/* COLLABO F&T — shared styles
   Layout concept: a working-paper (감사조서) feel — ledger-green ink on cool paper,
   columnar-pad ruling as the one bold motif, everything else quiet and left-aligned. */
:root {
  --paper: #f6f8f6;
  --surface: #ffffff;
  --ink: #16231f;
  --ink-soft: #4a5a54;
  --rule: #d5ddd8;
  --rule-strong: #a9b8b0;
  --ledger: #1f5c4a;        /* ledger-green accent */
  --ledger-tint: #e3eee8;
  --tick: #b4392c;          /* auditor's red-pencil tickmark */
  --todo: #fff4c2;
  --todo-line: #c9a227;

  --f-display: "Noto Serif KR", "Nanum Myeongjo", "Apple SD Gothic Neo", serif;
  --f-body: "IBM Plex Sans KR", "Apple SD Gothic Neo", "Malgun Gothic", sans-serif;
  --f-num: "IBM Plex Mono", ui-monospace, "SFMono-Regular", Consolas, monospace;

  --measure: 42rem;
  --wide: 68rem;
  --gutter-l: max(16px, env(safe-area-inset-left, 0px));
  --gutter-r: max(16px, env(safe-area-inset-right, 0px));
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --paper: #111917; --surface: #18221f; --ink: #e6ece9; --ink-soft: #a5b3ad;
    --rule: #2b3934; --rule-strong: #3f524b; --ledger: #7cc4a8; --ledger-tint: #1c3029;
    --tick: #ec7a6c; --todo: #3a3214; --todo-line: #b8952c; color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --paper: #111917; --surface: #18221f; --ink: #e6ece9; --ink-soft: #a5b3ad;
  --rule: #2b3934; --rule-strong: #3f524b; --ledger: #7cc4a8; --ledger-tint: #1c3029;
  --tick: #ec7a6c; --todo: #3a3214; --todo-line: #b8952c; color-scheme: dark;
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--f-body);
  font-size: 1.0625rem;
  line-height: 1.75;
  word-break: keep-all;
  overflow-wrap: anywhere;
}
img { max-width: 100%; height: auto; }
a { color: var(--ledger); text-underline-offset: 3px; }
a:hover { text-decoration-thickness: 2px; }
:focus-visible { outline: 2px solid var(--ledger); outline-offset: 3px; border-radius: 2px; }
h1, h2, h3 { font-family: var(--f-display); line-height: 1.35; text-wrap: balance; color: var(--ink); }
h1 { font-size: clamp(1.9rem, 1.3rem + 2.6vw, 3rem); font-weight: 700; margin: 0 0 1rem; letter-spacing: -0.01em; }
h2 { font-size: clamp(1.35rem, 1.1rem + 1vw, 1.75rem); font-weight: 700; margin: 0 0 1rem; }
h3 { font-size: 1.15rem; font-weight: 600; margin: 0 0 .5rem; }
p { margin: 0 0 1rem; }
.num { font-family: var(--f-num); font-variant-numeric: tabular-nums; }

.wrap { max-width: var(--wide); margin: 0 auto; padding-left: var(--gutter-l); padding-right: var(--gutter-r); }

/* Placeholder that the owner must fill before launch */
.todo { background: var(--todo); outline: 1px dashed var(--todo-line); padding: 0 .3em; border-radius: 2px; }

/* Header */
.site-header { border-bottom: 1px solid var(--rule); background: var(--paper); }
.site-header .wrap { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: .75rem 2rem; padding-block: 1.1rem; }
.brand { display: inline-flex; align-items: baseline; gap: .45rem; text-decoration: none; color: var(--ink); }
.brand b { font-family: var(--f-display); font-size: 1.3rem; font-weight: 700; letter-spacing: .06em; }
.brand span { font-family: var(--f-num); font-size: .8rem; color: var(--ledger); border: 1px solid var(--ledger); padding: 0 .35rem; border-radius: 3px; }
.nav { display: flex; flex-wrap: wrap; gap: .25rem 1.4rem; font-size: .98rem; }
.nav a { color: var(--ink-soft); text-decoration: none; padding: .2rem 0; border-bottom: 2px solid transparent; }
.nav a:hover, .nav a[aria-current="page"] { color: var(--ink); border-bottom-color: var(--ledger); }

/* Hero */
.hero .wrap { display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr); gap: 3rem; align-items: center; padding-block: 4rem 3.5rem; }
.hero .lead { font-size: 1.15rem; color: var(--ink-soft); max-width: 34rem; }
.actions { display: flex; flex-wrap: wrap; gap: .75rem; margin-top: 1.75rem; }
.btn { display: inline-block; padding: .7rem 1.2rem; border-radius: 4px; font-weight: 600; text-decoration: none; font-size: .98rem; border: 1px solid var(--ledger); }
.btn-primary { background: var(--ledger); color: var(--paper); }
.btn-primary:hover { filter: brightness(1.08); }
.btn-ghost { color: var(--ledger); background: transparent; }
.btn-ghost:hover { background: var(--ledger-tint); }

