/* =========================
   SERVITEC PMÁ – MAIN CSS
   Corporativo + Técnico Industrial
========================= */

/* ========= TIPOGRAFÍA ========= */
@import url('https://fonts.googleapis.com/css2?family=Montserrat:wght@300;400;600;700&display=swap');

:root{
  --morado:#5b2c83;
  --dorado:#d4af37;
  --verde:#1e7f43;
  --negro:#111111;
  --rojo:#a4161a;
  --blanco:#ffffff;
  --gris:#f4f6f8;
}

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

html{
  scroll-behavior:smooth;
  overflow-x:hidden;
}

body{
  font-family:'Montserrat',sans-serif;
  background:linear-gradient(135deg,var(--negro),var(--morado));
  color:#f2f2f2;
  transition:.4s;
}

/* ========= DARK MODE ========= */
body.dark{
  background:#0c0c0c;
  color:#ffffff;
}

/* ========= HEADER ========= */
header{
  padding:60px 8%;
  background:rgba(0,0,0,0.65);
  border-bottom:4px solid var(--dorado);
  display:flex;
  align-items:center;
  gap:25px;
}

header img{
  width:80px;
}

header h1{
  font-size:2rem;
  color:var(--dorado);
  font-weight:700;
}

header p{
  opacity:.85;
  font-weight:300;
}

/* ========= NAV ========= */
nav{
  display:flex;
  justify-content:center;
  gap:35px;
  padding:16px 0;
  background:rgba(0,0,0,0.75);
}

nav a{
  color:#ffffff;
  text-decoration:none;
  font-weight:600;
  position:relative;
  transition:.3s;
}

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

/* ========= SECCIONES ========= */
section{
  max-width:1100px;
  margin:80px auto;
  padding:0 20px;
}

section h2{
  font-size:1.8rem;
  margin-bottom:25px;
  color:var(--dorado);
  border-left:6px solid var(--rojo);
  padding-left:15px;
}

/* ========= BOX / CARDS ========= */
.box{
  background:rgba(0,0,0,0.6);
  border-radius:18px;
  padding:45px;
  margin-bottom:35px;
  box-shadow:0 12px 30px rgba(0,0,0,.45);
  line-height:1.8;
}

body.dark .box{
  background:#151515;
}

/* ========= GRID ========= */
.grid{
  display:grid;
  gap:30px;
}

.grid-2{
  grid-template-columns:repeat(auto-fit,minmax(280px,1fr));
}

/* ========= PILARES / SERVICIOS ========= */
.pilar{
  background:rgba(255,255,255,0.05);
  border:1px solid var(--dorado);
  border-radius:16px;
  padding:30px;
  text-align:center;
  transition:.3s;
}

.pilar:hover{
  transform:translateY(-5px);
  box-shadow:0 10px 25px rgba(0,0,0,.6);
}

.pilar h3{
  color:var(--verde);
  margin-bottom:12px;
}

/* ========= BOTONES ========= */
.btn{
  display:inline-block;
  padding:14px 32px;
  background:var(--dorado);
  color:var(--negro);
  text-decoration:none;
  border-radius:40px;
  font-weight:600;
  transition:.3s;
}

.btn:hover{
  transform:translateY(-2px);
  filter:brightness(1.05);
}

.btn-outline{
  border:2px solid var(--dorado);
  color:var(--dorado);
  background:transparent;
}

/* BOTÓN TEMA FIJO */
.theme-btn{
  position:fixed;
  top:20px;
  left:20px;
  z-index:1100;
  font-size:1.6rem;
  cursor:pointer;
}

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

.hero{
  min-height:100vh;
  display:flex;
  align-items:center;
  justify-content:center;
  text-align:center;
  padding:0 20px;
}

.hero-content{
  max-width:800px;
}

.hero h1{
  font-size:2.8rem;
  margin-bottom:20px;
}

.hero h1{
  font-size:2.5rem;
  color:var(--dorado);
}

.hero p{
  margin-top:20px;
  max-width:700px;
  margin-left:auto;
  margin-right:auto;
  opacity:.9;
}

/* ========= FOOTER ========= */
footer{
  text-align:center;
  padding:40px 20px;
  background:rgba(0,0,0,0.85);
  font-size:.9rem;
  border-top:3px solid var(--verde);
}

/* ========= MENU LATERAL ========= */
.menu{
  position:fixed;
  inset:0;
  width:100%;
  height:100dvh;
  background:linear-gradient(135deg,var(--negro),var(--morado));
  padding:80px 30px;
  display:flex;
  flex-direction:column;
  transform:translateX(100%);
  transition:transform .35s ease;
  z-index:1000;
  overflow-y:auto;
}

.menu.open{
  transform:translateX(0);
}

.menu.open{
  right:0;
}

/* BOTÓN MENÚ FIJO */
.menu-btn{
  position:fixed;
  top:20px;
  right:20px;
  z-index:1200;
  font-size:1.8rem;
  cursor:pointer;
  color:#fff;
}

/* BLOQUEO DE SCROLL SOLO EN MÓVIL */
@media(max-width:1023px){
  body.menu-open{
    overflow:hidden;
    height:100dvh;
    touch-action:none;
  }
}

/* OCULTAR BOTONES CUANDO EL MENÚ ESTÁ ABIERTO */
body.menu-open .menu-btn,
body.menu-open .theme-btn{
  opacity:0;
  pointer-events:none;
  transition:opacity .3s ease;
}

.menu a{
  display:block;
  color:#fff;
  text-decoration:none;
  margin:20px 0;
  font-weight:500;
}

.submenu-toggle{
  color:#fff;
  font-weight:600;
  cursor:pointer;
  margin:18px 0;
}

.menu-btn,
.theme-btn{
  transition:opacity .3s ease;
}

/* ========= ANIMACIONES ========= */
.fade{
  opacity:0;
  transform:translateY(40px);
  transition:all .8s ease;
}

.fade.show{
  opacity:1;
  transform:none;
}

/* ========= RESPONSIVE ========= */
@media(min-width:1024px){

  .menu{
    width:380px;
    height:100vh;
    inset:auto 0 0 auto;   /* solo derecha */
    top:0;
    right:0;
    transform:translateX(100%);
    box-shadow:-10px 0 40px rgba(0,0,0,.6);
  }

  .menu.open{
    transform:translateX(0);
  }

}

@media(max-width:768px){

  header{
    flex-direction:column;
    text-align:center;
  }

  nav{
    flex-wrap:wrap;
    gap:20px;
  }

  .hero{
    padding:80px 20px;
  }

  section{
    margin:50px auto;
  }

  .box{
    padding:28px;
  }

}