/* ============================================================
   site.css — components: home tiles, header, cards, chips, footer
   ============================================================ */

/* ================= HOME — one screen, no scroll ================= */

body.home {
  min-height: 100svh;
  display: grid;
  grid-template-rows: 1fr auto;
}

/* Lock scrolling only when the viewport is tall enough to hold the
   content. Short landscape phones reflow and scroll instead of
   clipping (WCAG 1.4.10 Reflow). */
@media (min-height: 640px) {
  body.home { height: 100svh; overflow: hidden; }
}

.home-main {
  display: grid;
  place-content: center;
  justify-items: center;
  text-align: center;
  padding: clamp(24px, 5vh, 56px) var(--gutter);
}

.monogram {
  width: 52px;
  height: 52px;
  display: grid;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: 15px;
  background: var(--bg-elev);
  font-size: 0.9375rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--text-2);
  margin-bottom: 26px;
}

.home-name    { margin-bottom: 14px; }
.home-role    { color: var(--text-2); font-size: clamp(1rem, 2.2vw, 1.125rem); letter-spacing: -0.014em; }
.home-role b  { color: var(--text); font-weight: 600; }

.home-meta {
  margin-top: 10px;
  display: flex;
  gap: 10px;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
}
.home-meta .dot { width: 3px; height: 3px; border-radius: 50%; background: var(--text-3); flex: none; }

/* Stack rather than wrap, so the separator never orphans on a line. */
@media (max-width: 520px) {
  .home-meta { flex-direction: column; gap: 5px; }
  .home-meta .dot { display: none; }
}

/* ---------------- the four tiles ---------------- */

.tiles {
  margin-top: clamp(32px, 6vh, 56px);
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
  width: min(100%, 860px);
}

@media (max-width: 720px) {
  .tiles { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }
}

.tile {
  --a: var(--text-2);
  position: relative;
  display: grid;
  gap: 10px;
  justify-items: start;
  text-align: left;
  padding: 20px 18px 18px;
  background: var(--bg-elev);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  isolation: isolate;
  transition:
    border-color 260ms var(--ease),
    transform 320ms var(--ease-out),
    background-color 260ms var(--ease);
}

/* the 14% glow — second of the three accent strengths */
.tile::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: radial-gradient(120% 90% at 20% 0%,
              color-mix(in srgb, var(--a) calc(var(--glow) * 100%), transparent),
              transparent 70%);
  opacity: 0;
  transition: opacity 300ms var(--ease);
  z-index: -1;
}

.tile:hover,
.tile:focus-visible {
  border-color: color-mix(in srgb, var(--a) 55%, var(--line));
  transform: translateY(-3px);
}
.tile:hover::before,
.tile:focus-visible::before { opacity: 1; }

.tile:focus-visible {
  outline: 2px solid color-mix(in srgb, var(--a) calc(var(--ring) * 100%), transparent);
  outline-offset: 3px;
}

.tile .icon { color: var(--a); }

.tile-name {
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: -0.014em;
}

.tile-desc {
  font-size: 0.8125rem;
  line-height: 1.45;
  color: var(--text-3);
  letter-spacing: -0.006em;
}

.tile-go {
  margin-top: 2px;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.08em;
  color: var(--a);
  opacity: 0;
  transform: translateX(-4px);
  transition: opacity 260ms var(--ease), transform 260ms var(--ease-out);
}
.tile:hover .tile-go,
.tile:focus-visible .tile-go { opacity: 1; transform: none; }

/* accent assignment — the whole colour mechanism, four lines */
.tile[data-c="blog"]    { --a: var(--c-blog); }
.tile[data-c="exp"]     { --a: var(--c-exp); }
.tile[data-c="conn"]    { --a: var(--c-conn); }
.tile[data-c="contact"] { --a: var(--c-contact); }

/* ================= SUBPAGE CHROME ================= */

/* The web stays alive on subpages but steps back so text leads. */
body:not(.home) #bg { opacity: 0.55; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: color-mix(in srgb, var(--bg) 82%, transparent);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid var(--line-soft);
}

.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  height: 58px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font-weight: 600;
  font-size: 0.9375rem;
  letter-spacing: -0.014em;
}
.brand .mark {
  width: 26px; height: 26px;
  display: grid; place-items: center;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--bg-elev);
  font-size: 0.6875rem;
  color: var(--text-2);
}
.brand:hover .mark { border-color: var(--text-3); }

