/* ==========================================================================
   UK Decoded — professional UK-flag theme
   Navy #012169 / Red #C8102E / White, with light neutral surfaces.
   ========================================================================== */

:root {
  --ukd-navy:      #012169;   /* Union Flag blue */
  --ukd-navy-deep: #011747;
  --ukd-navy-soft: #1d3d8f;
  --ukd-red:       #C8102E;   /* Union Flag red */
  --ukd-red-dark:  #a30d26;
  --ukd-ink:       #1a2233;
  --ukd-muted:     #64748b;
  --ukd-line:      #e2e8f0;
  --ukd-surface:   #f6f8fb;
}

body {
  font-family: 'Inter', 'Noto Sans SC', system-ui, -apple-system, 'Segoe UI', sans-serif;
  color: var(--ukd-ink);
  background: var(--ukd-surface);
}

h1, h2, h3, .ukd-serif {
  font-family: 'Merriweather', 'Noto Sans SC', Georgia, serif;
}

.ukd-zh { font-family: 'Noto Sans SC', 'Inter', sans-serif; }

/* ── Navbar ─────────────────────────────────────────────────────────── */
.ukd-navbar {
  background: var(--ukd-navy);
  border-bottom: 3px solid var(--ukd-red);
}
.ukd-navbar .nav-link { color: rgba(255,255,255,.85); font-weight: 500; }
.ukd-navbar .nav-link:hover, .ukd-navbar .nav-link:focus { color: #fff; }
.ukd-brand-accent { color: #f8b8c2; }
.ukd-brand-flag {
  display: inline-block; width: 28px; height: 18px; border-radius: 3px;
  background:
    linear-gradient(to bottom, transparent 42%, var(--ukd-red) 42%, var(--ukd-red) 58%, transparent 58%),
    linear-gradient(to right,  transparent 42%, var(--ukd-red) 42%, var(--ukd-red) 58%, transparent 58%),
    linear-gradient(to bottom, transparent 34%, #fff 34%, #fff 66%, transparent 66%),
    linear-gradient(to right,  transparent 34%, #fff 34%, #fff 66%, transparent 66%),
    var(--ukd-navy-soft);
  box-shadow: inset 0 0 0 1px rgba(255,255,255,.35);
}
.ukd-nav-search { min-width: 180px; border: 0; }

/* ── Buttons & links ────────────────────────────────────────────────── */
.btn-primary {
  --bs-btn-bg: var(--ukd-navy);
  --bs-btn-border-color: var(--ukd-navy);
  --bs-btn-hover-bg: var(--ukd-navy-deep);
  --bs-btn-hover-border-color: var(--ukd-navy-deep);
  --bs-btn-active-bg: var(--ukd-navy-deep);
  --bs-btn-active-border-color: var(--ukd-navy-deep);
}
.btn-danger {
  --bs-btn-bg: var(--ukd-red);
  --bs-btn-border-color: var(--ukd-red);
  --bs-btn-hover-bg: var(--ukd-red-dark);
  --bs-btn-hover-border-color: var(--ukd-red-dark);
  --bs-btn-active-bg: var(--ukd-red-dark);
  --bs-btn-active-border-color: var(--ukd-red-dark);
}
.btn-outline-primary {
  --bs-btn-color: var(--ukd-navy);
  --bs-btn-border-color: var(--ukd-navy);
  --bs-btn-hover-bg: var(--ukd-navy);
  --bs-btn-hover-border-color: var(--ukd-navy);
  --bs-btn-active-bg: var(--ukd-navy);
  --bs-btn-active-border-color: var(--ukd-navy);
}
a { color: var(--ukd-navy-soft); }
a:hover { color: var(--ukd-navy); }

/* ── Hero (dark background → light text) ────────────────────────────── */
.ukd-hero {
  background: linear-gradient(135deg, var(--ukd-navy-deep) 0%, var(--ukd-navy) 55%, var(--ukd-navy-soft) 100%);
  color: #fff;
  padding: 3.5rem 0 3rem;
  position: relative;
  overflow: hidden;
}
.ukd-hero::after {
  content: '';
  position: absolute; inset: 0;
  background:
    linear-gradient(115deg, transparent 47.5%, rgba(200,16,46,.35) 47.5%, rgba(200,16,46,.35) 52.5%, transparent 52.5%),
    linear-gradient(65deg,  transparent 47.5%, rgba(255,255,255,.08) 47.5%, rgba(255,255,255,.08) 52.5%, transparent 52.5%);
  pointer-events: none;
}
.ukd-hero > .container { position: relative; z-index: 1; }
.ukd-hero h1 { color: #fff; }
.ukd-hero .ukd-hero-sub { color: #d9e1f5; }
.ukd-hero .ukd-hero-zh { color: #b9c6e8; }

