/* ============================================================
   Kamal Mechanical — Design System
   Colors: navy / navy-deep / cream / steel / amber / slate
   Fonts:  Space Grotesk (headings) / Inter (body) / IBM Plex Mono (labels)
   ============================================================ */

:root {
  --navy: #0F2A43;
  --navy-deep: #091C2E;
  --cream: #F5F3EE;
  --steel: #2E3944;
  --amber: #E8A33D;
  --amber-dark: #C9852A;
  --slate: #7C93A3;

  --font-head: 'Space Grotesk', sans-serif;
  --font-body: 'Inter', sans-serif;
  --font-mono: 'IBM Plex Mono', monospace;

  --container: 1200px;
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --shadow-card: 0 8px 24px rgba(9, 28, 46, 0.08);
  --shadow-card-hover: 0 14px 32px rgba(9, 28, 46, 0.14);
  --header-h: 76px;
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body, h1, h2, h3, h4, p, figure, blockquote { margin: 0; }
ul, ol { margin: 0; padding: 0; list-style: none; }
a { color: inherit; text-decoration: none; }
img, svg { max-width: 100%; display: block; }
button { font: inherit; border: none; background: none; cursor: pointer; }
input, textarea { font: inherit; }

body {
  font-family: var(--font-body);
  color: var(--steel);
  background: var(--cream);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 {
  font-family: var(--font-head);
  color: var(--navy);
  line-height: 1.15;
  font-weight: 600;
}

h1 { font-size: clamp(2.2rem, 4.5vw, 3.4rem); }
h2 { font-size: clamp(1.7rem, 3vw, 2.4rem); }
h3 { font-size: 1.25rem; }

.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

section { padding: 88px 0; }

@media (max-width: 640px) {
  section { padding: 56px 0; }
}

.mono { font-family: var(--font-mono); }

/* ---------- Blueprint grid motif ---------- */
.blueprint-grid {
  position: relative;
  background-color: var(--navy);
  background-image:
    linear-gradient(rgba(245, 243, 238, 0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(245, 243, 238, 0.06) 1px, transparent 1px);
  background-size: 32px 32px;
}

.blueprint-grid--light {
  background-color: var(--cream);
  background-image:
    linear-gradient(rgba(15, 42, 67, 0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(15, 42, 67, 0.06) 1px, transparent 1px);
}

/* ---------- Spec-tag pill ---------- */
.spec-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 5px 12px;
  border: 1px solid var(--amber);
  border-radius: 999px;
  color: var(--amber);
  background: rgba(232, 163, 61, 0.08);
}

.spec-tag--dark {
  color: var(--navy);
  border-color: var(--navy);
  background: rgba(15, 42, 67, 0.06);
}

.spec-tag::before {
  content: '';
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: currentColor;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 26px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.95rem;
  transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.15s ease, color 0.15s ease;
  white-space: nowrap;
}

.btn-primary {
  background: var(--amber);
  color: var(--navy-deep);
}
.btn-primary:hover { background: var(--amber-dark); transform: translateY(-1px); }

.btn-outline {
  border: 1.5px solid var(--cream);
  color: var(--cream);
}
.btn-outline:hover { background: rgba(245, 243, 238, 0.1); transform: translateY(-1px); }

.btn-outline-navy {
  border: 1.5px solid var(--navy);
  color: var(--navy);
}
.btn-outline-navy:hover { background: rgba(15, 42, 67, 0.06); transform: translateY(-1px); }

/* ============================================================
   Header / Navigation
   ============================================================ */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--header-h);
  background: var(--navy);
  z-index: 100;
  border-bottom: 1px solid rgba(245, 243, 238, 0.08);
}

.site-header .container {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 1.15rem;
  color: var(--cream);
}
.brand svg, .brand-logo { width: 34px; height: 34px; }
.brand span { color: var(--amber); }

/* Header brand is shown a little larger than the footer's, on every page */
.site-header .brand { font-size: 1.35rem; gap: 12px; }
.site-header .brand svg,
.site-header .brand-logo { width: 42px; height: 42px; }

