/* =========================================================
   PETRUS - STYLES.CSS (Versión final unificada)
   Compatible con index.html, servicios.html, proyectos.html, contacto.html
========================================================= */

/* --------------------
   VARIABLES
-------------------- */
:root {
  --dark: #0A1A2F;
  --primary: #0A1A2F;
  --accent: #F2A007;
  --muted: #6B7280;
  --bg: #FFFFFF;
  --surface: #F7F8FA;
  --text: #222222;

  --shadow-soft: 0 8px 28px rgba(10,26,47,0.08);
  --shadow-medium: 0 14px 40px rgba(10,26,47,0.12);
  --transition: 300ms cubic-bezier(.22,.9,.25,1);
  --container-max: 1250px;
  --gutter: 6%;
  --header-height: 82px;
}

/* --------------------
   RESET & BASE
-------------------- */
*{box-sizing:border-box;margin:0;padding:0;}
html, body {height:100%;}
body {
  font-family: "Montserrat", "Roboto", Arial, sans-serif;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  line-height:1.6;
  -webkit-font-feature-settings: "ss01" on;
  padding-top: var(--header-height);
}

.container {
  width: min(var(--container-max), 100%);
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 1rem;
}

.center { text-align:center; }

h1,h2,h3,h4 { color: var(--primary); margin:0 0 .6rem 0; }
p { margin-bottom:1rem; color:#444; }
ul, ol { margin: .6rem 0 1rem 1.25rem; }

/* --------------------
   HEADER
-------------------- */
.header {
  position: fixed;
  top:0; left:0; right:0;
  height: var(--header-height);
  display:flex;
  align-items:center;
  z-index: 9999;
  background: linear-gradient(180deg, rgba(10,26,47,0.98), rgba(10,26,47,0.94));
  box-shadow: var(--shadow-soft);
  transition: box-shadow var(--transition), backdrop-filter var(--transition), height var(--transition);
}
.header.header-scrolled {
  backdrop-filter: blur(6px);
  box-shadow: 0 18px 50px rgba(10,26,47,0.14);
  height: 70px;
}

.header-container {
  width: min(var(--container-max), 88%);
  margin: 0 auto;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:1rem;
  padding:0 0.5rem;
}

.logo {
  color: var(--accent);
  font-weight:800;
  font-size:1.35rem;
  letter-spacing:0.6px;
}

.nav { display:flex; align-items:center; gap:1rem; }
.nav ul { display:flex; gap:0.6rem; align-items:center; margin:0; padding:0; }
.nav ul li { list-style:none; }
.nav a {
  color:#fff;
  display:inline-block;
  padding:10px 12px;
  border-radius:8px;
  font-weight:600;
  transition: color var(--transition), background var(--transition), transform var(--transition);
}
.nav a:hover { color:var(--accent); background: rgba(255,255,255,0.03); transform: translateY(-1px);}
.nav a.active { color:var(--accent); background: rgba(255,255,255,0.04); }

.nav .btn-nav { background: var(--accent); color: var(--dark); padding: 10px 18px; border-radius:10px; font-weight:700; }
.nav .btn-nav:hover { background:#ffbe45; }

.menu-toggle {
  display:none;
  font-size:1.6rem;
  color:#fff;
  background:transparent;
  border:0;
  cursor:pointer;
}

/* --------------------
   HERO (todas las páginas)
-------------------- */
.hero, .hero-pages {
  display:flex;
  align-items:center;
  justify-content:center;
  text-align:center;
  padding-top: calc(var(--header-height) + 48px);
  padding-bottom: 4.5rem;
  color:#fff;
  background: linear-gradient(180deg, rgba(10,26,47,0.9), rgba(10,26,47,0.9));
}

.hero h1, .hero-pages h1 {
  font-size:3rem;
  font-weight:800;
  line-height:1.05;
  margin-bottom:.6rem;
}
.hero p, .hero-pages p {
  font-size:1.05rem;
  color: rgba(255,255,255,0.95);
  margin-bottom:1.4rem;
}
.hero-home {
  position: relative;
  height: 100vh; /* Ocupa toda la altura de la ventana */
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

/* --------------------
   BOTONES
-------------------- */
.btn-primary {
  display:inline-block;
  background:var(--accent);
  color:var(--dark);
  padding: 12px 22px;
  border-radius:10px;
  font-weight:800;
  transition: transform var(--transition), box-shadow var(--transition);
}
.btn-primary:hover { transform: translateY(-4px); box-shadow: var(--shadow-medium); }

/* --------------------
   SECCIONES
-------------------- */
.section { padding: 5.5rem 6%; }
.section.alt { background: var(--surface); }

.section-title {
  font-size: 2.2rem;
  font-weight:700;
  text-align:center;
  margin-bottom:.6rem;
}
.section-subtitle {
  max-width:760px;
  margin:0 auto 2.4rem;
  text-align:center;
  color: var(--muted);
  font-size:1.02rem;
}

/* --------------------
   SERVICES
-------------------- */
.services-grid {
  display:grid;
  grid-template-columns: repeat(auto-fit, minmax(300px,1fr));
  gap:2.4rem;
}

.services-list { display:flex; flex-direction:column; gap:1.25rem; }
.service-item {
  background:#fff;
  padding:22px;
  border-radius:12px;
  box-shadow:var(--shadow-soft);
  border-left:4px solid var(--accent);
}
.service-item h3 { margin-bottom:6px; font-size:1.05rem; color:var(--primary);}
.service-item p { color:#444; }

