/* ==========================================================================
   Strikethrough Text — components.css
   Reusable UI: header, nav, footer, buttons, cards, badges, accordions,
   reviews carousel, scroll-to-top, pagination.
   ========================================================================== */

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.55rem;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.98rem;
  line-height: 1;
  padding: 0.85rem 1.4rem;
  border-radius: var(--radius-pill);
  border: 1.5px solid transparent;
  cursor: pointer;
  transition: transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease),
              background var(--dur) var(--ease), color var(--dur) var(--ease),
              border-color var(--dur) var(--ease);
  white-space: nowrap;
}
.btn:active { transform: translateY(1px); }
.btn__icon { width: 18px; height: 18px; flex: none; }

.btn--primary { background: var(--red); color: #fff; box-shadow: var(--shadow-red); }
.btn--primary:hover { background: var(--red-deep); color: #fff; transform: translateY(-2px); box-shadow: 0 14px 32px rgba(255, 67, 53, 0.36); }

.btn--secondary { background: var(--ink); color: #fff; }
.btn--secondary:hover { background: #000; color: #fff; transform: translateY(-2px); box-shadow: var(--shadow-md); }

.btn--ghost { background: transparent; color: var(--text-heading); border-color: var(--border); }
.btn--ghost:hover { border-color: var(--ink); color: var(--ink); background: var(--char-100); }

.btn--outline-light { background: rgba(255,255,255,0.06); color: #fff; border-color: rgba(255,255,255,0.28); }
.btn--outline-light:hover { background: rgba(255,255,255,0.14); color: #fff; }

.btn--sm { padding: 0.6rem 1.05rem; font-size: 0.9rem; }
.btn--lg { padding: 1rem 1.8rem; font-size: 1.05rem; }
.btn--block { width: 100%; }
.btn:disabled { opacity: 0.5; cursor: not-allowed; transform: none; box-shadow: none; }

/* ---------- Header / nav ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: saturate(180%) blur(14px);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 2px solid var(--red);
  transition: border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}
.site-header.is-scrolled {
  border-bottom-color: var(--red-deep);
  box-shadow: var(--shadow-sm);
}
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-5);
  height: var(--header-h);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  color: var(--ink);
  font-family: var(--font-display);
  font-weight: 700;
}
.brand:hover { color: var(--ink); }
.brand__mark { width: 36px; height: 36px; flex: none; }
.brand__name { font-size: 1.22rem; letter-spacing: -0.02em; }
.brand__name em {
  font-style: normal;
  color: var(--red);
  position: relative;
}
.brand__name em::after {
  content: "";
  position: absolute;
  left: -1px; right: -1px; top: 54%;
  height: 2px; background: var(--red); border-radius: 2px;
}
.brand__name b { font-weight: 700; }
.site-footer .brand { color: #fff; }
.site-footer .brand:hover { color: #fff; }

.nav__menu { display: flex; align-items: center; gap: 0.35rem; }
.nav__link {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.55rem 0.85rem;
  border-radius: var(--radius-pill);
  color: var(--ink);
  font-weight: 500;
  font-size: 0.95rem;
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease);
  cursor: pointer;
}
.nav__link:hover { background: var(--char-100); color: var(--ink); }
.nav__link:focus-visible { outline: 2px solid var(--red); outline-offset: 2px; }
.nav__link[aria-current="page"] { color: var(--red-deep); background: var(--red-soft); }
.nav__icon { width: 17px; height: 17px; flex: none; opacity: 0.75; }

.nav__actions { display: flex; align-items: center; gap: 0.75rem; }
.nav__menu-cta { display: none; }
.nav__close-row { display: none; }

.nav__toggle {
  display: none;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 0.85rem;
  border-radius: var(--radius-pill);
  border: 1.5px solid var(--border);
  color: var(--ink);
  font-weight: 600;
  font-size: 0.9rem;
}
.nav__toggle-bars { display: inline-flex; flex-direction: column; gap: 4px; width: 18px; }
.nav__toggle-bars span { display: block; height: 2px; background: currentColor; border-radius: 2px; transition: transform var(--dur) var(--ease), opacity var(--dur) var(--ease); }
.nav__close {
  width: 42px;
  height: 42px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border);
  border-radius: 50%;
  color: var(--ink);
  background: var(--char-100);
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease);
  cursor: pointer;
  position: relative;
  z-index: 1;
}
.nav__close:hover { background: var(--red-soft); color: var(--red-deep); }
.nav__close:focus-visible { outline: 2px solid var(--red); outline-offset: 2px; }
.nav__close svg { width: 21px; height: 21px; }
.nav__backdrop {
  position: fixed; inset: 0;
  background: rgba(20, 23, 28, 0.5);
  opacity: 0; visibility: hidden;
  transition: opacity var(--dur) var(--ease), visibility var(--dur) var(--ease);
  z-index: 90;
}
.nav__backdrop.is-open { opacity: 1; visibility: visible; }