.site-nav { display: flex; gap: 4px; }

.site-nav a {
  --a: var(--text-2);
  position: relative;
  padding: 7px 12px;
  border-radius: 999px;
  font-size: 0.875rem;
  letter-spacing: -0.008em;
  color: var(--text-2);
  text-decoration: none;
  transition: color 200ms var(--ease), background-color 200ms var(--ease);
}
.site-nav a:hover { color: var(--text); background: var(--bg-elev); }
.site-nav a[aria-current="page"] { color: var(--a); background: color-mix(in srgb, var(--a) 12%, transparent); }
.site-nav a[data-c="blog"]    { --a: var(--c-blog); }
.site-nav a[data-c="exp"]     { --a: var(--c-exp); }
.site-nav a[data-c="conn"]    { --a: var(--c-conn); }
.site-nav a[data-c="contact"] { --a: var(--c-contact); }

@media (max-width: 560px) {
  .site-header .wrap { height: 54px; }
  .site-nav a { padding: 7px 9px; font-size: 0.8125rem; }
  .brand span:last-child { display: none; }
}

/* ---------------- page body ---------------- */

.page {
  padding-block: clamp(40px, 7vh, 72px) clamp(56px, 10vh, 96px);
}

.page-head { max-width: 62ch; }
.page-head .t-label { display: block; margin-bottom: 14px; }
.page-head .t-lede  { margin-top: 16px; }

.section { margin-top: clamp(40px, 6vh, 64px); }

.rule {
  height: 1px;
  border: 0;
  background: var(--line-soft);
  margin-block: clamp(32px, 5vh, 48px);
}

/* ---------------- cards ---------------- */

.grid-2 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 14px;
}

.card {
  --a: var(--text-2);
  position: relative;
  display: block;
  padding: 22px;
  background: var(--bg-elev);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  transition: border-color 240ms var(--ease), transform 280ms var(--ease-out);
}
.card[href]:hover,
.card[href]:focus-visible {
  border-color: color-mix(in srgb, var(--a) 55%, var(--line));
  transform: translateY(-2px);
}
.card[href]:focus-visible {
  outline: 2px solid color-mix(in srgb, var(--a) calc(var(--ring) * 100%), transparent);
  outline-offset: 3px;
}

.card[data-c="blog"]    { --a: var(--c-blog); }
.card[data-c="exp"]     { --a: var(--c-exp); }
.card[data-c="conn"]    { --a: var(--c-conn); }
.card[data-c="contact"] { --a: var(--c-contact); }

.card-head {
  display: flex;
  align-items: center;
  gap: 11px;
  margin-bottom: 12px;
}
.card-head .icon { color: var(--a); flex: none; }
.card-title { font-size: 1rem; font-weight: 600; letter-spacing: -0.014em; }
.card-sub {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-3);
  letter-spacing: -0.01em;
}
.card-note { font-size: 0.875rem; line-height: 1.5; color: var(--text-2); }

.card-foot {
  margin-top: 14px;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.08em;
  color: var(--a);
}

/* ---------------- expertise chips ---------------- */

.ex-group { margin-top: 30px; }
.ex-group:first-of-type { margin-top: 0; }

.ex-head {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 6px;
}
.ex-head h2 { color: var(--text); }
.ex-count {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  color: var(--text-3);
}
.ex-desc { margin-bottom: 16px; max-width: 64ch; }

.chips { display: flex; flex-wrap: wrap; gap: 8px; }

.chip {
  padding: 7px 13px;
  border-radius: 999px;
  border: 1px solid color-mix(in srgb, var(--c-exp) 26%, var(--line));
  background: color-mix(in srgb, var(--c-exp) 8%, transparent);
  font-size: 0.8125rem;
  letter-spacing: -0.008em;
  color: var(--text);
  white-space: nowrap;
}

/* ---------------- pipeline ---------------- */

.pipeline {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 12px;
  counter-reset: step;
}

.step {
  position: relative;
  padding: 16px 16px 18px;
  background: var(--bg-elev);
  border: 1px solid var(--line);
  border-radius: var(--r-sm);
}
.step::before {
  counter-increment: step;
  content: counter(step, decimal-leading-zero);
  display: block;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  color: var(--c-exp);
  margin-bottom: 8px;
}
.step h3 { font-size: 0.9375rem; font-weight: 600; letter-spacing: -0.012em; margin-bottom: 5px; }
.step p  { font-size: 0.8125rem; line-height: 1.45; color: var(--text-3); }

