* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: "Segoe UI", sans-serif;
  background: #fff;
}

/* ===== NAVBAR ===== */
/* =========================
   NAVBAR (DESKTOP BASE)
========================= */

.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  padding: 24px 80px;

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

  color: #fff;
  background: transparent;
  z-index: 9999;
}

.nav-container {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

/* ===== Logo ===== */

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 14px;
  letter-spacing: .12em;
}

.logo img {
  height: 42px;
}

/* ===== Desktop Nav ===== */

.navbar nav {
  display: flex;
  align-items: center;
  gap: 22px;
}

.navbar nav a {
  color: #fff;
  text-decoration: none;
  font-weight: 300;
  font-size: 14px;
  opacity: .9;
  transition: opacity .2s ease;
}

.navbar nav a:hover {
  opacity: 1;
}


/* =========================
   DROPDOWN SERVICIOS DESKTOP
========================= */

.nav-dropdown {
  position: relative;
  display: inline-flex;
  align-items: center;
}

.dropbtn {
  background: transparent;
  border: 0;
  color: #fff;
  font: inherit;
  font-weight: 300;
  cursor: pointer;
  padding: 0;

  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.dropbtn .caret {
  width: 0;
  height: 0;
  border-left: 5px solid transparent;
  border-right: 5px solid transparent;
  border-top: 6px solid #fff;
  opacity: .85;
  transform: translateY(1px);
}

/* menú */

.dropdown-menu {
  position: absolute;
  top: calc(100% + 14px);
  left: 0;
  min-width: 280px;

  background: #1b1b1b;
  border: 1px solid rgba(255,255,255,.06);
  border-radius: 10px;
  padding: 10px 0;

  box-shadow: 0 18px 45px rgba(0,0,0,.45);
  z-index: 9999;

  display: none;
}

.dropdown-menu a {
  display: block;
  padding: 10px 16px;
  font-size: 13px;
  color: rgba(255,255,255,.86);
  text-decoration: none;
  line-height: 1.3;
  white-space: nowrap;
}

.dropdown-menu a:hover {
  background: #084883;
  color: #fff;
}

/* hover */

.nav-dropdown:hover .dropdown-menu {
  display: block;
}

.nav-dropdown::after {
  content: "";
  position: absolute;
  left: 0;
  top: 100%;
  width: 100%;
  height: 14px;
}


/* =========================
   BURGER (SOLO MOBILE)
========================= */

.burger {
  display: none;
  width: 42px;
  height: 42px;
  border: none;
  background: transparent;
  cursor: pointer;

  position: relative;
  z-index: 10001;
}

.burger span {
  position: absolute;
  width: 26px;
  height: 2px;
  background: #fff;
  transition: .3s ease;
}

.burger span:nth-child(1) { transform: translateY(-8px); }
.burger span:nth-child(2) { transform: translateY(0); }
.burger span:nth-child(3) { transform: translateY(8px); }

.burger.active span:nth-child(1) { transform: rotate(45deg); }
.burger.active span:nth-child(2) { opacity: 0; }
.burger.active span:nth-child(3) { transform: rotate(-45deg); }


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

.mobile-menu {
  position: fixed;
  inset: 0;
  background: rgba(8, 72, 131, 0.55);
  backdrop-filter: blur(4px);
  z-index: 10000;

  opacity: 0;
  pointer-events: none;
  transition: .3s ease;
}

.mobile-menu.active {
  opacity: 1;
  pointer-events: auto;
}


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

.mobile-menu-panel {
  position: absolute;
  left: -100%;
  top: 0;
  width: 86%;
  max-width: 360px;
  height: 100%;

  background: #0a3f73;
  padding: 22px;

  transition: .35s ease;
  display: flex;
  flex-direction: column;
}

.mobile-menu.active .mobile-menu-panel {
  left: 0;
}


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

.mobile-menu-header {
  display: flex;
  justify-content: flex-end;
  margin-bottom: 8px;
}

.close-menu {
  background: rgba(255,255,255,.12);
  border: none;
  color: #fff;
  width: 42px;
  height: 42px;
  border-radius: 10px;
  font-size: 18px;
  cursor: pointer;
}


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

.mobile-nav {
  display: flex;
  flex-direction: column;
}

.mobile-nav a,
.mobile-dropbtn {
  color: #fff;
  text-decoration: none;
  padding: 14px 0;
  border-bottom: 1px solid rgba(255,255,255,.18);
  font-size: .95rem;
  background: none;
  border: none;
  text-align: left;
  cursor: pointer;
}


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

.mobile-dropdown span {
  float: right;
  transition: .3s;
}

.mobile-dropdown.active span {
  transform: rotate(180deg);
}

.mobile-submenu {
  display: none;
  flex-direction: column;
  padding-left: 12px;
  margin-bottom: 6px;
}

