/* ==========================================================================
   MUNDO SOCIAL - Portal Editorial & Repositorio Académico
   Inspirado en la paleta y tipografía de Derek Martell (UNMSM)

   Índice
   01. Tokens (claro / oscuro "Sala de lectura")
   02. Base
   03. Navegación (cabecera tipo mancheta)
   04. Hero / portadilla
   05. Índice de secciones (pestañas) y fichas de filtro
   06. Encabezados de sección y filetes
   07. Portada editorial (lead, secundarias, gaceta)
   08. Hub de Apuntes y Exámenes (fichero)
   09. Archivo: tarjeta estándar
   10. Estado vacío
   11. Modal de lectura, cita APA y visor PDF
   12. Nosotros y pie de página
   13. Responsive y movimiento reducido
   ========================================================================== */

/* 01. TOKENS ============================================================== */
:root {
  --bg: #f6f7f4;
  --panel: #ffffff;
  --panel-hover: #fafbfa;
  --ink: #1b2420;
  --ink-secondary: #3b4742;
  --mute: #5a6660;
  --line: #dde3de;
  --line-strong: #c2ccc4;

  /* Acentos cromáticos */
  --verde: #0f4c3a;
  --verde-oscuro: #092c22;
  --verde-vivo: #1a7a5a;
  --verde-suave: #e6f0eb;
  --verde-glow: rgba(15, 76, 58, 0.12);

  --laton: #c9a24a;
  --laton-oscuro: #8f6c1e;
  --laton-suave: #fdf7ea;

  --azul: #1d5f8a;
  --azul-suave: #e8f2f9;

  --rojo: #9e2a2b;
  --rojo-suave: #fbeeed;

  --sombra-sm: 0 1px 2px rgba(27, 36, 32, 0.04);
  --sombra: 0 4px 16px rgba(27, 36, 32, 0.06), 0 1px 2px rgba(27, 36, 32, 0.04);
  --sombra-lg: 0 14px 34px rgba(27, 36, 32, 0.14), 0 2px 6px rgba(27, 36, 32, 0.05);

  /* Radios editoriales: esquinas casi rectas */
  --radio: 3px;
  --radio-sm: 2px;
  --radio-pill: 9999px;

  /* Filetes y folios */
  --hairline: 1px solid var(--line);
  --hairline-strong: 2px solid var(--ink);
  --folio-font: 500 0.75rem/1 var(--display);
  --ficha-rule: rgba(158, 42, 43, 0.28);

  /* Textura de papel (ruido muy tenue) */
  --paper: url("data:image/svg+xml,%3Csvg xmlns='http:%2F%2Fwww.w3.org%2F2000%2Fsvg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/%3E%3CfeColorMatrix values='0 0 0 0 0.1 0 0 0 0 0.14 0 0 0 0 0.12 0 0 0 0.05 0'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");

  /* Curvas y tiempos de interacción (Emil Kowalski Design Engineering) */
  --ease-out: cubic-bezier(0.23, 1, 0.32, 1);
  --ease-spring: cubic-bezier(0.16, 1, 0.3, 1);
  --trans: 180ms var(--ease-out);
  --trans-fast: 120ms var(--ease-out);
  --trans-spring: 220ms var(--ease-spring);
  --max-w: 1200px;

  --display: "Schibsted Grotesk", system-ui, -apple-system, sans-serif;
  --serif: "Literata", Georgia, serif;
}

/* Sala de lectura: pizarra y carbón suave, verde bosque atenuado, latón cálido */
[data-theme="dark"] {
  --bg: #12181a;
  --panel: #1a2224;
  --panel-hover: #1f292b;
  --ink: #e6ece7;
  --ink-secondary: #c2ccc6;
  --mute: #93a39b;
  --line: #2a3437;
  --line-strong: #3a474a;

  --verde: #60c99a;
  --verde-oscuro: #143e30;
  --verde-vivo: #45b784;
  --verde-suave: #16302a;
  --verde-glow: rgba(96, 201, 154, 0.15);

  --laton: #e0b85a;
  --laton-oscuro: #e0b85a;
  --laton-suave: #2a2415;

  --azul: #68b0dc;
  --azul-suave: #132a38;

  --rojo: #e58b85;
  --rojo-suave: #331c1b;
  --ficha-rule: rgba(229, 139, 133, 0.25);

  --sombra-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
  --sombra: 0 6px 20px rgba(0, 0, 0, 0.4);
  --sombra-lg: 0 16px 40px rgba(0, 0, 0, 0.5);

  --paper: url("data:image/svg+xml,%3Csvg xmlns='http:%2F%2Fwww.w3.org%2F2000%2Fsvg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/%3E%3CfeColorMatrix values='0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0.035 0'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* 02. BASE ================================================================ */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

body {
  background-color: var(--bg);
  color: var(--ink);
  font-family: var(--display);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  transition: background-color var(--trans), color var(--trans);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: clip;
}

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

button {
  font-family: inherit;
  font-size: inherit;
  color: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

:focus-visible {
  outline: 2px solid var(--laton-oscuro);
  outline-offset: 2px;
}

/* Browser surfaces (Impeccable Craft Floor: selección, scrollbar y caret) */
::selection {
  background-color: var(--verde);
  color: #ffffff;
}

[data-theme="dark"] ::selection {
  background-color: var(--laton);
  color: var(--bg);
}

::-webkit-scrollbar {
  width: 7px;
  height: 7px;
}

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

::-webkit-scrollbar-thumb {
  background: var(--line-strong);
  border-radius: var(--radio-sm);
}

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

.wrap {
  width: 100%;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 1.5rem;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

/* 03. CABECERA & MANCHETA BROADSHEET (ESTILO THE NEW YORK TIMES + ECONÓMICA) === */
.site-header {
  background-color: var(--bg);
  background-image: var(--paper);
  border-bottom: 1px solid var(--ink);
  transition: background-color var(--trans), border-color var(--trans);
}

.site-header:has(+ .navbar) {
  border-bottom: none;
}

/* Franja superior de utilidades (Top Bar) */
.top-utility-bar {
  border-bottom: var(--hairline);
  background: rgba(0, 0, 0, 0.015);
  font-size: 0.72rem;
  letter-spacing: 0.05em;
  color: var(--mute);
}
[data-theme="dark"] .top-utility-bar {
  background: rgba(255, 255, 255, 0.015);
}

.top-utility-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 2.3rem;
  gap: 1rem;
}

.top-utility-left {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  white-space: nowrap;
  font-weight: 500;
}

.top-date {
  display: inline-block;
  color: var(--ink);
  font-weight: 600;
}
.top-date::first-letter {
  text-transform: uppercase;
}

