@font-face { font-family: "Space Grotesk"; font-style: normal; font-weight: 400; font-display: swap; src: url("fonts/space-grotesk-latin-400-normal.woff2") format("woff2"); }
@font-face { font-family: "Space Grotesk"; font-style: normal; font-weight: 500; font-display: swap; src: url("fonts/space-grotesk-latin-500-normal.woff2") format("woff2"); }
@font-face { font-family: "Space Grotesk"; font-style: normal; font-weight: 700; font-display: swap; src: url("fonts/space-grotesk-latin-700-normal.woff2") format("woff2"); }
@font-face { font-family: "JetBrains Mono"; font-style: normal; font-weight: 400; font-display: swap; src: url("fonts/jetbrains-mono-latin-400-normal.woff2") format("woff2"); }
@font-face { font-family: "JetBrains Mono"; font-style: normal; font-weight: 600; font-display: swap; src: url("fonts/jetbrains-mono-latin-600-normal.woff2") format("woff2"); }
@font-face { font-family: "JetBrains Mono"; font-style: normal; font-weight: 700; font-display: swap; src: url("fonts/jetbrains-mono-latin-700-normal.woff2") format("woff2"); }

/* ==========================================================================
   TechByBilbo — core design system
   Shared by the static site (wwwroot/css/site.css) and the DNN theme (skin.css).
   Edit here, then run build.sh to regenerate both.
   ========================================================================== */

:root {
  --tbb-bg: #0a0d12;
  --tbb-bg-2: #0f141b;
  --tbb-panel: #141a23;
  --tbb-panel-2: #1a222d;
  --tbb-line: #243040;
  --tbb-text: #e8edf3;
  --tbb-muted: #8d99aa;
  --tbb-accent: #c8ff2e;          /* signal lime */
  --tbb-accent-ink: #0a0d12;
  --tbb-accent-soft: rgba(200, 255, 46, 0.12);
  --tbb-cyan: #3ad0ff;
  --tbb-danger: #ff5d5d;

  --tbb-font: "Space Grotesk", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --tbb-mono: "JetBrains Mono", ui-monospace, "Cascadia Code", Consolas, monospace;

  --tbb-wrap: 1180px;
  --tbb-gutter: clamp(16px, 4vw, 40px);
  --tbb-radius: 14px;
  --tbb-radius-sm: 8px;
  --tbb-section: clamp(72px, 10vw, 128px);
}

/* ---------- base ---------- */
.tbb, .tbb *, .tbb *::before, .tbb *::after { box-sizing: border-box; }

html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  margin: 0;
  background: var(--tbb-bg);
  color: var(--tbb-text);
  font-family: var(--tbb-font);
  font-size: 17px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

.tbb a { color: var(--tbb-accent); text-decoration: none; }
.tbb a:hover { text-decoration: underline; text-underline-offset: 3px; }
.tbb img { max-width: 100%; height: auto; }
.tbb ::selection { background: var(--tbb-accent); color: var(--tbb-accent-ink); }
.tbb :focus-visible { outline: 2px solid var(--tbb-accent); outline-offset: 3px; border-radius: 4px; }

.tbb h1, .tbb h2, .tbb h3, .tbb h4 {
  font-family: var(--tbb-font);
  font-weight: 700;
  line-height: 1.08;
  letter-spacing: -0.02em;
  margin: 0 0 0.5em;
  color: var(--tbb-text);
}
.tbb h1 { font-size: clamp(2.6rem, 7vw, 5.4rem); letter-spacing: -0.035em; }
.tbb h2 { font-size: clamp(2rem, 4.4vw, 3.2rem); }
.tbb h3 { font-size: 1.3rem; letter-spacing: -0.01em; }
.tbb p { margin: 0 0 1em; }

.tbb-wrap { width: 100%; max-width: var(--tbb-wrap); margin: 0 auto; padding: 0 var(--tbb-gutter); }
.tbb-section { padding: var(--tbb-section) 0; position: relative; scroll-margin-top: 72px; }
.tbb-section--alt { background: var(--tbb-bg-2); border-top: 1px solid var(--tbb-line); border-bottom: 1px solid var(--tbb-line); }

.tbb-kicker {
  font-family: var(--tbb-mono);
  font-size: 0.8rem;
  letter-spacing: 0.04em;
  color: var(--tbb-accent);
  margin: 0 0 1.25rem;
  display: block;
}
.tbb-kicker::before { content: "//"; color: var(--tbb-muted); margin-right: .6em; }
.tbb-lede { font-size: clamp(1.05rem, 1.6vw, 1.25rem); color: var(--tbb-muted); max-width: 60ch; }
.tbb-muted { color: var(--tbb-muted); }
.tbb-mono { font-family: var(--tbb-mono); }
.tbb-hl { color: var(--tbb-accent); }

/* ---------- wordmark ---------- */
.tbb-wordmark {
  font-family: var(--tbb-mono);
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: -0.02em;
  color: var(--tbb-text);
  display: inline-flex;
  align-items: baseline;
  white-space: nowrap;
}
.tbb-wordmark:hover { text-decoration: none !important; }
.tbb-wordmark .wm-tech { color: var(--tbb-accent); }
.tbb-wordmark .wm-by { color: var(--tbb-muted); font-weight: 400; }
.tbb-wordmark .wm-cursor {
  display: inline-block;
  width: 0.55em;
  height: 0.95em;
  margin-left: 0.12em;
  background: var(--tbb-accent);
  transform: translateY(0.12em);
  animation: tbb-blink 1.1s steps(1) infinite;
}
@keyframes tbb-blink { 50% { opacity: 0; } }
@media (prefers-reduced-motion: reduce) { .tbb-wordmark .wm-cursor { animation: none; } }

