/* ============================================
   GRUPO INPROARQ — Stylesheet
   Paleta: Azul noche, Acero, Naranja industrial
   ============================================ */

:root {
  /* Paleta extraída del logo Inproarq */
  --azul-noche: #0D2147;       /* Azul marino profundo del logo */
  --acero: #163670;            /* Azul medio */
  --acero-medio: #1E4D9E;      /* Azul más claro para hover/acentos */
  --naranja: #E8621A;          /* Naranja industrial (contraste) */
  --naranja-hover: #C94E0E;
  --gris-claro: #F0F3F8;       /* Gris con tinte azulado */
  --gris-medio: #C8D0DC;
  --gris-texto: #5A6478;
  --blanco: #FFFFFF;
  --texto-principal: #0D2147;
  --texto-cuerpo: #2C3A52;

  --font-display: 'Barlow Condensed', sans-serif;
  --font-body: 'Inter', sans-serif;

  --border-radius: 4px;
  --border-radius-lg: 8px;
  --shadow: 0 4px 24px rgba(13,27,42,0.10);
  --shadow-lg: 0 8px 48px rgba(13,27,42,0.18);
  --transition: 0.22s ease;
  --container: 1180px;
  --section-gap: 96px;
}

/* ============ RESET ============ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-body);
  color: var(--texto-principal);
  background: var(--blanco);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
img { display: block; max-width: 100%; }
a { text-decoration: none; color: inherit; }
ul { list-style: none; }
input, textarea, select, button { font-family: inherit; }

/* ============ CONTAINER ============ */
.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

/* ============ TYPOGRAPHY ============ */
.section-eyebrow {
  font-family: var(--font-body);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--naranja);
  margin-bottom: 10px;
}
.section-title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 2.8rem);
  font-weight: 700;
  line-height: 1.15;
  color: var(--azul-noche);
  margin-bottom: 16px;
}
.section-desc {
  font-size: 1.05rem;
  color: var(--gris-texto);
  max-width: 560px;
  line-height: 1.7;
}
.section-header {
  text-align: center;
  margin-bottom: 56px;
}
.section-header .section-desc {
  margin: 0 auto;
}
.accent { color: var(--naranja); }
.body-text {
  font-size: 1rem;
  color: var(--texto-cuerpo);
  line-height: 1.75;
  margin-bottom: 16px;
}

/* ============ BUTTONS ============ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 13px 28px;
  border-radius: var(--border-radius);
  font-size: 0.92rem;
  font-weight: 600;
  cursor: pointer;
  border: 2px solid transparent;
  transition: background var(--transition), color var(--transition), border-color var(--transition), transform var(--transition);
  white-space: nowrap;
}
.btn:active { transform: scale(0.97); }
.btn-primary {
  background: var(--naranja);
  color: var(--blanco);
  border-color: var(--naranja);
}
.btn-primary:hover {
  background: var(--naranja-hover);
  border-color: var(--naranja-hover);
}
.btn-outline {
  background: transparent;
  color: var(--blanco);
  border-color: rgba(255,255,255,0.6);
}
.btn-outline:hover {
  background: rgba(255,255,255,0.12);
  border-color: var(--blanco);
}
.btn-ghost {
  background: transparent;
  color: var(--acero);
  border-color: var(--acero);
  font-size: 0.85rem;
  padding: 9px 20px;
}
.btn-ghost:hover {
  background: var(--acero);
  color: var(--blanco);
}
.btn-full { width: 100%; justify-content: center; }

/* ============ HEADER ============ */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: transparent;
  transition: background var(--transition), box-shadow var(--transition), backdrop-filter var(--transition);
  padding: 0;
}
.header.scrolled {
  background: rgba(13,33,71,0.97);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  box-shadow: 0 2px 24px rgba(0,0,0,0.30);
}
.header-inner {
  display: flex;
  align-items: center;
  height: 82px;
  gap: 32px;
}
/* Logo real */
.logo { display: flex; align-items: center; }
.logo-img {
  display: block;
  height: 64px;
  width: auto;
  max-width: 280px;
  object-fit: contain;
  filter: brightness(0) invert(1);
  transition: opacity var(--transition), transform var(--transition);
}
.logo-img:hover { opacity: 0.9; transform: scale(1.02); }
.logo-img--full { display: block; }
.logo-img--icon { display: none; }

