/* =========================================================
   Bioinformatics Unit — IMBB-FORTH
   Shared Stylesheet v2 — FORTH Blue palette, modern refresh
   ========================================================= */

@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@300;400;500;600;700;800&family=JetBrains+Mono:wght@400;500;700&family=DM+Serif+Display&display=swap');

:root {
  /* FORTH Blue scale */
  --blue-950:  #051428;
  --blue-900:  #0F2E5A;
  --blue-800:  #1B4A8A;
  --blue-700:  #2260B0;
  --blue-600:  #2C6FBF;
  --blue-200:  #C8D8EE;
  --blue-100:  #E4ECF6;
  --blue-50:   #F0F5FC;
  /* FORTH accent colours */
  --orange:    #D4620A;
  --orange-lt: #FDF2E9;
  --teal:      #0D7C7C;
  --teal-lt:   #E6F4F4;
  /* Neutrals */
  --bg:        #F7F8FA;
  --white:     #FFFFFF;
  --text:      #0F172A;
  --text-muted:#5E6880;
  --border:    #E2E8F0;
  --card-bg:   #FFFFFF;
  /* Tokens */
  --primary:       var(--blue-800);
  --primary-dark:  var(--blue-900);
  --primary-light: var(--blue-100);
  --accent:        var(--orange);
  --accent-light:  var(--orange-lt);
  --radius:        14px;
  --radius-sm:     8px;
  --radius-lg:     20px;
  --shadow-sm:     0 1px 3px rgba(0,0,0,.06), 0 1px 2px rgba(0,0,0,.04);
  --shadow-md:     0 4px 16px rgba(0,0,0,.07);
  --shadow-lg:     0 12px 36px rgba(0,0,0,.10);
  --max-w:         1200px;
  --t:             .18s ease;
}

/* RESET */
*, *::before, *::after { margin:0; padding:0; box-sizing:border-box; }
html { scroll-behavior:smooth; }
body {
  font-family: 'Plus Jakarta Sans', 'Segoe UI', sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  background-image: radial-gradient(rgba(27,74,138,.055) 1px, transparent 1px);
  background-size: 28px 28px;
}
a { color: var(--primary); text-decoration: none; transition: color var(--t); }
a:hover { color: var(--orange); }
img { max-width:100%; display:block; }

/* =========================================================
   NAV
   ========================================================= */
.site-nav {
  background: rgba(255,255,255,.82);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(226,232,240,.8);
  padding: 0 40px;
  position: sticky;
  top: 0;
  z-index: 200;
  box-shadow: 0 1px 12px rgba(15,46,90,.05);
}
.nav-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}
.nav-brand {
  display: flex; align-items: center; gap: 12px;
  text-decoration: none; color: var(--text);
}
.nav-brand-icon {
  width: 38px; height: 38px;
  background: linear-gradient(135deg, var(--blue-900), var(--blue-600));
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 2px 8px rgba(27,74,138,.3);
}
.nav-brand-icon svg { width:20px; height:20px; }
.nav-brand-text {
  font-weight: 800;
  font-size: 16px;
  color: var(--blue-900);
  letter-spacing: -.3px;
  line-height: 1.2;
}
.nav-brand-text span {
  font-weight: 400;
  color: var(--text-muted);
  font-size: 12px;
  display: block;
  letter-spacing: 0;
}
.nav-links {
  display: flex; align-items: center; gap: 4px;
}
.nav-links a {
  font-size: 13.5px; font-weight: 600;
  color: var(--text-muted);
  padding: 7px 13px;
  border-radius: var(--radius-sm);
  transition: all var(--t);
}
.nav-links a:hover  { color: var(--blue-800); background: var(--blue-50); }
.nav-links a.active { color: var(--blue-800); background: var(--blue-100); }
.nav-cta {
  background: var(--blue-800) !important;
  color: #fff !important;
  font-weight: 700 !important;
  padding: 9px 18px !important;
  border-radius: var(--radius-sm) !important;
  box-shadow: 0 2px 8px rgba(27,74,138,.25) !important;
}
.nav-cta:hover  { background: var(--blue-900) !important; box-shadow: 0 4px 16px rgba(27,74,138,.35) !important; }
.nav-cta.active { background: var(--blue-900) !important; }
.nav-toggle { display:none; background:none; border:none; cursor:pointer; padding:8px; }
.nav-toggle svg { width:24px; height:24px; stroke: var(--text); }

