/* ==========================================================================
   PLAN CANJE — style.css
   Portal informativo sobre planes de canje y promos de tecnología en Argentina
   Paleta: petróleo #0F3D3E / ámbar #E8A33D / papel #F7F5F0 / texto #1A1A1A
   ========================================================================== */

:root {
  --color-primary: #0F3D3E;      /* petróleo — confianza, header, títulos */
  --color-primary-light: #17575A;
  --color-accent: #E8A33D;       /* ámbar — ahorro, ofertas, CTA */
  --color-accent-dark: #C7822A;
  --color-paper: #F7F5F0;        /* fondo general */
  --color-paper-alt: #EFEBE2;    /* fondo alterno de secciones */
  --color-text: #1A1A1A;
  --color-text-soft: #4A6B6C;    /* texto secundario / metadatos */
  --color-border: #DDD7C8;

  --font-display: "Fraunces", "Georgia", serif;
  --font-body: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  color: var(--color-text);
  background-color: var(--color-paper);
  line-height: 1.6;
}

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

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}

h1, h2, h3, h4,
.font-display {
  font-family: var(--font-display);
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--color-primary);
}

p { max-width: 68ch; }

/* ---------- Barra superior de utilidad ---------- */
.top-bar {
  background: var(--color-primary);
  color: #E7E2D6;
  font-size: 0.85rem;
}
.top-bar a { color: #E7E2D6; text-decoration: none; }
.top-bar a:hover { color: var(--color-accent); }

/* ---------- Navegación ---------- */
.main-nav {
  background: var(--color-paper);
  border-bottom: 1px solid var(--color-border);
}
.main-nav .navbar-brand {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.5rem;
  color: var(--color-primary);
}
.main-nav .navbar-brand span { color: var(--color-accent); }
.main-nav .nav-link {
  color: var(--color-text);
  font-weight: 500;
  padding: 0.5rem 1rem !important;
}
.main-nav .nav-link:hover,
.main-nav .nav-link.active {
  color: var(--color-primary-light);
  text-decoration: underline;
  text-decoration-color: var(--color-accent);
  text-decoration-thickness: 2px;
  text-underline-offset: 6px;
}

/* ---------- Hero editorial ---------- */
.hero {
  border-bottom: 1px solid var(--color-border);
  padding-block: 3rem;
}
.hero-kicker {
  color: var(--color-accent-dark);
  font-weight: 600;
  font-size: 0.95rem;
}
.hero-title {
  font-size: clamp(2rem, 4vw, 3.2rem);
  line-height: 1.08;
  max-width: 18ch;
}
.hero-dek {
  color: var(--color-text-soft);
  font-size: 1.1rem;
  max-width: 55ch;
}
.hero-figure {
  background: var(--color-primary);
  border-radius: 4px;
  aspect-ratio: 4 / 3;
  display: flex;
  align-items: flex-end;
  padding: 1.25rem;
  color: #F7F5F0;
  position: relative;
  overflow: hidden;
}
.hero-figure img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.hero-figure::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(160deg, var(--color-primary-light) 0%, var(--color-primary) 65%);
}
.hero-figure .hero-figure-tag {
  position: relative;
  background: var(--color-accent);
  color: #1A1A1A;
  font-weight: 600;
  padding: 0.3rem 0.7rem;
  border-radius: 3px;
  font-size: 0.85rem;
}

/* ---------- Secciones de categoría ---------- */
.section-heading {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  border-bottom: 2px solid var(--color-primary);
  padding-bottom: 0.5rem;
  margin-bottom: 1.75rem;
}
.section-heading h2 { margin: 0; font-size: 1.6rem; }
.section-heading a {
  color: var(--color-primary-light);
  font-weight: 600;
  font-size: 0.95rem;
  text-decoration: none;
  white-space: nowrap;
}
.section-heading a:hover { color: var(--color-accent-dark); }

.category-block { padding-block: 2.75rem; }
.category-block.alt { background: var(--color-paper-alt); }