.main-nav {
  display: flex;
  align-items: center;
  gap: 36px;
}

.main-nav a {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--cream);
  position: relative;
  padding: 6px 0;
}
.main-nav a::after {
  content: '';
  position: absolute;
  left: 0; bottom: 0;
  width: 0; height: 2px;
  background: var(--amber);
  transition: width 0.2s ease;
}
.main-nav a:hover::after,
.main-nav a.active::after { width: 100%; }
.main-nav a.active { color: var(--amber); }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  width: 28px;
  padding: 6px;
}
.nav-toggle span {
  height: 2px;
  background: var(--cream);
  border-radius: 2px;
  transition: transform 0.2s ease, opacity 0.2s ease;
}
.nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

@media (max-width: 1040px) {
  .nav-toggle { display: flex; }
  .main-nav {
    position: fixed;
    top: var(--header-h);
    left: 0; right: 0;
    background: var(--navy);
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    padding: 0 24px;
    max-height: 0;
    overflow: hidden;
    border-bottom: 1px solid rgba(245, 243, 238, 0.08);
    transition: max-height 0.25s ease;
  }
  .main-nav.open { max-height: 340px; padding: 12px 24px 24px; }
  .main-nav a { width: 100%; padding: 14px 0; border-bottom: 1px solid rgba(245,243,238,0.06); }
  .main-nav .btn { margin-top: 12px; }
}

body { padding-top: var(--header-h); }

/* ============================================================
   Hero (index.html)
   ============================================================ */
.hero {
  padding: 72px 0 96px;
}
.hero .container {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 48px;
  align-items: center;
}
.hero-copy .spec-tag { margin-bottom: 20px; }
.hero-copy h1 { color: var(--cream); margin-bottom: 20px; }
.hero-copy p {
  color: var(--slate);
  font-size: 1.08rem;
  max-width: 46ch;
  margin-bottom: 32px;
}
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }

.hero-visual {
  background:
    radial-gradient(ellipse 70% 55% at 78% 18%, rgba(63, 46, 94, 0.35) 0%, transparent 60%),
    radial-gradient(ellipse 130% 110% at 22% 12%, #0B1B33 0%, #060D1E 45%, #02050D 100%);
  border: 1px solid rgba(245, 243, 238, 0.12);
  border-radius: var(--radius-lg);
  padding: 20px;
  position: relative;
  overflow: hidden;
}
.hero-visual .visual-label {
  position: absolute;
  top: 16px; left: 20px;
  z-index: 2;
}
.hero-visual svg { width: 100%; height: auto; }

.hero-telemetry {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  margin-top: 14px;
  padding-top: 14px;
  border-top: 1px solid rgba(245, 243, 238, 0.12);
  flex-wrap: wrap;
}
.hero-telemetry > div { display: flex; flex-direction: column; gap: 4px; }
.hero-telemetry .mono {
  font-size: 0.62rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--slate);
}
.hero-telemetry strong {
  font-family: var(--font-mono);
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--amber);
}

#stars .twinkle { animation: km-star-twinkle 3s ease-in-out infinite; }
#stars .twinkle:nth-child(5) { animation-delay: 0.6s; }
#stars .twinkle:nth-child(9) { animation-delay: 1.4s; }
@keyframes km-star-twinkle {
  0%, 100% { opacity: 0.5; }
  50% { opacity: 1; }
}

@media (max-width: 900px) {
  .hero .container { grid-template-columns: 1fr; }
  .hero-visual { order: -1; }
}
@media (max-width: 480px) {
  .hero-telemetry { gap: 16px 24px; }
}

/* ============================================================
   Section headers
   ============================================================ */
.section-head {
  max-width: 640px;
  margin-bottom: 48px;
}
.section-head .spec-tag { margin-bottom: 16px; }
.section-head p { color: var(--slate); font-size: 1.02rem; margin-top: 14px; }
.section-head.center { margin-left: auto; margin-right: auto; text-align: center; }

/* ============================================================
   Simulation category cards
   ============================================================ */
.sim-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 24px;
}
.sim-card {
  background: #fff;
  border-radius: var(--radius-md);
  padding: 28px;
  box-shadow: var(--shadow-card);
  border: 1px solid rgba(15, 42, 67, 0.06);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  position: relative;
  display: flex;
  flex-direction: column;
}
.sim-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-card-hover); }
.sim-card .icon {
  width: 48px; height: 48px;
  color: var(--amber);
  margin-bottom: 20px;
}
.sim-card h3 { margin-bottom: 10px; }
.sim-card p { font-size: 0.94rem; color: var(--steel); margin-bottom: 18px; flex: 1; }
.sim-card .btn, .sim-card .post-read { margin-top: auto; }
.badge-soon {
  position: absolute;
  top: 24px; right: 24px;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--slate);
  border: 1px solid var(--slate);
  padding: 3px 8px;
  border-radius: 999px;
}
.badge-live {
  position: absolute;
  top: 24px; right: 24px;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--navy-deep);
  background: var(--amber);
  padding: 3px 8px;
  border-radius: 999px;
}
.sim-card .btn { width: 100%; }

