/* ============================================
   INSOLUTEC MÉXICO - ESTILOS PRINCIPALES
   Ingeniería y Soluciones Tecnológicas
   ============================================ */

/* --- RESET & BASE --- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --primary:   #0056b3;
  --primary-dark: #003d80;
  --accent:    #e8232a;
  --dark:      #1a1a2e;
  --gray:      #f5f7fa;
  --text:      #333;
  --text-light:#666;
  --white:     #fff;
  --border:    #e0e0e0;
  --shadow:    0 4px 20px rgba(0,0,0,.10);
  --radius:    8px;
  --transition: .3s ease;
}

html { scroll-behavior: smooth; }

body {
  font-family: 'Open Sans', 'Segoe UI', Arial, sans-serif;
  font-size: 15px;
  color: var(--text);
  line-height: 1.7;
  background: #fff;
}

a { color: var(--primary); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--accent); }
img { max-width: 100%; height: auto; display: block; }
ul { list-style: none; }

h1,h2,h3,h4,h5,h6 {
  font-family: 'Raleway', 'Segoe UI', Arial, sans-serif;
  font-weight: 700;
  line-height: 1.3;
  color: var(--dark);
}

.container { max-width: 1140px; margin: 0 auto; padding: 0 20px; }
.section-pad { padding: 80px 0; }
.section-pad-sm { padding: 50px 0; }
.text-center { text-align: center; }
.text-white { color: #fff !important; }
.bg-gray { background: var(--gray); }
.bg-dark { background: var(--dark); }
.bg-primary { background: var(--primary); }

/* --- TOPBAR --- */
.topbar {
  background: var(--dark);
  color: #ccc;
  font-size: 13px;
  padding: 8px 0;
}
.topbar .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
}
.topbar-left { display: flex; gap: 20px; flex-wrap: wrap; }
.topbar-left span { display: flex; align-items: center; gap: 6px; }
.topbar-left i { color: var(--accent); }
.topbar-right a {
  color: #ccc;
  font-size: 13px;
  display: flex;
  align-items: center;
  gap: 6px;
  transition: color var(--transition);
}
.topbar-right a:hover { color: var(--accent); }

/* --- NAVBAR --- */
.navbar {
  background: #fff;
  box-shadow: 0 2px 12px rgba(0,0,0,.10);
  position: sticky;
  top: 0;
  z-index: 1000;
}
.navbar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 70px;
}
.navbar-brand img { height: 50px; width: auto; }
.navbar-brand span {
  font-size: 22px;
  font-weight: 800;
  color: var(--primary);
  letter-spacing: -0.5px;
}

.nav-menu { display: flex; align-items: center; gap: 4px; }
.nav-menu li { position: relative; }
.nav-menu > li > a {
  display: block;
  padding: 10px 16px;
  font-size: 14px;
  font-weight: 600;
  color: var(--dark);
  border-radius: 4px;
  transition: all var(--transition);
  text-transform: uppercase;
  letter-spacing: .5px;
}
.nav-menu > li > a:hover,
.nav-menu > li > a.active {
  color: var(--primary);
  background: rgba(0,86,179,.07);
}

/* Dropdown */
.dropdown { position: relative; }
.dropdown-menu-nav {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  background: #fff;
  min-width: 220px;
  box-shadow: var(--shadow);
  border-radius: var(--radius);
  border-top: 3px solid var(--primary);
  z-index: 200;
  padding: 8px 0;
}
.dropdown:hover .dropdown-menu-nav { display: block; }
.dropdown-menu-nav a {
  display: block;
  padding: 10px 20px;
  font-size: 13px;
  color: var(--text);
  transition: all var(--transition);
}
.dropdown-menu-nav a:hover {
  background: var(--gray);
  color: var(--primary);
  padding-left: 26px;
}

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 6px;
  background: none;
  border: none;
}
.hamburger span {
  display: block;
  width: 26px;
  height: 3px;
  background: var(--dark);
  border-radius: 2px;
  transition: all var(--transition);
}

