*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}

:root{
  --bg:#0f1117;
  --surface:#161927;
  --surface-hover:#1e2235;
  --accent:#2dd4a8;
  --accent-dim:rgba(45,212,168,.12);
  --text:#e4e4e7;
  --text-muted:#71717a;
  --border:#27272a;
  --radius:14px;
  --shadow:0 2px 12px rgba(0,0,0,.35);
  --shadow-hover:0 8px 28px rgba(0,0,0,.5);
}

body{
  font-family:'Inter',system-ui,-apple-system,Segoe UI,Roboto,sans-serif;
  background:var(--bg);
  color:var(--text);
  min-height:100vh;
}

/* ── Listing View ── */
#listingView{
  display:flex;flex-direction:column;align-items:center;
  padding:60px 24px 80px;
}

.listing-layout{
  display:flex;align-items:flex-start;gap:32px;width:100%;max-width:1200px;
}
.listing-layout .posts-grid{
  flex:1;min-width:0;max-width:none;
}

/* ── Sidebar ── */
.sidebar{
  width:280px;flex-shrink:0;
  display:flex;flex-direction:column;gap:24px;
}
.sidebar__widget{
  background:var(--surface);border:1px solid var(--border);
  border-radius:var(--radius);padding:22px 20px;
}
.sidebar__title{
  font-size:1.1rem;font-weight:700;color:var(--text);
  margin-bottom:16px;padding-bottom:12px;
  border-bottom:2px solid var(--accent);
  text-align:right;direction:rtl;
}
.sidebar__list{
  list-style:none;display:flex;flex-direction:column;gap:10px;
}
.sidebar__list li a{
  display:block;font-size:.88rem;color:var(--text-muted);
  text-decoration:none;text-align:right;direction:rtl;
  line-height:1.5;transition:color .2s;
  padding:6px 0;border-bottom:1px solid var(--border);
}
.sidebar__list li:last-child a{border-bottom:none}
.sidebar__list li a:hover{color:var(--accent)}
.sidebar__list--skeleton li{
  height:14px;background:var(--border);border-radius:4px;
  animation:pulse 1.6s ease-in-out infinite;
}

@media(max-width:1024px){
  .listing-layout{flex-direction:column}
  .sidebar{width:100%}
  .sidebar__list li a{text-align:right}
}
@media(max-width:640px){.sidebar__title{font-size:1rem}}

.section-header{
  text-align:center;margin-bottom:48px;max-width:620px;
}
.section-header h2{
  font-size:2.25rem;font-weight:700;letter-spacing:-.02em;margin-bottom:12px;
  background:linear-gradient(135deg,var(--text),var(--accent));
  -webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;
}
.section-header p{color:var(--text-muted);font-size:1.05rem;line-height:1.6}

.posts-grid{
  display:grid;grid-template-columns:repeat(3,1fr);gap:28px;width:100%;
}
@media(max-width:1024px){.posts-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:640px){.posts-grid{grid-template-columns:1fr}.section-header h2{font-size:1.75rem}}

/* Card */
.post-card{
  background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);
  overflow:hidden;box-shadow:var(--shadow);display:flex;flex-direction:column;
  transition:transform .28s cubic-bezier(.4,0,.2,1),box-shadow .28s ease,border-color .28s ease;
  cursor:pointer;
}
.post-card:hover{
  transform:translateY(-5px) scale(1.012);box-shadow:var(--shadow-hover);border-color:var(--accent);
}

.post-card__img-wrap{
  position:relative;width:100%;aspect-ratio:16/9;overflow:hidden;background:var(--accent-dim);
}
.post-card__img-wrap img{
  width:100%;height:100%;object-fit:cover;transition:transform .35s ease;
}
.post-card:hover .post-card__img-wrap img{transform:scale(1.06)}

.post-card__placeholder{
  position:absolute;inset:0;display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,var(--surface) 0%,var(--accent-dim) 100%);
}
.post-card__placeholder svg{width:48px;height:48px;opacity:.35}

.post-card__body{
  padding:20px 22px 24px;display:flex;flex-direction:column;flex:1;
}
.post-card__date{
  font-size:.78rem;color:var(--accent);font-weight:600;
  text-transform:uppercase;letter-spacing:.06em;margin-bottom:8px;
}
.post-card__title{
  font-size:1.15rem;font-weight:650;line-height:1.4;margin-bottom:10px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.post-card__excerpt{
  font-size:.88rem;color:var(--text-muted);line-height:1.6;margin-bottom:auto;padding-bottom:18px;
}
.post-card__link{
  align-self:flex-start;display:inline-flex;align-items:center;gap:6px;
  font-size:.85rem;font-weight:600;color:var(--accent);text-decoration:none;
  transition:gap .2s ease;
}
.post-card__link:hover{gap:10px}
.post-card__link svg{width:16px;height:16px;flex-shrink:0}

