/*
 * Author: Pyrukent
 * assets/css/main.css
 * Proyecto CASSIPE S.A. de C.V.
 * Versión: 0.1.0
 */

/* CSS Variables - Paleta Elegante Corporativo */
:root {
  /* Colores principales */
  --primary-color: #1A1A1A;     /* Negro carbón */
  --secondary-color: #4ECDC4;   /* Verde agua */
  --accent-color: #A78BFA;      /* Violeta suave */
  --neutral-color: #F5F5F5;     /* Gris claro */
  
  /* Colores adicionales */
  --white: #FFFFFF;
  --black: #000000;
  --gray-light: #E5E5E5;
  --gray-medium: #999999;
  --gray-dark: #333333;
  
  /* Gradientes */
  --gradient-primary: linear-gradient(135deg, var(--primary-color) 0%, var(--gray-dark) 100%);
  --gradient-secondary: linear-gradient(135deg, var(--secondary-color) 0%, var(--accent-color) 100%);
  --gradient-overlay: linear-gradient(rgba(26, 26, 26, 0.7), rgba(26, 26, 26, 0.5));
  
  /* Tipografía */
  --font-primary: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  --font-secondary: 'Arial', sans-serif;
  
  /* Tamaños de fuente */
  --font-size-xl: 3.5rem;
  --font-size-lg: 2.5rem;
  --font-size-md: 1.8rem;
  --font-size-base: 1rem;
  --font-size-sm: 0.875rem;
  --font-size-xs: 0.75rem;
  
  /* Espaciado */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --spacing-xxl: 4rem;
  
  /* Bordes */
  --border-radius: 8px;
  --border-radius-sm: 4px;
  --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, 0.15);
  --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.2);
  --shadow-xl: 0 16px 32px rgba(0, 0, 0, 0.25);
  
  /* Transiciones */
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;
  
  /* Z-index */
  --z-navbar: 1000;
  --z-modal: 2000;
  --z-tooltip: 3000;
}

/* Reset y Base */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  overflow-x: hidden;
  width: 100%;
}

body {
  font-family: var(--font-primary);
  font-size: var(--font-size-base);
  line-height: 1.6;
  color: var(--gray-dark);
  background-color: var(--white);
  overflow-x: hidden;
  width: 100%;
  max-width: 100vw;
}

/* Contenedores */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

.container-fluid {
  width: 100%;
  padding: 0 var(--spacing-md);
}

/* Navegación */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  background: rgba(26, 26, 26, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(78, 205, 196, 0.2);
  z-index: var(--z-navbar);
  transition: var(--transition-normal);
}

.navbar.scrolled {
  background: rgba(26, 26, 26, 0.98);
  box-shadow: var(--shadow-md);
}

.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: 1200px;
  margin: 0 auto;
  padding: var(--spacing-sm) var(--spacing-md);
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  color: var(--white);
  text-decoration: none;
}

.logo-img {
  width: 40px;
  height: 40px;
  object-fit: contain;
}

.logo-text {
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: 1px;
}

.nav-menu {
  display: flex;
  list-style: none;
  gap: var(--spacing-lg);
}

.nav-link {
  color: var(--white);
  text-decoration: none;
  font-weight: 500;
  position: relative;
  padding: var(--spacing-xs) 0;
  transition: var(--transition-fast);
}

.nav-link:hover,
.nav-link.active {
  color: var(--secondary-color);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--secondary-color);
  transition: var(--transition-fast);
}

.nav-link:hover::after,
.nav-link.active::after {
  width: 100%;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  cursor: pointer;
  gap: 4px;
}

.bar {
  width: 25px;
  height: 3px;
  background: var(--white);
  transition: var(--transition-fast);
}

/* Hero Section */
.hero {
  position: relative;
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: flex-start;
  background-image: url('../images/hero/hero-background.jpg');
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  background-attachment: fixed;
  color: var(--white);
  padding-left: 5%;
}

/* Fix para móviles - background-attachment: fixed causa problemas */
@media (max-width: 768px) {
  .hero {
    background-attachment: scroll;
    height: 100svh; /* Mejor altura para móviles */
  }
}

.hero-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(26, 26, 26, 0.3);
  z-index: 1;
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 800px;
  padding: 0 var(--spacing-md);
  margin-right: auto;
  margin-left: 0;
  text-align: left;
}

