/* ═══════════════════════════════════════════════════════════════
   BaseFrame → Open Props Adapter
   Modern design-system showcase. Purple #6366f1 palette, frosted
   glass header (backdrop-filter), spring/elastic transitions,
   systematic shadow progression, fluid clamp() typography.
   All colors explicit hex — no CSS variables that break in dark mode.
   ═══════════════════════════════════════════════════════════════ */
:root {
  --bf-accent: #6366f1;
  --bf-bg: #f8f9fa;
  --bf-text: #343a40;
  --bf-text-soft: #868e96;
  --bf-border: #dee2e6;
  --bf-hover-bg: #e0e7ff;
  --bf-topbar-hover: #6366f1;
  --bf-mark-bg: #e0e7ff;
  --bf-mark-text: #6366f1;
  --bf-topbar-bg: #f3f2fe;
  --bf-topbar-border: #e4e3f2;
}
body.bf {
  font-family: "Inter", system-ui, sans-serif;
  background: #f8f9fa;
  color: #343a40;
  line-height: 1.65;
}

/* Header — frosted glass with backdrop-filter */
.bf-header {
  background: rgba(255,255,255,.72);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(222,226,230,.6);
  box-shadow: 0 1px 2px rgba(0,0,0,.04);
}
.bf-logo-label { color: #6366f1; font-weight: 800; }
.bf-logo-site { color: #343a40; font-weight: 600; }

/* Nav — pill-shaped active state with primary tint */
.bf-nav .nav-item > a,
.bf-nav .mod-menu__toggle-sub {
  color: #868e96;
  font-size: .875rem;
  font-weight: 500;
  border-radius: .5rem;
  transition: all .3s cubic-bezier(.34,1.56,.64,1);
}
.bf-nav .nav-item > a:hover,
.bf-nav .mod-menu__toggle-sub:hover {
  color: #343a40;
  background: #e0e7ff;
  transform: translateY(-1px);
}
.bf-nav .mod-menu__sub { border-radius: 1rem; border-color: #dee2e6; }
.bf-nav .mod-menu__sub .nav-item > a { color: #343a40; border-radius: .5rem; }
.bf-nav .mod-menu__sub .nav-item > a:hover { background: #e0e7ff; color: #6366f1; }
.bf-nav .nav-item.current > a,
.bf-nav .nav-item.active > a {
  color: #6366f1;
  background: #e0e7ff;
  font-weight: 600;
}
.bf-hamburger span { background: #343a40; }
@media (max-width: 768px) {
  .bf-nav { background: rgba(255,255,255,.95); backdrop-filter: blur(16px); }
}

/* Hero — gradient purple/indigo, vibrant */
.bf-hero {
  background: linear-gradient(135deg, #6366f1, #818cf8);
  color: #fff;
  padding: 5rem 0;
  text-align: center;
}
.bf-hero .title {
  color: #fff;
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 800;
}
.bf-hero .subtitle { color: rgba(255,255,255,.8); }

/* Blog grid */
.bf-blog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1.5rem;
}

/* Cards — systematic shadow progression, BOUNCY spring hover (Open Props signature) */
.bf-card {
  background: #fff;
  border-radius: 1rem;
  box-shadow: 0 1px 2px rgba(0,0,0,.05), 0 1px 3px rgba(0,0,0,.04);
  overflow: hidden;
  transition: box-shadow .5s cubic-bezier(.22,1.5,.36,1), transform .5s cubic-bezier(.22,1.5,.36,1);
  display: flex;
  flex-direction: column;
}
.bf-card:hover {
  box-shadow: 0 4px 8px rgba(0,0,0,.06), 0 12px 28px rgba(0,0,0,.08), 0 20px 44px rgba(0,0,0,.04);
  transform: translateY(-8px) scale(1.01);
}
/* Open Props fan-favorite: extra-bouncy spring on interactive elements */
.bf-tag:hover { transform: scale(1.12); }
.bf-tag { transition: transform .4s cubic-bezier(.22,1.5,.36,1); }
.bf-card-readmore:hover { transform: translateX(6px); }
.bf-card-image img {
  width: 100%; height: 200px; object-fit: cover; display: block;
}
.bf-card-body {
  padding: 1.5rem;
  flex: 1; display: flex; flex-direction: column; gap: .5rem;
}
.bf-card-tags { display: flex; flex-wrap: wrap; gap: .35rem; }
.bf-tag {
  display: inline-block;
  padding: .2rem .6rem;
  font-size: .65rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .04em;
  background: #e0e7ff;
  color: #6366f1;
  border-radius: 9999px;
}
.bf-card-title { font-size: 1.1rem; font-weight: 700; margin: 0; }
.bf-card-title a { color: #343a40; text-decoration: none; }
.bf-card-title a:hover { color: #6366f1; }
.bf-card-date { font-size: .75rem; color: #868e96; }
.bf-card-text { font-size: .9rem; flex: 1; color: #868e96; }
.bf-card-readmore {
  display: inline-block;
  margin-top: auto;
  padding-top: .75rem;
  font-size: .8rem;
  font-weight: 700;
  color: #6366f1;
  text-decoration: none;
  transition: transform .3s cubic-bezier(.34,1.56,.64,1);
}
.bf-card-readmore:hover { text-decoration: underline; transform: translateX(3px); }