/* ---------- buttons ---------- */
.tbb-btn, .tbb input[type="submit"].tbb-btn, .tbb button.tbb-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.6em;
  font-family: var(--tbb-mono);
  font-size: 0.92rem;
  font-weight: 600;
  padding: 0.95em 1.4em;
  border-radius: 999px;
  border: 1px solid var(--tbb-accent);
  background: var(--tbb-accent);
  color: var(--tbb-accent-ink) !important;
  cursor: pointer;
  transition: transform .15s ease, box-shadow .15s ease, background .15s ease;
  text-decoration: none !important;
}
.tbb-btn:hover { transform: translateY(-2px); box-shadow: 0 10px 30px -10px rgba(200, 255, 46, 0.55); }
.tbb-btn--ghost { background: transparent; color: var(--tbb-text) !important; border-color: var(--tbb-line); }
.tbb-btn--ghost:hover { border-color: var(--tbb-accent); box-shadow: none; }
.tbb-btn[disabled] { opacity: .6; cursor: progress; transform: none; }

/* ---------- header ---------- */
.tbb-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(10, 13, 18, 0.82);
  backdrop-filter: saturate(160%) blur(12px);
  -webkit-backdrop-filter: saturate(160%) blur(12px);
  border-bottom: 1px solid transparent;
  transition: border-color .2s ease;
}
.tbb-header.is-scrolled { border-bottom-color: var(--tbb-line); }
.tbb-header__inner { display: flex; align-items: center; justify-content: space-between; height: 72px; gap: 24px; }

.tbb-nav { display: flex; align-items: center; gap: 6px; }
.tbb-nav ul { list-style: none; margin: 0; padding: 0; display: flex; gap: 6px; align-items: center; }
.tbb-nav li { position: relative; }
.tbb-nav a, .tbb-nav span.tbb-nav__label {
  display: block;
  font-family: var(--tbb-mono);
  font-size: 0.86rem;
  color: var(--tbb-muted);
  padding: 0.5em 0.85em;
  border-radius: 999px;
  transition: color .15s ease, background .15s ease;
}
.tbb-nav a:hover, .tbb-nav li.active > a { color: var(--tbb-text); background: var(--tbb-panel); text-decoration: none; }
.tbb-nav li.active > a { color: var(--tbb-accent); }
.tbb-nav .tbb-nav__cta a { color: var(--tbb-accent-ink); background: var(--tbb-accent); }
.tbb-nav .tbb-nav__cta a:hover { color: var(--tbb-accent-ink); background: var(--tbb-accent); filter: brightness(1.08); }

/* sub-menus (DNN multi-level) */
.tbb-nav ul ul {
  position: absolute; top: 100%; left: 0; min-width: 210px;
  flex-direction: column; align-items: stretch; gap: 0;
  background: var(--tbb-panel); border: 1px solid var(--tbb-line); border-radius: var(--tbb-radius-sm);
  padding: 6px; opacity: 0; visibility: hidden; transform: translateY(6px);
  transition: opacity .15s ease, transform .15s ease, visibility .15s;
}
.tbb-nav li:hover > ul, .tbb-nav li:focus-within > ul { opacity: 1; visibility: visible; transform: none; }
.tbb-nav ul ul a { border-radius: 6px; }

.tbb-nav-toggle {
  display: none;
  background: transparent;
  border: 1px solid var(--tbb-line);
  color: var(--tbb-text);
  border-radius: 10px;
  width: 44px; height: 44px;
  cursor: pointer;
  align-items: center; justify-content: center;
}
.tbb-nav-toggle span, .tbb-nav-toggle span::before, .tbb-nav-toggle span::after {
  content: ""; display: block; width: 18px; height: 2px; background: currentColor; position: relative; transition: transform .2s ease, background .2s ease;
}
.tbb-nav-toggle span::before { position: absolute; top: -6px; }
.tbb-nav-toggle span::after { position: absolute; top: 6px; }
.tbb-header.nav-open .tbb-nav-toggle span { background: transparent; }
.tbb-header.nav-open .tbb-nav-toggle span::before { transform: translateY(6px) rotate(45deg); }
.tbb-header.nav-open .tbb-nav-toggle span::after { transform: translateY(-6px) rotate(-45deg); }

@media (max-width: 860px) {
  .tbb-nav-toggle { display: inline-flex; }
  .tbb-nav {
    position: absolute; left: 0; right: 0; top: 72px;
    background: var(--tbb-bg); border-bottom: 1px solid var(--tbb-line);
    padding: 12px var(--tbb-gutter) 24px;
    display: none; flex-direction: column; align-items: stretch;
  }
  .tbb-header.nav-open .tbb-nav { display: flex; }
  .tbb-nav ul { flex-direction: column; align-items: stretch; gap: 4px; }
  .tbb-nav a, .tbb-nav span.tbb-nav__label { font-size: 1rem; padding: 0.8em 1em; }
  .tbb-nav ul ul { position: static; opacity: 1; visibility: visible; transform: none; border: 0; background: transparent; padding: 0 0 0 16px; }
}

