/* ==========================================================================
   EUROIMPACTA - GLOBAL STYLES
   Sistema de diseño completo con theming, variables y componentes
   ========================================================================== */

/* ===== VARIABLES CSS - SISTEMA DE THEMING ===== */
:root {
  /* Colores principales */
  --color-azul-marino: #002D72;
  --color-azul-oscuro: #001E50;
  --color-dorado: #FFC200;
  --color-dorado-oscuro: #E5A800;
  
  /* Colores neutros */
  --color-blanco: #FFFFFF;
  --color-gris-fondo: #F5F7FA;
  --color-gris-texto: #4A4A4A;
  --color-negro: #1A1A1A;
  
  /* Colores del impacto quíntuple */
  --color-economico: #FFC200;
  --color-social: #002D72;
  --color-ambiental: #10B981;
  --color-cultural: #F97316;
  --color-humano: #EF4444;
  
  /* Tipografía */
  --font-titulos: 'Montserrat', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-cuerpo: 'Open Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  
  /* Tamaños de fuente */
  --text-xs: 0.75rem;    /* 12px */
  --text-sm: 0.875rem;   /* 14px */
  --text-base: 1rem;     /* 16px */
  --text-lg: 1.125rem;   /* 18px */
  --text-xl: 1.25rem;    /* 20px */
  --text-2xl: 1.5rem;    /* 24px */
  --text-3xl: 1.875rem;  /* 30px */
  --text-4xl: 2.25rem;   /* 36px */
  --text-5xl: 3rem;      /* 48px */
  --text-6xl: 3.75rem;   /* 60px */
  
  /* Espaciado */
  --spacing-xs: 0.5rem;   /* 8px */
  --spacing-sm: 1rem;     /* 16px */
  --spacing-md: 1.5rem;   /* 24px */
  --spacing-lg: 2rem;     /* 32px */
  --spacing-xl: 3rem;     /* 48px */
  --spacing-2xl: 4rem;    /* 64px */
  --spacing-3xl: 6rem;    /* 96px */
  
  /* Sombras */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
  --shadow-dorado: 0 4px 15px rgba(255, 194, 0, 0.3);
  
  /* Bordes */
  --border-radius-sm: 0.375rem;  /* 6px */
  --border-radius-md: 0.5rem;    /* 8px */
  --border-radius-lg: 0.75rem;   /* 12px */
  --border-radius-xl: 1rem;      /* 16px */
  --border-radius-full: 9999px;
  
  /* Transiciones */
  --transition-fast: 150ms ease-in-out;
  --transition-normal: 300ms ease-in-out;
  --transition-slow: 500ms ease-in-out;
  
  /* Layout */
  --max-width-container: 1280px;
  --header-height: 80px;
  --header-height-scroll: 70px;
}

/* ===== RESET Y BASE ===== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

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

body {
  font-family: var(--font-cuerpo);
  font-size: var(--text-base);
  line-height: 1.6;
  color: var(--color-gris-texto);
  background-color: var(--color-blanco);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

h1 {
  font-size: var(--text-5xl);
  font-weight: 800;
}

h2 {
  font-size: var(--text-4xl);
  font-weight: 700;
  position: relative;
  padding-bottom: var(--spacing-sm);
}

/* Línea decorativa dorada bajo H2 */
h2.decorated::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 60px;
  height: 4px;
  background: linear-gradient(to right, var(--color-dorado), var(--color-dorado-oscuro));
  border-radius: 2px;
}

h2.decorated.centered::after {
  left: 50%;
  transform: translateX(-50%);
}

h3 {
  font-size: var(--text-3xl);
  font-weight: 600;
}

h4 {
  font-size: var(--text-2xl);
  font-weight: 600;
}

h5 {
  font-size: var(--text-xl);
  font-weight: 600;
}

h6 {
  font-size: var(--text-lg);
  font-weight: 600;
}

p {
  margin-bottom: var(--spacing-sm);
  line-height: 1.7;
}

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

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

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

.section {
  padding: var(--spacing-3xl) 0;
  position: relative;
}

.section-sm {
  padding: var(--spacing-2xl) 0;
}

.section-lg {
  padding: calc(var(--spacing-3xl) * 1.5) 0;
}

/* Fondos de sección */
.section-white {
  background-color: var(--color-blanco);
}

.section-gray {
  background-color: var(--color-gris-fondo);
  position: relative;
}

/* Patrón de estrellas europeas sutil en fondo */
.section-gray::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image: 
    radial-gradient(circle, rgba(0, 45, 114, 0.03) 1px, transparent 1px);
  background-size: 50px 50px;
  pointer-events: none;
}

.section-blue {
  background: linear-gradient(135deg, var(--color-azul-oscuro) 0%, var(--color-azul-marino) 100%);
  color: var(--color-blanco);
}

.section-blue h1,
.section-blue h2,
.section-blue h3,
.section-blue h4,
.section-blue h5,
.section-blue h6 {
  color: var(--color-blanco);
}

/* ===== BOTONES ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-xs);
  padding: 0.875rem 2rem;
  font-family: var(--font-titulos);
  font-size: var(--text-base);
  font-weight: 600;
  text-decoration: none;
  border-radius: var(--border-radius-lg);
  border: 2px solid transparent;
  cursor: pointer;
  transition: all var(--transition-normal);
  white-space: nowrap;
  text-align: center;
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-dorado) 0%, var(--color-dorado-oscuro) 100%);
  color: var(--color-azul-oscuro);
  border-color: var(--color-dorado);
  box-shadow: var(--shadow-dorado);
}

