/* ════════════════════════════════════════════════════════════
   kboard.net — main.css
   Light institutional theme — aligned with maven.tw careers palette
   bg #f4f3f1 / ink #181715 / gold #9e7a38
   ════════════════════════════════════════════════════════════ */

:root {
  --bg:         #f4f3f1;
  --bg-subtle:  #eceae6;
  --bg-raised:  #eae8e4;
  --border:     #e0ddd8;
  --border-mid: #ccc9c3;
  --ink:        #181715;
  --mid:        #4a4744;
  --dim:        #6e6a64;
  --gold:       #9e7a38;
  --gold-lt:    #c9a96e;
  --font-sans:  'PingFang TC', 'Microsoft JhengHei', 'Noto Sans TC', Georgia, serif;
  --font-mono:  'Courier New', Courier, monospace;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 17px; }

body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-sans);
  font-weight: 400;
  line-height: 1.85;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

a { color: inherit; text-decoration: none; }


/* ── GOLD CROWN LINE ── */
.top-bar {
  background: var(--gold);
  height: 3px;
}
.top-bar span { display: none; }


/* ── HEADER ── */
header {
  border-bottom: 1px solid var(--border);
  padding: 2.2rem 0 1.8rem;
  background: var(--bg);
}

.header-inner {
  max-width: 860px;
  margin: 0 auto;
  padding: 0 2rem;
}

.site-name {
  font-size: 1.8rem;
  font-weight: 600;
  color: var(--ink);
  letter-spacing: 0.02em;
  line-height: 1.2;
  display: block;
}
.site-name:hover { color: var(--gold); }
.site-name em {
  font-style: normal;
  color: var(--gold);
}

.site-tagline {
  font-size: 1rem;
  color: var(--mid);
  margin-top: 0.45rem;
  letter-spacing: 0.01em;
  font-weight: 400;
}


/* ── NAV ── */
nav {
  border-bottom: 1px solid var(--border);
  background: var(--bg);
}

.nav-inner {
  max-width: 860px;
  margin: 0 auto;
  padding: 0 2rem;
  display: flex;
}

.nav-inner a {
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.10em;
  color: var(--mid);
  padding: 0.9rem 0;
  margin-right: 2rem;
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
  transition: color 0.15s, border-color 0.15s;
  text-transform: uppercase;
}
.nav-inner a:hover,
.nav-inner a.active {
  color: var(--ink);
  border-bottom-color: var(--gold);
}


/* ── MAIN ── */
main {
  max-width: 860px;
  width: 100%;
  margin: 0 auto;
  padding: 3rem 2rem;
  flex: 1;
  box-sizing: border-box;
}

.home-wrap { width: 100%; max-width: 100%; box-sizing: border-box; }
.home-wrap .post-card { width: 100%; }


/* ── SECTION LABEL ── */
.section-label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--mid);
  border-bottom: 1px solid var(--border);
  padding-bottom: 0.6rem;
  margin-bottom: 0;
}


/* ── POST CARD ── */
.post-card {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 2rem;
  padding: 2.5rem 0;
  border-bottom: 1px solid var(--border);
  align-items: start;
}
.post-card:last-child { border-bottom: none; }

.post-cover {
  display: block;
  width: 100%;
  aspect-ratio: 16/10;
  overflow: hidden;
  background: var(--bg-raised);
}
.post-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.3s ease;
}
.post-cover:hover img { transform: scale(1.03); }

.post-cover--placeholder {
  background: var(--bg-raised);
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border);
}
.post-cover--placeholder span {
  font-family: var(--font-mono);
  font-size: 1.2rem;
  color: var(--border-mid);
  letter-spacing: 0.05em;
}

.post-body {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding-top: 0.3rem;
}

.post-card-meta {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 0.7rem;
}

.post-date {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--dim);
  letter-spacing: 0.05em;
}

.post-column {
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--gold);
  padding: 0.1rem 0.5rem;
  border: 1px solid var(--gold-lt);
}

.post-card h2 {
  font-size: 1.2rem;
  font-weight: 500;
  line-height: 1.45;
  margin-bottom: 0.6rem;
  color: var(--ink);
}
.post-card h2 a:hover { color: var(--gold); }

.post-summary {
  font-size: 0.98rem;
  color: var(--ink);
  line-height: 1.85;
  margin-bottom: 0.8rem;
}

.read-more {
  display: inline-block;
  font-size: 0.72rem;
  font-family: var(--font-mono);
  letter-spacing: 0.1em;
  color: var(--gold);
  border-bottom: 1px solid var(--gold-lt);
  align-self: flex-start;
}
.read-more:hover {
  color: var(--ink);
  border-color: var(--border-mid);
}


