:root {
  /* COLORES PRINCIPALES */
  --bg: #f4f7fa;
  --surface: #ffffff;

  --text: #111827;
  --muted: #5f6b76;

  /* AZUL DE MARCA */
  --accent: #0054a4;
  --accent-dark: #003f7d;
  --accent-light: #e7f1fa;

  --white: #ffffff;

  /* BORDES */
  --border: #d8e0e8;

  /* ESTRUCTURA */
  --max: 1180px;
}


/* =========================================================
   RESET
========================================================= */

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

html {
  scroll-behavior: smooth;
}

body {
  font-family:
    -apple-system,
    BlinkMacSystemFont,
    "Segoe UI",
    Roboto,
    Helvetica,
    Arial,
    sans-serif;

  background: var(--bg);
  color: var(--text);

  line-height: 1.6;
}

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

.container {
  width: min(92%, var(--max));
  margin: 0 auto;
}


/* =========================================================
   HEADER / NAV
========================================================= */

header {
  position: sticky;
  top: 0;
  z-index: 100;

  background: rgba(244, 247, 250, 0.94);

  backdrop-filter: blur(10px);

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

nav {
  min-height: 76px;

  display: flex;
  align-items: center;
  justify-content: space-between;

  gap: 30px;
}


/* LOGO */

.logo {
  font-size: 1.25rem;
  font-weight: 750;
  letter-spacing: -0.03em;
}

.logo span {
  color: var(--accent);
}


/* NAV LINKS */

nav ul {
  display: flex;

  list-style: none;

  gap: 28px;

  font-size: 0.94rem;
}

nav a {
  transition: color 0.2s ease;
}

nav a:hover {
  color: var(--accent);
}


/* NAV BUTTON */

.nav-button {
  background: var(--accent);
  color: var(--white);

  padding: 11px 18px;

  border-radius: 999px;

  font-size: 0.9rem;
  font-weight: 650;

  transition:
    background 0.2s ease,
    transform 0.2s ease;
}

.nav-button:hover {
  background: var(--accent-dark);

  transform: translateY(-1px);
}


/* =========================================================
   HERO
========================================================= */

.hero {
  padding: 90px 0 80px;
}

.hero-grid {
  display: grid;

  grid-template-columns: 1fr 1fr;

  gap: 70px;

  align-items: center;
}


/* EYEBROW */

.eyebrow {
  color: var(--accent-dark);

  text-transform: uppercase;

  letter-spacing: 0.14em;

  font-size: 0.75rem;

  font-weight: 750;

  margin-bottom: 18px;
}


/* H1 */

h1 {
  font-size: clamp(3rem, 6vw, 5.5rem);

  line-height: 0.98;

  letter-spacing: -0.055em;

  max-width: 700px;
}


/* HERO TEXT */

.hero p {
  color: var(--muted);

  font-size: 1.15rem;

  max-width: 590px;

  margin: 28px 0;
}


/* HERO BUTTONS */

.buttons {
  display: flex;

  gap: 12px;

  flex-wrap: wrap;
}

.button {
  display: inline-flex;

  align-items: center;
  justify-content: center;

  padding: 14px 22px;

  border-radius: 999px;

  font-weight: 700;

  transition:
    background 0.2s ease,
    color 0.2s ease,
    border-color 0.2s ease,
    transform 0.2s ease;
}


/* PRIMARY BUTTON */

.button-primary {
  background: var(--accent);

  color: var(--white);
}

.button-primary:hover {
  background: var(--accent-dark);

  transform: translateY(-2px);
}


/* SECONDARY BUTTON */

.button-secondary {
  border: 1px solid var(--border);

  background: var(--surface);

  color: var(--text);
}

.button-secondary:hover {
  border-color: var(--accent);

  color: var(--accent);
}


/* HERO IMAGE */

.hero-image {
  min-height: 520px;

  border-radius: 28px;

  background:
    linear-gradient(
      rgba(0, 0, 0, 0.08),
      rgba(0, 0, 0, 0.08)
    ),
    url("images/hero.jpg") center / cover;

  box-shadow:
    0 25px 70px rgba(17, 24, 39, 0.12);
}


/* =========================================================
   SECTIONS
========================================================= */

.section {
  padding: 100px 0;
}


/* SECCIONES SOBRE BLANCO */

.section-light {
  background: var(--surface);
}


/* SECTION TITLE */

.section-title {
  max-width: 700px;

  margin-bottom: 55px;
}

.section-title h2 {
  font-size: clamp(2.2rem, 4vw, 3.5rem);

  line-height: 1.05;

  letter-spacing: -0.04em;

  margin-bottom: 18px;
}

.section-title p {
  color: var(--muted);

  font-size: 1.08rem;
}


/* =========================================================
   SERVICES
========================================================= */

.services {
  display: grid;

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

  gap: 1px;

  background: var(--border);

  border: 1px solid var(--border);
}

.service {
  background: var(--surface);

  padding: 35px 28px;

  min-height: 230px;
}


/* SERVICE NUMBER */

.service-number {
  color: var(--accent);

  font-weight: 800;

  font-size: 0.8rem;

  margin-bottom: 45px;
}


/* SERVICE TITLE */

.service h3 {
  font-size: 1.25rem;

  margin-bottom: 10px;
}


/* SERVICE TEXT */

.service p {
  color: var(--muted);

  font-size: 0.95rem;
}


/* =========================================================
   PROCESS
========================================================= */