/* Working paper — the one bold element: columnar-pad ruling with tickmarks */
.wp {
  background: var(--surface);
  border: 1px solid var(--rule-strong);
  border-radius: 6px;
  padding: 0 1.25rem 1rem;
  font-size: .95rem;
  box-shadow: 0 1px 0 var(--rule-strong), 0 14px 30px -22px rgba(22, 35, 31, .45);
}
.wp-head { display: flex; justify-content: space-between; gap: 1rem; align-items: baseline; padding: .7rem 0 .55rem; border-bottom: 2px double var(--rule-strong); font-size: .82rem; color: var(--ink-soft); }
.wp-head strong { font-family: var(--f-display); font-size: 1rem; color: var(--ink); }
.wp ol { list-style: none; margin: 0; padding: 0; }
.wp li { display: grid; grid-template-columns: 3.4rem minmax(0, 1fr) 2.2rem; align-items: stretch; border-bottom: 1px solid var(--rule); line-height: 1.45; }
.wp li > span { padding: .6rem .6rem; }
.wp li .ref { font-family: var(--f-num); font-size: .78rem; color: var(--ink-soft); padding-left: 0; padding-top: .8rem; border-right: 1px solid var(--rule); }
.wp li .tm { border-left: 1px solid var(--rule); padding-right: 0; }
.wp li b { font-weight: 600; }
.wp li small { display: block; color: var(--ink-soft); font-size: .85rem; }
.wp .tm { color: var(--tick); font-family: var(--f-display); font-weight: 700; font-size: 1.05rem; text-align: center; }
.wp-foot { display: flex; flex-wrap: wrap; justify-content: space-between; gap: .5rem; border-top: 1px solid var(--rule-strong); margin-top: .4rem; padding-top: .55rem; font-size: .8rem; color: var(--ink-soft); }
.wp-foot .tm { color: var(--tick); font-weight: 700; }

/* Sections */
.section { padding-block: 3.5rem; border-top: 1px solid var(--rule); }
.section-head { display: flex; flex-wrap: wrap; align-items: baseline; justify-content: space-between; gap: .5rem 1.5rem; margin-bottom: 1.5rem; }
.section-head h2 { margin: 0; }
.section-head p { margin: 0; color: var(--ink-soft); }

/* Insight list: ledger rows, not cards */
.post-list { list-style: none; margin: 0; padding: 0; border-top: 2px solid var(--ink); }
.post-list li { display: grid; grid-template-columns: 7.5rem minmax(0, 1fr); gap: .25rem 1.5rem; padding: 1.15rem 0; border-bottom: 1px solid var(--rule); }
.post-meta { font-size: .85rem; color: var(--ink-soft); display: flex; flex-direction: column; gap: .15rem; }
.post-meta .num { font-size: .82rem; }
.cat { color: var(--ledger); font-weight: 600; }
.post-list h3 { margin: 0 0 .3rem; font-size: 1.12rem; }
.post-list h3 a { color: var(--ink); text-decoration: none; }
.post-list h3 a:hover { color: var(--ledger); text-decoration: underline; }
.post-list p { margin: 0; color: var(--ink-soft); font-size: .97rem; }
.badge { display: inline-block; font-size: .75rem; font-weight: 600; padding: 0 .4rem; border-radius: 3px; background: var(--todo); outline: 1px dashed var(--todo-line); color: var(--ink); margin-left: .35rem; vertical-align: .15em; }
.empty { padding: 1.5rem 0; color: var(--ink-soft); }

.filters { display: flex; flex-wrap: wrap; gap: .5rem; margin-bottom: 1.25rem; }
.filters button { font: inherit; font-size: .9rem; padding: .3rem .85rem; border-radius: 999px; border: 1px solid var(--rule-strong); background: var(--surface); color: var(--ink-soft); cursor: pointer; }
.filters button[aria-pressed="true"] { background: var(--ledger); border-color: var(--ledger); color: var(--paper); }

/* Practice areas: account-ledger table */
.areas { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0 3rem; }
.area { padding: 1.25rem 0; border-top: 1px solid var(--rule); }
.area h3 { display: flex; align-items: baseline; gap: .6rem; }
.area h3 .code { font-family: var(--f-num); font-size: .78rem; color: var(--ledger); font-weight: 500; }
.area ul { margin: .25rem 0 0; padding-left: 1.1rem; color: var(--ink-soft); font-size: .97rem; }
.area li + li { margin-top: .15rem; }

