:root {
  --bg: #070707;
  --text: #f2f2ef;
  --muted: #8a8a86;
  --line: rgba(255, 255, 255, 0.12);

  --page-x: 28px;
  --page-y: 24px;
  --gap: 8px;
}

/* RESET */

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

html {
  background: var(--bg);
  scroll-behavior: smooth;
}

body {
  min-height: 100vh;
  background: var(--bg);
  color: var(--text);

  font-family:
    -apple-system,
    BlinkMacSystemFont,
    "Helvetica Neue",
    Helvetica,
    Arial,
    sans-serif;

  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

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

/* PAGE */

.site {
  min-height: 100vh;
  padding:
    var(--page-y)
    var(--page-x)
    40px;
}

/* HEADER */

.site-header {
  position: relative;
  z-index: 20;

  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;

  margin-bottom: 28px;
}

.brand {
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.22em;
  text-transform: uppercase;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 32px;

  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.main-nav a {
  position: relative;
  color: rgba(255, 255, 255, 0.72);
  transition: color 0.25s ease;
}

.main-nav a::after {
  content: "";
  position: absolute;

  left: 0;
  bottom: -5px;

  width: 100%;
  height: 1px;

  background: currentColor;

  transform: scaleX(0);
  transform-origin: right;
  transition: transform 0.3s ease;
}

.main-nav a:hover {
  color: #fff;
}

.main-nav a:hover::after {
  transform: scaleX(1);
  transform-origin: left;
}

/* PORTFOLIO GRID */

.portfolio-grid {
  display: grid;

  grid-template-columns: repeat(4, minmax(0, 1fr));

  gap: var(--gap);

  width: 100%;
}

/* FRAME */

.portfolio-item {
  position: relative;

  width: 100%;
  aspect-ratio: 4 / 5;

  overflow: hidden;
  background: #111;

  cursor: default;
}

/* IMAGE */

.portfolio-item img {
  width: 100%;
  height: 100%;

  object-fit: cover;

  transform: scale(1.08);

  transition:
    transform 0.45s cubic-bezier(.2, .8, .2, 1),
    filter 0.4s ease;

  will-change: transform;

  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
}

/* HOVER */

.portfolio-item:hover img {
  filter: brightness(1.025);
}

/* NUMERACIÓN OPCIONAL */

.portfolio-number {
  position: absolute;

  left: 14px;
  bottom: 12px;

  z-index: 3;

  font-size: 11px;
  font-weight: 400;

  letter-spacing: 0.08em;

  color: rgba(255, 255, 255, 0.85);

  pointer-events: none;
}

/* SOMBRA SUAVE */

.portfolio-item::after {
  content: "";

  position: absolute;
  inset: 0;

  background:
    linear-gradient(
      to top,
      rgba(0, 0, 0, 0.15),
      transparent 30%
    );

  pointer-events: none;

  opacity: 0.45;
}

/* POSICIÓN INDIVIDUAL DE CADA FOTO */

.foto-01 img {
  object-position: 10% 45%;
}

.foto-02 img {
  object-position: 50% 50%;
}

.foto-03 img {
  object-position: 50% 54%;
}

.foto-04 img {
  object-position: 30% 50%;
}

.foto-05 img {
  object-position: 50% 10%;
}

.foto-06 img {
  object-position: 50% 1%;
}

.foto-07 img {
  object-position: 50% -10%;
}

.foto-08 img {
  object-position: 40% 35%;
}

.foto-09 img {
  object-position: 50% -10%;
}

.foto-10 img {
  object-position: 50% 48%;
}

.foto-11 img {
  object-position: 50% 55%;
}

.foto-12 img {
  object-position: 50% 42%;
}

/* ETIQUETAS DE SECCIÓN */

.section-label {
  margin-bottom: 48px;

  font-size: 13px;
  letter-spacing: 0.16em;
  text-transform: uppercase;

  color: var(--muted);
}

/* SERVICES */

.services-section {
  padding: 140px 0 60px;
}

.services-list {
  border-top: 1px solid var(--line);
}

.service-item {
  display: grid;
  grid-template-columns: 90px 1fr;

  padding: 38px 0 42px;

  border-bottom: 1px solid var(--line);

  transition:
    padding-left 0.35s cubic-bezier(.2, .8, .2, 1),
    background 0.35s ease;
}

.service-number {
  padding-top: 10px;

  font-size: 11px;
  letter-spacing: 0.1em;

  color: var(--muted);
}

.service-content {
  display: grid;
  grid-template-columns: minmax(300px, 1fr) minmax(260px, 440px);

  align-items: end;
  gap: 80px;
}

.service-content h2 {
  font-size: clamp(42px, 5vw, 82px);

  font-weight: 300;
  line-height: 0.95;

  letter-spacing: -0.05em;
}

.service-content p {
  max-width: 420px;

  font-size: 16px;
  font-weight: 300;
  line-height: 1.65;

  color: var(--muted);
}

@media (hover: hover) {
  .service-item:hover {
    padding-left: 12px;
  }

  .service-item:hover h2 {
    color: #fff;
  }
}

/* ABOUT */

.about-section {
  padding: 70px 0 110px;
}

.about-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(280px, 0.8fr);

  gap: 100px;

  align-items: start;
}

.about-intro p {
  max-width: 900px;