.top-sep {
  color: var(--line-strong);
}

.top-edition, .top-inst {
  color: var(--mute);
  text-transform: uppercase;
  font-size: 0.68rem;
  letter-spacing: 0.06em;
}

.top-utility-right {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  margin-left: auto;
}

.top-social-links {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  color: var(--mute);
}

.top-social-links a {
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--mute);
  transition: color var(--trans);
}

.top-social-links a:hover {
  color: var(--verde);
}

/* Gran Mancheta Central (Masthead) */
.masthead-main {
  padding: 1.6rem 0 1.25rem;
  border-bottom: 3px double var(--ink);
  text-align: center;
}

.masthead-center-block {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.masthead-brand {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.6rem;
  text-decoration: none;
}

.masthead-logo-wrap {
  display: flex;
  align-items: center;
  justify-content: center;
}

.masthead-logo-img {
  height: clamp(4.2rem, 7.5vw, 5.8rem);
  width: auto;
  max-width: 320px;
  object-fit: contain;
}

/* Visibilidad de logotipos según el tema claro / oscuro */
[data-theme="light"] .logo-dark,
:root:not([data-theme="dark"]) .logo-dark {
  display: none !important;
}

[data-theme="light"] .logo-light,
:root:not([data-theme="dark"]) .logo-light {
  display: block !important;
}

[data-theme="dark"] .logo-light {
  display: none !important;
}

[data-theme="dark"] .logo-dark {
  display: block !important;
}

.masthead-titles {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.3rem;
  margin-top: 0.5rem;
}

.masthead-tagline {
  font-family: var(--serif);
  font-style: italic;
  font-size: 1.04rem;
  color: var(--ink-secondary);
  max-width: 68ch;
  line-height: 1.4;
}

.masthead-motto {
  font-family: var(--serif);
  font-size: 0.9rem;
  color: var(--mute);
  max-width: 68ch;
  line-height: 1.4;
}

.masthead-sub-tagline {
  font-family: var(--display);
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--mute);
  margin-top: 0.15rem;
}

/* Cinta de Navegación Pegajosa (Sticky Section Ribbon) */
.navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: var(--bg);
  background-image: var(--paper);
  border-bottom: 1px solid var(--ink);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 2.85rem;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 0.28rem;
  width: 2rem;
  height: 2rem;
  padding: 0;
  background: none;
  border: none;
  cursor: pointer;
  flex-shrink: 0;
}

.nav-toggle span {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--ink);
  transition: transform var(--trans), opacity var(--trans);
}

.nav-toggle[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(6px) rotate(45deg);
}
.nav-toggle[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}
.nav-toggle[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-6px) rotate(-45deg);
}

.nav-menu {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1.8rem;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: none;
  width: 100%;
}
.nav-menu::-webkit-scrollbar {
  display: none;
}

.nav-link {
  font-size: 0.74rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--ink-secondary);
  position: relative;
  padding: 0.6rem 0.2rem;
  white-space: nowrap;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  transition: color var(--trans);
}

.nav-link:hover, .nav-link.active {
  color: var(--verde);
}

.nav-link.active::after {
  content: "";
  position: absolute;
  bottom: -1px;
  left: 0;
  width: 100%;
  height: 2.5px;
  background: var(--verde);
}

.nav-badge-pill {
  font-size: 0.72rem;
  font-variant-numeric: tabular-nums;
  background: var(--verde-suave);
  color: var(--verde);
  padding: 0.1rem 0.38rem;
  border-radius: var(--radio-pill);
  font-weight: 700;
  line-height: 1;
}

[data-theme="dark"] .nav-badge-pill {
  background: rgba(96, 201, 154, 0.15);
  color: var(--verde);
}

/* Botones de acción y temas */
.theme-toggle {
  width: 2rem;
  height: 2rem;
  border-radius: var(--radio-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--line);
  color: var(--ink);
  transition: transform 140ms var(--ease-out), color var(--trans), border-color var(--trans), background var(--trans);
}

.theme-toggle:hover {
  color: var(--verde);
  border-color: var(--verde);
  background: var(--panel);
}

.theme-toggle:active {
  transform: scale(0.95);
}

.theme-toggle svg {
  width: 1rem;
  height: 1rem;
}

[data-theme="light"] .icon-sun,
[data-theme="dark"] .icon-moon {
  display: none;
}

.footer-brand-col {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.footer-logo-wrap {
  display: flex;
  align-items: center;
  margin-bottom: 0.2rem;
}

.footer-logo-img {
  height: 2.3rem;
  width: auto;
  object-fit: contain;
}

/* 04. HERO / PORTADILLA EDITORIAL ========================================= */
/* Bloque verde bosque a todo el ancho, composición centrada como la mancheta */
.hero {
  --hero-bg: #0f4c3a;
  --hero-ink: #fbf9f4;
  --hero-mute: rgba(251, 249, 244, 0.8);
  --hero-line: rgba(251, 249, 244, 0.18);
  --hero-accent: #e0b85a;

  position: relative;
  overflow: hidden;
  isolation: isolate;
  background-color: var(--hero-bg);
  background-image: var(--paper);
  color: var(--hero-ink);
  text-align: center;
  margin-bottom: 1.5rem;
}

[data-theme="dark"] .hero {
  --hero-bg: #0d2a22;
}

.hero :focus-visible {
  outline-color: var(--hero-accent);
}

/* Cinta "Lo último": titulares recientes en movimiento, pausables */
.hero-ticker {
  position: relative;
  z-index: 1;
  background: rgba(0, 0, 0, 0.14);
  border-bottom: 1px solid var(--hero-line);
  text-align: left;
}

.hero-ticker-inner {
  display: flex;
  align-items: center;
  gap: 0.9rem;
  min-height: 2.6rem;
}

.ticker-label {
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font: 700 0.75rem/1 var(--display);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--hero-accent);
}

/* Punto de sección */
.ticker-label::before {
  content: "";
  width: 0.45rem;
  height: 0.45rem;
  border-radius: 50%;
  background: var(--hero-accent);
}

.ticker-viewport {
  flex: 1 1 auto;
  min-width: 0;
  overflow: hidden;
  -webkit-mask-image: linear-gradient(to right, transparent, #000 1.5rem, #000 calc(100% - 3rem), transparent);
  mask-image: linear-gradient(to right, transparent, #000 1.5rem, #000 calc(100% - 3rem), transparent);
}

.ticker-track {
  display: flex;
  width: max-content;
  list-style: none;
  animation: tickerScroll var(--ticker-dur, 60s) linear infinite;
}