/* =========================================================
   PAGE HEADER (sub-pages)
   ========================================================= */
.page-header {
  background: linear-gradient(135deg, var(--blue-950) 0%, var(--blue-900) 40%, var(--blue-700) 100%);
  color: #fff;
  padding: 60px 40px 50px;
  position: relative;
  overflow: hidden;
}
.page-header::after {
  content: '';
  position: absolute; top: -80px; right: -60px;
  width: 350px; height: 350px; border-radius: 50%;
  background: radial-gradient(circle, rgba(212,98,10,.12) 0%, transparent 70%);
}
.page-header-inner {
  max-width: var(--max-w); margin: 0 auto; position: relative; z-index: 1;
}
.page-header .breadcrumb {
  font-size: 12px; opacity: .6; margin-bottom: 10px; letter-spacing: .3px;
}
.page-header .breadcrumb a { color: #fff; opacity: .8; }
.page-header .breadcrumb a:hover { opacity: 1; }
.page-header h1 {
  font-family: 'DM Serif Display', serif;
  font-size: 40px; line-height: 1.2;
}
.page-header p {
  font-size: 16px; opacity: .8; max-width: 520px;
  margin-top: 10px; line-height: 1.7;
}

/* =========================================================
   BUTTONS
   ========================================================= */
.btn {
  display: inline-flex; align-items: center; gap: 6px;
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-size: 14.5px; font-weight: 700;
  padding: 12px 24px;
  border-radius: var(--radius-sm);
  border: none; cursor: pointer;
  transition: all var(--t); text-decoration: none;
}
.btn-primary  { background: var(--orange); color: #fff; }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 6px 20px rgba(212,98,10,.3); color: #fff; }
.btn-blue     { background: var(--blue-800); color: #fff; box-shadow: 0 2px 8px rgba(27,74,138,.25); }
.btn-blue:hover { background: var(--blue-900); transform: translateY(-1px); box-shadow: 0 6px 18px rgba(27,74,138,.35); color: #fff; }
.btn-secondary {
  background: rgba(255,255,255,.1); color: #fff;
  border: 1px solid rgba(255,255,255,.25);
}
.btn-secondary:hover { background: rgba(255,255,255,.2); color: #fff; }
.btn-outline  {
  background: transparent; color: var(--primary);
  border: 2px solid var(--border);
}
.btn-outline:hover { border-color: var(--primary); }

/* =========================================================
   SECTIONS
   ========================================================= */
.section {
  padding: 80px 40px;
  max-width: var(--max-w);
  margin: 0 auto;
}
.section-label {
  font-size: 11px; letter-spacing: 2.5px; text-transform: uppercase;
  color: var(--blue-800); font-weight: 700; margin-bottom: 8px;
}
.section h2 {
  font-family: 'DM Serif Display', serif;
  font-size: 34px; margin-bottom: 12px;
}
.section > .section-desc {
  color: var(--text-muted); font-size: 16px;
  max-width: 560px; margin-bottom: 48px; line-height: 1.7;
}

/* =========================================================
   CARDS
   ========================================================= */
.card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px 28px;
  transition: transform var(--t), box-shadow var(--t);
}
.card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.card-icon {
  width: 48px; height: 48px;
  background: var(--blue-100);
  border-radius: 12px;
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 18px; font-size: 22px;
}
.card h3 { font-size: 17px; font-weight: 700; margin-bottom: 8px; }
.card p  { font-size: 14px; color: var(--text-muted); line-height: 1.7; }

/* =========================================================
   TABS (resources page)
   ========================================================= */
.tab-bar { display:flex; gap:8px; margin-bottom:32px; flex-wrap:wrap; }
.tab-btn {
  background: var(--card-bg); border: 1px solid var(--border);
  border-radius: 100px; padding: 9px 20px;
  font-size: 13px; font-weight: 600; color: var(--text-muted);
  cursor: pointer; font-family: 'Plus Jakarta Sans', sans-serif;
  transition: all var(--t);
}
.tab-btn:hover  { border-color: var(--blue-800); color: var(--blue-800); }
.tab-btn.active { background: var(--blue-800); color: #fff; border-color: var(--blue-800); }
.tab-content    { display:none; }
.tab-content.active-tab { display:grid; }

