/* secctl.io */

/* ============================================================
   CSS Variables — secctl.io brand palette
   ============================================================ */
:root {
  --dvst-primary:    #0f172a;
  --dvst-accent:     #3b82f6;
  --dvst-accent-dark:#2563eb;
  --dvst-success:    #10b981;
  --dvst-warning:    #f59e0b;
  --dvst-danger:     #ef4444;
  --dvst-muted:      #64748b;
  --dvst-border:     #1e293b;
  --dvst-surface:    #1e293b;
  --dvst-surface-2:  #0f172a;
  --dvst-text:       #f1f5f9;
  --dvst-text-muted: #94a3b8;
  --dvst-code-bg:    #0d1117;
  --dvst-code-text:  #e2e8f0;
  --dvst-radius:     0.5rem;
  --dvst-radius-lg:  0.75rem;
  --dvst-transition: 0.2s ease;
}

/* ============================================================
   Base & Typography
   ============================================================ */
body {
  background-color: #f8fafc;
  color: #1e293b;
  font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
  font-size: 1rem;
  line-height: 1.7;
}

h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  color: var(--dvst-primary);
  line-height: 1.3;
}

a {
  color: var(--dvst-accent);
  text-decoration: none;
  transition: color var(--dvst-transition);
}

a:hover {
  color: var(--dvst-accent-dark);
  text-decoration: underline;
}

/* ============================================================
   Navbar — .navbar-dvst
   ============================================================ */
.navbar-dvst {
  background-color: var(--dvst-primary);
  border-bottom: 1px solid var(--dvst-border);
  padding: 0.75rem 0;
}

.navbar-dvst .navbar-brand {
  color: #fff;
  font-weight: 700;
  font-size: 1.2rem;
  letter-spacing: -0.01em;
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.navbar-dvst .navbar-brand:hover {
  color: var(--dvst-accent);
  text-decoration: none;
}

.navbar-dvst .navbar-brand .brand-icon {
  color: var(--dvst-accent);
  font-size: 1.4rem;
}

.navbar-dvst .nav-link {
  color: #cbd5e1 !important;
  font-weight: 500;
  padding: 0.5rem 0.75rem !important;
  border-radius: var(--dvst-radius);
  transition: all var(--dvst-transition);
}

.navbar-dvst .nav-link:hover,
.navbar-dvst .nav-link:focus {
  color: #fff !important;
  background-color: rgba(255,255,255,0.08);
  text-decoration: none;
}

.navbar-dvst .nav-link.active {
  color: var(--dvst-accent) !important;
}

.navbar-dvst .dropdown-menu {
  background-color: var(--dvst-surface);
  border: 1px solid var(--dvst-border);
  border-radius: var(--dvst-radius);
  box-shadow: 0 8px 24px rgba(0,0,0,0.3);
  min-width: 220px;
  margin-top: 0.25rem;
}

.navbar-dvst .dropdown-item {
  color: #cbd5e1;
  padding: 0.5rem 1rem;
  font-size: 0.9rem;
  transition: all var(--dvst-transition);
}

.navbar-dvst .dropdown-item:hover {
  background-color: rgba(59, 130, 246, 0.12);
  color: #fff;
}

.navbar-dvst .dropdown-item .bi {
  margin-right: 0.4rem;
  color: var(--dvst-accent);
}

.navbar-dvst .navbar-toggler {
  border-color: rgba(255,255,255,0.2);
}

.navbar-dvst .navbar-toggler-icon {
  filter: invert(1);
}

.navbar-dvst .btn-github {
  background: rgba(255,255,255,0.08);
  color: #fff !important;
  border: 1px solid rgba(255,255,255,0.15);
  padding: 0.35rem 0.85rem;
  border-radius: var(--dvst-radius);
  font-size: 0.9rem;
  transition: all var(--dvst-transition);
}

.navbar-dvst .btn-github:hover {
  background: rgba(255,255,255,0.15);
  text-decoration: none;
}

