/* inner.css — páginas interiores de Mates pal Colegio */

/* ===================================================
   PAGE HERO (interior)
   =================================================== */
.page-hero {
  padding: calc(var(--nav-h) + 56px) 52px 56px;
  position: relative; overflow: hidden;
  background: var(--negro);
}
.page-hero-bg {
  position: absolute; inset: 0; pointer-events: none;
}
.page-hero-glow {
  position: absolute; width: 500px; height: 500px; border-radius: 50%;
  top: -150px; left: -100px; opacity: .6;
}
.page-hero-inner {
  max-width: 1120px; margin: 0 auto;
  position: relative; z-index: 1;
  display: grid; grid-template-columns: 1fr auto;
  align-items: center; gap: 40px;
}
.page-hero-left {}
.page-breadcrumb {
  display: flex; align-items: center; gap: 8px;
  font-family: var(--font-mono); font-size: .65rem;
  letter-spacing: .1em; text-transform: uppercase;
  color: var(--muted); margin-bottom: 20px;
}
.page-breadcrumb a { color: var(--muted); text-decoration: none; transition: color .2s; }
.page-breadcrumb a:hover { color: var(--white); }
.page-breadcrumb span { color: rgba(255,255,255,.25); }
.page-hero h1 {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3.2rem);
  font-weight: 700; line-height: 1.1;
  color: var(--white); margin-bottom: 18px;
}
.page-hero p {
  font-size: 1rem; color: rgba(255,255,255,.6);
  max-width: 600px; line-height: 1.75;
}
.page-hero-badge {
  display: flex; flex-direction: column; align-items: center; gap: 6px;
  font-family: var(--font-mono); font-size: .65rem;
  color: var(--muted); text-transform: uppercase; letter-spacing: .1em;
}
.page-hero-icon {
  font-size: 4rem; line-height: 1;
  filter: drop-shadow(0 0 24px currentColor);
}

/* ===================================================
   GRID CATEGORÍA
   =================================================== */
.cat-layout {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 0;
  max-width: 1120px;
  margin: 0 auto;
  min-height: 60vh;
}

/* Sidebar */
.cat-sidebar {
  background: var(--card);
  border-right: 1px solid var(--border);
  padding: 32px 24px;
  position: sticky; top: var(--nav-h);
  height: calc(100vh - var(--nav-h));
  overflow-y: auto;
}
.cat-sidebar::-webkit-scrollbar { width: 4px; }
.cat-sidebar::-webkit-scrollbar-track { background: transparent; }
.cat-sidebar::-webkit-scrollbar-thumb { background: var(--border); border-radius: 2px; }

.sidebar-title {
  font-family: var(--font-mono); font-size: .65rem;
  letter-spacing: .15em; text-transform: uppercase;
  color: var(--muted); margin-bottom: 16px; display: block;
}

.sidebar-nav { display: flex; flex-direction: column; gap: 4px; }
.sidebar-link {
  display: flex; align-items: center; gap: 10px;
  padding: 10px 12px; border-radius: 8px;
  text-decoration: none; color: rgba(255,255,255,.65);
  font-size: .85rem; font-weight: 500;
  transition: background .2s, color .2s;
  border: 1px solid transparent;
}
.sidebar-link:hover {
  background: rgba(255,255,255,.05);
  color: var(--white);
}
.sidebar-link.active {
  background: rgba(255,255,255,.07);
  color: var(--white);
  border-color: var(--border);
}
.sidebar-link .sl-ico { font-size: 1rem; flex-shrink: 0; }
.sidebar-link .sl-count {
  margin-left: auto; font-family: var(--font-mono);
  font-size: .6rem; color: var(--muted);
}

.sidebar-section { margin-top: 24px; padding-top: 20px; border-top: 1px solid var(--border); }

.sidebar-eje-title {
  font-size: .7rem; font-weight: 700; color: var(--muted);
  letter-spacing: .08em; text-transform: uppercase;
  margin-bottom: 8px; display: block;
}
.sidebar-eje-links { display: flex; flex-direction: column; gap: 2px; }
.sidebar-eje-link {
  display: flex; align-items: center; gap: 8px;
  padding: 7px 10px; border-radius: 7px;
  text-decoration: none; font-size: .8rem;
  color: rgba(255,255,255,.5);
  transition: background .15s, color .15s;
}
.sidebar-eje-link:hover { background: rgba(255,255,255,.04); color: rgba(255,255,255,.8); }
.sidebar-eje-link::before { content: '›'; font-size: .7rem; color: var(--muted); }