/* ============================================================
   Domain / category tiles (Simulations page drill-down)
   ============================================================ */
.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--slate);
  margin-top: 40px;
  margin-bottom: 28px;
}
#domain-grid { margin-top: 40px; }
.breadcrumb a { color: var(--navy); }
.breadcrumb a:hover { color: var(--amber-dark); }
.breadcrumb .sep { color: var(--slate); }
.breadcrumb .current { color: var(--slate); }

.tile-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
}
.tile-card {
  background: #fff;
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  border: 1px solid rgba(15, 42, 67, 0.06);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  cursor: pointer;
  display: block;
}
.tile-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-card-hover); }
.tile-banner {
  height: 130px;
  background: var(--navy);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}
.tile-banner svg { width: 56px; height: 56px; color: var(--amber); }
.tile-count {
  position: absolute;
  top: 14px; right: 14px;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--cream);
  background: rgba(245, 243, 238, 0.15);
  padding: 3px 9px;
  border-radius: 999px;
}
.tile-body { padding: 22px 24px; }
.tile-body h3 { margin-bottom: 8px; }
.tile-body p { font-size: 0.92rem; color: var(--steel); margin-bottom: 0; }
.tile-body .tile-empty { font-family: var(--font-mono); font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.05em; color: var(--slate); }

/* ============================================================
   App cards (Apps page)
   ============================================================ */
.app-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(270px, 1fr));
  gap: 24px;
}
.app-card {
  background: #fff;
  border-radius: var(--radius-md);
  padding: 28px;
  box-shadow: var(--shadow-card);
  border: 1px solid rgba(15, 42, 67, 0.06);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  display: flex;
  flex-direction: column;
}
.app-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-card-hover); }
.app-card-top {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  margin-bottom: 16px;
}
.app-icon {
  width: 56px;
  height: 56px;
  border-radius: 14px;
  flex-shrink: 0;
  object-fit: cover;
}
.app-icon-fallback {
  width: 56px;
  height: 56px;
  border-radius: 14px;
  flex-shrink: 0;
  background: var(--navy);
  color: var(--amber);
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 1.4rem;
  display: flex;
  align-items: center;
  justify-content: center;
}
.app-card-heading { flex: 1; min-width: 0; }
.app-card-heading h3 { margin-bottom: 6px; }
.category-tag {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--amber-dark);
  margin-bottom: 4px;
}
.app-card p { font-size: 0.94rem; color: var(--steel); margin-bottom: 18px; flex: 1; }

.trial-badge {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--amber-dark);
  border: 1px solid var(--amber);
  background: rgba(232, 163, 61, 0.08);
  padding: 3px 9px;
  border-radius: 999px;
  margin-bottom: 16px;
}

.platform-badges { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 20px; }
.platform-badge {
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--slate);
  border: 1px solid rgba(124, 147, 163, 0.4);
  padding: 3px 9px;
  border-radius: 999px;
}

.app-card-footer { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.price-tag {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  padding: 5px 11px;
  border-radius: 999px;
  white-space: nowrap;
}
.price-tag-free { background: rgba(232, 163, 61, 0.14); color: var(--amber-dark); }
.price-tag-paid { background: var(--navy); color: var(--cream); }
.app-card-footer .btn { flex-shrink: 0; }
.app-card-footer .btn-disabled {
  background: rgba(15, 42, 67, 0.08);
  color: var(--slate);
  cursor: default;
  pointer-events: none;
}

/* ============================================================
   Audience / mode cards
   ============================================================ */
.mode-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
}
.mode-card {
  border-radius: var(--radius-md);
  padding: 32px 28px;
  border: 1px solid rgba(15, 42, 67, 0.1);
  background: var(--cream);
}
.mode-card .mono {
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--amber-dark);
  display: block;
  margin-bottom: 12px;
}
.mode-card h3 { margin-bottom: 12px; }
.mode-card p { font-size: 0.94rem; }

