/* ================================================================
   HIBIKI JAPANESE LANGUAGE CENTRE — Design System v2
   Palette: Dark Red #9B1C1C  |  White #FFFFFF  |  Black #111827
   ================================================================ */

:root {
  --hbk-red:         #9B1C1C;
  --hbk-red-hover:   #7F1D1D;
  --hbk-red-light:   #FEE2E2;
  --hbk-black:       #111827;
  --hbk-dark:        #1F2937;
  --hbk-text:        #374151;
  --hbk-muted:       #6B7280;
  --hbk-border:      #E5E7EB;
  --hbk-bg:          #F9FAFB;
  --hbk-white:       #FFFFFF;
  --hbk-shadow-sm:   0 1px 3px rgba(0,0,0,.08);
  --hbk-shadow:      0 4px 16px rgba(0,0,0,.1);
  --hbk-shadow-lg:   0 16px 40px rgba(0,0,0,.12);
  --hbk-radius:      12px;
  --hbk-radius-sm:   8px;
  --hbk-radius-lg:   20px;
  --hbk-ease:        cubic-bezier(.4,0,.2,1);
}

/* ── Base ─────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  color: var(--hbk-text);
  background: var(--hbk-white);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
h1,h2,h3,h4,h5,h6 {
  font-weight: 700;
  color: var(--hbk-black);
  line-height: 1.3;
}
a { text-decoration: none; }
img { max-width: 100%; }

/* ── Buttons ──────────────────────────────────────────────── */
.btn-hbk-primary {
  background: var(--hbk-red);
  color: var(--hbk-white);
  border: 2px solid var(--hbk-red);
  border-radius: var(--hbk-radius-sm);
  padding: .65rem 1.75rem;
  font-weight: 600;
  font-size: .94rem;
  letter-spacing: .01em;
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  transition: background .25s var(--hbk-ease), transform .2s, box-shadow .25s;
  cursor: pointer;
}
.btn-hbk-primary:hover {
  background: var(--hbk-red-hover);
  border-color: var(--hbk-red-hover);
  color: var(--hbk-white);
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(155,28,28,.35);
}
.btn-hbk-outline {
  background: transparent;
  color: var(--hbk-red);
  border: 2px solid var(--hbk-red);
  border-radius: var(--hbk-radius-sm);
  padding: .65rem 1.75rem;
  font-weight: 600;
  font-size: .94rem;
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  transition: all .25s var(--hbk-ease);
}
.btn-hbk-outline:hover {
  background: var(--hbk-red);
  color: var(--hbk-white);
  transform: translateY(-1px);
}
.btn-hbk-white {
  background: var(--hbk-white);
  color: var(--hbk-red);
  border: 2px solid var(--hbk-white);
  border-radius: var(--hbk-radius-sm);
  padding: .8rem 2.25rem;
  font-weight: 700;
  font-size: 1rem;
  display: inline-flex;
  align-items: center;
  gap: .6rem;
  transition: all .25s var(--hbk-ease);
}
.btn-hbk-white:hover {
  background: var(--hbk-red-light);
  border-color: var(--hbk-red-light);
  color: var(--hbk-red-hover);
  transform: translateY(-2px);
  box-shadow: var(--hbk-shadow);
}
.btn-hbk-dark {
  background: var(--hbk-black);
  color: var(--hbk-white);
  border: 2px solid var(--hbk-black);
  border-radius: var(--hbk-radius-sm);
  padding: .65rem 1.75rem;
  font-weight: 600;
  font-size: .94rem;
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  transition: all .25s var(--hbk-ease);
}
.btn-hbk-dark:hover {
  background: var(--hbk-dark);
  color: var(--hbk-white);
  transform: translateY(-1px);
}

