/* =====================================================================
   SƠ ĐỒ KIẾN TRÚC · KIỂU "3 TẦNG" (v2.34) — đi kèm js/arch-layers.js
   Sơ đồ cũ (#arch) chỉ bị ẩn khi kiểu mới chạy (section có class .kta-on). Hover chỉ ≥1200px có chuột.
   ===================================================================== */
.kta-on #arch { display: none !important; }
/* section cũ đặt overflow: hidden → sticky không chạy; dùng clip theo chiều ngang để vẫn dính được */
.v2-map.kta-on { overflow: visible; overflow-x: clip; }

.kta { --gap: 26rem; --z: 1.1rem; --ai: 2; position: relative; height: calc(100vh + 150vh); margin-top: 2rem; }
.kta.is-open { --z: var(--gap); }
.kta-pin { position: sticky; top: 0; height: 100vh; height: 100svh; display: flex; align-items: center; }
.kta-grid { width: 100%; align-items: center; }

/* ---------- bảng thông tin (desktop: 1 bảng cố định, đổi nội dung theo tầng) ---------- */
.kta-info { grid-column: 1 / 4; }
.kta-cards { display: none; }
.kta-card { padding: 2.4rem 2.4rem 2.6rem; border: 1px solid var(--border); border-radius: 1.4rem; background: #fff; box-shadow: 0 2.4rem 4.8rem -3.6rem rgba(15,27,45,.25); }
.kta-card--live { opacity: 0; transform: translate3d(0, 2rem, 0); transition: opacity .45s var(--ease), transform .6s var(--ease); }
.kta.has-active .kta-card--live { opacity: 1; transform: none; }
.kta-card--live.is-out { opacity: 0 !important; transform: translate3d(0, -1rem, 0) !important; transition-duration: .18s; }
.kta-card--live.is-in-up { animation: ktaInUp .55s var(--ease) both; }
.kta-card--live.is-in-down { animation: ktaInDown .55s var(--ease) both; }
@keyframes ktaInUp { from { opacity: 0; transform: translate3d(0, 1.6rem, 0); } to { opacity: 1; transform: none; } }
@keyframes ktaInDown { from { opacity: 0; transform: translate3d(0, -1.6rem, 0); } to { opacity: 1; transform: none; } }
.kta-card-t { color: var(--primary); }
.kta-group { margin-top: 1.6rem; }
.kta-gname { margin-bottom: .8rem; font-size: 1.2rem; font-weight: 600; letter-spacing: .06em; text-transform: uppercase; color: var(--fg-muted); }
.kta-chips { display: flex; flex-wrap: wrap; gap: .6rem; }
.kta-chip { display: inline-flex; align-items: center; gap: .8rem; padding: .4rem 1.1rem .4rem .4rem; border: 1px solid var(--border); border-radius: .8rem; background: #fff;
  font-size: 1.35rem; font-weight: 500; line-height: 1.3; color: var(--fg); text-align: left; transition: border-color .3s var(--ease), color .3s var(--ease); }
.kta-ico { flex: none; display: grid; place-items: center; width: 2.8rem; height: 2.8rem; border-radius: .6rem; background: var(--light-gray); color: var(--fg); transition: background-color .3s var(--ease), color .3s var(--ease); }
.kta-ico svg { width: 1.6rem; height: 1.6rem; }
.kta-ico--logo { background: #fff; border: 1px solid var(--border); }
.kta-ico--logo img { width: 1.8rem; height: 1.8rem; object-fit: contain; }
@media (min-width: 1200px) and (hover: hover) {
  .kta-chip:hover { border-color: var(--primary); color: var(--primary); }
  .kta-chip:hover .kta-ico { background: #FDEEEE; color: var(--primary); }
}

/* ---------- 3 tầng (giữa) ---------- */
.kta-vis { grid-column: 4 / 10; height: 100vh; display: grid; place-items: center; perspective: 260rem; pointer-events: none; }
.kta-tower { transform: translateY(calc(var(--z) * .85)); transition: transform 1.1s cubic-bezier(.65,0,.25,1); }
.kta-stack { position: relative; width: 32rem; height: 32rem; transform: rotateX(58deg) rotateZ(-45deg); transform-style: preserve-3d; }
