/* ===========================================================
   Homepage — "Live-Commerce Editorial" redesign (2026-05)
   - Mobile-first, breakpoints 576/768/992/1200
   - Theme-aware: every color via tokens in /css/site-theme.css
   - prefers-reduced-motion respected on all animations
   =========================================================== */

/* ---------- Reveal-on-scroll ---------- */
.reveal { opacity: 0; transform: translateY(14px); transition: opacity .65s cubic-bezier(.2,.7,.2,1), transform .65s cubic-bezier(.2,.7,.2,1); }
.reveal.is-visible { opacity: 1; transform: none; }
.reveal[data-delay="1"] { transition-delay: .06s; }
.reveal[data-delay="2"] { transition-delay: .14s; }
.reveal[data-delay="3"] { transition-delay: .22s; }
.reveal[data-delay="4"] { transition-delay: .30s; }
@media (prefers-reduced-motion: reduce) {
  .reveal, .reveal[data-delay] { opacity: 1; transform: none; transition: none; }
}

/* ---------- Hero ---------- */
.hero-v2 {
  position: relative;
  isolation: isolate;
  padding: 3rem 0 2rem;
  border-bottom: 1px solid var(--color-border);
  overflow: hidden;
}
.hero-v2 .container { position: relative; z-index: 2; }

/* Gradient-mesh backdrop (no images, no JS) */
.hero-mesh {
  position: absolute; inset: 0; z-index: 0; pointer-events: none;
  background:
    radial-gradient(60% 50% at 12% 8%,  color-mix(in srgb, var(--color-accent) 18%, transparent) 0%, transparent 65%),
    radial-gradient(45% 45% at 92% 18%, color-mix(in srgb, var(--color-teal)   16%, transparent) 0%, transparent 70%),
    radial-gradient(55% 60% at 78% 92%, color-mix(in srgb, var(--color-warning) 14%, transparent) 0%, transparent 70%),
    linear-gradient(180deg, var(--color-bg) 0%, var(--color-bg-card) 100%);
}
.hero-mesh::after {
  content: ""; position: absolute; inset: 0;
  background-image: radial-gradient(var(--color-border) .8px, transparent .8px);
  background-size: 26px 26px;
  opacity: .35;
  mask-image: linear-gradient(180deg, black 0, black 70%, transparent 100%);
}

.hero-eyebrow {
  display: inline-flex; align-items: center; gap: .5rem;
  font-family: var(--font-mono); font-size: .72rem; font-weight: 700;
  letter-spacing: .14em; text-transform: uppercase;
  color: var(--color-accent);
  padding: .35rem .75rem;
  border: 1px solid color-mix(in srgb, var(--color-accent) 32%, transparent);
  border-radius: var(--radius-pill);
  background: color-mix(in srgb, var(--color-accent) 8%, transparent);
}
.hero-eyebrow .dot { width: 6px; height: 6px; border-radius: 50%; background: var(--color-accent); animation: pulse 1.8s infinite; }
@keyframes pulse { 0%,100% { opacity: 1; } 50% { opacity: .35; } }
@media (prefers-reduced-motion: reduce) { .hero-eyebrow .dot { animation: none; } }

