/* CSS para III Coloquio Internacional de Espacio y Sostenibilidad 2025 */

/* === VARIABLES CSS === */
:root {
  --coloquio-navy: #132542;
  --coloquio-blue: #22395a;
  --coloquio-ocean: #2D89EF;
  --coloquio-bright: #1A365D;
  --coloquio-light: #F4F5F7;
  --coloquio-gray: #7A8A99;
  --coloquio-coral: #FF6B6B;
  --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  
  /* Responsive spacing */
  --section-padding-mobile: 3rem 1rem;
  --section-padding-tablet: 4rem 2rem;
  --section-padding-desktop: 6rem 3rem;
  
  /* Typography scales */
  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-base: 1rem;
  --text-lg: 1.125rem;
  --text-xl: 1.25rem;
  --text-2xl: 1.5rem;
  --text-3xl: 1.875rem;
  --text-4xl: 2.25rem;
  --text-5xl: 3rem;
}

/* === ESTILOS BASE === */
* {
  box-sizing: border-box;
}

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

@media (max-width: 768px) {
  html {
    font-size: 14px;
  }
}

body {
  font-family: 'Lato', sans-serif;
  line-height: 1.6;
  color: #111111;
  margin: 0;
  padding: 0;
  overflow-x: hidden;
  min-height: 100vh;
}

.font-heading {
  font-family: 'Josefin Sans', sans-serif;
}

/* === CONTENEDORES RESPONSIVOS === */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1rem;
}

@media (min-width: 640px) {
  .container {
    padding: 0 1.5rem;
  }
}

@media (min-width: 1024px) {
  .container {
    padding: 0 2rem;
  }
}

@media (min-width: 1280px) {
  .container {
    padding: 0 2.5rem;
  }
}

/* === GRID RESPONSIVO === */
.grid {
  display: grid;
  gap: 1rem;
}

.grid-cols-1 {
  grid-template-columns: repeat(1, minmax(0, 1fr));
}

@media (min-width: 640px) {
  .sm\\:grid-cols-2 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .sm\\:gap-6 {
    gap: 1.5rem;
  }
}

@media (min-width: 768px) {
  .md\\:grid-cols-2 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .md\\:grid-cols-3 {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .md\\:grid-cols-4 {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
  .md\\:gap-8 {
    gap: 2rem;
  }
}

@media (min-width: 1024px) {
  .lg\\:grid-cols-3 {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .lg\\:grid-cols-4 {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
  .lg\\:gap-10 {
    gap: 2.5rem;
  }
}

/* === NAVEGACIÓN MEJORADA === */
.nav-glass {
  background: rgba(19, 37, 66, 0.95) !important;
  backdrop-filter: blur(20px) !important;
  -webkit-backdrop-filter: blur(20px) !important;
  border-bottom: 1px solid rgba(255, 255, 255, 0.2) !important;
  transition: var(--transition-smooth);
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 0.5rem 0;
}

/* Ajustes para el header en móviles */
@media (max-width: 768px) {
  .nav-glass {
    padding: 0.75rem 0;
  }
  
  .nav-glass .container {
    padding: 0 1rem;
  }
}

/* Logo responsivo */
.nav-logo {
  height: 2.5rem;
  width: auto;
  transition: var(--transition-smooth);
}

@media (max-width: 768px) {
  .nav-logo {
    height: 2rem;
  }
}

@media (min-width: 1024px) {
  .nav-logo {
    height: 3rem;
  }
}

/* Enlaces de navegación responsivos */
.nav-links {
  display: none;
}

@media (min-width: 1024px) {
  .nav-links {
    display: flex;
    gap: 2rem;
    align-items: center;
  }
}

.nav-link {
  color: white;
  text-decoration: none;
  font-weight: 500;
  font-size: 0.95rem;
  padding: 0.5rem 1rem;
  border-radius: 0.5rem;
  transition: var(--transition-smooth);
  position: relative;
}