.hero-ticker.is-paused .ticker-track,
.ticker-viewport:hover .ticker-track,
.ticker-viewport:focus-within .ticker-track {
  animation-play-state: paused;
}

@keyframes tickerScroll {
  to { transform: translateX(-50%); }
}

.ticker-item {
  display: flex;
  align-items: center;
}

.ticker-item::after {
  content: "";
  width: 4px;
  height: 4px;
  margin: 0 1.1rem;
  border-radius: 50%;
  background: var(--hero-line);
}

.ticker-link {
  display: inline-flex;
  align-items: baseline;
  gap: 0.55rem;
  padding: 0.75rem 0;
  line-height: 1.2;
  font-family: var(--serif);
  font-size: 0.9rem;
  color: var(--hero-ink);
  white-space: nowrap;
  text-decoration: underline;
  text-decoration-color: transparent;
  text-underline-offset: 0.2em;
  transition: text-decoration-color var(--trans), color var(--trans);
}

.ticker-link:hover {
  text-decoration-color: var(--hero-accent);
}

.ticker-date {
  font: 600 0.75rem/1 var(--display);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--hero-accent);
}

.ticker-toggle {
  flex-shrink: 0;
  display: grid;
  place-items: center;
  width: 2rem;
  height: 2rem;
  border-radius: 50%;
  color: var(--hero-mute);
  border: 1px solid var(--hero-line);
  transition: color var(--trans), border-color var(--trans), transform 140ms var(--ease-out);
}

.ticker-toggle:hover {
  color: var(--hero-ink);
  border-color: var(--hero-ink);
}

.ticker-toggle:active {
  transform: scale(0.94);
}

.ticker-toggle svg {
  width: 0.75rem;
  height: 0.75rem;
}

.ticker-toggle .icon-play,
.ticker-toggle[aria-pressed="true"] .icon-pause {
  display: none;
}

.ticker-toggle[aria-pressed="true"] .icon-play {
  display: block;
}

/* La sonrisa del isotipo se dibuja detrás del titular al llegar */
.hero-smile {
  position: absolute;
  z-index: -1;
  left: 50%;
  bottom: 4.5rem;
  width: min(1100px, 135%);
  transform: translateX(-50%);
  fill: none;
  stroke: var(--hero-accent);
  stroke-width: 26;
  stroke-linecap: round;
  opacity: 0.14;
  pointer-events: none;
}

.hero-smile path {
  stroke-dasharray: 1;
  stroke-dashoffset: 1;
  animation: smileDraw 1400ms var(--ease-out) 250ms forwards;
}

@keyframes smileDraw {
  to { stroke-dashoffset: 0; }
}

.hero-inner {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding-top: 3.5rem;
}

.hero-editorial-lead {
  max-width: 54rem;
  margin: 0 auto 2.25rem;
}

.hero-title {
  font-family: var(--serif);
  font-size: clamp(2.1rem, 4.6vw, 3.6rem);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.025em;
  color: var(--hero-ink);
  max-width: 20ch;
  margin: 0 auto 1.1rem;
  text-wrap: balance;
}

.hero-title em {
  font-style: italic;
  font-weight: 400;
  color: var(--hero-accent);
}

.hero-desc {
  font-family: var(--serif);
  font-size: 1.15rem;
  color: var(--hero-mute);
  max-width: 56ch;
  margin: 0 auto;
  line-height: 1.6;
  text-wrap: pretty;
}

/* Entrada de la portadilla: titular, bajada y buscador en cascada (una vez) */
.hero-title,
.hero-desc,
.search-box-wrap {
  animation: heroIn 650ms var(--ease-out) backwards;
}

.hero-desc {
  animation-delay: 90ms;
}

.search-box-wrap {
  animation-delay: 180ms;
}

@keyframes heroIn {
  from { opacity: 0; transform: translateY(12px); }
}

/* Buscador */
.search-box-wrap {
  width: 100%;
  max-width: 720px;
  margin: 0 auto 2.75rem;
  text-align: left;
}

.search-label {
  display: block;
  font: var(--folio-font);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--hero-mute);
  text-align: center;
  margin-bottom: 0.6rem;
}

.search-box {
  display: flex;
  align-items: center;
  background: var(--panel);
  border: 1px solid transparent;
  border-bottom: 2px solid var(--hero-accent);
  border-radius: var(--radio-sm);
  padding: 0.85rem 1.1rem;
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.2), 0 2px 6px rgba(0, 0, 0, 0.1);
  transition: border-color var(--trans), box-shadow var(--trans), transform var(--trans);
}

.search-box:focus-within {
  border-color: var(--hero-accent);
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.26), 0 2px 6px rgba(0, 0, 0, 0.1);
}

.search-box svg {
  width: 1.15rem;
  height: 1.15rem;
  color: var(--mute);
  margin-right: 0.75rem;
  flex-shrink: 0;
  stroke-width: 1.75;
  transition: color var(--trans);
}

.search-box:focus-within svg {
  color: var(--verde);
}

/* Indicador vivo de coincidencias dentro del buscador */
.search-matches {
  flex-shrink: 0;
  font: var(--folio-font);
  font-variant-numeric: tabular-nums;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--laton-oscuro);
  white-space: nowrap;
  padding-left: 0.75rem;
  margin-left: 0.5rem;
  border-left: var(--hairline);
}

.search-matches:empty {
  display: none;
}

.search-input {
  width: 100%;
  border: none;
  outline: none;
  background: transparent;
  font-size: 1.02rem;
  font-family: inherit;
  color: var(--ink);
  caret-color: var(--verde);
}

.search-input::placeholder {
  color: var(--mute);
}

.search-input::-webkit-search-cancel-button {
  display: none;
}

.search-clear {
  color: var(--mute);
  min-width: 2rem;
  min-height: 2rem;
  font-size: 0.85rem;
  border-radius: var(--radio-sm);
  display: none;
  transition: transform 140ms var(--ease-out), color var(--trans);
}

.search-clear:hover {
  color: var(--ink);
}

.search-clear:active {
  transform: scale(0.92);
}

/* Métricas del acervo: tira centrada con filetes claros */
.hero-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  width: 100%;
  max-width: 900px;
  margin: 0 auto;
  border-top: 1px solid var(--hero-line);
}

.stat-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.25rem;
  padding: 1.15rem 0.5rem 1.5rem;
}

.stat-item + .stat-item {
  border-left: 1px solid var(--hero-line);
}

.stat-num {
  font-family: var(--serif);
  font-size: 2rem;
  font-weight: 600;
  color: var(--hero-ink);
  line-height: 1.1;
  font-variant-numeric: oldstyle-nums;
}

