/* ==============================================
   ESTILOS GLOBALES - MATUASD
   ============================================== */

/* Google Fonts ahora se cargan desde el HTML para mejor performance */

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  font-size: var(--font-size-base);
  line-height: 1.6;
  color: var(--color-black);
  background-color: var(--color-white);
  overflow-x: hidden;
}

/* Tipografía */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 600;
  line-height: 1.2;
  margin-bottom: var(--spacing-md);
  color: var(--color-primary);
}

h1 { font-size: var(--font-size-4xl); }
h2 { font-size: var(--font-size-3xl); }
h3 { font-size: var(--font-size-2xl); }
h4 { font-size: var(--font-size-xl); }
h5 { font-size: var(--font-size-lg); }
h6 { font-size: var(--font-size-base); }

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

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

a:hover {
  color: var(--color-secondary);
}

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

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

/* Header */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--header-height);
  background-color: var(--color-white);
  box-shadow: var(--shadow-md);
  z-index: var(--z-fixed);
  transition: transform var(--transition-base);
}

.header.hidden {
  transform: translateY(-100%);
}

.header__container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 100%;
}

.header__logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.header__logo-img {
  height: 50px;
  width: auto;
}

.header__logo-text {
  font-family: var(--font-heading);
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--color-primary);
}

/* Navegación */
.nav__list {
  display: flex;
  list-style: none;
  gap: var(--spacing-lg);
  align-items: center;
}

.nav__link {
  font-weight: 500;
  color: var(--color-black);
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--border-radius-md);
  transition: all var(--transition-base);
  position: relative;
}

.nav__link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 2px;
  background-color: var(--color-secondary);
  transition: width var(--transition-base);
}

.nav__link:hover::after {
  width: 80%;
}

.nav__link:hover {
  color: var(--color-primary);
  background-color: var(--color-gray-light);
}

.nav__link--active {
  color: var(--color-primary);
  font-weight: 600;
}

/* Dropdown Menu */
.nav__item--dropdown {
  position: relative;
}

.nav__dropdown-toggle {
  background: none;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  font-family: inherit;
  font-size: inherit;
  font-weight: inherit;
  color: inherit;
  line-height: inherit;
}

.nav__dropdown-toggle:hover {
  color: var(--color-primary);
  background-color: var(--color-gray-light);
}

.dropdown-arrow {
  font-size: 0.7em;
  transition: transform var(--transition-base);
  display: inline-block;
}

.nav__item--dropdown.active .dropdown-arrow {
  transform: rotate(180deg);
}

.nav__dropdown {
  position: absolute;
  top: 100%;
  left: 0;
  background-color: var(--color-white);
  box-shadow: var(--shadow-lg);
  border-radius: var(--border-radius-md);
  min-width: 220px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px);
  transition: all var(--transition-base);
  z-index: var(--z-dropdown);
  list-style: none;
  padding: var(--spacing-sm) 0;
  margin-top: var(--spacing-xs);
}

.nav__item--dropdown.active .nav__dropdown,
.nav__item--dropdown:hover .nav__dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.nav__dropdown-link {
  display: block;
  padding: var(--spacing-sm) var(--spacing-lg);
  color: var(--color-black);
  text-decoration: none;
  transition: all var(--transition-base);
  white-space: nowrap;
}

.nav__dropdown-link:hover {
  background-color: var(--color-gray-light);
  color: var(--color-primary);
  padding-left: calc(var(--spacing-lg) + var(--spacing-xs));
}

/* Menu Toggle (Mobile) */
.nav__toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--spacing-sm);
}

.nav__toggle-line {
  width: 25px;
  height: 3px;
  background-color: var(--color-primary);
  border-radius: var(--border-radius-sm);
  transition: all var(--transition-base);
}

.nav__toggle.active .nav__toggle-line:nth-child(1) {
  transform: rotate(45deg) translate(8px, 8px);
}

.nav__toggle.active .nav__toggle-line:nth-child(2) {
  opacity: 0;
}

.nav__toggle.active .nav__toggle-line:nth-child(3) {
  transform: rotate(-45deg) translate(7px, -6px);
}

/* Hero Section */
.hero {
  margin-top: var(--header-height);
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
  color: var(--color-white);
  padding: var(--spacing-4xl) 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image: 
    radial-gradient(circle at 20% 50%, rgba(255, 111, 0, 0.1) 0%, transparent 50%),
    radial-gradient(circle at 80% 80%, rgba(255, 111, 0, 0.1) 0%, transparent 50%);
  pointer-events: none;
}

.hero__content {
  position: relative;
  z-index: 1;
}

.hero__title {
  color: var(--color-white);
  margin-bottom: var(--spacing-lg);
  text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.2);
}

.hero__subtitle {
  font-size: var(--font-size-xl);
  margin-bottom: var(--spacing-md);
  opacity: 0.95;
}

.hero__description {
  font-size: var(--font-size-lg);
  max-width: 800px;
  margin: 0 auto var(--spacing-xl);
  opacity: 0.9;
}

.hero__cta {
  display: inline-flex;
  gap: var(--spacing-md);
  flex-wrap: wrap;
  justify-content: center;
}

/* Botones */
.btn {
  display: inline-block;
  padding: var(--spacing-md) var(--spacing-xl);
  font-size: var(--font-size-base);
  font-weight: 600;
  text-align: center;
  border-radius: var(--border-radius-md);
  border: 2px solid transparent;
  cursor: pointer;
  transition: all var(--transition-base);
  text-decoration: none;
}

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

.btn--primary:hover {
  background-color: var(--color-secondary-dark);
  border-color: var(--color-secondary-dark);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