/* =========================================================
   RESOURCE LINKS (resources.html)
   ========================================================= */
.link-grid { grid-template-columns: repeat(2,1fr); gap: 14px; }
.link-card {
  display: flex; align-items: center; gap: 14px;
  background: var(--card-bg); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 18px 20px;
  text-decoration: none; color: var(--text);
  transition: all var(--t);
}
.link-card:hover { border-color: var(--blue-800); box-shadow: var(--shadow-sm); transform: translateX(4px); color: var(--blue-800); }
.link-icon { width:44px; height:44px; border-radius:10px; display:flex; align-items:center; justify-content:center; font-size:20px; flex-shrink:0; }
.link-icon.enrichment { background: var(--blue-50); }
.link-icon.browser    { background: var(--blue-100); }
.link-icon.platform   { background: var(--teal-lt); }
.link-icon.viz        { background: var(--orange-lt); }
.link-icon.organism   { background: #FFF1F2; }
.link-info h4 { font-size:14px; font-weight:700; margin-bottom:2px; }
.link-info p  { font-size:12px; color: var(--text-muted); }
.link-arrow   { margin-left:auto; opacity:.3; font-size:16px; transition:opacity var(--t); }
.link-card:hover .link-arrow { opacity:1; }

/* =========================================================
   TEAM (team.html)
   ========================================================= */
.team-grid { display:grid; grid-template-columns:repeat(3,1fr); gap:24px; }
.team-card {
  background: var(--card-bg); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 32px 24px;
  text-align: center; transition: all var(--t);
}
.team-card:hover { transform:translateY(-4px); box-shadow:var(--shadow-lg); }
.team-avatar {
  width:90px; height:90px; border-radius:50%;
  background: var(--blue-100); margin: 0 auto 18px;
  display:flex; align-items:center; justify-content:center;
  overflow:hidden;
}
.team-avatar img { width:100%; height:100%; object-fit:cover; border-radius:50%; }
.team-card h3   { font-size:17px; font-weight:700; margin-bottom:4px; }
.team-card .role { font-size:13px; color: var(--blue-800); font-weight:600; margin-bottom:8px; }
.team-card p    { font-size:13px; color: var(--text-muted); line-height:1.6; }
.team-card .contact-link {
  display:inline-flex; align-items:center; gap:4px;
  font-size:13px; font-weight:700; color: var(--blue-800); margin-top:12px;
}
.team-card .contact-link:hover { color: var(--orange); }

/* =========================================================
   WORKFLOW STEPS
   ========================================================= */
.workflow-steps { display:grid; grid-template-columns:repeat(4,1fr); gap:20px; margin-top:48px; }
.step { position:relative; text-align:center; padding:0 10px; }
.step-num {
  width:48px; height:48px; border-radius:50%;
  background: var(--blue-800); color:#fff;
  font-family:'DM Serif Display',serif; font-size:20px;
  display:flex; align-items:center; justify-content:center;
  margin:0 auto 16px; position:relative; z-index:2;
}
.step h4 { font-size:15px; font-weight:700; margin-bottom:6px; }
.step p  { font-size:13px; color:var(--text-muted); line-height:1.6; }
.step:not(:last-child)::after {
  content:''; position:absolute; top:24px;
  left:calc(50% + 30px); width:calc(100% - 60px);
  height:2px; background:var(--border); z-index:1;
}

/* =========================================================
   FORM (request.html)
   ========================================================= */
.form-card { background:var(--card-bg); border:1px solid var(--border); border-radius:var(--radius); padding:40px; max-width:640px; }
.form-group { margin-bottom:20px; }
.form-group label { display:block; font-size:13px; font-weight:700; margin-bottom:6px; color:var(--text); }
.form-group input, .form-group select, .form-group textarea {
  width:100%; padding:11px 14px;
  border:1px solid var(--border); border-radius:var(--radius-sm);
  font-family:'Plus Jakarta Sans',sans-serif; font-size:14px;
  color:var(--text); background:var(--bg);
  transition:border-color var(--t);
}
.form-group input:focus, .form-group select:focus, .form-group textarea:focus {
  outline:none; border-color:var(--blue-800);
  box-shadow:0 0 0 3px var(--blue-100);
}
.form-group textarea { resize:vertical; min-height:100px; }
.form-row { display:grid; grid-template-columns:1fr 1fr; gap:16px; }

/* =========================================================
   CTA STRIP
   ========================================================= */
.cta-strip {
  background: linear-gradient(135deg, var(--blue-950), var(--blue-900) 50%, var(--blue-700));
  color:#fff; padding:60px; text-align:center;
  border-radius:var(--radius-lg);
  max-width:var(--max-w); margin:0 auto 80px;
}
.cta-strip h2 { font-family:'DM Serif Display',serif; font-size:32px; margin-bottom:12px; }
.cta-strip p  { opacity:.8; font-size:16px; margin-bottom:28px; }

/* =========================================================
   FOOTER
   ========================================================= */
.site-footer {
  border-top:1px solid var(--border);
  padding:28px 40px;
  max-width:var(--max-w); margin:0 auto;
  display:flex; justify-content:space-between; align-items:center;
  font-size:13px; color:var(--text-muted);
}
.site-footer a { color:var(--blue-800); }