/* Leading */
.bf-blog-leading { margin-bottom: 2rem; }
.bf-blog-leading .bf-card { flex-direction: row; }
.bf-blog-leading .bf-card-image { flex: 0 0 50%; }
.bf-blog-leading .bf-card-image img { height: 100%; min-height: 280px; }
.bf-blog-leading .bf-card-title {
  font-size: clamp(1.25rem, 2.5vw, 1.75rem);
}
@media (max-width: 768px) {
  .bf-blog-leading .bf-card { flex-direction: column; }
  .bf-blog-leading .bf-card-image { flex: none; }
  .bf-blog-leading .bf-card-image img { height: 200px; min-height: auto; }
}

/* Sidebar — elevated card, rounded */
.bf-module {
  background: #fff;
  border-radius: 1rem;
  box-shadow: 0 1px 2px rgba(0,0,0,.05), 0 1px 3px rgba(0,0,0,.04);
  padding: 1.5rem;
  margin-bottom: 1.5rem;
}
.bf-module-title {
  font-size: .7rem; font-weight: 700; text-transform: uppercase;
  letter-spacing: .08em; color: #868e96;
  border-bottom: 1px solid #dee2e6;
  padding-bottom: .5rem; margin-bottom: .75rem;
}
.bf-sidebar .mod-articles-items { list-style: none; padding: 0; margin: 0; }
.bf-sidebar .mod-articles-item {
  margin: 0 !important; padding: 0 !important;
  background: none !important; box-shadow: none !important;
}
.bf-sidebar .mod-articles-item-content { display: contents; }
.bf-sidebar .mod-articles-title { font-size: .88rem !important; font-weight: 400 !important; margin: 0 !important; }
.bf-sidebar .mod-articles-link {
  display: block; padding: .4rem .5rem; text-decoration: none;
  color: #343a40; border-radius: .5rem;
  transition: all .25s cubic-bezier(.34,1.56,.64,1);
}
.bf-sidebar .mod-articles-link:hover {
  background: #e0e7ff; color: #6366f1; transform: translateX(3px);
}
.bf-sidebar .tagspopular ul { display: flex; flex-wrap: wrap; gap: .35rem; list-style: none; padding: 0; }

/* Content — fluid typography with clamp() */
.bf-content { color: #343a40; }
.page-header h1 {
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 800;
  color: #343a40;
  margin-bottom: 1rem;
}
.com-content-article__body h2 {
  font-size: clamp(1.4rem, 3vw, 1.85rem);
  font-weight: 700;
  margin-bottom: .5rem;
  color: #343a40;
}
.com-content-article__body h3 {
  font-size: clamp(1.1rem, 2vw, 1.35rem);
  font-weight: 600;
  margin-bottom: .4rem;
  color: #343a40;
}
.com-content-article__body hgroup { margin-bottom: 1.5rem; }
.com-content-article__body hgroup p { color: #868e96; }
.com-content-article__body section + section {
  margin-top: 2.5rem; padding-top: 2rem; border-top: 1px solid #dee2e6;
}

