:root {
  --bg: #ffffff;
  --fg: #1f2937;
  --muted: #6b7280;
  --primary: #20455a;
  --primary-600: #1b3a4c;
  --action: #9dff20; /* cool green to harmonize with link */
  --action-600: #7acc12; /* darker variant of #9dff20 for hover */
  --link: #20455a;
  --link-600: #1b3a4c;
  --border-strong: #cbd5e1; /* stronger divider for emphasis lines */
  --divider: #edf2f7; /* subtle hairline dividers */
  --surface-alt: #f7fafc; /* alternate surface for section bands */
  --focus: #20455a66; /* semi-transparent focus outline */
  --danger: #dc2626; /* red for destructive actions */
  --danger-600: #b91c1c; /* darker red for hover */
  --card: #f9fafb;
  --border: #e5e7eb;
}
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
html.has-sidebar { scroll-behavior: smooth; }
body { background: var(--bg); color: var(--fg); font: 16px/1.6 system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, sans-serif; }
a { color: var(--fg); text-decoration: none; }
.container { width: min(1100px, 92%); margin: 0 auto; }
.row { display: flex; gap: 1rem; }
.between { justify-content: space-between; }
.center { align-items: center; }
.site-header { border-bottom: 1px solid var(--divider); position: sticky; top: 0; backdrop-filter: blur(6px); background: color-mix(in srgb, var(--bg) 85%, transparent); z-index: 10; }
.brand { font-weight: 700; letter-spacing: .2px; padding: .9rem 0; }
.brand img { display: block; height: 28px; width: auto; }
.nav-toggle { display: none; background: transparent; color: var(--fg); font-size: 1.25rem; border: 0; }
.nav ul { list-style: none; margin: 0; padding: 0; display: flex; gap: 1rem; align-items: center; }
.nav a { display: inline-block; padding: .9rem .4rem; color: var(--muted); }
.nav a:not(.btn) { border-bottom: 2px solid transparent; }
.nav a:not(.btn).active, .nav a:not(.btn):hover { color: var(--fg); border-color: var(--link); }
/* Buttons in nav keep their full border from `.btn` */
.nav a.btn { padding: .7rem .9rem; line-height: 1.2; display: inline-flex; align-items: center; vertical-align: middle; }

@media (max-width: 820px) {
  .nav-toggle { display: inline-block; }
  .nav { position: absolute; right: 4%; top: 56px; background: var(--bg); border: 1px solid var(--border); border-radius: .5rem; box-shadow: 0 8px 24px rgba(0,0,0,.08); display: none; }
  .nav[data-open="true"] { display: block; }
  .nav ul { flex-direction: column; gap: .25rem; padding: .5rem 0; }
  .nav a { padding: .5rem 1rem; line-height: 1.1; display: block; min-width: 200px; }
  /* Fallback spacing for Safari where flex gap may not apply */
  .nav ul > li + li { margin-top: 0; }
  /* Ensure action buttons have modest breathing room in mobile menu */
  .nav a.btn { margin: .25rem 1rem; }
}

.main { padding-bottom: 3rem; }
.hero { padding: 4.5rem 0 3rem; background: linear-gradient(180deg, #f3f4f6 0, transparent 100%); border-bottom: 1px solid var(--border); }
.lead { color: var(--muted); max-width: 60ch; }
.eyebrow { color: var(--muted); text-transform: uppercase; letter-spacing: .12em; font-size: .8rem; margin: 0 0 .5rem; }
.cta-row { margin-top: 1.25rem; display: flex; gap: .75rem; }
/* Slightly more space between login CTA buttons */
.login-page .cta-row { gap: 1rem; }

.btn { padding: .7rem 1rem; border-radius: .2rem; border: 1px solid var(--border); }
.btn.primary { background: var(--primary); border-color: var(--primary); color: var(--bg); }
.btn.primary:hover { background: var(--primary-600); border-color: var(--primary-600); }
.btn.action { background: var(--action); border-color: var(--action); color: var(--fg); }
.btn.action:hover { background: var(--action-600); border-color: var(--action-600); }
.btn.secondary { background: var(--card); border-color: var(--border); color: var(--fg); }
.btn.secondary:hover { border-color: var(--fg); }
.btn.link { background: var(--link); border-color: var(--link); color: white; }
.btn.link:hover { background: var(--link-600); border-color: var(--link-600); }
.btn.ghost:hover { border-color: var(--primary); }