/* ---------- Footer ---------- */
.site-footer {
  background: var(--char-900);
  color: var(--text-on-dark);
  padding-top: var(--space-8);
}
.footer__grid {
  display: grid;
  grid-template-columns: minmax(260px, 1.6fr) repeat(4, max-content);
  justify-content: space-between;
  gap: var(--space-6);
  padding-bottom: var(--space-7);
}
.footer__brand-desc { margin-top: var(--space-4); color: var(--char-400); font-size: 0.95rem; max-width: 34ch; }
.footer__heading {
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: #fff;
  margin-bottom: var(--space-4);
}
.footer__list { display: flex; flex-direction: column; gap: 0.15rem; }
.flink {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  white-space: nowrap;
  color: var(--char-400);
  padding: 0.35rem 0;
  font-size: 0.95rem;
  transition: color var(--dur) var(--ease), transform var(--dur) var(--ease);
}
.flink:hover { color: #fff; transform: translateX(3px); }
.flink__icon { width: 16px; height: 16px; flex: none; opacity: 0.7; }
.footer__bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding-block: var(--space-5);
  display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: var(--space-3);
}
.footer__copy { color: var(--char-400); font-size: 0.9rem; }
.footer__brand-link { color: #fff; font-weight: 600; }
.footer__brand-link:hover { color: var(--red); }
.footer__disclaimer {
  color: var(--char-500);
  font-size: 0.8rem;
  line-height: 1.6;
  padding-bottom: var(--space-6);
  max-width: 78ch;
}

/* ---------- Scroll to top ---------- */
.scroll-top {
  position: fixed;
  right: 20px; bottom: 20px;
  z-index: 80;
  width: 46px; height: 46px;
  display: grid; place-items: center;
  border-radius: 50%;
  background: var(--ink);
  color: #fff;
  box-shadow: var(--shadow-lg);
  opacity: 0; visibility: hidden;
  transform: translateY(12px);
  transition: opacity var(--dur) var(--ease), visibility var(--dur) var(--ease), transform var(--dur) var(--ease), background var(--dur) var(--ease);
}
.scroll-top svg { width: 20px; height: 20px; }
.scroll-top.is-visible { opacity: 1; visibility: visible; transform: none; }
.scroll-top:hover { background: var(--red); }

/* ---------- Cards ---------- */
.card {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease), border-color var(--dur) var(--ease);
}
.card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); border-color: transparent; }
.card__media { aspect-ratio: 16 / 9; overflow: hidden; background: var(--char-100); }
.card__media img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s var(--ease); }
.card:hover .card__media img { transform: scale(1.05); }
.card__body { padding: var(--space-5); display: flex; flex-direction: column; gap: var(--space-3); flex: 1; }
.card__meta { display: flex; align-items: center; gap: 0.5rem; font-size: 0.8rem; color: var(--text-muted); }
.card__title { font-size: var(--fs-h4); line-height: 1.32; }
.card__title a { color: var(--text-heading); }
.card__title a:hover { color: var(--red-deep); }
.card__excerpt { font-size: 0.95rem; color: var(--text-muted); flex: 1; }
.card__link {
  display: inline-flex; align-items: center; gap: 0.4rem;
  font-weight: 600; font-size: 0.9rem; color: var(--red-deep);
  font-family: var(--font-display);
}
.card__link svg { width: 16px; height: 16px; transition: transform var(--dur) var(--ease); }
.card__link:hover { color: var(--ink); }
.card__link:hover svg { transform: translateX(3px); }

/* Category chip */
.chip {
  display: inline-flex; align-items: center;
  font-family: var(--font-mono);
  font-size: 0.68rem; font-weight: 600;
  letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--red-deep);
  background: var(--red-soft);
  padding: 0.28rem 0.65rem;
  border-radius: var(--radius-pill);
}
.chip--muted { color: var(--char-500); background: var(--char-100); }

