/* ============================================================
   VARIABLES GLOBALES — Pasaporte Textil
   ============================================================ */

:root {
  /* --- Paleta de colores --- */
  --color-primary:        #1a5c3a;
  --color-primary-dark:   #134429;
  --color-primary-light:  #2d8a58;
  --color-secondary:      #0d3d5c;
  --color-secondary-dark: #082a40;
  --color-accent:         #e8a020;
  --color-accent-dark:    #c4851a;
  --color-surface:        #f5f7f2;
  --color-surface-dark:   #eaede5;
  --color-white:          #ffffff;
  --color-text-primary:   #1a1a1a;
  --color-text-secondary: #4a5568;
  --color-border:         #e2e8f0;
  --color-success:        #22c55e;
  --color-error:          #ef4444;

  /* --- Tipografía --- */
  --font-sans:  'Inter', system-ui, -apple-system, sans-serif;
  --font-mono:  'JetBrains Mono', 'Fira Code', monospace;

  --text-xs:    clamp(0.75rem,  1.2vw, 0.875rem);
  --text-sm:    clamp(0.875rem, 1.4vw, 1rem);
  --text-base:  clamp(1rem,     1.6vw, 1.125rem);
  --text-lg:    clamp(1.125rem, 1.8vw, 1.25rem);
  --text-xl:    clamp(1.25rem,  2vw,   1.5rem);
  --text-2xl:   clamp(1.5rem,   2.5vw, 2rem);
  --text-3xl:   clamp(1.75rem,  3vw,   2.5rem);
  --text-4xl:   clamp(2rem,     4vw,   3rem);
  --text-hero:  clamp(2.25rem,  5vw,   3.75rem);

  --font-normal:   400;
  --font-medium:   500;
  --font-semibold: 600;
  --font-bold:     700;
  --font-extrabold:800;

  --leading-tight:  1.2;
  --leading-snug:   1.35;
  --leading-normal: 1.6;
  --leading-relaxed:1.75;

  /* --- Espaciado --- */
  --space-1:  0.25rem;
  --space-2:  0.5rem;
  --space-3:  0.75rem;
  --space-4:  1rem;
  --space-5:  1.25rem;
  --space-6:  1.5rem;
  --space-8:  2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;
  --space-section: clamp(4rem, 8vw, 7rem);

  /* --- Layout --- */
  --container-max:  1200px;
  --container-pad:  clamp(1rem, 5vw, 2rem);
  --header-height:  72px;

  /* --- Bordes y sombras --- */
  --radius-sm:  6px;
  --radius-md:  12px;
  --radius-lg:  20px;
  --radius-full:9999px;

  --shadow-sm:  0 1px 3px rgba(0,0,0,0.08), 0 1px 2px rgba(0,0,0,0.04);
  --shadow-md:  0 4px 16px rgba(0,0,0,0.08), 0 2px 6px rgba(0,0,0,0.04);
  --shadow-lg:  0 8px 32px rgba(0,0,0,0.10), 0 4px 12px rgba(0,0,0,0.06);
  --shadow-xl:  0 20px 60px rgba(0,0,0,0.12), 0 8px 20px rgba(0,0,0,0.08);

  /* --- Transiciones --- */
  --transition-fast:   150ms ease;
  --transition-normal: 250ms ease;
  --transition-slow:   400ms ease;

  /* --- Z-index --- */
  --z-header:  100;
  --z-overlay: 200;
  --z-modal:   300;
}


/* ============================================================
   RESET MODERNO — basado en Andy Bell's CSS Reset
   ============================================================ */