/* ============================================================
   Hero section
   ============================================================ */
.hero {
  background-color: var(--dvst-primary);
  background-image:
    linear-gradient(rgba(59,130,246,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(59,130,246,0.04) 1px, transparent 1px);
  background-size: 40px 40px;
  color: #f1f5f9;
  padding: 5rem 0 4rem;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -40%;
  right: -10%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(59,130,246,0.08) 0%, transparent 70%);
  pointer-events: none;
}

.hero h1 {
  color: #fff;
  font-size: 2.8rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.15;
}

.hero .hero-sub {
  color: #94a3b8;
  font-size: 1.15rem;
  max-width: 580px;
  line-height: 1.7;
}

.hero .hero-badge {
  display: inline-block;
  background: rgba(59,130,246,0.15);
  border: 1px solid rgba(59,130,246,0.3);
  color: var(--dvst-accent);
  font-size: 0.8rem;
  font-weight: 600;
  padding: 0.25rem 0.75rem;
  border-radius: 50px;
  margin-bottom: 1rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.hero-product h1 {
  font-size: 2.2rem;
}

.hero-product {
  padding-top: 2rem;
}

/* ============================================================
   App sticky header — product sub-pages
   ============================================================ */
.app-sticky-header {
  position: sticky;
  top: 0;
  z-index: 900;
  background: var(--dvst-primary);
  border-bottom: 1px solid rgba(59,130,246,0.15);
  padding: 8px 0;
}

.app-sticky-header .app-name {
  font-size: 1rem;
  font-weight: 700;
  color: var(--dvst-accent);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}

/* ============================================================
   Software cards — .software-card
   ============================================================ */
.software-card {
  background: #fff;
  border: 1px solid #e2e8f0;
  border-left: 4px solid var(--dvst-accent);
  border-radius: var(--dvst-radius-lg);
  padding: 1.75rem;
  transition: all var(--dvst-transition);
  height: 100%;
  position: relative;
  overflow: hidden;
}

.software-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--dvst-accent), transparent);
  opacity: 0;
  transition: opacity var(--dvst-transition);
}

.software-card:hover {
  box-shadow: 0 8px 32px rgba(59,130,246,0.12);
  transform: translateY(-2px);
  border-left-color: var(--dvst-accent-dark);
}

.software-card:hover::before {
  opacity: 1;
}

.software-card.card-placeholder {
  border-left-color: #cbd5e1;
  border-style: dashed;
  background: #f8fafc;
}

.software-card .card-title {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--dvst-primary);
  margin-bottom: 0.5rem;
}

.software-card .card-desc {
  color: #475569;
  font-size: 0.95rem;
  margin-bottom: 1rem;
}

.software-card .card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  margin-bottom: 1.25rem;
}

.software-card .card-tag {
  background: #f1f5f9;
  color: #475569;
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.2rem 0.6rem;
  border-radius: 50px;
  border: 1px solid #e2e8f0;
}

/* ============================================================
   Feature icons — .feature-icon
   ============================================================ */
.feature-icon {
  width: 52px;
  height: 52px;
  border-radius: var(--dvst-radius);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  flex-shrink: 0;
  margin-bottom: 1rem;
}

.feature-icon-blue  { background: rgba(59,130,246,0.1);  color: var(--dvst-accent); }
.feature-icon-green { background: rgba(16,185,129,0.1);  color: var(--dvst-success); }
.feature-icon-amber { background: rgba(245,158,11,0.1);  color: var(--dvst-warning); }
.feature-icon-red   { background: rgba(239,68,68,0.1);   color: var(--dvst-danger); }
.feature-icon-slate { background: rgba(100,116,139,0.1); color: var(--dvst-muted); }

.feature-block {
  padding: 1.5rem;
  border-radius: var(--dvst-radius-lg);
  background: #fff;
  border: 1px solid #e2e8f0;
  height: 100%;
  transition: box-shadow var(--dvst-transition);
}

.feature-block:hover {
  box-shadow: 0 4px 16px rgba(0,0,0,0.06);
}

/* ============================================================
   Code blocks — .code-block
   ============================================================ */
.code-block {
  background: var(--dvst-code-bg);
  color: var(--dvst-code-text);
  border-radius: var(--dvst-radius);
  padding: 1.25rem 1.5rem;
  font-family: 'Fira Code', 'Cascadia Code', 'Consolas', monospace;
  font-size: 0.875rem;
  line-height: 1.6;
  overflow-x: auto;
  position: relative;
  border: 1px solid rgba(255,255,255,0.06);
}

