/* ============================================================
   CÍRCULO DE FUEGO — DESIGN SYSTEM
   Propuesta B · AUSTRAL
   v1.0 · Mayo 2026
   --------------------------------------------------------------
   Base tokens, reset, tipografía, componentes primitivos.
   Importar PRIMERO en cualquier página: <link rel="stylesheet" href="/css/design-system.css">
============================================================ */

/* ============================================================
   1. DESIGN TOKENS
============================================================ */
:root {
  /* -- COLORES PRIMARIOS -------------------------------------- */
  --cf-tierra:        #3D3028;   /* textos principales, footer */
  --cf-terracota:     #B85042;   /* acento principal, CTAs */
  --cf-terracota-dk:  #943D31;   /* hover terracota */
  --cf-salvia:        #5B7B6A;   /* acento natural, secundario */
  --cf-salvia-dk:     #3D5C4C;   /* hover salvia */

  /* -- COLORES SECUNDARIOS ------------------------------------ */
  --cf-arena:         #F2EDE4;   /* fondo principal */
  --cf-arena-dk:      #E8E0D2;   /* fondo alterno */
  --cf-miel:          #D4A574;   /* detalles cálidos */
  --cf-lino:          #E7DDD1;   /* fondos secundarios */

  /* -- SOPORTE ------------------------------------------------ */
  --cf-negro:         #1A1A1A;   /* secciones dark, alto contraste */
  --cf-negro-soft:    #2D2D2D;
  --cf-fuego:         #D4602A;   /* alerta/destaque puntual */
  --cf-blanco:        #FFFFFF;
  --cf-texto-muted:   #7A6B5D;   /* texto secundario */
  --cf-borde:         #DDD5C8;   /* bordes sutiles */
  --cf-borde-light:   rgba(61, 48, 40, 0.08);
  --cf-borde-dark:    rgba(255, 255, 255, 0.12);

  /* -- TIPOGRAFÍA --------------------------------------------- */
  --cf-ff-serif:  'Lora', 'Cambria', Georgia, 'Times New Roman', serif;
  --cf-ff-sans:   'Inter', 'Calibri', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
  --cf-ff-mono:   ui-monospace, 'SF Mono', Menlo, Monaco, Consolas, monospace;

  /* Escala (clamp para fluido) */
  --cf-fs-eyebrow:  0.72rem;                          /* 11.5px */
  --cf-fs-caption:  0.8125rem;                        /* 13px */
  --cf-fs-small:    0.875rem;                         /* 14px */
  --cf-fs-body:     1rem;                             /* 16px */
  --cf-fs-lead:     clamp(1.0625rem, 1.4vw, 1.25rem); /* 17–20px */
  --cf-fs-h4:       clamp(1.125rem, 1.6vw, 1.375rem); /* 18–22px */
  --cf-fs-h3:       clamp(1.375rem, 2.2vw, 1.75rem);  /* 22–28px */
  --cf-fs-h2:       clamp(1.875rem, 3.6vw, 2.75rem);  /* 30–44px */
  --cf-fs-h1:       clamp(2.5rem, 5.2vw, 4rem);       /* 40–64px */
  --cf-fs-display:  clamp(2.8rem, 6.5vw, 5rem);       /* 45–80px (hero gigante) */

  /* Pesos */
  --cf-fw-light:   300;
  --cf-fw-regular: 400;
  --cf-fw-medium:  500;
  --cf-fw-semi:    600;
  --cf-fw-bold:    700;

  /* Line-heights */
  --cf-lh-tight:   1.12;
  --cf-lh-snug:    1.25;
  --cf-lh-normal:  1.5;
  --cf-lh-relaxed: 1.65;

  /* Letter-spacing */
  --cf-ls-tight:   -0.02em;
  --cf-ls-normal:   0;
  --cf-ls-wide:     0.05em;
  --cf-ls-eyebrow:  0.18em;

