/* PROTOTYPE — inner pages (about / blog / resource) on the landing-A stage. Tokens, nav and buttons come from
   landing/a-base.css + pa-ui.css; only p-* classes live here. Hero and outro are transparent (the bot shows through),
   the body between them is a solid 012 canvas. */

.p-logo { width: 24px; height: 24px; }
.p-root:not(.a-ready) .a-canvas { visibility: hidden; } /* until page-a.js has posed the stage (see the end of page-a.js) */
.p-root.a-ready .a-canvas { animation: p-canvas-in .5s var(--pa-ease); } /* an animation outranks the inline opacity page-a.js writes each frame */
@keyframes p-canvas-in { from { opacity: 0; } }
@media (prefers-reduced-motion: reduce) { .p-root.a-ready .a-canvas { animation: none; } }
.p-root [hidden] { display: none !important; }
.p-wrap { width: min(1120px, calc(100vw - 48px)); margin: 0 auto; }
.p-root h1 { font-size: clamp(44px, 6vw, 88px); line-height: .98; letter-spacing: -.045em; font-weight: 800; margin: 0; color: var(--pa-ink); text-wrap: balance; }
.p-root h2 { font-size: clamp(28px, 3vw, 42px); line-height: 1.08; letter-spacing: -.03em; font-weight: 700; margin: 8px 0 14px; color: var(--pa-ink); text-wrap: balance; }
.p-root h3 { margin: 0; color: var(--pa-ink); font-weight: 600; letter-spacing: -.01em; }
.p-lead { font-size: 17px; line-height: 1.6; color: var(--pa-ink-2); max-width: 52ch; margin: 0; }
.p-lead + .p-lead { margin-top: 12px; }
.p-meta { display: flex; align-items: center; gap: 8px; margin: 0; font: var(--pa-fs-xs) var(--pa-font-mono); color: var(--pa-ink-3); letter-spacing: .02em; }
.p-stage { display: inline-grid; place-items: center; min-width: 22px; height: 22px; padding: 0 6px; border-radius: var(--pa-r-xs); background: var(--pa-accent-tint); color: var(--pa-link); font-weight: 700; }
.p-desc { margin: 0; font-size: var(--pa-fs-md); line-height: 1.5; color: var(--pa-ink-2); display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.p-trinity { display: flex; gap: 8px; margin: 0 0 18px; flex-wrap: wrap; }
.p-trinity span { font: var(--pa-fs-xs) var(--pa-font-mono); letter-spacing: .06em; text-transform: uppercase; color: var(--pa-ink-2); padding: 5px 10px; border-radius: var(--pa-r-pill); border: var(--pa-bw) solid var(--pa-line); background: var(--pa-tint-1); }
.p-trinity span:first-child { color: var(--pa-link); border-color: color-mix(in oklch, var(--pa-link) 40%, transparent); }
.p-ctas { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 24px; }
.p-fine { font: var(--pa-fs-xs) var(--pa-font-mono); color: var(--pa-ink-3); margin: 12px 0 0; }

/* ── hero + outro: transparent bands over the stage ── */
.p-hero, .p-outro { position: relative; z-index: 2; display: flex; align-items: center; }
.p-hero { min-height: 88vh; padding: 120px 0 64px; }
.p-hero-in > * { max-width: 600px; }
.p-hero-in, .p-outro-in { text-shadow: 0 2px 22px color-mix(in srgb, var(--pa-canvas) 90%, transparent); }
.p-hero .p-lead { margin-top: 20px; }
.p-count { margin: 18px 0 0; font: var(--pa-fs-sm) var(--pa-font-mono); color: var(--pa-ink-3); }
.p-count b { color: var(--pa-ink); }
.p-outro { min-height: 92vh; padding: 96px 0; }
.p-outro-in { display: flex; flex-direction: column; align-items: flex-end; text-align: right; }
.p-outro-in > * { max-width: 520px; }
.p-outro-in .p-ctas { justify-content: flex-end; }