.code-block pre {
  margin: 0;
  background: transparent;
  color: inherit;
  font-size: inherit;
  font-family: inherit;
}

.code-block .cb-lang {
  position: absolute;
  top: 0.5rem;
  right: 0.75rem;
  font-size: 0.7rem;
  color: #475569;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-family: sans-serif;
}

/* Syntax highlights (simple CSS classes) */
.code-block .kw  { color: #c792ea; } /* keyword */
.code-block .str { color: #a3e635; } /* string */
.code-block .cm  { color: #546e7a; } /* comment */
.code-block .num { color: #f78c6c; } /* number */
.code-block .fn  { color: #82b1ff; } /* function */
.code-block .var { color: #eeffff; } /* variable */
.code-block .op  { color: #89ddff; } /* operator */

/* Inline code */
code:not(.code-block code) {
  background: #f1f5f9;
  color: #0f172a;
  padding: 0.15em 0.4em;
  border-radius: 4px;
  font-size: 0.875em;
  font-family: 'Fira Code', 'Cascadia Code', 'Consolas', monospace;
  border: 1px solid #e2e8f0;
}

/* ============================================================
   Breadcrumb — .breadcrumb-dvst
   ============================================================ */
.breadcrumb-dvst {
  background: transparent;
  padding: 0;
  margin: 0;
}

.breadcrumb-dvst .breadcrumb-item {
  font-size: 0.875rem;
  color: var(--dvst-muted);
}

.breadcrumb-dvst .breadcrumb-item a {
  color: var(--dvst-accent);
}

.breadcrumb-dvst .breadcrumb-item.active {
  color: #475569;
  font-weight: 600;
}

.breadcrumb-dvst .breadcrumb-item + .breadcrumb-item::before {
  color: #cbd5e1;
}

.breadcrumb-wrapper {
  background: #f8fafc;
  border-bottom: 1px solid #e2e8f0;
  padding: 0.75rem 0;
}

/* ============================================================
   Sidebar — .sidebar-nav
   ============================================================ */
.sidebar-nav {
  position: sticky;
  top: 80px;
  background: #fff;
  border: 1px solid #e2e8f0;
  border-radius: var(--dvst-radius-lg);
  padding: 1.25rem 0;
  max-height: calc(100vh - 100px);
  overflow-y: auto;
}

.sidebar-nav .sidebar-heading {
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--dvst-muted);
  padding: 0.5rem 1.25rem 0.25rem;
}

.sidebar-nav .nav-link {
  color: #475569;
  font-size: 0.9rem;
  padding: 0.45rem 1.25rem;
  border-radius: 0;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  transition: all var(--dvst-transition);
  border-left: 2px solid transparent;
}

.sidebar-nav .nav-link:hover {
  color: var(--dvst-accent);
  background: rgba(59,130,246,0.05);
  border-left-color: var(--dvst-accent);
  text-decoration: none;
}

.sidebar-nav .nav-link.active {
  color: var(--dvst-accent);
  background: rgba(59,130,246,0.08);
  border-left-color: var(--dvst-accent);
  font-weight: 600;
}

.sidebar-nav .nav-link .bi {
  font-size: 0.9rem;
  opacity: 0.7;
}

.sidebar-divider {
  height: 1px;
  background: #f1f5f9;
  margin: 0.5rem 0;
}

/* ============================================================
   Badge — .badge-version
   ============================================================ */
.badge-version {
  background: rgba(59,130,246,0.12);
  color: var(--dvst-accent);
  border: 1px solid rgba(59,130,246,0.25);
  font-size: 0.75rem;
  font-weight: 700;
  padding: 0.3rem 0.65rem;
  border-radius: 50px;
  letter-spacing: 0.02em;
}