.stat-label {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--hero-mute);
}

/* 05. ÍNDICE DE SECCIONES Y FICHAS DE FILTRO ============================== */
.controls-bar {
  padding: 2rem 0 0.5rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.category-tabs {
  display: flex;
  overflow-x: auto;
  border-bottom: 1px solid var(--ink);
  scrollbar-width: none;
}
.category-tabs::-webkit-scrollbar {
  display: none;
}

.cat-tab {
  padding: 0.8rem 1.1rem 0.7rem;
  font-size: 0.76rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--mute);
  white-space: nowrap;
  display: flex;
  align-items: baseline;
  gap: 0.5rem;
  border-right: var(--hairline);
  border-bottom: 3px solid transparent;
  margin-bottom: -1px;
  transition: transform 140ms var(--ease-out), color var(--trans), border-color var(--trans), background-color var(--trans);
}

.cat-tab:active {
  transform: scale(0.97);
}

.cat-tab:first-child {
  padding-left: 0.25rem;
}

.cat-tab:last-child {
  border-right: none;
}

.cat-tab:hover {
  color: var(--ink);
  background: var(--panel-hover);
}

.cat-tab.active {
  color: var(--ink);
  border-bottom-color: var(--verde);
}

.cat-badge-count {
  font: var(--folio-font);
  font-variant-numeric: tabular-nums;
  color: var(--laton-oscuro);
}

.cat-tab-short {
  display: none;
}

.tag-chips {
  display: flex;
  gap: 0.4rem;
  flex-wrap: wrap;
}

.tag-chip {
  padding: 0.35rem 0.7rem;
  min-height: 2rem;
  border-radius: var(--radio-sm);
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--ink-secondary);
  background: var(--panel);
  border: 1px solid var(--line);
  transition: transform 140ms var(--ease-out), border-color var(--trans), background-color var(--trans), color var(--trans);
}

.tag-chip:active {
  transform: scale(0.96);
}

.tag-chip:hover {
  border-color: var(--laton);
  background: var(--laton-suave);
  color: var(--ink);
}

.tag-chip.active {
  border-color: var(--laton-oscuro);
  background: var(--laton-suave);
  color: var(--laton-oscuro);
  font-weight: 600;
}

.results-header {
  padding: 0.75rem 0 1.5rem;
  font-size: 0.82rem;
  color: var(--mute);
}

.results-count strong {
  color: var(--ink);
  font-variant-numeric: tabular-nums;
}

.results-count.is-updating {
  animation: countIn 0.15s ease-out;
}

@keyframes countIn {
  from { opacity: 0.35; }
  to { opacity: 1; }
}

/* 06. ENCABEZADOS DE SECCIÓN Y FILETES ==================================== */
.section-heading {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 0.25rem 0.75rem;
  border-top: var(--hairline-strong);
  padding-top: 0.6rem;
  margin-bottom: 1.25rem;
  font-family: var(--display);
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--ink);
}

.section-heading-sub {
  font-family: var(--serif);
  font-size: 0.9rem;
  font-style: italic;
  font-weight: 400;
  text-transform: none;
  letter-spacing: 0;
  color: var(--mute);
}

.kicker {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 0.75rem;
  font-size: 0.75rem;
  color: var(--mute);
  margin-bottom: 0.6rem;
}

.byline {
  font-size: 0.85rem;
  color: var(--ink-secondary);
  margin-bottom: 0.5rem;
}

.byline strong {
  color: var(--ink);
}

.card-meta-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  font: var(--folio-font);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--mute);
  margin-bottom: 0.9rem;
}

.card-meta-strip span + span::before {
  content: "·";
  margin-right: 0.35rem;
  color: var(--laton);
}

.card-meta-strip span:first-child {
  color: var(--laton-oscuro);
}

/* Titulares enlazados: subrayado editorial en hover */
.lead-title, .secondary-title, .brief-title, .dossier-title, .card-title {
  text-wrap: balance;
  text-decoration: underline;
  text-decoration-color: transparent;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.18em;
  transition: text-decoration-color var(--trans), color var(--trans);
}

[data-open-id] {
  cursor: pointer;
}

[data-open-id]:hover .lead-title,
[data-open-id]:hover .secondary-title,
[data-open-id]:hover .brief-title,
[data-open-id]:hover .dossier-title,
[data-open-id]:hover .card-title {
  text-decoration-color: currentColor;
}

/* 07. PORTADA EDITORIAL =================================================== */
.editorial-layout {
  display: grid;
  grid-template-columns: minmax(0, 2fr) minmax(0, 1fr);
  grid-template-areas:
    "lead gaceta"
    "secondary gaceta";
  column-gap: 2.5rem;
  row-gap: 2.5rem;
  margin-bottom: 3.5rem;
}

.lead-story { grid-area: lead; }
.gaceta { grid-area: gaceta; }
.secondary-block { grid-area: secondary; }

/* Historia principal */
.card--lead {
  display: block;
  padding: 2rem 2.25rem 1.75rem;
  background-color: var(--panel);
  background-image: var(--paper);
  border: var(--hairline);
  border-top: 4px solid var(--verde);
  border-radius: 0;
  transition: border-color var(--trans), box-shadow var(--trans), transform var(--trans);
}

.card--lead:hover {
  border-color: var(--line-strong);
  border-top-color: var(--verde);
  box-shadow: var(--sombra);
}

.lead-title {
  font-family: var(--serif);
  font-size: clamp(1.75rem, 3.2vw, 2.75rem);
  font-weight: 700;
  line-height: 1.12;
  letter-spacing: -0.02em;
  color: var(--ink);
  margin-bottom: 1rem;
  text-wrap: balance;
}

.lead-dek {
  font-family: var(--serif);
  font-size: 1.12rem;
  line-height: 1.6;
  color: var(--ink-secondary);
  max-width: 62ch;
  margin-bottom: 1.25rem;
}

.lead-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.75rem;
  padding-top: 1rem;
  border-top: var(--hairline);
}

/* Bloque secundario a dos columnas */
.secondary-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 2rem;
}

.card--secondary {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 1rem;
  padding-top: 1rem;
  border-top: var(--hairline);
}

.secondary-folio {
  font-family: var(--serif);
  font-size: 2rem;
  font-weight: 400;
  line-height: 1;
  color: var(--laton);
  font-variant-numeric: oldstyle-nums;
}

.secondary-title {
  font-family: var(--serif);
  font-size: 1.25rem;
  font-weight: 600;
  line-height: 1.3;
  color: var(--ink);
  margin-bottom: 0.6rem;
}