/* Optional destructive */
.btn.danger { background: var(--danger); border-color: var(--danger); color: #fff; }
.btn.danger:hover { background: var(--danger-600); border-color: var(--danger-600); }

/* Modifiers */
.btn.sm { padding: .5rem .75rem; font-size: .9rem; }
.btn.lg { padding: .9rem 1.25rem; font-size: 1.05rem; }
.btn.block { display: inline-flex; width: 100%; justify-content: center; }
.btn.is-loading, .btn[disabled] { opacity: .7; pointer-events: none; }
.section { padding: 2.5rem 0; }
.section.full { margin-left: calc(50% - 50vw); margin-right: calc(50% - 50vw); }
.section.dark { background: rgb(32, 69, 90); color: #ffffff; }
.section.dark .page-title,
.section.dark h1, .section.dark h2, .section.dark h3, .section.dark h4, .section.dark h5, .section.dark h6,
.section.dark p, .section.dark ul, .section.dark li { color: #ffffff; }
.section.dark .lead, .section.dark .intro, .section.dark .eyebrow { color: #e5eef3; }
.section.dark .card { background: rgba(255,255,255,0.06); border-color: rgba(255,255,255,0.25); }
.section.dark .screenshot { border-color: rgba(255,255,255,0.35); }
.section.dark .btn.ghost { color: #ffffff; border-color: rgba(255,255,255,0.6); }
.section.dark .btn.ghost:hover { border-color: #ffffff; }
.grid { display: grid; gap: 2rem; }
.grid.two { grid-template-columns: repeat(2, 1fr); }
.grid.two.one-two { grid-template-columns: 1fr 2fr; }
.grid.three { grid-template-columns: repeat(3, 1fr); }
 .grid.four { grid-template-columns: repeat(4, 1fr); }
@media (max-width: 900px) { .grid.three { grid-template-columns: 1fr; } }
@media (max-width: 900px) { .grid.two, .grid.four { grid-template-columns: 1fr; } }
@media (max-width: 900px) { .grid.two.one-two { grid-template-columns: 1fr; } }
.card { background: var(--card); border: 1px solid var(--border); border-radius: .75rem; padding: 1rem 1.25rem; }
.card.feature .icon { width: 36px; height: 36px; display: inline-grid; place-items: center; background: #eaf2ff; border: 1px solid #dbeafe; border-radius: .5rem; color: var(--primary); margin-bottom: .5rem; }
.section.muted { background: var(--surface-alt); border-top: 1px solid var(--divider); border-bottom: 1px solid var(--divider); }
.page-title { margin-bottom: .25rem; }
.intro { color: var(--muted); margin-top: 0; }
.content { margin-top: 1rem; }
.content p { color: var(--fg); }
.content h2, .content h3 { margin-top: 1.25rem; }
.layout-sidebar { display: grid; grid-template-columns: 260px 1fr; gap: 2rem; }
.sidebar { position: sticky; top: 80px; align-self: start; max-height: calc(100vh - 80px); overflow: auto; }
/* Prevent full-bleed sections from overlapping the sidebar within the two-column layout */
.layout-sidebar .content-area .section.full { margin-left: 0; margin-right: 0; }
/* Bottom-align CTA rows inside training section columns */
.layout-sidebar .content-area .grid.two > div { display: flex; flex-direction: column; justify-content: flex-start; }
.layout-sidebar .content-area .grid.two > div .cta-row { margin-top: auto; }
/* Ensure paragraph sits tightly under headings inside training cards */
.layout-sidebar .content-area .card h3 { margin-bottom: .35rem; }
.layout-sidebar .content-area .card > p { margin-top: 0; }
.toc h3 { margin: 0 0 .5rem; font-size: 1rem; color: var(--muted); text-transform: uppercase; letter-spacing: .08em; }
.toc h4 { margin: .75rem 0 .25rem; font-size: .95rem; color: var(--fg); }
.toc summary { margin: .5rem 0 .25rem; font-size: .95rem; color: var(--fg); display: block; padding: .4rem .5rem; border-radius: .3rem; cursor: pointer; }
.toc summary::before { content: '▸'; display: inline-block; margin-right: .35rem; color: var(--muted); transition: transform .15s ease, color .15s ease; }
.toc details[open] > summary { color: var(--fg); border-color: var(--border); background: var(--card); }
.toc details[open] > summary::before { transform: rotate(90deg); color: var(--fg); }
.toc details > ul { margin-top: .25rem; }
.toc ul { list-style: none; margin: 0; padding: 0; display: grid; gap: .4rem; }
.toc a { display: block; padding: .4rem .5rem; border-radius: .3rem; color: var(--muted); border: 1px solid transparent; }
.toc a:hover { color: var(--fg); border-color: var(--border); background: var(--card); }
/* nested groups get a subtle guide line */
.toc ul + h4 { margin-top: 1rem; }
.toc ul ul { padding-left: .5rem; border-left: 1px solid var(--border); }
@media (max-width: 900px) { .layout-sidebar { grid-template-columns: 1fr; } .sidebar { position: static; } }
.table { width: 100%; border-collapse: collapse; }
.table th, .table td { padding: .75rem; border-bottom: 1px solid var(--border); text-align: left; }
.table th { border-bottom-color: var(--border-strong); }
.site-footer { border-top: 1px solid var(--border); padding: 1.25rem 0; color: var(--muted); }
.footer-brand img { display: block; height: 22px; width: auto; filter: brightness(1.2); }

