/* ==========================================================================
   1. TOKENS DE DISEÑO — mismos que el portfolio principal
   ========================================================================== */
:root {
  --color-bg: #FAF6F0;
  --color-bg-alt: #FFFFFF;
  --color-text: #2B2622;
  --color-text-muted: #6E6358;
  --color-accent: #7A2E33;
  --color-pill-bg: #E4DCD2;
  --color-border: #E4DCD2;

  --font-heading: "Fraunces", Georgia, serif;
  --font-body: "Inter", -apple-system, BlinkMacSystemFont, sans-serif;

  --space-1: 4px;
  --space-2: 8px;
  --space-3: 16px;
  --space-4: 24px;
  --space-5: 32px;
  --space-6: 48px;
  --space-7: 64px;

  --bp-tablet: 768px;
  --bp-desktop: 1440px;

  --transition-base: 200ms ease;
  --nav-width: 280px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.7;
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { animation: none !important; transition: none !important; }
}

/* ==========================================================================
   2. CABECERA
   ========================================================================== */
.site-header {
  max-width: 720px;
  margin: 0 auto;
  padding: var(--space-7) var(--space-4) var(--space-6);
  text-align: center;
}

.site-header__eyebrow {
  font-size: 14px;
  color: var(--color-text-muted);
  margin: 0 0 var(--space-2);
}

.site-header__title {
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 40px;
  line-height: 1.15;
  margin: 0 0 var(--space-3);
}

.site-header__lede {
  font-size: 18px;
  color: var(--color-text-muted);
  margin: 0 0 var(--space-4);
}

.site-header__cta {
  display: inline-block;
  font-family: var(--font-body);
  font-weight: 500;
  color: var(--color-accent);
  text-decoration: none;
  border: 1px solid var(--color-accent);
  border-radius: 4px;
  padding: 12px 24px;
  transition: background var(--transition-base), color var(--transition-base);
}

.site-header__cta:hover {
  background: var(--color-accent);
  color: var(--color-bg-alt);
}

.site-header__cta-secondary {
  display: block;
  width: fit-content;
  margin: var(--space-3) auto 0;
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 14px;
  color: var(--color-text-muted);
  text-decoration: none;
  border-bottom: 1px dotted var(--color-text-muted);
  transition: color var(--transition-base);
}

.site-header__cta-secondary:hover {
  color: var(--color-accent);
  border-bottom-color: var(--color-accent);
}

/* ==========================================================================
   3. LAYOUT — menú lateral sticky + contenido
   ========================================================================== */
.layout {
  display: flex;
  align-items: flex-start;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-4) var(--space-7);
  gap: var(--space-6);
}

.phase-nav {
  flex: 0 0 var(--nav-width);
  position: sticky;
  top: var(--space-4);
  max-height: calc(100vh - var(--space-4) * 2);
  overflow-y: auto;
}

.phases {
  flex: 1;
  min-width: 0;
}

.phase-nav__toggle {
  display: none;
  position: relative;
  z-index: 2;
  width: 100%;
  align-items: center;
  justify-content: space-between;
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  padding: var(--space-3);
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 15px;
  color: var(--color-text);
  cursor: pointer;
  margin-bottom: var(--space-3);
}

.phase-nav__toggle-icon {
  transition: transform var(--transition-base);
}

.phase-nav__toggle[aria-expanded="true"] .phase-nav__toggle-icon {
  transform: rotate(180deg);
}

@media (max-width: 999px) {
  .layout { flex-direction: column; align-items: stretch; }

  .phase-nav {
    position: sticky;
    top: 0;
    z-index: 60;
    width: 100%;
    max-height: none;
    background: var(--color-bg);
    padding: var(--space-3) 0;
    border-bottom: 1px solid var(--color-border);
  }