/* ============================================================
   CTA band
   ============================================================ */
.cta-band {
  background: var(--navy-deep);
  text-align: center;
}
.cta-band h2 { color: var(--cream); margin-bottom: 16px; }
.cta-band p { color: var(--slate); max-width: 52ch; margin: 0 auto 32px; }

/* ============================================================
   Footer
   ============================================================ */
.site-footer {
  background: #17181c;
  color: var(--slate);
  padding: 64px 0 28px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr repeat(3, 1fr);
  gap: 32px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(245, 243, 238, 0.08);
}
.footer-brand .brand { color: var(--cream); margin-bottom: 14px; }
.footer-brand p { font-size: 0.9rem; max-width: 34ch; }
.footer-col h4 {
  color: var(--cream);
  font-size: 0.85rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin-bottom: 16px;
}
.footer-col li { margin-bottom: 10px; }
.footer-col a { font-size: 0.92rem; }
.footer-col a:hover { color: var(--amber); }
.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 24px;
  font-size: 0.82rem;
  flex-wrap: wrap;
  gap: 12px;
}

@media (max-width: 760px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 480px) {
  .footer-grid { grid-template-columns: 1fr; }
}

/* ============================================================
   Blog page
   ============================================================ */
.page-banner {
  padding: 64px 0 48px;
}
.page-banner h1 { color: var(--cream); margin: 14px 0 12px; }
.page-banner p { color: var(--slate); max-width: 60ch; }

.search-box {
  position: relative;
  max-width: 440px;
  margin-top: 32px;
}
.search-box svg {
  position: absolute;
  left: 15px;
  top: 50%;
  transform: translateY(-50%);
  width: 18px;
  height: 18px;
  color: var(--slate);
  pointer-events: none;
}
.search-box input {
  width: 100%;
  padding: 12px 16px 12px 44px;
  border: 1.5px solid rgba(15, 42, 67, 0.15);
  border-radius: var(--radius-sm);
  background: #fff;
  color: var(--steel);
  font-size: 0.95rem;
}
.search-box input:focus { outline: none; border-color: var(--amber); }
.search-box input::-webkit-search-cancel-button { cursor: pointer; }

.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  padding: 24px 0 8px;
}
.filter-btn {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  padding: 9px 18px;
  border: 1px solid rgba(15, 42, 67, 0.2);
  border-radius: 999px;
  color: var(--steel);
  transition: all 0.15s ease;
}
.filter-btn:hover { border-color: var(--navy); }
.filter-btn.active {
  background: var(--navy);
  border-color: var(--navy);
  color: var(--cream);
}

/* ============================================================
   Category sidebar — quick category switching on Simulations,
   Apps, and Games pages
   ============================================================ */
.catalog-layout {
  display: grid;
  grid-template-columns: 230px 1fr;
  gap: 32px;
  align-items: start;
  margin-top: 32px;
}
.category-sidebar {
  position: sticky;
  top: calc(var(--header-h) + 24px);
  background: #fff;
  border: 1px solid rgba(15, 42, 67, 0.08);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-card);
  padding: 20px 16px;
}
.category-sidebar h4 {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--slate);
  margin: 20px 6px 6px;
}
.category-sidebar h4:first-child { margin-top: 4px; }
.category-sidebar a,
.category-sidebar button {
  display: flex;
  width: 100%;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  text-align: left;
  font-family: var(--font-body);
  font-size: 0.9rem;
  color: var(--steel);
  background: none;
  border: none;
  border-radius: 6px;
  padding: 8px 10px;
  cursor: pointer;
  transition: background 0.15s ease, color 0.15s ease;
}
.category-sidebar a.sidebar-all,
.category-sidebar button.sidebar-all {
  font-weight: 600;
  color: var(--navy);
  margin-bottom: 8px;
  border-bottom: 1px solid rgba(15, 42, 67, 0.08);
  border-radius: 0;
  padding-bottom: 12px;
}
.category-sidebar a:hover,
.category-sidebar button:hover { background: var(--cream); color: var(--navy); }
.category-sidebar a.active,
.category-sidebar button.active { background: var(--navy); color: var(--cream); }
.category-sidebar .cat-count { font-family: var(--font-mono); font-size: 0.68rem; opacity: 0.65; }

