/*
 * Alianza - Soluciones para transporte
 * Archivo CSS principal
 */

/* ===== Reset y Base ===== */
:root {
  /* Paleta de colores corporativos */
  --primary: #0056b3;
  --primary-dark: #003d7a;
  --primary-light: #1e88e5;
  --secondary: #424242;
  --accent: #ffc107;
  --text-dark: #212121;
  --text-light: #757575;
  --light-bg: #f5f5f5;
  --white: #ffffff;
  --black: #000000;
  --border-color: #e0e0e0;
  --success: #4caf50;
  --error: #f44336;
  
  /* Tipografía */
  --font-primary: 'Roboto', sans-serif;
  --font-size-base: 16px;
  --line-height-base: 1.5;
  
  /* Espaciado */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  
  /* Bordes */
  --border-radius-sm: 4px;
  --border-radius-md: 8px;
  --border-radius-lg: 12px;
  
  /* Sombras */
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.1);
  
  /* Transiciones */
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;
  
  /* Contenedor */
  --container-width: 1200px;
  --container-padding: 1rem;
}

/* Box sizing para todos los elementos */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: var(--font-size-base);
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-primary);
  line-height: var(--line-height-base);
  color: var(--text-dark);
  background-color: var(--white);
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: var(--primary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--primary-dark);
}

ul, ol {
  list-style: none;
}

/* ===== Layout ===== */
.container {
  width: 100%;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

.text-center {
  text-align: center;
}

/* ===== Tipografía ===== */
h1, h2, h3, h4, h5, h6 {
  margin-bottom: var(--spacing-md);
  font-weight: 700;
  line-height: 1.2;
}

h1 {
  font-size: 2.5rem;
}

h2 {
  font-size: 2rem;
}

h3 {
  font-size: 1.5rem;
}

h4 {
  font-size: 1.25rem;
}

p {
  margin-bottom: var(--spacing-md);
}

.section-title {
  position: relative;
  text-align: center;
  margin-bottom: var(--spacing-xl);
  padding-bottom: var(--spacing-md);
}

.section-title::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 80px;
  height: 4px;
  background-color: var(--primary);
}

/* ===== Botones ===== */
.btn {
  display: inline-block;
  font-weight: 500;
  text-align: center;
  white-space: nowrap;
  vertical-align: middle;
  cursor: pointer;
  padding: 0.75rem 1.5rem;
  font-size: 1rem;
  border-radius: var(--border-radius-md);
  transition: all var(--transition-normal);
  border: 2px solid transparent;
}

.btn-primary {
  background-color: var(--primary);
  color: var(--white); /* Asegurando que el color del texto sea blanco */
}

.btn-primary:hover {
  background-color: var(--primary-dark);
  color: var(--white); /* Manteniendo el texto en blanco al hacer hover */
}

.btn-secondary {
  background-color: var(--secondary);
  color: var(--white);
}

.btn-secondary:hover {
  background-color: #333333;
  color: var(--white);
}

.btn-outline {
  background-color: transparent;
  border-color: var(--primary);
  color: var(--primary);
}

.btn-outline:hover {
  background-color: var(--primary);
  color: var(--white);
}

.btn-block {
  display: block;
  width: 100%;
}

/* ===== Header ===== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  background-color: var(--white);
  box-shadow: var(--shadow-sm);
  z-index: 1000;
  padding: 1rem 0;
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo img {
  height: 50px;
}

.main-nav {
  display: flex;
  align-items: center;
}

.nav-list {
  display: flex;
  align-items: center;
}

.nav-list li:not(:last-child) {
  margin-right: var(--spacing-lg);
}

.nav-list a {
  color: var(--text-dark);
  font-weight: 500;
  position: relative;
}

.nav-list a.active,
.nav-list a:hover {
  color: var(--primary);
}

/* Ocultar temporalmente items de navegación */
.hidden-nav-item {
  display: none !important;
}

/* Asegurarse que el estilo del botón se preserva */
.nav-list .btn-login {
  background-color: transparent;
  border: 2px solid var(--primary);
  color: var(--primary);
  transition: all var(--transition-normal);
}

.nav-list .btn-login:hover {
  background-color: var(--primary);
  color: var(--white) !important;
}