.hero-v2 h1 {
  font-size: clamp(1.5rem, 2.6vw + .4rem, 2.4rem);
  line-height: 1.08;
  margin: 1rem 0 1rem;
  letter-spacing: -.025em;
}
.hero-grad {
  background: linear-gradient(95deg, var(--color-accent) 0%, var(--color-warning) 60%, var(--color-teal) 100%);
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent; color: transparent;
}
.hero-sub {
  color: var(--color-soft);
  font-size: clamp(.88rem, .3vw + .8rem, .98rem);
  max-width: 38rem;
  margin-bottom: 1.5rem;
}
/* Hero: 4 thẻ "mảng chính" (cột phải) */
.hero-pillars { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: .75rem; }
.hero-pillar {
  position: relative; display: flex; flex-direction: column; gap: .2rem;
  padding: 1rem 1.05rem; border-radius: var(--radius-md);
  background: var(--color-bg-card); border: 1px solid var(--color-border);
  box-shadow: var(--card-glow); color: var(--color-text); text-decoration: none !important;
  transition: transform var(--transition-fast), border-color var(--transition-fast), box-shadow var(--transition-fast);
}
.hero-pillar:hover { transform: translateY(-3px); border-color: var(--accent-color); box-shadow: var(--card-glow-hover); color: var(--color-text); }
.hero-pillar .ico {
  width: 38px; height: 38px; border-radius: 11px; margin-bottom: .45rem;
  display: inline-flex; align-items: center; justify-content: center; font-size: 1.05rem;
  color: var(--accent-color); background: color-mix(in srgb, var(--accent-color) 15%, transparent);
}
.hero-pillar .kicker { font-family: var(--font-mono); font-size: .68rem; letter-spacing: .1em; text-transform: uppercase; color: var(--color-muted); }
.hero-pillar .title  { font-weight: 700; font-size: .98rem; line-height: 1.25; }
.hero-pillar .title .go { font-size: .75rem; color: var(--accent-color); margin-left: .2rem; transition: transform var(--transition-fast); }
.hero-pillar:hover .title .go { transform: translateX(3px); }
.hero-pillar .desc   { font-size: .8rem; line-height: 1.4; color: var(--color-muted); }
@media (max-width: 991.98px) { .hero-pillars { margin-top: 1.75rem; } }
/* Mobile: giữ 2 cột, bỏ mô tả cho gọn — tên thẻ đủ rõ để bấm */
@media (max-width: 575.98px) {
  .hero-pillars { gap: .55rem; }
  .hero-pillar { padding: .8rem .85rem; }
  .hero-pillar .ico { width: 32px; height: 32px; font-size: .9rem; margin-bottom: .3rem; }
  .hero-pillar .title { font-size: .9rem; }
  .hero-pillar .desc { display: none; }
  .hero-cta-row .btn { flex: 1 1 auto; text-align: center; }
}

/* Hero: lối tắt phụ dưới CTA */
.hero-links { display: flex; flex-wrap: wrap; gap: .35rem 1.1rem; margin-top: 1rem; font-size: .86rem; }
.hero-links a { color: var(--color-soft); text-decoration: none; display: inline-flex; align-items: center; gap: .35rem; }
.hero-links a:hover { color: var(--color-accent); }
.hero-links a > i { color: var(--color-muted); }
.hero-links .bd { margin-left: .15rem; }

/* Hero CTAs */
.hero-cta-row { display: flex; flex-wrap: wrap; gap: .55rem; margin-top: 1.25rem; }
.hero-cta-row .btn {
  border-radius: var(--radius-pill); font-weight: 700; padding: .6rem 1.15rem;
  border: 1px solid var(--color-border-strong); background: var(--color-bg-card);
  color: var(--color-text);
  transition: transform var(--transition-fast), background var(--transition-fast), border-color var(--transition-fast), color var(--transition-fast);
}
.hero-cta-row .btn:hover { transform: translateY(-2px); border-color: var(--color-accent); color: var(--color-accent); }
.hero-cta-row .btn-primary-cta {
  background: var(--color-cta); border-color: var(--color-cta); color: #fff;
  box-shadow: 0 10px 24px color-mix(in srgb, var(--color-cta) 32%, transparent);
}
.hero-cta-row .btn-primary-cta:hover { background: var(--color-cta-hover); border-color: var(--color-cta-hover); color: #fff; }

/* ---------- Hero stats (chân hero) ---------- */
.hero-stats {
  display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: .5rem;
  margin: 2.25rem 0 0; padding-top: 1.25rem; border-top: 1px solid var(--color-border);
}
@media (max-width: 767.98px) { .hero-stats { grid-template-columns: repeat(2, minmax(0, 1fr)); margin-top: 1.5rem; } }
.hero-stats dd { margin: 0; }
.stat {
  text-align: center;
  padding: .35rem .5rem;
  display: flex; flex-direction: column-reverse;   /* số trên, nhãn dưới (markup: dt trước dd) */
}
.stat__num {
  font-family: var(--font-mono);
  font-size: clamp(1.3rem, 2vw, 1.85rem);
  font-weight: 700;
  letter-spacing: -.02em;
  color: var(--color-text);
  line-height: 1.05;
}
.stat__num .plus { color: var(--color-accent); margin-left: 2px; }
.stat__label { font-size: .85rem; color: var(--color-muted); margin-top: .3rem; letter-spacing: .02em; }