/* =========================================================
   ANIMATIONS
   ========================================================= */
@keyframes fadeUp { from { opacity:0; transform:translateY(26px); } to { opacity:1; transform:translateY(0); } }
.anim-fade-up { animation: fadeUp .6s ease-out both; }
.anim-delay-1 { animation-delay:.1s; }
.anim-delay-2 { animation-delay:.2s; }
.anim-delay-3 { animation-delay:.3s; }

/* =========================================================
   RESPONSIVE
   ========================================================= */
@media (max-width:900px) {
  .site-nav { padding:0 20px; }
  .nav-links { display:none; }
  .nav-links.open {
    display:flex; flex-direction:column; position:absolute;
    top:68px; left:0; right:0;
    background:#fff; border-bottom:1px solid var(--border);
    padding:16px 20px; gap:4px; box-shadow:var(--shadow-md);
  }
  .nav-toggle { display:block; }
  .page-header { padding:40px 20px 35px; }
  .page-header h1 { font-size:30px; }
  .section { padding:50px 20px; }
  .section h2 { font-size:28px; }
  .team-grid, .services-grid-3 { grid-template-columns:1fr; }
  .link-grid { grid-template-columns:1fr; }
  .workflow-steps { grid-template-columns:1fr 1fr; gap:32px; }
  .step:not(:last-child)::after { display:none; }
  .cta-strip { padding:40px 24px; }
  .form-row { grid-template-columns:1fr; }
  .site-footer { padding:20px; flex-direction:column; gap:8px; text-align:center; }
}
@media (max-width:600px) {
  .workflow-steps { grid-template-columns:1fr; }
}

/* =========================================================
   DARK MODE — variable overrides & component inversions
   Applied when <html data-theme="dark">
   ========================================================= */

[data-theme="dark"] {
  --bg:            #0D1117;
  --white:         #161B22;
  --text:          #E6EDF3;
  --text-muted:    #8B949E;
  --border:        #30363D;
  --card-bg:       #161B22;
  --primary:       #60A5FA;
  --primary-dark:  #93C5FD;
  --primary-light: #1A2E47;
  --accent:        #FB923C;
  --accent-light:  #2D1700;
  --blue-50:       #0D1B2A;
  --blue-100:      #1A2E47;
  --teal-lt:       #0D2020;
  --orange-lt:     #2D1700;
}

/* Body */
[data-theme="dark"] body {
  background-color: #0D1117;
  background-image: radial-gradient(rgba(96,165,250,.09) 1px, transparent 1px);
  color: var(--text);
}

/* Nav */
[data-theme="dark"] .site-nav {
  background: rgba(13,17,23,.90);
  border-bottom-color: #30363D;
}
[data-theme="dark"] .nav-links a { color: #8B949E; }
[data-theme="dark"] .nav-links a:hover,
[data-theme="dark"] .nav-links a.active {
  color: #60A5FA; background: #1A2E47;
}
[data-theme="dark"] .nav-cta            { background: #1D4ED8 !important; }
[data-theme="dark"] .nav-cta:hover      { background: #1E40AF !important; }
[data-theme="dark"] .nav-brand-text     { color: #93C5FD; }
[data-theme="dark"] .nav-brand-text span{ color: #8B949E; }

/* Theme toggle button */
.theme-toggle {
  width: 36px; height: 36px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text-muted);
  display: flex; align-items: center; justify-content: center;
  cursor: pointer; transition: all var(--t);
  font-size: 14px; flex-shrink: 0;
}
.theme-toggle:hover {
  background: var(--primary-light);
  color: var(--primary);
  border-color: var(--primary);
}

/* Page header — already dark gradient, stays the same */

/* Cards */
[data-theme="dark"] .card { background: #161B22; border-color: #30363D; }
[data-theme="dark"] .card h3 { color: #E6EDF3; }
[data-theme="dark"] .card p  { color: #8B949E; }
[data-theme="dark"] .card-icon { background: #1A2E47; }

/* Resource link cards */
[data-theme="dark"] .link-card {
  background: #161B22; border-color: #30363D; color: #C9D1D9;
}
[data-theme="dark"] .link-card:hover { border-color: #60A5FA; color: #60A5FA; }
[data-theme="dark"] .link-icon.enrichment { background: #1A2E47; }
[data-theme="dark"] .link-icon.browser    { background: #1A2E47; }
[data-theme="dark"] .link-icon.platform   { background: #0D2020; }
[data-theme="dark"] .link-icon.viz        { background: #2D1700; }
[data-theme="dark"] .link-icon.organism   { background: #2A0D10; }