.btn-login:hover {
  background-color: var(--secondary);
  color: var(--white);
}

/* Separación adicional para el botón de login */
.login-item {
  margin-right: var(--spacing-sm);
}

/* Ajuste para dispositivos móviles */
@media (max-width: 768px) {
  .login-item {
      margin-left: 0;
      margin-top: var(--spacing-sm);
  }
}

/* Asegurando que el botón de contacto tenga texto blanco */
.nav-list .btn-primary {
  color: var(--white);
}

.nav-list .btn-primary:hover {
  color: var(--white);
}

.nav-list a.active::after {
  content: '';
  position: absolute;
  bottom: -5px;
  left: 0;
  width: 100%;
  height: 2px;
  background-color: var(--primary);
}

.menu-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
}

.menu-toggle span {
  display: block;
  width: 25px;
  height: 3px;
  background-color: var(--text-dark);
  margin: 5px 0;
  transition: all var(--transition-fast);
}

/* ===== Footer ===== */
.site-footer {
  background-color: var(--secondary);
  color: var(--white);
  padding: var(--spacing-xl) 0 var(--spacing-md);
}

.footer-columns {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-xl);
}

.footer-logo img {
  height: 50px;
  margin-bottom: var(--spacing-md);
}

.footer-column h3 {
  margin-bottom: var(--spacing-md);
  color: var(--white);
  font-size: 1.2rem;
}

.footer-links li {
  margin-bottom: var(--spacing-sm);
}

.footer-links a {
  color: #cccccc;
}

.footer-links a:hover {
  color: var(--white);
}

.social-links {
  display: flex;
  gap: var(--spacing-sm);
  margin-top: var(--spacing-md);
}

.social-links a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background-color: rgba(255, 255, 255, 0.1);
  color: var(--white);
  transition: background-color var(--transition-fast);
}

.social-links a:hover {
  background-color: var(--primary);
}

address p {
  margin-bottom: var(--spacing-sm);
  display: flex;
  align-items: center;
}

address i {
  margin-right: var(--spacing-sm);
}

.footer-bottom {
  padding-top: var(--spacing-md);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.legal-links {
  display: flex;
  gap: var(--spacing-md);
}

.legal-links a {
  color: #cccccc;
  font-size: 0.9rem;
}

/* ===== Formularios ===== */
.form-group {
  margin-bottom: var(--spacing-md);
}

label {
  display: block;
  margin-bottom: var(--spacing-xs);
  font-weight: 500;
}

input, 
select, 
textarea {
  width: 100%;
  padding: 0.75rem;
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-md);
  font-family: var(--font-primary);
  font-size: 1rem;
  transition: border-color var(--transition-fast);
}

input:focus, 
select:focus, 
textarea:focus {
  outline: none;
  border-color: var(--primary);
}

textarea {
  resize: vertical;
}

/* ===== Secciones específicas ===== */

/* Hero Banner */
.hero-banner {
  padding: calc(80px + var(--spacing-xl)) 0 var(--spacing-xl);
  background: linear-gradient(rgba(0, 0, 0, 0.6), rgba(0, 0, 0, 0.6)), url('../images/banners/hero-bg.jpg');
  background-size: cover;
  background-position: center;
  color: var(--white);
  text-align: center;
}

.hero-content {
  max-width: 800px;
  margin: 0 auto;
}

.hero-content h1 {
  font-size: 3rem;
  margin-bottom: var(--spacing-lg);
}

.hero-content p {
  font-size: 1.25rem;
  margin-bottom: var(--spacing-xl);
}

.hero-buttons {
  display: flex;
  justify-content: center;
  gap: var(--spacing-md);
}

/* Categorías destacadas */
.featured-categories {
  padding: var(--spacing-xl) 0;
  background-color: var(--light-bg);
}

.category-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--spacing-lg);
}

.category-card {
  display: flex;
  flex-direction: column;
  height: 100%;
  background-color: var(--white);
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  transition: transform var(--transition-normal);
}

.category-card:hover {
  transform: translateY(-10px);
}

.category-card img {
  width: 100%;
  height: 200px;
  object-fit: cover;
}

.card-content {
  padding: var(--spacing-md) var(--spacing-md) 0;
  flex-grow: 1;
  display: flex;
  flex-direction: column;
}