.nav-link:hover {
  background: rgba(255, 255, 255, 0.1);
  color: var(--coloquio-ocean);
  transform: translateY(-1px);
}

/* Botón de menú móvil mejorado */
.mobile-menu-btn {
  display: flex;
  flex-direction: column;
  justify-content: center;
  width: 2.5rem;
  height: 2.5rem;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 0;
  z-index: 1001;
}

@media (min-width: 1024px) {
  .mobile-menu-btn {
    display: none;
  }
}

.mobile-menu-btn span {
  display: block;
  height: 2px;
  width: 100%;
  background: white;
  margin: 3px 0;
  transition: var(--transition-smooth);
  transform-origin: center;
}

.mobile-menu-btn.active span:nth-child(1) {
  transform: rotate(45deg) translate(6px, 6px);
}

.mobile-menu-btn.active span:nth-child(2) {
  opacity: 0;
}

.mobile-menu-btn.active span:nth-child(3) {
  transform: rotate(-45deg) translate(6px, -6px);
}

/* Menú móvil mejorado */
.mobile-menu {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(19, 37, 66, 0.98);
  backdrop-filter: blur(20px);
  transform: translateX(-100%);
  transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  z-index: 999;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  padding: 2rem;
}

.mobile-menu.active {
  transform: translateX(0);
}

.mobile-menu-item {
  color: white;
  text-decoration: none;
  font-size: 1.5rem;
  font-weight: 600;
  margin: 1rem 0;
  padding: 1rem 2rem;
  border-radius: 1rem;
  transition: var(--transition-smooth);
  text-align: center;
  min-width: 200px;
  display: block;
}

.mobile-menu-item:hover {
  background: rgba(45, 137, 239, 0.2);
  color: var(--coloquio-ocean);
  transform: scale(1.05);
}

/* Espaciado para compensar navbar fijo */
body {
  padding-top: 4rem;
}

@media (max-width: 768px) {
  body {
    padding-top: 3.5rem;
  }
}

@media (min-width: 1024px) {
  body {
    padding-top: 5rem;
  }
}

/* === CARRUSEL MEJORADO === */
.carousel-slide {
  opacity: 0;
  transition: opacity 0.8s ease-in-out;
  z-index: 1;
}

.carousel-slide.active {
  opacity: 1;
  z-index: 2;
}

.carousel-dot {
  cursor: pointer;
  transition: var(--transition-smooth);
  width: 12px;
  height: 12px;
  border-radius: 50%;
  margin: 0 4px;
}

@media (max-width: 768px) {
  .carousel-dot {
    width: 10px;
    height: 10px;
    margin: 0 3px;
  }
}

.carousel-dot:hover,
.carousel-dot.active {
  opacity: 1 !important;
  transform: scale(1.2);
}

/* Controles del carrusel responsivos */
.carousel-control {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  background: rgba(255, 255, 255, 0.9);
  border: none;
  border-radius: 50%;
  width: 3rem;
  height: 3rem;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: var(--transition-smooth);
  z-index: 10;
}

@media (max-width: 768px) {
  .carousel-control {
    width: 2.5rem;
    height: 2.5rem;
  }
}

.carousel-control:hover {
  background: white;
  transform: translateY(-50%) scale(1.1);
}

.carousel-control.prev {
  left: 1rem;
}

.carousel-control.next {
  right: 1rem;
}

@media (max-width: 768px) {
  .carousel-control.prev {
    left: 0.5rem;
  }
  
  .carousel-control.next {
    right: 0.5rem;
  }
}

/* === SECCIONES RESPONSIVAS === */
.section {
  padding: 4rem 0;
}

@media (max-width: 768px) {
  .section {
    padding: 3rem 0;
  }
}

@media (min-width: 1024px) {
  .section {
    padding: 6rem 0;
  }
}

/* === TARJETAS Y COMPONENTES RESPONSIVOS === */
/* === TARJETAS Y COMPONENTES RESPONSIVOS === */
.card-hover {
  transition: var(--transition-smooth);
  border-radius: 1rem;
  overflow: hidden;
}

