/* =========================================================
   JF Constructora — Estilos generales
   ========================================================= */

:root {
  --color-primary: #010066;
  --color-primary-light: #1f2f8f;
  --color-accent: #a30000;
  --color-accent-dark: #7a0000;
  --color-accent-bright: #ff5a5a;
  --color-bg: #ffffff;
  --color-bg-alt: #f6f7f9;
  --color-text: #4a5568;
  --color-text-light: #8893a2;
  --color-heading: #0a1140;
  --color-border: #e6e9ed;

  --font-heading: 'Poppins', sans-serif;
  --font-body: 'Open Sans', sans-serif;

  --container-width: 1180px;
  --radius: 10px;
  --transition: 0.25s ease;
  --shadow: 0 10px 30px rgba(26, 43, 60, 0.08);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  color: var(--color-text);
  line-height: 1.65;
  background: var(--color-bg);
  overflow-x: hidden;
}

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

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

ul {
  list-style: none;
}

h1, h2, h3, h4 {
  font-family: var(--font-heading);
  color: var(--color-heading);
  line-height: 1.25;
}

.container {
  width: 100%;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px;
}

section {
  padding: 90px 0;
}

/* =========================================================
   Botones
   ========================================================= */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 30px;
  border-radius: var(--radius);
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 0.95rem;
  border: 2px solid transparent;
  cursor: pointer;
  transition: all var(--transition);
  white-space: nowrap;
}

.btn--primary {
  background: var(--color-accent);
  color: #fff;
}

.btn--primary:hover {
  background: var(--color-accent-dark);
  transform: translateY(-2px);
}

.btn--outline {
  background: transparent;
  border-color: rgba(255, 255, 255, 0.6);
  color: #fff;
}

.btn--outline:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: #fff;
}

.btn--small {
  padding: 10px 20px;
  font-size: 0.85rem;
}

.btn--large {
  padding: 16px 38px;
  font-size: 1rem;
}

.btn--full {
  width: 100%;
}

/* =========================================================
   Encabezados de sección
   ========================================================= */

.section__head {
  max-width: 640px;
  margin: 0 auto 56px;
  text-align: center;
}

.section__head--light .section__eyebrow,
.section__head--light .section__title {
  color: #fff;
}

.section__eyebrow {
  display: inline-block;
  color: var(--color-accent-dark);
  font-weight: 700;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  font-size: 0.8rem;
  margin-bottom: 12px;
}

.section__title {
  font-size: clamp(1.8rem, 3.2vw, 2.4rem);
  font-weight: 700;
  margin-bottom: 16px;
}

.section__text {
  color: var(--color-text-light);
  font-size: 1.02rem;
}

/* =========================================================
   Header
   ========================================================= */

.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: #fff;
  box-shadow: 0 2px 16px rgba(1, 0, 102, 0.08);
  transition: box-shadow var(--transition);
}

.header.scrolled {
  box-shadow: 0 4px 22px rgba(1, 0, 102, 0.14);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 84px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
}

.logo__img {
  height: 52px;
  width: auto;
}

.logo__badge {
  display: inline-flex;
  align-items: center;
  background: #fff;
  border-radius: 8px;
  padding: 10px 16px;
}

.logo__badge img {
  height: 40px;
  width: auto;
  display: block;
}

.nav__list {
  display: flex;
  gap: 36px;
}

.nav__link {
  color: var(--color-primary);
  font-weight: 600;
  font-size: 0.95rem;
  position: relative;
  padding: 6px 0;
  transition: color var(--transition);
}

.nav__link::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -2px;
  width: 0;
  height: 2px;
  background: var(--color-accent);
  transition: width var(--transition);
}

.nav__link:hover {
  color: var(--color-accent);
}

.nav__link:hover::after {
  width: 100%;
}

.header__actions {
  display: flex;
  align-items: center;
  gap: 24px;
}

.header__phone {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--color-primary);
  font-weight: 600;
  font-size: 0.9rem;
}

