/* ── Header / nav ───────────────────────────────────────────────────────── */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-block: var(--space-2);
}

.brand {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  text-decoration: none;
  color: var(--color-text);
}
.brand__leaf { flex: none; width: 30px; height: 30px; }
.brand__text { display: flex; flex-direction: column; line-height: 1; }
.brand__main {
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 1.15rem;
  color: var(--color-primary-dark);
  white-space: nowrap;
}
.brand__sub {
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.58rem;
  letter-spacing: 0.14em;
  color: var(--color-accent-dark);
  margin-top: 2px;
}

.nav-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-surface);
  cursor: pointer;
}
.nav-toggle__bars,
.nav-toggle__bars::before,
.nav-toggle__bars::after {
  content: "";
  display: block;
  width: 20px;
  height: 2px;
  background: var(--color-primary-dark);
  position: relative;
  transition: transform 0.15s ease;
}
.nav-toggle__bars::before { position: absolute; top: -6px; }
.nav-toggle__bars::after { position: absolute; top: 6px; }

.site-nav {
  display: none;
  flex-direction: column;
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  padding: var(--space-2);
  gap: var(--space-1);
}
.site-nav.is-open { display: flex; }
.site-nav a {
  text-decoration: none;
  padding: 0.6rem var(--space-1);
  border-radius: var(--radius-sm);
  font-weight: 500;
  color: var(--color-text);
}
.site-nav a:hover { background: var(--color-bg); }

@media (min-width: 768px) {
  .brand__leaf { width: 36px; height: 36px; }
  .brand__main { font-size: 1.4rem; }
  .brand__sub { font-size: 0.65rem; }

  .nav-toggle { display: none; }
  .site-nav {
    display: flex;
    flex-direction: row;
    position: static;
    border: none;
    padding: 0;
    gap: var(--space-3);
    background: transparent;
  }
}

/* ── Hero ───────────────────────────────────────────────────────────────── */
.hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  min-height: 62vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding-block: var(--space-5);
}

.hero__media {
  position: absolute;
  inset: 0;
  z-index: -2;
}
.hero__image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 65%;
  animation: hero-zoom 16s ease-out forwards;
}
.hero__overlay {
  position: absolute;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(60% 70% at 50% 40%, rgba(8, 18, 11, 0.55) 0%, rgba(8, 18, 11, 0.3) 60%, rgba(8, 18, 11, 0.15) 100%),
    linear-gradient(180deg, rgba(10, 20, 13, 0.55) 0%, rgba(10, 20, 13, 0.4) 55%, rgba(250, 248, 243, 0.97) 100%);
}

.hero__content {
  animation: hero-rise 0.9s cubic-bezier(0.22, 1, 0.36, 1) both;
  background: rgba(12, 24, 16, 0.42);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: var(--radius-lg);
  padding: var(--space-4) var(--space-3);
  max-width: 720px;
}

@supports not ((backdrop-filter: blur(1px)) or (-webkit-backdrop-filter: blur(1px))) {
  .hero__content { background: rgba(10, 20, 13, 0.62); }
}

.hero h1,
.hero .eyebrow {
  color: #fff;
}
.hero .eyebrow {
  display: inline-block;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.75rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: #DDF0E3;
  background: rgba(47, 107, 79, 0.55);
  border: 1px solid rgba(255, 255, 255, 0.35);
  padding: 0.4rem 0.9rem;
  border-radius: 999px;
  margin-bottom: var(--space-2);
}

.hero p {
  max-width: 620px;
  margin-inline: auto;
  margin-top: var(--space-2);
  font-size: 1.05rem;
  color: #F1F5F1;
  text-shadow: 0 1px 12px rgba(0, 0, 0, 0.25);
}

.hero__ctas {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-2);
  margin-top: var(--space-3);
}
.hero__ctas .btn--outline {
  background: rgba(255, 255, 255, 0.9);
  border-color: transparent;
}
.hero__ctas .btn--outline:hover {
  background: #fff;
  color: var(--color-primary-dark);
}

@keyframes hero-zoom {
  from { transform: scale(1.08); }
  to { transform: scale(1); }
}

@keyframes hero-rise {
  from { opacity: 0; transform: translateY(18px); }
  to { opacity: 1; transform: translateY(0); }
}

@media (prefers-reduced-motion: reduce) {
  .hero__image { animation: none; }
  .hero__content { animation: none; }
}

@media (min-width: 768px) {
  .hero { min-height: 72vh; }
}

/* ── Section headings ───────────────────────────────────────────────────── */
.section__heading {
  text-align: center;
  margin-bottom: var(--space-3);
}
.section__heading p {
  color: var(--color-text-muted);
  margin-top: var(--space-1);
}

/* ── Grids ──────────────────────────────────────────────────────────────── */
.product-grid,
.ebook-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-3);
}

@media (min-width: 600px) {
  .product-grid { grid-template-columns: repeat(2, 1fr); }
  .ebook-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (min-width: 1024px) {
  .product-grid { grid-template-columns: repeat(4, 1fr); }
}

/* ── Product detail layout ─────────────────────────────────────────────── */
.product-detail {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

@media (min-width: 1024px) {
  .product-detail {
    flex-direction: row;
    align-items: flex-start;
  }
  .product-detail__media,
  .product-detail__info {
    flex: 1 1 50%;
    min-width: 0;
  }
}

.product-detail__media img {
  width: 100%;
  aspect-ratio: 1 / 1;
  object-fit: contain;
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  padding: var(--space-3);
}

/* ── Ebook detail layout ────────────────────────────────────────────────── */
.ebook-detail {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

@media (min-width: 900px) {
  .ebook-detail { flex-direction: row; align-items: flex-start; }
  .ebook-detail__media,
  .ebook-detail__info { flex: 1 1 50%; min-width: 0; }
}

.ebook-detail__media img {
  width: 100%;
  max-width: 360px;
  margin-inline: auto;
  border-radius: var(--radius-md);
  box-shadow: 0 12px 30px rgba(31, 42, 32, 0.15);
}

/* ── Footer ─────────────────────────────────────────────────────────────── */
.site-footer {
  background: var(--color-primary-dark);
  color: #E9F1EC;
  padding-block: var(--space-4);
  margin-top: var(--space-5);
}
.site-footer a { color: #E9F1EC; text-decoration: underline; }
.site-footer__disclaimer {
  font-size: 0.85rem;
  color: #C7D8CD;
  max-width: 760px;
  margin-top: var(--space-2);
}
.site-footer__links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-top: var(--space-2);
  font-size: 0.85rem;
}