.kta-plate, .kta-ring { position: absolute; inset: 0; transform-style: preserve-3d; }
.kta-plate { transform: translate3d(0, 0, calc(var(--i) * var(--z))); transition: transform 1.1s cubic-bezier(.65,0,.25,1); }
.kta-face { position: absolute; inset: 0; background: rgba(255,255,255,.88); border: 1.2px solid var(--neutral-300); transition: background-color .5s var(--ease), border-color .5s var(--ease); }
.kta-face svg { position: absolute; inset: 0; width: 100%; height: 100%; }
.kta-face .l { fill: none; stroke: var(--neutral-300); stroke-width: .7; stroke-linecap: round; stroke-linejoin: round; transition: stroke .5s var(--ease); }
.kta-face .s { fill: #fff; stroke: var(--neutral-400); stroke-width: .8; stroke-linejoin: round; transition: stroke .5s var(--ease), fill .5s var(--ease); }
.kta-face .s.in { fill: var(--neutral-200); stroke: none; }
.kta-face .d { fill: var(--neutral-400); transition: fill .5s var(--ease); }
.kta-gear { transform-box: fill-box; transform-origin: center; }
.kta.is-open .kta-face { pointer-events: auto; cursor: pointer; }
@media (min-width: 1200px) and (hover: hover) { .kta-plate:not(.is-on) .kta-face:hover { border-color: var(--neutral-500); background: #fff; } }
.kta-plate.is-on .kta-face { background: rgba(255,246,246,.94); border-color: rgba(232,38,45,.35); }
.kta-plate.is-on .l { stroke: rgba(232,38,45,.5); }
.kta-plate.is-on .s { stroke: var(--primary); }
.kta-plate.is-on .s.in, .kta-plate.is-on .d { fill: var(--primary); }
.kta-plate.is-on .kta-gear { animation: ktaSpin 10s linear infinite; }
@keyframes ktaSpin { to { transform: rotate(360deg); } }
/* đường viền active: khung vuông riêng, cách mặt tầng 1.7rem, trượt theo trục Z tới tầng active */
.kta-ring { inset: -1.7rem; border: 1.5px solid var(--primary); opacity: 0;
  transform: translate3d(0, 0, calc(var(--ai) * var(--z))); transition: transform .9s cubic-bezier(.65,0,.25,1), opacity .5s var(--ease); }
.kta.has-active .kta-ring { opacity: 1; }
/* đường dọc nối 3 tầng (dựng đứng theo trục Z): góc = nét đứt · dữ liệu = nét liền + hạt chạy 2 chiều */
.kta-post, .kta-rail { position: absolute; width: 1px; height: calc(var(--z) * 2); margin-left: -.5px; transform-origin: 0 0; transform: rotateX(90deg); transition: height 1.1s cubic-bezier(.65,0,.25,1); }
.kta-post { background: repeating-linear-gradient(to bottom, var(--neutral-300) 0 4px, transparent 4px 9px); }
.kta-rail { background: linear-gradient(to bottom, rgba(232,38,45,.08), rgba(232,38,45,.28), rgba(232,38,45,.08)); opacity: 0; transition: opacity .6s var(--ease) .9s, height 1.1s cubic-bezier(.65,0,.25,1); }
.kta.is-open .kta-rail { opacity: 1; }
.kta-dot { position: absolute; width: .7rem; height: .7rem; margin: -.35rem 0 0 -.35rem; border-radius: 50%; background: var(--primary); box-shadow: 0 0 0 .3rem rgba(232,38,45,.15);
  opacity: 0; transform: translate3d(0, 0, 0) rotateZ(45deg) rotateX(-58deg); }
.kta.is-open .kta-dot.is-up { animation: ktaUp 3.4s cubic-bezier(.45,0,.55,1) var(--d) infinite; }
.kta.is-open .kta-dot.is-down { animation: ktaDown 3.4s cubic-bezier(.45,0,.55,1) var(--d) infinite; }
@keyframes ktaUp {
  0% { opacity: 0; transform: translate3d(0, 0, 0) rotateZ(45deg) rotateX(-58deg); }
  12%, 88% { opacity: 1; }
  100% { opacity: 0; transform: translate3d(0, 0, calc(var(--z) * 2)) rotateZ(45deg) rotateX(-58deg); }
}
@keyframes ktaDown {
  0% { opacity: 0; transform: translate3d(0, 0, calc(var(--z) * 2)) rotateZ(45deg) rotateX(-58deg); }
  12%, 88% { opacity: 1; }
  100% { opacity: 0; transform: translate3d(0, 0, 0) rotateZ(45deg) rotateX(-58deg); }