/* ── Navbar ───────────────────────────────────────────────── */
.hbk-nav {
  background: linear-gradient(135deg, rgba(17,24,39,.96) 0%, rgba(61,8,8,.92) 100%);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(255,255,255,.08);
  position: sticky;
  top: 0;
  z-index: 1030;
  padding: 0;
  transition: box-shadow .3s var(--hbk-ease), background .3s var(--hbk-ease);
}
.hbk-nav.scrolled {
  background: linear-gradient(135deg, rgba(17,24,39,.99) 0%, rgba(61,8,8,.97) 100%);
  box-shadow: 0 4px 24px rgba(0,0,0,.45);
}
.hbk-nav-brand {
  font-size: 1.25rem;
  font-weight: 800;
  color: #ffffff !important;
  letter-spacing: -.025em;
  display: flex;
  align-items: center;
  gap: .45rem;
}
.hbk-nav-brand-icon {
  width: 32px;
  height: 32px;
  background: var(--hbk-red);
  border-radius: 7px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--hbk-white);
  font-size: .95rem;
  font-weight: 900;
  flex-shrink: 0;
  font-family: serif;
}
.hbk-nav .nav-link {
  color: rgba(255,255,255,.85) !important;
  font-weight: 500;
  font-size: .93rem;
  padding: 1.35rem .9rem !important;
  position: relative;
  transition: color .2s;
  white-space: nowrap;
}
.hbk-nav .nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: .9rem;
  right: .9rem;
  height: 2px;
  background: #FCA5A5;
  transform: scaleX(0);
  transition: transform .25s var(--hbk-ease);
  border-radius: 2px 2px 0 0;
}
.hbk-nav .nav-link:hover,
.hbk-nav .nav-link.active { color: #FCA5A5 !important; }
.hbk-nav .nav-link:hover::after,
.hbk-nav .nav-link.active::after { transform: scaleX(1); }
.hbk-nav-toggler {
  border: 1.5px solid rgba(255,255,255,.25);
  border-radius: var(--hbk-radius-sm);
  padding: .35rem .6rem;
  background: transparent;
  cursor: pointer;
  color: rgba(255,255,255,.85);
  display: none;
  align-items: center;
}
.hbk-nav .navbar-toggler {
  color: rgba(255,255,255,.85);
}
@media (max-width: 991.98px) {
  .hbk-nav .navbar-collapse {
    border-top: 1px solid rgba(255,255,255,.08);
    padding: .5rem 0 .75rem;
  }
}

/* ── Section Labels ───────────────────────────────────────── */
.hbk-label {
  font-size: .74rem;
  font-weight: 700;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--hbk-red);
  display: flex;
  align-items: center;
  gap: .6rem;
  margin-bottom: .6rem;
}
.hbk-label::before {
  content: '';
  display: block;
  width: 24px;
  height: 2px;
  background: var(--hbk-red);
  flex-shrink: 0;
  border-radius: 2px;
}
.hbk-title {
  font-size: clamp(1.7rem, 3vw, 2.4rem);
  font-weight: 800;
  color: var(--hbk-black);
  line-height: 1.2;
  letter-spacing: -.02em;
}
.hbk-title .accent { color: var(--hbk-red); }
.hbk-divider {
  width: 40px;
  height: 3px;
  background: var(--hbk-red);
  border-radius: 2px;
  margin: .75rem 0 0;
}
.hbk-divider.mx-auto { margin-left: auto; margin-right: auto; }

/* ── Batch Bar ────────────────────────────────────────────── */
.hbk-batch-bar {
  background: var(--hbk-red);
  color: var(--hbk-white);
  font-weight: 600;
  font-size: .875rem;
  padding: .6rem 0;
  text-align: center;
  letter-spacing: .02em;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: .6rem;
}