/* Main content area */
.cat-main { padding: 40px 44px; }

/* ===================================================
   GRID DE POSTS (dentro de categoría)
   =================================================== */
.posts-header {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 28px; padding-bottom: 20px;
  border-bottom: 1px solid var(--border);
}
.posts-header h2 {
  font-family: var(--font-display); font-size: 1.5rem; font-weight: 700;
}
.posts-count {
  font-family: var(--font-mono); font-size: .7rem;
  color: var(--muted); letter-spacing: .08em;
}

.posts-grid {
  display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px;
}

.post-card {
  background: var(--card); border: 1px solid var(--border);
  border-radius: 14px; padding: 24px;
  text-decoration: none; color: var(--white);
  display: flex; flex-direction: column; gap: 10px;
  transition: border-color .2s, transform .2s, box-shadow .2s;
}
.post-card:hover { transform: translateY(-3px); }
.post-card.cc-r:hover { border-color: var(--rojo); box-shadow: 0 8px 28px rgba(237,77,110,.1); }
.post-card.cc-p:hover { border-color: var(--purpura); box-shadow: 0 8px 28px rgba(100,68,227,.1); }
.post-card.cc-b:hover { border-color: var(--azul); box-shadow: 0 8px 28px rgba(18,110,235,.1); }
.post-card.cc-y:hover { border-color: var(--amarillo); box-shadow: 0 8px 28px rgba(242,188,32,.1); }

.post-card-tag {
  font-family: var(--font-mono); font-size: .62rem;
  letter-spacing: .12em; text-transform: uppercase; font-weight: 500;
}
.tag-c-r { color: var(--rojo); }
.tag-c-p { color: var(--purpura); }
.tag-c-b { color: var(--azul); }
.tag-c-y { color: var(--amarillo); }

.post-card h3 {
  font-family: var(--font-display); font-size: 1.15rem;
  font-weight: 700; line-height: 1.25; color: var(--white);
}
.post-card p {
  font-size: .82rem; color: var(--muted); line-height: 1.6;
  flex: 1;
}
.post-card-footer {
  display: flex; align-items: center; justify-content: space-between;
  margin-top: 6px; padding-top: 12px; border-top: 1px solid var(--border);
}
.post-card-link {
  font-size: .78rem; font-weight: 600;
  display: flex; align-items: center; gap: 6px;
  transition: gap .2s;
}
.post-card:hover .post-card-link { gap: 10px; }
.post-card-meta {
  font-family: var(--font-mono); font-size: .62rem; color: var(--muted);
}

/* ===================================================
   PÁGINA DE ARTÍCULO (post individual)
   =================================================== */
.article-layout {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: 48px;
  max-width: 1120px; margin: 0 auto;
  padding: 48px 52px;
}

.article-body {}
.article-body h2 {
  font-family: var(--font-display); font-size: 1.6rem; font-weight: 700;
  color: var(--white); margin: 32px 0 14px; line-height: 1.2;
}
.article-body h3 {
  font-family: var(--font-display); font-size: 1.2rem; font-weight: 700;
  color: rgba(255,255,255,.9); margin: 24px 0 10px;
}
.article-body p {
  font-size: .95rem; color: rgba(255,255,255,.72); line-height: 1.8; margin-bottom: 16px;
}
.article-body ul, .article-body ol {
  margin: 12px 0 18px 20px; display: flex; flex-direction: column; gap: 8px;
}
.article-body li {
  font-size: .92rem; color: rgba(255,255,255,.68); line-height: 1.65;
}
.article-body strong { color: var(--white); font-weight: 600; }
.article-body em { color: rgba(255,255,255,.8); font-style: italic; }
.article-body img { border-radius: 10px; margin: 18px 0; max-width: 100%; }
.article-body a { color: var(--azul); text-decoration: underline; }

/* Math display */
.math-block {
  background: rgba(255,255,255,.04); border: 1px solid var(--border);
  border-left: 4px solid var(--purpura);
  border-radius: 0 10px 10px 0;
  padding: 18px 22px; margin: 20px 0;
  font-family: var(--font-mono); font-size: .95rem;
  color: rgba(255,255,255,.85); overflow-x: auto;
  line-height: 1.9;
}
.math-inline {
  background: rgba(255,255,255,.06);
  padding: 2px 7px; border-radius: 5px;
  font-family: var(--font-mono); font-size: .88em;
  color: var(--amarillo);
}