.header__phone svg {
  color: var(--color-accent);
}

.nav__toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 38px;
  height: 38px;
  background: transparent;
  border: none;
  cursor: pointer;
}

.nav__toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-primary);
  margin: 0 auto;
  transition: all var(--transition);
}

/* =========================================================
   Hero
   ========================================================= */

.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  background:
    linear-gradient(120deg, rgba(1, 0, 102, 0.88) 0%, rgba(1, 0, 102, 0.78) 55%, rgba(1, 0, 102, 0.55) 100%),
    url("../images/hero-bg.jpg");
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
}

.hero__content {
  position: relative;
  z-index: 2;
  max-width: 720px;
  padding-top: 84px;
}

.hero__eyebrow {
  color: var(--color-accent-bright);
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  font-size: 0.85rem;
  margin-bottom: 18px;
}

.hero__title {
  font-size: clamp(2.2rem, 5.5vw, 3.6rem);
  font-weight: 800;
  color: #fff;
  margin-bottom: 22px;
}

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

.hero__text {
  color: #d4dbe3;
  font-size: 1.05rem;
  max-width: 560px;
  margin-bottom: 36px;
}

.hero__actions {
  display: flex;
  gap: 18px;
  flex-wrap: wrap;
}

.hero__scroll {
  position: absolute;
  bottom: 36px;
  left: 50%;
  transform: translateX(-50%);
  color: #fff;
  opacity: 0.7;
  animation: bounce 2.2s infinite;
}

@keyframes bounce {
  0%, 100% { transform: translate(-50%, 0); }
  50% { transform: translate(-50%, 10px); }
}

/* =========================================================
   Stats
   ========================================================= */

.stats {
  background: var(--color-primary);
  padding: 50px 0;
}

.stats__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  text-align: center;
}

.stat__number,
.stat__suffix {
  font-family: var(--font-heading);
  font-size: 2.6rem;
  font-weight: 800;
  color: var(--color-accent-bright);
}

.stat__label {
  color: #c5cdd6;
  margin-top: 6px;
  font-size: 0.95rem;
}

/* =========================================================
   Nosotros
   ========================================================= */

.about__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 70px;
  align-items: center;
}

.about__media {
  position: relative;
}

.about__media img {
  border-radius: var(--radius);
  width: 100%;
}

.about__badge {
  position: absolute;
  bottom: -24px;
  right: -24px;
  background: var(--color-accent);
  color: #fff;
  border-radius: var(--radius);
  padding: 20px 28px;
  text-align: center;
  box-shadow: var(--shadow);
}

.about__badge strong {
  display: block;
  font-family: var(--font-heading);
  font-size: 1.8rem;
  font-weight: 800;
}

.about__badge span {
  font-size: 0.8rem;
  font-weight: 600;
}

.about__list {
  margin: 28px 0 32px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.about__list li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-weight: 600;
  color: var(--color-heading);
}

.about__list svg {
  flex-shrink: 0;
  width: 22px;
  height: 22px;
  color: var(--color-accent-dark);
  margin-top: 2px;
}

/* =========================================================
   Servicios
   ========================================================= */

.services {
  background: var(--color-bg-alt);
}

.services__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.service-card {
  background: #fff;
  border-radius: var(--radius);
  padding: 36px 30px;
  box-shadow: var(--shadow);
  transition: transform var(--transition), box-shadow var(--transition);
}

.service-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 16px 36px rgba(26, 43, 60, 0.12);
}

.service-card__icon {
  width: 58px;
  height: 58px;
  border-radius: 14px;
  background: rgba(163, 0, 0, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 22px;
}

.service-card__icon svg {
  width: 28px;
  height: 28px;
  color: var(--color-accent-dark);
}

.service-card h3 {
  font-size: 1.15rem;
  margin-bottom: 10px;
}

.service-card p {
  font-size: 0.95rem;
  color: var(--color-text-light);
}

/* =========================================================
   Por qué elegirnos
   ========================================================= */

.why__grid {
  display: grid;
  grid-template-columns: 1fr 1.15fr;
  gap: 70px;
  align-items: center;
}

