/* =========================================================
  CSW Ingeniería Civil — Styles
========================================================= */

:root {
  --orange: #F8B133;
  --black: #000000;
  --dark: #1E1E1E;
  --white: #FFFFFF;
  --light-gray: #D9D9D9;
  --muted: rgba(255,255,255,.66);
  --border: rgba(255,255,255,.14);

  --font: 'Barlow', sans-serif;
  --container: 1020px;
  --header-height: 64px;

  --radius-sm: 12px;
  --radius-md: 18px;
  --radius-lg: 28px;

  --transition: .45s ease;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font);
  color: var(--white);
  background:
  radial-gradient(
    circle at 50% 0%,
    rgba(255,255,255,.025),
    transparent 26%
  ),
  linear-gradient(
    180deg,
    #070707 0%,
    #0B0B0B 18%,
    #101010 45%,
    #141414 70%,
    #171717 100%
  );
}

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

a {
  color: inherit;
  text-decoration: none;
}

button {
  font-family: inherit;
  border: 0;
  background: transparent;
}

.container {
  width: min(var(--container), calc(100% - 40px));
  margin: 0 auto;
}

.section-anchor {
  scroll-margin-top: 86px;
}

/* HEADER */
.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 1000;
  height: var(--header-height);

  background: rgba(30, 30, 30, 0);

  backdrop-filter: blur(0px);
  -webkit-backdrop-filter: blur(0px);

  border-bottom: 1px solid rgba(255,255,255,0);

  transition:
    background .45s ease,
    backdrop-filter .45s ease,
    border-color .45s ease;
}

.site-header.scrolled {
background: rgba(12, 12, 12, .72);
}

.header-inner {
  width: min(var(--container), calc(100% - 40px));
  height: 100%;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand img {
  width: 72px;
}

.desktop-nav {
  display: flex;
  gap: 34px;
}

.nav-link {
  font-size: .82rem;
  font-weight: 600;
  transition: var(--transition);
}

.nav-link:hover,
.nav-link.active {
  color: var(--orange);
}

.menu-toggle {
  display: none;
  width: 34px;
  height: 26px;
  cursor: pointer;
}

.menu-toggle span {
  display: block;
  width: 100%;
  height: 2px;
  margin: 6px 0;
  background: var(--orange);
  transition: var(--transition);
}

.mobile-nav {
  display: none;
}

/* HERO */
.hero {
  min-height: 75vh;
  padding: 130px 0 54px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero-copy {
  max-width: 380px;
  margin: 0 auto;
  transform: none;
}

.hero h1 {
  font-size: clamp(2rem, 3.5vw, 3.4rem);
  line-height: .82;
  font-weight: 400;
  letter-spacing: -.04em;
}

.hero h1 span {
  display: block;
  font-weight: 600;
}

.hero p {
  margin-top: 18px;
  color: var(--muted);
  font-size: 1.2rem;
  line-height: 1.35;
}

.text-cta {
  display: inline-flex;
  margin-top: 22px;
  color: var(--orange);
  font-size: 1.4rem;
  font-weight: 600;
  transition: var(--transition);
}

.text-cta:hover {
  transform: translateX(5px);
}

/* PORTFOLIO */
.portfolio {
  padding: 0 0 92px;
  overflow: hidden;
}

.portfolio-wrap {
  position: relative;
  width: 100%;
  overflow: hidden;
}

.portfolio-row {
  display: flex;
  gap: 6px;
}

/* CARRUSEL EN MOVIMIENTO */
.portfolio-row-moving {
  width: 100vw;
  overflow: hidden;
  margin-left: calc(50% - 50vw);
}

.portfolio-track {
  display: flex;
  gap: 14px;
  width: max-content;
  animation: portfolioMarquee 120s linear infinite;
  will-change: transform;
}

@keyframes portfolioMarquee {
  from {
    transform: translateX(0);
  }

  to {
    transform: translateX(calc(-25% - 3.5px));
  }
}

.portfolio-spacer {
  display: none;
}

.project-card {
  position: relative;
  flex: 0 0 320px;
  height: 420px;
  overflow: hidden;
  border-radius: var(--radius-md);
  background: var(--dark);
  isolation: isolate;
}

.project-card img,
.static-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: grayscale(100%) brightness(.72);
  transform: scale(1.01);
}