@media (max-width: 900px) {
  .catalog-layout { grid-template-columns: 1fr; }
  .category-sidebar {
    position: static;
    display: flex;
    flex-wrap: wrap;
    gap: 4px;
  }
  .category-sidebar h4 { width: 100%; margin: 10px 6px 2px; }
  .category-sidebar a, .category-sidebar button { width: auto; }
  .category-sidebar a.sidebar-all, .category-sidebar button.sidebar-all { width: 100%; border-bottom: none; margin-bottom: 0; }
}

.blog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 28px;
  padding-top: 40px;
}
.post-card {
  background: #fff;
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  border: 1px solid rgba(15, 42, 67, 0.06);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  display: flex;
  flex-direction: column;
}
.post-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-card-hover); }
.post-thumb {
  height: 150px;
  background: var(--navy);
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}
.post-thumb svg { width: 56px; height: 56px; color: var(--amber); opacity: 0.9; }
.post-body { padding: 24px; flex: 1; display: flex; flex-direction: column; }
.post-meta {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--slate);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: 12px;
}
.post-body h3 { margin-bottom: 10px; }
.post-body p { font-size: 0.92rem; flex: 1; margin-bottom: 16px; }
.post-read {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--navy);
}
.post-read::after { content: ' →'; }
.post-card:hover .post-read { color: var(--amber-dark); }

/* ============================================================
   Updates / changelog feed
   ============================================================ */
.updates-feed {
  max-width: 760px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 18px;
}
.update-item {
  display: flex;
  gap: 28px;
  padding: 26px 28px;
  background: #fff;
  border: 1px solid rgba(15, 42, 67, 0.08);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-card);
}
.update-date {
  flex-shrink: 0;
  width: 108px;
  padding-top: 3px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--slate);
}
.update-body { flex: 1; }
.update-body h3 { margin-bottom: 8px; }
.update-body p { color: var(--steel); margin-bottom: 0; }
.update-tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 3px 10px;
  border-radius: 999px;
  margin-bottom: 10px;
  background: rgba(15, 42, 67, 0.08);
  color: var(--navy);
}
.update-tag[data-tag="game"],
.update-tag[data-tag="feature"] { background: rgba(232, 163, 61, 0.16); color: var(--amber-dark); }
.update-tag[data-tag="fix"] { background: rgba(196, 68, 51, 0.12); color: #b3402e; }
.update-related {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--slate);
  margin-bottom: 10px;
  margin-left: 10px;
}
.update-related::before { content: '· '; }
a.update-related { color: var(--navy); cursor: pointer; }
a.update-related:hover { color: var(--amber-dark); text-decoration: underline; }

@media (max-width: 600px) {
  .update-item { flex-direction: column; gap: 6px; }
  .update-date { width: auto; }
}

.no-results {
  display: none;
  text-align: center;
  padding: 60px 0;
  color: var(--slate);
}
.no-results.show { display: block; }

/* ============================================================
   Skeleton loading placeholders — shown the instant a grid
   starts fetching, so visitors see the shape of content coming
   instead of a bare "Loading…" line while the request is in flight.
   ============================================================ */
@keyframes skeleton-shimmer {
  0% { background-position: -200% 0; }
  100% { background-position: 200% 0; }
}
.skeleton-block {
  border-radius: var(--radius-md);
  background: linear-gradient(90deg, rgba(15, 42, 67, 0.06) 25%, rgba(15, 42, 67, 0.12) 37%, rgba(15, 42, 67, 0.06) 63%);
  background-size: 400% 100%;
  animation: skeleton-shimmer 1.4s ease infinite;
}
.skeleton-block.skeleton-card { height: 230px; }
.skeleton-block.skeleton-row { height: 84px; }
@media (prefers-reduced-motion: reduce) {
  .skeleton-block { animation: none; }
}

/* ============================================================
   Article page
   ============================================================ */
.article-head { padding: 64px 0 32px; }
.article-head .spec-tag { margin-bottom: 18px; }
.article-head h1 { margin-bottom: 16px; }
.article-meta { font-family: var(--font-mono); font-size: 0.8rem; color: var(--slate); text-transform: uppercase; letter-spacing: 0.04em; }
.article-body { padding-bottom: 88px; max-width: 72ch; margin-left: 0; margin-right: 0; }
.article-body h2 { margin: 40px 0 16px; }
.article-body p { margin-bottom: 18px; font-size: 1.02rem; }
.article-body ul { margin: 0 0 18px 0; padding-left: 22px; list-style: disc; }
.article-body li { margin-bottom: 8px; }
.article-body a { color: var(--amber-dark); text-decoration: underline; text-underline-offset: 2px; }
.article-body a:hover { color: var(--navy); }
.article-note {
  border-left: 3px solid var(--amber);
  background: rgba(232, 163, 61, 0.06);
  padding: 16px 20px;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  margin-bottom: 24px;
  font-size: 0.94rem;
}

