/* =========================================================
   OTROS PROYECTOS – LISTADO
   Fondos tipo IMAGEN (sin fotos reales)
========================================================= */

/* ===============================
   CONTENEDOR ESPECIAL (1700px)
================================ */
.otros-container-1700{
  max-width: 1700px;
  width: 100%;
  margin: 0 auto;
  padding: 0 24px;
}

/* ===============================
   SECCIÓN GENERAL
================================ */
.otros-wrap{
  padding: 90px 0;
  background: linear-gradient(rgba(245,247,250,.95), rgba(255,255,255,.98));
}

/* ===============================
   TÍTULOS
================================ */
.otros-title{
  text-align: center;
  font-size: 2.5rem;
  margin-bottom: 12px;
  color: #111;
}
.otros-subtitle{
  text-align: center;
  color: #666;
  max-width: 900px;
  margin: 0 auto 45px;
  font-size: 1rem;
}

/* ===============================
   GRID
================================ */
.otros-grid{
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 26px;
}
@media (max-width:1300px){
  .otros-grid{ grid-template-columns: repeat(2,1fr); }
}
@media (max-width:720px){
  .otros-grid{ grid-template-columns: 1fr; }
}

/* ===============================
   HERO
================================ */
.otros-hero{
  position: relative;
  min-height: 38vh;
  display:flex;
  align-items:center;
  justify-content:center;
  text-align:center;
  background:#0b0f1a;
  overflow:hidden;
}
.otros-hero-overlay{
  position:absolute;
  inset:0;
  background:linear-gradient(180deg, rgba(0,0,0,.6), rgba(0,0,0,.3));
}
.otros-hero-content{
  position:relative;
  z-index:2;
  color:#fff;
  padding:60px 18px;
  max-width:900px;
}
.otros-hero-content h1{
  font-size:clamp(2rem,4vw,3.2rem);
  margin:0 0 10px;
}
.otros-hero-content p{
  margin:0;
  opacity:.9;
}

/* ===============================
   CARD BASE
================================ */
.otros-card{
  position: relative;
  overflow: hidden;
  border-radius: 18px;
  padding: 26px;
  display:flex;
  flex-direction:column;

  border:1px solid rgba(0,0,0,0.06);
  box-shadow:0 12px 30px rgba(0,0,0,0.08);
  transition:transform .25s ease, box-shadow .25s ease;

  /* animación */
  opacity:0;
  transform:translateY(30px);
  animation:otrosFade .6s ease forwards;

  /* comportamiento tipo imagen */
  background-size:cover;
  background-position:center;
  background-repeat:no-repeat;
}
@keyframes otrosFade{
  to{ opacity:1; transform:translateY(0); }
}
.otros-card:hover{
  transform:translateY(-6px);
  box-shadow:0 22px 45px rgba(0,0,0,0.14);
}

/* overlay para lectura (NO mata el fondo) */
.otros-card::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(180deg, rgba(255,255,255,.55), rgba(255,255,255,.78));
  z-index:0;
}
.otros-card > *{
  position:relative;
  z-index:1;
}

/* Ribbon */
.otros-card::before{
  content:"ELABORADO";
  position:absolute;
  top:14px;
  right:-36px;
  transform:rotate(45deg);
  background:#1cd70b;
  color:#fff;
  font-size:.7rem;
  padding:4px 42px;
  font-weight:700;
  letter-spacing:.4px;
  opacity:.95;
  z-index:2;
}

/* ===============================
   TEXTO
================================ */
.otros-top{ margin-bottom:14px; }
.otros-serie{
  font-weight:800;
  font-size:1.05rem;
  color:#111;
}
.otros-fecha,
.otros-cliente{
  font-size:.95rem;
  color:#222;
  margin-bottom:6px;
}
.otros-desc{
  font-size:.95rem;
  color:#333;
  line-height:1.6;
  margin-top:10px;
}
.otros-cat{
  align-self:flex-start;
  margin-top:16px;
  padding:6px 14px;
  border-radius:999px;
  font-size:.8rem;
  font-weight:700;
  background:rgba(0,0,0,.12);
  color:#111;
}

/* =========================================================
   FONDOS TIPO IMAGEN (SIN FOTOS)
========================================================= */