.project-card img {
  transition: .65s ease;
}

.project-card::after,
.static-card::after {
  content: "";
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,.6);
  z-index: 1;
  transition: .6s ease;
}

.project-info {
  position: absolute;
  left: 10px;
  right: 10px;
  bottom: 10px;
  z-index: 3;
  padding: 12px 10px;
  background: var(--light-gray);
  color: #242424;
  border-radius: 14px;
  text-align: center;
  opacity: 0;
  transform: translateY(16px);
  transition: .5s ease;
}

.project-info p {
  font-size: 1rem;
  line-height: 1.13;
}

.project-info strong {
  font-weight: 800;
}

.project-card:hover img {
  filter: grayscale(0%);
  transform: scale(1.045);
}

.project-card:hover::after {
  background: rgba(0,0,0,.04);
}

.project-card:hover .project-info {
  opacity: 1;
  transform: translateY(0);
}

.portfolio-track:hover {
  animation-play-state: paused;
}

@keyframes portfolioMarquee {
  from {
    transform: translateX(0);
  }

  to {
    transform: translateX(calc(-50% - 7px));
  }
}

/* PARTE INFERIOR */
.portfolio-bottom {
  position: relative;
  margin-top: 8px;
  overflow: hidden;
}

.portfolio-bottom::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 2;
  pointer-events: none;
  background: linear-gradient(
    180deg,
    rgba(20,20,20,0) 10%,
    rgba(20,20,20,.76) 65%,
    #101010 100%
  );
}

.portfolio-row-static {
  padding-left: 0;
  padding-right: 0;
  width: 100%;
  align-items: stretch;
}

.static-card {
  position: relative;
  flex: 1;
  min-width: 0;
  height: 320px;
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--dark);
}

.wide-static {
  flex: 1.4;
}

.portfolio-cta {
  position: absolute;
  left: 50%;
  bottom: 28px;
  z-index: 4;
  transform: translateX(-50%);
  text-align: center;
  min-width: 320px;
}

.portfolio-cta p,
.footer-cta p {
  margin-bottom: 8px;
  font-size: 1.3rem;
  font-weight: 500;
}

.pill-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 30px;
  padding: 6px 24px;
  border: 1.5px solid var(--white);
  border-radius: 999px;
  color: var(--orange);
  font-size: 1rem;
  font-weight: 600;
  transition: var(--transition);
}

.pill-cta:hover {
  background: var(--white);
  color: var(--black);
}

/* ABOUT */
.about {
  padding: 72px 0 95px;
}

.about-grid {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 64px;
  align-items: start;
}

.section-label h2 {
  font-size: clamp(1.2rem, 2vw, 1.7rem);
  line-height: .95;
  font-weight: 700;
  letter-spacing: -.02em;
}

.section-label h2 span {
  display: block;
}

.section-label::after {
  content: "";
  display: block;
  width: 54px;
  height: 3px;
  margin-top: 12px;
  background: var(--orange);
}
.about-content {
  max-width: 560px;
}

.about-content h2 {
  margin-bottom: 18px;
  font-size: clamp(1.35rem, 2vw, 1.75rem);
  line-height: 1.04;
  font-weight: 700;
}

.about-content p {
  margin-bottom: 14px;
  color: var(--muted);
  font-size: 1rem;
  line-height: 1.38;
}

.services-list {
  display: grid;
  gap: 18px;
  margin-top: 26px;
}

.services-list h3 {
  margin-bottom: 4px;
  color: var(--orange);
  font-size: 1rem;
}

.services-list p {
  margin: 0;
  font-size: 1rem;
}

/* TEAM */
.team-grid {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 64px;
  margin-top: 88px;
}

.section-title h2 {
  font-size: clamp(1.2rem, 2vw, 1.7rem);
  line-height: .95;
  font-weight: 650;
  letter-spacing: -.02em;
}

.section-title span {
  display: block;
}

.section-title::after {
  content: "";
  display: block;
  width: 54px;
  height: 3px;
  margin-top: 12px;
  background: var(--orange);
}

.team-list {
  display: grid;
  gap: 18px;
  max-width: 560px;
}

.team-card {
  display: grid;
  grid-template-columns: 150px 1fr;
  gap: 34px;
  align-items: center;
  min-height: 168px;
  padding: 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: rgba(255,255,255,.02);
  box-shadow: 0 18px 48px rgba(0,0,0,.2);
}