/* ============================================================
   Step numbers — .step-number
   ============================================================ */
.step-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2rem;
  height: 2rem;
  background: var(--dvst-accent);
  color: #fff;
  font-weight: 700;
  font-size: 0.9rem;
  border-radius: 50%;
  flex-shrink: 0;
}

.step-block {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
  margin-bottom: 1.75rem;
}

.step-block .step-content {
  flex: 1;
}

.step-block h4 {
  font-size: 1.05rem;
  margin-bottom: 0.5rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--dvst-primary);
}

/* ============================================================
   TOC — .toc
   ============================================================ */
.toc {
  background: #f8fafc;
  border: 1px solid #e2e8f0;
  border-radius: var(--dvst-radius);
  padding: 1rem 1.25rem;
}

.toc .toc-title {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--dvst-muted);
  margin-bottom: 0.75rem;
}

.toc ol, .toc ul {
  margin: 0;
  padding-left: 1.25rem;
}

.toc li {
  font-size: 0.875rem;
  margin-bottom: 0.3rem;
}

.toc a {
  color: #475569;
}

.toc a:hover {
  color: var(--dvst-accent);
}

/* ============================================================
   Section styles
   ============================================================ */
.section-title {
  font-size: 1.6rem;
  font-weight: 800;
  margin-bottom: 0.5rem;
}

.section-sub {
  color: #64748b;
  font-size: 1.05rem;
  margin-bottom: 2.5rem;
}

.section-label {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--dvst-accent);
  margin-bottom: 0.5rem;
}

/* Mission pillars */
.mission-block {
  background: #fff;
  border: 1px solid #e2e8f0;
  border-radius: var(--dvst-radius-lg);
  padding: 2rem 1.5rem;
  text-align: center;
  height: 100%;
  transition: box-shadow var(--dvst-transition);
}

.mission-block:hover {
  box-shadow: 0 4px 20px rgba(0,0,0,0.06);
}

.mission-block .mission-icon {
  font-size: 2rem;
  margin-bottom: 1rem;
}

/* Info/requirement boxes */
.info-box {
  background: rgba(59,130,246,0.05);
  border: 1px solid rgba(59,130,246,0.2);
  border-left: 4px solid var(--dvst-accent);
  border-radius: var(--dvst-radius);
  padding: 1rem 1.25rem;
  margin: 1rem 0;
}

.info-box.warning {
  background: rgba(245,158,11,0.05);
  border-color: rgba(245,158,11,0.2);
  border-left-color: var(--dvst-warning);
}

.info-box.success {
  background: rgba(16,185,129,0.05);
  border-color: rgba(16,185,129,0.2);
  border-left-color: var(--dvst-success);
}

.info-box.danger {
  background: rgba(239,68,68,0.05);
  border-color: rgba(239,68,68,0.2);
  border-left-color: var(--dvst-danger);
}

.info-box .info-title {
  font-weight: 700;
  font-size: 0.9rem;
  margin-bottom: 0.25rem;
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

/* Architecture diagram */
.arch-diagram {
  background: var(--dvst-code-bg);
  color: #a3e635;
  border-radius: var(--dvst-radius);
  padding: 1.5rem 2rem;
  font-family: 'Fira Code', 'Cascadia Code', 'Consolas', monospace;
  font-size: 0.85rem;
  line-height: 1.8;
  overflow-x: auto;
  border: 1px solid rgba(255,255,255,0.06);
}

/* Tables */
.table-dvst {
  font-size: 0.9rem;
}

.table-dvst th {
  background: #f8fafc;
  color: var(--dvst-primary);
  font-weight: 700;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-bottom: 2px solid #e2e8f0;
}

.table-dvst td {
  vertical-align: middle;
  border-color: #f1f5f9;
}

.table-dvst tbody tr:hover {
  background: rgba(59,130,246,0.03);
}

/* ============================================================
   Footer
   ============================================================ */
.site-footer {
  background: var(--dvst-primary);
  color: #94a3b8;
  padding: 3rem 0 1.5rem;
  margin-top: 4rem;
}

.site-footer .footer-logo {
  color: #fff;
  font-weight: 700;
  font-size: 1.1rem;
  display: flex;
  align-items: center;
  gap: 0.4rem;
  margin-bottom: 0.75rem;
}