.service-card {
  background:#fff;
  padding:28px;
  border-radius:14px;
  box-shadow:var(--shadow-soft);
  border-bottom:4px solid rgba(0,0,0,0.03);
  transition: transform var(--transition), box-shadow var(--transition);
}
.service-card:hover { transform:translateY(-10px); box-shadow:var(--shadow-medium);}
.service-card h3 { font-size:1.05rem; margin-bottom:.45rem; color:var(--primary);}
.service-card p { color:#444; }

/* --------------------
   ABOUT GRID (index)
-------------------- */
.about-grid {
  display:grid;
  grid-template-columns: repeat(auto-fit, minmax(180px,1fr));
  gap:1.4rem;
  align-items:stretch;
  margin-top:1.5rem;
}
.about-item{
  background:#fff;
  padding:18px;
  border-radius:10px;
  text-align:center;
  box-shadow:var(--shadow-soft);
  font-weight:700;
  color:var(--primary);
}

/* --------------------
   PROJECTS
-------------------- */
.projects-grid {
  display:grid;
  grid-template-columns: repeat(auto-fit, minmax(320px,1fr));
  gap:2.2rem;
}
.project-card {
  border-radius:12px;
  overflow:hidden;
  background:#fff;
  box-shadow:var(--shadow-soft);
  transition: transform var(--transition), box-shadow var(--transition);
  display:flex;
  flex-direction:column;
}
.project-card:hover { transform:translateY(-10px); box-shadow:var(--shadow-medium);}
.project-image { height:240px; background-size:cover; background-position:center; flex-shrink:0; }
.project-content { padding:18px 20px; flex:1; }
.project-content h3 { margin-bottom:8px; color:var(--primary); }
.project-content p { color:#444; line-height:1.5; }

/* --------------------
   CONTACT
-------------------- */
.contact-container {
  display:grid;
  grid-template-columns: 1fr 1fr;
  gap:2rem;
  align-items:start;
}
.contact-info, .contact-form {
  background:#fff;
  padding:22px;
  border-radius:12px;
  box-shadow:var(--shadow-soft);
}
.contact-form .form-group { margin-bottom:1rem; }
.contact-form input, .contact-form textarea {
  width:100%;
  padding:12px 14px;
  border-radius:8px;
  border:1px solid #e2e8f0;
  font-size:0.95rem;
}

/* MAP */
.map-box { height:420px; border-radius:12px; overflow:hidden; box-shadow:var(--shadow-soft); }

/* CTA */
.cta {
  background: linear-gradient(90deg, rgba(10,26,47,0.98), rgba(10,26,47,0.9));
  color:#fff;
  padding:3.5rem 6%;
  border-radius:12px;
  text-align:center;
  margin:2.5rem 6%;
  box-shadow:var(--shadow-soft);
}

/* FOOTER */
.footer { background:var(--dark); color:#fff; padding:2.2rem 6%; text-align:center; margin-top:3rem; }

/* --------------------
   RESPONSIVE
-------------------- */
@media (max-width:1100px){
  :root{ --gutter: 8%; }
  .hero h1 { font-size:2.4rem; }
  .hero { padding-top: calc(var(--header-height)+34px); padding-bottom:56px; }
}

@media (max-width:900px){
  .menu-toggle{ display:block; }
  .nav ul{ display:none; position:absolute; top: var(--header-height); left:0; right:0; background:var(--dark); flex-direction:column; padding:1rem 6%; gap:.6rem; z-index:9999; }
  .nav ul.show-menu{ display:flex; }
  .header-container{ padding-left:6%; padding-right:6%; }
  .container{ width: calc(100% - 12%); }
  .contact-container { grid-template-columns:1fr; }
  .projects-grid { grid-template-columns:1fr; }
  .services-grid { grid-template-columns:1fr; }
  .about-grid { grid-template-columns: repeat(2,1fr); }
  .hero h1 { font-size:1.9rem; }
  body { padding-top: 70px; }
}

@media (max-width:600px){
  .header.header-scrolled{ height:64px; }
  .hero { padding-top: calc(var(--header-height)+20px); padding-bottom:42px; }
  .about-grid { grid-template-columns:1fr; }
  .section { padding:3rem 6%; }
  .cta { margin:1.5rem 6%; padding:2rem 6%; }
}
/* --------------------
   PRELOADER MODERNO
-------------------- */
#preloader{
  position: fixed;
  inset:0;
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  background: var(--dark);
  z-index:99999;
}

#preloader.hide-preloader{
  opacity:0;
  visibility:hidden;
  pointer-events:none;
}

/* Engranaje SVG animado */
.gear-container {
  width: 80px;
  height: 80px;
  margin-bottom: 1.5rem;
}

.gear {
  animation: rotateGear 1.5s linear infinite;
}

@keyframes rotateGear {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

/* Barra de progreso */
.progress-bar {
  width: 240px;
  height: 10px;
  border-radius: 5px;
  background: rgba(255,255,255,0.2);
  margin-bottom: 1rem;
  overflow:hidden;
}
.progress-fill {
  width:0%;
  height:100%;
  background: var(--accent);
  border-radius:5px;
  transition: width 0.3s ease;
}

#preloader p {
  color:#fff;
  font-size:0.95rem;
  letter-spacing:1px;
}