/* Tabs */
[data-theme="dark"] .tab-bar .tab-btn {
  background: #161B22; border-color: #30363D; color: #8B949E;
}
[data-theme="dark"] .tab-bar .tab-btn:hover { border-color: #60A5FA; color: #60A5FA; }
[data-theme="dark"] .tab-bar .tab-btn.active {
  background: #2563EB; border-color: #2563EB; color: #fff;
}
[data-theme="dark"] .tab-content.active-tab { background: transparent; }

/* Team */
[data-theme="dark"] .team-card { background: #161B22; border-color: #30363D; }
[data-theme="dark"] .team-card h3 { color: #E6EDF3; }
[data-theme="dark"] .team-card p  { color: #8B949E; }
[data-theme="dark"] .team-card .role { color: #60A5FA; }
[data-theme="dark"] .team-card .contact-link { color: #60A5FA; }
[data-theme="dark"] .team-card .contact-link:hover { color: #FB923C; }
[data-theme="dark"] .team-avatar { background: #1A2E47; }

/* Workflow steps */
[data-theme="dark"] .step-num { background: #2563EB; }
[data-theme="dark"] .step h4  { color: #E6EDF3; }
[data-theme="dark"] .step p   { color: #8B949E; }
[data-theme="dark"] .step::after { background: #30363D; }

/* Forms (request.html & shared) */
[data-theme="dark"] .form-card { background: #161B22; border-color: #30363D; }
[data-theme="dark"] .form-group label { color: #C9D1D9; }
[data-theme="dark"] .form-group input,
[data-theme="dark"] .form-group select,
[data-theme="dark"] .form-group textarea {
  background: #0D1117; border-color: #30363D;
  color: #E6EDF3;
}
[data-theme="dark"] .form-group input:focus,
[data-theme="dark"] .form-group select:focus,
[data-theme="dark"] .form-group textarea:focus {
  border-color: #60A5FA; box-shadow: 0 0 0 3px #1A2E47;
}

/* CTA strip */
[data-theme="dark"] .cta-strip {
  background: linear-gradient(135deg, #051428 0%, #0F2E5A 50%, #1a3a6b 100%);
}

/* Footer */
[data-theme="dark"] .site-footer { border-top-color: #30363D; color: #8B949E; }
[data-theme="dark"] .site-footer a { color: #60A5FA; }

/* ── HPC page ─── */
[data-theme="dark"] .hpc-toc { background: #161B22; border-color: #30363D; }
[data-theme="dark"] .hpc-toc h4 { color: #8B949E; }
[data-theme="dark"] .hpc-toc a { color: #8B949E; }
[data-theme="dark"] .hpc-toc a:hover { color: #60A5FA; background: #1A2E47; }
[data-theme="dark"] .hpc-body h2 { color: #E6EDF3; border-top-color: #30363D; }
[data-theme="dark"] .hpc-body h3 { color: #C9D1D9; }
[data-theme="dark"] .hpc-body h4 { color: #60A5FA; }
[data-theme="dark"] .hpc-body p  { color: #C9D1D9; }
[data-theme="dark"] .hpc-body li { color: #C9D1D9; }
[data-theme="dark"] .hpc-body li strong { color: #60A5FA; }
[data-theme="dark"] code { background: #1A2E47; color: #93C5FD; }
[data-theme="dark"] .callout.info   { background: #1A2E47; border-left-color: #60A5FA; color: #C9D1D9; }
[data-theme="dark"] .callout.warn   { background: #2D1700; border-left-color: #FB923C; color: #C9D1D9; }
[data-theme="dark"] .callout.danger { background: #2A0D10; border-left-color: #F87171; color: #C9D1D9; }
[data-theme="dark"] .partition-table th { background: #1D4ED8; }
[data-theme="dark"] .partition-table td { border-bottom-color: #30363D; color: #C9D1D9; }
[data-theme="dark"] .partition-table tr:nth-child(even) td { background: #1A2233; }
[data-theme="dark"] .spec-card { background: #161B22; border-color: #30363D; }
[data-theme="dark"] .spec-card .spec-label { color: #8B949E; }
[data-theme="dark"] .spec-card .spec-val   { color: #60A5FA; }
[data-theme="dark"] .spec-card .spec-sub   { color: #8B949E; }
[data-theme="dark"] .cheat-item .desc { color: #8B949E; }

/* Services page detail cards */
[data-theme="dark"] .card > div[style*="primary-light"] { background: #1A2E47 !important; }
[data-theme="dark"] .card > div[style*="accent-light"]  { background: #2D1700 !important; }