/* ---------- hero ---------- */
.tbb-hero { padding: clamp(56px, 9vw, 120px) 0 var(--tbb-section); position: relative; overflow: hidden; }
.tbb-hero::before {
  /* faint grid, like a competition platform floor plan */
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background-image:
    linear-gradient(var(--tbb-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--tbb-line) 1px, transparent 1px);
  background-size: 56px 56px;
  opacity: .35;
  -webkit-mask-image: radial-gradient(ellipse 80% 70% at 70% 30%, #000 20%, transparent 75%);
          mask-image: radial-gradient(ellipse 80% 70% at 70% 30%, #000 20%, transparent 75%);
}
.tbb-hero__grid { position: relative; display: grid; grid-template-columns: 1.25fr 1fr; gap: clamp(32px, 5vw, 72px); align-items: center; }
.tbb-hero h1 { text-transform: lowercase; margin-bottom: 0.35em; }
.tbb-hero h1 em { font-style: normal; color: var(--tbb-accent); }
.tbb-hero__actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 2rem; }
@media (max-width: 920px) { .tbb-hero__grid { grid-template-columns: 1fr; } }

/* terminal card */
.tbb-term {
  background: var(--tbb-panel);
  border: 1px solid var(--tbb-line);
  border-radius: var(--tbb-radius);
  box-shadow: 0 30px 80px -30px rgba(0,0,0,.8), 0 0 0 1px rgba(255,255,255,.02) inset;
  font-family: var(--tbb-mono);
  font-size: 0.86rem;
  overflow: hidden;
}
.tbb-term__bar { display: flex; align-items: center; gap: 8px; padding: 12px 16px; border-bottom: 1px solid var(--tbb-line); background: var(--tbb-panel-2); }
.tbb-term__bar i { width: 10px; height: 10px; border-radius: 50%; background: var(--tbb-line); display: block; }
.tbb-term__bar i:first-child { background: var(--tbb-accent); }
.tbb-term__bar span { margin-left: auto; color: var(--tbb-muted); font-size: .75rem; }
.tbb-term__body { padding: 20px 20px 22px; line-height: 1.85; overflow-x: auto; }
.tbb-term__body .p { color: var(--tbb-accent); }
.tbb-term__body .k { color: var(--tbb-muted); }
.tbb-term__body .v { color: var(--tbb-text); }
.tbb-term__body .ok { color: var(--tbb-accent); }
.tbb-term__row { display: flex; gap: .5ch; white-space: nowrap; }
.tbb-term__body .dots { flex: 1; overflow: hidden; color: var(--tbb-line); }
.tbb-term__body .dots::before { content: "................................................"; }
.tbb-term__caret { display: inline-block; width: .6em; height: 1.1em; background: var(--tbb-accent); vertical-align: -0.2em; animation: tbb-blink 1.1s steps(1) infinite; }

/* ---------- section heads ---------- */
.tbb-head { display: grid; grid-template-columns: 1fr 1fr; gap: 24px 64px; align-items: end; margin-bottom: clamp(36px, 5vw, 64px); }
.tbb-head h2 { margin: 0; text-transform: lowercase; }
.tbb-head p { margin: 0; color: var(--tbb-muted); }
@media (max-width: 820px) { .tbb-head { grid-template-columns: 1fr; } }

/* ---------- cards ---------- */
.tbb-cards { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1px; background: var(--tbb-line); border: 1px solid var(--tbb-line); border-radius: var(--tbb-radius); overflow: hidden; }
.tbb-card { background: var(--tbb-bg); padding: clamp(24px, 3.4vw, 40px); position: relative; transition: background .2s ease; }
.tbb-section--alt .tbb-card { background: var(--tbb-bg-2); }
.tbb-card:hover { background: var(--tbb-panel); }
.tbb-card__num { font-family: var(--tbb-mono); font-size: .78rem; color: var(--tbb-accent); display: block; margin-bottom: 2.2rem; }
.tbb-card h3 { margin-bottom: .55em; }
.tbb-card p { color: var(--tbb-muted); margin: 0; }
.tbb-card ul.tbb-tags { margin-top: 1.4rem; }
@media (max-width: 720px) { .tbb-cards { grid-template-columns: 1fr; } }

.tbb-tags { list-style: none; padding: 0; margin: 0; display: flex; flex-wrap: wrap; gap: 8px; }
.tbb-tags li {
  font-family: var(--tbb-mono); font-size: .74rem; color: var(--tbb-text);
  border: 1px solid var(--tbb-line); border-radius: 999px; padding: .3em .8em;
}

/* ---------- sport tech ---------- */
.tbb-sport { display: grid; grid-template-columns: 1fr 1.1fr; gap: clamp(32px, 6vw, 88px); align-items: start; }
.tbb-sport h2 { text-transform: lowercase; }
.tbb-sport__list { list-style: none; margin: 0; padding: 0; border-top: 1px solid var(--tbb-line); }
.tbb-sport__list li { display: grid; grid-template-columns: 56px 1fr; gap: 16px; padding: 22px 0; border-bottom: 1px solid var(--tbb-line); }
.tbb-sport__list .ico {
  width: 44px; height: 44px; border-radius: 10px; display: grid; place-items: center;
  background: var(--tbb-accent-soft); color: var(--tbb-accent);
}
.tbb-sport__list .ico svg { width: 22px; height: 22px; }
.tbb-sport__list .ico { font-family: var(--tbb-mono); font-size: .8rem; font-weight: 700; }
.tbb-sport__list h3 { font-size: 1.1rem; margin: 0 0 .25em; }
.tbb-sport__list p { margin: 0; color: var(--tbb-muted); font-size: .97rem; }
.tbb-trust {
  margin-top: 2rem; padding: 20px 22px; border: 1px dashed var(--tbb-line); border-radius: var(--tbb-radius-sm);
  font-family: var(--tbb-mono); font-size: .85rem; color: var(--tbb-muted);
}
.tbb-trust strong { color: var(--tbb-text); font-weight: 600; }
@media (max-width: 920px) { .tbb-sport { grid-template-columns: 1fr; } }