.secondary-dek {
  font-family: var(--serif);
  font-size: 0.95rem;
  line-height: 1.55;
  color: var(--ink-secondary);
  margin-bottom: 0.75rem;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* Gaceta / breves de coyuntura */
.gaceta {
  padding-left: 2.5rem;
  border-left: var(--hairline);
}

.gaceta-list {
  list-style: none;
}

.card--brief {
  display: grid;
  grid-template-columns: 2.5rem minmax(0, 1fr);
  gap: 0.5rem;
  padding: 0.85rem 0;
  border-bottom: var(--hairline);
}

.card--brief:first-child {
  padding-top: 0;
}

.brief-folio {
  font: var(--folio-font);
  font-variant-numeric: tabular-nums;
  color: var(--laton-oscuro);
  padding-top: 0.3rem;
}

.brief-title {
  font-family: var(--serif);
  font-size: 1rem;
  font-weight: 600;
  line-height: 1.35;
  color: var(--ink);
  margin-bottom: 0.25rem;
}

.brief-meta {
  font-size: 0.75rem;
  color: var(--mute);
}

.gaceta-more {
  margin-top: 1rem;
  min-height: 2.25rem;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--verde);
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  transition: transform 140ms var(--ease-out), color var(--trans);
}

.gaceta-more:hover {
  text-decoration: underline;
  text-underline-offset: 0.2em;
}

.gaceta-more:active {
  transform: scale(0.97);
}

/* 08. HUB DE APUNTES Y EXÁMENES =========================================== */
.hub-apuntes {
  margin-bottom: 3.5rem;
}

.hub-header {
  margin-bottom: 1.5rem;
}

.hub-header .section-heading {
  margin-bottom: 0.4rem;
}

.hub-desc {
  font-family: var(--serif);
  font-size: 0.98rem;
  color: var(--mute);
  max-width: 62ch;
}

.hub-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 250px), 1fr));
  gap: 1rem;
}

/* Ficha bibliográfica con esquina cortada */
.dossier-card {
  position: relative;
  display: flex;
  flex-direction: column;
  padding: 1rem 1.15rem;
  background-color: var(--panel);
  background-image:
    linear-gradient(to bottom, transparent 2.35rem, var(--ficha-rule) 2.35rem, var(--ficha-rule) calc(2.35rem + 1px), transparent calc(2.35rem + 1px)),
    var(--paper);
  border: 1px solid var(--line-strong);
  border-radius: var(--radio-sm);
  clip-path: polygon(0 0, calc(100% - 14px) 0, 100% 14px, 100% 100%, 0 100%);
  transition: border-color var(--trans), transform var(--trans), box-shadow var(--trans);
}

.dossier-card::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 14px;
  height: 14px;
  background: linear-gradient(to bottom left, var(--bg) 50%, var(--line-strong) 50%);
}

.dossier-card:hover {
  border-color: var(--laton);
  transform: translateY(-2px);
  box-shadow: var(--sombra);
}

/* El clip-path recorta el contorno exterior: foco hacia dentro */
.dossier-card:focus-visible {
  outline-offset: -3px;
}

.dossier-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  min-height: 1.5rem;
  margin-bottom: 0.9rem;
  padding-right: 0.75rem;
}

.dossier-folio {
  font: var(--folio-font);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--laton-oscuro);
}

.dossier-seal {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--verde);
  border: 1px solid var(--verde);
  border-radius: var(--radio-sm);
  padding: 0.15rem 0.4rem;
}

.dossier-course {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--verde);
  margin-bottom: 0.35rem;
}

.dossier-title {
  font-family: var(--serif);
  font-size: 1.02rem;
  font-weight: 600;
  line-height: 1.35;
  color: var(--ink);
  margin-bottom: 0.5rem;
}

.dossier-authors {
  font-size: 0.8rem;
  color: var(--ink-secondary);
  margin-bottom: 0.9rem;
}

.dossier-foot {
  margin-top: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  padding-top: 0.7rem;
  border-top: 1px dashed var(--line-strong);
  font: var(--folio-font);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--mute);
}

/* 09. ARCHIVO: TARJETA ESTÁNDAR =========================================== */
.archive-heading {
  margin-top: 0.5rem;
}

.articles-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 320px), 1fr));
  gap: 1.25rem;
  margin-bottom: 4rem;
}

.card {
  background-color: var(--panel);
  background-image: var(--paper);
  border: var(--hairline);
  border-radius: var(--radio-sm);
  padding: 1.35rem 1.4rem 1.1rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: border-color var(--trans), background-color var(--trans), box-shadow var(--trans), transform var(--trans);
  position: relative;
  border-top: 2px solid var(--line-strong);
}

.card:hover {
  border-color: var(--line-strong);
  background-color: var(--panel-hover);
  transform: translateY(-2px);
  box-shadow: var(--sombra);
}

/* Género editorial: filete superior y folio de ficha según el tipo */
.card--kind-coyuntura { border-top-color: var(--verde); }
.card--kind-investigacion { border-top: 3px double var(--azul); }
.card--kind-analisis { border-top-color: var(--rojo); }
.card--kind-apunte {
  border-top: 2px solid var(--laton);
}
.card--kind-apunte .card-title {
  font-family: var(--display);
  font-size: 1.05rem;
  letter-spacing: -0.005em;
}
.card--kind-investigacion .card-title {
  font-size: 1.24rem;
}

/* PDF disponible: sello discreto en la esquina */
.card.has-pdf .card-top::after {
  content: "PDF";
  font: var(--folio-font);
  letter-spacing: 0.08em;
  color: var(--verde);
  border: 1px solid var(--line-strong);
  padding: 0.15rem 0.35rem;
  border-radius: var(--radio-sm);
}

.card.has-pdf .card-top {
  justify-content: flex-start;
}

.card.has-pdf .card-top > .card-badge {
  margin-right: auto;
}

.card-top {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.75rem;
  margin-bottom: 0.75rem;
  padding-bottom: 0.6rem;
  border-bottom: var(--hairline);
}

/* Etiqueta de tipo: antetítulo tipográfico, no píldora */
.card-badge {
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.badge-nota { color: var(--verde); }
.badge-apunte { color: var(--laton-oscuro); }
.badge-investigacion { color: var(--azul); }
.badge-columna, .badge-articulo { color: var(--rojo); }

.card-date {
  font-size: 0.75rem;
  color: var(--mute);
  font-variant-numeric: tabular-nums;
}