  /* -- ESPACIADO (8pt grid) ----------------------------------- */
  --cf-sp-4:    4px;
  --cf-sp-8:    8px;
  --cf-sp-12:  12px;
  --cf-sp-16:  16px;
  --cf-sp-20:  20px;
  --cf-sp-24:  24px;
  --cf-sp-32:  32px;
  --cf-sp-40:  40px;
  --cf-sp-48:  48px;
  --cf-sp-64:  64px;
  --cf-sp-80:  80px;
  --cf-sp-96:  96px;
  --cf-sp-120: 120px;
  --cf-sp-160: 160px;

  /* Espacios verticales de sección (responsive) */
  --cf-section-y:    clamp(64px, 8vw, 120px);
  --cf-section-y-sm: clamp(40px, 5vw, 64px);

  /* -- RADIUS ------------------------------------------------- */
  --cf-r-sm:    4px;
  --cf-r-md:    6px;   /* default cards */
  --cf-r-lg:   12px;
  --cf-r-xl:   20px;
  --cf-r-pill: 9999px;

  /* -- SOMBRAS (tintadas tierra) ------------------------------ */
  --cf-shadow-xs: 0 1px 2px rgba(61, 48, 40, 0.06);
  --cf-shadow-sm: 0 2px 8px rgba(61, 48, 40, 0.08);
  --cf-shadow-md: 0 8px 24px rgba(61, 48, 40, 0.12);
  --cf-shadow-lg: 0 24px 64px rgba(61, 48, 40, 0.16);
  --cf-shadow-focus: 0 0 0 3px rgba(184, 80, 66, 0.32);

  /* -- TRANSICIONES ------------------------------------------- */
  --cf-ease:        cubic-bezier(0.4, 0, 0.2, 1);
  --cf-transition:  0.22s var(--cf-ease);
  --cf-transition-slow: 0.4s var(--cf-ease);

  /* -- LAYOUT ------------------------------------------------- */
  --cf-container:    1200px;
  --cf-container-md:  900px;
  --cf-container-sm:  720px;
  --cf-container-xs:  560px;
  --cf-gutter:       clamp(20px, 4vw, 32px);

  /* -- Z-INDEX ------------------------------------------------ */
  --cf-z-base:    0;
  --cf-z-sticky: 100;
  --cf-z-nav:    200;
  --cf-z-modal:  900;
  --cf-z-toast:  999;
}

/* ============================================================
   2. RESET (mínimo + opinions)
============================================================ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html {
  -webkit-text-size-adjust: 100%;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  scroll-behavior: smooth;
  font-size: 16px;
  text-rendering: optimizeLegibility;
}
body {
  font-family: var(--cf-ff-sans);
  font-size: var(--cf-fs-body);
  line-height: var(--cf-lh-relaxed);
  color: var(--cf-tierra);
  background: var(--cf-arena);
  overflow-x: hidden;
  min-height: 100vh;
}
img, svg, video {
  max-width: 100%;
  height: auto;
  display: block;
}
a {
  color: inherit;
  text-decoration: none;
  transition: color var(--cf-transition);
}
ul, ol { list-style: none; }
button, input, select, textarea {
  font: inherit;
  color: inherit;
}
button { background: none; border: none; cursor: pointer; }
:focus-visible {
  outline: 2px solid var(--cf-terracota);
  outline-offset: 3px;
  border-radius: var(--cf-r-sm);
}
::selection {
  background: var(--cf-terracota);
  color: var(--cf-blanco);
}