.card-hover:hover {
  transform: translateY(-8px);
  box-shadow: 0 25px 50px -12px rgba(19, 37, 66, 0.25);
}

@media (max-width: 768px) {
  .card-hover:hover {
    transform: translateY(-4px);
  }
}

/* === TEMAS PRIORITARIOS RESPONSIVOS === */
.tema-card {
  border: 1px solid transparent;
  transition: var(--transition-smooth);
  padding: 2rem;
  border-radius: 1rem;
  background: white;
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

@media (max-width: 768px) {
  .tema-card {
    padding: 1.5rem;
    border-radius: 0.75rem;
  }
}

.tema-card:hover {
  border-color: var(--coloquio-ocean);
  transform: translateY(-5px);
  box-shadow: 0 20px 25px -5px rgba(19, 37, 66, 0.1);
}

/* === GALERÍA SIMPLE === */
#galeria .bg-gradient-to-br {
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: 0 4px 8px rgba(0,0,0,0.1);
  backdrop-filter: blur(10px);
}

#galeria .bg-gradient-to-br:hover {
  transform: translateY(-8px) scale(1.02);
  box-shadow: 0 20px 40px rgba(0,0,0,0.2);
}

#galeria .bg-gradient-to-br:active {
  transform: scale(0.95);
  transition: all 0.15s ease;
}

@media (max-width: 768px) {
  #galeria .bg-gradient-to-br:hover {
    transform: translateY(-4px) scale(1.01);
    box-shadow: 0 12px 24px rgba(0,0,0,0.15);
  }
}

/* Gradientes de galería */
.from-coloquio-ocean.to-coloquio-blue {
  background: linear-gradient(135deg, var(--coloquio-ocean) 0%, var(--coloquio-blue) 100%);
}

.from-coloquio-blue.to-coloquio-bright {
  background: linear-gradient(135deg, var(--coloquio-blue) 0%, var(--coloquio-bright) 100%);
}

.from-coloquio-bright.to-coloquio-navy {
  background: linear-gradient(135deg, var(--coloquio-bright) 0%, var(--coloquio-navy) 100%);
}

.from-coloquio-navy.to-coloquio-ocean {
  background: linear-gradient(135deg, var(--coloquio-navy) 0%, var(--coloquio-ocean) 100%);
}

.from-coloquio-ocean.to-coloquio-bright {
  background: linear-gradient(135deg, var(--coloquio-ocean) 0%, var(--coloquio-bright) 100%);
}

.from-coloquio-bright.to-coloquio-blue {
  background: linear-gradient(135deg, var(--coloquio-bright) 0%, var(--coloquio-blue) 100%);
}

.filter-btn {
  padding: 0.75rem 1.5rem;
  border: 2px solid var(--coloquio-ocean);
  background: transparent;
  color: var(--coloquio-ocean);
  border-radius: 2rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition-smooth);
  font-size: 0.875rem;
}

@media (max-width: 640px) {
  .filter-btn {
    padding: 0.5rem 1rem;
    font-size: 0.8rem;
  }
}

.filter-btn:hover,
.filter-btn.active {
  background: var(--coloquio-ocean);
  color: white;
  transform: translateY(-2px);
}

/* === FORMULARIOS RESPONSIVOS === */
.form-group {
  margin-bottom: 1.5rem;
}

@media (max-width: 768px) {
  .form-group {
    margin-bottom: 1.25rem;
  }
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: 1rem;
  border: 2px solid #e2e8f0;
  border-radius: 0.75rem;
  font-size: 1rem;
  transition: var(--transition-smooth);
  background: white;
}

@media (max-width: 768px) {
  .form-input,
  .form-select,
  .form-textarea {
    padding: 0.875rem;
    font-size: 0.95rem;
  }
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--coloquio-ocean);
  box-shadow: 0 0 0 3px rgba(45, 137, 239, 0.1);
}

.form-label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 600;
  color: var(--coloquio-navy);
  font-size: 0.95rem;
}