*, *::before, *::after {
  box-sizing: border-box;
}

* {
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  tab-size: 4;
}

body {
  min-height: 100vh;
  line-height: var(--leading-normal);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img, picture, video, canvas, svg {
  display: block;
  max-width: 100%;
}

input, button, textarea, select {
  font: inherit;
}

p, h1, h2, h3, h4, h5, h6 {
  overflow-wrap: break-word;
}

h1, h2, h3, h4, h5, h6 {
  line-height: var(--leading-tight);
}

ul[role='list'],
ol[role='list'] {
  list-style: none;
}

a {
  color: inherit;
  text-decoration: none;
}

button {
  cursor: pointer;
  border: none;
  background: none;
}

:focus-visible {
  outline: 2px solid var(--color-primary-light);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

/* Skip link accesibilidad */
.skip-link {
  position: absolute;
  top: -100%;
  left: var(--space-4);
  z-index: calc(var(--z-header) + 10);
  padding: var(--space-3) var(--space-6);
  background: var(--color-primary);
  color: var(--color-white);
  font-weight: var(--font-semibold);
  border-radius: var(--radius-md);
  transition: top var(--transition-fast);
}

.skip-link:focus {
  top: var(--space-4);
}


/* ============================================================
   BASE — Estilos globales de elementos
   ============================================================ */

body {
  font-family: var(--font-sans);
  font-size: var(--text-base);
  color: var(--color-text-primary);
  background-color: var(--color-white);
}

/* --- Headings --- */
h1 { font-size: var(--text-hero);  font-weight: var(--font-extrabold); }
h2 { font-size: var(--text-3xl);   font-weight: var(--font-bold); }
h3 { font-size: var(--text-xl);    font-weight: var(--font-semibold); }
h4 { font-size: var(--text-lg);    font-weight: var(--font-semibold); }

/* --- Párrafos y texto --- */
p {
  color: var(--color-text-secondary);
  line-height: var(--leading-relaxed);
}

p + p {
  margin-top: var(--space-4);
}

strong {
  font-weight: var(--font-semibold);
  color: var(--color-text-primary);
}

/* --- Links --- */
a {
  transition: color var(--transition-fast), opacity var(--transition-fast);
}

a:hover {
  opacity: 0.85;
}

/* --- Listas --- */
ul, ol {
  padding-left: var(--space-6);
}

li {
  margin-bottom: var(--space-2);
  color: var(--color-text-secondary);
  line-height: var(--leading-relaxed);
}

/* --- Sección título común --- */
.section-label {
  display: inline-block;
  font-size: var(--text-sm);
  font-weight: var(--font-semibold);
  color: var(--color-primary);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: var(--space-3);
}

.section-title {
  color: var(--color-text-primary);
  margin-bottom: var(--space-5);
}

.section-title span {
  color: var(--color-primary);
}

.section-desc {
  font-size: var(--text-lg);
  max-width: 680px;
  color: var(--color-text-secondary);
}

/* --- Utilidades de texto --- */
.text-center  { text-align: center; }
.text-left    { text-align: left; }
.text-white   { color: var(--color-white) !important; }
.text-primary { color: var(--color-primary) !important; }
.text-accent  { color: var(--color-accent) !important; }

/* --- Animaciones base --- */
.fade-in-up {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in-up.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Delay utilities para animaciones en cadena */
.delay-1 { transition-delay: 0.1s; }
.delay-2 { transition-delay: 0.2s; }
.delay-3 { transition-delay: 0.3s; }
.delay-4 { transition-delay: 0.4s; }
.delay-5 { transition-delay: 0.5s; }


/* ============================================================
   LAYOUT — Grid, contenedores, header, footer
   ============================================================ */

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

.container--narrow {
  max-width: 800px;
}

.container--wide {
  max-width: 1400px;
}

/* --- Secciones --- */
section {
  padding-block: var(--space-section);
}

.section--light  { background-color: var(--color-white); }
.section--surface{ background-color: var(--color-surface); }
.section--dark   { background-color: var(--color-primary); color: var(--color-white); }
.section--navy   { background-color: var(--color-secondary); color: var(--color-white); }

/* --- Grid de 2 columnas --- */
.grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-8);
  align-items: start;
}

