/* ===== VARIABLES ===== */
:root {
  --blue-dark: #2B6B9A;
  --blue-light: #5BAEC9;
  --orange: #C87040;
  --charcoal: #3D3D3D;
  --gray-dark: #555;
  --gray-mid: #888;
  --gray-light: #f5f6f7;
  --white: #ffffff;
  --shadow: 0 4px 20px rgba(0,0,0,0.10);
  --shadow-hover: 0 8px 30px rgba(0,0,0,0.16);
  --radius: 8px;
  --transition: 0.3s ease;
  --nav-height: 72px;
}

/* ===== RESET & BASE ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: 'Inter', 'Segoe UI', Arial, sans-serif;
  color: var(--charcoal);
  background: var(--white);
  line-height: 1.6;
}
img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; }

/* ===== TYPOGRAPHY ===== */
h1, h2, h3, h4 { line-height: 1.2; font-weight: 700; }
h1 { font-size: clamp(2rem, 5vw, 3.2rem); }
h2 { font-size: clamp(1.6rem, 3vw, 2.2rem); }
h3 { font-size: 1.15rem; }
p { color: var(--gray-dark); }

.section-header {
  text-align: center;
  margin-bottom: 3rem;
}
.section-header h2 { color: var(--charcoal); margin-bottom: 0.75rem; }
.section-header p { color: var(--gray-mid); font-size: 1.05rem; max-width: 600px; margin: 0 auto; }
.section-divider {
  width: 56px; height: 4px;
  background: linear-gradient(90deg, var(--blue-dark), var(--orange));
  border-radius: 2px;
  margin: 0.75rem auto 0;
}

/* ===== LAYOUT ===== */
.container { max-width: 1160px; margin: 0 auto; padding: 0 1.5rem; }
section { padding: 80px 0; }
section:nth-child(even) { background: var(--gray-light); }

/* ===== BUTTONS ===== */
.btn {
  display: inline-flex; align-items: center; gap: 0.5rem;
  padding: 0.75rem 1.75rem;
  border-radius: var(--radius);
  font-weight: 600; font-size: 0.95rem;
  cursor: pointer; border: 2px solid transparent;
  transition: var(--transition);
}
.btn-primary {
  background: var(--orange);
  color: var(--white);
  border-color: var(--orange);
}
.btn-primary:hover { background: #b5623a; border-color: #b5623a; transform: translateY(-2px); }
.btn-outline {
  background: transparent;
  color: var(--white);
  border-color: rgba(255,255,255,0.7);
}
.btn-outline:hover { background: rgba(255,255,255,0.15); transform: translateY(-2px); }

/* ===== NAVBAR ===== */
#navbar {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  height: var(--nav-height);
  background: rgba(255,255,255,0.97);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid rgba(0,0,0,0.08);
  transition: box-shadow var(--transition);
}
#navbar.scrolled { box-shadow: var(--shadow); }
.nav-inner {
  display: flex; align-items: center; justify-content: space-between;
  height: var(--nav-height);
}
.nav-logo img { height: 44px; width: auto; }
.nav-logo .logo-text {
  display: flex; flex-direction: column;
  line-height: 1.1;
}
.nav-logo .logo-text .name {
  font-size: 1.25rem; font-weight: 800; color: var(--charcoal); letter-spacing: 0.04em;
}
.nav-logo .logo-text .sub {
  font-size: 0.62rem; font-weight: 600; color: var(--orange);
  letter-spacing: 0.18em; text-transform: uppercase;
}
.nav-links {
  display: flex; gap: 0.25rem; list-style: none; align-items: center;
}
.nav-links a {
  padding: 0.5rem 0.9rem;
  border-radius: var(--radius);
  font-size: 0.9rem; font-weight: 500;
  color: var(--gray-dark);
  transition: var(--transition);
}
.nav-links a:hover, .nav-links a.active { color: var(--blue-dark); background: rgba(43,107,154,0.08); }
.nav-cta {
  background: var(--orange) !important;
  color: var(--white) !important;
  font-weight: 600 !important;
  padding: 0.5rem 1.2rem !important;
}
.nav-cta:hover { background: #b5623a !important; }