/* Skeleton */
.skeleton{
  background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);
  overflow:hidden;animation:pulse 1.6s ease-in-out infinite;
}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.55}}
.skeleton__img{width:100%;aspect-ratio:16/9;background:var(--accent-dim)}
.skeleton__body{padding:20px 22px 24px}
.skeleton__line{height:12px;border-radius:6px;background:var(--border);margin-bottom:12px}
.skeleton__line--short{width:40%}
.skeleton__line--medium{width:75%}
.skeleton__line--long{width:100%}

/* Error */
.error-state{
  grid-column:1/-1;text-align:center;padding:64px 24px;
}
.error-state svg{width:56px;height:56px;color:var(--text-muted);margin-bottom:16px}
.error-state h3{font-size:1.2rem;margin-bottom:8px}
.error-state p{color:var(--text-muted);font-size:.92rem;line-height:1.6;max-width:460px;margin:0 auto 20px}
.error-state__retry{
  display:inline-flex;align-items:center;gap:8px;background:var(--accent);color:var(--bg);
  border:none;border-radius:8px;padding:10px 22px;font-size:.88rem;font-weight:600;
  cursor:pointer;transition:opacity .2s;
}
.error-state__retry:hover{opacity:.85}

/* ── Detail View ── */
#detailView{
  display:none;flex-direction:column;align-items:center;
  padding:40px 24px 80px;
}

.detail__back{
  align-self:flex-start;display:inline-flex;align-items:center;gap:8px;
  background:none;border:1px solid var(--border);color:var(--text);
  padding:10px 20px;border-radius:8px;font-size:.88rem;font-weight:500;
  cursor:pointer;transition:border-color .2s,color .2s,background .2s;
  margin-bottom:32px;
}
.detail__back:hover{border-color:var(--accent);color:var(--accent);background:var(--accent-dim)}
.detail__back svg{width:18px;height:18px}

.detail__container{
  width:100%;max-width:820px;
}

.detail__img-wrap{
  position:relative;width:100%;aspect-ratio:21/9;overflow:hidden;
  border-radius:var(--radius);background:var(--accent-dim);margin-bottom:32px;
}
.detail__img-wrap img{width:100%;height:100%;object-fit:cover}
.detail__placeholder{
  position:absolute;inset:0;display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,var(--surface),var(--accent-dim));
}
.detail__placeholder svg{width:64px;height:64px;opacity:.3}

.detail__meta{
  display:flex;align-items:center;gap:12px;margin-bottom:12px;flex-wrap:wrap;
}
.detail__date{
  font-size:.8rem;color:var(--accent);font-weight:600;
  text-transform:uppercase;letter-spacing:.06em;
}
.detail__author{
  font-size:.8rem;color:var(--text-muted);font-weight:500;
}

.detail__title{
  font-size:2rem;font-weight:700;line-height:1.3;letter-spacing:-.02em;margin-bottom:24px;
}
@media(max-width:640px){.detail__title{font-size:1.5rem}}

.detail__content{
  font-size:1rem;line-height:1.8;color:var(--text);
}
.detail__content p{margin-bottom:1em}
.detail__content h1,.detail__content h2,.detail__content h3,.detail__content h4{
  margin:1.4em 0 .6em;font-weight:700;line-height:1.3;
}
.detail__content h2{font-size:1.5em}
.detail__content h3{font-size:1.25em}
.detail__content a{color:var(--accent);text-decoration:underline}
.detail__content img{
  max-width:100%;height:auto;border-radius:8px;margin:1.2em 0;
}
.detail__content blockquote{
  border-left:3px solid var(--accent);padding-left:16px;margin:1.2em 0;
  color:var(--text-muted);font-style:italic;
}
.detail__content ul,.detail__content ol{
  margin:1em 0;padding-left:24px;
}
.detail__content li{margin-bottom:.4em}
.detail__content pre{
  background:var(--surface);border:1px solid var(--border);border-radius:8px;
  padding:16px;overflow-x:auto;margin:1.2em 0;
}
.detail__content code{
  font-family:'Fira Code',Consolas,monospace;font-size:.9em;
}

.detail__spinner{
  display:flex;flex-direction:column;align-items:center;gap:16px;
  padding:80px 0;color:var(--text-muted);
}
.detail__spinner svg{width:40px;height:40px;animation:spin 1s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}

/* fade-in animation */
.fade-in{animation:fadeIn .3s ease}
@keyframes fadeIn{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}