/* ---------- approach ---------- */
.tbb-steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; counter-reset: step; }
.tbb-step { border-top: 2px solid var(--tbb-line); padding-top: 22px; position: relative; }
.tbb-step::before {
  counter-increment: step; content: "0" counter(step);
  font-family: var(--tbb-mono); font-size: .8rem; color: var(--tbb-accent); display: block; margin-bottom: 1rem;
}
.tbb-step::after { content: ""; position: absolute; top: -2px; left: 0; width: 48px; height: 2px; background: var(--tbb-accent); }
.tbb-step p { color: var(--tbb-muted); margin: 0; }
@media (max-width: 820px) { .tbb-steps { grid-template-columns: 1fr; } }

/* ---------- about ---------- */
.tbb-about { display: grid; grid-template-columns: 1.1fr 1fr; gap: clamp(32px, 6vw, 88px); align-items: center; }
.tbb-about h2 { text-transform: lowercase; }
.tbb-about__side {
  background: var(--tbb-panel); border: 1px solid var(--tbb-line); border-radius: var(--tbb-radius);
  padding: clamp(24px, 3vw, 36px);
}
.tbb-about__side h3 { font-size: 1.05rem; }
.tbb-about__side p { color: var(--tbb-muted); }
.tbb-facts { list-style: none; margin: 0 0 1.5rem; padding: 0; font-family: var(--tbb-mono); font-size: .86rem; }
.tbb-facts li { display: flex; justify-content: space-between; gap: 16px; padding: 10px 0; border-bottom: 1px solid var(--tbb-line); }
.tbb-facts li span:first-child { color: var(--tbb-muted); }
@media (max-width: 920px) { .tbb-about { grid-template-columns: 1fr; } }

/* ---------- contact / forms ---------- */
.tbb-contact { display: grid; grid-template-columns: 1fr 1.25fr; gap: clamp(32px, 6vw, 88px); align-items: start; }
.tbb-contact h2 { text-transform: lowercase; }
@media (max-width: 920px) { .tbb-contact { grid-template-columns: 1fr; } }

.tbb-form { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.tbb-form .full { grid-column: 1 / -1; }
.tbb-field label { display: block; font-family: var(--tbb-mono); font-size: .78rem; color: var(--tbb-muted); margin-bottom: 8px; }
.tbb-field label .opt { color: var(--tbb-line); }
.tbb-form input[type="text"], .tbb-form input[type="email"], .tbb-form select, .tbb-form textarea {
  width: 100%;
  font: inherit; font-size: 1rem; color: var(--tbb-text);
  background: var(--tbb-panel); border: 1px solid var(--tbb-line); border-radius: var(--tbb-radius-sm);
  padding: 14px 16px;
  transition: border-color .15s ease, box-shadow .15s ease;
  -webkit-appearance: none; appearance: none;
}
.tbb-form select {
  background-image: linear-gradient(45deg, transparent 50%, var(--tbb-muted) 50%), linear-gradient(135deg, var(--tbb-muted) 50%, transparent 50%);
  background-position: calc(100% - 22px) 55%, calc(100% - 16px) 55%;
  background-size: 6px 6px; background-repeat: no-repeat; padding-right: 44px;
}
.tbb-form textarea { min-height: 160px; resize: vertical; }
.tbb-form input:focus, .tbb-form select:focus, .tbb-form textarea:focus { outline: none; border-color: var(--tbb-accent); box-shadow: 0 0 0 3px var(--tbb-accent-soft); }
.tbb-hp { position: absolute !important; left: -9999px !important; width: 1px; height: 1px; overflow: hidden; }
.tbb-form__foot { display: flex; align-items: center; gap: 16px; flex-wrap: wrap; }
.tbb-form__status { font-family: var(--tbb-mono); font-size: .85rem; margin: 0; }
.tbb-form__status.is-ok { color: var(--tbb-accent); }
.tbb-form__status.is-err { color: var(--tbb-danger); }
@media (max-width: 600px) { .tbb-form { grid-template-columns: 1fr; } }

/* ---------- footer ---------- */
.tbb-footer { border-top: 1px solid var(--tbb-line); padding: 48px 0 40px; font-size: .92rem; }
.tbb-footer__grid { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; gap: 24px; }
.tbb-footer p, .tbb-footer span { color: var(--tbb-muted); margin: 0; }
.tbb-footer a { color: var(--tbb-text); }
.tbb-footer a:hover { color: var(--tbb-accent); }
.tbb-footer__links { display: flex; flex-wrap: wrap; gap: 20px; font-family: var(--tbb-mono); font-size: .82rem; }
.tbb-sister { display: inline-flex; align-items: center; gap: 10px; }
.tbb-sister b { color: var(--tbb-text); font-weight: 600; }

/* ---------- reveal on scroll ---------- */
.tbb-js .tbb-reveal { opacity: 0; transform: translateY(18px); transition: opacity .6s ease, transform .6s ease; }
.tbb-js .tbb-reveal.is-in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) { .tbb-js .tbb-reveal { opacity: 1; transform: none; transition: none; } }