.team-card img {
  width: 100%;
  height: 170px;
  object-fit: cover;
  border-radius: 13px;
  filter: grayscale(100%);
}

.team-card h3 {
  margin-bottom: 1px;
  font-size: 1rem;
}

.team-card .role {
  margin-bottom: 20px;
  color: var(--orange);
  font-size: 1rem;
  font-weight: 700;
}

.team-card p {
  font-size: 1rem;
  line-height: 1.16;
}

/* TOOLS */
.tools {
  padding: 40px 0 95px;
  overflow: hidden;
}

.tools-inner {
  position: relative;
}

.tools-strip {
  display: flex;
  gap: 8px;
  height: 300px;
  width: 100%;
  padding: 0 24px;
}

.tool-image {
  position: relative;
  flex: 1;
  overflow: hidden;
  border-radius: var(--radius-sm);
  animation: toolAccordion 12s ease-in-out infinite;
}

.tool-image:nth-child(2) {
  animation-delay: -4s;
}

.tool-image:nth-child(3) {
  animation-delay: -8s;
}

.tool-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: grayscale(100%);
}

.tool-image::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(0,0,0,.12), rgba(0,0,0,.82)),
    rgba(0,0,0,.34);
}

@keyframes toolAccordion {
  0%, 22%, 100% {
    flex: 1;
  }

  38%, 58% {
    flex: 2.35;
  }
}

.tools-content {
  position: relative;
  z-index: 3;
  max-width: 620px;
  margin-top: -78px;
}

.tools-content h2 {
  font-size: clamp(1.8rem, 3vw, 2.65rem);
  line-height: .9;
  font-weight: 400;
  letter-spacing: -.035em;
}

.tools-content h2 span {
  display: block;
  color: var(--orange);
  font-weight: 700;
}

.tools-content p {
  max-width: 440px;
  margin-top: 22px;
  color: var(--muted);
  font-size: 1rem;
  line-height: 1.35;
}

.calculator-list {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-top: 28px;
}

.calculator-card {
  display: flex;
  align-items: center;
  gap: 16px;

  width: 100%;
  max-width: 420px;

  padding: 18px 24px;
  border-radius: 18px;

  background:
    linear-gradient(
      180deg,
      rgba(255,255,255,.10),
      rgba(255,255,255,.02)
    );

  border: 1px solid rgba(255,255,255,.05);

  transition: var(--transition);
}

.calculator-card:hover {
  transform: translateY(-3px);
  background: linear-gradient(180deg, rgba(248,177,51,.22), rgba(255,255,255,.05));
}

.calculator-card img {
  width: 28px;
  height: 28px;
}

.calculator-card span {
  font-size: 1rem;
  line-height: .95;
}

.calculator-card strong {
  font-weight: 700;
}

/* FOOTER */
.footer {
  padding: 62px 0 74px;
  background: rgba(255,255,255,.035);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 72px;
}

.footer-brand img {
  width: 82px;
  margin-bottom: 54px;
}

.footer-contact {
  justify-self: end;
  min-width: 260px;
}

.footer-contact h3 {
  margin-bottom: 7px;
  color: var(--orange);
  font-size: 1rem;
}

.footer-contact a {
  display: block;
  margin-bottom: 7px;
  font-size: 1rem;
  font-weight: 700;
  transition: var(--transition);
}

.footer-contact a:hover {
  color: var(--orange);
}

.footer-contact h3:nth-of-type(2) {
  margin-top: 28px;
}

.social-links {
  display: flex;
  gap: 11px;
}

.social-links img {
  width: 20px;
  height: 20px;
}

.footer-credit {
  margin-top: 20px;
  text-align: center;
  font-size: 12px;
  opacity: 0.7;
}

.footer-credit a {
  color: inherit;
  text-decoration: none;
  transition: opacity 0.3s ease;
}

.footer-credit a:hover {
  opacity: 0.7;
}

/* REVEAL */
.reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity .85s ease, transform .85s ease;
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* TABLET */
@media (max-width: 980px) {
  :root {
    --header-height: 70px;
  }

  .container,
  .header-inner {
    width: calc(100% - 56px);
  }

  .desktop-nav {
    display: none;
  }

  .menu-toggle {
    display: block;
  }

  .mobile-nav {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    display: grid;
    gap: 20px;
    padding: 34px 28px 38px;
    background: rgba(0,0,0,.95);
    backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border);
    opacity: 0;
    transform: translateY(-120%);
    pointer-events: none;
    transition: var(--transition);
  }