}
@media (prefers-reduced-motion: reduce) { .kta-dot { display: none; } .kta-plate.is-on .kta-gear { animation: none; } }

/* ---------- phân trang phải: tên tầng — kẻ — chấm (bấm được) ---------- */
.kta-legend { grid-column: 10 / -1; justify-self: end; list-style: none; display: flex; flex-direction: column; align-items: flex-end; gap: 24px; }
.kta-legend li { display: flex; justify-content: flex-end; }
.kta-legend button { display: flex; align-items: center; justify-content: flex-end; gap: 8px; padding: 4px 0; font-size: 12px; line-height: 1; font-weight: 500; letter-spacing: .02em; color: var(--neutral-400); cursor: pointer; transition: color .4s var(--ease); }
.kta-leg-line { width: 14px; height: 1px; background: currentColor; opacity: .6; transition: width .45s var(--ease), opacity .4s var(--ease); }
.kta-leg-dot { width: 5px; height: 5px; border-radius: 50%; background: currentColor; opacity: .7; }
.kta-legend button:focus:not(:focus-visible) { outline: none; }
.kta-legend button:focus-visible { outline: 1px solid var(--primary); outline-offset: 4px; }
.kta-legend button.is-on { color: var(--primary); }
.kta-legend button.is-on .kta-leg-line { width: 26px; opacity: 1; }
.kta-legend button.is-on .kta-leg-dot { opacity: 1; }
@media (min-width: 1200px) and (hover: hover) { .kta-legend button:not(.is-on):hover { color: var(--fg); } }

/* ---------- bảng chi tiết phân hệ: desktop panel phải · mobile trượt từ dưới ---------- */
.kta-sheet { position: fixed; inset: 0; z-index: 1200; pointer-events: none; }
.kta-sheet-bg { position: absolute; inset: 0; background: rgba(15,27,45,.35); opacity: 0; transition: opacity .35s var(--ease); }
.kta-sheet-panel { position: absolute; top: 0; right: 0; bottom: 0; width: 48rem; display: flex; flex-direction: column; background: #fff; box-shadow: -2rem 0 6rem -2rem rgba(15,27,45,.3);
  transform: translateX(100%); visibility: hidden; transition: transform .5s var(--ease), visibility 0s .5s; }
.kta-sheet.open { pointer-events: auto; }
.kta-sheet.open .kta-sheet-bg { opacity: 1; }
.kta-sheet.open .kta-sheet-panel { transform: none; visibility: visible; transition: transform .5s var(--ease); }
.kta-sheet-grab { display: none; }
.kta-sheet-top { display: flex; align-items: center; justify-content: space-between; padding: 2.4rem 3.2rem 0; }
.kta-sheet-tier { font-size: 1.2rem; font-weight: 600; letter-spacing: .08em; text-transform: uppercase; color: var(--primary); }
.kta-sheet-x { width: 4rem; height: 4rem; display: grid; place-items: center; color: var(--fg); }
.kta-sheet-x svg { width: 2rem; height: 2rem; }
.kta-sheet-body { flex: 1; overflow: auto; overscroll-behavior: contain; padding: 1.6rem 3.2rem 3.2rem; }
.kta-sheet-head { display: flex; align-items: center; gap: 1.4rem; }
.kta-sheet-head .kta-ico { width: 4.8rem; height: 4.8rem; border-radius: .8rem; background: #FDEEEE; color: var(--primary); }
.kta-sheet-head .kta-ico svg { width: 2.4rem; height: 2.4rem; }
.kta-sheet-head .kta-ico--logo img { width: 3rem; height: 3rem; }
.kta-sheet-head h3 { font-size: 2.6rem; font-weight: 500; line-height: 1.2; }
.kta-sheet-desc { margin-top: 1.6rem; font-size: 1.6rem; line-height: 1.6; color: var(--fg-muted); }
.kta-sheet-cap { margin-top: 2.8rem; font-size: 1.2rem; font-weight: 600; letter-spacing: .06em; text-transform: uppercase; color: var(--fg-muted); }
.kta-sheet-does { margin-top: 1.2rem; list-style: none; display: flex; flex-direction: column; gap: 1rem; }
.kta-sheet-does li { position: relative; padding-left: 2rem; font-size: 1.5rem; line-height: 1.5; }