/* --- Grid de 3 columnas --- */
.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-8);
}

/* --- Grid de 4 columnas --- */
.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-6);
}

/* --- Grid auto-fill responsive --- */
.grid-auto {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: var(--space-8);
}

/* --- Flex utilities --- */
.flex        { display: flex; }
.flex-center { display: flex; align-items: center; justify-content: center; }
.flex-between{ display: flex; align-items: center; justify-content: space-between; }
.flex-col    { display: flex; flex-direction: column; }
.gap-4       { gap: var(--space-4); }
.gap-6       { gap: var(--space-6); }
.gap-8       { gap: var(--space-8); }

/* ============================================================
   HEADER
   ============================================================ */

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-header);
  height: var(--header-height);
  display: flex;
  align-items: center;
  background-color: transparent;
  transition: background-color var(--transition-normal),
              box-shadow var(--transition-normal);
}

.site-header.scrolled {
  background-color: var(--color-primary-dark);
  box-shadow: var(--shadow-md);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
}

/* Logo */
.site-logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
  flex-shrink: 0;
}

.site-logo__icon {
  width: 36px;
  height: 36px;
  background: var(--color-accent);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  font-weight: var(--font-extrabold);
  color: var(--color-primary-dark);
  flex-shrink: 0;
}

.site-logo__text {
  font-size: var(--text-lg);
  font-weight: var(--font-bold);
  color: var(--color-white);
  line-height: 1.1;
}

.site-logo__text span {
  display: block;
  font-size: var(--text-xs);
  font-weight: var(--font-normal);
  opacity: 0.8;
  letter-spacing: 0.03em;
}

/* Navegación principal */
.site-nav {
  display: flex;
  align-items: center;
  gap: var(--space-8);
}

.nav-list {
  display: flex;
  align-items: center;
  gap: var(--space-6);
  list-style: none;
  padding: 0;
  margin: 0;
}

.nav-list a {
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  color: rgba(255,255,255,0.88);
  transition: color var(--transition-fast);
  white-space: nowrap;
}

.nav-list a:hover {
  color: var(--color-white);
  opacity: 1;
}

/* Menú móvil — oculto por defecto en escritorio */
.mobile-menu {
  display: none;
}

/* Botón menú hamburguesa */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  padding: var(--space-2);
  cursor: pointer;
  background: none;
  border: none;
}

.nav-toggle__bar {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--color-white);
  border-radius: var(--radius-full);
  transition: transform var(--transition-normal), opacity var(--transition-normal);
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(2) {
  opacity: 0;
}
.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ============================================================
   FOOTER
   ============================================================ */

.site-footer {
  background-color: var(--color-primary-dark);
  color: var(--color-white);
  padding-block: var(--space-16) var(--space-8);
}

.footer-top {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: var(--space-12);
  padding-bottom: var(--space-10);
  border-bottom: 1px solid rgba(255,255,255,0.12);
}

.footer-brand p {
  margin-top: var(--space-4);
  font-size: var(--text-sm);
  color: rgba(255,255,255,0.7);
  line-height: var(--leading-relaxed);
  max-width: 320px;
}

.footer-col h3 {
  font-size: var(--text-sm);
  font-weight: var(--font-semibold);
  color: var(--color-accent);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: var(--space-5);
}

.footer-nav {
  list-style: none;
  padding: 0;
  margin: 0;
}

.footer-nav li {
  margin-bottom: var(--space-3);
}

.footer-nav a {
  font-size: var(--text-sm);
  color: rgba(255,255,255,0.7);
  transition: color var(--transition-fast);
}

.footer-nav a:hover {
  color: var(--color-white);
  opacity: 1;
}

.footer-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.15);
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  color: rgba(255,255,255,0.8);
  margin-top: var(--space-4);
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--space-8);
  flex-wrap: wrap;
  gap: var(--space-4);
}

.footer-bottom p {
  font-size: var(--text-xs);
  color: rgba(255,255,255,0.75);
}