  .phase-nav__toggle {
    display: flex;
    margin-bottom: 0;
  }

  .phase-nav__list {
    position: absolute;
    z-index: 2;
    top: 100%;
    left: 0;
    right: 0;
    margin-top: var(--space-2);
    max-height: 70vh;
    overflow-y: auto;
    background: var(--color-bg-alt);
    border: 1px solid var(--color-border);
    border-radius: 12px;
    padding: 0 var(--space-3);
    box-shadow: 0 8px 24px rgba(43, 38, 34, 0.12);
    display: none;
  }

  .phase-nav__list.is-open {
    display: block;
  }

  .phase-nav__backdrop {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(43, 38, 34, 0.4);
    z-index: 1;
  }

  .phase-nav__backdrop.is-open {
    display: block;
  }
}

/* ==========================================================================
   4. MENÚ ACORDEÓN
   ========================================================================== */
.phase-nav__list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.phase-nav__item {
  border-bottom: 1px solid var(--color-border);
}

.phase-nav__link {
  display: flex;
  align-items: baseline;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-2);
  text-decoration: none;
  color: var(--color-text);
  font-weight: 500;
}

.phase-nav__number {
  font-family: var(--font-heading);
  font-size: 13px;
  color: var(--color-text-muted);
}

.phase-nav__label {
  font-size: 15px;
}

.phase-nav__item.is-active .phase-nav__link {
  color: var(--color-accent);
}

.phase-nav__item.is-active .phase-nav__number {
  color: var(--color-accent);
}

.phase-nav__sublist {
  list-style: none;
  margin: 0;
  padding: 0 var(--space-2) var(--space-3) calc(var(--space-2) + 28px);
  display: none;
  flex-direction: column;
  gap: var(--space-2);
}

.phase-nav__item.is-active .phase-nav__sublist {
  display: flex;
}

.phase-nav__sublist a {
  font-size: 14px;
  color: var(--color-text-muted);
  text-decoration: none;
}

.phase-nav__sublist a:hover {
  color: var(--color-accent);
}

/* ==========================================================================
   5. FASES Y SUBAPARTADOS
   ========================================================================== */
.phase {
  padding-top: var(--space-6);
  padding-bottom: var(--space-7);
  border-bottom: 1px solid var(--color-border);
  scroll-margin-top: var(--space-4);
}

.phase:last-child { border-bottom: none; }

.phase__eyebrow {
  font-size: 13px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  margin: 0 0 var(--space-2);
}

.phase__title {
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 32px;
  margin: 0 0 var(--space-4);
}

.phase__intro {
  font-size: 17px;
  color: var(--color-text-muted);
  max-width: 640px;
  margin: 0 0 var(--space-6);
}

.subsection {
  margin-bottom: var(--space-6);
  scroll-margin-top: var(--space-4);
}

.subsection__title {
  font-family: var(--font-heading);
  font-weight: 500;
  font-size: 22px;
  color: var(--color-accent);
  margin: 0 0 var(--space-3);
}

.subsection__lede {
  font-family: var(--font-heading);
  font-weight: 500;
  font-size: 20px;
  line-height: 1.5;
  color: var(--color-text);
  margin: 0 0 var(--space-4);
}

.phase__placeholder {
  color: var(--color-text-muted);
  font-style: italic;
}

/* ==========================================================================
   6. GLOSARIO — tejido y bloque
   ========================================================================== */
.term {
  color: var(--color-accent);
  font-weight: 500;
  cursor: pointer;
  border-bottom: 1px dotted var(--color-accent);
}

.color-swatch {
  display: inline-block;
  width: 14px;
  height: 14px;
  border-radius: 4px;
  border: 1px solid rgba(43, 38, 34, 0.15);
  margin-right: 6px;
  vertical-align: middle;
}

code {
  font-family: "SF Mono", "Consolas", monospace;
  font-size: 0.9em;
  background: var(--color-pill-bg);
  padding: 2px 6px;
  border-radius: 4px;
  white-space: pre-wrap;
  overflow-wrap: break-word;
}

.code-block {
  margin: var(--space-4) 0;
  border-radius: 12px;
  overflow: hidden;
}