.hero-title {
  font-size: var(--font-size-xl);
  font-weight: 700;
  margin-bottom: var(--spacing-md);
  opacity: 0;
  transform: translateY(30px);
  animation: fadeInUp 1s ease forwards 0.5s;
}

.hero-subtitle {
  font-size: var(--font-size-md);
  margin-bottom: var(--spacing-xl);
  opacity: 0;
  transform: translateY(30px);
  animation: fadeInUp 1s ease forwards 0.7s;
}

.hero-buttons {
  display: flex;
  gap: var(--spacing-md);
  justify-content: center;
  flex-wrap: wrap;
  opacity: 0;
  transform: translateY(30px);
  animation: fadeInUp 1s ease forwards 0.9s;
}

.hero-scroll {
  position: absolute;
  bottom: var(--spacing-xl);
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-xs);
  color: var(--white);
  font-size: var(--font-size-sm);
  opacity: 0;
  animation: fadeIn 1s ease forwards 1.5s;
}

.scroll-arrow {
  width: 1px;
  height: 30px;
  background: var(--secondary-color);
  position: relative;
  animation: scroll 2s infinite;
}

.scroll-arrow::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: -3px;
  width: 7px;
  height: 7px;
  border-right: 2px solid var(--secondary-color);
  border-bottom: 2px solid var(--secondary-color);
  transform: rotate(45deg);
}

/* Botones */
.btn {
  display: inline-block;
  padding: var(--spacing-sm) var(--spacing-lg);
  border: none;
  border-radius: var(--border-radius);
  font-size: var(--font-size-base);
  font-weight: 600;
  text-decoration: none;
  text-align: center;
  cursor: pointer;
  transition: var(--transition-normal);
  position: relative;
  overflow: hidden;
}

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

.btn-primary:hover {
  background: #45b7aa;
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.btn-secondary {
  background: transparent;
  color: var(--white);
  border: 2px solid var(--accent-color);
}

.btn-secondary:hover {
  background: var(--accent-color);
  color: var(--white);
  transform: translateY(-2px);
}

/* Secciones */
section {
  padding: var(--spacing-xxl) 0;
}

.section-header {
  text-align: center;
  margin-bottom: var(--spacing-xxl);
}

.section-title {
  font-size: var(--font-size-lg);
  font-weight: 700;
  color: var(--primary-color);
  margin-bottom: var(--spacing-md);
  position: relative;
}

.section-title::after {
  content: '';
  position: absolute;
  bottom: -10px;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 3px;
  background: var(--secondary-color);
}

.section-subtitle {
  font-size: var(--font-size-md);
  color: var(--gray-medium);
  max-width: 600px;
  margin: 0 auto;
}

/* About Section */
.about {
  background: var(--neutral-color);
}

.about-description {
  font-size: 1.1rem;
  text-align: center;
  margin-bottom: var(--spacing-xl);
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

.mission-vision {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
  gap: var(--spacing-xl);
  margin-top: var(--spacing-xl);
}

.mission-vision-item {
  background: var(--white);
  padding: var(--spacing-xl);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-md);
  text-align: center;
  transition: var(--transition-normal);
}

.mission-vision-item:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}

.icon-container {
  width: 80px;
  height: 80px;
  margin: 0 auto var(--spacing-md);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--gradient-secondary);
}

.icon-mission,
.icon-vision {
  width: 40px;
  height: 40px;
  background: var(--white);
  border-radius: 50%;
}

.mission-vision-item h3 {
  font-size: 1.5rem;
  color: var(--primary-color);
  margin-bottom: var(--spacing-md);
}

/* Animaciones */
@keyframes fadeInUp {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeIn {
  to {
    opacity: 1;
  }
}

@keyframes scroll {
  0%, 100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(10px);
  }
}

/* Utilidades */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.d-none { display: none; }
.d-block { display: block; }
.d-flex { display: flex; }
.d-grid { display: grid; }

.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: var(--spacing-xs); }
.mb-2 { margin-bottom: var(--spacing-sm); }
.mb-3 { margin-bottom: var(--spacing-md); }
.mb-4 { margin-bottom: var(--spacing-lg); }
.mb-5 { margin-bottom: var(--spacing-xl); }

/* Footer credits */
.footer-credits a {
  color: var(--secondary-color);
  text-decoration: none;
  transition: var(--transition-fast);
}

.footer-credits a:hover {
  color: var(--accent-color);
  text-decoration: underline;
}