/* ── Hero Slider ──────────────────────────────────────────── */
.hbk-hero-slide {
  min-height: 92vh;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  position: relative;
  display: flex;
  align-items: center;
}
.hbk-hero-slide::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(125deg, rgba(17,24,39,.82) 0%, rgba(155,28,28,.5) 100%);
  pointer-events: none;
}
.hbk-hero-slide-2 { background: linear-gradient(135deg, #1a0a0a 0%, #3d0808 100%); }
.hbk-hero-slide-3 { background: linear-gradient(135deg, #0d1117 0%, #1a0a2e 100%); }
.hbk-hero-slide-blue { background: linear-gradient(135deg, #0a1020 0%, #1a2a50 60%, #0a1020 100%); }
.hbk-hero-slide-green { background: linear-gradient(135deg, #0d1a0d 0%, #1a3520 60%, #0d1a0d 100%); }
.hbk-hero-slide-2::before,
.hbk-hero-slide-3::before,
.hbk-hero-slide-blue::before,
.hbk-hero-slide-green::before { display: none; }
.hbk-hero-content { position: relative; z-index: 2; }
.hbk-hero-kana {
  font-size: clamp(6rem, 15vw, 12rem);
  font-weight: 900;
  line-height: 1;
  opacity: .07;
  position: absolute;
  right: 3%;
  top: 50%;
  transform: translateY(-50%);
  color: #fff;
  pointer-events: none;
  user-select: none;
  font-family: 'Hiragino Sans', 'Yu Gothic', serif;
}
.hbk-hero-eyebrow {
  font-size: .76rem;
  font-weight: 700;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: rgba(255,255,255,.65);
  margin-bottom: 1.25rem;
  display: flex;
  align-items: center;
  gap: .6rem;
}
.hbk-hero-eyebrow span {
  display: block;
  width: 28px;
  height: 2px;
  background: var(--hbk-red);
  flex-shrink: 0;
  border-radius: 2px;
}
.hbk-hero-title {
  font-size: clamp(2.2rem, 5.5vw, 4rem);
  font-weight: 800;
  color: #fff;
  line-height: 1.12;
  margin-bottom: 1.25rem;
  letter-spacing: -.025em;
}
.hbk-hero-title .hl { color: #FCA5A5; }
.hbk-hero-subtitle {
  font-size: 1.05rem;
  color: rgba(255,255,255,.75);
  margin-bottom: 2.25rem;
  max-width: 500px;
  line-height: 1.75;
}
.carousel-indicators [data-bs-target] {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: rgba(255,255,255,.4);
  border: none;
  margin: 0 4px;
  transition: all .35s var(--hbk-ease);
}
.carousel-indicators .active {
  background: var(--hbk-white);
  width: 28px;
  border-radius: 4px;
}
.carousel-control-prev, .carousel-control-next {
  width: 44px;
  height: 44px;
  background: rgba(255,255,255,.1);
  border-radius: 50%;
  top: 50%;
  transform: translateY(-50%);
  bottom: auto;
  opacity: 1;
  transition: all .2s var(--hbk-ease);
  border: 1px solid rgba(255,255,255,.15);
  z-index: 10;
}
.carousel-control-prev { left: 20px; }
.carousel-control-next { right: 20px; }
.carousel-control-prev:hover, .carousel-control-next:hover { background: rgba(255,255,255,.2); }

/* ── Stats Strip ──────────────────────────────────────────── */
.hbk-stats-strip {
  background: var(--hbk-black);
  padding: 4rem 0;
  border-bottom: 1px solid rgba(255,255,255,.06);
}
.hbk-stat-item { text-align: center; padding: 1rem; }
.hbk-stat-number {
  font-size: clamp(2.25rem, 4vw, 3.25rem);
  font-weight: 900;
  color: var(--hbk-white);
  line-height: 1;
  display: block;
  letter-spacing: -.03em;
}
.hbk-stat-suffix { color: var(--hbk-red); }
.hbk-stat-label {
  font-size: .78rem;
  color: rgba(255,255,255,.45);
  margin-top: .6rem;
  font-weight: 600;
  letter-spacing: .08em;
  text-transform: uppercase;
}
.hbk-stat-sep {
  width: 1px;
  background: rgba(255,255,255,.08);
  align-self: stretch;
  margin: .5rem 0;
}