.code-block__file {
  background: #1F1B18;
  color: var(--color-text-muted);
  font-family: "SF Mono", "Consolas", monospace;
  font-size: 13px;
  padding: var(--space-2) var(--space-4);
  margin: 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.code-block pre {
  background: #2B2622;
  margin: 0;
  padding: var(--space-4);
  overflow-x: auto;
}

.code-block code {
  background: none;
  padding: 0;
  white-space: pre;
  color: #F2EDE6;
  font-size: 13.5px;
  line-height: 1.7;
}

.glossary-block {
  margin: 0;
}

.glossary-block__term {
  font-family: var(--font-heading);
  font-weight: 500;
  color: var(--color-accent);
  margin: 0 0 4px;
}

.glossary-block__def {
  margin: 0;
}

/* Popover flotante: se muestra desde CUALQUIER aparición de un término
   en toda la web, no solo la primera. El contenido real vive siempre
   oculto (.glossary-block) y se copia aquí dinámicamente por JS. */
.term-popover {
  position: absolute;
  z-index: 90;
  width: min(320px, calc(100vw - var(--space-4) * 2));
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  padding: var(--space-4);
  box-shadow: 0 12px 28px rgba(43, 38, 34, 0.18);
}

.term-popover[hidden] {
  display: none;
}

.term-popover__close {
  position: absolute;
  top: var(--space-2);
  right: var(--space-2);
  border: none;
  background: none;
  cursor: pointer;
  color: var(--color-text-muted);
  font-size: 14px;
  line-height: 1;
  padding: 4px;
}

.term-popover__content {
  padding-right: var(--space-4);
}

/* ==========================================================================
   7. DEMOSTRACIÓN CON RESPALDO (GIF/captura + modal)
   ========================================================================== */
.demo-figure {
  margin: var(--space-4) 0;
}

.demo-figure__trigger {
  display: inline-flex;
  align-items: center;
  border: none;
  background: none;
  padding: 0;
  cursor: pointer;
}

.demo-figure__placeholder {
  display: inline-block;
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 15px;
  color: var(--color-accent);
  border-bottom: 1px dotted var(--color-accent);
  transition: color var(--transition-base), border-color var(--transition-base);
}

.demo-figure__trigger:hover .demo-figure__placeholder {
  color: var(--color-text);
  border-bottom-color: var(--color-text);
}

.demo-figure figcaption {
  font-size: 14px;
  color: var(--color-text-muted);
  margin-top: var(--space-2);
}

/* ==========================================================================
   8. MODAL
   ========================================================================== */
.modal[hidden] { display: none; }

.modal {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
}

.modal__backdrop {
  position: absolute;
  inset: 0;
  background: rgba(43, 38, 34, 0.6);
}

.modal__panel {
  position: relative;
  background: var(--color-bg);
  border-radius: 12px;
  padding: var(--space-5);
  max-width: 640px;
  width: calc(100% - var(--space-4) * 2);
}

.modal__close {
  position: absolute;
  top: var(--space-3);
  right: var(--space-3);
  border: none;
  background: none;
  font-size: 18px;
  cursor: pointer;
  color: var(--color-text-muted);
}

.modal__eyebrow {
  font-family: var(--font-heading);
  font-weight: 500;
  font-size: 18px;
  color: var(--color-accent);
  margin: 0 0 var(--space-3);
}

.modal__media {
  aspect-ratio: 16 / 9;
  background: var(--color-pill-bg);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-muted);
  margin-bottom: var(--space-4);
}

.modal__media--iframe {
  aspect-ratio: auto;
  height: min(70vh, 640px);
  padding: 0;
  overflow: hidden;
}

.modal__media--iframe iframe {
  width: 100%;
  height: 100%;
  border: 0;
  display: block;
}

#modal-demo-filtrado .modal__panel {
  max-width: 900px;
}

.modal__cta {
  display: inline-block;
  font-weight: 500;
  color: var(--color-bg-alt);
  background: var(--color-accent);
  text-decoration: none;
  border-radius: 4px;
  padding: 12px 24px;
}

/* Foco visible para accesibilidad de teclado */
a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}