/* Hamburger */
.nav-hamburger {
  display: none; flex-direction: column; gap: 5px;
  cursor: pointer; padding: 0.4rem; background: none; border: none;
}
.nav-hamburger span {
  display: block; width: 24px; height: 2px;
  background: var(--charcoal); border-radius: 2px;
  transition: var(--transition);
}

/* ===== HERO ===== */
#inicio {
  min-height: 100vh;
  display: flex; align-items: center;
  background: linear-gradient(135deg, rgba(20,45,65,0.92) 0%, rgba(30,70,100,0.88) 100%),
              url('img/hero-bg.jpg') center/cover no-repeat;
  position: relative; overflow: hidden;
  padding-top: var(--nav-height);
}
#inicio::before {
  content: '';
  position: absolute; inset: 0;
  background:
    radial-gradient(circle at 20% 80%, rgba(91,174,201,0.12) 0%, transparent 50%),
    radial-gradient(circle at 80% 20%, rgba(200,112,64,0.10) 0%, transparent 50%);
}
.hero-grid {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 4rem; align-items: center;
  position: relative; z-index: 1;
  padding: 60px 0;
}
.hero-content { color: var(--white); }
.hero-badge {
  display: inline-flex; align-items: center; gap: 0.5rem;
  background: rgba(200,112,64,0.2);
  border: 1px solid rgba(200,112,64,0.4);
  color: #f0a070; font-size: 0.8rem; font-weight: 600;
  padding: 0.35rem 0.9rem; border-radius: 100px;
  margin-bottom: 1.5rem; text-transform: uppercase; letter-spacing: 0.08em;
}
.hero-content h1 { color: var(--white); margin-bottom: 1.25rem; }
.hero-content p { color: rgba(255,255,255,0.8); font-size: 1.1rem; margin-bottom: 2rem; max-width: 480px; }
.hero-actions { display: flex; gap: 1rem; flex-wrap: wrap; }
.hero-visual {
  display: flex; align-items: center; justify-content: center;
}
.hero-card {
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.15);
  backdrop-filter: blur(12px);
  border-radius: 16px; padding: 2.5rem;
  color: var(--white); width: 100%;
}
.hero-card-title { font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.12em; opacity: 0.6; margin-bottom: 1.5rem; }
.hero-stats-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1.25rem; }
.hero-stat { text-align: center; }
.hero-stat-value { font-size: 2.2rem; font-weight: 800; color: var(--white); line-height: 1; }
.hero-stat-value span { color: var(--orange); }
.hero-stat-label { font-size: 0.78rem; opacity: 0.7; margin-top: 0.25rem; }

/* ===== NOSOTROS ===== */
#nosotros .about-grid {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 5rem; align-items: start;
}
.about-text h2 { text-align: left; margin-bottom: 1.25rem; }
.about-text .section-divider { margin: 0 0 1.5rem; }
.about-text p { margin-bottom: 1rem; line-height: 1.8; }
.about-mv { display: grid; grid-template-columns: 1fr 1fr; gap: 1.25rem; margin-top: 2rem; }
.mv-card {
  padding: 1.25rem; border-radius: var(--radius);
  border-left: 3px solid var(--blue-dark);
  background: var(--gray-light);
}
.mv-card h4 { color: var(--blue-dark); font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.1em; margin-bottom: 0.5rem; }
.mv-card p { font-size: 0.88rem; color: var(--gray-dark); }
.values-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1.25rem; }
.value-card {
  background: var(--white); border-radius: var(--radius);
  padding: 1.5rem; box-shadow: var(--shadow);
  transition: var(--transition); border-top: 3px solid transparent;
}
.value-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); border-top-color: var(--orange); }
.value-icon {
  width: 48px; height: 48px; border-radius: 12px;
  background: linear-gradient(135deg, var(--blue-dark), var(--blue-light));
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 1rem;
}
.value-icon svg { width: 24px; height: 24px; color: var(--white); stroke: currentColor; fill: none; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.value-card h3 { margin-bottom: 0.5rem; font-size: 1rem; }
.value-card p { font-size: 0.875rem; }