/* ── Course Cards ─────────────────────────────────────────── */
.hbk-course-card {
  background: var(--hbk-white);
  border: 1px solid var(--hbk-border);
  border-radius: var(--hbk-radius);
  overflow: hidden;
  transition: transform .3s var(--hbk-ease), box-shadow .3s var(--hbk-ease), border-color .3s;
  height: 100%;
  display: flex;
  flex-direction: column;
}
.hbk-course-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--hbk-shadow-lg);
  border-color: transparent;
}
.hbk-course-card-top {
  background: var(--hbk-black);
  padding: 2rem 1.5rem 1.5rem;
  position: relative;
  overflow: hidden;
}
.hbk-course-card-top::after {
  content: '';
  position: absolute;
  bottom: -40px; right: -24px;
  width: 120px; height: 120px;
  background: var(--hbk-red);
  border-radius: 50%;
  opacity: .12;
}
.hbk-course-level {
  font-size: .68rem;
  font-weight: 700;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--hbk-red);
  background: rgba(155,28,28,.15);
  border: 1px solid rgba(155,28,28,.25);
  padding: .2rem .7rem;
  border-radius: 20px;
  display: inline-block;
  margin-bottom: .75rem;
}
.hbk-course-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--hbk-white);
  margin-bottom: .4rem;
  line-height: 1.3;
}
.hbk-course-mode {
  font-size: .78rem;
  color: rgba(255,255,255,.45);
  font-weight: 500;
}
.hbk-course-body { padding: 1.5rem; flex: 1; display: flex; flex-direction: column; }
.hbk-course-meta { display: flex; flex-direction: column; gap: .55rem; margin-bottom: 1.25rem; }
.hbk-course-meta-row {
  display: flex;
  align-items: center;
  gap: .6rem;
  font-size: .865rem;
  color: var(--hbk-text);
}
.hbk-course-meta-row svg { color: var(--hbk-red); flex-shrink: 0; }
.hbk-course-fee {
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--hbk-red);
  margin-top: auto;
}
.hbk-course-footer {
  padding: 0 1.5rem 1.5rem;
  display: flex;
  gap: .6rem;
}

/* ── Why Us Cards ─────────────────────────────────────────── */
.hbk-why-card {
  padding: 2rem;
  border: 1px solid var(--hbk-border);
  border-radius: var(--hbk-radius);
  background: var(--hbk-white);
  transition: border-color .3s, box-shadow .3s;
}
.hbk-why-card:hover {
  border-color: var(--hbk-red);
  box-shadow: 0 0 0 4px rgba(155,28,28,.05);
}
.hbk-why-icon {
  width: 52px; height: 52px;
  background: var(--hbk-red-light);
  border-radius: var(--hbk-radius-sm);
  display: flex; align-items: center; justify-content: center;
  color: var(--hbk-red);
  margin-bottom: 1.25rem;
}
.hbk-why-title { font-size: 1rem; font-weight: 700; color: var(--hbk-black); margin-bottom: .5rem; }
.hbk-why-desc  { font-size: .875rem; color: var(--hbk-muted); line-height: 1.65; margin: 0; }

