/* ==================================================================
   HESLab Website — style.css
   Sistem warna & tipografi MENGIKUTI HESLab Portal:
   - Skala "river" berbasis biru resmi Universitas Pertamina (#0077C0)
   - Masthead gelap river-900, radius kecil 3px, font IBM Plex
   - Logo: assets/img/uper-lambang.png (file yang sama dengan portal)
   ================================================================== */

:root {
  /* --- Palet river (identik dengan heslab-portal) --- */
  --river-900: #003F66;   /* masthead */
  --river-800: #00558A;
  --river-700: #0077C0;   /* PRIMARY — biru resmi UPer */
  --river-600: #008EE6;   /* hover & elemen non-teks */
  --river-500: #1AA8FF;   /* aksen, garis, ikon */
  --river-200: #A8DEFF;   /* pinggir kartu */
  --river-100: #E5F5FF;   /* latar tint pucat */

  --uper-green: #C1D544;  /* hijau daun UPer — aksen institusional */
  --wave-600: #00A5C4;    /* motif ombak/hidrograf, bukan teks */

  --ink-900: #0E1B24;
  --ink-700: #1E3542;
  --ink-500: #4A6472;
  --muted:   #6E848F;
  --paper:   #F7FAFB;
  --surface: #ffffff;
  --line:    #D7E1E4;
  --line-soft: #E7EEF0;

  --radius: 3px;
  --maxw: 1180px;
  --font-display: "IBM Plex Sans Condensed", "Arial Narrow", system-ui, sans-serif;
  --font-body: "IBM Plex Sans", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, Consolas, monospace;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink-700);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.65;
}

.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 20px; }

a { color: var(--river-700); text-decoration: none; }
a:hover { text-decoration: underline; color: var(--river-600); }
a:focus-visible { outline: 2px solid var(--river-500); outline-offset: 2px; }

/* ---------------- Masthead ---------------- */
.site-header { background: var(--river-900); color: #DCE9EE; }
.header-inner {
  display: flex; flex-wrap: wrap; align-items: center;
  justify-content: space-between; gap: 12px; padding: 16px 20px;
}
.brand { display: flex; align-items: center; gap: 12px; color: inherit; }
.brand:hover { text-decoration: none; }
.brand-logo { height: 40px; width: auto; display: block; }
.brand-text { display: flex; flex-direction: column; line-height: 1.15; }
.brand-name {
  font-family: var(--font-display); font-weight: 600;
  font-size: 1.45rem; letter-spacing: 0.02em; color: #fff;
}
.brand-sub {
  font-family: var(--font-mono); font-size: 0.72rem;
  color: #70BCEB; letter-spacing: 0.02em;
}
.site-nav { display: flex; flex-wrap: wrap; align-items: center; gap: 2px; }
.site-nav a {
  color: #A4CFEA; padding: 7px 12px; border-radius: var(--radius);
  font-size: 0.92rem; border-bottom: 2px solid transparent;
}
.site-nav a:hover { color: #fff; text-decoration: none; }
.site-nav a.active { color: #fff; border-bottom-color: var(--river-500); }
.site-nav .portal-link {
  margin-left: 10px; font-family: var(--font-mono); font-size: 0.8rem;
  color: #91CAED; border: 1px solid #08639B; padding: 6px 10px;
}
.site-nav .portal-link:hover { border-color: var(--river-500); color: #fff; }

/* Garis hidrograf — motif air, memakai --wave-600 seperti portal */
.hydrograph { display: block; width: 100%; height: 26px; background: var(--river-900); }

/* ---------------- Struktur konten ---------------- */
main { padding: 36px 20px 56px; min-height: 55vh; }

h1, h2, h3 { font-family: var(--font-display); color: var(--ink-900); line-height: 1.25; }
h1 { font-size: 2rem; margin: 0 0 6px; }
h2 { font-size: 1.4rem; margin: 2.2em 0 0.6em; }

.eyebrow {
  font-family: var(--font-mono); font-size: 0.72rem;
  letter-spacing: 0.12em; text-transform: uppercase;
  color: var(--river-700); margin-bottom: 4px;
}
.lead { color: var(--ink-500); max-width: 66ch; margin-top: 0; }