  font-size: clamp(42px, 5.5vw, 88px);
  font-weight: 300;
  line-height: 0.98;

  letter-spacing: -0.05em;
}

.about-copy {
  padding-top: 10px;
}

.about-copy p {
  margin-bottom: 22px;

  font-size: 16px;
  font-weight: 300;
  line-height: 1.7;

  color: var(--muted);
}

.about-copy p:first-child {
  color: var(--text);
}

/* CONTACT */

.contact-section {
  padding: 90px 0 110px;
}

.contact-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(280px, 0.8fr);

  gap: 100px;

  align-items: end;
}

.contact-main p {
  max-width: 950px;

  font-size: clamp(48px, 7vw, 110px);
  font-weight: 300;
  line-height: 0.92;

  letter-spacing: -0.055em;
}

.contact-details {
  display: flex;
  flex-direction: column;
  align-items: flex-start;

  gap: 18px;

  padding-bottom: 8px;
}

.contact-email,
.contact-link {
  position: relative;

  font-size: 16px;
  font-weight: 300;

  color: var(--text);
}

.contact-email::after,
.contact-link::after {
  content: "";

  position: absolute;

  left: 0;
  bottom: -5px;

  width: 100%;
  height: 1px;

  background: currentColor;

  transform: scaleX(0);
  transform-origin: right;

  transition: transform 0.3s ease;
}

.contact-email:hover::after,
.contact-link:hover::after {
  transform: scaleX(1);
  transform-origin: left;
}

.contact-location {
  margin-top: 8px;

  font-size: 14px;
  color: var(--muted);
}

/* FOOTER */

.site-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;

  gap: 30px;

  margin-top: 34px;
  padding-top: 16px;

  border-top: 1px solid var(--line);

  font-size: 11px;
  color: var(--muted);

  letter-spacing: 0.05em;
}

.footer-links {
  display: flex;
  gap: 24px;
}

.footer-links a {
  transition: color 0.25s ease;
}

.footer-links a:hover {
  color: var(--text);
}

/* TABLET */

@media (max-width: 1100px) {
  :root {
    --page-x: 20px;
  }

  .portfolio-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .main-nav {
    gap: 22px;
  }
}

@media (max-width: 900px) {

  .services-section {
    padding: 100px 0 60px;
  }

  .service-content {
    grid-template-columns: 1fr;
    gap: 22px;
  }

  .service-content p {
    max-width: 520px;
  }

  .about-grid {
    grid-template-columns: 1fr;
    gap: 45px;
  }

  .about-copy {
    max-width: 600px;
  }

  .contact-grid {
    grid-template-columns: 1fr;
    gap: 50px;
  }
}

/* MÓVIL */

@media (max-width: 760px) {
  :root {
    --page-x: 14px;
    --page-y: 18px;
    --gap: 5px;
  }

  .site-header {
    display: block;
    margin-bottom: 20px;
  }

  .brand {
    margin-bottom: 18px;
  }

  .main-nav {
    width: 100%;

    justify-content: space-between;

    gap: 14px;

    font-size: 10px;
  }

  .portfolio-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .portfolio-item {
    aspect-ratio: 4 / 5;
  }

  .portfolio-number {
    left: 9px;
    bottom: 8px;

    font-size: 9px;
  }

  .site-footer {
    flex-direction: column;
    align-items: flex-start;

    gap: 12px;

    margin-top: 24px;
  }
}

@media (max-width: 600px) {

  .services-section {
    padding: 80px 0 50px;
  }

  .section-label {
    margin-bottom: 30px;
    font-size: 12px;
  }

  .service-item {
    grid-template-columns: 38px 1fr;

    padding: 28px 0 32px;
  }

  .service-number {
    padding-top: 6px;
  }

  .service-content {
    gap: 16px;
  }

  .service-content h2 {
    font-size: clamp(34px, 10vw, 52px);
  }

  .service-content p {
    font-size: 14px;
  }

  .about-section {
    padding: 60px 0 80px;
  }

  .about-grid {
    gap: 32px;
  }

  .about-intro p {
    font-size: clamp(34px, 11vw, 56px);
  }

  .about-copy p {
    font-size: 15px;
  }

  .contact-section {
    padding: 70px 0 80px;
  }

  .contact-main p {
    font-size: clamp(42px, 14vw, 70px);
  }

  .contact-details {
    gap: 14px;
  }

  .contact-email,
  .contact-link {
    font-size: 15px;
  }

  .contact-location {
    font-size: 13px;
  }
}

/* MÓVIL MUY PEQUEÑO */

@media (max-width: 420px) {
  .main-nav {
    flex-wrap: wrap;
    justify-content: flex-start;

    row-gap: 8px;
  }

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

  .portfolio-item {
    aspect-ratio: 4 / 5;
  }
}

/* SIN EFECTOS DE MOVIMIENTO */

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .portfolio-item img,
  .main-nav a,
  .main-nav a::after,
  .footer-links a,
  .contact-email,
  .contact-link {
    transition: none;
  }

  .portfolio-item img {
    transform: scale(1.02) !important;
  }
}

/* DESACTIVAR EFECTO EN DISPOSITIVOS SIN RATÓN */

@media (hover: none), (pointer: coarse) {
  .portfolio-item img {
    transform: scale(1.03) !important;
  }

  .portfolio-item:hover img {
    filter: none;
  }
}