/* ── body: solid canvas, sticky filter bar ── */
.p-body { position: relative; z-index: 2; background: var(--pa-canvas); padding: 0 0 96px;
  box-shadow: 0 -40px 60px -20px var(--pa-canvas), 0 40px 60px -20px var(--pa-canvas); }
.p-bar { position: sticky; top: 0; z-index: 12; padding: 76px 0 14px; background: linear-gradient(var(--pa-canvas) 82%, transparent); margin-bottom: 18px; }
.p-bar-in { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
.p-chips { display: inline-flex; gap: 2px; padding: 3px; border-radius: var(--pa-r-m); background: var(--pa-tint-1); border: var(--pa-bw) solid var(--pa-line); flex-wrap: wrap; }
.p-chips button { display: inline-flex; align-items: center; gap: 6px; font: 500 var(--pa-fs) var(--pa-font-ui); color: var(--pa-ink-2); background: none; border: 0; padding: 7px 12px; border-radius: var(--pa-r-s); cursor: pointer; transition: background var(--pa-dur-1) var(--pa-ease), color var(--pa-dur-1); }
.p-chips button:hover { color: var(--pa-ink); background: var(--pa-tint-2); }
.p-chips button b { font: 700 var(--pa-fs) var(--pa-font-mono); color: var(--pa-link); }
.p-chips button i { font: normal var(--pa-fs-xs) var(--pa-font-mono); color: var(--pa-ink-3); }
.p-chips button.on { background: var(--pa-accent); color: var(--pa-on-accent); }
.p-chips button.on b, .p-chips button.on i { color: var(--pa-on-accent); }
.p-search { margin-left: auto; display: flex; align-items: center; gap: 8px; height: 38px; padding: 0 12px; width: min(320px, 100%); border-radius: var(--pa-r-m); border: var(--pa-bw) solid var(--pa-line); background: var(--pa-tint-1); color: var(--pa-ink-3); transition: border-color var(--pa-dur-1); }
.p-search:focus-within { border-color: color-mix(in oklch, var(--pa-link) 55%, transparent); box-shadow: var(--pa-focus); }
.p-search input { flex: 1; min-width: 0; background: none; border: 0; outline: 0; color: var(--pa-ink); font: var(--pa-fs-md) var(--pa-font-ui); }
.p-search input::placeholder { color: var(--pa-ink-3); }
.p-empty { margin: 24px 0; color: var(--pa-ink-3); font-size: var(--pa-fs-md); }

/* ── blog ── */
.p-feature { display: grid; grid-template-columns: 1.15fr 1fr; gap: 28px; align-items: center; padding: 14px; border-radius: var(--pa-r-l); text-decoration: none; margin-bottom: 14px; transition: border-color var(--pa-dur-2) var(--pa-ease); }
.p-feature:hover { border-color: color-mix(in oklch, var(--pa-link) 45%, transparent); }
.p-feature img { width: 100%; aspect-ratio: 16 / 9; object-fit: cover; border-radius: var(--pa-r-m); }
.p-feature h2 { font-size: clamp(24px, 2.4vw, 34px); margin: 12px 0 10px; }
.p-feature .p-desc { -webkit-line-clamp: 3; }
.p-series { display: inline-block; margin-top: 14px; font: var(--pa-fs-xs) var(--pa-font-mono); color: var(--pa-ink-3); padding: 4px 8px; border-radius: var(--pa-r-xs); background: var(--pa-tint-1); }
.p-list { padding: 4px; border-radius: var(--pa-r-l); display: grid; gap: 2px; }
.p-row { display: grid; grid-template-columns: 168px 1fr auto; gap: 18px; align-items: center; padding: 10px; border-radius: var(--pa-r-m); text-decoration: none; transition: background var(--pa-dur-1) var(--pa-ease); }
.p-row:hover { background: var(--pa-tint-2); }
.p-row:hover h3 { color: var(--pa-link); }
.p-row img, .p-thumb { width: 168px; aspect-ratio: 16 / 9; object-fit: cover; border-radius: var(--pa-r-s); background: var(--pa-tint-2); }
.p-row-body { display: grid; gap: 6px; min-width: 0; }
.p-row h3 { font-size: 18px; line-height: 1.3; transition: color var(--pa-dur-1); }
.p-row .p-series { margin-top: 0; white-space: nowrap; }
.p-form { display: flex; gap: 8px; margin-top: 22px; width: min(460px, 100%); }
.p-form input { flex: 1; min-width: 0; height: 42px; padding: 0 14px; border-radius: var(--pa-r-m); border: var(--pa-bw) solid var(--pa-line-strong); background: var(--pa-canvas); color: var(--pa-ink); font: var(--pa-fs-md) var(--pa-font-ui); outline: 0; }
.p-form input:focus { border-color: var(--pa-link); box-shadow: var(--pa-focus); }