/* ---------- long-form text (blog / notes / inner pages) ---------- */
.tbb-prose { max-width: 72ch; }
.tbb-prose h1 { font-size: clamp(2.2rem, 5vw, 3.4rem); }
.tbb-prose h2 { font-size: 1.7rem; margin-top: 2.2em; }
.tbb-prose h3 { font-size: 1.25rem; margin-top: 1.8em; }
.tbb-prose p, .tbb-prose li { color: #c9d2dd; }
.tbb-prose ul, .tbb-prose ol { padding-left: 1.3em; margin: 0 0 1.2em; }
.tbb-prose li { margin: .35em 0; }
.tbb-prose li::marker { color: var(--tbb-accent); }
.tbb-prose blockquote { margin: 1.6em 0; padding: .4em 0 .4em 1.2em; border-left: 3px solid var(--tbb-accent); color: var(--tbb-text); font-size: 1.1rem; }
.tbb-prose hr { border: 0; border-top: 1px solid var(--tbb-line); margin: 2.5em 0; }
.tbb-prose table { width: 100%; border-collapse: collapse; margin: 1.5em 0; font-size: .95rem; display: block; overflow-x: auto; }
.tbb-prose th, .tbb-prose td { border-bottom: 1px solid var(--tbb-line); padding: 10px 12px; text-align: left; }
.tbb-prose th { font-family: var(--tbb-mono); font-size: .8rem; color: var(--tbb-muted); font-weight: 600; }
.tbb-prose img { border-radius: var(--tbb-radius-sm); border: 1px solid var(--tbb-line); }
.tbb code, .tbb kbd {
  font-family: var(--tbb-mono); font-size: .88em;
  background: var(--tbb-panel); border: 1px solid var(--tbb-line); border-radius: 6px; padding: .1em .4em; color: var(--tbb-accent);
}
.tbb pre {
  font-family: var(--tbb-mono); font-size: .88rem; line-height: 1.7;
  background: var(--tbb-panel); border: 1px solid var(--tbb-line); border-radius: var(--tbb-radius-sm);
  padding: 18px 20px; overflow-x: auto; margin: 1.5em 0; color: var(--tbb-text);
}
.tbb pre code { background: none; border: 0; padding: 0; color: inherit; font-size: inherit; }
.tbb-meta { font-family: var(--tbb-mono); font-size: .8rem; color: var(--tbb-muted); display: flex; flex-wrap: wrap; gap: 6px 16px; margin-bottom: 1.5rem; }

/* ---------- skip link ---------- */
.tbb-skip { position: absolute; left: -9999px; top: 12px; z-index: 100; background: var(--tbb-accent); color: var(--tbb-accent-ink) !important; padding: 10px 16px; border-radius: 8px; font-family: var(--tbb-mono); }
.tbb-skip:focus { left: 16px; }

/* ---------- product (myPlatform) ---------- */
.tbb-product { display: grid; grid-template-columns: 1fr 1.05fr; gap: clamp(32px, 6vw, 88px); align-items: center; }
.tbb-product h2 { text-transform: lowercase; }
@media (max-width: 920px) { .tbb-product { grid-template-columns: 1fr; } }

.tbb-features { list-style: none; margin: 2rem 0 0; padding: 0; border-top: 1px solid var(--tbb-line); }
.tbb-features li { display: grid; grid-template-columns: 112px 1fr; gap: 16px; align-items: start; padding: 18px 0; border-bottom: 1px solid var(--tbb-line); }
.tbb-features h3 { font-size: 1.05rem; margin: 0 0 .2em; }
.tbb-features p { margin: 0; color: var(--tbb-muted); font-size: .95rem; }
@media (max-width: 480px) { .tbb-features li { grid-template-columns: 1fr; gap: 8px; } }

.tbb-chip {
  justify-self: start; display: inline-flex; align-items: center; gap: .5em;
  font-family: var(--tbb-mono); font-size: .72rem; font-weight: 600;
  color: var(--tbb-accent); background: var(--tbb-accent-soft);
  border-radius: 999px; padding: .3em .75em; margin-top: .2em; white-space: nowrap;
}
.tbb-chip::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: currentColor; }
.tbb-chip--soon { color: var(--tbb-cyan); background: rgba(58, 208, 255, .1); }

/* illustrative app window */
.tbb-app {
  background: var(--tbb-panel); border: 1px solid var(--tbb-line); border-radius: var(--tbb-radius);
  box-shadow: 0 30px 80px -30px rgba(0,0,0,.8); overflow: hidden; font-size: .85rem;
}
.tbb-app__bar { display: flex; align-items: center; gap: 8px; padding: 12px 16px; border-bottom: 1px solid var(--tbb-line); background: var(--tbb-panel-2); }
.tbb-app__bar i { width: 10px; height: 10px; border-radius: 50%; background: var(--tbb-line); display: block; }
.tbb-app__bar i:first-child { background: var(--tbb-accent); }
.tbb-app__bar span { margin-left: auto; font-family: var(--tbb-mono); color: var(--tbb-muted); font-size: .75rem; }
.tbb-app__body { display: grid; grid-template-columns: 140px 1fr; min-height: 300px; }
.tbb-app__side { border-right: 1px solid var(--tbb-line); padding: 14px 10px; display: flex; flex-direction: column; gap: 2px; font-family: var(--tbb-mono); font-size: .76rem; }
.tbb-app__side span { padding: 8px 10px; border-radius: 6px; color: var(--tbb-muted); }
.tbb-app__side span.is-on { background: var(--tbb-accent-soft); color: var(--tbb-accent); }
.tbb-app__side span { white-space: nowrap; }
.tbb-app__side span.soon { color: var(--tbb-muted); opacity: .55; }
.tbb-app__side span.soon::after { content: ""; display: inline-block; width: 6px; height: 6px; border-radius: 50%; background: var(--tbb-cyan); margin-left: 7px; vertical-align: middle; }
.tbb-app__main { padding: 18px 20px; overflow-x: auto; }
.tbb-app__head { display: flex; justify-content: space-between; align-items: baseline; gap: 12px; margin-bottom: 12px; }
.tbb-app__head b { font-weight: 600; }
.tbb-app__head em { font-style: normal; font-family: var(--tbb-mono); font-size: .72rem; color: var(--tbb-muted); }
.tbb-app table { width: 100%; border-collapse: collapse; }
.tbb-app th { text-align: left; font-family: var(--tbb-mono); font-weight: 400; font-size: .7rem; color: var(--tbb-muted); padding: 8px 6px; border-bottom: 1px solid var(--tbb-line); }
.tbb-app td { padding: 10px 6px; border-bottom: 1px solid var(--tbb-line); white-space: nowrap; }
.tbb-app tr:last-child td { border-bottom: 0; }
.tbb-app td:first-child { font-family: var(--tbb-mono); color: var(--tbb-accent); width: 28px; }
.tbb-app td.n { font-family: var(--tbb-mono); color: var(--tbb-line); letter-spacing: 2px; text-align: right; }
.tbb-app tbody tr:first-child td.n { color: var(--tbb-accent); }
@media (max-width: 520px) { .tbb-app__body { grid-template-columns: 1fr; } .tbb-app__side { flex-direction: row; flex-wrap: wrap; border-right: 0; border-bottom: 1px solid var(--tbb-line); } }