/* ── Instructor Cards ─────────────────────────────────────── */
.hbk-instructor-card {
  background: var(--hbk-white);
  border: 1px solid var(--hbk-border);
  border-radius: var(--hbk-radius);
  padding: 2rem 1.5rem;
  text-align: center;
  transition: transform .3s var(--hbk-ease), box-shadow .3s var(--hbk-ease);
}
.hbk-instructor-card:hover { transform: translateY(-5px); box-shadow: var(--hbk-shadow-lg); }
.hbk-instructor-photo {
  width: 96px; height: 96px;
  border-radius: 50%;
  object-fit: cover;
  border: 3px solid var(--hbk-border);
  margin: 0 auto 1rem;
  display: block;
  transition: border-color .3s;
}
.hbk-instructor-card:hover .hbk-instructor-photo { border-color: var(--hbk-red); }
.hbk-instructor-initials {
  width: 96px; height: 96px;
  border-radius: 50%;
  background: var(--hbk-red);
  color: var(--hbk-white);
  font-size: 1.75rem;
  font-weight: 700;
  display: flex; align-items: center; justify-content: center;
  margin: 0 auto 1rem;
}
.hbk-instructor-name { font-size: 1.05rem; font-weight: 700; color: var(--hbk-black); margin-bottom: .25rem; }
.hbk-instructor-role { font-size: .83rem; color: var(--hbk-red); font-weight: 600; margin-bottom: .4rem; }
.hbk-instructor-qual { font-size: .8rem; color: var(--hbk-muted); margin-bottom: .75rem; }
.hbk-instructor-bio { font-size: .85rem; color: var(--hbk-text); line-height: 1.65; }

/* ── Review Carousel ──────────────────────────────────────── */
.hbk-reviews-section { background: var(--hbk-bg); }
.hbk-review-card {
  background: var(--hbk-white);
  border: 1px solid var(--hbk-border);
  border-radius: var(--hbk-radius);
  padding: 2rem;
  margin: .5rem;
  position: relative;
}
.hbk-review-quote {
  position: absolute; top: 1rem; right: 1.25rem;
  color: var(--hbk-red); opacity: .12;
  font-family: Georgia, serif; font-size: 4.5rem; line-height: 1;
}
.hbk-review-stars { display: flex; gap: 2px; margin-bottom: .75rem; }
.hbk-review-stars svg { color: #F59E0B; }
.hbk-review-text {
  font-size: .92rem; color: var(--hbk-text);
  line-height: 1.7; font-style: italic; margin-bottom: 1.25rem;
}
.hbk-review-author { font-weight: 700; font-size: .9rem; color: var(--hbk-black); }
.hbk-review-course { font-size: .78rem; color: var(--hbk-muted); }

/* ── Blog Cards ───────────────────────────────────────────── */
.hbk-blog-card {
  background: var(--hbk-white);
  border: 1px solid var(--hbk-border);
  border-radius: var(--hbk-radius);
  overflow: hidden;
  transition: transform .3s var(--hbk-ease), box-shadow .3s;
  height: 100%; display: flex; flex-direction: column;
}
.hbk-blog-card:hover { transform: translateY(-4px); box-shadow: var(--hbk-shadow-lg); }
.hbk-blog-img { width: 100%; height: 200px; object-fit: cover; display: block; }
.hbk-blog-img-placeholder {
  height: 200px;
  background: linear-gradient(135deg, var(--hbk-black) 0%, #3d0808 100%);
  display: flex; align-items: center; justify-content: center;
}
.hbk-blog-body { padding: 1.5rem; flex: 1; display: flex; flex-direction: column; }
.hbk-blog-cat {
  font-size: .7rem; font-weight: 700; letter-spacing: .1em;
  text-transform: uppercase; color: var(--hbk-red); margin-bottom: .5rem;
}
.hbk-blog-title {
  font-size: 1rem; font-weight: 700; color: var(--hbk-black);
  line-height: 1.45; margin-bottom: .5rem; flex: 1;
}
.hbk-blog-title a { color: inherit; transition: color .2s; }
.hbk-blog-title a:hover { color: var(--hbk-red); }
.hbk-blog-excerpt { font-size: .855rem; color: var(--hbk-muted); line-height: 1.65; margin-bottom: 1rem; }
.hbk-blog-meta { font-size: .78rem; color: var(--hbk-muted); display: flex; align-items: center; gap: .4rem; }
.hbk-blog-footer { padding: 0 1.5rem 1.5rem; }
.hbk-read-link {
  font-size: .85rem; font-weight: 600; color: var(--hbk-red);
  display: inline-flex; align-items: center; gap: .3rem; transition: gap .2s;
}
.hbk-read-link:hover { gap: .6rem; color: var(--hbk-red-hover); }