.why__media img {
  border-radius: var(--radius);
  width: 100%;
}

.why__features {
  display: flex;
  flex-direction: column;
  gap: 26px;
  margin-top: 28px;
}

.why__feature {
  display: flex;
  gap: 18px;
  align-items: flex-start;
}

.why__icon {
  flex-shrink: 0;
  width: 50px;
  height: 50px;
  border-radius: 12px;
  background: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
}

.why__icon svg {
  width: 24px;
  height: 24px;
  color: var(--color-accent-bright);
}

.why__feature h4 {
  font-size: 1.05rem;
  margin-bottom: 4px;
}

.why__feature p {
  font-size: 0.93rem;
  color: var(--color-text-light);
}

/* =========================================================
   Proyectos
   ========================================================= */

.projects__filters {
  display: flex;
  justify-content: center;
  gap: 14px;
  margin-bottom: 44px;
  flex-wrap: wrap;
}

.filter {
  border: 2px solid var(--color-border);
  background: transparent;
  padding: 10px 24px;
  border-radius: 999px;
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 0.88rem;
  color: var(--color-text);
  cursor: pointer;
  transition: all var(--transition);
}

.filter:hover,
.filter.active {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: #fff;
}

.projects__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 26px;
}

.project-card {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  aspect-ratio: 4/3;
}

.project-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.project-card:hover img {
  transform: scale(1.08);
}

.project-card__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(26, 43, 60, 0.92) 0%, rgba(26, 43, 60, 0.1) 60%);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 24px;
  color: #fff;
}

.project-card__tag {
  display: inline-block;
  background: var(--color-accent);
  color: #fff;
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  padding: 4px 12px;
  border-radius: 999px;
  margin-bottom: 10px;
  width: fit-content;
}

.project-card__overlay h3 {
  color: #fff;
  font-size: 1.1rem;
  margin-bottom: 4px;
}

.project-card__overlay p {
  font-size: 0.85rem;
  color: #d4dbe3;
}

.project-card.hidden {
  display: none;
}

/* =========================================================
   Proceso
   ========================================================= */

.process {
  background: var(--color-primary);
  background-image: linear-gradient(rgba(1, 0, 102, 0.93), rgba(1, 0, 102, 0.93)),
    repeating-linear-gradient(135deg, #1f2f8f 0px, #1f2f8f 40px, #010066 40px, #010066 80px);
}

.process__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 30px;
}

.process__step {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius);
  padding: 32px 26px;
}

.process__number {
  display: inline-block;
  font-family: var(--font-heading);
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--color-accent-bright);
  margin-bottom: 14px;
}

.process__step h3 {
  color: #fff;
  font-size: 1.1rem;
  margin-bottom: 10px;
}

.process__step p {
  color: #b9c2cd;
  font-size: 0.92rem;
}

/* =========================================================
   Clientes
   ========================================================= */

.clients {
  background: var(--color-bg-alt);
}

.clients__grid {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 18px;
}

.client-badge {
  display: inline-flex;
  align-items: center;
  padding: 14px 32px;
  background: #fff;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius);
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--color-primary);
  letter-spacing: 0.5px;
}

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

.cta {
  background: var(--color-accent);
  padding: 60px 0;
}

.cta__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 30px;
  flex-wrap: wrap;
}

.cta__inner h2 {
  font-size: clamp(1.5rem, 3vw, 2rem);
  margin-bottom: 8px;
  color: #fff;
}

.cta__inner p {
  color: rgba(255, 255, 255, 0.85);
  font-weight: 600;
}

.cta .btn--primary {
  background: var(--color-primary);
  color: #fff;
}

.cta .btn--primary:hover {
  background: #1f2f8f;
}

/* =========================================================
   Contacto
   ========================================================= */

.contact {
  background: var(--color-bg-alt);
}

.contact__grid {
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  gap: 70px;
}

.contact__list {
  display: flex;
  flex-direction: column;
  gap: 22px;
  margin: 30px 0;
}