/* Footer logo */
.footer-logo-img {
  height: 56px;
  width: auto;
  max-width: 240px;
  object-fit: contain;
  filter: brightness(0) invert(1);
  opacity: 0.92;
  margin-bottom: 14px;
}
.nav { margin-left: auto; }
.nav-list {
  display: flex;
  gap: 32px;
}
.nav-link {
  font-size: 0.88rem;
  font-weight: 500;
  color: rgba(255,255,255,0.85);
  letter-spacing: 0.02em;
  transition: color var(--transition);
  position: relative;
}
.nav-link::after {
  content: '';
  position: absolute;
  bottom: -3px;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--naranja);
  transform: scaleX(0);
  transition: transform var(--transition);
}
.nav-link:hover { color: var(--blanco); }
.nav-link:hover::after { transform: scaleX(1); }
.header-cta { margin-left: 16px; }
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  margin-left: auto;
  padding: 4px;
}
.hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--blanco);
  transition: transform var(--transition), opacity var(--transition);
}

/* ============ HERO ============ */
.hero {
  position: relative;
  min-height: 100vh;
  background-color: #0D2147;
  /* Imagen de alta resolución de ingeniería industrial — Unsplash (libre de uso) */
  background-image: url('https://images.unsplash.com/photo-1581094794329-c8112a89af12?w=1920&q=85&auto=format&fit=crop');
  background-size: cover;
  background-position: center 40%;
  background-repeat: no-repeat;
  display: flex;
  align-items: center;
  overflow: hidden;
  padding-top: 82px;
}
/* Overlay que mezcla la imagen con el azul del logo #0D2147 */
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    linear-gradient(
      105deg,
      rgba(13,33,71,0.92) 0%,
      rgba(13,33,71,0.88) 45%,
      rgba(13,33,71,0.55) 75%,
      rgba(13,33,71,0.35) 100%
    );
  z-index: 1;
}
/* Diagonal accent line — signature element */
.hero-diagonal {
  position: absolute;
  top: 0;
  right: 15%;
  width: 4px;
  height: 120%;
  background: linear-gradient(to bottom, transparent, var(--naranja) 20%, var(--naranja) 75%, transparent);
  transform: rotate(-8deg);
  transform-origin: top center;
  opacity: 0.8;
  z-index: 2;
}
.hero-diagonal::after {
  content: '';
  position: absolute;
  top: 15%;
  left: -20px;
  width: 2px;
  height: 60%;
  background: linear-gradient(to bottom, transparent, rgba(232,98,26,0.4), transparent);
}
.hero-content {
  position: relative;
  z-index: 2;
  padding: 80px 24px 100px;
  max-width: var(--container);
  margin: 0 auto;
  width: 100%;
}
.hero-eyebrow {
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--naranja);
  margin-bottom: 20px;
}
.hero-title {
  font-family: var(--font-display);
  font-size: clamp(3rem, 7vw, 5.5rem);
  font-weight: 800;
  line-height: 1.05;
  color: var(--blanco);
  margin-bottom: 24px;
  max-width: 700px;
}
.hero-sub {
  font-size: 1.1rem;
  color: rgba(255,255,255,0.72);
  max-width: 540px;
  line-height: 1.7;
  margin-bottom: 40px;
}
.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 72px;
}
.hero-stats {
  display: flex;
  gap: 56px;
  flex-wrap: wrap;
  padding-top: 32px;
  border-top: 1px solid rgba(255,255,255,0.12);
}
.stat {}
.stat-num {
  display: block;
  font-family: var(--font-display);
  font-size: 2.4rem;
  font-weight: 800;
  color: var(--naranja);
  line-height: 1;
}
.stat-label {
  font-size: 0.8rem;
  color: rgba(255,255,255,0.55);
  letter-spacing: 0.04em;
  margin-top: 4px;
}

/* ============ SECTION BASE ============ */
.section {
  padding: var(--section-gap) 0;
}