/* --- HERO --- */
.hero {
  position: relative;
  min-height: 520px;
  display: flex;
  align-items: center;
  background: linear-gradient(135deg, rgba(0,30,80,.85) 0%, rgba(0,86,179,.75) 100%),
              url('../images/hero-bg.jpg') center/cover no-repeat;
  color: #fff;
  overflow: hidden;
}
.hero::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  right: 0;
  height: 60px;
  background: #fff;
  clip-path: ellipse(55% 100% at 50% 100%);
}
.hero-content { position: relative; z-index: 1; max-width: 680px; }
.hero-badge {
  display: inline-block;
  background: var(--accent);
  color: #fff;
  font-size: 12px;
  font-weight: 700;
  padding: 4px 14px;
  border-radius: 20px;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 18px;
}
.hero h1 {
  font-size: clamp(28px, 4vw, 48px);
  color: #fff;
  margin-bottom: 18px;
  line-height: 1.2;
}
.hero p {
  font-size: 17px;
  color: rgba(255,255,255,.88);
  margin-bottom: 32px;
  max-width: 560px;
}
.hero-btns { display: flex; gap: 14px; flex-wrap: wrap; }

/* --- BUTTONS --- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 28px;
  border-radius: 50px;
  font-size: 14px;
  font-weight: 700;
  cursor: pointer;
  border: 2px solid transparent;
  transition: all var(--transition);
  text-transform: uppercase;
  letter-spacing: .5px;
}
.btn-primary {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}
.btn-primary:hover {
  background: #c01a20;
  border-color: #c01a20;
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(232,35,42,.35);
}
.btn-outline {
  background: transparent;
  color: #fff;
  border-color: rgba(255,255,255,.7);
}
.btn-outline:hover {
  background: #fff;
  color: var(--primary);
  border-color: #fff;
}
.btn-blue {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}
.btn-blue:hover {
  background: var(--primary-dark);
  border-color: var(--primary-dark);
  color: #fff;
  transform: translateY(-2px);
}

/* --- SECTION TITLES --- */
.section-title { margin-bottom: 50px; }
.section-title .label {
  display: inline-block;
  font-size: 12px;
  font-weight: 700;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 2px;
  margin-bottom: 10px;
}
.section-title h2 {
  font-size: clamp(24px, 3vw, 36px);
  color: var(--dark);
  margin-bottom: 14px;
}
.section-title p {
  font-size: 16px;
  color: var(--text-light);
  max-width: 600px;
  margin: 0 auto;
}
.divider {
  width: 50px;
  height: 4px;
  background: var(--primary);
  border-radius: 2px;
  margin: 14px auto 0;
}
.divider-left { margin-left: 0; }

/* --- STATS BAR --- */
.stats-bar {
  background: var(--primary);
  padding: 30px 0;
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  text-align: center;
}
.stat-item { color: #fff; }
.stat-item .number {
  font-size: 36px;
  font-weight: 800;
  display: block;
  line-height: 1;
}
.stat-item .label-stat {
  font-size: 13px;
  opacity: .85;
  margin-top: 4px;
}

/* --- SERVICES GRID --- */
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 28px;
}
.service-card {
  background: #fff;
  border-radius: var(--radius);
  padding: 32px 28px;
  box-shadow: var(--shadow);
  border-bottom: 4px solid transparent;
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}
.service-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 4px;
  background: var(--primary);
  transform: scaleX(0);
  transition: transform var(--transition);
}
.service-card:hover { transform: translateY(-6px); box-shadow: 0 12px 40px rgba(0,0,0,.14); }
.service-card:hover::before { transform: scaleX(1); }
.service-icon {
  width: 64px;
  height: 64px;
  background: rgba(0,86,179,.1);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  font-size: 26px;
  color: var(--primary);
  transition: all var(--transition);
}
.service-card:hover .service-icon {
  background: var(--primary);
  color: #fff;
}
.service-card h3 { font-size: 18px; margin-bottom: 12px; color: var(--dark); }
.service-card p { font-size: 14px; color: var(--text-light); line-height: 1.7; }
.service-card .read-more {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 16px;
  font-size: 13px;
  font-weight: 700;
  color: var(--primary);
  text-transform: uppercase;
  letter-spacing: .5px;
}
.service-card .read-more:hover { color: var(--accent); }