/* ---------- Tarjetas de nota ---------- */
.post-card {
  display: flex;
  flex-direction: column;
  height: 100%;
  text-decoration: none;
  color: inherit;
}
.post-card .post-thumb {
  background: var(--color-primary);
  aspect-ratio: 16 / 10;
  border-radius: 3px;
  margin-bottom: 0.9rem;
  position: relative;
  overflow: hidden;
}
.post-card .post-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.post-card .post-thumb::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(200deg, var(--color-primary-light), var(--color-primary));
  opacity: 0.95;
  z-index: -1;
}
.post-card .post-category {
  color: var(--color-accent-dark);
  font-size: 0.8rem;
  font-weight: 600;
}
.post-card h3 {
  font-size: 1.15rem;
  margin: 0.3rem 0 0.4rem;
  line-height: 1.3;
}
.post-card:hover h3 { color: var(--color-primary-light); }
.post-card p {
  color: var(--color-text-soft);
  font-size: 0.95rem;
  margin-bottom: 0;
}
.post-card .post-meta {
  color: var(--color-text-soft);
  font-size: 0.8rem;
  margin-top: 0.6rem;
}

/* Nota principal (más grande) dentro de una grilla de categoría */
.post-card.featured .post-thumb { aspect-ratio: 16 / 9; }
.post-card.featured h3 { font-size: 1.5rem; }

/* ---------- Bloque explicativo / cómo funciona ---------- */
.how-it-works {
  background: var(--color-primary);
  color: #F0EEE6;
  padding-block: 3.5rem;
}
.how-it-works h2 { color: #FFFFFF; }
.step-list { counter-reset: step; }
.step-item {
  border-top: 1px solid rgba(247,245,240,0.25);
  padding-block: 1.1rem;
  display: flex;
  gap: 1rem;
}
.step-item:last-child { border-bottom: 1px solid rgba(247,245,240,0.25); }
.step-number {
  font-family: var(--font-display);
  color: var(--color-accent);
  font-size: 1.3rem;
  min-width: 2ch;
}

/* ---------- Newsletter / Sheets form ---------- */
.newsletter {
  background: var(--color-paper-alt);
  border: 1px solid var(--color-border);
  border-radius: 4px;
  padding: 2rem;
}
.newsletter .btn-accent {
  background: var(--color-accent);
  border-color: var(--color-accent);
  color: #1A1A1A;
  font-weight: 600;
}
.newsletter .btn-accent:hover {
  background: var(--color-accent-dark);
  border-color: var(--color-accent-dark);
  color: #1A1A1A;
}
.newsletter .form-control {
  border-radius: 3px;
  border-color: var(--color-border);
}
#newsletter-msg { font-size: 0.9rem; }

/* ---------- Footer ---------- */
footer {
  background: var(--color-primary);
  color: #C9C4B6;
  padding-block: 2.5rem 1.5rem;
  font-size: 0.9rem;
}
footer a { color: #E7E2D6; text-decoration: none; }
footer a:hover { color: var(--color-accent); }
footer h5 {
  color: #FFFFFF;
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 700;
  margin-bottom: 0.9rem;
}
footer hr { border-color: rgba(247,245,240,0.15); }

@media (max-width: 767.98px) {
  .hero { padding-block: 2rem; }
  .category-block { padding-block: 2rem; }
}

/* ---------- Breadcrumb ---------- */
.breadcrumb-item + .breadcrumb-item::before { color: var(--color-text-soft); }
.breadcrumb a { text-decoration: none; }
.breadcrumb a:hover { text-decoration: underline; }
.breadcrumb-item.active { color: var(--color-text-soft); }

/* ---------- Cuerpo de artículo ---------- */
.article-body {
  font-size: 1.08rem;
  color: var(--color-text);
}
.article-body p { max-width: none; margin-bottom: 1.25rem; }
.article-body h2 {
  font-size: 1.4rem;
  margin-top: 2.25rem;
  margin-bottom: 0.9rem;
}
.article-body ul {
  margin-bottom: 1.25rem;
  padding-left: 1.25rem;
}
.article-body li { margin-bottom: 0.4rem; }

/* ---------- Paginación ---------- */
.pagination .page-link {
  color: var(--color-primary);
  border-color: var(--color-border);
}
.pagination .page-item.active .page-link {
  background: var(--color-primary);
  border-color: var(--color-primary);
}
.pagination .page-item.disabled .page-link {
  color: var(--color-text-soft);
}

/* ---------- Acordeón de FAQ (paleta propia, no el azul de Bootstrap) ---------- */
.accordion-item {
  border-color: var(--color-border);
}
.accordion-button {
  font-weight: 600;
  color: var(--color-primary);
}
.accordion-button:not(.collapsed) {
  color: var(--color-primary);
  background-color: var(--color-paper-alt);
  box-shadow: none;
}
.accordion-button:focus {
  box-shadow: 0 0 0 0.2rem rgba(15, 61, 62, 0.2);
}
.accordion-button::after {
  filter: hue-rotate(140deg) saturate(0.6);
}