/* ---------- Accordion (FAQ) ---------- */
.accordion { border-top: 1px solid var(--border); }
.accordion__item {
  border-bottom: 1px solid var(--border);
  transition: background var(--dur) var(--ease);
}
.accordion__trigger {
  width: 100%;
  display: flex; align-items: center; justify-content: space-between; gap: 1rem;
  text-align: left;
  padding: 1.15rem 0.75rem 1.15rem 0.25rem;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.02rem;
  line-height: 1.4;
  color: var(--text-heading);
  transition: color var(--dur) var(--ease), padding-left var(--dur) var(--ease);
}
.accordion__trigger:hover { color: var(--red-deep); padding-left: 0.6rem; }
.accordion__trigger[aria-expanded="true"] { color: var(--red-deep); }
.accordion__icon { width: 22px; height: 22px; flex: none; transition: transform var(--dur) var(--ease); color: var(--red); }
.accordion__trigger[aria-expanded="true"] .accordion__icon { transform: rotate(45deg); }
.accordion__panel { overflow: hidden; }
.accordion__panel.is-animating { transition: height 320ms var(--ease); }
.accordion__panel p { padding: 0 0.25rem 1.25rem; color: var(--text-muted); font-size: 0.96rem; }
.accordion__panel code,
.accordion__panel kbd {
  font-family: var(--font-mono);
  font-size: 0.82em;
  background: var(--char-100);
  border: 1px solid var(--border);
  border-radius: 5px;
  padding: 0.1em 0.4em;
  color: var(--ink);
  white-space: nowrap;
}
.accordion h3 { margin: 0; }

/* Two-column FAQ board */
.faq-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0 clamp(1.5rem, 0.5rem + 3vw, 3.5rem);
  align-items: start;
}

/* ---------- Reviews carousel ---------- */
.reviews__top { display: flex; align-items: flex-end; justify-content: space-between; gap: var(--space-5); flex-wrap: wrap; margin-bottom: var(--space-6); }
.reviews__score { display: flex; align-items: center; gap: 0.75rem; }
.reviews__stars { display: inline-flex; gap: 2px; color: var(--rating); }
.reviews__stars svg { width: 20px; height: 20px; }
.reviews__score-num { font-family: var(--font-display); font-weight: 700; color: var(--ink); }
.reviews__controls { display: flex; gap: 0.5rem; }
.reviews__btn {
  width: 42px; height: 42px; display: grid; place-items: center;
  border-radius: 50%; border: 1.5px solid var(--border); color: var(--ink);
  transition: background var(--dur) var(--ease), border-color var(--dur) var(--ease), color var(--dur) var(--ease);
}
.reviews__btn:hover { background: var(--ink); border-color: var(--ink); color: #fff; }
.reviews__btn svg { width: 18px; height: 18px; }
.reviews__viewport { overflow: hidden; }
.reviews__track { display: flex; gap: var(--space-5); transition: transform 0.5s var(--ease); }
.review-card {
  flex: 0 0 calc((100% - 2 * var(--space-5)) / 3);
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  display: flex; flex-direction: column; gap: var(--space-3);
}
.review-card__stars { display: inline-flex; gap: 2px; color: var(--rating); }
.review-card__stars svg { width: 17px; height: 17px; }
.review-card__text { color: var(--text-body); font-size: 0.98rem; }
.review-card__who { display: flex; align-items: center; gap: 0.7rem; margin-top: auto; }
.review-card__avatar {
  width: 42px; height: 42px; border-radius: 50%;
  display: grid; place-items: center;
  background: var(--ink); color: #fff;
  font-family: var(--font-display); font-weight: 700; font-size: 0.95rem;
}
.review-card__name { font-weight: 600; color: var(--ink); font-size: 0.95rem; }
.review-card__role { font-size: 0.82rem; color: var(--text-muted); }

/* ---------- Pagination ---------- */
.pagination {
  display: flex; align-items: center; justify-content: center; gap: 0.4rem;
  margin-top: var(--space-7); flex-wrap: wrap;
}
.pagination__link, .pagination__current {
  min-width: 44px; height: 44px;
  display: inline-flex; align-items: center; justify-content: center;
  padding: 0 0.75rem;
  border-radius: var(--radius-sm);
  font-family: var(--font-display); font-weight: 600; font-size: 0.95rem;
  border: 1.5px solid var(--border);
}
.pagination__link { color: var(--ink); background: var(--white); transition: background var(--dur) var(--ease), border-color var(--dur) var(--ease); }
.pagination__link:hover { background: var(--char-100); border-color: var(--ink); }
.pagination__current { color: #fff; background: var(--red); border-color: var(--red); }
.pagination__gap { color: var(--text-muted); padding-inline: 0.25rem; }

/* ---------- Note block ---------- */
.note-block {
  background: linear-gradient(120deg, var(--red-soft), #fff);
  border: 1px solid var(--char-200);
  border-left: 4px solid var(--red);
  border-radius: var(--radius-md);
  padding: var(--space-6);
}
.note-block__title { font-size: var(--fs-h3); margin-bottom: var(--space-3); }