.card-title {
  font-family: var(--serif);
  font-size: 1.18rem;
  font-weight: 600;
  line-height: 1.35;
  color: var(--ink);
  margin-bottom: 0.6rem;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.card-authors {
  font-size: 0.82rem;
  color: var(--ink-secondary);
  margin-bottom: 0.5rem;
}

.card-authors strong {
  font-weight: 600;
  color: var(--ink);
}

.card-tags {
  display: flex;
  gap: 0.35rem;
  flex-wrap: wrap;
  margin-bottom: 1rem;
}

.mini-tag {
  font-size: 0.75rem;
  color: var(--mute);
  padding: 0.1rem 0.45rem;
  border: var(--hairline);
  border-radius: var(--radio-sm);
}

.card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 0.85rem;
  border-top: var(--hairline);
  margin-top: auto;
}

.btn-read {
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--verde);
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  transition: transform 140ms var(--ease-out), gap var(--trans), color var(--trans);
}

.btn-read:active {
  transform: scale(0.96);
}

[data-open-id]:hover .btn-read {
  gap: 0.55rem;
}

.btn-pdf {
  font-size: 0.74rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--verde);
  border: 1px solid var(--line-strong);
  padding: 0.35rem 0.65rem;
  min-height: 2rem;
  border-radius: var(--radio-sm);
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  transition: transform 140ms var(--ease-out), background-color var(--trans), color var(--trans), border-color var(--trans);
}

.btn-pdf:hover {
  background: var(--verde);
  border-color: var(--verde);
  color: var(--bg);
}

.btn-pdf:active {
  transform: scale(0.96);
}

.btn-pdf svg {
  width: 0.9rem;
  height: 0.9rem;
}

.card-actions {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}

/* Micro-botón de cita APA: tipográfico, sin relleno */
.btn-cite-mini {
  font: var(--folio-font);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--mute);
  min-height: 2rem;
  padding: 0 0.55rem;
  border: 1px dashed var(--line-strong);
  border-radius: var(--radio-sm);
  transition: transform 140ms var(--ease-out), color var(--trans), border-color var(--trans), background-color var(--trans);
}

.btn-cite-mini:hover {
  color: var(--laton-oscuro);
  border-color: var(--laton);
  border-style: solid;
}

.btn-cite-mini:active {
  transform: scale(0.94);
}

.btn-cite-mini {
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.btn-cite-mini.is-swapping {
  color: transparent;
  filter: blur(2px);
  transition: color 75ms var(--ease-out), filter 75ms var(--ease-out);
}

.btn-cite-mini svg {
  width: 0.95rem;
  height: 0.95rem;
}

.btn-cite-mini.is-done {
  color: var(--verde);
  border-color: var(--verde);
  border-style: solid;
}

/* Entrada escalonada al cambiar de sección (solo las primeras 8 fichas).
   Relleno "backwards": no bloquea el transform del hover al terminar. */
.card.is-entering {
  animation: fichaIn 220ms var(--ease-out) backwards;
  animation-delay: calc(var(--i, 0) * 30ms);
}

@keyframes fichaIn {
  from { opacity: 0; transform: translateY(6px); }
}

/* Llegada de la portada: el único momento de entrada de la página */
.editorial-layout.is-arriving .card--lead {
  animation: portadaIn 400ms var(--ease-out) backwards;
}

.editorial-layout.is-arriving .card--brief {
  animation: portadaIn 300ms var(--ease-out) backwards;
  animation-delay: calc(120ms + var(--i, 0) * 40ms);
}

@keyframes portadaIn {
  from { opacity: 0; transform: translateY(8px); }
}

/* 10. ESTADO VACÍO ======================================================== */
.empty-state {
  text-align: center;
  padding: 4rem 1rem;
  margin-bottom: 4rem;
  border-top: var(--hairline);
  border-bottom: var(--hairline);
  display: none;
}

.empty-state-icon {
  width: 3rem;
  height: 3rem;
  color: var(--mute);
  margin-bottom: 1rem;
}

.empty-state-title {
  font-family: var(--serif);
  font-size: 1.3rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.empty-state-desc {
  color: var(--mute);
  font-size: 0.95rem;
}

/* 11. MODAL (Emil Kowalski Interruptible Entrance & Backdrop Blur) ========== */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(12, 17, 16, 0.72);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  backdrop-filter: blur(3px);
  -webkit-backdrop-filter: blur(3px);
  transition: opacity 180ms var(--ease-out), visibility 180ms var(--ease-out);
}

.modal-overlay.active {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}

.modal-card {
  background-color: var(--panel);
  background-image: var(--paper);
  border: 1px solid var(--line-strong);
  border-top: 4px solid var(--verde);
  border-radius: 0;
  max-width: 760px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: var(--sombra);
  padding: 0;
  position: relative;
  transform: scale(0.96);
  opacity: 0;
  transform-origin: center;
  transition: transform 220ms var(--ease-spring), opacity 180ms var(--ease-out);
}

.modal-overlay.active .modal-card {
  transform: scale(1);
  opacity: 1;
}

/* Atril de lectura: barra superior fija con acciones */
.modal-toolbar {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin: 0;
  padding: 0.85rem 2rem;
  background: var(--verde);
  border-bottom: var(--hairline);
}

.modal-body {
  padding: 1.75rem 2rem 2.25rem;
}

.modal-toolbar-label {
  font: var(--folio-font);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--panel);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  flex: 1 1 auto;
  min-width: 0;
}

.modal-toolbar-actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-shrink: 0;
}

.modal-tool-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  min-height: 2.25rem;
  padding: 0 0.8rem;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--panel);
  border: 1px solid rgba(255, 255, 255, 0.4);
  border-radius: var(--radio-sm);
  transition: transform 140ms var(--ease-out), color var(--trans), border-color var(--trans), background-color var(--trans);
}

.modal-tool-btn:hover {
  color: var(--panel);
  border-color: var(--panel);
  background-color: rgba(255, 255, 255, 0.12);
}

.modal-tool-btn:active {
  transform: scale(0.96);
}

.modal-close {
  width: 2.25rem;
  height: 2.25rem;
  border-radius: var(--radio-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--panel);
  border: 1px solid rgba(255, 255, 255, 0.4);
  transition: transform 140ms var(--ease-out), color var(--trans), border-color var(--trans), background-color var(--trans);
}

.modal-close:hover {
  color: var(--panel);
  border-color: var(--panel);
  background-color: rgba(255, 255, 255, 0.12);
}

.modal-close:active {
  transform: scale(0.95);
}

.modal-meta {
  display: flex;
  align-items: baseline;
  gap: 0.8rem;
  margin-bottom: 0.75rem;
}