.footer-legal {
  display: flex;
  gap: var(--space-6);
  list-style: none;
  padding: 0;
  margin: 0;
}

.footer-legal a {
  font-size: var(--text-xs);
  color: rgba(255,255,255,0.75);
  transition: color var(--transition-fast);
}

.footer-legal a:hover {
  color: var(--color-white);
  opacity: 1;
}


/* ============================================================
   COMPONENTS — Botones, cards, badges, tags
   ============================================================ */

/* ---- BOTONES ---- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-4) var(--space-8);
  font-size: var(--text-base);
  font-weight: var(--font-semibold);
  line-height: 1;
  border-radius: var(--radius-full);
  text-decoration: none;
  transition: background-color var(--transition-fast),
              color var(--transition-fast),
              box-shadow var(--transition-fast),
              transform var(--transition-fast);
  cursor: pointer;
  border: 2px solid transparent;
  white-space: nowrap;
}

.btn:hover {
  opacity: 1;
  transform: translateY(-1px);
}

.btn:active {
  transform: translateY(0);
}

/* Primario */
.btn-primary {
  background-color: var(--color-primary);
  color: var(--color-white);
  border-color: var(--color-primary);
}

.btn-primary:hover {
  background-color: var(--color-primary-dark);
  border-color: var(--color-primary-dark);
  box-shadow: 0 6px 20px rgba(26,92,58,0.3);
  color: var(--color-white);
}

/* Primario en fondo oscuro (invertido) */
.btn-primary-inv {
  background-color: var(--color-white);
  color: var(--color-primary);
  border-color: var(--color-white);
}

.btn-primary-inv:hover {
  background-color: var(--color-surface);
  border-color: var(--color-surface);
  box-shadow: 0 6px 20px rgba(0,0,0,0.2);
  color: var(--color-primary-dark);
}

/* Secundario / outline */
.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);
  box-shadow: 0 6px 20px rgba(26,92,58,0.2);
}

/* Outline blanco (sobre fondo oscuro) */
.btn-outline-white {
  background-color: transparent;
  color: var(--color-white);
  border-color: rgba(255,255,255,0.6);
}

.btn-outline-white:hover {
  background-color: rgba(255,255,255,0.12);
  border-color: var(--color-white);
  color: var(--color-white);
}

/* Acento */
.btn-accent {
  background-color: var(--color-accent);
  color: var(--color-text-primary);
  border-color: var(--color-accent);
}

.btn-accent:hover {
  background-color: var(--color-accent-dark);
  border-color: var(--color-accent-dark);
  box-shadow: 0 6px 20px rgba(232,160,32,0.3);
  color: var(--color-text-primary);
}

/* Tamaños */
.btn-sm {
  padding: var(--space-3) var(--space-6);
  font-size: var(--text-sm);
}

.btn-lg {
  padding: var(--space-5) var(--space-10);
  font-size: var(--text-lg);
}


/* ---- CARDS ---- */

.card {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-8);
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition-normal),
              transform var(--transition-normal),
              border-color var(--transition-normal);
}

.card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-3px);
  border-color: var(--color-primary-light);
}

.card__icon {
  width: 52px;
  height: 52px;
  background: var(--color-surface);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-5);
  flex-shrink: 0;
}

.card__icon svg {
  width: 26px;
  height: 26px;
  color: var(--color-primary);
}

.card__title {
  font-size: var(--text-xl);
  font-weight: var(--font-semibold);
  color: var(--color-text-primary);
  margin-bottom: var(--space-3);
}

.card__desc {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  line-height: var(--leading-relaxed);
}

/* Card destacada */
.card--featured {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  border-color: transparent;
  color: var(--color-white);
}

.card--featured .card__title,
.card--featured .card__desc {
  color: var(--color-white);
}