/* ---------- Section heading ---------- */
.section-head { margin-bottom: .85rem; }
.section-kicker {
  display: inline-block; font-family: var(--font-mono); font-size: .6rem; font-weight: 700;
  letter-spacing: .14em; text-transform: uppercase; color: var(--color-teal);
  margin-bottom: .15rem;
}
.section-head h2 {
  font-size: clamp(.95rem, .6vw + .35rem, 1.1rem);
  letter-spacing: -.012em;
  margin: 0;
  font-weight: 700;
}
.section-head .lead { color: var(--color-muted); margin-top: .1rem; font-size: .8rem; line-height: 1.35; max-width: 38rem; margin-bottom: 0; }

/* ---------- Bento featured grid ---------- */
.bento {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  grid-auto-rows: 1fr;
  gap: 10px;
}
.bento-card {
  position: relative;
  display: flex; flex-direction: column;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: .85rem .9rem .8rem;
  text-decoration: none !important;
  color: var(--color-text) !important;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
  overflow: hidden;
  min-height: 110px;
}
.bento-card::before {
  /* corner glow */
  content: ""; position: absolute; inset: -1px;
  background: radial-gradient(60% 70% at 100% 0%, var(--accent-soft, var(--color-accent-dim)) 0%, transparent 70%);
  opacity: .55; pointer-events: none; transition: opacity var(--transition);
}
.bento-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--card-glow-hover);
  border-color: var(--color-accent);
}
.bento-card:hover::before { opacity: .85; }

.bento-card .ico {
  width: 32px; height: 32px; border-radius: 9px;
  background: var(--accent-soft, var(--color-accent-dim));
  color: var(--accent-color, var(--color-accent));
  display: inline-flex; align-items: center; justify-content: center;
  font-size: .92rem; margin-bottom: .45rem;
  z-index: 1;
}
.bento-card h3 {
  font-size: .92rem; line-height: 1.25;
  margin: 0 0 .2rem; z-index: 1;
}
.bento-card .desc {
  font-size: .76rem; color: var(--color-muted); line-height: 1.4;
  margin: 0; z-index: 1;
}
.bento-card .bento-foot {
  margin-top: auto; padding-top: .45rem;
  display: flex; justify-content: space-between; align-items: center;
  font-size: .7rem; color: var(--color-muted); z-index: 1;
}
.bento-card .bento-foot .go { color: var(--color-accent); font-weight: 700; }

/* Featured sizing: 1 hero + 5 small @ lg+, 2 cols @ md, 1 col @ sm */
.bento-card.size-lg { grid-column: span 3; grid-row: span 2; min-height: 220px; }
.bento-card.size-md { grid-column: span 3; }
.bento-card.size-sm { grid-column: span 2; }
.bento-card.size-lg h3 { font-size: 1.05rem; line-height: 1.2; }
.bento-card.size-lg .desc { font-size: .85rem; }
.bento-card.size-lg .ico { width: 40px; height: 40px; font-size: 1.1rem; border-radius: 11px; }
@media (max-width: 991.98px) {
  .bento { grid-template-columns: repeat(4, 1fr); }
  .bento-card.size-lg { grid-column: span 4; grid-row: auto; min-height: 130px; }
  .bento-card.size-md { grid-column: span 2; }
  .bento-card.size-sm { grid-column: span 2; }
}
@media (max-width: 575.98px) {
  .bento { grid-template-columns: 1fr; }
  .bento-card.size-lg, .bento-card.size-md, .bento-card.size-sm { grid-column: span 1; }
}