/* Footer link columns */
.footer-links { justify-content: center; }
.footer-links .col { margin: 0 2rem; }

/* Steps */
.steps { counter-reset: step; list-style: none; padding: 0; margin: 1rem 0 0; display: grid; gap: 1rem; grid-template-columns: repeat(4, 1fr); }
.steps li { background: var(--card); border: 1px solid var(--border); border-radius: .75rem; padding: 1rem 1.25rem; }
.steps li h4 { margin: 0 0 .25rem; }
@media (max-width: 900px) { .steps { grid-template-columns: 1fr; } }

/* Step number at top with underline */
.steps li { counter-increment: step; position: relative; }
.steps li::before {
  content: counter(step);
  display: inline-block;
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--fg);
  border-bottom: 2px solid var(--border-strong);
  padding-bottom: .2rem;
  margin-bottom: .5rem;
}

/* Screenshots */
.screenshot { width: 100%; display: block; border-radius: .5rem; border: 1px solid var(--border); }

/* Ordered steps list for training sections */
.steps-list { list-style: none; padding: 0; margin: .75rem 0 1rem; counter-reset: step; }
.steps-list li { position: relative; padding-left: 1.5rem; margin: .25rem 0; counter-increment: step; }
.steps-list li::before { content: counter(step) "."; position: absolute; left: 0; top: 0; color: var(--muted); font-weight: 600; }
.steps-list + .cta-row { margin-top: 1.5rem; }

/* Login page tweaks */
.login-page .card { border: 0; padding: .8rem 1rem; }
.login-page .grid.two { gap: 1.5rem; }\\\\\
/* Ensure equal-height cards, fixed image height, and bottom-aligned CTAs */
.login-page .grid.two .card { display: flex; flex-direction: column; }
.login-page .card .screenshot { object-fit: cover; object-position: top; }
.login-page .card .cta-row { margin-top: auto; }
/* Brand row spacing under screenshots */
.login-page .brand-row { display: flex; align-items: center; gap: .5rem; margin: .75rem 0 .25rem; }
/* Reduce top margin before titles on login page */
.login-page .card h3 { margin-top: .25rem; }

/* Focus styles */
.focus-ring { outline: 2px solid var(--focus); outline-offset: 2px; }
a:focus-visible, .btn:focus-visible { outline: 2px solid var(--focus); outline-offset: 2px; }

/* How-to page spacing */
.how-to-page .card .screenshot { margin-bottom: 1rem; }
.how-to-page .card h3 { margin-top: .4rem; }
.how-to-page .card .eyebrow { margin-top: .4rem; }
.how-to-page .card ul { list-style: none; margin: .75rem 0 0; padding: 0; display: grid; gap: 1rem; }
.how-to-page .card ul li { margin: 0; }