.process {
  display: grid;

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

  gap: 30px;
}

.step {
  border-top: 2px solid var(--accent);

  padding-top: 20px;
}

.step strong {
  display: block;

  margin-bottom: 12px;

  font-size: 1.1rem;
}

.step p {
  color: var(--muted);

  font-size: 0.95rem;
}


/* =========================================================
   BEFORE / AFTER
========================================================= */

.before-after {
  display: grid;

  grid-template-columns: 1fr 1fr;

  gap: 20px;
}

.photo-card {
  min-height: 500px;

  border-radius: 20px;

  overflow: hidden;

  background-size: cover;

  background-position: center;

  display: flex;

  align-items: flex-end;
}


/* BEFORE */

.photo-before {
  background-image:
    linear-gradient(
      transparent 60%,
      rgba(0, 0, 0, 0.55)
    ),
    url("images/antes.jpg");
}


/* AFTER */

.photo-after {
  background-image:
    linear-gradient(
      transparent 60%,
      rgba(0, 0, 0, 0.35)
    ),
    url("images/despues.jpg");
}


/* PHOTO LABEL */

.photo-label {
  color: var(--white);

  padding: 25px;

  font-weight: 750;

  text-transform: uppercase;

  letter-spacing: 0.1em;

  font-size: 0.75rem;
}


/* =========================================================
   WHY / SOBRE NOSOTROS
========================================================= */

.why-grid {
  display: grid;

  grid-template-columns: 1fr 1fr;

  gap: 80px;

  align-items: center;
}

.why-list {
  display: grid;

  gap: 22px;
}

.why-item {
  display: grid;

  grid-template-columns: 35px 1fr;

  gap: 15px;
}


/* CHECK */

.check {
  width: 28px;
  height: 28px;

  border-radius: 50%;

  background: var(--accent);

  color: var(--white);

  display: grid;

  place-items: center;

  font-size: 0.8rem;

  font-weight: bold;
}


/* WHY TITLE */

.why-item h3 {
  margin-bottom: 5px;
}


/* WHY TEXT */

.why-item p {
  color: var(--muted);
}


/* =========================================================
   CTA
========================================================= */

.cta {
  background: var(--accent);

  color: var(--white);

  border-radius: 30px;

  padding: 70px;

  text-align: center;
}

.cta h2 {
  font-size: clamp(2.2rem, 4vw, 4rem);

  line-height: 1;

  letter-spacing: -0.045em;

  margin-bottom: 20px;
}

.cta p {
  color: rgba(255, 255, 255, 0.86);

  max-width: 600px;

  margin: 0 auto 30px;
}


/* CTA BUTTON */

.cta .button-primary {
  background: var(--white);

  color: var(--accent);
}

.cta .button-primary:hover {
  background: var(--accent-light);

  color: var(--accent-dark);
}


/* =========================================================
   CONTACT
========================================================= */

.contact-grid {
  display: grid;

  grid-template-columns: 1fr 1fr;

  gap: 70px;
}


/* CONTACT INFO */

.contact-info p {
  color: var(--muted);

  margin: 15px 0 25px;
}

.contact-detail {
  margin: 12px 0;

  font-weight: 650;
}


/* FORM */

form {
  display: grid;

  gap: 14px;
}


/* INPUTS */

input,
textarea {
  width: 100%;

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

  background: var(--surface);

  color: var(--text);

  padding: 15px 16px;

  border-radius: 10px;

  font: inherit;

  outline: none;

  transition:
    border-color 0.2s ease,
    box-shadow 0.2s ease;
}


/* INPUT FOCUS */

input:focus,
textarea:focus {
  border-color: var(--accent);

  box-shadow:
    0 0 0 3px var(--accent-light);
}


/* PLACEHOLDER */

input::placeholder,
textarea::placeholder {
  color: #8a95a0;
}


/* TEXTAREA */

textarea {
  min-height: 150px;

  resize: vertical;
}


/* BUTTON RESET */

button {
  border: 0;

  cursor: pointer;

  font: inherit;
}


/* =========================================================
   FOOTER
========================================================= */

footer {
  padding: 40px 0;

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

  color: var(--muted);

  font-size: 0.9rem;

  background: var(--bg);
}

.footer-inner {
  display: flex;

  justify-content: space-between;

  gap: 20px;
}


/* =========================================================
   MOBILE
========================================================= */

@media (max-width: 900px) {

  nav ul {
    display: none;
  }

  .hero-grid,
  .why-grid,
  .contact-grid {
    grid-template-columns: 1fr;
  }

  .hero {
    padding-top: 55px;
  }

  .hero-image {
    min-height: 400px;
  }

  .services,
  .process {
    grid-template-columns: 1fr 1fr;
  }

  .before-after {
    grid-template-columns: 1fr;
  }

  .cta {
    padding: 45px 25px;
  }
}


/* =========================================================
   MOBILE PEQUEÑO
========================================================= */

@media (max-width: 600px) {

  .services,
  .process {
    grid-template-columns: 1fr;
  }

  .hero-image {
    min-height: 330px;
  }

  .section {
    padding: 70px 0;
  }

  .footer-inner {
    flex-direction: column;
  }

  h1 {
    font-size: clamp(2.7rem, 13vw, 4rem);
  }
}