/* ===== Header ===== */
.s-header {
  position: fixed;
  inset-block-start: 0;
  inset-inline: 0;
  z-index: 200;
  background: var(--c-surface);
  border-block-end: 1px solid var(--c-border);
  transition: box-shadow .25s ease, background-color .25s ease;
}
.s-header.is-scrolled { box-shadow: var(--shadow-md); }

.s-header__inner {
  display: flex;
  align-items: center;
  gap: clamp(12px, 2.4vw, 24px);
  min-block-size: var(--header-h);
}

/* --- Brand (text wordmark) --- */
.s-header__brand {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 2px;
  margin-inline-end: auto;
  min-block-size: 44px;
  padding-block: 6px;
  text-decoration: none;
  color: inherit;
}
.s-header__brand-name {
  font-family: var(--font-head);
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: .08em;
  line-height: 1.1;
  color: var(--c-secondary);
  transition: color .2s ease;
}
.s-header__brand-sub {
  font-size: .6875rem;
  font-weight: 500;
  letter-spacing: .14em;
  text-transform: uppercase;
  line-height: 1.2;
  color: var(--c-muted);
}
.s-header__brand:hover .s-header__brand-name,
.s-header__brand:focus-visible .s-header__brand-name { color: var(--c-primary); }

/* --- Navigation --- */
.s-header__nav ul {
  display: flex;
  align-items: center;
  gap: 2px;
  margin: 0;
  padding: 0;
  list-style: none;
}
.s-header__link {
  position: relative;
  display: inline-flex;
  align-items: center;
  min-block-size: 44px;
  padding-inline: 12px;
  border-radius: var(--radius);
  font-family: var(--font-body);
  font-size: .9375rem;
  font-weight: 500;
  line-height: 1.6;
  color: var(--c-text);
  text-decoration: none;
  white-space: nowrap;
  transition: color .2s ease, background-color .2s ease;
}
.s-header__link::after {
  content: "";
  position: absolute;
  inset-block-end: 9px;
  inset-inline: 12px;
  height: 2px;
  border-radius: 2px;
  background: var(--c-primary);
  transform: scaleX(0);
  transform-origin: center;
  transition: transform .25s ease;
}
.s-header__link:hover,
.s-header__link:focus-visible { color: var(--c-primary); }
.s-header__link:hover::after,
.s-header__link:focus-visible::after { transform: scaleX(1); }
.s-header__link:focus-visible {
  outline: 2px solid var(--c-primary);
  outline-offset: 2px;
}

/* --- CTA --- */
.s-header__cta {
  min-block-size: 44px;
  padding-inline: 22px;
  box-shadow: var(--shadow-sm);
  white-space: nowrap;
  font-weight: 600;
}
.s-header__cta:hover { box-shadow: var(--shadow-md); }

/* --- Mobile toggle --- */
.s-header__toggle {
  display: none;
  align-items: center;
  justify-content: center;
  inline-size: 44px;
  block-size: 44px;
  padding: 0;
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  background: var(--c-surface);
  color: var(--c-secondary);
  cursor: pointer;
  transition: background-color .2s ease, border-color .2s ease, color .2s ease;
}
.s-header__toggle:hover { border-color: var(--c-primary); color: var(--c-primary); }
.s-header__toggle:focus-visible {
  outline: 2px solid var(--c-primary);
  outline-offset: 2px;
}
.s-header__toggle svg { inline-size: 24px; block-size: 24px; display: block; }
.s-header__toggle .i-close { display: none; }
.s-header.is-open .s-header__toggle .i-open { display: none; }
.s-header.is-open .s-header__toggle .i-close { display: block; }

/* ===== Responsive ===== */
@media (max-width: 900px) {
  .s-header__toggle { display: inline-flex; order: 3; }
  .s-header__cta { order: 2; padding-inline: 16px; font-size: .875rem; }

  .s-header__nav {
    position: absolute;
    inset-block-start: 100%;
    inset-inline: 0;
    order: 4;
    padding: 6px clamp(16px, 5vw, 28px) 20px;
    background: var(--c-surface);
    border-block-end: 1px solid var(--c-border);
    box-shadow: var(--shadow-md);
    max-block-size: calc(100vh - var(--header-h));
    overflow-y: auto;
    visibility: hidden;
    opacity: 0;
    transform: translateY(-10px);
    pointer-events: none;
    transition: opacity .22s ease, transform .22s ease, visibility .22s ease;
  }
  .s-header.is-open .s-header__nav {
    visibility: visible;
    opacity: 1;
    transform: none;
    pointer-events: auto;
  }
  .s-header__nav ul {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
  }
  .s-header__nav li + li { border-block-start: 1px solid var(--c-border); }
  .s-header__link {
    min-block-size: 48px;
    padding-inline: 4px;
    font-size: 1rem;
    border-radius: 0;
  }
  .s-header__link::after { display: none; }
}

@media (max-width: 600px) {
  .s-header__inner { gap: 8px; }
  .s-header__brand-name { font-size: 1.15rem; letter-spacing: .06em; }
  .s-header__brand-sub { display: none; }
  .s-header__cta {
    padding-inline: 12px;
    font-size: .8125rem;
    letter-spacing: 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  .s-header,
  .s-header__nav,
  .s-header__link,
  .s-header__link::after,
  .s-header__brand-name { transition: none; }
}