/* ---------- Search + filter chips ---------- */
.tools-toolbar {
  display: flex; flex-wrap: wrap; gap: .9rem; align-items: center;
  margin-bottom: 1.5rem;
}
.tools-search {
  flex: 1 1 280px; min-width: 240px;
  position: relative;
}
.tools-search input {
  width: 100%; padding: .75rem 1rem .75rem 2.6rem;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-pill);
  color: var(--color-text); font-size: 15px;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}
.tools-search input:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 4px color-mix(in srgb, var(--color-accent) 18%, transparent);
}
.tools-search input::placeholder { color: var(--color-muted); }
.tools-search .icn {
  position: absolute; left: 1rem; top: 50%; transform: translateY(-50%);
  color: var(--color-muted);
}
.tools-search .clear-btn {
  position: absolute; right: .6rem; top: 50%; transform: translateY(-50%);
  background: none; border: 0; color: var(--color-muted); padding: .4rem; border-radius: 50%;
  display: none;
}
.tools-search.has-value .clear-btn { display: inline-flex; }
.tools-search .clear-btn:hover { color: var(--color-accent); background: var(--color-accent-dim); }

.chip-filters { display: flex; flex-wrap: wrap; gap: .5rem; }
.chip-filter {
  display: inline-flex; align-items: center; gap: .45rem;
  padding: .5rem .95rem;
  background: var(--color-bg-card); color: var(--color-soft);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  font-size: .85rem; font-weight: 600; cursor: pointer;
  transition: all var(--transition-fast);
}
.chip-filter:hover { color: var(--color-accent); border-color: var(--color-accent); }
.chip-filter.is-active {
  background: var(--color-accent); border-color: var(--color-accent); color: #fff;
  box-shadow: 0 6px 14px color-mix(in srgb, var(--color-accent) 30%, transparent);
}
.chip-filter .count {
  display: inline-block; font-family: var(--font-mono); font-size: .7rem;
  padding: 1px 7px; border-radius: var(--radius-pill);
  background: color-mix(in srgb, var(--color-text) 8%, transparent);
  color: var(--color-soft);
}
.chip-filter.is-active .count { background: rgba(255,255,255,.22); color: #fff; }

/* ---------- Tool cards (redesign) ---------- */
/* Cố định 3 CỘT trên desktop (trước đây auto-fill cho 4-5 cột trên màn rộng, thẻ bị bóp
   hẹp và chữ mô tả xuống dòng vụn). Hẹp dần thì 2 cột rồi 1 cột. */
#tools-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}
@media (max-width: 991.98px) { #tools-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 575.98px)  { #tools-grid { grid-template-columns: 1fr; } }
.tool-v2 {
  position: relative;
  display: flex; flex-direction: column;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.1rem 1.15rem 1rem;
  text-decoration: none !important; color: var(--color-text) !important;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
  min-height: 168px;
}
.tool-v2:hover {
  transform: translateY(-4px);
  box-shadow: var(--card-glow-hover);
  border-color: var(--color-accent);
}
.tool-v2 .head { display: flex; align-items: flex-start; gap: .8rem; margin-bottom: .55rem; }
.tool-v2 .ico {
  flex-shrink: 0;
  width: 40px; height: 40px; border-radius: 12px;
  display: inline-flex; align-items: center; justify-content: center;
  background: var(--accent-soft, var(--color-accent-dim));
  color: var(--accent-color, var(--color-accent));
  font-size: 1.05rem;
}
.tool-v2 h3 {
  font-size: .98rem; line-height: 1.3; margin: 0; font-weight: 700;
  display: flex; flex-wrap: wrap; gap: .35rem; align-items: center;
}
.tool-v2 .desc { font-size: .82rem; color: var(--color-muted); line-height: 1.45; margin: 0 0 .65rem; flex: 1; }
.tool-v2 .foot {
  margin-top: auto;
  display: flex; justify-content: space-between; align-items: center; gap: .5rem;
  font-size: .8rem;
}
.tool-v2 .go {
  font-weight: 700; color: var(--color-accent);
  display: inline-flex; align-items: center; gap: .25rem;
  transition: gap var(--transition-fast);
}
.tool-v2:hover .go { gap: .5rem; }