/* Grid cards — progressive shadows, spring transitions */
.com-content-article__body .grid > article,
.com-content-article__body .home-grid > article {
  background: #fff;
  border-radius: 1rem;
  box-shadow: 0 1px 2px rgba(0,0,0,.05), 0 1px 3px rgba(0,0,0,.04);
  padding: 1.5rem;
  transition: box-shadow .4s cubic-bezier(.34,1.56,.64,1), transform .4s cubic-bezier(.34,1.56,.64,1);
}
.com-content-article__body .grid > article:hover,
.com-content-article__body .home-grid > article:hover {
  box-shadow: 0 4px 8px rgba(0,0,0,.06), 0 12px 28px rgba(0,0,0,.08), 0 20px 44px rgba(0,0,0,.04);
  transform: translateY(-6px);
}
.com-content-article__body .grid > article > header,
.com-content-article__body .home-grid > article > header {
  font-size: .65rem; font-weight: 700; text-transform: uppercase;
  letter-spacing: .08em; color: #6366f1;
  margin-bottom: .75rem; padding-bottom: .5rem;
  border-bottom: 2px solid #e0e7ff;
}
.com-content-article__body .grid > article > h3,
.com-content-article__body .home-grid > article > h3 {
  margin-top: 0; color: #6366f1; font-size: 1.5rem;
}
.com-content-article__body .grid > article > hgroup > h3 {
  margin-top: 0; color: #6366f1; font-size: 2rem; font-weight: 800;
}
.com-content-article__body .grid > div > h3 {
  font-size: clamp(2rem, 4vw, 2.5rem);
  font-weight: 800; color: #6366f1; margin-bottom: .25rem; line-height: 1;
}
.com-content-article__body .grid > article ul,
.com-content-article__body .home-grid > article ul {
  list-style: disc; padding-left: 1.25rem; margin: .75rem 0 1rem;
}
.com-content-article__body .grid > article li { margin-bottom: .25rem; }

/* Buttons — Open Props vibrant, spring hover */
.com-content-article__body a[role="button"] {
  display: inline-flex;
  padding: .65rem 1.5rem;
  font-weight: 700;
  font-size: .9rem;
  text-decoration: none;
  border-radius: .5rem;
  transition: all .3s cubic-bezier(.34,1.56,.64,1);
  background: #6366f1;
  color: #fff;
  border: none;
}
.com-content-article__body a[role="button"]:hover {
  filter: brightness(1.1);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(99,102,241,.3);
}
.com-content-article__body a[role="button"].secondary {
  background: #e0e7ff;
  color: #6366f1;
}
.com-content-article__body a[role="button"].secondary:hover {
  background: #6366f1;
  color: #fff;
}

/* Blockquote — tinted background, blob-ish radius */
blockquote {
  background: #e0e7ff;
  border-left: 4px solid #6366f1;
  border-radius: 0 1rem 1rem 0;
  padding: 1.5rem 2rem;
  margin: 1.5rem 0;
  font-style: italic;
  color: #343a40;
}
blockquote footer { font-style: normal; margin-top: .75rem; background: none; padding: 0; }
blockquote cite { font-weight: 700; color: #6366f1; }

/* FAQ — shadow elevation, spring animation */
details {
  background: #fff;
  border-radius: .75rem;
  box-shadow: 0 1px 2px rgba(0,0,0,.05), 0 1px 3px rgba(0,0,0,.04);
  margin-bottom: .75rem;
  overflow: hidden;
  color: #343a40;
  transition: box-shadow .3s cubic-bezier(.34,1.56,.64,1);
}
details:hover {
  box-shadow: 0 2px 4px rgba(0,0,0,.06), 0 4px 12px rgba(0,0,0,.06);
}
details summary {
  padding: 1rem 1.25rem;
  font-weight: 600;
  cursor: pointer;
  transition: background .2s;
}
details summary:hover { background: #f8f9fa; }
details[open] summary {
  border-bottom: 1px solid #dee2e6;
  background: #6366f1;
  color: #fff;
}
details > *:not(summary) { padding: 0 1.25rem; }
details > p:last-child { padding-bottom: 1rem; }

mark { background: #e0e7ff; color: #6366f1; padding: .1em .3em; border-radius: .25rem; }

/* Tags — pill shaped */
.tags .btn-info {
  display: inline-block;
  padding: .2rem .6rem;
  font-size: .65rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .04em;
  text-decoration: none;
  background: #e0e7ff;
  color: #6366f1;
  border-radius: 9999px;
  border: none;
  transition: all .25s cubic-bezier(.34,1.56,.64,1);
}
.tags .btn-info:hover { background: #6366f1; color: #fff; transform: scale(1.05); }