/* ── Page Header ──────────────────────────────────────────── */
.hbk-page-header {
  background: var(--hbk-black);
  padding: 4.5rem 0 3.5rem;
  position: relative; overflow: hidden;
}
.hbk-page-header::before {
  content: '';
  position: absolute; top: -60%; right: -8%;
  width: 450px; height: 450px;
  background: var(--hbk-red);
  border-radius: 50%; opacity: .06;
  pointer-events: none;
}
.hbk-page-header h1 {
  color: var(--hbk-white);
  font-size: clamp(1.8rem, 3.5vw, 2.75rem);
  margin-bottom: .5rem;
}

/* ── Form Controls ────────────────────────────────────────── */
.hbk-input {
  border: 1.5px solid var(--hbk-border);
  border-radius: var(--hbk-radius-sm);
  padding: .75rem 1rem;
  font-size: .94rem;
  width: 100%;
  transition: border-color .2s, box-shadow .2s;
  background: var(--hbk-white);
  color: var(--hbk-text);
}
.hbk-input:focus {
  outline: none;
  border-color: var(--hbk-red);
  box-shadow: 0 0 0 3px rgba(155,28,28,.1);
}
.hbk-input::placeholder { color: var(--hbk-muted); }
.hbk-input.is-invalid { border-color: #DC2626; }
.hbk-label-text {
  font-size: .86rem; font-weight: 600;
  color: var(--hbk-dark); margin-bottom: .4rem; display: block;
}

/* ── Gallery ──────────────────────────────────────────────── */
.hbk-gallery-item { position: relative; overflow: hidden; border-radius: var(--hbk-radius-sm); display: block; }
.hbk-gallery-item img { display: block; transition: transform .4s var(--hbk-ease); }
.hbk-gallery-item:hover img { transform: scale(1.07); }
.hbk-gallery-overlay {
  position: absolute; inset: 0;
  background: rgba(17,24,39,.5);
  display: flex; align-items: center; justify-content: center;
  color: #fff; opacity: 0; transition: opacity .3s;
}
.hbk-gallery-item:hover .hbk-gallery-overlay { opacity: 1; }

/* ── Contact ──────────────────────────────────────────────── */
.hbk-contact-info {
  background: var(--hbk-black);
  border-radius: var(--hbk-radius-lg);
  padding: 2.5rem;
  height: 100%;
}
.hbk-contact-row { display: flex; gap: 1rem; margin-bottom: 1.75rem; }
.hbk-contact-icon {
  width: 44px; height: 44px;
  background: rgba(155,28,28,.2);
  border-radius: var(--hbk-radius-sm);
  display: flex; align-items: center; justify-content: center;
  color: var(--hbk-red); flex-shrink: 0;
}
.hbk-contact-label { font-size: .75rem; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; color: rgba(255,255,255,.4); margin-bottom: .2rem; }
.hbk-contact-value { font-size: .9rem; color: rgba(255,255,255,.8); line-height: 1.5; }