/* ===== STATS BAR ===== */
.stats-bar {
  background: linear-gradient(135deg, var(--blue-dark), #1a4f78);
  padding: 50px 0;
}
.stats-grid {
  display: grid; grid-template-columns: repeat(4, 1fr);
  gap: 2rem; text-align: center;
}
.stat-item { color: var(--white); }
.stat-value { font-size: 2.8rem; font-weight: 800; color: var(--white); line-height: 1; }
.stat-value em { color: var(--orange); font-style: normal; }
.stat-label { font-size: 0.85rem; opacity: 0.75; margin-top: 0.4rem; text-transform: uppercase; letter-spacing: 0.06em; }

/* ===== SERVICIOS ===== */
.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.75rem;
}
.service-card {
  background: var(--white); border-radius: var(--radius);
  padding: 2rem; box-shadow: var(--shadow);
  transition: var(--transition);
  border-bottom: 3px solid transparent;
  position: relative; overflow: hidden;
}
.service-card::before {
  content: '';
  position: absolute; top: 0; left: 0; right: 0; height: 3px;
  background: linear-gradient(90deg, var(--blue-dark), var(--blue-light));
  transform: scaleX(0); transform-origin: left;
  transition: transform var(--transition);
}
.service-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-hover); }
.service-card:hover::before { transform: scaleX(1); }
.service-icon {
  width: 56px; height: 56px; border-radius: 14px;
  background: linear-gradient(135deg, rgba(43,107,154,0.1), rgba(91,174,201,0.1));
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 1.25rem;
  transition: var(--transition);
}
.service-card:hover .service-icon {
  background: linear-gradient(135deg, var(--blue-dark), var(--blue-light));
}
.service-icon svg { width: 28px; height: 28px; stroke: var(--blue-dark); fill: none; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; transition: var(--transition); }
.service-card:hover .service-icon svg { stroke: var(--white); }
.service-card h3 { margin-bottom: 0.6rem; color: var(--charcoal); }
.service-card p { font-size: 0.875rem; line-height: 1.7; }

/* ===== PROYECTOS ===== */
#proyectos { background: var(--gray-light); }
.projects-grid {
  display: grid; grid-template-columns: repeat(3, 1fr);
  gap: 1.75rem;
}
.project-card {
  background: var(--white); border-radius: var(--radius);
  overflow: hidden; box-shadow: var(--shadow);
  transition: var(--transition);
}
.project-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-hover); }
.project-img {
  height: 200px;
  background: linear-gradient(135deg, var(--blue-dark), var(--blue-light));
  display: flex; align-items: center; justify-content: center;
  overflow: hidden; position: relative;
}
.project-img img { width: 100%; height: 100%; object-fit: cover; }
.project-img .img-placeholder {
  color: rgba(255,255,255,0.4); font-size: 0.8rem; text-align: center;
}
.project-badge {
  position: absolute; top: 1rem; left: 1rem;
  background: var(--orange); color: var(--white);
  font-size: 0.72rem; font-weight: 700; padding: 0.25rem 0.7rem;
  border-radius: 100px; text-transform: uppercase; letter-spacing: 0.06em;
}
.project-body { padding: 1.5rem; }
.project-body h3 { margin-bottom: 0.5rem; }
.project-body p { font-size: 0.875rem; }

/* ===== CONTACTO ===== */
#contacto { background: var(--white); }
.contact-grid {
  display: grid; grid-template-columns: 1fr 1.4fr;
  gap: 4rem; align-items: start;
}
.contact-info h2 { text-align: left; margin-bottom: 1rem; }
.contact-info .section-divider { margin: 0 0 1.5rem; }
.contact-info p { margin-bottom: 2rem; }
.contact-items { display: flex; flex-direction: column; gap: 1.25rem; }
.contact-item {
  display: flex; gap: 1rem; align-items: flex-start;
}
.contact-item-icon {
  width: 44px; height: 44px; border-radius: 10px; flex-shrink: 0;
  background: linear-gradient(135deg, var(--blue-dark), var(--blue-light));
  display: flex; align-items: center; justify-content: center;
}
.contact-item-icon svg { width: 20px; height: 20px; stroke: var(--white); fill: none; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.contact-item-body strong { display: block; font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.08em; color: var(--gray-mid); margin-bottom: 0.2rem; }
.contact-item-body span, .contact-item-body a { font-size: 0.95rem; color: var(--charcoal); }
.contact-item-body a:hover { color: var(--blue-dark); }

