:root {
  --bg: #ffffff;
  --text: #111827;
  --muted: #6b7280;
  --border: #e5e7eb;
  --hover: #f3f4f6;
  --accent: #2563eb;
  --accent-soft: #eff6ff;
  --max: 1100px;
}
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.6 system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
}
a { color: inherit; text-decoration: none; }
a:focus-visible,
button:focus-visible,
input:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

.container { max-width: var(--max); margin: 0 auto; padding: 0 16px; }

.skip-link {
  position: absolute; left: -9999px; top: 0;
  background: var(--text); color: #fff; padding: 8px 12px;
}
.skip-link:focus { left: 8px; top: 8px; z-index: 10; }

/* Header */
.site-header {
  position: relative;
  border-bottom: 1px solid var(--border);
  background: var(--bg);
}

.header-inner {
  display: grid;
  grid-template-columns: 1fr minmax(0, 420px) 1fr;
  grid-template-areas: "logo search menu";
  align-items: center;
  gap: 12px 16px;
  min-height: 64px;
}

.brand { grid-area: logo; justify-self: start; display: inline-block; }
.brand img { display: block; height: 36px; width: auto; }

/* Search */
.search { grid-area: search; position: relative; }
.search input {
  width: 100%;
  height: 40px;
  padding: 0 44px 0 14px;
  font: inherit;
  color: var(--text);
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
}
.search input::placeholder { color: var(--muted); }
.search button {
  position: absolute; top: 0; right: 0;
  width: 44px; height: 40px;
  display: flex; align-items: center; justify-content: center;
  color: var(--muted); background: none; border: 0; cursor: pointer;
}
.search button:hover { color: var(--text); }

/* Menu button */
.menu { grid-area: menu; justify-self: end; }
.menu-toggle {
  width: 40px; height: 40px;
  display: flex; align-items: center; justify-content: center;
  color: var(--text);
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  cursor: pointer;
}
.menu-toggle:hover { background: var(--hover); }
.menu-toggle .icon-close { display: none; }
.menu-toggle[aria-expanded="true"] .icon-open { display: none; }
.menu-toggle[aria-expanded="true"] .icon-close { display: block; }
.menu-toggle[aria-expanded="true"] { background: var(--hover); }

/* Menu panel (mobile: full width under header) */
.menu-panel {
  position: absolute;
  top: calc(100% + 8px);
  left: 16px;
  right: 16px;
  padding: 8px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 12px;
  box-shadow: 0 8px 24px rgba(17, 24, 39, 0.08);
  z-index: 20;
}
.menu-panel[hidden] { display: none; }
.menu-panel ul { margin: 0; padding: 0; list-style: none; display: grid; gap: 4px; }
.menu-panel a {
  display: flex; align-items: center; gap: 12px;
  padding: 12px;
  border-radius: 8px;
  font-weight: 500;
}
.menu-panel a span { flex: 1; }
.item-icon { color: var(--muted); flex-shrink: 0; }
.item-arrow { color: var(--muted); flex-shrink: 0; }
.menu-panel a:hover { background: var(--hover); }
.menu-panel a[aria-current="page"] { background: var(--accent-soft); color: var(--accent); }
.menu-panel a[aria-current="page"] .item-icon,
.menu-panel a[aria-current="page"] .item-arrow { color: var(--accent); }

/* Desktop: small dropdown at the right */
@media (min-width: 861px) {
  .menu { position: relative; }
  .menu-panel { left: auto; right: 0; top: calc(100% + 12px); width: 260px; }
}

/* Mobile layout */
@media (max-width: 860px) {
  .header-inner {
    grid-template-columns: 1fr auto;
    grid-template-areas:
      "logo menu"
      "search search";
    padding-top: 10px;
    padding-bottom: 12px;
    min-height: 0;
  }
}