@media (max-width: 768px) {
  .form-label {
    font-size: 0.9rem;
  }
}

/* Checkbox y radio responsivos */
.checkbox-group,
.radio-group {
  display: grid;
  gap: 0.75rem;
}

@media (max-width: 768px) {
  .checkbox-group,
  .radio-group {
    gap: 0.5rem;
  }
}

.checkbox-item,
.radio-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem;
  border: 1px solid #e2e8f0;
  border-radius: 0.5rem;
  transition: var(--transition-smooth);
  cursor: pointer;
}

@media (max-width: 768px) {
  .checkbox-item,
  .radio-item {
    padding: 0.625rem;
    gap: 0.5rem;
  }
}

.checkbox-item:hover,
.radio-item:hover {
  background: #f8fafc;
  border-color: var(--coloquio-ocean);
}

/* === BOTONES RESPONSIVOS === */
.btn {
  padding: 1rem 2rem;
  border-radius: 0.75rem;
  font-weight: 600;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  transition: var(--transition-smooth);
  cursor: pointer;
  border: none;
  font-size: 1rem;
  line-height: 1;
}

@media (max-width: 768px) {
  .btn {
    padding: 0.875rem 1.75rem;
    font-size: 0.95rem;
  }
}

@media (max-width: 480px) {
  .btn {
    padding: 0.75rem 1.5rem;
    font-size: 0.9rem;
  }
}

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

.btn-primary:hover {
  background: var(--coloquio-blue);
  transform: translateY(-2px);
  box-shadow: 0 10px 25px rgba(45, 137, 239, 0.4);
}

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

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

/* === ACCORDIÓN FAQ RESPONSIVO === */
.accordion-item {
  border: 1px solid #e2e8f0;
  border-radius: 0.75rem;
  margin-bottom: 1rem;
  overflow: hidden;
  transition: var(--transition-smooth);
}

@media (max-width: 768px) {
  .accordion-item {
    margin-bottom: 0.75rem;
    border-radius: 0.5rem;
  }
}

.accordion-header {
  padding: 1.5rem;
  background: #f8fafc;
  cursor: pointer;
  transition: var(--transition-smooth);
}

@media (max-width: 768px) {
  .accordion-header {
    padding: 1.25rem;
  }
}

.accordion-header:hover {
  background: #f1f5f9;
}

.accordion-content {
  padding: 0 1.5rem;
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease, padding 0.3s ease;
}

@media (max-width: 768px) {
  .accordion-content {
    padding: 0 1.25rem;
  }
}

.accordion-item.active .accordion-content {
  padding: 1.5rem;
  max-height: 500px;
}

@media (max-width: 768px) {
  .accordion-item.active .accordion-content {
    padding: 1.25rem;
  }
}

/* === ANIMACIONES MEJORADAS === */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes pulse {
  0%, 100% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.05);
  }
}

.animate-fade-in-up {
  animation: fadeInUp 0.6s ease-out;
}

.animate-pulse-gentle {
  animation: pulse 2s infinite;
}

/* === UTILIDADES RESPONSIVAS === */
.text-responsive {
  font-size: clamp(0.875rem, 2.5vw, 1.125rem);
}

.heading-responsive {
  font-size: clamp(1.5rem, 4vw, 3rem);
}

.spacing-responsive {
  margin: clamp(1rem, 3vw, 2rem) 0;
}

/* === ANIMACIONES Y TRANSICIONES === */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* === MEJORAS DE ACCESIBILIDAD === */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* === ESTADOS DE FOCUS MEJORADOS === */
*:focus {
  outline: 2px solid var(--coloquio-ocean);
  outline-offset: 2px;
}

/* === OPTIMIZACIONES DE RENDIMIENTO === */
.will-change-transform {
  will-change: transform;
}

.backface-hidden {
  backface-visibility: hidden;
}

/* === BOTONES ADICIONALES === */
.btn-coloquio {
  background: var(--coloquio-ocean);
  color: white;
  transition: var(--transition-smooth);
  font-weight: 600;
}