/* ── Footer ───────────────────────────────────────────────── */
.hbk-footer { background: var(--hbk-black); padding: 5rem 0 0; }
.hbk-footer-brand-text { font-size: 1.25rem; font-weight: 800; color: var(--hbk-white); letter-spacing: -.02em; }
.hbk-footer-brand-text span { color: var(--hbk-red); }
.hbk-footer-tagline { color: rgba(255,255,255,.4); font-size: .875rem; margin-top: .5rem; line-height: 1.65; max-width: 280px; }
.hbk-footer-heading { font-size: .72rem; font-weight: 700; letter-spacing: .14em; text-transform: uppercase; color: rgba(255,255,255,.35); margin-bottom: 1.25rem; }
.hbk-footer-link { color: rgba(255,255,255,.6); font-size: .875rem; display: block; margin-bottom: .6rem; transition: color .2s, padding-left .2s; }
.hbk-footer-link:hover { color: var(--hbk-white); padding-left: 4px; }
.hbk-footer-contact-row { display: flex; align-items: flex-start; gap: .6rem; margin-bottom: .875rem; }
.hbk-footer-contact-row svg { color: var(--hbk-red); flex-shrink: 0; margin-top: 2px; }
.hbk-footer-contact-row span { color: rgba(255,255,255,.6); font-size: .875rem; line-height: 1.55; }
.hbk-social-links { display: flex; gap: .6rem; margin-top: 1.5rem; }
.hbk-social-link {
  width: 36px; height: 36px;
  border-radius: 50%;
  background: rgba(255,255,255,.07);
  border: 1px solid rgba(255,255,255,.1);
  display: flex; align-items: center; justify-content: center;
  color: rgba(255,255,255,.55);
  transition: all .2s;
}
.hbk-social-link:hover { background: var(--hbk-red); border-color: var(--hbk-red); color: var(--hbk-white); }
.hbk-footer-bottom { border-top: 1px solid rgba(255,255,255,.06); margin-top: 3.5rem; padding: 1.5rem 0; }
.hbk-footer-bottom p { color: rgba(255,255,255,.3); font-size: .82rem; margin: 0; }

/* ── WhatsApp Button ──────────────────────────────────────── */
.hbk-wa-btn {
  position: fixed; bottom: 28px; right: 28px;
  z-index: 9999; width: 56px; height: 56px;
  background: #25D366; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  color: #fff;
  box-shadow: 0 4px 16px rgba(37,211,102,.4);
  transition: transform .2s, box-shadow .2s;
  text-decoration: none;
}
.hbk-wa-btn:hover { transform: scale(1.1); box-shadow: 0 6px 24px rgba(37,211,102,.55); color: #fff; }
.hbk-wa-btn::before {
  content: ''; position: absolute;
  width: 100%; height: 100%; border-radius: 50%;
  background: #25D366; z-index: -1;
  animation: hbk-pulse 2.2s ease-out infinite;
}
@keyframes hbk-pulse { 0% { transform: scale(1); opacity: .55; } 100% { transform: scale(1.65); opacity: 0; } }

/* ── Admin (unchanged) ────────────────────────────────────── */
#wrapper { display: flex; }
#sidebar-wrapper { min-width: 220px; min-height: 100vh; }
#page-content-wrapper { min-height: 100vh; }

/* ── Responsive ───────────────────────────────────────────── */
@media (max-width: 991.98px) {
  .hbk-nav .nav-link { padding: .7rem .6rem !important; }
  .hbk-nav .nav-link::after { display: none; }
  .hbk-hero-slide { min-height: 75vh; }
  .hbk-hero-kana { display: none; }
  .hbk-course-footer { flex-direction: column; }
  .hbk-nav-toggler { display: flex !important; }
}
@media (max-width: 767.98px) {
  .hbk-stats-strip .hbk-stat-sep { display: none; }
  .hbk-contact-info { padding: 1.75rem; }
  .hbk-page-header { padding: 3rem 0 2.5rem; }
}