/* --- ABOUT SECTION --- */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}
.about-img-wrap { position: relative; }
.about-img-wrap img {
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  width: 100%;
}
.about-badge {
  position: absolute;
  bottom: -20px;
  right: -20px;
  background: var(--accent);
  color: #fff;
  padding: 20px 24px;
  border-radius: var(--radius);
  text-align: center;
  box-shadow: var(--shadow);
}
.about-badge .num { font-size: 36px; font-weight: 800; display: block; line-height: 1; }
.about-badge .txt { font-size: 12px; text-transform: uppercase; letter-spacing: 1px; }
.about-text .section-title { margin-bottom: 24px; }
.about-text p { color: var(--text-light); margin-bottom: 16px; }
.about-list { margin: 20px 0 28px; }
.about-list li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  margin-bottom: 12px;
  font-size: 14px;
  color: var(--text);
}
.about-list li i { color: var(--primary); margin-top: 3px; flex-shrink: 0; }

/* --- VALUES --- */
.values-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.value-card {
  text-align: center;
  padding: 32px 20px;
  border-radius: var(--radius);
  background: #fff;
  box-shadow: var(--shadow);
  transition: all var(--transition);
}
.value-card:hover { transform: translateY(-4px); }
.value-card .icon {
  font-size: 36px;
  color: var(--primary);
  margin-bottom: 14px;
}
.value-card h4 { font-size: 16px; color: var(--dark); margin-bottom: 8px; }
.value-card p { font-size: 13px; color: var(--text-light); }

/* --- CTA BANNER --- */
.cta-banner {
  background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 100%);
  padding: 60px 0;
  text-align: center;
  color: #fff;
}
.cta-banner h2 { font-size: 32px; color: #fff; margin-bottom: 14px; }
.cta-banner p { font-size: 17px; opacity: .88; margin-bottom: 30px; }

/* --- CLIENTS --- */
.clients-grid {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  gap: 30px;
}
.client-logo {
  width: 120px;
  height: 80px;
  display: flex;
  align-items: center;
  justify-content: center;
  filter: grayscale(100%);
  opacity: .6;
  transition: all var(--transition);
}
.client-logo:hover { filter: none; opacity: 1; }
.client-logo img { max-width: 100%; max-height: 60px; object-fit: contain; }

/* --- PAGE HERO (inner pages) --- */
.page-hero {
  background: linear-gradient(135deg, rgba(0,30,80,.9) 0%, rgba(0,86,179,.8) 100%),
              url('../images/hero-bg.jpg') center/cover no-repeat;
  padding: 80px 0 60px;
  color: #fff;
  text-align: center;
}
.page-hero h1 { font-size: 38px; color: #fff; margin-bottom: 12px; }
.breadcrumb {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: rgba(255,255,255,.75);
}
.breadcrumb a { color: rgba(255,255,255,.75); }
.breadcrumb a:hover { color: #fff; }
.breadcrumb .sep { opacity: .5; }

/* --- SERVICE DETAIL --- */
.service-detail-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 50px;
  align-items: center;
  margin-bottom: 60px;
}
.service-detail-grid.reverse { direction: rtl; }
.service-detail-grid.reverse > * { direction: ltr; }
.service-detail-img img {
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  width: 100%;
}
.service-detail-text h2 { font-size: 28px; margin-bottom: 16px; }
.service-detail-text p { color: var(--text-light); margin-bottom: 14px; }
.feature-list { margin: 20px 0; }
.feature-list li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  margin-bottom: 10px;
  font-size: 14px;
}
.feature-list li i { color: var(--primary); margin-top: 3px; }

/* --- UC BRANDS --- */
.brands-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 20px;
  margin-top: 30px;
}
.brand-item {
  background: var(--gray);
  border-radius: var(--radius);
  padding: 20px;
  text-align: center;
  font-weight: 700;
  font-size: 15px;
  color: var(--primary);
  border: 2px solid var(--border);
  transition: all var(--transition);
}
.brand-item:hover {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}

/* --- CONTACT --- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 50px;
}
.contact-info h3 { font-size: 22px; margin-bottom: 20px; }
.contact-info-item {
  display: flex;
  gap: 16px;
  margin-bottom: 24px;
}
.contact-info-item .icon {
  width: 48px;
  height: 48px;
  background: rgba(0,86,179,.1);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  font-size: 18px;
  flex-shrink: 0;
}
.contact-info-item .details h4 { font-size: 15px; margin-bottom: 4px; }
.contact-info-item .details p,
.contact-info-item .details a { font-size: 14px; color: var(--text-light); }
.contact-info-item .details a:hover { color: var(--primary); }

