/* ============================================================
   WAO Landing — Blog (loaded after redesign.css)
   Used by the home Blog section (index.php #blogs), the /news/
   listing (page-news.php) and single posts (single.php).
   Only uses Design-System tokens defined in redesign.css.

     1. Section head + "Xem tất cả"
     2. Post card grid (.rd-post)
     2b. Featured slider (home, assets/js/blog.js)
     3. Category badge tones
     4. Pagination
     5. Page hero (listing + post)
     6. Article body (.rd-prose)
   ============================================================ */

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

/* ====== 1. SECTION HEAD ====== */
.rd-blog__head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:44px;}
.rd-blog__head .rd-head{max-width:860px;}
.rd-blog__eyebrow{text-transform:uppercase;letter-spacing:0.08em;font-size:11.5px;padding:7px 12px;margin-bottom:16px;}
.rd-blog__eyebrow svg{width:13px;height:13px;}
.rd-blog__all{flex:none;background:var(--surface-card);color:var(--text-brand);border-color:var(--blue-300);}
.rd-blog__all:hover{background:var(--brand-subtle);border-color:var(--brand);}
.rd-blog__all svg{transition:transform var(--dur-fast) var(--ease-out);}
.rd-blog__all:hover svg{transform:translateX(3px);}
@media (max-width:760px){
  .rd-blog__head{flex-direction:column;align-items:flex-start;gap:20px;margin-bottom:32px;}
  .rd-blog__actions{width:100%;justify-content:space-between;}
}

/* ====== 2. POST CARDS ====== */
.rd-posts{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
@media (max-width:960px){.rd-posts{grid-template-columns:repeat(2,1fr);}}
@media (max-width:600px){.rd-posts{grid-template-columns:1fr;}}

.rd-post{display:flex;flex-direction:column;background:var(--surface-card);border:1px solid var(--border);
  border-radius:var(--radius-lg);padding:14px;color:inherit;text-decoration:none;
  transition:opacity .7s var(--ease-out),transform var(--dur-base) var(--ease-out),box-shadow var(--dur-base) var(--ease-out),border-color var(--dur-base) var(--ease-out);}
.rd-post:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:transparent;}
.rd-post:focus-visible{outline:none;box-shadow:0 0 0 3px var(--ring);}

.rd-post__media{aspect-ratio:16/10;border-radius:var(--radius-md);overflow:hidden;background:var(--surface-sunken);}
.rd-post__media img{width:100%;height:100%;object-fit:cover;transition:transform var(--dur-slow) var(--ease-out);}
.rd-post:hover .rd-post__media img{transform:scale(1.04);}
.rd-post__ph{width:100%;height:100%;display:grid;place-items:center;
  background:radial-gradient(420px 220px at 20% 0%,rgba(30,79,240,0.55),transparent 62%),
    radial-gradient(360px 200px at 100% 100%,rgba(18,181,165,0.30),transparent 60%),var(--navy-900);}
.rd-post__ph img{width:72px;height:auto;opacity:.85;}
.rd-post:hover .rd-post__ph img{transform:none;}

.rd-post__body{display:flex;flex-direction:column;flex:1;padding:16px 6px 6px;}
.rd-post__meta{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:12px;}
.rd-post__meta time{font-size:12.5px;color:var(--text-faint);white-space:nowrap;margin-left:auto;}
.rd-post__title{font-size:17px;line-height:1.35;font-weight:700;color:var(--text-strong);margin:0 0 10px;
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;}
.rd-post__excerpt{font-size:13.5px;line-height:1.6;color:var(--text-muted);margin:0 0 18px;
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;}
.rd-post__more{margin-top:auto;font-size:13.5px;font-weight:600;color:var(--text-brand);display:inline-flex;align-items:center;gap:6px;}
.rd-post__more span{transition:transform var(--dur-fast) var(--ease-out);}
.rd-post:hover .rd-post__more span{transform:translateX(3px);}