.modal-title {
  font-family: var(--serif);
  font-size: clamp(1.3rem, 2.6vw, 1.9rem);
  font-weight: 700;
  line-height: 1.32;
  letter-spacing: -0.01em;
  margin-bottom: 1rem;
  overflow-wrap: break-word;
  word-break: break-word;
  hyphens: auto;
  text-wrap: balance;
}

.modal-authors-box {
  border-top: var(--hairline);
  border-bottom: var(--hairline);
  padding: 0.6rem 0;
  margin-bottom: 1.25rem;
  font-size: 0.88rem;
  color: var(--ink-secondary);
}

.modal-authors-box strong {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--mute);
  margin-right: 0.25rem;
}

/* Autores de la ficha: cada nombre filtra el archivo por ese autor */
.author-link {
  display: inline;
  padding: 0;
  font: inherit;
  color: var(--ink);
  text-decoration: underline;
  text-decoration-color: var(--line-strong);
  text-underline-offset: 0.2em;
  transition: text-decoration-color var(--trans), color var(--trans);
}

.author-link:hover {
  color: var(--verde);
  text-decoration-color: currentColor;
}

.modal-resumen {
  font-family: var(--serif);
  font-size: 1.08rem;
  line-height: 1.7;
  color: var(--ink-secondary);
  max-width: 68ch;
  margin-bottom: 1.75rem;
}

.modal-actions {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  margin-bottom: 1.5rem;
}

.modal-actions-secondary {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.btn-primary-action,
.btn-secondary-action {
  min-height: 2.75rem;
  padding: 0 1.2rem;
  border-radius: var(--radio-sm);
  font-size: 0.88rem;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  transition: transform 140ms var(--ease-out), background-color var(--trans), border-color var(--trans), color var(--trans), box-shadow var(--trans);
}

.btn-primary-action:active,
.btn-secondary-action:active {
  transform: scale(0.98);
}

.btn-primary-action {
  background: var(--verde);
  color: var(--bg);
  border: 1px solid var(--verde);
  width: 100%;
}

.btn-primary-action:hover {
  background: var(--verde-vivo);
  border-color: var(--verde-vivo);
}

.btn-secondary-action {
  color: var(--ink);
  border: 1px solid var(--line-strong);
  flex: 1 1 auto;
  white-space: nowrap;
}

.btn-secondary-action:hover {
  border-color: var(--verde);
  color: var(--verde);
}

.btn-secondary-action[aria-expanded="true"] {
  color: var(--verde);
  border-color: var(--verde);
}

/* Cita APA */
.modal-cite {
  border: 1px solid var(--laton);
  background: var(--laton-suave);
  padding: 0.85rem 1rem;
  margin-bottom: 1rem;
}

.modal-cite,
.modal-pdf-viewer {
  transition: opacity 200ms var(--ease-out), transform 200ms var(--ease-out);
}

@starting-style {
  .modal-cite:not([hidden]),
  .modal-pdf-viewer:not([hidden]) {
    opacity: 0;
    transform: translateY(-4px);
  }
}

.modal-cite-label {
  display: block;
  font: var(--folio-font);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--laton-oscuro);
  margin-bottom: 0.4rem;
}

.modal-cite-text {
  font-family: var(--serif);
  font-size: 0.9rem;
  line-height: 1.55;
  color: var(--ink);
  overflow-wrap: anywhere;
  user-select: all;
}

.modal-cite-status {
  display: block;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--verde);
  margin-top: 0.4rem;
}

.modal-cite-status:empty {
  display: none;
}

/* Visor PDF */
.modal-pdf-viewer iframe {
  display: block;
  width: 100%;
  height: min(70vh, 640px);
  border: 1px solid var(--line-strong);
  background: var(--bg);
}

.modal-pdf-note {
  font-size: 0.8rem;
  color: var(--mute);
  margin-top: 0.5rem;
}

.modal-pdf-note a {
  color: var(--verde);
  text-decoration: underline;
  text-underline-offset: 0.15em;
}

/* 12. NOSOTROS Y PIE ====================================================== */
.about-section {
  padding: 4.5rem 0;
  border-top: var(--hairline-strong);
  background-color: var(--panel);
  background-image: var(--paper);
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3.5rem;
  align-items: start;
}

.about-kicker {
  font: var(--folio-font);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--laton-oscuro);
  margin-bottom: 0.6rem;
}

.about-lede::first-letter {
  float: left;
  font-family: var(--serif);
  font-size: 3.4rem;
  line-height: 0.9;
  font-weight: 700;
  color: var(--verde);
  padding: 0.3rem 0.5rem 0 0;
}

.about-signature {
  font-family: var(--serif);
  font-style: italic;
  font-size: 0.95rem;
  color: var(--ink-secondary);
  padding-top: 0.75rem;
  border-top: var(--hairline);
  max-width: 62ch;
}

.about-title {
  font-family: var(--serif);
  font-size: 2.2rem;
  line-height: 1.2;
  margin-bottom: 1.2rem;
}

.about-p {
  font-family: var(--serif);
  font-size: 1.05rem;
  color: var(--ink-secondary);
  margin-bottom: 1.2rem;
  line-height: 1.7;
  max-width: 62ch;
}

.about-pillars {
  display: grid;
  grid-template-columns: 1fr 1fr;
  column-gap: 1.75rem;
  row-gap: 1.5rem;
}

.pillar-card {
  padding-top: 0.75rem;
  border-top: 2px solid var(--verde);
}

.pillar-title {
  font-family: var(--serif);
  font-weight: 600;
  font-size: 1.05rem;
  color: var(--ink);
  margin-bottom: 0.35rem;
}

.pillar-desc {
  font-size: 0.86rem;
  color: var(--mute);
}

.site-footer {
  margin-top: auto;
  border-top: 3px double var(--line-strong);
  background: var(--bg);
  padding: 2.5rem 0 2rem;
  font-size: 0.88rem;
  color: var(--mute);
}

.footer-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1.5rem;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.5rem;
  list-style: none;
}

.footer-links a:hover {
  color: var(--verde);
  text-decoration: underline;
  text-underline-offset: 0.2em;
}

/* 13. RESPONSIVE Y MOVIMIENTO REDUCIDO ==================================== */
@media (max-width: 960px) {
  .secondary-grid {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }
}