/* Ejemplo / ejercicio resuelto */
.ejercicio-box {
  background: linear-gradient(135deg, rgba(100,68,227,.08), rgba(18,110,235,.06));
  border: 1px solid rgba(100,68,227,.2);
  border-radius: 12px; padding: 22px 24px; margin: 22px 0;
}
.ejercicio-box .ej-label {
  font-family: var(--font-mono); font-size: .65rem;
  letter-spacing: .14em; text-transform: uppercase;
  color: var(--purpura); margin-bottom: 10px; display: block;
}
.ejercicio-box p { color: rgba(255,255,255,.75); margin-bottom: 10px; }
.ejercicio-box .solucion {
  margin-top: 14px; padding-top: 14px;
  border-top: 1px solid rgba(100,68,227,.2);
}
.ejercicio-box .sol-label {
  font-family: var(--font-mono); font-size: .62rem;
  color: var(--amarillo); text-transform: uppercase;
  letter-spacing: .12em; display: block; margin-bottom: 8px;
}

/* Concepto / definición */
.concepto-box {
  background: rgba(237,77,110,.06); border: 1px solid rgba(237,77,110,.18);
  border-radius: 12px; padding: 20px 22px; margin: 20px 0;
}
.concepto-box .c-label {
  font-family: var(--font-mono); font-size: .62rem;
  letter-spacing: .14em; text-transform: uppercase;
  color: var(--rojo); margin-bottom: 8px; display: block;
}

/* Advertencia / tip */
.tip-box {
  background: rgba(242,188,32,.06); border: 1px solid rgba(242,188,32,.2);
  border-radius: 10px; padding: 16px 20px; margin: 18px 0;
  display: flex; gap: 12px; align-items: flex-start;
}
.tip-box .tip-ico { font-size: 1.2rem; flex-shrink: 0; margin-top: 2px; }
.tip-box p { margin: 0; font-size: .88rem; color: rgba(255,255,255,.72); }

/* ===================================================
   SIDEBAR DEL ARTÍCULO
   =================================================== */
.article-sidebar { position: sticky; top: calc(var(--nav-h) + 24px); }

.aside-card {
  background: var(--card); border: 1px solid var(--border);
  border-radius: 14px; padding: 22px;
  margin-bottom: 18px;
}
.aside-card h4 {
  font-size: .8rem; font-weight: 700; color: var(--white);
  margin-bottom: 14px; padding-bottom: 10px;
  border-bottom: 1px solid var(--border);
  font-family: var(--font-mono); text-transform: uppercase;
  letter-spacing: .1em;
}
.aside-link {
  display: flex; align-items: center; gap: 8px;
  font-size: .8rem; color: rgba(255,255,255,.58);
  text-decoration: none; padding: 7px 0;
  border-bottom: 1px solid rgba(255,255,255,.04);
  transition: color .2s;
}
.aside-link:last-child { border-bottom: none; }
.aside-link:hover { color: var(--white); }
.aside-link::before { content: '›'; color: var(--muted); }

.paes-aside {
  background: linear-gradient(135deg, rgba(100,68,227,.15), rgba(18,110,235,.1));
  border-color: rgba(100,68,227,.25);
  text-align: center;
}
.paes-aside .big-icon { font-size: 2.5rem; margin-bottom: 10px; }
.paes-aside p { font-size: .82rem; color: rgba(255,255,255,.62); margin-bottom: 14px; }

.toc-list { display: flex; flex-direction: column; gap: 4px; }
.toc-item {
  display: flex; align-items: center; gap: 8px;
  font-size: .78rem; color: rgba(255,255,255,.5);
  text-decoration: none; padding: 5px 0;
  transition: color .2s;
  counter-increment: toc;
}
.toc-item::before {
  content: counter(toc, decimal-leading-zero);
  font-family: var(--font-mono); font-size: .6rem;
  color: var(--muted); min-width: 24px;
}
.toc-item:hover { color: var(--white); }
.toc-list { counter-reset: toc; }

/* ===================================================
   PAES PAGE — especial
   =================================================== */
.paes-hero-strip {
  display: flex; gap: 16px; margin-top: 24px; flex-wrap: wrap;
}
.paes-stat-pill {
  background: rgba(255,255,255,.06); border: 1px solid var(--border);
  border-radius: 999px; padding: 8px 18px;
  font-family: var(--font-mono); font-size: .72rem; color: var(--white);
  display: flex; align-items: center; gap: 8px;
}
.paes-stat-pill .dot { width: 8px; height: 8px; border-radius: 50%; }
.dot-r { background: var(--rojo); }
.dot-p { background: var(--purpura); }
.dot-b { background: var(--azul); }
.dot-y { background: var(--amarillo); }