/* ── resource ── */
.p-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
.p-card { display: flex; flex-direction: column; gap: 10px; padding: 18px; border-radius: var(--pa-r-l); transition: border-color var(--pa-dur-2) var(--pa-ease), transform var(--pa-dur-2) var(--pa-ease); }
.p-card:hover { border-color: color-mix(in oklch, var(--pa-link) 45%, transparent); transform: translateY(-2px); }
.p-card h3 { font-size: 18px; line-height: 1.3; }
.p-card h3 a { color: inherit; text-decoration: none; display: inline-block; padding: 4px 0; }
.p-card h3 a:hover { color: var(--pa-link); }
.p-card .p-desc { -webkit-line-clamp: 3; font-size: var(--pa-fs); flex: 1; }
.p-type { padding: 3px 8px; border-radius: var(--pa-r-xs); background: var(--pa-accent-tint); color: var(--pa-link); font-weight: 600; text-transform: uppercase; letter-spacing: .05em; }
.p-type--template-vault { background: color-mix(in oklch, var(--pa-st-attention) 16%, transparent); color: var(--pa-st-attention); }
.p-card-foot { display: flex; align-items: center; justify-content: space-between; gap: 10px; padding-top: 12px; border-top: var(--pa-bw) solid var(--pa-line); font: var(--pa-fs-xs) var(--pa-font-mono); color: var(--pa-ink-3); }

/* ── about ── */
.p-me { display: flex; align-items: center; gap: 32px; margin-top: 18px; }
/* founder portrait: the photo on a glass disc, with the spinning teal ring of the feedback avatar */
.p-me-av { position: relative; flex: none; width: 176px; height: 176px; border-radius: 50%; padding: 10px;
  background: radial-gradient(closest-side, color-mix(in oklch, var(--pa-link) 22%, transparent), transparent), var(--pa-float-bg);
  border: 1px solid var(--pa-line); box-shadow: var(--pa-shadow-float), 0 0 60px -12px color-mix(in oklch, var(--pa-link) 55%, transparent); }
.p-me-av img { display: block; width: 100%; height: 100%; border-radius: 50%; object-fit: cover; object-position: center 30%; background: var(--pa-surface); }
.p-me-av::before { content: ""; position: absolute; inset: -5px; border-radius: 50%;
  background: conic-gradient(from 0deg, transparent 0 35%, color-mix(in oklch, var(--pa-link) 40%, transparent) 60%, var(--pa-link) 92%, #bff7f5 100%);
  -webkit-mask: radial-gradient(farthest-side, transparent calc(100% - 3px), #000 calc(100% - 2px)); mask: radial-gradient(farthest-side, transparent calc(100% - 3px), #000 calc(100% - 2px));
  filter: drop-shadow(0 0 8px color-mix(in oklch, var(--pa-link) 70%, transparent)); animation: p-me-spin 6s linear infinite; }
@keyframes p-me-spin { to { transform: rotate(1turn); } }
@media (prefers-reduced-motion: reduce) { .p-me-av::before { animation: none; } }
.p-about { display: grid; gap: 96px; padding-top: 72px; }
.p-about > *, .p-why > * { min-width: 0; }
.p-why { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: center; }
.p-quote { margin: 0; padding: 28px; border-radius: var(--pa-r-l); border-left: 3px solid var(--pa-link) !important; }
.p-quote blockquote { margin: 0; font-size: 21px; line-height: 1.5; color: var(--pa-ink); font-weight: 500; letter-spacing: -.01em; }
.p-quote figcaption { margin-top: 16px; font: var(--pa-fs-sm) var(--pa-font-mono); color: var(--pa-ink-3); }
.p-steps { display: grid; grid-template-columns: repeat(5, 1fr); gap: 6px; margin: 22px 0 10px; }
.p-steps button { display: grid; gap: 6px; text-align: left; padding: 12px 14px; border-radius: var(--pa-r-m); border: var(--pa-bw) solid var(--pa-line); background: var(--pa-tint-1); color: var(--pa-ink-2); font: 500 var(--pa-fs-md) var(--pa-font-ui); cursor: pointer; position: relative; overflow: hidden; transition: border-color var(--pa-dur-2) var(--pa-ease), color var(--pa-dur-1); }
.p-steps button em { font: normal var(--pa-fs-xs) var(--pa-font-mono); color: var(--pa-ink-3); }
.p-steps button:hover { color: var(--pa-ink); border-color: var(--pa-line-strong); }
.p-steps button.on { color: var(--pa-ink); border-color: color-mix(in oklch, var(--pa-link) 55%, transparent); background: var(--pa-accent-tint); }
.p-steps button.on em { color: var(--pa-link); }
.p-steps button.on::after { content: ""; position: absolute; left: 0; right: 0; bottom: 0; height: 2px; background: linear-gradient(90deg, transparent, var(--pa-st-running), transparent); background-size: 200% 100%; animation: pa-flow 1.4s linear infinite; }
.p-step-view { position: relative; padding: 28px 28px 24px; border-radius: var(--pa-r-l); min-height: 220px; }
.p-step h3 { font-size: clamp(22px, 2.2vw, 30px); line-height: 1.2; margin: 14px 0 12px; max-width: 30ch; }
.p-step { animation: p-in var(--pa-dur-3) var(--pa-ease); }
@keyframes p-in { from { opacity: 0; transform: translateY(6px); } }
.p-step-nav { position: absolute; right: 18px; bottom: 18px; display: flex; gap: 6px; }
.p-step-nav button { width: 36px; height: 36px; border-radius: var(--pa-r-s); border: var(--pa-bw) solid var(--pa-line); background: var(--pa-tint-1); color: var(--pa-ink-2); cursor: pointer; font-size: 16px; }
.p-step-nav button:hover { color: var(--pa-ink); background: var(--pa-tint-2); }