.contact__list li {
  display: flex;
  gap: 16px;
  align-items: flex-start;
}

.contact__list strong {
  color: var(--color-heading);
  display: block;
  margin-bottom: 2px;
}

.contact__list p {
  font-size: 0.92rem;
}

.contact__icon {
  flex-shrink: 0;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
}

.contact__icon svg {
  width: 20px;
  height: 20px;
  color: var(--color-accent-bright);
}

.contact__form {
  background: #fff;
  border-radius: var(--radius);
  padding: 40px;
  box-shadow: var(--shadow);
}

.form__row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}

.form__group {
  margin-bottom: 18px;
}

.form__group label {
  display: block;
  font-weight: 600;
  font-size: 0.88rem;
  color: var(--color-heading);
  margin-bottom: 8px;
}

.form__group input,
.form__group select,
.form__group textarea {
  width: 100%;
  padding: 12px 16px;
  border: 1.5px solid var(--color-border);
  border-radius: 8px;
  font-family: var(--font-body);
  font-size: 0.95rem;
  color: var(--color-text);
  background: #fff;
  transition: border-color var(--transition);
  resize: vertical;
}

.form__group input:focus,
.form__group select:focus,
.form__group textarea:focus {
  outline: none;
  border-color: var(--color-accent);
}

.form__note {
  margin-top: 14px;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-accent-dark);
  min-height: 1.2em;
}

/* =========================================================
   Footer
   ========================================================= */

.footer {
  background: #03052b;
  color: #aab4c0;
  padding: 70px 0 0;
}

.footer__grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.3fr;
  gap: 40px;
  padding-bottom: 50px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.logo--footer {
  margin-bottom: 16px;
}

.footer__col p {
  font-size: 0.92rem;
  line-height: 1.7;
}

.footer__col h4 {
  color: #fff;
  font-size: 1rem;
  margin-bottom: 20px;
}

.footer__col ul {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer__col a {
  font-size: 0.92rem;
  transition: color var(--transition);
}

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

.footer__contact li {
  font-size: 0.92rem;
  line-height: 1.6;
}

.footer__bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
  padding: 26px 0;
  font-size: 0.85rem;
}

/* =========================================================
   Back to top
   ========================================================= */

.back-to-top {
  position: fixed;
  bottom: 28px;
  right: 28px;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--color-accent);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow);
  opacity: 0;
  pointer-events: none;
  transform: translateY(10px);
  transition: all var(--transition);
  z-index: 999;
}

.back-to-top.visible {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

/* =========================================================
   Responsive
   ========================================================= */

@media (max-width: 1024px) {
  .about__grid,
  .why__grid,
  .contact__grid {
    grid-template-columns: 1fr;
    gap: 50px;
  }

  .why__media {
    order: 2;
  }

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

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

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

  .stats__grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 40px;
  }

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

@media (max-width: 860px) {
  .nav {
    position: fixed;
    top: 0;
    right: -100%;
    width: min(320px, 80%);
    height: 100vh;
    background: #fff;
    padding: 110px 36px 36px;
    transition: right var(--transition);
    box-shadow: -10px 0 30px rgba(1, 0, 102, 0.15);
  }

  .nav.open {
    right: 0;
  }

  .nav__list {
    flex-direction: column;
    gap: 26px;
  }

  .nav__toggle {
    display: flex;
  }

  .nav__toggle.open span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
  }

  .nav__toggle.open span:nth-child(2) {
    opacity: 0;
  }

  .nav__toggle.open span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
  }

  .header__phone {
    display: none;
  }
}

@media (max-width: 640px) {
  section {
    padding: 64px 0;
  }

  .services__grid,
  .projects__grid,
  .process__grid,
  .footer__grid {
    grid-template-columns: 1fr;
  }

  .stats__grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 28px;
  }

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

  .contact__form {
    padding: 28px;
  }

  .cta__inner {
    text-align: center;
    justify-content: center;
  }

  .about__badge {
    right: 16px;
    bottom: -20px;
    padding: 14px 20px;
  }

  .hero__title {
    font-size: 2.2rem;
  }
}