.btn-primary:hover {
  background: var(--color-dorado-oscuro);
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(255, 194, 0, 0.4);
  color: var(--color-azul-oscuro);
}

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

.btn-secondary:hover {
  background: var(--color-azul-marino);
  color: var(--color-blanco);
  transform: translateY(-2px);
}

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

.btn-outline-white:hover {
  background: var(--color-blanco);
  color: var(--color-azul-marino);
}

.btn-lg {
  padding: 1.125rem 2.5rem;
  font-size: var(--text-lg);
}

.btn-sm {
  padding: 0.625rem 1.5rem;
  font-size: var(--text-sm);
}

/* ===== CARDS ===== */
.card {
  background: var(--color-blanco);
  border-radius: var(--border-radius-xl);
  padding: var(--spacing-lg);
  box-shadow: var(--shadow-md);
  transition: all var(--transition-normal);
  border: 2px solid transparent;
  height: 100%;
}

.card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-xl);
  border-color: var(--color-dorado);
}

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

.card-title {
  font-size: var(--text-2xl);
  margin-bottom: var(--spacing-sm);
  color: var(--color-azul-oscuro);
}

.card-icon {
  width: 60px;
  height: 60px;
  margin-bottom: var(--spacing-md);
  color: var(--color-dorado);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.5rem;
}

.card-body {
  color: var(--color-gris-texto);
  line-height: 1.7;
}

.card-footer {
  margin-top: var(--spacing-md);
  padding-top: var(--spacing-md);
  border-top: 1px solid rgba(0, 45, 114, 0.1);
}

/* ===== BADGES ===== */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  padding: 0.375rem 0.875rem;
  font-size: var(--text-sm);
  font-weight: 600;
  font-family: var(--font-titulos);
  border-radius: var(--border-radius-full);
  background: var(--color-gris-fondo);
  color: var(--color-azul-marino);
  white-space: nowrap;
}

.badge-erasmus {
  background: #003399;
  color: var(--color-blanco);
}

.badge-ces {
  background: #0066CC;
  color: var(--color-blanco);
}

.badge-interreg {
  background: #00AA50;
  color: var(--color-blanco);
}

.badge-life {
  background: #10B981;
  color: var(--color-blanco);
}

.badge-horizon {
  background: #E30613;
  color: var(--color-blanco);
}

.badge-miteco {
  background: #006341;
  color: var(--color-blanco);
}

.badge-aecid {
  background: #C1272D;
  color: var(--color-blanco);
}

/* ===== GRID SYSTEMS ===== */
.grid {
  display: grid;
  gap: var(--spacing-lg);
}

.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));
}

/* ===== SEPARADORES DE SECCIÓN (WAVES) ===== */
.wave-divider {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  overflow: hidden;
  line-height: 0;
}

.wave-divider svg {
  position: relative;
  display: block;
  width: calc(100% + 1.3px);
  height: 60px;
}

.wave-divider.top {
  bottom: auto;
  top: 0;
  transform: rotate(180deg);
}

/* ===== ANIMACIONES ===== */
@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

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

@keyframes fadeInDown {
  from {
    opacity: 0;
    transform: translateY(-30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

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

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

@keyframes pulse {
  0%, 100% {
    opacity: 1;
  }
  50% {
    opacity: 0.7;
  }
}

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

/* Clases de animación controladas por JavaScript */
.animate-on-scroll {
  opacity: 0;
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.animate-on-scroll.animated {
  opacity: 1;
  animation: fadeInUp 0.8s ease-out forwards;
}

/* ===== UTILIDADES ===== */
.text-center {
  text-align: center;
}

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

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

.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); }
.mb-6 { margin-bottom: var(--spacing-2xl); }

.mt-0 { margin-top: 0; }
.mt-1 { margin-top: var(--spacing-xs); }
.mt-2 { margin-top: var(--spacing-sm); }
.mt-3 { margin-top: var(--spacing-md); }
.mt-4 { margin-top: var(--spacing-lg); }
.mt-5 { margin-top: var(--spacing-xl); }
.mt-6 { margin-top: var(--spacing-2xl); }

.color-azul { color: var(--color-azul-marino); }
.color-dorado { color: var(--color-dorado); }
.color-blanco { color: var(--color-blanco); }

.fw-light { font-weight: 300; }
.fw-normal { font-weight: 400; }
.fw-medium { font-weight: 500; }
.fw-semibold { font-weight: 600; }
.fw-bold { font-weight: 700; }
.fw-extrabold { font-weight: 800; }

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

/* ===== RESPONSIVE ===== */
@media (max-width: 1024px) {
  :root {
    --text-5xl: 2.5rem;
    --text-4xl: 2rem;
    --text-3xl: 1.75rem;
    --spacing-3xl: 4rem;
  }
  
  .section {
    padding: var(--spacing-2xl) 0;
  }
}

@media (max-width: 768px) {
  :root {
    --text-5xl: 2rem;
    --text-4xl: 1.75rem;
    --text-3xl: 1.5rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 3rem;
    --header-height: 70px;
  }
  
  .container {
    padding: 0 var(--spacing-sm);
  }
  
  .grid-2,
  .grid-3,
  .grid-4 {
    grid-template-columns: 1fr;
  }
  
  .section {
    padding: var(--spacing-xl) 0;
  }
  
  h2.decorated::after {
    width: 40px;
    height: 3px;
  }
  
  .btn {
    width: 100%;
    justify-content: center;
  }
}

@media (max-width: 480px) {
  :root {
    --text-5xl: 1.75rem;
    --text-4xl: 1.5rem;
    --text-3xl: 1.25rem;
  }
}