/* Profile strip */
.profile { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.4fr); gap: 2.5rem; align-items: start; }
.facts { margin: 0; display: grid; grid-template-columns: max-content minmax(0, 1fr); gap: .45rem 1.25rem; font-size: .97rem; }
.facts dt { color: var(--ink-soft); }
.facts dd { margin: 0; }

/* Article */
.article { max-width: var(--measure); margin: 0 auto; padding-block: 3rem 4rem; }
.crumbs { font-size: .88rem; color: var(--ink-soft); margin-bottom: 1.25rem; }
.crumbs a { color: var(--ink-soft); }
.article-meta { display: flex; flex-wrap: wrap; gap: .25rem 1rem; font-size: .9rem; color: var(--ink-soft); margin-bottom: 2rem; }
.summary { background: var(--ledger-tint); border-left: 3px solid var(--ledger); padding: 1rem 1.25rem; border-radius: 0 4px 4px 0; margin: 0 0 2.25rem; }
.summary strong { display: block; font-family: var(--f-display); margin-bottom: .35rem; }
.summary p:last-child { margin: 0; }
.article h2 { margin-top: 2.75rem; padding-bottom: .4rem; border-bottom: 1px solid var(--rule); }
.article h3 { margin-top: 1.75rem; }
.article ul, .article ol { padding-left: 1.25rem; }
.article li + li { margin-top: .3rem; }
.table-scroll { overflow-x: auto; margin: 1.25rem 0 1.5rem; }
.article table { width: 100%; border-collapse: collapse; font-size: .95rem; min-width: 28rem; }
.article th, .article td { padding: .55rem .75rem; border-bottom: 1px solid var(--rule); text-align: left; vertical-align: top; }
.article thead th { border-bottom: 2px solid var(--ink); font-weight: 600; }
.article td.r, .article th.r { text-align: right; font-family: var(--f-num); font-variant-numeric: tabular-nums; }
.note { border: 1px solid var(--rule-strong); border-radius: 4px; padding: .9rem 1.1rem; background: var(--surface); margin: 1.5rem 0; font-size: .97rem; }
.note b { color: var(--tick); }
.sources { margin-top: 3rem; padding-top: 1rem; border-top: 2px solid var(--ink); font-size: .92rem; }
.sources h2 { font-size: 1.1rem; border: 0; margin-top: 0; padding: 0; }
.sources ol { color: var(--ink-soft); }
.byline { margin-top: 2.5rem; font-size: .9rem; color: var(--ink-soft); border-top: 1px solid var(--rule); padding-top: 1rem; }

/* Pages */
.page { max-width: var(--measure); margin: 0 auto; padding-block: 3rem 4rem; }
.page .lead { font-size: 1.12rem; color: var(--ink-soft); }
.contact-list { margin: 1.5rem 0; display: grid; grid-template-columns: max-content minmax(0, 1fr); gap: .75rem 1.5rem; }
.contact-list dt { color: var(--ink-soft); }
.contact-list dd { margin: 0; font-weight: 500; }

/* Footer */
.site-footer { border-top: 2px solid var(--ink); margin-top: 1rem; font-size: .88rem; color: var(--ink-soft); }
.site-footer .wrap { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 1rem 2rem; padding-block: 1.75rem 2.5rem; }
.site-footer p { margin: 0; }
.site-footer a { color: var(--ink-soft); }

@media (max-width: 760px) {
  .hero .wrap { grid-template-columns: minmax(0, 1fr); gap: 2.25rem; padding-block: 2.5rem; }
  .areas, .profile { grid-template-columns: minmax(0, 1fr); }
  .post-list li { grid-template-columns: minmax(0, 1fr); }
  .post-meta { flex-direction: row; gap: .75rem; }
}
@media (prefers-reduced-motion: reduce) { * { transition: none !important; animation: none !important; } }

/* Imported post bodies */
.article-body section + section { margin-top: .5rem; }
.article-body h2 { margin-top: 2.75rem; padding-bottom: .4rem; border-bottom: 1px solid var(--rule); }
.article-body figure { margin: 1.75rem 0; }
.article-body figure img { display: block; width: 100%; height: auto; border-radius: 4px; border: 1px solid var(--rule); background: var(--surface); }
.article-body figcaption { font-size: .88rem; color: var(--ink-soft); margin-top: .5rem; }
.article-body blockquote { margin: 1.5rem 0; padding: .9rem 1.1rem; border-left: 3px solid var(--rule-strong); background: var(--surface); color: var(--ink-soft); }
.article-body blockquote p:last-child { margin-bottom: 0; }
.article-body a { overflow-wrap: anywhere; }
.article .summary p { margin: 0; }