/* ── footer ── */
.p-foot { position: relative; z-index: 2; background: var(--pa-canvas); border-top: var(--pa-bw) solid var(--pa-line); padding: 28px 0; }
.p-foot-in { display: flex; align-items: center; gap: 24px; flex-wrap: wrap; }
.p-foot-brand { display: flex; align-items: center; gap: 8px; font-weight: 600; color: var(--pa-ink); }
.p-foot nav { display: flex; gap: 4px; flex-wrap: wrap; }
.p-foot nav a { color: var(--pa-ink-3); text-decoration: none; font-size: var(--pa-fs); padding: 10px 8px; border-radius: var(--pa-r-s); }
.p-foot nav a:hover { color: var(--pa-ink); background: var(--pa-tint-2); }
.p-foot-fine { margin-left: auto; font: var(--pa-fs-xs) var(--pa-font-mono); color: var(--pa-ink-3); }

@media (max-width: 860px) {
  .p-wrap { width: calc(100vw - 32px); }
  .p-hero, .p-outro { min-height: 100svh; align-items: flex-end; padding: 0 0 40px; }
  .p-root h1 { font-size: 44px; }
  .p-lead { font-size: 15.5px; }
  .p-outro-in { align-items: flex-start; text-align: left; }
  .p-outro-in .p-ctas { justify-content: flex-start; }
  .p-hero-in, .p-outro-in { padding: 20px; border-radius: var(--pa-r-l); background: var(--pa-float-bg); border: var(--pa-bw) solid var(--pa-line); box-shadow: var(--pa-shadow-float); text-shadow: none; }
  .p-bar { padding-top: 72px; }
  .p-search { margin-left: 0; width: 100%; }
  .p-chips { overflow-x: auto; flex-wrap: nowrap; max-width: 100%; scrollbar-width: none; }
  .p-me { gap: 18px; }
  .p-me-av { width: 112px; height: 112px; padding: 7px; }
  .p-chips button { white-space: nowrap; }
  .p-feature { grid-template-columns: 1fr; gap: 14px; }
  .p-row { grid-template-columns: 96px 1fr; gap: 12px; align-items: start; }
  .p-row img, .p-thumb { width: 96px; }
  .p-row .p-series, .p-row .p-desc { display: none; }
  .p-row h3 { font-size: 15.5px; }
  .p-grid { grid-template-columns: 1fr; }
  .p-why { grid-template-columns: 1fr; gap: 24px; }
  .p-about { gap: 64px; padding-top: 40px; }
  .p-steps { grid-template-columns: none; grid-auto-flow: column; grid-auto-columns: minmax(132px, 1fr); overflow-x: auto; scrollbar-width: none; }
  .p-step-view { padding: 20px 20px 64px; }
  .p-form { flex-direction: column; }
  .p-foot-fine { margin-left: 0; }
}