/* EXPEDIENTE TÉCNICO – plano azul */
.cat-expediente-tecnico{
  background-image:
    radial-gradient(circle at 25% 25%, rgba(80,140,255,.85), transparent 55%),
    radial-gradient(circle at 80% 35%, rgba(0,0,0,.45), transparent 60%),
    linear-gradient(90deg, rgba(255,255,255,.25) 1px, transparent 1px),
    linear-gradient(rgba(255,255,255,.25) 1px, transparent 1px),
    repeating-linear-gradient(45deg, rgba(0,0,0,.20) 0 2px, transparent 2px 16px);
  background-size:auto,auto,32px 32px,32px 32px,auto;
}

/* PREINVERSIÓN – documentación verde */
.cat-preinversion-ficha-tecnica{
  background-image:
    radial-gradient(circle at 22% 25%, rgba(0,220,120,.85), transparent 55%),
    radial-gradient(circle at 85% 30%, rgba(0,0,0,.45), transparent 60%),
    repeating-linear-gradient(0deg, rgba(0,0,0,.22) 0 2px, transparent 2px 20px),
    repeating-linear-gradient(90deg, rgba(255,255,255,.18) 0 1px, transparent 1px 28px);
}

/* AMBIENTAL – territorio/vegetación */
.cat-ambiental{
  background-image:
    radial-gradient(circle at 20% 25%, rgba(0,200,100,.9), transparent 55%),
    radial-gradient(circle at 75% 35%, rgba(0,120,70,.85), transparent 60%),
    radial-gradient(circle at 50% 85%, rgba(0,0,0,.5), transparent 70%),
    repeating-radial-gradient(circle at 30% 40%, rgba(0,0,0,.18) 0 1px, transparent 1px 18px);
}

/* TOPOGRAFÍA – curvas de nivel */
.cat-topografia-geotecnia{
  background-image:
    radial-gradient(circle at 22% 30%, rgba(200,140,70,.9), transparent 55%),
    radial-gradient(circle at 80% 35%, rgba(0,0,0,.45), transparent 60%),
    repeating-radial-gradient(circle at 50% 50%, rgba(255,255,255,.35) 0 1px, transparent 1px 14px),
    repeating-linear-gradient(135deg, rgba(0,0,0,.18) 0 2px, transparent 2px 20px);
}

/* PASE AÉREO – estructura/acero */
.cat-pase-aereo-infraestructura{
  background-image:
    radial-gradient(circle at 25% 25%, rgba(0,140,255,.9), transparent 55%),
    radial-gradient(circle at 85% 30%, rgba(0,0,0,.5), transparent 60%),
    repeating-linear-gradient(90deg, rgba(255,255,255,.28) 0 3px, transparent 3px 22px),
    repeating-linear-gradient(0deg, rgba(0,0,0,.18) 0 2px, transparent 2px 18px);
}

/* ALQUILER EQUIPOS – instrumentación */
.cat-alquiler-equipos-topograficos{
  background-image:
    radial-gradient(circle at 22% 25%, rgba(160,90,255,.9), transparent 55%),
    radial-gradient(circle at 85% 32%, rgba(0,0,0,.45), transparent 60%),
    repeating-linear-gradient(45deg, rgba(255,255,255,.28) 0 2px, transparent 2px 16px),
    repeating-linear-gradient(-45deg, rgba(0,0,0,.18) 0 2px, transparent 2px 20px);
}

/* ===============================
   BASE (SIEMPRE)
================================ */

/* Evita franja blanca / overflow horizontal en móvil */
html, body{
  max-width: 100%;
  overflow-x: hidden;
}

.otros-cliente{
  font-size: 1.15rem;
  font-weight: 800;
  color: #111;
  margin-bottom: 10px;
}

.card-bg-icon{
  position: absolute;
  right: -20px;
  bottom: -20px;
  font-size: 150px;
  opacity: 0.12;
  color: #000;
  z-index: 0;
  pointer-events: none;
}

.otros-card > *{
  position: relative;
  z-index: 1;
}

/* ===============================
   MOBILE (SOLO UNO)
================================ */
@media (max-width: 480px){

  .otros-subtitle{ font-size: .95rem; }

  /* Card */
  .otros-card{
    padding: 20px 18px;
    max-width: 270px;
  }

  /* Ribbon */
  .otros-card::before{
    right: -22px;
    padding: 3px 24px;
    font-size: 0.6rem;
  }

  /* Icono de fondo */
  .card-bg-icon{
    font-size: 80px;
    right: -8px;
    bottom: -8px;
    opacity: 0.1;
  }

  /* Texto cliente */
  .otros-cliente{
    font-size: 1.05rem;
    line-height: 1.3;
  }

  /* Grid sin overflow */
  .otros-grid{
    padding: 0 12px;
  }
}