/* Read more — outlined, spring animation */
.readmore .btn-secondary {
  display: inline-block;
  padding: .4rem .8rem;
  font-size: .8rem;
  font-weight: 600;
  text-decoration: none;
  color: #6366f1;
  border: 2px solid #6366f1;
  border-radius: .5rem;
  transition: all .3s cubic-bezier(.34,1.56,.64,1);
}
.readmore .btn-secondary:hover {
  background: #6366f1; color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(99,102,241,.25);
}
.readmore .icon-chevron-right { display: none; }

/* Pagination — rounded pills, shadow */
.bf-pagination .pagination {
  display: flex; gap: .25rem; list-style: none; padding: 0; justify-content: center;
}
.bf-pagination .page-link {
  display: flex; align-items: center; justify-content: center;
  min-width: 36px; height: 36px; padding: 0 .75rem;
  background: #fff; border-radius: .5rem;
  text-decoration: none; font-size: .85rem; color: #343a40;
  box-shadow: 0 1px 2px rgba(0,0,0,.05);
  transition: all .25s cubic-bezier(.34,1.56,.64,1);
}
.bf-pagination .page-link:hover {
  background: #e0e7ff; color: #6366f1;
  transform: translateY(-2px);
}
.bf-pagination .active .page-link { background: #6366f1; color: #fff; }
.bf-pagination .disabled .page-link { opacity: .3; pointer-events: none; }
.pagination__wrapper { display: contents; }

/* Contact — rounded inputs, purple focus glow */
.com-contact input[type="text"],
.com-contact input[type="email"],
.com-contact textarea,
.com-contact select {
  width: 100%; padding: .625rem .875rem; font-size: 1rem;
  border: 1px solid #dee2e6; border-radius: .5rem;
  background: #fff; color: #343a40;
  transition: border-color .2s, box-shadow .3s cubic-bezier(.34,1.56,.64,1);
}
.com-contact input:focus,
.com-contact textarea:focus,
.com-contact select:focus {
  border-color: #6366f1;
  outline: none;
  box-shadow: 0 0 0 3px rgba(99,102,241,.15);
}
.control-group { margin-bottom: 1rem; }
.control-label label { display: block; margin-bottom: .4rem; font-weight: 600; font-size: .9rem; }
.com-contact .btn-primary,
.com-contact button[type="submit"] {
  display: inline-flex; padding: .65rem 1.5rem;
  font-weight: 700; font-size: .9rem;
  background: #6366f1; color: #fff;
  border: none; border-radius: .5rem; cursor: pointer;
  transition: all .3s cubic-bezier(.34,1.56,.64,1);
}
.com-contact .btn-primary:hover,
.com-contact button[type="submit"]:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(99,102,241,.3);
}

/* Footer — white card on surface */
.bf-footer {
  background: #fff;
  border-top: 1px solid #dee2e6;
}
.bf-footer-bottom { color: #868e96; }
.bf-footer a { color: #343a40; text-decoration: none; }
.bf-footer a:hover { color: #6366f1; }
.bf-footer .bf-module-title {
  font-size: .7rem; font-weight: 700; text-transform: uppercase;
  letter-spacing: .08em; color: #868e96; margin-bottom: .75rem;
}
.bf-footer ul { list-style: none; padding: 0; }
.bf-footer ul li { padding: .15rem 0; }

/* Alerts — rounded, tinted */
.alert { padding: 1.25rem 1.5rem; border-radius: .75rem; margin: 1rem 0; }
.alert-info { background: #dbe4ff; color: #1864ab; }
.alert-success { background: #d3f9d8; color: #2b8a3e; }
.alert-warning { background: #fff3bf; color: #e67700; }
.alert-danger { background: #ffe3e3; color: #c92a2a; }

/* Article image — generous radius */
.com-content-article figure.item-image { margin: 0 0 1.5rem; }
.com-content-article figure.item-image img {
  width: 100%; max-height: 480px; object-fit: cover; border-radius: 1rem;
}

/* Tag results */
.com-tags-tag__category.list-group { list-style: none; padding: 0; }
.com-tags-tag__category .list-group-item { padding: 0; border: none; background: none; }
.com-tags-tag__category .list-group-item h3 a {
  display: block; padding: .65rem .75rem; text-decoration: none;
  border-radius: .5rem; transition: all .25s cubic-bezier(.34,1.56,.64,1);
  color: #343a40;
}
.com-tags-tag__category .list-group-item h3 a:hover {
  background: #e0e7ff; color: #6366f1; transform: translateX(3px);
}