.resolucion-grid {
  display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px;
}
.resolucion-card {
  background: var(--card); border: 1px solid var(--border);
  border-radius: 12px; padding: 20px;
  text-decoration: none; color: var(--white);
  display: flex; flex-direction: column; gap: 8px;
  transition: border-color .2s, transform .2s;
}
.resolucion-card:hover { transform: translateY(-2px); border-color: var(--purpura); }
.res-type {
  font-family: var(--font-mono); font-size: .62rem;
  letter-spacing: .1em; text-transform: uppercase;
}
.res-type.m1 { color: var(--rojo); }
.res-type.m2 { color: var(--purpura); }
.res-type.guia { color: var(--azul); }
.resolucion-card h3 { font-size: .95rem; font-weight: 700; line-height: 1.3; }
.res-cta { font-size: .78rem; color: var(--muted); margin-top: auto; }

/* ===================================================
   PROFESOR PAGE
   =================================================== */
.prof-page-grid {
  display: grid; grid-template-columns: 360px 1fr; gap: 60px;
  align-items: start; max-width: 1120px; margin: 0 auto; padding: 52px;
}
.prof-page-img {
  position: sticky; top: calc(var(--nav-h) + 24px);
}
.prof-page-img img {
  width: 100%; border-radius: 20px; object-fit: cover;
  display: block;
}
.prof-page-accent {
  height: 4px; border-radius: 0 0 20px 20px;
  background: linear-gradient(90deg, var(--rojo), var(--purpura), var(--azul), var(--amarillo));
}
.prof-page-badges {
  display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-top: 18px;
}
.prof-page-badge {
  background: var(--card); border: 1px solid var(--border);
  border-radius: 10px; padding: 12px 14px;
  font-size: .75rem; color: rgba(255,255,255,.7);
  display: flex; align-items: center; gap: 8px;
  font-family: var(--font-mono); font-weight: 500;
}
.timeline { display: flex; flex-direction: column; gap: 0; margin: 28px 0; }
.timeline-item {
  display: flex; gap: 18px; padding-bottom: 28px;
  position: relative;
}
.timeline-item::before {
  content: ''; position: absolute;
  left: 19px; top: 38px; bottom: 0;
  width: 1px; background: var(--border);
}
.timeline-item:last-child::before { display: none; }
.tl-dot {
  width: 40px; height: 40px; border-radius: 50%; flex-shrink: 0;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.1rem; border: 2px solid var(--border);
}
.tl-dot.d-r { background: rgba(237,77,110,.15); border-color: rgba(237,77,110,.3); }
.tl-dot.d-p { background: rgba(100,68,227,.15); border-color: rgba(100,68,227,.3); }
.tl-dot.d-b { background: rgba(18,110,235,.15); border-color: rgba(18,110,235,.3); }
.tl-dot.d-y { background: rgba(242,188,32,.15); border-color: rgba(242,188,32,.3); }
.tl-content {}
.tl-year {
  font-family: var(--font-mono); font-size: .65rem;
  letter-spacing: .1em; color: var(--muted); margin-bottom: 4px;
}
.tl-title { font-weight: 700; font-size: .95rem; color: var(--white); margin-bottom: 4px; }
.tl-desc { font-size: .82rem; color: var(--muted); line-height: 1.6; }

/* ===================================================
   RESPONSIVE interiores
   =================================================== */
@media (max-width: 1024px) {
  .cat-layout { grid-template-columns: 240px 1fr; }
  .article-layout { grid-template-columns: 1fr; padding: 32px 20px; }
  .article-sidebar { position: static; }
  .prof-page-grid { grid-template-columns: 1fr; padding: 32px 20px; }
  .prof-page-img { position: static; }
}
@media (max-width: 900px) {
  .page-hero { padding: calc(var(--nav-h) + 40px) 20px 40px; }
  .page-hero-inner { grid-template-columns: 1fr; }
  .cat-layout { grid-template-columns: 1fr; }
  .cat-sidebar { position: static; height: auto; }
  .cat-main { padding: 28px 20px; }
  .posts-grid { grid-template-columns: 1fr; }
  .resolucion-grid { grid-template-columns: 1fr; }
  .prof-page-badges { grid-template-columns: 1fr; }
}