/* ============ NOSOTROS ============ */
.nosotros { background: var(--blanco); }
.nosotros-grid {
  display: grid;
  grid-template-columns: 1fr 380px;
  gap: 64px;
  align-items: start;
}
.valores-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-top: 40px;
}
.valor {
  padding: 20px;
  border-left: 3px solid var(--naranja);
  background: var(--gris-claro);
  border-radius: 0 var(--border-radius-lg) var(--border-radius-lg) 0;
}
.valor-icon { font-size: 1.4rem; margin-bottom: 8px; }
.valor h4 {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--azul-noche);
  margin-bottom: 6px;
}
.valor p { font-size: 0.85rem; color: var(--gris-texto); line-height: 1.6; }
.nosotros-aside { display: flex; flex-direction: column; gap: 20px; padding-top: 8px; }
.mision-card, .vision-card {
  padding: 28px;
  border-radius: var(--border-radius-lg);
}
.mision-card {
  background: var(--azul-noche);
  color: var(--blanco);
}
.vision-card {
  background: var(--gris-claro);
  border: 1px solid var(--gris-medio);
}
.mision-card h3, .vision-card h3 {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 10px;
  color: var(--naranja);
}
.vision-card h3 { color: var(--acero); }
.mision-card p { font-size: 0.9rem; line-height: 1.7; color: rgba(255,255,255,0.8); }
.vision-card p { font-size: 0.9rem; line-height: 1.7; color: var(--texto-cuerpo); }

/* ============ SERVICIOS ============ */
.servicios { background: var(--gris-claro); }
.servicios-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.servicio-card {
  background: var(--blanco);
  border-radius: var(--border-radius-lg);
  padding: 32px 24px;
  border: 1px solid var(--gris-medio);
  transition: transform var(--transition), box-shadow var(--transition);
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.servicio-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}
.servicio-card.featured {
  background: var(--azul-noche);
  border-color: var(--azul-noche);
  color: var(--blanco);
}
.servicio-badge {
  position: absolute;
  top: -12px;
  left: 20px;
  background: var(--naranja);
  color: var(--blanco);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 4px 12px;
  border-radius: 20px;
}
.servicio-icon { font-size: 2rem; }
.servicio-card h3 {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--azul-noche);
  line-height: 1.2;
}
.servicio-card.featured h3 { color: var(--blanco); }
.servicio-list {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.servicio-list li {
  font-size: 0.88rem;
  color: var(--gris-texto);
  padding-left: 16px;
  position: relative;
  line-height: 1.5;
}
.servicio-list li::before {
  content: '—';
  position: absolute;
  left: 0;
  color: var(--naranja);
  font-weight: 700;
}
.servicio-card.featured .servicio-list li { color: rgba(255,255,255,0.65); }

/* ============ PROYECTOS ============ */
.proyectos { background: var(--blanco); }
.proyectos-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  grid-template-rows: auto auto;
  gap: 24px;
}
.proyecto-card {
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  border: 1px solid var(--gris-medio);
  background: var(--blanco);
  transition: box-shadow var(--transition);
}
.proyecto-card:hover { box-shadow: var(--shadow-lg); }
.proyecto-card.grande { grid-row: span 2; display: flex; flex-direction: column; }
.proyecto-img { background: var(--gris-claro); display: flex; align-items: center; justify-content: center; }
.proyecto-img.placeholder-img {
  background: linear-gradient(135deg, var(--acero) 0%, var(--azul-noche) 100%);
  color: rgba(255,255,255,0.4);
  font-size: 0.9rem;
}
.proyecto-img.placeholder-img span { display: block; text-align: center; }
.proyecto-card.grande .proyecto-img { height: 280px; }
.proyecto-img.small { height: 160px; }
.proyecto-info { padding: 24px; flex: 1; }
.proyecto-tag {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--naranja);
  background: rgba(232,98,26,0.1);
  padding: 3px 10px;
  border-radius: 20px;
  margin-bottom: 10px;
}
.proyecto-info h3 {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--azul-noche);
  margin-bottom: 8px;
}
.proyecto-info p { font-size: 0.88rem; color: var(--gris-texto); line-height: 1.6; margin-bottom: 12px; }
.proyecto-meta span { font-size: 0.8rem; color: var(--acero-medio); font-weight: 500; }
.proyectos-cta {
  text-align: center;
  margin-top: 48px;
  padding: 48px;
  background: var(--gris-claro);
  border-radius: var(--border-radius-lg);
  border: 1px dashed var(--gris-medio);
}
.proyectos-cta p {
  font-family: var(--font-display);
  font-size: 1.4rem;
  font-weight: 600;
  color: var(--azul-noche);
  margin-bottom: 20px;
}