.card-content h3 {
  margin-bottom: var(--spacing-xs);
  font-size: 1.25rem;
}

.card-content p {
  color: var(--text-light);
  margin-bottom: 0;
}

.card-actions {
  padding: var(--spacing-md);
  margin-top: auto;
  display: flex;
  justify-content: center;
}

.card-actions .btn {
  display: inline-block;
  text-align: center;
}

/* Modificación para cambiar el color de los botones en tarjetas de categoría */
.category-card .btn {
  background-color: var(--primary);
  color: var(--white);
}

.category-card .btn:hover {
  background-color: var(--primary-dark);
  color: var(--white);
}

/* Por qué elegirnos */
.why-choose-us {
  padding: var(--spacing-xl) 0;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--spacing-lg);
}

.feature-item {
  text-align: center;
  padding: var(--spacing-lg);
  border-radius: var(--border-radius-lg);
  transition: box-shadow var(--transition-normal);
}

.feature-item:hover {
  box-shadow: var(--shadow-md);
}

.feature-icon {
  width: 80px;
  height: 80px;
  margin: 0 auto var(--spacing-md);
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: rgba(0, 86, 179, 0.1);
  border-radius: 50%;
}

.feature-icon img {
  width: 40px;
  height: 40px;
  margin: 0 auto;
}

/* Proyectos destacados */
.featured-projects {
  padding: var(--spacing-xl) 0;
  background-color: var(--light-bg);
}

.projects-slider {
  margin-bottom: var(--spacing-lg);
  position: relative;
}

.project-slide {
  position: relative;
  height: 400px;
  border-radius: var(--border-radius-lg);
  overflow: hidden;
}

.project-slide img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.project-info {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: var(--spacing-lg);
  background: linear-gradient(to top, rgba(0, 0, 0, 0.8), transparent);
  color: var(--white);
}

/* Contacto rápido */
.quick-contact {
  padding: var(--spacing-xl) 0;
}

.contact-wrapper {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-xl);
  align-items: center;
}

.contact-info h2 {
  margin-bottom: var(--spacing-md);
}

.contact-details {
  margin-top: var(--spacing-lg);
}

.contact-details li {
  margin-bottom: var(--spacing-sm);
  display: flex;
  align-items: center;
}

.contact-details li i {
  margin-right: var(--spacing-sm);
  color: var(--primary);
}

.contact-form {
  background-color: var(--white);
  padding: var(--spacing-lg);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-md);
}

/* ===== Media Queries ===== */
@media (max-width: 1200px) {
  :root {
    --container-width: 960px;
  }
  
  .category-grid,
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 992px) {
  :root {
    --container-width: 720px;
  }
  
  .footer-columns {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .contact-wrapper {
    grid-template-columns: 1fr;
  }
  
  .hero-content h1 {
    font-size: 2.5rem;
  }
}

@media (max-width: 768px) {
  :root {
    --container-width: 540px;
  }
  
  .menu-toggle {
    display: block;
  }
  
  .nav-list {
    position: fixed;
    top: 70px;
    left: 0;
    right: 0;
    background-color: var(--white);
    flex-direction: column;
    align-items: flex-start;
    padding: var(--spacing-md);
    box-shadow: var(--shadow-md);
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
  }
  
  .nav-list.active {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }
  
  .nav-list li {
    width: 100%;
    margin-right: 0;
    margin-bottom: var(--spacing-md);
  }
  
  .hero-buttons {
    flex-direction: column;
  }
  
  .category-grid,
  .features-grid {
    grid-template-columns: 1fr;
  }
  
  .footer-columns {
    grid-template-columns: 1fr;
  }
  
  .footer-bottom {
    flex-direction: column;
    gap: var(--spacing-md);
    text-align: center;
  }
}

@media (max-width: 576px) {
  :root {
    --container-width: 100%;
    --container-padding: 1.5rem;
  }
  
  h1 {
    font-size: 2rem;
  }
  
  h2 {
    font-size: 1.75rem;
  }
  
  .hero-content h1 {
    font-size: 2rem;
  }
}