/* Badges */
.bd {
  display: inline-flex; align-items: center; gap: .25rem;
  font-size: .65rem; line-height: 1; font-weight: 800;
  padding: 4px 8px; border-radius: var(--radius-pill);
  letter-spacing: .04em; text-transform: uppercase;
  border: 1px solid transparent;
}
.bd--vip      { background: linear-gradient(95deg, var(--color-accent), var(--color-warning)); color: #fff; }
.bd--new      { background: var(--color-teal-dim); color: var(--color-teal); border-color: color-mix(in srgb, var(--color-teal) 30%, transparent); }
.bd--ai       { background: linear-gradient(95deg, #7c3aed, #ec4899); color: #fff; }
.bd--mu       { background: color-mix(in srgb, var(--color-warning) 16%, transparent); color: var(--color-warning); border-color: color-mix(in srgb, var(--color-warning) 28%, transparent); }
.bd--ru       { background: color-mix(in srgb, var(--color-success) 16%, transparent); color: var(--color-success); border-color: color-mix(in srgb, var(--color-success) 28%, transparent); }
.bd--out      { background: color-mix(in srgb, var(--color-muted) 16%, transparent); color: var(--color-muted); border-color: color-mix(in srgb, var(--color-muted) 25%, transparent); text-decoration: line-through; }
.bd--default  { background: var(--color-surface-2); color: var(--color-soft); border-color: var(--color-border); }

/* Status pill */
.pill {
  display: inline-flex; align-items: center; gap: .3rem;
  font-size: .72rem; font-weight: 700;
  padding: 3px 9px; border-radius: var(--radius-pill);
  border: 1px solid;
}
.pill--ok      { background: color-mix(in srgb, var(--color-success) 14%, transparent); color: var(--color-success); border-color: color-mix(in srgb, var(--color-success) 30%, transparent); }
.pill--wait    { background: color-mix(in srgb, var(--color-warning) 14%, transparent); color: var(--color-warning); border-color: color-mix(in srgb, var(--color-warning) 30%, transparent); }
.pill--lock    { background: color-mix(in srgb, var(--color-accent) 12%, transparent); color: var(--color-accent); border-color: color-mix(in srgb, var(--color-accent) 30%, transparent); }
.pill--guest   { background: var(--color-surface-2); color: var(--color-soft); border-color: var(--color-border); }
.pill .coin    { font-family: var(--font-mono); font-weight: 600; }

/* Empty state for filtered grid */
.tools-empty {
  padding: 3rem 1rem; text-align: center;
  color: var(--color-muted);
  border: 1.5px dashed var(--color-border); border-radius: var(--radius-md);
  background: var(--color-bg-card);
  display: none;
}
.tools-empty.is-on { display: block; }

/* ---------- Community + Account ---------- */
.community-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  height: 100%;
  position: relative;
  overflow: hidden;
  transition: transform var(--transition), box-shadow var(--transition);
}
.community-card::before {
  content: ""; position: absolute; top: -40%; right: -20%;
  width: 280px; height: 280px;
  background: radial-gradient(circle at center, var(--accent-soft, var(--color-accent-dim)) 0%, transparent 65%);
  pointer-events: none; opacity: .55;
}
.community-card:hover { transform: translateY(-3px); box-shadow: var(--card-glow-hover); }
.community-card h4 { display: flex; align-items: center; gap: .5rem; margin-bottom: 1rem; position: relative; }
.community-card a.cm-link {
  display: flex; align-items: center; gap: .65rem;
  padding: .55rem .65rem;
  border-radius: var(--radius-sm);
  color: var(--color-text);
  text-decoration: none;
  transition: background var(--transition-fast), color var(--transition-fast), transform var(--transition-fast);
  position: relative;
}
.community-card a.cm-link i { color: var(--color-accent); width: 18px; text-align: center; }
.community-card a.cm-link:hover {
  background: var(--color-accent-dim); color: var(--color-accent);
  transform: translateX(3px);
}

