 56px);
  border-top: 1px solid var(--linea-oscura);
  display: grid; grid-template-columns: minmax(0, .8fr) minmax(0, 1fr) minmax(0, 1fr); gap: clamp(24px, 4vw, 48px); align-items: end;
}
.done-head { display: grid; gap: 14px; align-self: start; }
.done-head > p:not(.eyebrow) { color: var(--niebla); }
.done-item { display: grid; gap: 6px; }
.done-item img { aspect-ratio: 16 / 10; width: 100%; object-fit: contain; margin-bottom: 10px; }
.done-item .volume { font-size: clamp(1.9rem, 3vw, 2.5rem); margin: 0; }

/* cobertura */
.split-map { align-items: stretch; }
.map { background: #1D2027; display: grid; place-items: center; }
.sites { list-style: none; margin: 8px 0 0; padding: 0; border-top: 3px solid var(--tinta); }
.sites li {
  display: grid; grid-template-columns: 8.5rem minmax(0, 1fr) auto; gap: 12px; align-items: baseline;
  padding: 12px 0; border-bottom: 1px solid var(--linea);
}
.site-dept { font-family: var(--f-mono); font-size: var(--t-xs); letter-spacing: .1em; text-transform: uppercase; color: var(--hormigon); }
.site-city { font-family: var(--f-display); font-weight: 700; font-size: 1.3rem; text-transform: uppercase; }
.site-job { font-size: var(--t-sm); color: var(--hormigon); text-align: right; }
.brands { display: grid; gap: 14px; margin-top: 28px; }
.brand-list { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: 8px; }
.brand-list li {
  font-family: var(--f-display); font-weight: 700; font-size: 1.05rem; text-transform: uppercase; letter-spacing: .05em;
  border: 1.5px solid var(--tinta); padding: 3px 12px; border-radius: var(--radius);
}

/* contacto */
.contact-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.1fr); gap: clamp(36px, 6vw, 88px); align-items: start; }
.contact-copy { display: grid; gap: 20px; }
.contact-copy h2 { font-size: clamp(2.4rem, 5vw, 4rem); }
.contact-copy > p:not(.eyebrow) { color: var(--niebla); max-width: 32rem; }
.contact-list { margin: 8px 0 0; display: grid; }
.contact-list > div { display: grid; gap: 2px; padding: 14px 0; border-top: 1px solid var(--linea-oscura); }
.contact-list dt { font-family: var(--f-mono); font-size: var(--t-xs); letter-spacing: .1em; text-transform: uppercase; color: var(--niebla); }
.contact-list dd { margin: 0; font-family: var(--f-display); font-weight: 600; font-size: 1.5rem; overflow-wrap: anywhere; }
.contact-list a { text-decoration: none; color: var(--amarillo); }
.contact-list a:hover { text-decoration: underline; }

.quote { background: var(--papel); color: var(--tinta); padding: clamp(22px, 3vw, 36px); display: grid; gap: 16px; border-top: 6px solid var(--amarillo); }
.field { display: grid; gap: 6px; }
.field-row { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }
.field label { font-family: var(--f-mono); font-size: var(--t-xs); letter-spacing: .08em; text-transform: uppercase; color: var(--hormigon); }
.field input, .field select, .field textarea {
  font: inherit; font-size: 1rem; color: var(--tinta);
  background: #fff; border: 1.5px solid var(--linea); border-radius: var(--radius);
  padding: 10px 12px; width: 100%;
}
.field textarea { resize: vertical; }
.field input:focus, .field select:focus, .field textarea:focus { outline: none; border-color: var(--tinta); box-shadow: 0 0 0 3px rgba(242, 178, 27, .45); }
.field input[aria-invalid="true"] { border-color: var(--rojo); }
.hp { position: absolute; left: -9999px; }
.form-status { padding: 12px 14px; font-size: var(--t-sm); border-left: 4px solid; }
.form-status.ok { background: #E8F4EA; border-color: #2E8540; }
.form-status.err { background: #FBEAEA; border-color: var(--rojo); }

/* pie */
.site-footer { background: var(--tinta); color: var(--niebla); padding-block: 28px; font-size: var(--t-sm); }
.footer-row { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; gap: 12px 24px; }
.footer-logo { height: 44px; width: auto; }
.footer-motto { font-family: var(--f-display); font-weight: 700; text-transform: uppercase; letter-spacing: .06em; color: var(--amarillo); }

/* WhatsApp */
.wa {
  position: fixed; right: 18px; bottom: 18px; z-index: 40;
  width: 54px; height: 54px; border-radius: 50%;
  display: grid; place-items: center;
  background: #25D366; color: #fff; box-shadow: 0 6px 18px rgba(0, 0, 0, .25);
}
.wa svg { width: 28px; height: 28px; }

/* ---------- responsive ---------- */
@media (max-width: 1080px) {
  .sheets { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .rentals { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .rental { padding: 24px 22px 20px; border-bottom: 1px solid var(--linea); }
  .rental:nth-child(odd) { padding-left: 0; }
  .rental:nth-child(even) { border-right: 0; padding-right: 0; }
  .done { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .done-head { grid-column: 1 / -1; }
}

@media (max-width: 900px) {
  .nav-toggle { display: block; }
  .nav {
    position: absolute; top: 100%; left: 0; right: 0;
    flex-direction: column; align-items: stretch; gap: 0;
    background: var(--papel); border-bottom: 1px solid var(--linea);
    padding: 8px var(--gutter) 20px;
  }
  .nav[data-open="false"] { display: none; }
  .nav a:not(.btn) { padding-block: 12px; border-bottom: 1px solid var(--linea); }
  .nav .btn { margin-top: 14px; }
  .site-header .header-row { position: relative; }

  .hero { grid-template-columns: 1fr; }
  .hero-copy { padding-inline: var(--gutter); }
  .hero-media { clip-path: polygon(0 8%, 100% 0, 100% 100%, 0 100%); min-height: 340px; aspect-ratio: 4 / 3; }
  .ledger-row { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .ledger-item:nth-child(3) { border-left: 0; padding-left: 0; }
  .ledger-item:nth-child(n+3) { border-top: 1px solid var(--linea-oscura); }

  .section-head.row-head, .split, .contact-grid { grid-template-columns: 1fr; }
  .lines { grid-template-columns: 1fr; }
  .line, .line + .line { padding: 22px 0; border-right: 0; border-bottom: 1px solid var(--linea); }
  .feature-pair, .projects { grid-template-columns: 1fr; }
  .map { max-width: 520px; }
}

@media (max-width: 620px) {
  .sheets, .rentals, .done { grid-template-columns: 1fr; }
  .rental, .rental:nth-child(odd), .rental:nth-child(even) { padding: 22px 0; border-right: 0; }
  .scope, .specs-grid, .field-row { grid-template-columns: 1fr; }
  .hero-title span:nth-child(2), .hero-title span:nth-child(3) { padding-left: 0; }
  .sites li { grid-template-columns: minmax(0, 1fr) auto; }
  .site-dept { grid-column: 1 / -1; }
  .log > div { grid-template-columns: 1fr; gap: 2px; }
  .brand-logo { height: 44px; }
}