.contact-form-wrap {
  background: #fff;
  border-radius: var(--radius);
  padding: 40px;
  box-shadow: var(--shadow);
}
.contact-form-wrap h3 { font-size: 22px; margin-bottom: 24px; }
.form-group { margin-bottom: 20px; }
.form-group label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--dark);
  margin-bottom: 6px;
  text-transform: uppercase;
  letter-spacing: .5px;
}
.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 12px 16px;
  border: 2px solid var(--border);
  border-radius: var(--radius);
  font-size: 14px;
  font-family: inherit;
  color: var(--text);
  transition: border-color var(--transition);
  background: #fff;
}
.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--primary);
}
.form-group textarea { resize: vertical; min-height: 130px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }

/* --- FOOTER --- */
.footer {
  background: var(--dark);
  color: #aaa;
  padding: 60px 0 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 40px;
  padding-bottom: 40px;
}
.footer-brand img { height: 45px; margin-bottom: 16px; filter: brightness(0) invert(1); }
.footer-brand p { font-size: 14px; line-height: 1.7; margin-bottom: 20px; }
.footer-social { display: flex; gap: 10px; }
.footer-social a {
  width: 36px;
  height: 36px;
  background: rgba(255,255,255,.1);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #aaa;
  font-size: 15px;
  transition: all var(--transition);
}
.footer-social a:hover { background: var(--primary); color: #fff; }
.footer-col h4 {
  font-size: 15px;
  color: #fff;
  margin-bottom: 18px;
  padding-bottom: 10px;
  border-bottom: 2px solid rgba(255,255,255,.1);
}
.footer-links li { margin-bottom: 10px; }
.footer-links a {
  font-size: 14px;
  color: #aaa;
  display: flex;
  align-items: center;
  gap: 8px;
  transition: all var(--transition);
}
.footer-links a:hover { color: #fff; padding-left: 4px; }
.footer-links a i { font-size: 11px; color: var(--primary); }
.footer-contact-item {
  display: flex;
  gap: 12px;
  margin-bottom: 14px;
  font-size: 14px;
}
.footer-contact-item i { color: var(--primary); margin-top: 3px; flex-shrink: 0; }
.footer-contact-item a { color: #aaa; }
.footer-contact-item a:hover { color: #fff; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.08);
  padding: 20px 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
  font-size: 13px;
}
.footer-bottom a { color: #aaa; }
.footer-bottom a:hover { color: #fff; }

/* --- WHATSAPP FLOAT --- */
.whatsapp-float {
  position: fixed;
  bottom: 28px;
  right: 28px;
  width: 56px;
  height: 56px;
  background: #25d366;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 26px;
  box-shadow: 0 4px 20px rgba(37,211,102,.4);
  z-index: 999;
  transition: all var(--transition);
  text-decoration: none;
}
.whatsapp-float:hover {
  transform: scale(1.1);
  color: #fff;
  box-shadow: 0 6px 28px rgba(37,211,102,.55);
}

/* --- MOBILE MENU --- */
@media (max-width: 900px) {
  .hamburger { display: flex; }
  .nav-menu {
    display: none;
    position: absolute;
    top: 70px;
    left: 0;
    right: 0;
    background: #fff;
    flex-direction: column;
    padding: 16px 0;
    box-shadow: 0 8px 24px rgba(0,0,0,.12);
    gap: 0;
  }
  .nav-menu.open { display: flex; }
  .nav-menu > li > a { padding: 12px 24px; border-radius: 0; }
  .dropdown-menu-nav {
    position: static;
    box-shadow: none;
    border: none;
    background: var(--gray);
    display: none;
    padding: 0;
  }
  .dropdown.open .dropdown-menu-nav { display: block; }
  .dropdown-menu-nav a { padding: 10px 36px; }
}

@media (max-width: 768px) {
  .about-grid,
  .service-detail-grid,
  .contact-grid { grid-template-columns: 1fr; }
  .service-detail-grid.reverse { direction: ltr; }
  .about-badge { position: static; margin-top: 20px; display: inline-block; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .values-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .contact-form-wrap { padding: 24px; }
}

@media (max-width: 480px) {
  .stats-grid { grid-template-columns: 1fr 1fr; }
  .values-grid { grid-template-columns: 1fr 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .hero-btns { flex-direction: column; }
  .topbar .container { flex-direction: column; align-items: flex-start; }
}