:root {
  --primary-blue: #0f4c81;
  --dark-blue: #0a2540;
  --accent-blue: #1e88e5;
  --light-bg: #f8fafc;
  --white: #ffffff;
  --text-dark: #1e293b;
  --text-muted: #64748b;
  --border-color: #e2e8f0;
}

* { margin: 0; padding: 0; box-sizing: border-box; font-family: 'Segoe UI', system-ui, sans-serif; }
body { background-color: var(--light-bg); color: var(--text-dark); line-height: 1.6; }

/* Navigation */
.navbar {
  display: flex; justify-content: space-between; align-items: center;
  background-color: var(--dark-blue); padding: 1rem 5%;
  position: sticky; top: 0; z-index: 1000; box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}
.logo a { color: var(--white); font-size: 1.4rem; font-weight: 800; text-decoration: none; letter-spacing: 1px; }
.logo span { color: var(--accent-blue); font-size: 0.9rem; background: rgba(30,136,229,0.2); padding: 2px 6px; border-radius: 4px; }
.navbar ul { display: flex; list-style: none; align-items: center; gap: 1.5rem; }
.navbar a { color: var(--white); text-decoration: none; font-weight: 500; transition: 0.3s; }
.navbar a:hover { color: var(--accent-blue); }
.btn-nav { background-color: var(--accent-blue); padding: 0.5rem 1rem; border-radius: 6px; }

/* Hero */
.hero {
  position: relative; background: linear-gradient(135deg, var(--dark-blue) 0%, var(--primary-blue) 100%);
  padding: 5rem 5%; color: var(--white); text-align: center;
}
.badge { background: rgba(255,255,255,0.15); border: 1px solid rgba(255,255,255,0.3); padding: 0.3rem 1rem; border-radius: 20px; font-size: 0.85rem; }
.hero h1 { font-size: 2.5rem; margin: 1rem 0; font-weight: 700; }
.hero p { font-size: 1.1rem; max-width: 650px; margin: 0 auto 2rem; color: #cbd5e1; }
.hero-buttons { display: flex; justify-content: center; gap: 1rem; flex-wrap: wrap; }
.btn-primary { background: var(--accent-blue); color: white; padding: 0.8rem 1.6rem; border-radius: 6px; text-decoration: none; font-weight: 600; }
.btn-outline { border: 2px solid white; color: white; padding: 0.8rem 1.6rem; border-radius: 6px; text-decoration: none; font-weight: 600; }

/* Catalog */
.catalog-section { padding: 4rem 5%; max-width: 1200px; margin: 0 auto; }
.section-title { text-align: center; margin-bottom: 2.5rem; }
.section-title h2 { color: var(--primary-blue); font-size: 2rem; }
.section-title p { color: var(--text-muted); }
.truck-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 2rem; }
.truck-card { background: white; border-radius: 10px; border: 1px solid var(--border-color); overflow: hidden; box-shadow: 0 4px 6px -1px rgba(0,0,0,0.05); }
.card-img-placeholder { height: 180px; background: #e2e8f0; display: flex; flex-direction: column; align-items: center; justify-content: center; color: var(--text-muted); gap: 0.5rem; }
.truck-info { padding: 1.5rem; }
.specs { color: var(--text-muted); font-size: 0.9rem; margin: 0.5rem 0 1rem; }
.btn-card { display: block; text-align: center; background: var(--light-bg); color: var(--primary-blue); border: 1px solid var(--primary-blue); padding: 0.5rem; border-radius: 6px; text-decoration: none; font-weight: 600; }