.kta-sheet-does li::before { content: ''; position: absolute; left: 0; top: .8rem; width: .7rem; height: .7rem; border-radius: 50%; background: var(--primary); }
.kta-sheet-links { margin-top: 1.2rem; display: flex; flex-wrap: wrap; gap: .8rem; }
.kta-sheet-foot { display: flex; gap: 1.2rem; padding: 2rem 3.2rem; border-top: 1px solid var(--border); }
.kta-sheet-foot .btn { flex: 1; justify-content: center; }
.kta-sheet-foot [hidden] { display: none; }

/* ===================== MOBILE / TABLET (< 1200px) ===================== */
@media (max-width: 1199px) {
  .kta-face { pointer-events: none !important; }
  .kta { --gap: 8.4rem; height: auto; margin-top: 3.2rem; }
  .kta-pin { position: static; height: auto; display: block; }
  .kta-grid { display: flex; flex-direction: column; }
  .kta-vis { order: 1; height: 36rem; perspective: 140rem; }
  .kta-stack { width: 15rem; height: 15rem; }
  .kta-ring { inset: -1rem; }
  .kta-dot { width: .6rem; height: .6rem; margin: -.3rem 0 0 -.3rem; }
  .kta-legend { display: none; }   /* tablet + mobile: bỏ phân trang */
  .kta-legend button { font-size: 11px; gap: 6px; }
  .kta-leg-line { width: 10px; } .kta-legend button.is-on .kta-leg-line { width: 18px; }
  /* 3 bảng thông tin vuốt ngang */
  .kta-info, .kta-vis, .kta-legend { min-width: 0; width: 100%; align-self: stretch; }
  .kta-info { order: 3; margin-top: 2.4rem; }
  .kta-card--live { display: none; }
    /* 3 bảng: luôn 1 bảng active ở giữa, mỗi lần vuốt chuyển đúng 1 bảng */
  /* bảng 1 sát lề trái container, bảng cuối bám lề phải; dải vuốt tràn sát mép màn hình */
  .kta-cards { position: relative; display: flex; gap: 1.2rem; overflow-x: auto; scroll-snap-type: x mandatory; overscroll-behavior-x: contain;
    margin-inline: calc(var(--grid-margin) * -1); padding: .4rem 0 1.6rem var(--grid-margin); scroll-padding-inline: var(--grid-margin);
    scrollbar-width: none; -webkit-overflow-scrolling: touch; }
  .kta-cards::after { content: ''; flex: 0 0 calc(var(--grid-margin) - 1.2rem); }   /* khoảng trống cuối (Safari bỏ qua padding phải) */
  .kta-cards::-webkit-scrollbar { display: none; }
  .kta-cards .kta-card { flex: 0 0 90vw; scroll-snap-align: center; scroll-snap-stop: always; padding: 1.8rem 1.8rem 2rem; box-shadow: none; transition: border-color .4s var(--ease); }
  .kta-cards .kta-card:first-child { scroll-snap-align: start; }
  .kta-cards .kta-card:last-child { scroll-snap-align: end; }
  .kta-cards .kta-card { opacity: .55; transition: border-color .4s var(--ease), opacity .4s var(--ease); }
  .kta-cards .kta-card.is-on { border-color: rgba(232,38,45,.45); opacity: 1; }
  .kta-chip { font-size: 1.25rem; }
  .kta-ico { width: 2.4rem; height: 2.4rem; }
  .kta-ico svg { width: 1.4rem; height: 1.4rem; }
  .kta-sheet-panel { top: auto; left: 0; width: auto; max-height: 72vh; border-radius: 2rem 2rem 0 0; transform: translateY(100%); box-shadow: 0 -2rem 6rem -2rem rgba(15,27,45,.35); }
  .kta-sheet-grab { display: block; width: 4.4rem; height: .5rem; border-radius: 1rem; background: var(--neutral-200); margin: 1rem auto 0; }
  .kta-sheet-top { padding: 1.2rem 2rem 0; }
  .kta-sheet-body { padding: 1.2rem 2rem 2rem; }
  .kta-sheet-head h3 { font-size: 2.2rem; }
  .kta-sheet-foot { padding: 1.4rem 2rem calc(1.4rem + env(safe-area-inset-bottom)); }
}
@media (min-width: 768px) and (max-width: 1199px) {
  .kta-cards .kta-card { flex-basis: 60vw; }
  .kta-vis { height: 42rem; } .kta-stack { width: 19rem; height: 19rem; } .kta { --gap: 10.5rem; }
}