.site-footer .footer-logo .bi {
  color: var(--dvst-accent);
}

.site-footer .footer-tagline {
  font-size: 0.875rem;
  color: #64748b;
  margin-bottom: 1.5rem;
}

.site-footer h6 {
  color: #fff;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-weight: 700;
  margin-bottom: 0.75rem;
}

.site-footer a {
  color: #64748b;
  font-size: 0.875rem;
  display: block;
  margin-bottom: 0.35rem;
  transition: color var(--dvst-transition);
}

.site-footer a:hover {
  color: var(--dvst-accent);
  text-decoration: none;
}

.site-footer .footer-bottom {
  border-top: 1px solid var(--dvst-border);
  padding-top: 1.5rem;
  margin-top: 2rem;
  font-size: 0.82rem;
  color: #475569;
}

.site-footer .footer-bottom a {
  display: inline;
  color: #475569;
}

.site-footer .footer-bottom a:hover {
  color: var(--dvst-accent);
}

/* ============================================================
   Docs page layout
   ============================================================ */
.docs-layout {
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: 2rem;
  align-items: start;
}

.docs-content h2 {
  font-size: 1.6rem;
  padding-top: 2rem;
  margin-top: 2rem;
  border-top: 1px solid #f1f5f9;
}

.docs-content h2:first-child {
  padding-top: 0;
  margin-top: 0;
  border-top: none;
}

.docs-content h3 {
  font-size: 1.2rem;
  margin-top: 1.5rem;
}

/* ============================================================
   Changelog
   ============================================================ */
.changelog-entry {
  border-left: 2px solid #e2e8f0;
  padding-left: 1.5rem;
  margin-bottom: 3rem;
  position: relative;
}

.changelog-entry::before {
  content: '';
  position: absolute;
  left: -5px;
  top: 0.35rem;
  width: 8px;
  height: 8px;
  background: var(--dvst-accent);
  border-radius: 50%;
}

.changelog-entry.latest::before {
  background: var(--dvst-success);
}

.changelog-entry .version-tag {
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--dvst-primary);
  margin-bottom: 0.25rem;
}

.changelog-entry .release-date {
  font-size: 0.85rem;
  color: var(--dvst-muted);
  margin-bottom: 1rem;
}

.changelog-entry .change-type {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: var(--dvst-success);
  margin-bottom: 0.5rem;
}

.changelog-entry .change-type.limitation {
  color: var(--dvst-warning);
}

/* ============================================================
   Score visualization
   ============================================================ */
.score-bar {
  height: 8px;
  background: #e2e8f0;
  border-radius: 4px;
  overflow: hidden;
}

.score-bar-fill {
  height: 100%;
  border-radius: 4px;
  background: linear-gradient(90deg, var(--dvst-success), var(--dvst-warning), var(--dvst-danger));
}

/* ============================================================
   Utility classes
   ============================================================ */
.text-accent  { color: var(--dvst-accent) !important; }
.text-success-dvst { color: var(--dvst-success) !important; }
.text-muted-dvst   { color: var(--dvst-text-muted) !important; }
.bg-primary-dvst   { background-color: var(--dvst-primary) !important; }
.bg-surface        { background-color: var(--dvst-surface) !important; }
.border-accent     { border-color: var(--dvst-accent) !important; }
.rounded-dvst      { border-radius: var(--dvst-radius) !important; }

.section-pad { padding: 4rem 0; }
.section-pad-sm { padding: 2.5rem 0; }

/* ============================================================
   Responsive
   ============================================================ */
@media (max-width: 991.98px) {
  .hero h1       { font-size: 2rem; }
  .hero-product h1 { font-size: 1.75rem; }
  .docs-layout   { grid-template-columns: 1fr; }
  .sidebar-nav   { position: static; max-height: none; }
  .section-pad   { padding: 2.5rem 0; }
}

@media (max-width: 767.98px) {
  .hero { padding: 3rem 0 2.5rem; }
  .hero h1 { font-size: 1.75rem; }
  .software-card { padding: 1.25rem; }
  .step-block    { flex-direction: column; gap: 0.75rem; }
}