/* ============================================================
   Contact page
   ============================================================ */
.contact-wrap {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 48px;
  padding: 64px 0 96px;
}
.contact-form-card {
  background: #fff;
  border-radius: var(--radius-lg);
  padding: 40px;
  box-shadow: var(--shadow-card);
  border: 1px solid rgba(15, 42, 67, 0.06);
}
.form-row { margin-bottom: 22px; }
.form-row label {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--steel);
  margin-bottom: 8px;
}
.form-row input,
.form-row select,
.form-row textarea {
  width: 100%;
  padding: 13px 14px;
  border: 1.5px solid rgba(15, 42, 67, 0.15);
  border-radius: var(--radius-sm);
  background: var(--cream);
  color: var(--steel);
  transition: border-color 0.15s ease;
}
.form-row input:focus,
.form-row select:focus,
.form-row textarea:focus {
  outline: none;
  border-color: var(--amber);
}
.form-row textarea { resize: vertical; min-height: 130px; }
.form-success {
  display: none;
  background: rgba(232, 163, 61, 0.12);
  border: 1px solid var(--amber);
  color: var(--navy);
  padding: 14px 18px;
  border-radius: var(--radius-sm);
  margin-bottom: 22px;
  font-size: 0.92rem;
}
.form-success.show { display: block; }
/* honeypot field, hidden from real users */
.hp-field { position: absolute; left: -9999px; top: -9999px; }

.contact-info h2 { margin-bottom: 18px; }
.contact-info > p { margin-bottom: 28px; }
.info-item {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  margin-bottom: 24px;
}
.info-item svg { width: 22px; height: 22px; color: var(--amber-dark); flex-shrink: 0; margin-top: 3px; }
.info-item h4 { font-size: 0.95rem; color: var(--navy); margin-bottom: 4px; }
.info-item p { font-size: 0.92rem; }

@media (max-width: 860px) {
  .contact-wrap { grid-template-columns: 1fr; padding: 40px 0 64px; }
}

/* ============================================================
   404 page
   ============================================================ */
.error-page {
  min-height: calc(100vh - var(--header-h));
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 64px 24px;
}
.error-page .mono { color: var(--amber-dark); margin-bottom: 16px; display: block; font-size: 0.85rem; letter-spacing: 0.08em; text-transform: uppercase; }
.error-page h1 { font-size: clamp(2rem, 6vw, 3rem); margin-bottom: 14px; }
.error-page p { color: var(--slate); margin: 0 auto 28px; max-width: 56ch; }
.error-page.blueprint-grid h1 { color: var(--cream); }

/* ============================================================
   Simulation lab pages (/simulations/*.html)
   Each lab picks one --sim-accent used for its own moving parts /
   chart lines, layered on the shared navy+white shell.
   ============================================================ */
.sim-lab-hero { padding: 40px 0 28px; }
.sim-lab-hero .breadcrumb { margin: 0 0 18px; }
.sim-lab-hero h1 { color: var(--cream); margin-bottom: 8px; }
.sim-lab-hero p { color: var(--slate); max-width: 62ch; }

.sim-lab-body { padding: 40px 0 88px; }
.sim-lab-grid {
  display: grid;
  grid-template-columns: 1.35fr 1fr;
  gap: 28px;
  align-items: start;
}
@media (max-width: 900px) {
  .sim-lab-grid { grid-template-columns: 1fr; }
}

.sim-stage {
  background: var(--navy);
  border-radius: var(--radius-lg);
  padding: 20px;
  position: relative;
  overflow: hidden;
}
.sim-stage svg { width: 100%; height: auto; display: block; }
.sim-stage .visual-label { position: absolute; top: 16px; left: 20px; z-index: 2; }

.sim-readouts {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: 12px;
  margin-top: 16px;
}
.stat-tile {
  background: #fff;
  border: 1px solid rgba(15, 42, 67, 0.08);
  border-radius: var(--radius-sm);
  padding: 12px 14px;
  box-shadow: var(--shadow-card);
}
.stat-tile .label {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--slate);
  margin-bottom: 4px;
}
.stat-tile .value {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 1.3rem;
  color: var(--sim-accent, var(--navy));
}
.stat-tile .value .unit { font-size: 0.7rem; font-weight: 500; color: var(--slate); margin-left: 2px; }