  .mobile-nav.open {
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
  }

  .mobile-link {
    font-size: 1.35rem;
    font-weight: 800;
  }

  .mobile-link.active {
    color: var(--orange);
  }

  .hero {
    min-height: 76vh;
    padding: 120px 0 42px;
  }

  .hero-copy {
    max-width: 430px;
    margin: 0 auto;
    transform: none;
  }

  .hero h1 {
    font-size: clamp(2.7rem, 8vw, 4.5rem);
    line-height: .88;
  }

  .hero p {
    font-size: 1rem;
    line-height: 1.42;
  }

  .text-cta {
    font-size: 1rem;
  }

  .project-card {
    flex: 0 0 240px;
    height: 360px;
    border-radius: 22px;
  }

  .project-info p {
    font-size: .76rem;
  }

  .static-card {
    flex: 1;
    min-width: 0;
    height: 300px;
  }

  .wide-static {
    flex: 1.25;
  }

  .portfolio-cta {
    width: min(520px, calc(100% - 56px));
    min-width: 0;
  }

  .portfolio-cta p,
  .footer-cta p {
    font-size: 1rem;
  }

  .pill-cta {
    min-height: 40px;
    padding: 9px 26px;
    font-size: .95rem;
  }

  .about-grid,
  .team-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .section-label h2,
  .section-title h2 {
    font-size: 1.65rem;
  }

  .about-content {
    max-width: 650px;
  }

  .about-content h2 {
    font-size: 1.8rem;
  }

  .about-content p {
    font-size: .98rem;
  }

  .services-list h3 {
    font-size: 1rem;
  }

  .services-list p {
    font-size: .94rem;
  }

  .team-grid {
    margin-top: 78px;
  }

  .team-list {
    max-width: 650px;
  }

  .team-card {
    grid-template-columns: 150px 1fr;
    gap: 28px;
    min-height: 160px;
    padding: 16px;
  }

  .team-card img {
    height: 130px;
  }

  .team-card h3 {
    font-size: 1rem;
  }

  .team-card .role {
    font-size: .92rem;
  }

  .team-card p {
    font-size: .86rem;
  }

  .tools-strip {
    width: 100%;
    height: 240px;
    padding: 0 20px;
  }

  .tools-content {
    max-width: 620px;
    margin: -64px auto 0;
  }

  .tools-content h2 {
    font-size: 2.6rem;
  }

  .tools-content p {
    font-size: .98rem;
  }

  .calculator-list {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
  }

  .calculator-card {
    min-width: 180px;
    padding: 14px 18px;
  }

  .calculator-card img {
    width: 28px;
    height: 28px;
  }

  .calculator-card span {
    font-size: .95rem;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .footer-contact {
    justify-self: start;
  }
}
/* MOBILE IPHONE */
@media (max-width: 640px) {
  :root {
    --header-height: 68px;
  }

  .container,
  .header-inner {
    width: calc(100% - 32px);
  }

  .section-anchor {
    scroll-margin-top: 82px;
  }

  .brand img {
    width: 78px;
  }

  .menu-toggle {
    width: 32px;
  }

  /* HERO */
  .hero {
    min-height: 76vh;
    padding: 108px 0 34px;
  }

  .hero-copy {
    max-width: 315px;
    margin: 0 auto;
    transform: none;
  }

  .hero h1 {
    font-size: clamp(2.4rem, 12vw, 3.25rem);
    line-height: .88;
    letter-spacing: -.04em;
  }

  .hero p {
    margin-top: 20px;
    font-size: .95rem;
    line-height: 1.42;
  }

  .text-cta {
    margin-top: 22px;
    font-size: .95rem;
  }

/* PORTFOLIO MOBILE */

.portfolio {
  padding-bottom: 74px;
}

.portfolio-row,
.portfolio-track {
  gap: 8px;
}

/* Carrusel touch */
.portfolio-row-moving {
  overflow-x: auto;
  overflow-y: hidden;