/* ====== 2b. FEATURED SLIDER ====== */
.rd-blog__actions{display:flex;align-items:center;gap:12px;flex:none;}
.rd-slider__nav{display:flex;gap:8px;}
.rd-slider__btn{width:44px;height:44px;border-radius:50%;display:grid;place-items:center;cursor:pointer;
  background:var(--surface-card);border:1px solid var(--border-strong);color:var(--text-strong);font-size:18px;line-height:1;
  transition:background var(--dur-fast),border-color var(--dur-fast),color var(--dur-fast);}
.rd-slider__btn:hover{border-color:var(--brand);color:var(--text-brand);background:var(--brand-subtle);}
.rd-slider__btn:focus-visible{outline:none;box-shadow:0 0 0 3px var(--ring);}
.rd-blog--static .rd-slider__nav,.rd-blog--static .rd-slider__dots{display:none;}

/* Track: horizontal grid + native scroll-snap. Vertical padding (cancelled by
   negative margin) leaves room for the card hover lift + shadow. */
.rd-slider__track{display:grid;grid-auto-flow:column;grid-auto-columns:calc((100% - 48px) / 3);gap:24px;
  overflow-x:auto;overscroll-behavior-x:contain;scroll-snap-type:x mandatory;scrollbar-width:none;
  padding:8px 0 28px;margin:-8px 0 -28px;}
.rd-slider__track::-webkit-scrollbar{display:none;}
.rd-slider__track:focus-visible{outline:none;box-shadow:0 0 0 3px var(--ring);border-radius:var(--radius-lg);}
.rd-slide{scroll-snap-align:start;}
@media (max-width:960px){.rd-slider__track{grid-auto-columns:calc((100% - 24px) / 2);}}
@media (max-width:600px){.rd-slider__track{grid-auto-columns:86%;gap:16px;}}

.rd-slider__dots{display:flex;justify-content:center;gap:8px;margin-top:36px;}
.rd-slider__dot{width:8px;height:8px;padding:0;border:0;border-radius:var(--radius-pill);background:var(--slate-300);cursor:pointer;
  transition:width var(--dur-base) var(--ease-out),background var(--dur-base);}
.rd-slider__dot.is-active{width:24px;background:var(--brand);}

.rd-blog__empty{text-align:center;padding:40px 0;}
.rd-blog__empty h2{font-size:var(--fs-h1);margin-bottom:10px;}
.rd-blog__empty p{color:var(--text-muted);margin-bottom:24px;}

/* ====== 3. CATEGORY TONES (see wao_cat_tone) ====== */
.rd-tone--brand{background:var(--blue-50);color:var(--blue-700);}
.rd-tone--green{background:var(--green-50);color:var(--green-600);}
.rd-tone--teal{background:var(--teal-50);color:var(--teal-700);}
.rd-tone--amber{background:var(--amber-50);color:var(--amber-600);}
.rd-tone--neutral{background:var(--surface-sunken);color:var(--slate-600);}

/* ====== 4. PAGINATION ====== */
.rd-pager{display:flex;justify-content:center;align-items:center;flex-wrap:wrap;gap:8px;margin-top:52px;}
.rd-pager .page-numbers,.rd-pager .post-page-numbers{min-width:42px;height:42px;padding:0 12px;display:inline-flex;align-items:center;justify-content:center;
  border-radius:var(--radius-pill);border:1px solid var(--border);background:var(--surface-card);
  font-size:14px;font-weight:600;color:var(--text-body);text-decoration:none;
  transition:background var(--dur-fast),border-color var(--dur-fast),color var(--dur-fast);}
.rd-pager a.page-numbers:hover,.rd-pager a.post-page-numbers:hover{border-color:var(--brand);color:var(--text-brand);}
.rd-pager .current{background:var(--brand);border-color:var(--brand);color:#fff;box-shadow:var(--shadow-brand);}
.rd-pager .dots{border:0;background:none;min-width:auto;padding:0 4px;}