/* Form */
.contact-form-wrap {
  background: var(--gray-light);
  border-radius: 12px; padding: 2.5rem;
}
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.form-group { margin-bottom: 1.25rem; }
.form-group label { display: block; font-size: 0.85rem; font-weight: 600; margin-bottom: 0.4rem; color: var(--charcoal); }
.form-group input, .form-group textarea, .form-group select {
  width: 100%; padding: 0.75rem 1rem;
  border: 1.5px solid #dde1e7;
  border-radius: var(--radius); background: var(--white);
  font-size: 0.9rem; color: var(--charcoal);
  transition: border-color var(--transition), box-shadow var(--transition);
  font-family: inherit;
}
.form-group input:focus, .form-group textarea:focus, .form-group select:focus {
  outline: none;
  border-color: var(--blue-dark);
  box-shadow: 0 0 0 3px rgba(43,107,154,0.12);
}
.form-group textarea { resize: vertical; min-height: 120px; }
.form-submit { width: 100%; justify-content: center; font-size: 1rem; padding: 0.85rem; }
.form-success {
  display: none;
  text-align: center; padding: 2rem;
  color: var(--blue-dark); font-weight: 600;
}

/* ===== FOOTER ===== */
footer {
  background: var(--charcoal);
  color: rgba(255,255,255,0.75);
  padding: 50px 0 24px;
}
.footer-grid {
  display: grid; grid-template-columns: 1.5fr 1fr 1fr;
  gap: 3rem; margin-bottom: 2.5rem;
}
.footer-brand .logo-text .name { color: var(--white); font-size: 1.1rem; }
.footer-brand .logo-text .sub { color: var(--orange); }
.footer-brand p { font-size: 0.875rem; line-height: 1.7; margin-top: 1rem; max-width: 280px; }
.footer-col h4 { color: var(--white); font-size: 0.85rem; text-transform: uppercase; letter-spacing: 0.1em; margin-bottom: 1rem; }
.footer-col ul { list-style: none; display: flex; flex-direction: column; gap: 0.5rem; }
.footer-col ul a { font-size: 0.875rem; transition: color var(--transition); }
.footer-col ul a:hover { color: var(--white); }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding-top: 1.5rem;
  display: flex; justify-content: space-between; align-items: center;
  font-size: 0.8rem;
}

/* ===== SCROLL TOP ===== */
.scroll-top {
  position: fixed; bottom: 1.5rem; right: 1.5rem; z-index: 999;
  width: 44px; height: 44px; border-radius: 50%;
  background: var(--orange); color: var(--white); border: none;
  display: flex; align-items: center; justify-content: center;
  cursor: pointer; box-shadow: var(--shadow);
  opacity: 0; pointer-events: none;
  transition: var(--transition);
}
.scroll-top.visible { opacity: 1; pointer-events: auto; }
.scroll-top:hover { background: #b5623a; transform: translateY(-3px); }
.scroll-top svg { width: 18px; height: 18px; stroke: currentColor; fill: none; stroke-width: 2.5; stroke-linecap: round; stroke-linejoin: round; }

/* ===== MOBILE NAV ===== */
@media (max-width: 900px) {
  .nav-hamburger { display: flex; }
  .nav-links {
    display: none; position: fixed;
    top: var(--nav-height); left: 0; right: 0;
    background: var(--white); flex-direction: column;
    padding: 1rem 1.5rem 1.5rem; gap: 0.25rem;
    box-shadow: 0 8px 24px rgba(0,0,0,0.12);
    border-top: 1px solid rgba(0,0,0,0.06);
  }
  .nav-links.open { display: flex; }
  .nav-links a { padding: 0.7rem 1rem; font-size: 1rem; }
}

/* ===== RESPONSIVE ===== */
@media (max-width: 1024px) {
  .hero-grid, #nosotros .about-grid { grid-template-columns: 1fr; gap: 3rem; }
  .hero-visual { display: none; }
  .services-grid, .projects-grid { grid-template-columns: repeat(2, 1fr); }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .contact-grid { grid-template-columns: 1fr; gap: 2.5rem; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 640px) {
  section { padding: 60px 0; }
  .services-grid, .projects-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .about-mv, .values-grid, .form-row { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; gap: 0.5rem; text-align: center; }
}