.btn-coloquio:hover {
  background: var(--coloquio-bright);
  transform: translateY(-2px);
  box-shadow: 0 10px 25px rgba(45, 137, 239, 0.4);
}

.btn-outline-coloquio {
  background: transparent;
  border: 2px solid white;
  color: white;
  transition: var(--transition-smooth);
}

.btn-outline-coloquio:hover {
  background: white;
  color: var(--coloquio-navy);
  transform: translateY(-2px);
}

/* === SECCIONES === */
.section-bg {
  background: var(--coloquio-light);
}

.section-hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
}

/* === ANIMACIONES === */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.animate-fadeInUp {
  animation: fadeInUp 0.8s ease-out forwards;
}

@keyframes slideInLeft {
  from {
    opacity: 0;
    transform: translateX(-50px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

.animate-slideInLeft {
  animation: slideInLeft 0.8s ease-out forwards;
}

@keyframes slideInRight {
  from {
    opacity: 0;
    transform: translateX(50px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

.animate-slideInRight {
  animation: slideInRight 0.8s ease-out forwards;
}

/* === EFECTOS DE HOVER === */
.hover-lift:hover {
  transform: translateY(-3px);
  transition: var(--transition-smooth);
}

.hover-scale:hover {
  transform: scale(1.05);
  transition: var(--transition-smooth);
}

/* === ICONOS === */
.icon-wrapper {
  transition: var(--transition-smooth);
}

.icon-wrapper:hover {
  transform: rotate(5deg) scale(1.1);
  color: var(--coloquio-ocean);
}

/* === FORMULARIOS === */
.form-input {
  border: 2px solid #e5e7eb;
  transition: var(--transition-smooth);
}

.form-input:focus {
  border-color: var(--coloquio-ocean);
  box-shadow: 0 0 0 3px rgba(45, 137, 239, 0.1);
  outline: none;
}

.form-input.error {
  border-color: #ef4444;
  box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.1);
}

/* === FOOTER === */
footer {
  background: linear-gradient(135deg, var(--coloquio-navy) 0%, var(--coloquio-blue) 100%);
}

/* === RESPONSIVE === */
@media (max-width: 768px) {
  .carousel-slide h1 {
    font-size: 2.5rem;
    line-height: 1.2;
  }
  
  .tema-grid {
    grid-template-columns: 1fr;
    gap: 1rem;
  }
}

@media (max-width: 640px) {
  .carousel-slide h1 {
    font-size: 2rem;
  }
  
  .nav-glass .container {
    padding: 1rem;
  }
  
  #days, #hours, #minutes, #seconds {
    font-size: 2rem;
  }
}

/* === ACCESIBILIDAD === */
@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  
  .carousel-slide {
    transition: none;
  }
}

/* === FOCUS STATES === */
*:focus {
  outline: 2px solid var(--coloquio-ocean);
  outline-offset: 2px;
}

button:focus,
a:focus {
  outline-color: var(--coloquio-bright);
}

/* === UTILIDADES === */
.text-shadow {
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.text-shadow-lg {
  text-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
}

.bg-gradient-coloquio {
  background: linear-gradient(135deg, var(--coloquio-navy) 0%, var(--coloquio-ocean) 100%);
}

.bg-gradient-coloquio-light {
  background: linear-gradient(135deg, var(--coloquio-ocean) 0%, var(--coloquio-bright) 100%);
}

/* === SCROLLBAR PERSONALIZADA === */
::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: var(--coloquio-light);
}

::-webkit-scrollbar-thumb {
  background: var(--coloquio-ocean);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--coloquio-bright);
}

/* === ESTADOS DE LOADING === */
.loading {
  opacity: 0.7;
  pointer-events: none;
}

.loading::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 20px;
  height: 20px;
  margin: -10px 0 0 -10px;
  border: 2px solid var(--coloquio-light);
  border-top: 2px solid var(--coloquio-ocean);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}