/* ====== 5. PAGE HERO (listing + post) ====== */
.rd-pagehero{position:relative;overflow:hidden;background:var(--surface-inverse);color:var(--text-on-inverse);padding:150px 0 72px;
  background-image:
    radial-gradient(1000px 460px at 10% -20%,rgba(30,79,240,0.40),transparent 58%),
    radial-gradient(800px 420px at 96% 0%,rgba(18,181,165,0.16),transparent 56%);}
.rd-pagehero::after{content:"";position:absolute;inset:0;pointer-events:none;opacity:.5;
  background-image:linear-gradient(rgba(255,255,255,0.04) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,0.04) 1px,transparent 1px);
  background-size:60px 60px;-webkit-mask-image:radial-gradient(760px 420px at 20% 0%,#000,transparent 78%);
  mask-image:radial-gradient(760px 420px at 20% 0%,#000,transparent 78%);}
.rd-pagehero .rd-wrap{position:relative;z-index:1;}
.rd-pagehero h1{font-size:48px;line-height:1.1;letter-spacing:-0.025em;color:#fff;font-weight:800;margin:20px 0 0;max-width:22ch;}
.rd-pagehero .rd-hero__lead{max-width:60ch;}
.rd-crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13.5px;color:#7f8bab;margin-bottom:22px;}
.rd-crumbs a{color:#cdd6ef;}
.rd-crumbs a:hover{color:#fff;}
.rd-pagehero--post h1{font-size:42px;max-width:28ch;margin-top:18px;}
.rd-postmeta{display:flex;align-items:center;flex-wrap:wrap;gap:14px;margin-top:22px;font-size:14px;color:var(--text-on-inverse-muted);}
.rd-postmeta span{display:inline-flex;align-items:center;gap:7px;}
.rd-postmeta svg{width:16px;height:16px;}
.rd-postmeta .sep{width:4px;height:4px;border-radius:50%;background:#475569;}
@media (max-width:760px){
  .rd-pagehero{padding:132px 0 56px;}
  .rd-pagehero h1,.rd-pagehero--post h1{font-size:32px;}
}

/* ====== 6. ARTICLE ====== */
.rd-article{padding:56px 0 88px;background:var(--surface-card);}
.rd-article__inner{max-width:780px;margin:0 auto;}
.rd-article__cover{margin:0 0 40px;border-radius:var(--radius-xl);overflow:hidden;box-shadow:var(--shadow-md);}
.rd-article__cover img{width:100%;height:auto;}
.rd-article__foot{display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;margin-top:48px;padding-top:28px;border-top:1px solid var(--border);}

.rd-prose{font-size:17px;line-height:1.75;color:var(--text-body);overflow-wrap:break-word;}
.rd-prose > *{margin:0 0 22px;}
.rd-prose > *:last-child{margin-bottom:0;}
.rd-prose h2{font-size:28px;line-height:1.25;margin:48px 0 16px;}
.rd-prose h3{font-size:22px;line-height:1.3;margin:36px 0 12px;}
.rd-prose h4{font-size:18px;margin:28px 0 10px;}
.rd-prose a{color:var(--text-brand);text-decoration:underline;text-underline-offset:3px;}
.rd-prose strong{color:var(--text-strong);}
.rd-prose ul,.rd-prose ol{padding-left:24px;}
.rd-prose li{margin:6px 0;}
.rd-prose li::marker{color:var(--brand);}
.rd-prose blockquote{margin-left:0;margin-right:0;padding:18px 22px;border-left:4px solid var(--brand);background:var(--brand-subtle);border-radius:0 var(--radius-md) var(--radius-md) 0;color:var(--text-strong);}
.rd-prose blockquote p{margin:0;}
.rd-prose img{height:auto;border-radius:var(--radius-md);}
.rd-prose figure{margin-left:0;margin-right:0;}
.rd-prose figcaption{font-size:13.5px;color:var(--text-muted);text-align:center;margin-top:10px;}
.rd-prose code{font-family:var(--font-mono);font-size:.88em;background:var(--surface-sunken);padding:2px 6px;border-radius:var(--radius-xs);}
.rd-prose pre{background:var(--navy-900);color:#e2e8f0;padding:18px 20px;border-radius:var(--radius-md);overflow-x:auto;}
.rd-prose pre code{background:none;padding:0;color:inherit;}
.rd-prose table{width:100%;border-collapse:collapse;font-size:15px;}
.rd-prose th,.rd-prose td{border:1px solid var(--border);padding:10px 12px;text-align:left;}
.rd-prose th{background:var(--surface-page);color:var(--text-strong);}
.rd-prose hr{border:0;border-top:1px solid var(--border);margin:40px 0;}
.rd-prose .aligncenter{margin-left:auto;margin-right:auto;}
@media (max-width:760px){
  .rd-article{padding:40px 0 64px;}
  .rd-prose{font-size:16px;}
  .rd-prose h2{font-size:24px;}
}