/* ============ SECTORES ============ */
.sectores { background: var(--azul-noche); }
.sectores .section-eyebrow { color: var(--naranja); }
.sectores .section-title { color: var(--blanco); }
.sectores-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}
.sector-item {
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--border-radius-lg);
  padding: 28px 20px;
  text-align: center;
  transition: background var(--transition), border-color var(--transition);
  cursor: default;
}
.sector-item:hover {
  background: rgba(232,98,26,0.12);
  border-color: rgba(232,98,26,0.4);
}
.sector-icon { font-size: 2rem; margin-bottom: 12px; }
.sector-item h4 {
  font-size: 0.9rem;
  font-weight: 600;
  color: rgba(255,255,255,0.85);
  line-height: 1.3;
}

/* ============ POR QUÉ ============ */
.porque { background: var(--gris-claro); }
.porque-inner {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 80px;
  align-items: center;
}
.porque-items { display: flex; flex-direction: column; gap: 0; }
.porque-item {
  display: flex;
  gap: 20px;
  align-items: flex-start;
  padding: 24px 0;
  border-bottom: 1px solid var(--gris-medio);
}
.porque-item:first-child { border-top: 1px solid var(--gris-medio); }
.porque-num {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 800;
  color: var(--naranja);
  opacity: 0.5;
  line-height: 1;
  min-width: 40px;
}
.porque-item h4 {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--azul-noche);
  margin-bottom: 6px;
}
.porque-item p { font-size: 0.88rem; color: var(--gris-texto); line-height: 1.65; }
.porque-text .section-title { margin-bottom: 20px; }
.porque-text .btn { margin-top: 12px; }

/* ============ CONTACTO ============ */
.contacto { background: var(--blanco); }
.contacto-grid {
  display: grid;
  grid-template-columns: 1fr 380px;
  gap: 48px;
  align-items: start;
}
.contacto-form { display: flex; flex-direction: column; gap: 20px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.form-group { display: flex; flex-direction: column; gap: 6px; }
.form-group label {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--azul-noche);
  letter-spacing: 0.02em;
}
.form-group input,
.form-group select,
.form-group textarea {
  padding: 12px 16px;
  border: 1.5px solid var(--gris-medio);
  border-radius: var(--border-radius);
  font-size: 0.92rem;
  color: var(--texto-principal);
  background: var(--blanco);
  transition: border-color var(--transition), box-shadow var(--transition);
  outline: none;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--acero);
  box-shadow: 0 0 0 3px rgba(30,58,95,0.12);
}
.form-group textarea { resize: vertical; min-height: 120px; }
.form-group input::placeholder,
.form-group textarea::placeholder { color: var(--gris-medio); }
.form-note { font-size: 0.78rem; color: var(--gris-texto); text-align: center; margin-top: -8px; }
.info-card {
  background: var(--gris-claro);
  border-radius: var(--border-radius-lg);
  padding: 32px;
  margin-bottom: 20px;
}
.info-card h3 {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--azul-noche);
  margin-bottom: 24px;
}
.info-item {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  padding: 12px 0;
  border-bottom: 1px solid var(--gris-medio);
}
.info-item:last-child { border-bottom: none; }
.info-icon { font-size: 1.2rem; min-width: 28px; }
.info-item strong { display: block; font-size: 0.8rem; font-weight: 600; color: var(--azul-noche); margin-bottom: 2px; }
.info-item p { font-size: 0.88rem; color: var(--gris-texto); line-height: 1.5; }
.info-item a { color: var(--acero); transition: color var(--transition); }
.info-item a:hover { color: var(--naranja); }
.whatsapp-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 16px;
  background: #25D366;
  color: var(--blanco);
  border-radius: var(--border-radius-lg);
  font-weight: 700;
  font-size: 0.95rem;
  transition: background var(--transition), transform var(--transition);
}
.whatsapp-btn:hover { background: #1DAE56; transform: translateY(-2px); }