/* ---------------- Kartu ---------------- */
.card-grid {
  display: grid; gap: 14px; margin-top: 20px;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
}
.card {
  background: var(--surface); border: 1px solid var(--river-200);
  border-radius: var(--radius); padding: 16px 18px;
}
.card h3 { margin: 0 0 6px; font-size: 1.02rem; }
.card .meta { font-family: var(--font-mono); font-size: 0.76rem; color: var(--muted); margin-bottom: 8px; }
.card p { margin: 0; font-size: 0.92rem; }
.card .doclink {
  display: inline-block; margin-top: 10px; font-family: var(--font-mono);
  font-size: 0.78rem; border: 1px solid var(--river-200);
  border-radius: var(--radius); padding: 4px 10px;
}

.badge {
  display: inline-block; font-size: 0.72rem; font-weight: 600;
  font-family: var(--font-mono); padding: 2px 10px;
  border-radius: var(--radius); background: var(--river-100); color: var(--river-800);
}
.badge.green { background: #F3F7DC; color: #5A6614; }

/* ---------------- Grup anggota (collapsible) ---------------- */
details.member-group {
  background: var(--surface); border: 1px solid var(--line);
  border-radius: var(--radius); margin-top: 14px;
}
details.member-group > summary {
  cursor: pointer; list-style: none;
  display: flex; align-items: center; justify-content: space-between;
  padding: 12px 18px; font-family: var(--font-display);
  font-size: 1.05rem; font-weight: 600; color: var(--ink-900);
  border-left: 4px solid var(--river-700);
}
details.member-group > summary::-webkit-details-marker { display: none; }
details.member-group > summary .count {
  font-family: var(--font-mono); font-size: 0.76rem; font-weight: 400;
  color: var(--muted);
}
details.member-group > summary::after {
  content: "▸"; color: var(--river-700); margin-left: 10px;
  transition: transform 0.15s ease;
}
details.member-group[open] > summary::after { transform: rotate(90deg); }
details.member-group .group-body { padding: 4px 18px 18px; }
details.member-group .card-grid { margin-top: 8px; }

/* ---------------- Daftar publikasi ---------------- */
.pub-list { list-style: none; padding: 0; margin: 20px 0 0; }
.pub-list li {
  background: var(--surface); border: 1px solid var(--line);
  border-left: 3px solid var(--river-500);
  border-radius: var(--radius); padding: 13px 18px; margin-bottom: 10px;
}
.pub-year {
  font-family: var(--font-mono); font-weight: 600;
  color: var(--river-700); margin-right: 10px;
}
.pub-title { font-weight: 600; }
.pub-src { color: var(--muted); font-size: 0.88rem; }

/* ---------------- Statistik beranda ---------------- */
.stats { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 24px; }
.stat {
  flex: 1 1 150px; background: var(--surface);
  border: 1px solid var(--river-200); border-top: 3px solid var(--river-700);
  border-radius: var(--radius); padding: 12px 16px;
}
.stat .num { font-family: var(--font-display); font-size: 1.7rem; font-weight: 700; color: var(--river-800); }
.stat .label { font-family: var(--font-mono); font-size: 0.74rem; color: var(--muted); }

/* ---------------- Tabel ---------------- */
table.data { width: 100%; border-collapse: collapse; margin-top: 16px; background: var(--surface); }
table.data th, table.data td { border: 1px solid var(--line); padding: 8px 12px; text-align: left; font-size: 0.9rem; }
table.data th { background: var(--river-100); font-family: var(--font-display); font-weight: 600; color: var(--ink-900); }
.note { font-size: 0.82rem; color: var(--muted); margin-top: 8px; }

/* ---------------- Footer ---------------- */
.site-footer {
  background: var(--river-900); color: #A4CFEA;
  margin-top: 40px; font-size: 0.88rem;
}
.footer-inner {
  display: flex; flex-wrap: wrap; justify-content: space-between;
  gap: 20px; padding: 28px 20px;
}
.footer-title { font-family: var(--font-display); font-weight: 600; color: #fff; margin-bottom: 6px; }
.footer-line { margin-top: 2px; }
.site-footer a { color: #91CAED; }
.footer-meta { text-align: right; font-family: var(--font-mono); font-size: 0.78rem; }