.sim-controls {
  background: #fff;
  border-radius: var(--radius-md);
  padding: 26px;
  box-shadow: var(--shadow-card);
  border: 1px solid rgba(15, 42, 67, 0.06);
}
.sim-controls h3 { font-size: 1.05rem; margin-bottom: 18px; }
.control-row { margin-bottom: 18px; }
.control-row:last-child { margin-bottom: 0; }
.control-row .row-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 8px;
}
.control-row label {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.03em;
  color: var(--steel);
}
.control-row .row-value {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--sim-accent, var(--amber-dark));
}
.control-row input[type="range"] {
  width: 100%;
  height: 4px;
  border-radius: 999px;
  background: rgba(15, 42, 67, 0.12);
  appearance: none;
  outline: none;
}
.control-row input[type="range"]::-webkit-slider-thumb {
  appearance: none;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--sim-accent, var(--amber));
  border: 3px solid #fff;
  box-shadow: 0 1px 4px rgba(9, 28, 46, 0.3);
  cursor: pointer;
}
.control-row input[type="range"]::-moz-range-thumb {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--sim-accent, var(--amber));
  border: 3px solid #fff;
  box-shadow: 0 1px 4px rgba(9, 28, 46, 0.3);
  cursor: pointer;
}
.control-row select {
  width: 100%;
  padding: 9px 12px;
  border: 1.5px solid rgba(15, 42, 67, 0.15);
  border-radius: var(--radius-sm);
  background: var(--cream);
  font-size: 0.9rem;
  color: var(--steel);
}
.control-buttons { display: flex; gap: 10px; margin-top: 22px; }
.control-buttons .btn { flex: 1; }

.sim-about {
  border-left: 3px solid var(--sim-accent, var(--amber));
  background: rgba(15, 42, 67, 0.03);
  padding: 18px 22px;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  margin-top: 28px;
  font-size: 0.95rem;
  color: var(--steel);
}
.sim-about strong { color: var(--navy); }

/* ============================================================
   About page — founder section
   ============================================================ */
.founder-row {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: 20px;
  align-items: center;
}
.founder-photo {
  position: relative;
  aspect-ratio: 4 / 5;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-card-hover);
}
.founder-photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: 50% 20%;
  filter: grayscale(20%) contrast(1.08) saturate(0.85);
  display: block;
}
.founder-photo::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(165deg, rgba(15, 42, 67, 0.6) 0%, rgba(15, 42, 67, 0.05) 40%, rgba(232, 163, 61, 0.35) 100%);
  mix-blend-mode: multiply;
}
.founder-photo::before {
  content: '';
  position: absolute;
  inset: 0;
  border: 2px solid rgba(232, 163, 61, 0.45);
  border-radius: var(--radius-lg);
  z-index: 2;
  pointer-events: none;
}
.founder-bio .mono {
  display: block;
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--amber-dark);
  margin-bottom: 10px;
}
.founder-bio h2 { margin-bottom: 16px; }
.founder-bio p { color: var(--steel); margin-bottom: 16px; }
.founder-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 28px;
  margin-top: 20px;
  padding-top: 20px;
  border-top: 1px solid rgba(15, 42, 67, 0.08);
}
.founder-meta .label {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--slate);
  margin-bottom: 4px;
}
.founder-meta .value { font-weight: 600; color: var(--navy); }

@media (max-width: 720px) {
  .founder-row { grid-template-columns: 1fr; }
  .founder-photo { max-width: 320px; margin: 0 auto; }
}

.live-heading {
  display: inline-flex;
  align-items: center;
  gap: 10px;
}
.live-dot {
  display: inline-block;
  width: 10px;
  height: 10px;
  flex-shrink: 0;
  border-radius: 50%;
  background: #2ECC71;
  box-shadow: 0 0 0 rgba(46, 204, 113, 0.55);
  animation: km-live-pulse 1.8s ease-out infinite;
}
@keyframes km-live-pulse {
  0% { box-shadow: 0 0 0 0 rgba(46, 204, 113, 0.55); }
  70% { box-shadow: 0 0 0 9px rgba(46, 204, 113, 0); }
  100% { box-shadow: 0 0 0 0 rgba(46, 204, 113, 0); }
}