:root {
  --brand:#121212;
  --accent:#00e0ff;
  --accent-2:#ffd400;
}
body{background:#0b0b0b;color:#e9ecef}
.navbar{background:linear-gradient(90deg,#0b0b0b,#171717)}
.btn-accent{
  background:linear-gradient(90deg,var(--accent),var(--accent-2));
  color:#000;font-weight:700;border:none;
  box-shadow:0 10px 30px rgba(0,224,255,.25)
}
.btn-accent:hover{opacity:.95;transform:translateY(-1px)}
.hero{
  background:
    radial-gradient(1200px 600px at 80% -10%, rgba(0,224,255,.18), transparent 60%),
    radial-gradient(900px 500px at -10% 20%, rgba(255,212,0,.16), transparent 60%),
    linear-gradient(180deg, #0b0b0b 0%, #0f0f10 100%);
  padding: 6rem 0 3rem
}
.badge-soft{background:rgba(0,224,255,.1);border:1px solid rgba(0,224,255,.25);color:#8be9ff}
.card{background:#131416;border:1px solid #202226}
.card h5{color:#fff}
.muted{color:#b9c0c7}
a, a:hover{color:#8be9ff}
.footer{border-top:1px solid #202226}


.footer h5, .footer h6 {
  font-weight: 600;
}
.footer .bi {
  transition: transform 0.2s ease;
}
.footer .bi:hover {
  transform: scale(1.2);
}
.navbar .nav-link {
  font-size: 0.95rem;
  transition: color 0.2s ease;
}
.navbar .nav-link:hover {
  color: var(--accent);
}

/* Dark accordion overrides */
.accordion-dark .accordion-item {
  background-color: #131416;
  border: 1px solid #202226;
}

.accordion-dark .accordion-button {
  background-color: #131416;
  color: #e9ecef;
}

.accordion-dark .accordion-button:not(.collapsed) {
  color: var(--accent);
  background-color: #1a1c1f;
  box-shadow: none;
}

.accordion-dark .accordion-button:focus {
  box-shadow: none;
  border-color: var(--accent);
}

.accordion-dark .accordion-body {
  background-color: #1a1c1f;
  color: #b9c0c7;
}



/* Bootstrap 5.3 variable-based dark theme for accordion */
.accordion.accordion-dark {
  --bs-accordion-color: #e9ecef;
  --bs-accordion-bg: #131416;
  --bs-accordion-border-color: #202226;

  --bs-accordion-btn-color: #e9ecef;
  --bs-accordion-btn-bg: #131416;
  --bs-accordion-btn-icon: none;            /* use color vars instead of svg tint */
  --bs-accordion-btn-icon-width: 1.25rem;

  --bs-accordion-active-color: var(--accent);
  --bs-accordion-active-bg: #1a1c1f;

  --bs-accordion-btn-focus-box-shadow: none;
  --bs-accordion-btn-focus-border-color: var(--accent);

  --bs-accordion-icon-color: #b9c0c7;       /* caret color (collapsed) */
  --bs-accordion-icon-active-color: var(--accent); /* caret when open */
}

/* Ensure backgrounds/borders apply in all variants */
.accordion.accordion-dark .accordion-item {
  background-color: var(--bs-accordion-bg);
  border: 1px solid var(--bs-accordion-border-color);
}
.accordion.accordion-dark .accordion-button {
  background-color: var(--bs-accordion-btn-bg);
  color: var(--bs-accordion-btn-color);
  box-shadow: none;
}
.accordion.accordion-dark .accordion-button:not(.collapsed) {
  color: var(--bs-accordion-active-color);
  background-color: var(--bs-accordion-active-bg);
}

/* If you use .accordion-flush anywhere */
.accordion.accordion-dark.accordion-flush .accordion-item {
  border: 0; /* flush removes borders */
  background-color: var(--bs-accordion-bg);
}
.accordion.accordion-dark.accordion-flush .accordion-button {
  background-color: var(--bs-accordion-bg);
}

/* Body text inside */
.accordion.accordion-dark .accordion-body {
  background-color: #1a1c1f;
  color: #b9c0c7;
  border-top: 1px solid var(--bs-accordion-border-color);
}


/* Long-form typography on dark */
.prose-dark p { line-height: 1.7; color: #cfd6dc; }
.prose-dark ul { margin: 0 0 1rem 1.25rem; color: #cfd6dc; }
.prose-dark li { margin-bottom: .4rem; }
.prose-dark em { color: #e0e6eb; }
.prose-dark strong { color: #ffffff; }

/* Topic chips */
.chip, .chip-link {
  display: inline-block;
  padding: .35rem .6rem;
  border-radius: 999px;
  font-size: .85rem;
  border: 1px solid #202226;
  background: #131416;
  color: #e9ecef;
  text-decoration: none;
}
.chip-link:hover { border-color: var(--accent); color: #8be9ff; }