/* ── Achievement Cards ────────────────────────────────────── */
.hbk-achievement-card {
  background: var(--hbk-white);
  border-radius: var(--hbk-radius-lg);
  overflow: hidden;
  box-shadow: var(--hbk-shadow);
  border: 1px solid var(--hbk-border);
  transition: transform .25s var(--hbk-ease), box-shadow .25s var(--hbk-ease);
  height: 100%;
  display: flex; flex-direction: column;
}
.hbk-achievement-card:hover { transform: translateY(-5px); box-shadow: var(--hbk-shadow-lg); }
.hbk-achievement-img {
  position: relative; height: 200px; overflow: hidden;
  background: linear-gradient(135deg, #1a0808, #3d0a0a);
  display: flex; align-items: center; justify-content: center;
}
.hbk-achievement-img img { width: 100%; height: 100%; object-fit: cover; display: block; }
.hbk-achievement-img-placeholder {
  font-size: 4rem; color: rgba(255,255,255,.12); font-weight: 900;
  user-select: none; letter-spacing: -.05em;
}
.hbk-achievement-badge-cat {
  position: absolute; top: .875rem; left: .875rem;
  background: var(--hbk-red); color: #fff;
  font-size: .68rem; font-weight: 700; letter-spacing: .08em; text-transform: uppercase;
  padding: .22rem .65rem; border-radius: 20px;
}
.hbk-achievement-body { padding: 1.5rem; flex: 1; display: flex; flex-direction: column; }
.hbk-achievement-title {
  font-size: 1rem; font-weight: 700; color: var(--hbk-black);
  margin: 0 0 .35rem; line-height: 1.4;
}
.hbk-achievement-student {
  font-size: .8rem; font-weight: 600; color: var(--hbk-red);
  text-transform: uppercase; letter-spacing: .06em; margin: 0 0 .75rem;
}
.hbk-achievement-desc {
  font-size: .875rem; color: var(--hbk-muted); line-height: 1.65;
  margin: 0; flex: 1;
}
.hbk-achievement-date {
  font-size: .75rem; color: var(--hbk-muted); margin-top: 1rem;
  display: flex; align-items: center; gap: .375rem;
}

/* ── Premium Review Cards ─────────────────────────────────── */
.hbk-review-card-v2 {
  background: var(--hbk-white);
  border-radius: var(--hbk-radius-lg);
  padding: 2rem;
  box-shadow: var(--hbk-shadow);
  border: 1px solid var(--hbk-border);
  position: relative;
  height: 100%;
  display: flex; flex-direction: column;
  transition: box-shadow .25s var(--hbk-ease), border-color .25s;
}
.hbk-review-card-v2:hover { box-shadow: var(--hbk-shadow-lg); border-color: var(--hbk-red); }
.hbk-review-card-v2::before {
  content: '\201C';
  position: absolute; top: 1.25rem; right: 1.5rem;
  font-size: 4rem; line-height: 1; color: var(--hbk-red);
  opacity: .15; font-family: Georgia, serif; font-weight: 900;
}
.hbk-reviewer-avatar {
  width: 52px; height: 52px; border-radius: 50%;
  object-fit: cover; border: 2px solid var(--hbk-border); flex-shrink: 0;
}
.hbk-reviewer-initials {
  width: 52px; height: 52px; border-radius: 50%;
  background: var(--hbk-red); color: #fff;
  font-size: 1.25rem; font-weight: 700;
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}
.hbk-review-stars-v2 { display: flex; gap: 2px; margin-bottom: .875rem; }
.hbk-review-body {
  font-size: .9rem; color: var(--hbk-text); line-height: 1.75;
  flex: 1; margin-bottom: 1.25rem;
  font-style: italic;
}
.hbk-review-name-v2 { font-weight: 700; color: var(--hbk-black); font-size: .9rem; }
.hbk-review-section { background: var(--hbk-bg); }
@media (max-width: 767.98px) {
  .hbk-achievement-img { height: 160px; }
  .hbk-review-card-v2 { padding: 1.5rem; }
}

/* ── Carousel Buttons ────────────────────────────────────── */
.hbk-carousel-btn {
  width: 40px; height: 40px;
  border-radius: 50%;
  border: 2px solid var(--hbk-border);
  background: var(--hbk-white);
  color: var(--hbk-black);
  display: inline-flex; align-items: center; justify-content: center;
  cursor: pointer;
  transition: background .2s var(--hbk-ease), border-color .2s, color .2s;
  padding: 0;
}
.hbk-carousel-btn:hover {
  background: var(--hbk-red);
  border-color: var(--hbk-red);
  color: var(--hbk-white);
}