/* ============================================================
   3. TIPOGRAFÍA BASE
============================================================ */
h1, .t-h1 {
  font-family: var(--cf-ff-serif);
  font-size: var(--cf-fs-h1);
  font-weight: var(--cf-fw-semi);
  line-height: var(--cf-lh-tight);
  letter-spacing: var(--cf-ls-tight);
  color: var(--cf-tierra);
}
h2, .t-h2 {
  font-family: var(--cf-ff-serif);
  font-size: var(--cf-fs-h2);
  font-weight: var(--cf-fw-medium);
  line-height: var(--cf-lh-snug);
  letter-spacing: var(--cf-ls-tight);
  color: var(--cf-tierra);
}
h3, .t-h3 {
  font-family: var(--cf-ff-serif);
  font-size: var(--cf-fs-h3);
  font-weight: var(--cf-fw-medium);
  line-height: var(--cf-lh-snug);
  color: var(--cf-tierra);
}
h4, .t-h4 {
  font-family: var(--cf-ff-serif);
  font-size: var(--cf-fs-h4);
  font-weight: var(--cf-fw-medium);
  line-height: 1.35;
  color: var(--cf-tierra);
}
.t-display {
  font-family: var(--cf-ff-serif);
  font-size: var(--cf-fs-display);
  font-weight: var(--cf-fw-light);
  line-height: 1.05;
  letter-spacing: -0.025em;
  color: var(--cf-tierra);
}
.t-display em,
h1 em, h2 em, h3 em {
  font-style: italic;
  color: var(--cf-terracota);
  font-weight: inherit;
}
.t-eyebrow {
  display: inline-block;
  font-family: var(--cf-ff-sans);
  font-size: var(--cf-fs-eyebrow);
  font-weight: var(--cf-fw-semi);
  line-height: 1;
  letter-spacing: var(--cf-ls-eyebrow);
  text-transform: uppercase;
  color: var(--cf-terracota);
}
.t-lead {
  font-size: var(--cf-fs-lead);
  line-height: var(--cf-lh-relaxed);
  color: var(--cf-tierra);
  font-weight: var(--cf-fw-regular);
}
p, .t-body {
  font-size: var(--cf-fs-body);
  line-height: var(--cf-lh-relaxed);
  color: var(--cf-tierra);
}
.t-muted { color: var(--cf-texto-muted); }
.t-small {
  font-size: var(--cf-fs-small);
  line-height: var(--cf-lh-normal);
}
.t-caption {
  font-size: var(--cf-fs-caption);
  line-height: var(--cf-lh-normal);
  color: var(--cf-texto-muted);
}

/* Énfasis dentro de párrafos */
strong, b { font-weight: var(--cf-fw-semi); color: var(--cf-tierra); }
em, i     { font-style: italic; }

/* ============================================================
   4. LAYOUT — Container & Section
============================================================ */
.cf-container {
  width: 100%;
  max-width: var(--cf-container);
  margin: 0 auto;
  padding-left: var(--cf-gutter);
  padding-right: var(--cf-gutter);
}
.cf-container--md { max-width: var(--cf-container-md); }
.cf-container--sm { max-width: var(--cf-container-sm); }
.cf-container--xs { max-width: var(--cf-container-xs); }

.cf-section {
  padding-top:    var(--cf-section-y);
  padding-bottom: var(--cf-section-y);
}
.cf-section--sm {
  padding-top:    var(--cf-section-y-sm);
  padding-bottom: var(--cf-section-y-sm);
}
.cf-section--arena   { background: var(--cf-arena); }
.cf-section--arena-dk{ background: var(--cf-arena-dk); }
.cf-section--lino    { background: var(--cf-lino); }
.cf-section--salvia  { background: var(--cf-salvia); color: var(--cf-arena); }
.cf-section--salvia h1, .cf-section--salvia h2, .cf-section--salvia h3 { color: var(--cf-arena); }
.cf-section--tierra  { background: var(--cf-tierra); color: var(--cf-arena); }
.cf-section--tierra h1, .cf-section--tierra h2, .cf-section--tierra h3 { color: var(--cf-arena); }
.cf-section--negro   { background: var(--cf-negro); color: var(--cf-arena); }
.cf-section--negro h1, .cf-section--negro h2, .cf-section--negro h3 { color: var(--cf-arena); }

/* ============================================================
   5. BOTONES
============================================================ */
.cf-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--cf-sp-8);
  padding: 14px 28px;
  font-family: var(--cf-ff-sans);
  font-size: 0.9375rem;
  font-weight: var(--cf-fw-medium);
  line-height: 1;
  letter-spacing: 0.01em;
  border-radius: var(--cf-r-sm);
  border: 1px solid transparent;
  cursor: pointer;
  text-decoration: none;
  white-space: nowrap;
  transition: all var(--cf-transition);
  user-select: none;
}
.cf-btn:hover  { transform: translateY(-1px); }
.cf-btn:active { transform: translateY(0); }

