:root {
  /* Paleta inspirada en sitios universitarios (UDV) */
  --udv-blue: #006400;      /* Azul profundo principal */
  --udv-dark: #006400;      /* Azul casi negro */
  --udv-gold: #F2A900;      /* Amarillo/Dorado institucional */
  --udv-cyan: #14a800;      /* Azul claro secundario */
  --bg-light: #F8F9FA;      /* Gris muy claro para fondos */
  --text-main: #333333;
}

body {
  font-family: 'Open Sans', sans-serif;
  color: var(--text-main);
  background-color: var(--bg-light);
}

h1, h2, h3, h4, h5 {
  font-family: 'Montserrat', sans-serif;
}

/* Navegación */
.custom-navbar {
  background-color: var(--udv-blue);
  padding: 15px 0;
}
.custom-navbar .navbar-brand, .custom-navbar .nav-link {
  color: #ffffff !important;
}
.custom-navbar .nav-link:hover {
  color: #14a800 !important;
}
.btn-nav {
  background-color: var(--udv-gold);
  color: #ffffff !important;
  border-radius: 4px;
  padding: 8px 16px !important;
  font-weight: 600;
  margin-left: 15px;
}

/* Hero Section */
.hero-section {
  background: linear-gradient(rgba(0, 0, 0, 0.6), rgba(0, 0, 0, 0.6)), url(img/HERO.jpg);
  /*background: linear-gradient(135deg, var(--udv-blue) 0%, var(--udv-cyan) 100%);*/
  color: white;
  padding: 100px 0;
  min-height: 70vh;
  display: flex;
  align-items: center;
}
.btn-accent {
  background-color: var(--udv-gold);
  color: #ffff;
  font-weight: bold;
  border: none;
  padding: 12px 30px;
  border-radius: 4px;
}
.btn-accent:hover {
  background-color: var(--udv-gold);
  color: #14a800;
}

/* Tipografía y Títulos */
.section-title {
  color: var(--udv-blue);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
}
.title-divider {
  width: 60px;
  height: 4px;
  background-color: var(--udv-gold);
  margin: 15px auto 20px auto;
}
.step-title {
  font-size: 1.25rem;
  color: var(--udv-blue);
  border-bottom: 2px solid #e0e0e0;
  padding-bottom: 10px;
  font-weight: 600;
}

/* Botones Calculadora */
.btn-primary {
  background-color: var(--udv-blue);
  border-color: var(--udv-blue);
  font-family: 'Montserrat', sans-serif;
}
.btn-primary:hover {
  background-color: var(--udv-cyan);
  border-color: var(--udv-cyan);
}

/* Cajas de Resultados */
.result-hero {
  background-color: var(--udv-blue);
}
.text-accent {
  color: var(--udv-gold) !important;
}
.result-card {
  border-top: 5px solid transparent !important;
}
.border-blue { border-top-color: var(--udv-blue) !important; }
.border-gold { border-top-color: var(--udv-gold) !important; }
.border-cyan { border-top-color: var(--udv-cyan) !important; }

/* Tablas */
.table-dark-blue {
  background-color: var(--udv-blue);
  color: white;
}
.table-dark-blue th {
  background-color: var(--udv-blue);
  color: white;
  border: none;
}