/* ---------- Resources / sitemap ---------- */
.resources details {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  margin-bottom: .65rem;
  overflow: hidden;
}
.resources details[open] { border-color: var(--color-accent); }
.resources summary {
  cursor: pointer; user-select: none;
  list-style: none;
  padding: .85rem 1.1rem;
  display: flex; align-items: center; justify-content: space-between;
  font-weight: 700; font-size: .98rem;
}
.resources summary::-webkit-details-marker { display: none; }
.resources summary .sm-meta { display: flex; align-items: center; gap: .55rem; color: var(--color-muted); font-weight: 500; font-size: .82rem; }
.resources summary .chev { transition: transform .25s; color: var(--color-muted); }
.resources details[open] summary .chev { transform: rotate(180deg); color: var(--color-accent); }
.resources .res-body { padding: 0 .5rem .5rem; }
.resources .res-item {
  display: flex; align-items: center; justify-content: space-between; gap: 1rem;
  padding: .6rem .65rem;
  border-radius: var(--radius-sm);
  text-decoration: none !important; color: var(--color-text) !important;
  transition: background var(--transition-fast), color var(--transition-fast);
}
.resources .res-item:hover { background: var(--color-accent-dim); color: var(--color-accent) !important; }
.resources .res-item .ico { color: var(--color-accent); width: 22px; flex-shrink: 0; }
.resources .res-item .res-title { flex: 1; min-width: 0; font-size: .9rem; line-height: 1.35; }
.resources .res-item .ext { color: var(--color-muted); font-size: .85rem; flex-shrink: 0; }

/* ---------- Back to top ---------- */
.back-to-top {
  position: fixed; right: 20px; bottom: 80px;
  width: 44px; height: 44px; border-radius: 50%;
  display: none; align-items: center; justify-content: center;
  z-index: 9999; background: var(--color-cta); color: #fff;
  box-shadow: 0 8px 20px color-mix(in srgb, var(--color-cta) 32%, transparent);
}
.back-to-top.is-on { display: inline-flex; }


/* ---------- Nền xen kẽ giữa các section ---------- */
.section-alt { background: var(--color-bg); }

/* ---------- Lưới công cụ: nút "Xem tất cả" khi đang thu gọn ---------- */
.tools-more-wrap { text-align: center; margin-top: 1.25rem; }
.tools-more {
  display: inline-flex; align-items: center; gap: .5rem;
  padding: .55rem 1.4rem; border-radius: var(--radius-pill);
  border: 1px solid var(--color-border-strong); background: var(--color-bg-card);
  color: var(--color-text); font-weight: 700; font-size: .9rem; cursor: pointer;
  transition: border-color var(--transition-fast), color var(--transition-fast);
}
.tools-more:hover { border-color: var(--color-accent); color: var(--color-accent); }
.tools-more[hidden] { display: none; }

/* Mobile: chip danh mục cuộn ngang thay vì xuống dòng */
@media (max-width: 575.98px) {
  .chip-filters { flex-wrap: nowrap; overflow-x: auto; scrollbar-width: none; padding-bottom: .15rem; }
  .chip-filters::-webkit-scrollbar { display: none; }
  .chip-filter { flex-shrink: 0; }
}

/* ---------- Khối showcase có tab (Vừa lên kệ / Vừa hạ giá / Deal) ---------- */
.showcase-tabs { padding-top: 2.5rem; border-bottom: 1px solid var(--color-border); }
.showcase-tablist {
  display: flex; gap: .4rem; overflow-x: auto; scrollbar-width: none;
  border-bottom: 1px solid var(--color-border);
}
.showcase-tablist::-webkit-scrollbar { display: none; }
.showcase-tab {
  flex-shrink: 0; display: inline-flex; align-items: center; gap: .45rem;
  padding: .6rem 1rem; margin-bottom: -1px;
  background: none; border: 0; border-bottom: 2px solid transparent;
  color: var(--color-muted); font-weight: 700; font-size: .92rem; cursor: pointer;
  transition: color var(--transition-fast), border-color var(--transition-fast);
}
.showcase-tab:hover { color: var(--color-text); }
.showcase-tab.is-active { color: var(--color-accent); border-bottom-color: var(--color-accent); }
.showcase-tab:focus-visible { outline: 2px solid var(--color-accent); outline-offset: 2px; border-radius: 6px; }
/* Section con đã có padding riêng; trong tab bớt khoảng đầu cho liền với thanh tab */
.showcase-panel > section { padding-top: 1.25rem !important; }

/* ---------- Tài liệu: 2 cột trên desktop ---------- */
.res-groups { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0 .9rem; align-items: start; }
@media (max-width: 767.98px) { .res-groups { grid-template-columns: 1fr; } }
.resources .res-name { display: flex; align-items: center; gap: .6rem; }