/* products section extras */
.tbb-product { margin-bottom: clamp(48px, 7vw, 88px); }
.tbb .tbb-product__name { margin-bottom: .4em; font-size: clamp(2.2rem, 5vw, 3.6rem); text-transform: lowercase; letter-spacing: -0.03em; }
.tbb-cards--3 { grid-template-columns: repeat(3, 1fr); }
.tbb-cards--3 .tbb-card .tbb-chip { margin: 0 0 1.6rem; }
.tbb-chip--past { color: var(--tbb-muted); background: rgba(141, 153, 170, .12); }
.tbb-center { text-align: center; margin-top: clamp(32px, 5vw, 56px); }
@media (max-width: 920px) { .tbb-cards--3 { grid-template-columns: 1fr; } }
.tbb-form textarea::placeholder, .tbb-form input::placeholder { color: var(--tbb-muted); opacity: .6; }

/* ==========================================================================
   Inner pages (shared by static subpages and DNN Inner/Blog/Contact layouts)
   ========================================================================== */
/* page head on inner pages */
.tbb-page-head { padding: clamp(48px, 7vw, 88px) 0 clamp(28px, 4vw, 44px); border-bottom: 1px solid var(--tbb-line); position: relative; overflow: hidden; }
.tbb-page-head::before {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background-image: linear-gradient(var(--tbb-line) 1px, transparent 1px), linear-gradient(90deg, var(--tbb-line) 1px, transparent 1px);
  background-size: 56px 56px; opacity: .25;
  -webkit-mask-image: radial-gradient(ellipse 60% 90% at 85% 0%, #000 10%, transparent 70%);
          mask-image: radial-gradient(ellipse 60% 90% at 85% 0%, #000 10%, transparent 70%);
}
.tbb-page-head .tbb-wrap { position: relative; }
.tbb-page-head h1 { font-size: clamp(2.2rem, 5.5vw, 4rem); text-transform: lowercase; margin: 0; }
.tbb-crumbs { font-family: var(--tbb-mono); font-size: .8rem; color: var(--tbb-muted); margin-bottom: 1.2rem; }
.tbb-crumbs a, .tbb-crumbs .tbb-crumb { color: var(--tbb-muted); }
.tbb-crumbs a:hover { color: var(--tbb-accent); }
.tbb-crumbs .sep { color: var(--tbb-line); margin: 0 .6em; }
.tbb-crumbs::before { content: "~/ "; color: var(--tbb-accent); }
.tbb-crumbs ol, .tbb-crumbs ul { list-style: none; margin: 0; padding: 0; display: inline-flex; flex-wrap: wrap; gap: 0 .2em; }
.tbb-crumbs li { display: inline; }

.tbb-section--tight { padding: clamp(40px, 6vw, 72px) 0; }


.tbb-page-head .tbb-kicker { margin-bottom: .9rem; }
.tbb-page-head .tbb-lede { margin: 1.2rem 0 0; }
.tbb-page-head .tbb-hero__actions { margin-top: 1.6rem; }

/* h1 that carries the kicker line inside it (keywords stay in the heading) */
.tbb h1 .tbb-kicker { display: block; font-size: 0.8rem; font-weight: 400; letter-spacing: 0.04em; line-height: 1.6; text-transform: none; }

/* text link with arrow */
.tbb-more { font-family: var(--tbb-mono); font-size: .88rem; display: inline-flex; gap: .5em; margin-top: 1.2rem; }
.tbb-more::after { content: "\2192"; transition: transform .15s ease; }
.tbb-more:hover { text-decoration: none; }
.tbb-more:hover::after { transform: translateX(3px); }
.tbb-card .tbb-more { margin-top: 1.4rem; }

/* definition / answer-first block */
.tbb-define {
  border-left: 3px solid var(--tbb-accent); padding: 4px 0 4px 20px; margin: 0 0 clamp(36px, 5vw, 56px);
  font-size: clamp(1.1rem, 1.8vw, 1.3rem); max-width: 68ch; color: var(--tbb-text);
}
.tbb-define p { margin: 0; }

/* two-column text blocks on subpages */
.tbb-split { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(28px, 5vw, 72px); }
.tbb-split h2 { text-transform: lowercase; }
.tbb-split ul { margin: 0; padding-left: 1.2em; color: var(--tbb-muted); }
.tbb-split li { margin: .45em 0; }
.tbb-split li::marker { color: var(--tbb-accent); }
@media (max-width: 820px) { .tbb-split { grid-template-columns: 1fr; } }