/* ── blog "Lọc" panel (series / type / year → month) ── */
.p-filter { position: relative; margin-left: auto; }
.p-filter + .p-search { margin-left: 0; }
.p-filter-btn { display: inline-flex; align-items: center; gap: 7px; height: 38px; padding: 0 12px; border-radius: var(--pa-r-m); border: var(--pa-bw) solid var(--pa-line); background: var(--pa-tint-1); color: var(--pa-ink-2); font: 500 var(--pa-fs) var(--pa-font-ui); cursor: pointer; transition: color var(--pa-dur-1), background var(--pa-dur-1); }
.p-filter-btn:hover, .p-filter-btn[aria-expanded="true"] { color: var(--pa-ink); background: var(--pa-tint-2); }
.p-filter-btn i { font: normal 600 var(--pa-fs-xs) var(--pa-font-mono); min-width: 18px; height: 18px; display: inline-grid; place-items: center; border-radius: var(--pa-r-pill); background: var(--pa-accent); color: var(--pa-on-accent); }
.p-fpanel { position: absolute; right: 0; top: calc(100% + 8px); z-index: 20; width: 300px; padding: 14px; border-radius: var(--pa-r-l); display: grid; gap: 12px; box-shadow: var(--pa-shadow-float); background: var(--pa-float-bg); animation: p-in var(--pa-dur-2) var(--pa-ease); }
.p-fpanel label { display: grid; gap: 6px; font: var(--pa-fs-xs) var(--pa-font-mono); color: var(--pa-ink-3); text-transform: uppercase; letter-spacing: .05em; }
.p-fpanel select { height: 36px; padding: 0 10px; border-radius: var(--pa-r-s); border: var(--pa-bw) solid var(--pa-line-strong); background: var(--pa-canvas); color: var(--pa-ink); font: var(--pa-fs) var(--pa-font-ui); text-transform: none; letter-spacing: 0; }
.p-fpanel select:disabled { opacity: .5; }
.p-fpanel select:focus { outline: 0; border-color: var(--pa-link); box-shadow: var(--pa-focus); }
.p-fpanel-foot { display: flex; justify-content: space-between; gap: 8px; padding-top: 4px; }
.p-bar { background: linear-gradient(var(--pa-canvas) 92%, transparent); }
@media (max-width: 860px) {
  .p-filter { margin-left: 0; }
  .p-fpanel { position: fixed; left: 16px; right: 16px; top: auto; bottom: 16px; width: auto; }
}

/* ── result counter, empty chips, empty state ── */
.p-counter { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; margin: 0 0 14px; font: var(--pa-fs-sm) var(--pa-font-mono); color: var(--pa-ink-3); }
.p-counter b { color: var(--pa-ink); }
.p-counter-go { margin-left: auto; color: var(--pa-link); text-decoration: none; }
.p-counter-go:hover { text-decoration: underline; }
.p-st { padding: 2px 8px; border-radius: var(--pa-r-pill); font-size: var(--pa-fs-xs); }
.p-st--published { color: var(--pa-st-done); background: color-mix(in oklch, var(--pa-st-done) 14%, transparent); }
.p-st--drafting { color: var(--pa-st-attention); background: color-mix(in oklch, var(--pa-st-attention) 14%, transparent); }
.p-st--planned { color: var(--pa-ink-3); background: var(--pa-tint-2); }
.p-chips button.zero:not(.on) { color: var(--pa-ink-3); }
.p-empty { display: flex; align-items: center; gap: 14px; flex-wrap: wrap; padding: 22px; border-radius: var(--pa-r-l); border: var(--pa-bw) dashed var(--pa-line-strong); }
.p-empty p { margin: 0; }