.ukd-hero-search .form-control {
  border: 0; height: 3.2rem; font-size: 1.05rem;
}
.ukd-hero-search .btn { height: 3.2rem; min-width: 3.5rem; }

/* ── Cards & surfaces ───────────────────────────────────────────────── */
.ukd-paper {
  background: #fff;
  border: 1px solid var(--ukd-line);
  border-radius: 14px;
  padding: 1.75rem;
  box-shadow: 0 1px 3px rgba(1, 33, 105, .06);
}
.ukd-section-card {
  background: #fff;
  border: 1px solid var(--ukd-line);
  border-top: 4px solid var(--ukd-navy);
  border-radius: 12px;
  padding: 1.25rem;
  height: 100%;
  transition: transform .12s ease, box-shadow .12s ease, border-color .12s ease;
  display: block;
  text-decoration: none;
  color: var(--ukd-ink);
}
.ukd-section-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 20px rgba(1, 33, 105, .12);
  border-top-color: var(--ukd-red);
  color: var(--ukd-ink);
}
.ukd-section-card .ukd-card-icon {
  width: 46px; height: 46px; border-radius: 10px;
  background: rgba(1,33,105,.08); color: var(--ukd-navy);
  display: inline-flex; align-items: center; justify-content: center;
  font-size: 1.35rem;
}
.ukd-section-title { color: var(--ukd-navy); }

/* Entry list rows */
.ukd-entry-row {
  display: block; text-decoration: none; color: var(--ukd-ink);
  background: #fff; border: 1px solid var(--ukd-line); border-radius: 10px;
  padding: .85rem 1.1rem; margin-bottom: .6rem;
  transition: border-color .12s, box-shadow .12s;
}
.ukd-entry-row:hover { border-color: var(--ukd-navy-soft); box-shadow: 0 3px 10px rgba(1,33,105,.08); color: var(--ukd-ink); }
.ukd-entry-phrase { font-weight: 600; color: var(--ukd-navy); }

/* Entry detail */
.ukd-entry-header {
  background: linear-gradient(135deg, var(--ukd-navy-deep), var(--ukd-navy));
  color: #fff; border-radius: 14px; padding: 2rem;
}
.ukd-entry-header h1 { color: #fff; margin-bottom: .25rem; }
.ukd-entry-header .ukd-pron { color: #c3cfec; }
.ukd-meaning-zh {
  background: #fdf5f6; border-left: 4px solid var(--ukd-red);
  border-radius: 0 10px 10px 0; padding: 1rem 1.25rem;
}
.ukd-example {
  background: var(--ukd-surface); border: 1px solid var(--ukd-line);
  border-radius: 10px; padding: 1rem 1.25rem; white-space: pre-line;
}
.ukd-reply-chip {
  background: rgba(1,33,105,.06); border: 1px solid rgba(1,33,105,.15);
  border-radius: 999px; padding: .35rem .9rem; display: inline-block;
  color: var(--ukd-navy); font-weight: 500;
}

/* ── Forms ──────────────────────────────────────────────────────────── */
.form-control, .form-select, textarea.form-control {
  border: 2px solid #b6c3e4;
  background-color: #fdfeff;
}
.form-check-input { border: 2px solid #b6c3e4; }
.form-control::placeholder { color: #94a3b8; }
.form-control:focus, .form-select:focus, .form-check-input:focus {
  border-color: var(--ukd-navy-soft);
  box-shadow: 0 0 0 .2rem rgba(1, 33, 105, .12);
}
.form-check-input:checked { background-color: var(--ukd-navy); border-color: var(--ukd-navy); }

/* ── Footer (dark background → light text) ──────────────────────────── */
.ukd-footer { background: #0c1430; color: #c7d0e2; border-top: 3px solid var(--ukd-red); }
.ukd-footer a { color: #c7d0e2; }
.ukd-footer a:hover { color: #fff; }

/* ── Ad zones ───────────────────────────────────────────────────────── */
.ukd-ad-zone { display: flex; flex-direction: column; align-items: center; gap: 1rem; }
.ukd-ad-zone-top, .ukd-ad-zone-bottom { margin: 1rem 0; }
.ukd-ad { text-align: center; }
.ukd-ad-label {
  font-size: .62rem; text-transform: uppercase; letter-spacing: .12em;
  color: #94a3b8; margin-bottom: 2px;
}
.ukd-ad-placeholder {
  background: repeating-linear-gradient(45deg, #f1f5f9, #f1f5f9 12px, #e9eef5 12px, #e9eef5 24px);
  border: 1px dashed #cbd5e1;
  border-radius: 6px;
  color: #94a3b8;
}
.ukd-ad-body { margin: 0 auto; overflow: hidden; }