@media (max-width: 820px) {
  .nav-container {
    justify-content: flex-start;
  }
  .nav-toggle {
    display: flex;
  }
  .nav-menu {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    justify-content: flex-start;
    gap: 0;
    width: 100%;
    max-height: calc(100vh - 2.85rem);
    overflow-y: auto;
    background-color: var(--bg);
    background-image: var(--paper);
    border-bottom: 1px solid var(--ink);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.06);
  }
  .nav-menu {
    opacity: 0;
    transform: translateY(-8px);
    transition: opacity 200ms var(--ease-out), transform 200ms var(--ease-out), display 200ms allow-discrete;
  }
  .nav-menu.is-open {
    display: flex;
    opacity: 1;
    transform: none;
  }
  @starting-style {
    .nav-menu.is-open {
      opacity: 0;
      transform: translateY(-8px);
    }
  }
  .nav-menu li {
    width: 100%;
    border-top: var(--hairline);
  }
  .nav-link {
    width: 100%;
    padding: 0.85rem 1.2rem;
  }
  .nav-link.active::after {
    display: none;
  }
  .about-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
}

@media (max-width: 768px) {
  .editorial-layout {
    grid-template-columns: minmax(0, 1fr);
    grid-template-areas:
      "lead"
      "secondary"
      "gaceta";
  }
  .gaceta {
    padding-left: 0;
    border-left: none;
  }
  .card--lead {
    padding: 1.5rem 1.25rem 1.25rem;
  }
  .hero-stats {
    grid-template-columns: repeat(2, 1fr);
  }
  .stat-item:nth-child(3) {
    border-left: none;
  }
  .stat-item:nth-child(n + 3) {
    border-top: 1px solid var(--hero-line);
  }
  .hero-smile {
    bottom: 9rem;
  }

  /* Franja superior compacta: prioriza controles (tema/redacción) sobre texto informativo */
  .top-utility-inner {
    gap: 0.5rem;
  }
  .top-edition,
  .top-inst,
  .top-utility-left .top-sep {
    display: none;
  }
  /* La fecha es lo único que queda a la izquierda: debe poder encogerse
     y truncarse en vez de empujar los íconos fuera de la pantalla */
  .top-utility-left {
    min-width: 0;
    flex: 1 1 auto;
    overflow: hidden;
  }
  .top-date {
    display: block;
    min-width: 0;
    overflow: hidden;
    text-overflow: ellipsis;
  }
  .top-utility-right {
    gap: 0.5rem;
    flex-shrink: 0;
  }

  /* Índice y fichas deslizables con desvanecido en los extremos */
  .category-tabs,
  .tag-chips {
    flex-wrap: nowrap;
    overflow-x: auto;
    scrollbar-width: none;
    -webkit-mask-image: linear-gradient(to right, #000 85%, transparent);
    mask-image: linear-gradient(to right, #000 85%, transparent);
    padding-right: 2rem;
  }
  .cat-tab {
    padding: 0.8rem 0.8rem 0.7rem;
    font-size: 0.75rem;
  }
  .cat-tab-full {
    display: none;
  }
  .cat-tab-short {
    display: inline;
  }
  .tag-chips::-webkit-scrollbar {
    display: none;
  }
  .tag-chip {
    white-space: nowrap;
    flex-shrink: 0;
  }
}

@media (max-width: 480px) {
  .wrap {
    padding: 0 1rem;
  }
  /* Portada compacta: el buscador entra en la primera pantalla del teléfono */
  .masthead-main {
    padding: 1rem 0 0.9rem;
  }
  .masthead-logo-img {
    height: 3.4rem;
  }
  .masthead-titles {
    margin-top: 0.25rem;
  }
  .masthead-tagline {
    font-size: 0.92rem;
  }
  .masthead-motto {
    font-size: 0.82rem;
  }
  .hero-inner {
    padding-top: 1.75rem;
  }
  .hero-editorial-lead {
    margin-bottom: 1.4rem;
  }
  .hero-title {
    font-size: 1.85rem;
  }
  .ticker-link {
    font-size: 0.85rem;
  }
  .hero-desc {
    font-size: 1rem;
  }
  .search-box-wrap {
    margin-bottom: 1.75rem;
  }
  .about-pillars {
    grid-template-columns: 1fr;
  }
  .modal-overlay {
    padding: 0.75rem;
  }
  .modal-card {
    padding: 0;
  }
  .modal-toolbar {
    margin: 0;
    padding: 0.65rem 1rem;
  }
  .modal-body {
    padding: 1.25rem 1.25rem 1.75rem;
  }
  .search-matches {
    display: none;
  }
  .card--secondary {
    grid-template-columns: minmax(0, 1fr);
  }
  .secondary-folio {
    font-size: 1.4rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  @keyframes fichaIn { from { opacity: 0; } }
  @keyframes heroIn { from { opacity: 0; } }
  .search-box-wrap,
  .hero-desc {
    animation-delay: 0ms;
  }
  .hero-smile path {
    animation: none;
    stroke-dashoffset: 0;
  }
  /* Cinta quieta: se recorre deslizando a mano */
  .ticker-track {
    animation: none;
  }
  .ticker-viewport {
    overflow-x: auto;
    scrollbar-width: none;
  }
  .ticker-toggle {
    display: none;
  }
  @keyframes portadaIn { from { opacity: 0; } }
  .card.is-entering,
  .editorial-layout.is-arriving .card--brief {
    animation-delay: 0ms;
  }
  .modal-card,
  .modal-overlay.active .modal-card,
  .nav-menu {
    transform: none;
  }
  @starting-style {
    .modal-cite:not([hidden]),
    .modal-pdf-viewer:not([hidden]),
    .nav-menu.is-open {
      transform: none;
    }
  }
  .btn-cite-mini.is-swapping {
    filter: none;
  }
  .card:hover,
  .card--lead:hover,
  .dossier-card:hover {
    transform: none;
  }
  .btn-primary-action:active,
  .btn-secondary-action:active,
  .btn-read:active,
  .btn-pdf:active,
  .btn-cite-mini:active,
  .modal-tool-btn:active,
  .modal-close:active,
  .cat-tab:active,
  .tag-chip:active,
  .theme-toggle:active,
  .gaceta-more:active,
  .search-clear:active {
    transform: none;
  }
}

/* Pantallas táctiles: objetivos de al menos 44px */
@media (pointer: coarse) {
  .theme-toggle,
  .ticker-toggle,
  .nav-toggle,
  .search-clear,
  .modal-close {
    min-width: 2.75rem;
    min-height: 2.75rem;
  }
  .top-social-links a {
    min-width: 2.75rem;
    min-height: 2.75rem;
  }
  .btn-cite-mini,
  .btn-pdf,
  .tag-chip,
  .modal-tool-btn {
    min-height: 2.75rem;
  }
  .nav-toggle {
    padding: 0 0.375rem;
  }
  .top-utility-inner {
    height: auto;
  }
}