/* Primario — Terracota sólido */
.cf-btn--primary {
  background: var(--cf-terracota);
  color: var(--cf-blanco);
  border-color: var(--cf-terracota);
  box-shadow: var(--cf-shadow-sm);
}
.cf-btn--primary:hover {
  background: var(--cf-terracota-dk);
  border-color: var(--cf-terracota-dk);
  box-shadow: var(--cf-shadow-md);
}

/* Secundario — Outline tierra */
.cf-btn--secondary {
  background: transparent;
  color: var(--cf-tierra);
  border-color: var(--cf-tierra);
}
.cf-btn--secondary:hover {
  background: var(--cf-tierra);
  color: var(--cf-arena);
}

/* Ghost — sin borde, solo texto con underline en hover */
.cf-btn--ghost {
  background: transparent;
  color: var(--cf-tierra);
  padding: 14px 8px;
}
.cf-btn--ghost:hover { color: var(--cf-terracota); }

/* Dark — para fondos claros, alto contraste */
.cf-btn--dark {
  background: var(--cf-tierra);
  color: var(--cf-arena);
  border-color: var(--cf-tierra);
}
.cf-btn--dark:hover {
  background: var(--cf-negro);
  border-color: var(--cf-negro);
}

/* Sobre fondo oscuro */
.cf-btn--on-dark {
  background: var(--cf-arena);
  color: var(--cf-tierra);
  border-color: var(--cf-arena);
}
.cf-btn--on-dark:hover {
  background: var(--cf-blanco);
}

/* Tamaños */
.cf-btn--lg { padding: 18px 36px; font-size: 1rem; }
.cf-btn--sm { padding: 10px 18px; font-size: 0.8125rem; }

/* ============================================================
   6. CARDS
============================================================ */
.cf-card {
  background: var(--cf-blanco);
  border: 1px solid var(--cf-borde);
  border-radius: var(--cf-r-md);
  padding: var(--cf-sp-32);
  transition: transform var(--cf-transition), box-shadow var(--cf-transition), border-color var(--cf-transition);
}
.cf-card--hover:hover {
  transform: translateY(-4px);
  box-shadow: var(--cf-shadow-md);
  border-color: var(--cf-miel);
}
.cf-card--lino { background: var(--cf-lino); border-color: transparent; }
.cf-card--arena{ background: var(--cf-arena-dk); border-color: transparent; }

/* ============================================================
   7. BADGES / TAGS
============================================================ */
.cf-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px;
  font-family: var(--cf-ff-sans);
  font-size: 0.6875rem;       /* 11px */
  font-weight: var(--cf-fw-semi);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  border-radius: var(--cf-r-pill);
  background: var(--cf-lino);
  color: var(--cf-tierra);
  border: 1px solid var(--cf-borde);
}
.cf-badge--terracota { background: rgba(184,80,66,0.12); color: var(--cf-terracota); border-color: transparent; }
.cf-badge--salvia    { background: rgba(91,123,106,0.14); color: var(--cf-salvia-dk); border-color: transparent; }
.cf-badge--miel      { background: rgba(212,165,116,0.20); color: #8B6D4B; border-color: transparent; }

/* ============================================================
   8. DIVIDERS
============================================================ */
.cf-divider {
  display: block;
  width: 100%;
  height: 1px;
  background: var(--cf-borde);
  border: 0;
  margin: var(--cf-sp-32) 0;
}
.cf-divider--short {
  width: 64px;
  height: 2px;
  background: var(--cf-terracota);
  margin: var(--cf-sp-24) 0;
}

/* ============================================================
   9. UTILIDADES
============================================================ */
/* Display */
.cf-block        { display: block; }
.cf-inline-block { display: inline-block; }
.cf-flex         { display: flex; }
.cf-inline-flex  { display: inline-flex; }
.cf-grid         { display: grid; }
.cf-hidden       { display: none !important; }