/* Content page layout with fixed-width ad sidebars. Side columns are 340px —
   wide enough for every allowed sidebar ad (zone max 336px) — and only appear
   when the viewport can hold both sidebars plus a readable main column. */
.ukd-wide { max-width: 1720px; }
.ukd-content-layout { display: flex; gap: 1.5rem; align-items: flex-start; }
.ukd-content-main { flex: 1 1 auto; min-width: 0; max-width: 980px; margin: 0 auto; }
.ukd-side-col { flex: 0 0 340px; width: 340px; max-width: 340px; display: none; }
@media (min-width: 1400px) {
  .ukd-side-col { display: block; }
  .ukd-side-col .ukd-ad-zone { position: sticky; top: 90px; }
}
/* Belt and braces: an ad can never paint outside its zone */
.ukd-ad, .ukd-ad-body, .ukd-ad-placeholder { max-width: 100%; }
.ukd-ad-zone { overflow: hidden; }

/* ── Admin ──────────────────────────────────────────────────────────── */
.ukd-admin-sidebar {
  background: var(--ukd-navy-deep);
  min-height: 100vh;
}
.ukd-admin-sidebar .nav-link {
  color: rgba(255,255,255,.78);
  border-radius: 8px;
  margin-bottom: 2px;
}
.ukd-admin-sidebar .nav-link:hover { color: #fff; background: rgba(255,255,255,.08); }
.ukd-admin-sidebar .nav-link.active { color: #fff; background: var(--ukd-red); }

/* Drag & drop placement editor */
.ukd-dz {
  min-height: 110px;
  border: 2px dashed #cbd5e1;
  border-radius: 10px;
  background: #f8fafc;
  padding: .75rem;
  transition: border-color .15s, background .15s;
}
.ukd-dz.ukd-dz-over { border-color: var(--ukd-navy-soft); background: #eef3ff; }
.ukd-dz.ukd-dz-reject { border-color: var(--ukd-red); background: #fdf2f4; }
.ukd-ad-chip {
  background: #fff;
  border: 1px solid #cbd5e1;
  border-left: 4px solid var(--ukd-navy);
  border-radius: 8px;
  padding: .5rem .75rem;
  margin-bottom: .5rem;
  cursor: grab;
  user-select: none;
  font-size: .875rem;
}
.ukd-ad-chip:active { cursor: grabbing; }
.ukd-ad-chip.dragging { opacity: .5; }
.ukd-ad-chip .ukd-chip-size { color: var(--ukd-muted); font-size: .78rem; }

/* ── About Me (round photo card on the About page) ──────────────────── */
/* Same dimensions as VitaWhat's .vw-about-photo: 160px, 120px on mobile. */
.ukd-about-photo {
  width: 160px; height: 160px; object-fit: cover;
  border-radius: 50%;
  border: 4px solid #fff;
  box-shadow: 0 3px 12px rgba(1, 33, 105, .25);
  display: block;
}
@media (max-width: 575px) {
  .ukd-about-photo { width: 120px; height: 120px; }
}
.ukd-about-bio { font-size: 1.02rem; line-height: 1.7; }

/* ── Cornerstone guide articles ─────────────────────────────────────── */
.ukd-guide-body { font-size: 1.05rem; line-height: 1.75; }
.ukd-guide-body h2 {
  font-size: 1.4rem; color: var(--ukd-navy);
  margin-top: 2rem; margin-bottom: .75rem;
  padding-bottom: .35rem; border-bottom: 2px solid rgba(200,16,46,.25);
}
.ukd-guide-body h3 { font-size: 1.15rem; color: var(--ukd-navy-soft); margin-top: 1.4rem; }
.ukd-guide-body ul, .ukd-guide-body ol { margin-bottom: 1rem; }
.ukd-guide-body li { margin-bottom: .35rem; }
.ukd-guide-body table { font-size: .95rem; }
.ukd-guide-body a { text-decoration-thickness: 1px; text-underline-offset: 2px; }

/* ── Converter ──────────────────────────────────────────────────────── */
.ukd-tool-card { border-top: 4px solid var(--ukd-red); }
.ukd-converter-result {
  font-size: 1.3rem; font-weight: 600; color: var(--ukd-navy);
  min-height: 2rem;
}

/* Badges spacing on entry rows */
.ukd-badges .badge { font-weight: 500; }

@media (max-width: 575.98px) {
  .ukd-hero { padding: 2.25rem 0 2rem; }
  .ukd-paper { padding: 1.15rem; }
}