/* Separate Feature Selector Section */
.feature-selector-section { background: white; padding: 4rem 5%; border-top: 2px solid var(--border-color); }
.section-container { max-width: 900px; margin: 0 auto; }
.section-header { text-align: center; margin-bottom: 2rem; }
.sub-tag { color: var(--accent-blue); font-weight: 700; text-transform: uppercase; font-size: 0.8rem; letter-spacing: 1px; }
.section-header h2 { color: var(--dark-blue); font-size: 2rem; margin-top: 0.3rem; }
.section-header p { color: var(--text-muted); }
.selector-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 1.5rem; background: var(--light-bg); padding: 2rem; border-radius: 12px; border: 1px solid var(--border-color); }
.form-group { display: flex; flex-direction: column; }
.form-group.full-width { grid-column: 1 / -1; }
.form-group label { font-weight: 600; margin-bottom: 0.4rem; color: var(--dark-blue); font-size: 0.95rem; }
.form-group select, .form-group textarea { padding: 0.75rem; border: 1px solid var(--border-color); border-radius: 6px; font-size: 0.95rem; background: white; outline: none; }
.form-group select:focus, .form-group textarea:focus { border-color: var(--accent-blue); }
.btn-whatsapp-submit { background-color: #25d366; color: white; border: none; padding: 1rem; font-size: 1.05rem; font-weight: 700; border-radius: 6px; cursor: pointer; width: 100%; display: flex; justify-content: center; align-items: center; gap: 0.5rem; transition: 0.3s; }
.btn-whatsapp-submit:hover { background-color: #1eb954; }

footer { background: var(--dark-blue); color: var(--text-muted); text-align: center; padding: 1.5rem; font-size: 0.9rem; }

/* Estilos Base Lozano Bros. MX */
:root {
  --primary-blue: #0f4c81;
  --dark-blue: #0a2540;
  --accent-blue: #1e88e5;
  --light-bg: #f8fafc;
  --white: #ffffff;
}

body {
  font-family: Arial, sans-serif;
  margin: 0;
  padding: 0;
  background-color: var(--light-bg);
}

.navbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background-color: var(--dark-blue);
  color: var(--white);
  padding: 1rem 2rem;
}

.hero {
  text-align: center;
  padding: 4rem 1rem;
  background-color: var(--primary-blue);
  color: var(--white);
}

.grid-catalog {
  display: flex;
  gap: 1.5rem;
  justify-content: center;
  padding: 2rem;
  flex-wrap: wrap;
}

.card {
  background: var(--white);
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 4px 6px rgba(0,0,0,0.1);
  width: 300px;
}

.card-body {
  padding: 1rem;
}

/* Regla requerida para mantener proporciones limpias en las fotos de los camiones */
.truck-img {
  width: 100%;
  height: 200px;
  object-fit: cover;
}

.btn-primary, .btn-card {
  background-color: #25d366;
  color: white;
  border: none;
  padding: 10px 15px;
  border-radius: 5px;
  cursor: pointer;
  font-weight: bold;
}

/* Estilos para el Armador de Vehículo */
.configurator-section {
  background-color: #ffffff;
  max-width: 900px;
  margin: 2rem auto;
  padding: 2rem;
  border-radius: 10px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.08);
}

.configurator-section h2 {
  color: var(--dark-blue);
  text-align: center;
  margin-bottom: 0.5rem;
}

.configurator-section p {
  text-align: center;
  color: #666;
  margin-bottom: 2rem;
}

.configurator-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1.5rem;
}

.config-group {
  display: flex;
  flex-direction: column;
}

.config-group label {
  font-weight: bold;
  margin-bottom: 0.5rem;
  color: var(--dark-blue);
}

.config-group select, .config-group input {
  padding: 10px;
  border: 1px solid #ccc;
  border-radius: 6px;
  font-size: 1rem;
}

.config-action {
  text-align: center;
  margin-top: 2rem;
}

.btn-whatsapp-large {
  background-color: #25d366;
  color: white;
  border: none;
  padding: 15px 30px;
  font-size: 1.1rem;
  font-weight: bold;
  border-radius: 30px;
  cursor: pointer;
  transition: background-color 0.2s ease;
}

.btn-whatsapp-large:hover {
  background-color: #1eb954;
}

/* Regla requerida para mantener proporciones limpias en fotos */
.truck-img {
  width: 100%;
  height: 200px;
  object-fit: cover;
}