.mobile-dropdown.active .mobile-submenu {
  display: flex;
}

.mobile-submenu a {
  font-size: .88rem;
  opacity: .9;
  padding: 10px 0;
}

/* ===== HIDE NAVBAR ANIMATION ===== */

.navbar {
  transition: transform .35s ease, background .3s ease;
}

.navbar.navbar-hide {
  transform: translateY(-110%);
}


/* =========================
   RESPONSIVE
========================= */

@media (max-width: 900px) {

  .navbar {
    padding: 18px 22px;
  }

  .navbar nav {
    display: none;
  }

  .burger {
    display: block;
  }

  .logo span {
    display: none;
  }

}

.no-scroll {
  overflow: hidden;
}


.logo {
  display: flex;
  gap: 10px;
  align-items: center;
}

.logo img { width: 48px; }

.navbar nav a {
  color: white;
  margin-left: 25px;
  text-decoration: none;
}

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

.service-hero {
  height: 60vh;
  background: url("https://img.freepik.com/foto-gratis/escena-monocromatica-que-representa-vida-trabajadores-sitio-industria-construccion_23-2151431492.jpg?t=st=1768588149~exp=1768591749~hmac=e1aa310823e4a2b17180079ecf08a1651504aacc3ea8466b62adfaad6de78c36&w=1480") center/cover no-repeat;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  color: white;
  position: relative;
  text-align: center;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,.55);
}

.service-hero h1,
.service-hero span {
  position: relative;
  z-index: 2;
}

.service-hero h1 {
  font-size: 3rem;
}

/* ===== LAYOUT ===== */

.service-layout {
  display: grid;
  grid-template-columns: 320px 1fr;
  max-width: 1300px;
  margin: 100px auto;
  gap: 60px;
  padding: 0 6%;
}

/* ===== MENU ===== */

.service-menu{
  background:#084883;
  padding:30px 20px;
  display:flex;
  flex-direction:column;
  gap:6px;
}

.service-menu a{
  background:transparent;
  border:none;
  color:white;
  text-align:left;
  padding:14px 16px;
  font-size:.85rem;
  letter-spacing:.5px;
  cursor:pointer;
  transition:.25s;
  border-radius:4px;
  text-decoration:none;
  display:block;
}

.service-menu a:hover{
  background:rgba(255,255,255,.12);
}

.service-menu a.active{
  background:rgba(255,255,255,.15);
  border:1px solid rgba(255,255,255,.7);
}


/* ===== CONTENT ===== */

.service-content small {
  color: #777;
}

.service-content h2 {
  margin: 12px 0 15px;
  font-size: 2.1rem;
}

.service-content p {
  max-width: 650px;
  line-height: 1.6;
}

.service-content h3 {
  margin-top: 35px;
}

.service-content ul {
  padding-left: 20px;
}

.service-content li {
  margin-bottom: 6px;
}


@media (max-width: 768px){

  /* ===== NAVBAR ===== */
  .navbar{
    padding:14px 5%;
  }

  .nav-container{
    flex-direction:row;
  }

  .logo span{
    font-size:.7rem;
    line-height:1.1;
  }

  nav{
    display:none; /* si luego quieres hamburguesa lo vemos */
  }

  /* ===== HERO ===== */
  .service-hero{
    height:45vh;
    padding:0 8%;
    text-align:center;
  }

  .service-hero h1{
    font-size:1.8rem;
  }

  .service-hero span{
    font-size:.7rem;
  }

  /* ===== LAYOUT ===== */
  .service-layout{
    grid-template-columns:1fr;
    padding:60px 6%;
  }

  /* ===== MENU ===== */
  .service-menu{
    width:100%;
    padding:10px;
    display:flex;
    flex-direction:row;
    overflow-x:auto;
    gap:10px;
  }

  .service-menu a{
    white-space:nowrap;
    font-size:.7rem;
    padding:10px 14px;
    border-radius:6px;
    border:1px solid rgba(255,255,255,.4);
    flex:0 0 auto;
  }

  /* ===== CONTENT ===== */
  .service-content{
    padding:40px 0 0;
  }

  .service-content h2{
    font-size:1.6rem;
  }

  .service-content h3{
    font-size:1.2rem;
  }

  .service-content p{
    font-size:.9rem;
  }

  .service-content ul{
    padding-left:18px;
  }
}

@media (max-width:480px){

  .service-hero h1{
    font-size:1.5rem;
  }

  .service-content h2{
    font-size:1.4rem;
  }

  .service-menu a{
    font-size:.65rem;
    padding:8px 12px;
  }
}

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

.site-footer {
  background: #121212;
  color: #cccccc;
  padding-top: 80px;
  font-family: "Poppins", sans-serif;
}

.footer-container {
  max-width: 1200px;
  margin: auto;
  padding: 0 8%;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: start;
}

/* BRAND */

.footer-brand img {
  width: 160px;
  margin-bottom: 18px;
}

.brand-tagline {
  font-size: 0.9rem;
  color: rgba(255,255,255,0.6);
}

/* CONTACT */

.footer-contact h4 {
  font-size: 1rem;
  margin-bottom: 22px;
  color: white;
}

.contact-item {
  display: flex;
  gap: 12px;
  margin-bottom: 18px;
  font-size: 0.9rem;
  line-height: 1.5;
}

.contact-item span {
  font-size: 1rem;
}

/* BOTTOM */

.footer-bottom {
  margin-top: 70px;
  padding: 20px 8%;
  border-top: 1px solid rgba(255,255,255,0.08);
  text-align: center;
  font-size: 0.75rem;
  color: rgba(255,255,255,0.4);
}

/* RESPONSIVE */

@media (max-width: 850px) {
  .footer-container {
    grid-template-columns: 1fr;
    gap: 50px;
    text-align: center;
  }

  .contact-item {
    justify-content: center;
  }
}