/* Flex helpers */
.cf-items-center  { align-items: center; }
.cf-items-start   { align-items: flex-start; }
.cf-items-end     { align-items: flex-end; }
.cf-justify-center { justify-content: center; }
.cf-justify-between{ justify-content: space-between; }
.cf-justify-end   { justify-content: flex-end; }
.cf-flex-col      { flex-direction: column; }
.cf-flex-wrap     { flex-wrap: wrap; }
.cf-gap-8         { gap: var(--cf-sp-8); }
.cf-gap-12        { gap: var(--cf-sp-12); }
.cf-gap-16        { gap: var(--cf-sp-16); }
.cf-gap-24        { gap: var(--cf-sp-24); }
.cf-gap-32        { gap: var(--cf-sp-32); }
.cf-gap-48        { gap: var(--cf-sp-48); }

/* Text align */
.cf-text-left   { text-align: left; }
.cf-text-center { text-align: center; }
.cf-text-right  { text-align: right; }
.cf-text-balance{ text-wrap: balance; }
.cf-text-pretty { text-wrap: pretty; }

/* Spacing — margin top (los más usados) */
.cf-mt-0  { margin-top: 0; }
.cf-mt-8  { margin-top: var(--cf-sp-8); }
.cf-mt-12 { margin-top: var(--cf-sp-12); }
.cf-mt-16 { margin-top: var(--cf-sp-16); }
.cf-mt-24 { margin-top: var(--cf-sp-24); }
.cf-mt-32 { margin-top: var(--cf-sp-32); }
.cf-mt-48 { margin-top: var(--cf-sp-48); }
.cf-mt-64 { margin-top: var(--cf-sp-64); }
.cf-mt-80 { margin-top: var(--cf-sp-80); }

.cf-mb-0  { margin-bottom: 0; }
.cf-mb-8  { margin-bottom: var(--cf-sp-8); }
.cf-mb-16 { margin-bottom: var(--cf-sp-16); }
.cf-mb-24 { margin-bottom: var(--cf-sp-24); }
.cf-mb-32 { margin-bottom: var(--cf-sp-32); }
.cf-mb-48 { margin-bottom: var(--cf-sp-48); }
.cf-mb-64 { margin-bottom: var(--cf-sp-64); }

/* Max-width inline */
.cf-mw-prose { max-width: 65ch; }
.cf-mw-sm    { max-width: 32rem; }
.cf-mw-md    { max-width: 42rem; }
.cf-mw-lg    { max-width: 56rem; }

/* Colores texto */
.cf-c-tierra    { color: var(--cf-tierra); }
.cf-c-terracota { color: var(--cf-terracota); }
.cf-c-salvia    { color: var(--cf-salvia); }
.cf-c-arena     { color: var(--cf-arena); }
.cf-c-muted     { color: var(--cf-texto-muted); }
.cf-c-blanco    { color: var(--cf-blanco); }

/* Visualmente oculto pero accesible (screen readers) */
.cf-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;
}

/* ============================================================
   10. GRID HELPERS — responsive
============================================================ */
.cf-grid--2 { grid-template-columns: repeat(2, 1fr); }
.cf-grid--3 { grid-template-columns: repeat(3, 1fr); }
.cf-grid--4 { grid-template-columns: repeat(4, 1fr); }
.cf-grid--auto-md {
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}
.cf-grid--auto-lg {
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
}

/* ============================================================
   11. MOTION — animaciones reutilizables
============================================================ */
@keyframes cf-fade-in {
  from { opacity: 0; transform: translateY(12px); }
  to   { opacity: 1; transform: translateY(0); }
}
.cf-fade-in {
  animation: cf-fade-in 0.6s var(--cf-ease) both;
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* ============================================================
   12. RESPONSIVE — Mobile First
   Breakpoints: 600 (tablet pequeña), 900 (tablet), 1200 (desktop)
============================================================ */
@media (max-width: 899px) {
  .cf-grid--2,
  .cf-grid--3,
  .cf-grid--4 { grid-template-columns: 1fr; }
  .cf-hide-mobile { display: none !important; }
}
@media (min-width: 900px) {
  .cf-hide-desktop { display: none !important; }
}
@media (max-width: 599px) {
  .cf-section { padding-top: var(--cf-sp-64); padding-bottom: var(--cf-sp-64); }
}

/* ============================================================
   FIN — design-system.css
============================================================ */