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

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

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

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

/* Secciones */
.section {
  padding: var(--spacing-4xl) 0;
}

.section--alt {
  background-color: var(--color-gray-light);
}

.section__header {
  text-align: center;
  margin-bottom: var(--spacing-3xl);
}

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

.section__subtitle {
  font-size: var(--font-size-lg);
  color: var(--color-gray-dark);
  max-width: 700px;
  margin: 0 auto;
}

/* Cards */
.card {
  background-color: var(--color-white);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-md);
  overflow: hidden;
  transition: all var(--transition-base);
  height: 100%;
  display: flex;
  flex-direction: column;
}

.card:hover {
  box-shadow: var(--shadow-xl);
  transform: translateY(-5px);
}

.card__image {
  width: 100%;
  height: 200px;
  object-fit: cover;
}

.card__content {
  padding: var(--spacing-lg);
  flex-grow: 1;
  display: flex;
  flex-direction: column;
}

.card__title {
  color: var(--color-primary);
  font-size: var(--font-size-xl);
  margin-bottom: var(--spacing-sm);
}

.card__meta {
  font-size: var(--font-size-sm);
  color: var(--color-gray-dark);
  margin-bottom: var(--spacing-md);
  display: flex;
  gap: var(--spacing-md);
}

.card__description {
  color: var(--color-black);
  margin-bottom: var(--spacing-lg);
  flex-grow: 1;
}

.card__footer {
  margin-top: auto;
}

/* Grid */
.grid {
  display: grid;
  gap: var(--spacing-xl);
}

.grid--2 {
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.grid--3 {
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.grid--4 {
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

/* Footer */
.footer {
  background-color: var(--color-primary-dark);
  color: var(--color-white);
  padding: var(--spacing-3xl) 0 var(--spacing-xl);
}

.footer__content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-xl);
  margin-bottom: var(--spacing-xl);
}

.footer__section-title {
  color: var(--color-white);
  font-size: var(--font-size-lg);
  margin-bottom: var(--spacing-md);
}

.footer__list {
  list-style: none;
}

.footer__list-item {
  margin-bottom: var(--spacing-sm);
}

.footer__link {
  color: var(--color-gray-medium);
  transition: color var(--transition-base);
}

.footer__link:hover {
  color: var(--color-secondary);
}

.footer__bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: var(--spacing-lg);
  text-align: center;
  color: var(--color-gray-medium);
}

.footer__social {
  display: flex;
  gap: var(--spacing-md);
  justify-content: center;
  margin-top: var(--spacing-md);
}

.footer__social-link {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: rgba(255, 255, 255, 0.1);
  border-radius: var(--border-radius-full);
  transition: all var(--transition-base);
}

.footer__social-link:hover {
  background-color: var(--color-secondary);
  transform: translateY(-3px);
}

/* Back to top button */
.back-to-top {
  position: fixed;
  bottom: var(--spacing-xl);
  right: var(--spacing-xl);
  width: 50px;
  height: 50px;
  background-color: var(--color-secondary);
  color: var(--color-white);
  border: none;
  border-radius: var(--border-radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  box-shadow: var(--shadow-lg);
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-base);
  z-index: var(--z-sticky);
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
}

.back-to-top:hover {
  background-color: var(--color-secondary-dark);
  transform: translateY(-5px);
}

/* Breadcrumbs */
.breadcrumb {
  display: flex;
  list-style: none;
  gap: var(--spacing-sm);
  padding: var(--spacing-md) 0;
  font-size: var(--font-size-sm);
  flex-wrap: wrap;
}

.breadcrumb__item {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.breadcrumb__item:not(:last-child)::after {
  content: '›';
  color: var(--color-gray-dark);
}

.breadcrumb__link {
  color: var(--color-gray-dark);
}

.breadcrumb__link:hover {
  color: var(--color-primary);
}

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

.mt-sm { margin-top: var(--spacing-sm); }
.mt-md { margin-top: var(--spacing-md); }
.mt-lg { margin-top: var(--spacing-lg); }
.mt-xl { margin-top: var(--spacing-xl); }

.mb-sm { margin-bottom: var(--spacing-sm); }
.mb-md { margin-bottom: var(--spacing-md); }
.mb-lg { margin-bottom: var(--spacing-lg); }
.mb-xl { margin-bottom: var(--spacing-xl); }

.hidden { display: none; }
.visible { display: block; }

/* Loading & Placeholder */
.skeleton {
  background: linear-gradient(90deg, var(--color-gray-light) 25%, var(--color-gray-medium) 50%, var(--color-gray-light) 75%);
  background-size: 200% 100%;
  animation: loading 1.5s ease-in-out infinite;
}

@keyframes loading {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

.placeholder {
  background-color: var(--color-gray-light);
  border: 2px dashed var(--color-gray-medium);
  padding: var(--spacing-2xl);
  text-align: center;
  border-radius: var(--border-radius-lg);
  color: var(--color-gray-dark);
}

.placeholder__icon {
  font-size: var(--font-size-4xl);
  margin-bottom: var(--spacing-md);
  opacity: 0.5;
}

/* Badge */
.badge {
  display: inline-block;
  padding: var(--spacing-xs) var(--spacing-sm);
  font-size: var(--font-size-xs);
  font-weight: 600;
  border-radius: var(--border-radius-sm);
  text-transform: uppercase;
}

.badge--primary { background-color: var(--color-primary); color: var(--color-white); }
.badge--secondary { background-color: var(--color-secondary); color: var(--color-white); }
.badge--success { background-color: var(--color-success); color: var(--color-white); }
.badge--warning { background-color: var(--color-warning); color: var(--color-black); }
.badge--error { background-color: var(--color-error); color: var(--color-white); }