  -webkit-overflow-scrolling: touch;

  scroll-snap-type: x mandatory;
}

.portfolio-row-moving::-webkit-scrollbar {
  display: none;
}

.portfolio-track {
  animation: none;
  width: max-content;
}

/* Cards */
.project-card {
  flex: 0 0 72vw;
  height: 295px;

  border-radius: 20px;

  scroll-snap-align: center;
}

.project-card img {
  transition: .55s ease;
}

/* Overlay info */
.project-info {
  left: 9px;
  right: 9px;
  bottom: 9px;

  padding: 12px 9px;

  border-radius: 15px;

  opacity: 0;
  transform: translateY(14px);

  pointer-events: none;

  transition: .45s ease;
}

.project-info p {
  font-size: .68rem;
  line-height: 1.13;
}

/* Estado activo mobile */
.project-card.active .project-info {
  opacity: 1;
  transform: translateY(0);

  pointer-events: auto;
}

.project-card.active img {
  filter: grayscale(0%) brightness(1);
  transform: scale(1.04);
}

.project-card.active::after {
  background: rgba(0,0,0,.08);
}

/* Bottom portfolio */
.portfolio-bottom {
  margin-top: 8px;
}

.static-card {
  flex: 1;
  min-width: 0;

  height: 260px;

  border-radius: 20px;
}

.wide-static {
  flex: 1.2;
}

/* CTA */
.portfolio-cta {
  bottom: 22px;

  width: calc(100% - 32px);
  min-width: 0;
}

.portfolio-cta p,
.footer-cta p {
  margin-bottom: 10px;

  font-size: 1rem;
  line-height: 1.2;
}

.pill-cta {
  width: 100%;

  min-height: 42px;

  padding: 10px 18px;

  border-width: 1.5px;

  font-size: .95rem;
}
  
  /* NOSOTROS */
  .about {
    padding: 62px 0 80px;
  }

  .section-label h2,
  .section-title h2 {
    font-size: 1.45rem;
    line-height: .95;
  }

  .section-label::after,
  .section-title::after {
    width: 52px;
    height: 3px;
    margin-top: 12px;
  }

  .about-content h2 {
    font-size: 1.55rem;
    line-height: 1.05;
  }

  .about-content p {
    font-size: .95rem;
    line-height: 1.42;
  }

  .services-list {
    gap: 18px;
    margin-top: 26px;
  }

  .services-list h3 {
    font-size: .95rem;
  }

  .services-list p {
    font-size: .9rem;
  }

  /* EQUIPO */
  .team-grid {
    margin-top: 62px;
  }

  .team-list {
    gap: 16px;
  }

  .team-card {
    grid-template-columns: 108px 1fr;
    gap: 16px;
    min-height: 128px;
    padding: 12px;
    border-radius: 18px;
  }

  .team-card img {
    height: 108px;
    border-radius: 12px;
  }

  .team-card h3 {
    font-size: .9rem;
  }

  .team-card .role {
    margin-bottom: 12px;
    font-size: .82rem;
  }

  .team-card p {
    font-size: .76rem;
    line-height: 1.14;
  }

  /* HERRAMIENTAS */
  .tools {
    padding: 34px 0 78px;
  }

  .tools-strip {
    width: 100%;
    height: 165px;
    gap: 7px;
    padding: 0 10px;
  }

  .tool-image {
    border-radius: 14px;
  }

  .tools-content {
    width: calc(100% - 32px);
    margin-top: -46px;
    text-align: center;
  }

  .tools-content h2 {
    font-size: 2rem;
    line-height: .9;
  }

  .tools-content p {
    max-width: 330px;
    margin: 18px auto 0;
    font-size: .95rem;
    line-height: 1.35;
  }

  .calculator-list {
    display: grid;
    grid-template-columns: 1fr;
    gap: 14px;
    margin-top: 24px;
  }

  .calculator-card {
    width: 100%;
    min-width: 100%;
    padding: 16px 22px;
    gap: 16px;
    border-radius: 18px;
  }

  .calculator-card img {
    width: 32px;
    height: 32px;
  }

  .calculator-card span {
    font-size: 1.05rem;
    line-height: 1;
  }

  /* FOOTER */
  .footer {
    padding: 52px 0 62px;
  }

  .footer-brand img {
    width: 78px;
    margin-bottom: 40px;
  }

  .footer-contact {
    min-width: auto;
  }

  .footer-contact h3,
  .footer-contact a {
    font-size: .95rem;
  }

  .social-links img {
    width: 22px;
    height: 22px;
  }
}