/* ---------------- blog list ---------------- */

.posts { display: grid; gap: 12px; }

.post-row {
  display: grid;
  grid-template-columns: 96px 1fr;
  gap: 20px;
  align-items: start;
  padding: 20px 22px;
  background: var(--bg-elev);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  transition: border-color 240ms var(--ease), transform 280ms var(--ease-out);
}
.post-row:hover,
.post-row:focus-visible {
  border-color: color-mix(in srgb, var(--c-blog) 55%, var(--line));
  transform: translateY(-2px);
}
.post-row:focus-visible {
  outline: 2px solid color-mix(in srgb, var(--c-blog) calc(var(--ring) * 100%), transparent);
  outline-offset: 3px;
}
.post-date {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-3);
  padding-top: 3px;
}
.post-title { font-size: 1.0625rem; font-weight: 600; letter-spacing: -0.016em; margin-bottom: 6px; }
.post-sum   { font-size: 0.875rem; line-height: 1.5; color: var(--text-2); }
.post-tags  { margin-top: 10px; display: flex; gap: 7px; flex-wrap: wrap; }
.post-tag {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  padding: 3px 9px;
  border-radius: 999px;
  border: 1px solid color-mix(in srgb, var(--c-blog) 26%, var(--line));
  color: var(--c-blog);
}

@media (max-width: 560px) {
  .post-row { grid-template-columns: 1fr; gap: 10px; }
  .post-date { padding-top: 0; }
}

.empty {
  padding: 40px 28px;
  text-align: center;
  background: var(--bg-elev);
  border: 1px dashed var(--line);
  border-radius: var(--r-md);
}
.empty .icon { color: var(--c-blog); margin: 0 auto 14px; }
.empty h2 { margin-bottom: 8px; }
.empty p { max-width: 46ch; margin-inline: auto; color: var(--text-2); font-size: 0.9375rem; }

/* ---------------- contact ---------------- */

.contact-list { display: grid; gap: 12px; max-width: 560px; }

.contact-row {
  --a: var(--c-contact);
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 18px 20px;
  background: var(--bg-elev);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  transition: border-color 240ms var(--ease);
}
.contact-row:hover { border-color: color-mix(in srgb, var(--a) 55%, var(--line)); }
.contact-row .icon { color: var(--a); flex: none; }
.contact-row[data-c="conn"] { --a: var(--c-conn); }

.contact-label { font-size: 0.75rem; font-family: var(--font-mono); color: var(--text-3); letter-spacing: 0.06em; text-transform: uppercase; }
.contact-value { font-size: 0.9375rem; font-weight: 500; letter-spacing: -0.012em; word-break: break-word; }

/* ---------------- article (blog post template) ---------------- */

.article { max-width: 68ch; }
.article h2 { margin-top: 36px; margin-bottom: 12px; }
.article h3 { margin-top: 26px; margin-bottom: 8px; }
.article p  { margin-top: 14px; color: var(--text-2); line-height: 1.68; }
.article ul { margin-top: 14px; display: grid; gap: 8px; }
.article li { position: relative; padding-left: 20px; color: var(--text-2); line-height: 1.6; }
.article li::before {
  content: "";
  position: absolute;
  left: 4px; top: 11px;
  width: 5px; height: 5px;
  border-radius: 50%;
  background: var(--c-blog);
}
.article pre {
  margin-top: 18px;
  padding: 18px;
  overflow-x: auto;
  background: var(--bg-elev);
  border: 1px solid var(--line);
  border-radius: var(--r-sm);
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  line-height: 1.6;
  color: var(--text);
}
.article code { font-family: var(--font-mono); font-size: 0.875em; }
.article blockquote {
  margin-top: 18px;
  padding-left: 18px;
  border-left: 2px solid var(--c-blog);
  color: var(--text-2);
  font-style: italic;
}

.post-meta {
  display: flex;
  gap: 10px;
  align-items: center;
  flex-wrap: wrap;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-3);
  margin-top: 14px;
}
.post-meta .dot { width: 3px; height: 3px; border-radius: 50%; background: var(--text-3); }

/* ---------------- footer ---------------- */

.site-footer {
  border-top: 1px solid var(--line-soft);
  padding-block: 20px;
}
.site-footer .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  flex-wrap: wrap;
}
.site-footer p { font-size: 0.75rem; color: var(--text-3); letter-spacing: -0.004em; }

body.home .site-footer { border-top: 0; }

/* ---------------- 404 ---------------- */

.err {
  min-height: 100svh;
  display: grid;
  place-content: center;
  justify-items: center;
  text-align: center;
  padding: var(--gutter);
}
.err .code {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  color: var(--c-contact);
  margin-bottom: 16px;
}
.err p { margin-top: 12px; margin-bottom: 26px; }

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 11px 20px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: var(--bg-elev);
  font-size: 0.9375rem;
  font-weight: 500;
  letter-spacing: -0.012em;
  text-decoration: none !important;
  transition: border-color 200ms var(--ease), background-color 200ms var(--ease);
}
.btn:hover { border-color: var(--text-3); background: var(--bg-elev-2); }

/* ---------------- resume slot ---------------- */

[data-resume] { margin-top: 18px; }
[data-resume] p {
  font-size: 0.8125rem;
  color: var(--text-3);
  font-family: var(--font-mono);
  letter-spacing: -0.004em;
}