/* ============ FOOTER ============ */
.footer { background: var(--azul-noche); color: rgba(255,255,255,0.7); }
.footer-inner {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 48px;
  padding: 64px 24px 48px;
  max-width: var(--container);
  margin: 0 auto;
}
.footer-brand p {
  font-size: 0.88rem;
  line-height: 1.7;
  margin-top: 12px;
  color: rgba(255,255,255,0.5);
  max-width: 260px;
}
.social-links {
  display: flex;
  gap: 12px;
  margin-top: 20px;
}
.social-links a {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 1px solid rgba(255,255,255,0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.78rem;
  font-weight: 700;
  color: rgba(255,255,255,0.6);
  transition: border-color var(--transition), color var(--transition);
}
.social-links a:hover { border-color: var(--naranja); color: var(--naranja); }
.footer-col h4 {
  font-family: var(--font-display);
  font-size: 0.9rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--blanco);
  margin-bottom: 20px;
}
.footer-col ul { display: flex; flex-direction: column; gap: 10px; }
.footer-col ul li a, .footer-col ul li {
  font-size: 0.85rem;
  color: rgba(255,255,255,0.5);
  transition: color var(--transition);
  line-height: 1.5;
}
.footer-col ul li a:hover { color: var(--naranja); }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
}
.footer-bottom .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 24px;
  padding-bottom: 24px;
}
.footer-bottom p { font-size: 0.78rem; color: rgba(255,255,255,0.35); }

/* ============ RESPONSIVE ============ */
@media (max-width: 1024px) {
  .servicios-grid { grid-template-columns: repeat(2, 1fr); }
  .nosotros-grid { grid-template-columns: 1fr; }
  .nosotros-aside { flex-direction: row; }
  .mision-card, .vision-card { flex: 1; }
  .porque-inner { grid-template-columns: 1fr; gap: 40px; }
  .footer-inner { grid-template-columns: 1fr 1fr; gap: 32px; }
  .sectores-grid { grid-template-columns: repeat(4, 1fr); }
}

@media (max-width: 768px) {
  :root { --section-gap: 64px; }
  .hamburger { display: flex; }
  .nav {
    display: none;
    position: fixed;
    inset: 82px 0 0 0;
    background: rgba(13,33,71,0.98);
    backdrop-filter: blur(8px);
    padding: 32px 24px;
    flex-direction: column;
  }
  .nav.open { display: flex; }
  .nav-list { flex-direction: column; gap: 24px; }
  .nav-link { font-size: 1.2rem; }
  .header-cta { display: none; }
  /* En móvil mostrar solo el ícono del logo */
  .logo-img--full { display: none; }
  .logo-img--icon { display: block; height: 52px; }
  .hero-title { font-size: 2.8rem; }
  .hero-stats { gap: 32px; }
  .valores-grid { grid-template-columns: 1fr; }
  .nosotros-aside { flex-direction: column; }
  .servicios-grid { grid-template-columns: 1fr; }
  .proyectos-grid { grid-template-columns: 1fr; }
  .proyecto-card.grande { grid-row: auto; }
  .sectores-grid { grid-template-columns: repeat(2, 1fr); }
  .contacto-grid { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .footer-inner { grid-template-columns: 1fr; gap: 32px; }
  .footer-bottom .container { flex-direction: column; gap: 8px; text-align: center; }
  .hero-actions { flex-direction: column; align-items: flex-start; }
}

@media (max-width: 480px) {
  .sectores-grid { grid-template-columns: repeat(2, 1fr); }
  .hero-title { font-size: 2.2rem; }
}

/* ============ SCROLL ANIMATIONS ============ */
.fade-in {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}
.fade-in.visible {
  opacity: 1;
  transform: none;
}

/* ============ FOCUS / A11Y ============ */
:focus-visible {
  outline: 2px solid var(--naranja);
  outline-offset: 3px;
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition-duration: 0.01ms !important; animation-duration: 0.01ms !important; }
  html { scroll-behavior: auto; }
}