.card--featured .card__icon {
  background: rgba(255,255,255,0.15);
}

.card--featured .card__icon svg {
  color: var(--color-white);
}

.card--featured:hover {
  border-color: transparent;
  box-shadow: 0 12px 40px rgba(26,92,58,0.35);
}


/* ---- BADGES ---- */

.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-1) var(--space-3);
  font-size: var(--text-xs);
  font-weight: var(--font-semibold);
  border-radius: var(--radius-full);
  letter-spacing: 0.03em;
  text-transform: uppercase;
}

.badge-primary {
  background: rgba(26,92,58,0.1);
  color: var(--color-primary);
}

.badge-accent {
  background: rgba(232,160,32,0.15);
  color: #a06800;
}

.badge-white {
  background: rgba(255,255,255,0.15);
  color: var(--color-white);
}

.badge-urgency {
  background: var(--color-accent);
  color: var(--color-text-primary);
  font-size: var(--text-xs);
  padding: var(--space-2) var(--space-4);
  box-shadow: 0 2px 8px rgba(232,160,32,0.35);
}


/* ---- STAT BLOCK ---- */

.stat-block {
  text-align: center;
  padding: var(--space-6);
}

.stat-number {
  font-size: var(--text-4xl);
  font-weight: var(--font-extrabold);
  color: var(--color-primary);
  line-height: 1;
  display: block;
}

.stat-label {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  margin-top: var(--space-2);
  line-height: var(--leading-normal);
}


/* ---- CHECKLIST ---- */

.checklist {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.checklist li {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  font-size: var(--text-base);
  color: var(--color-text-secondary);
  margin: 0;
}

.checklist li::before {
  content: '';
  display: block;
  width: 20px;
  height: 20px;
  min-width: 20px;
  background: var(--color-primary);
  border-radius: 50%;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20' fill='white'%3E%3Cpath fill-rule='evenodd' d='M16.707 5.293a1 1 0 010 1.414l-8 8a1 1 0 01-1.414 0l-4-4a1 1 0 011.414-1.414L8 12.586l7.293-7.293a1 1 0 011.414 0z' clip-rule='evenodd'/%3E%3C/svg%3E");
  background-size: 12px;
  background-repeat: no-repeat;
  background-position: center;
  margin-top: 2px;
  flex-shrink: 0;
}

/* Checklist blanco (sobre fondo oscuro) */
.checklist--white li {
  color: rgba(255,255,255,0.9);
}

.checklist--white li::before {
  background-color: rgba(255,255,255,0.25);
}


/* ---- TIMELINE ---- */

.timeline {
  display: flex;
  gap: 0;
  position: relative;
  counter-reset: timeline;
}

.timeline::before {
  content: '';
  position: absolute;
  top: 28px;
  left: 14px;
  right: 14px;
  height: 2px;
  background: linear-gradient(to right, var(--color-primary), var(--color-accent));
  z-index: 0;
}

.timeline-item {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: var(--space-4);
  position: relative;
  z-index: 1;
}

.timeline-dot {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--color-white);
  border: 3px solid var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  box-shadow: 0 0 0 4px var(--color-surface);
}

.timeline-item.active .timeline-dot {
  background: var(--color-primary);
  border-color: var(--color-primary);
}

.timeline-item.milestone .timeline-dot {
  background: var(--color-accent);
  border-color: var(--color-accent);
  width: 34px;
  height: 34px;
  box-shadow: 0 0 0 4px rgba(232,160,32,0.2);
}

.timeline-year {
  font-size: var(--text-xl);
  font-weight: var(--font-bold);
  color: var(--color-primary);
}

.timeline-item.milestone .timeline-year {
  color: var(--color-accent-dark);
}

.timeline-desc {
  font-size: var(--text-xs);
  color: var(--color-text-secondary);
  line-height: var(--leading-normal);
  max-width: 120px;
}


/* ---- DIVIDER ---- */

.divider {
  border: none;
  border-top: 1px solid var(--color-border);
  margin-block: var(--space-8);
}