/* service detail blocks */
.tbb-svc { display: grid; grid-template-columns: 0.9fr 1.1fr; gap: clamp(24px, 5vw, 72px); padding: clamp(32px, 4vw, 48px) 0; border-top: 1px solid var(--tbb-line); }
.tbb-svc:first-of-type { border-top: 0; padding-top: 0; }
.tbb-svc h2 { font-size: clamp(1.6rem, 3vw, 2.2rem); margin: .3em 0 0; }
.tbb-svc p { color: var(--tbb-muted); }
.tbb-svc ul { margin: 0 0 1em; padding-left: 1.2em; color: var(--tbb-text); }
.tbb-svc li { margin: .4em 0; }
.tbb-svc li::marker { color: var(--tbb-accent); }
@media (max-width: 820px) { .tbb-svc { grid-template-columns: 1fr; } }

/* FAQ */
.tbb-faq { max-width: 860px; border-top: 1px solid var(--tbb-line); }
.tbb-faq details { border-bottom: 1px solid var(--tbb-line); }
.tbb-faq summary {
  list-style: none; cursor: pointer; padding: 22px 44px 22px 0; position: relative;
  font-size: 1.12rem; font-weight: 500;
}
.tbb-faq summary::-webkit-details-marker { display: none; }
.tbb-faq summary::after {
  content: "+"; position: absolute; right: 4px; top: 50%; transform: translateY(-50%);
  font-family: var(--tbb-mono); color: var(--tbb-accent); font-size: 1.3rem; transition: transform .2s ease;
}
.tbb-faq details[open] summary::after { transform: translateY(-50%) rotate(45deg); }
.tbb-faq summary:hover { color: var(--tbb-accent); }
.tbb-faq .tbb-faq__a { padding: 0 0 22px; color: var(--tbb-muted); max-width: 70ch; }
.tbb-faq .tbb-faq__a p:last-child { margin-bottom: 0; }

/* field hint contrast */
.tbb-field label .opt { color: var(--tbb-muted); opacity: .7; }
.tbb-app__tabs { display: flex; gap: 6px; margin-bottom: 14px; font-family: var(--tbb-mono); font-size: .72rem; }
.tbb-app__tabs span { padding: 5px 10px; border: 1px solid var(--tbb-line); border-radius: 999px; color: var(--tbb-muted); }
.tbb-app__tabs span.is-on { border-color: var(--tbb-accent); color: var(--tbb-accent); }

/* career timeline */
.tbb-timeline { list-style: none; margin: 0; padding: 0; border-left: 2px solid var(--tbb-line); max-width: 860px; }
.tbb-timeline li { display: grid; grid-template-columns: 150px 1fr; gap: 20px; padding: 0 0 28px 28px; position: relative; }
.tbb-timeline li::before { content: ""; position: absolute; left: -7px; top: 6px; width: 12px; height: 12px; border-radius: 50%; background: var(--tbb-bg-2); border: 2px solid var(--tbb-accent); }
.tbb-timeline li:first-child::before { background: var(--tbb-accent); }
.tbb-timeline__when { font-family: var(--tbb-mono); font-size: .82rem; color: var(--tbb-accent); padding-top: 3px; }
.tbb-timeline h3 { font-size: 1.1rem; margin: 0 0 .2em; }
.tbb-timeline p { margin: 0; color: var(--tbb-muted); }
@media (max-width: 600px) { .tbb-timeline li { grid-template-columns: 1fr; gap: 4px; } }

.tbb-quote { margin: 2rem 0 0; padding: .2em 0 .2em 1.1em; border-left: 3px solid var(--tbb-accent); font-size: 1.3rem; font-weight: 500; color: var(--tbb-text); }
.tbb #contact { border-top: 1px solid var(--tbb-line); }
.tbb-define strong { color: var(--tbb-accent); font-weight: 600; }
/* TechByBilbo containers (DNN loads this automatically) */
.tbb-c { position: relative; margin-bottom: 40px; }
.tbb-c:last-child { margin-bottom: 0; }

.tbb-c__title { font-size: clamp(1.8rem, 3.6vw, 2.6rem); text-transform: lowercase; margin: 0 0 .7em; }
.tbb-c__title::before {
  content: ""; display: block; width: 40px; height: 2px; background: var(--tbb-accent); margin-bottom: 1.1rem;
}
.tbb-c__titletext { color: inherit; font: inherit; }

.tbb-c--card {
  background: var(--tbb-panel); border: 1px solid var(--tbb-line); border-radius: var(--tbb-radius);
  padding: clamp(20px, 3vw, 28px);
}
.tbb-c__cardtitle { font-family: var(--tbb-mono); font-size: .85rem; font-weight: 600; color: var(--tbb-accent); margin: 0 0 1rem; letter-spacing: .02em; }
.tbb-c--card .tbb-c__body { color: var(--tbb-muted); font-size: .97rem; }
.tbb-c--card ul { list-style: none; margin: 0; padding: 0; }
.tbb-c--card li { padding: 8px 0; border-bottom: 1px solid var(--tbb-line); }
.tbb-c--card li:last-child { border-bottom: 0; }

/* ==========================================================================
   Oqtane-only additions (appended to the core in Client/wwwroot/theme.css)
   ========================================================================== */

/* Bootstrap loads first for Oqtane's admin UI; keep the site's own look on top of it */
body { margin: 0; background: var(--tbb-bg); color: var(--tbb-text); font-family: var(--tbb-font); }
.tbb-skin { min-height: 100vh; display: flex; flex-direction: column; }
.tbb-skin > main { flex: 1; }
.tbb a:not(.tbb-btn):not(.btn) { text-decoration: none; }

/* menu rendered by TbbMenu */
.tbb-nav__menu, .tbb-nav__extra { display: flex; }
@media (max-width: 860px) { .tbb-nav__menu, .tbb-nav__extra { flex-direction: column; } }