@media (max-width: 640px) {
  .footer-meta { text-align: left; }
  h1 { font-size: 1.6rem; }
}
@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; }
}

/* ---------------- Aksen kartu (garis atas teal, seperti referensi) --------- */
.card { border-top: 3px solid var(--wave-600); }

/* ---------------- Metadata dataset & tombol unduh ---------------- */
.dl-meta {
  font-family: var(--font-mono); font-size: 0.78rem;
  color: var(--river-700); margin: 12px 0 12px; line-height: 1.8;
}
.dl-meta .k { color: var(--ink-500); }
.btn-cta {
  display: inline-block; background: #E8A33D; color: #3A2A08;
  font-weight: 600; font-size: 0.88rem; padding: 8px 16px;
  border-radius: var(--radius); border: 1px solid #C9862B;
}
.btn-cta:hover { background: #F0B355; color: #3A2A08; text-decoration: none; }
.soon {
  display: inline-block; font-family: var(--font-mono);
  font-size: 0.78rem; color: var(--muted);
  border: 1px dashed var(--line); border-radius: var(--radius);
  padding: 6px 12px;
}
.backlink { margin: 0 0 10px; font-family: var(--font-mono); font-size: 0.82rem; }

/* ---------------- Kolaborasi ---------------- */
.card .meta.periode { color: var(--river-700); margin-top: 10px; margin-bottom: 0; }

/* ---------------- Kontak ---------------- */
.contact-grid { grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); }
.map-embed {
  width: 100%; height: 380px; border: 1px solid var(--line);
  border-radius: var(--radius); display: block; margin-top: 8px;
}

/* Publikasi di dalam grup buka-tutup */
details.member-group .pub-list { margin-top: 8px; }

/* ---------------- Blok Sitasi & Pengolahan Data ---------------- */
.sitasi-box {
  background: var(--surface); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 22px 26px; margin-top: 32px;
}
.sitasi-box h2 { margin-top: 0; }
.sitasi-box .lead { font-size: 0.9rem; margin-bottom: 18px; }
.sitasi-item { margin-bottom: 18px; }
.sitasi-item .meta { margin-bottom: 8px; }
.sitasi-teks {
  margin: 0; font-size: 0.92rem; line-height: 1.6;
  color: var(--ink-700); word-break: break-word;
}
.sitasi-box .tool-card { margin-top: 4px; }

/* ---------------- Motto laboratorium (Beranda) ---------------- */
.motto {
  display: flex; flex-wrap: wrap; align-items: baseline; gap: 10px;
  margin: 14px 0 20px; padding: 10px 0 10px 16px;
  border-left: 3px solid var(--wave-600);
  font-family: var(--font-display);
  font-size: 1.25rem; font-weight: 600;
  color: var(--river-800); letter-spacing: 0.01em;
}
.motto-sep { color: var(--wave-600); font-weight: 400; }
@media (max-width: 480px) {
  .motto { font-size: 1.05rem; gap: 8px; }
}

/* ---------------- Navigasi dalam halaman (anchor) ---------------- */
.section-nav {
  display: flex; flex-wrap: wrap; gap: 6px;
  margin: 14px 0 26px; padding-bottom: 12px;
  border-bottom: 1px solid var(--line);
}
.section-nav a {
  font-family: var(--font-mono); font-size: 0.8rem;
  padding: 5px 12px; border: 1px solid var(--river-200);
  border-radius: var(--radius); color: var(--river-700);
}
.section-nav a:hover {
  background: var(--river-100); text-decoration: none;
}

/* Jarak antar-bagian pada halaman gabungan (Tentang, Riset) */
main section + section { margin-top: 44px; }
main section > h2:first-child { margin-top: 0; }

/* Sub-judul di dalam bagian (mis. kelompok mitra) */
h3.sub {
  font-family: var(--font-display); font-size: 1.08rem;
  color: var(--ink-900); margin: 26px 0 10px;
}

/* Visi & misi */
.visi {
  border-left: 3px solid var(--wave-600); padding-left: 16px;
  font-size: 1.02rem; color: var(--ink-700); max-width: 68ch;
}
.misi { max-width: 68ch; padding-left: 20px; }
.misi li { margin-bottom: 8px; }