/* ── SINGLE POST ── */
.post-full { max-width: 720px; }

.post-full-cover {
  width: 100%;
  aspect-ratio: 16/7;
  overflow: hidden;
  margin-bottom: 2.5rem;
}
.post-full-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.post-full-header {
  border-bottom: 1px solid var(--border);
  padding-bottom: 2rem;
  margin-bottom: 2.5rem;
}

.post-full-meta {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1rem;
}

.post-full h1 {
  font-size: 2rem;
  font-weight: 500;
  line-height: 1.35;
  color: var(--ink);
  margin-bottom: 0.8rem;
}

.post-lead {
  font-size: 1.1rem;
  color: var(--ink);
  line-height: 1.85;
}

.post-content {
  font-size: 1.08rem;
  line-height: 1.95;
  color: var(--ink);
}
.post-content h2 {
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--ink);
  margin: 2.5rem 0 0.8rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border);
}
.post-content h3 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--gold);
  margin: 1.8rem 0 0.6rem;
}
.post-content p { margin-bottom: 1.3rem; }
.post-content ul,
.post-content ol { margin: 1rem 0 1.3rem 1.5rem; }
.post-content li { margin-bottom: 0.4rem; }
.post-content strong { color: var(--ink); font-weight: 600; }
.post-content a {
  color: var(--gold);
  border-bottom: 1px solid var(--gold-lt);
}
.post-content a:hover {
  color: var(--ink);
  border-color: var(--border-mid);
}
.post-content blockquote {
  border-left: 3px solid var(--gold);
  padding: 1rem 1.5rem;
  margin: 2rem 0;
  background: var(--bg-raised);
  color: var(--mid);
  font-style: italic;
}
.post-content img {
  max-width: 100%;
  height: auto;
  display: block;
  margin: 1.5rem 0;
}

.back-link {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  margin-top: 3rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--dim);
  letter-spacing: 0.05em;
}
.back-link:hover { color: var(--gold); }


/* ── ABOUT PAGE ── */
.about-page { max-width: 680px; }
.about-page h1 {
  font-size: 1.8rem;
  font-weight: 500;
  margin-bottom: 0.5rem;
}
.about-divider {
  width: 40px;
  height: 2px;
  background: var(--gold);
  margin: 1.5rem 0 2rem;
}
.about-page .lead {
  font-size: 1.1rem;
  color: var(--ink);
  line-height: 1.9;
  margin-bottom: 1.5rem;
}
.about-page p {
  font-size: 1.03rem;
  color: var(--ink);
  line-height: 1.9;
  margin-bottom: 1.2rem;
}
.about-page h2 {
  font-size: 0.68rem;
  font-family: var(--font-mono);
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--dim);
  margin: 2.5rem 0 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--border);
}


/* ── FOOTER ── */
footer {
  border-top: 1px solid var(--border);
  background: var(--bg-subtle);
  padding: 2rem 0;
  margin-top: 4rem;
}
.footer-inner {
  max-width: 860px;
  margin: 0 auto;
  padding: 0 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--mid);
  letter-spacing: 0.05em;
}
.footer-social {
  display: flex;
  gap: 1.2rem;
  align-items: center;
}
.social-link {
  color: var(--dim);
  display: flex;
  align-items: center;
  transition: color 0.15s;
}
.social-link:hover { color: var(--gold); }


/* ── PAGINATION ── */
.pagination {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 0.5rem;
  margin-top: 3rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
}
.pagination a,
.pagination span {
  padding: 0.4rem 0.8rem;
  border: 1px solid var(--border);
  color: var(--mid);
  transition: border-color 0.15s, color 0.15s;
}
.pagination a:hover {
  border-color: var(--gold);
  color: var(--gold);
}
.pagination .active span {
  border-color: var(--ink);
  color: var(--ink);
  font-weight: 600;
}


/* ── RESPONSIVE ── */
@media (max-width: 680px) {
  .header-inner,
  .footer-inner { padding: 0 1.2rem; }
  main { padding: 2rem 1.2rem; }
  .site-tagline {
    font-size: 0.82rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
  }
  nav { overflow: hidden; }
  .nav-inner {
    padding: 0 1.2rem;
    overflow-x: auto;
    overflow-y: hidden;
    -webkit-overflow-scrolling: touch;
    flex-wrap: nowrap;
    scrollbar-width: none;
    gap: 0;
  }
  .nav-inner::-webkit-scrollbar { display: none; }
  .nav-inner a {
    white-space: nowrap;
    flex-shrink: 0;
    font-size: 0.78rem;
    margin-right: 1.2rem;
    padding: 0.8rem 0;
  }
  .post-card {
    grid-template-columns: 1fr;
    gap: 0.8rem;
  }
  .post-cover { aspect-ratio: 16/9; }
  .post-full h1 { font-size: 1.5rem; }
}