/* Oqtane control panel (only rendered for signed-in editors) */
.tbb-oq-controls:empty { display: none; }
.tbb-oq-controls { margin-left: 8px; display: flex; align-items: center; }
.tbb-oq-controls .btn { border-radius: 999px; font-family: var(--tbb-mono); font-size: .78rem; }
@media (max-width: 860px) { .tbb-oq-controls { margin-left: auto; margin-right: 8px; } }

/* admin and edit screens: a light, normal-width panel so Bootstrap forms and tables stay readable */
.tbb-oq-adminarea {
  margin-top: 32px; margin-bottom: 48px; padding: clamp(20px, 3vw, 36px);
  background: #fff; color: #212529; border-radius: var(--tbb-radius);
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; font-size: 1rem;
}
.tbb-oq-adminarea a:not(.btn) { color: #0d6efd; }
.tbb-oq-adminarea h1, .tbb-oq-adminarea h2, .tbb-oq-adminarea h3,
.tbb-oq-adminarea h4, .tbb-oq-adminarea label { color: #212529; font-family: inherit; text-transform: none; letter-spacing: normal; }

/* edit mode: Oqtane outlines panes; keep the outline visible on the dark background */
.app-pane-admin-border { border-color: var(--tbb-line) !important; }
.app-pane-admin-title { color: var(--tbb-muted) !important; font-family: var(--tbb-mono); font-size: .75rem; }
.tbb-c { position: relative; }
.tbb-c > .app-moduleactions, .tbb-c .app-moduleactions { position: relative; z-index: 60; }

/* footer sign-in / profile links (Oqtane Login and UserProfile controls) */
.tbb-footer__user { display: inline-flex; gap: 14px; align-items: center; }
.tbb-footer__user .tbb-oq-link, .tbb-footer__user .btn {
  background: none; border: 0; padding: 0; color: var(--tbb-muted); font-family: var(--tbb-mono); font-size: .8rem;
}
.tbb-footer__user .tbb-oq-link:hover { color: var(--tbb-accent); }

/* Prose layout: content + optional sidebar (collapses when the sidebar pane is empty) */
.tbb-section--tight { padding: clamp(40px, 6vw, 72px) 0; }
.tbb-layout { display: grid; grid-template-columns: minmax(0, 1fr) 300px; gap: clamp(32px, 5vw, 64px); align-items: start; }
.tbb-layout--blog { grid-template-columns: minmax(0, 72ch) 280px; justify-content: space-between; }
.tbb-layout:has(> .tbb-side:empty) { grid-template-columns: minmax(0, 72ch); }
.tbb-side:empty { display: none; }
.tbb-side { position: sticky; top: 96px; }
@media (max-width: 920px) {
  .tbb-layout, .tbb-layout--blog { grid-template-columns: minmax(0, 1fr); }
  .tbb-side { position: static; }
}

/* Section container (editor-created content) */
.tbb-c--section .tbb-c__title { margin-bottom: .7em; }

/* Oqtane's control panel is a Bootstrap off-canvas panel rendered inside the header. A backdrop-filter on the
   header makes it the containing block for fixed elements, which trapped the panel inside the header, so
   Oqtane gets a solid header instead. */
.tbb-header, .tbb-header.is-scrolled { -webkit-backdrop-filter: none; backdrop-filter: none; background: rgba(10, 13, 18, 0.97); }

/* Oqtane admin UI (admin pages, dialogs, control panel): plain Bootstrap look. The site's own form styles are
   scoped to .tbb-form, so only text colour and headings need resetting here. */
.tbb .modal, .tbb .offcanvas, .tbb .dropdown-menu { color: #212529; font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; font-size: 1rem; }
.tbb .modal :is(h1, h2, h3, h4, h5, h6, label), .tbb .offcanvas :is(h1, h2, h3, h4, h5, h6, label) {
  color: #212529; font-family: inherit; text-transform: none; letter-spacing: normal;
}
.tbb .modal a:not(.btn), .tbb .offcanvas a:not(.btn), .tbb .dropdown-menu a { color: #0d6efd; }
.tbb .modal ::selection, .tbb .offcanvas ::selection { background: #b6d4fe; color: #212529; }

/* Oqtane system pages (login, register, reset, profile, search, privacy, terms, 404) */
.tbb-oq-system .tbb-oq-system__title { font-size: clamp(2rem, 5vw, 3.2rem); text-transform: lowercase; margin-bottom: .8em; }
.tbb-oq-system--narrow .tbb-wrap { max-width: 520px; }
.tbb-oq-system label, .tbb-oq-system .form-label { color: var(--tbb-muted); font-family: var(--tbb-mono); font-size: .8rem; }
.tbb-oq-system .form-control, .tbb-oq-system .form-select { border-radius: var(--tbb-radius-sm); padding: .7rem .9rem; }
.tbb-oq-system .btn { border-radius: 999px; font-family: var(--tbb-mono); font-weight: 600; padding: .65rem 1.3rem; }
.tbb-oq-system .btn-primary { background: var(--tbb-accent); border-color: var(--tbb-accent); color: var(--tbb-accent-ink); }
.tbb-oq-system .btn-primary:hover { filter: brightness(1.08); background: var(--tbb-accent); border-color: var(--tbb-accent); color: var(--tbb-accent-ink); }
.tbb-oq-system .btn-secondary { background: transparent; border-color: var(--tbb-line); color: var(--tbb-text); }
.tbb-oq-system .btn-secondary:hover { border-color: var(--tbb-accent); color: var(--tbb-text); background: transparent; }
.tbb-oq-system .alert { border-radius: var(--tbb-radius-sm); }