.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--rc-header-bg);
  backdrop-filter: blur(20px) saturate(1.35);
  border-bottom: 1px solid color-mix(in srgb, var(--rc-accent) 14%, transparent);
  box-shadow: 0 1px 0 color-mix(in srgb, var(--rc-accent) 8%, transparent);
}
[data-theme="light"] .site-header {
  background: rgb(255 255 255 / 0.88);
  border-bottom-color: rgb(15 23 42 / 0.08);
  box-shadow: 0 1px 0 rgb(15 23 42 / 0.04);
}
.header-inner {
  display: flex;
  align-items: center;
  gap: 20px;
  min-height: var(--rc-header-h);
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
  font-weight: 700;
  letter-spacing: -0.03em;
}
.brand-name {
  font-family: var(--rc-display);
  font-size: 1.08rem;
  line-height: 1;
}
.brand-name .rc-chat { color: var(--rc-accent); }

.nav-desktop {
  display: none;
  align-items: center;
  gap: 18px;
  font-size: 0.875rem;
  font-weight: 550;
  color: var(--rc-muted);
}
.nav-desktop a:hover,
.nav-desktop a[aria-current="page"] { color: var(--rc-ink); }
.nav-desktop a.nav-api {
  color: var(--rc-brand);
  font-weight: 700;
}

.header-tools {
  display: none;
  align-items: center;
  gap: 8px;
  margin-left: auto;
}
.header-mobile {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-left: auto;
}

.icon-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  flex-shrink: 0;
  border-radius: 12px;
  border: 1px solid color-mix(in srgb, var(--rc-accent) 18%, transparent);
  background: color-mix(in srgb, var(--rc-surface-solid) 55%, transparent);
  color: var(--rc-ink);
  transition: border-color 0.15s ease, background 0.15s ease, color 0.15s ease, box-shadow 0.15s ease;
}
.icon-btn svg {
  width: 22px;
  height: 22px;
  display: block;
  stroke: currentColor;
}
.icon-btn:hover,
.icon-btn:focus-visible {
  border-color: color-mix(in srgb, var(--rc-accent) 45%, transparent);
  color: var(--rc-accent);
  box-shadow: 0 0 18px color-mix(in srgb, var(--rc-accent) 18%, transparent);
  outline: none;
}

.lang-switch {
  display: flex;
  align-items: center;
  border: 1px solid var(--rc-border);
  border-radius: var(--rc-radius-sm);
  overflow: hidden;
}
.lang-switch a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 6px 8px;
  color: var(--rc-muted);
}
.lang-switch a[aria-current="page"] {
  background: var(--rc-surface-raised);
}
.lang-flag {
  width: 22px;
  height: 16px;
  border-radius: 2px;
  box-shadow: 0 0 0 1px rgba(0, 0, 0, 0.12);
  flex-shrink: 0;
  display: block;
}
.lang-switch a[aria-current="page"] .lang-flag {
  box-shadow: 0 0 0 1px color-mix(in srgb, var(--rc-accent) 55%, transparent);
}

.theme-toggle .icon-sun { display: none !important; }
.theme-toggle .icon-moon { display: block !important; }
[data-theme="light"] .theme-toggle .icon-sun { display: block !important; }
[data-theme="light"] .theme-toggle .icon-moon { display: none !important; }

.mobile-nav {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 90;
  background: var(--rc-overlay);
}
.mobile-nav.open { display: block; }
.mobile-panel {
  position: absolute;
  top: 0;
  right: 0;
  width: min(300px, 88vw);
  height: 100%;
  background: var(--rc-bg);
  border-left: 1px solid var(--rc-border);
  padding: 80px 24px 28px;
  display: flex;
  flex-direction: column;
  gap: 2px;
  overflow-y: auto;
}
.mobile-panel a:not(.btn) {
  padding: 12px 0;
  font-weight: 600;
  font-size: 0.98rem;
  border-bottom: 1px solid var(--rc-border);
}
.mobile-panel-tools {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin: 16px 0 8px;
}
.mobile-panel .btn { width: 100%; margin-top: 8px; }

.site-footer {
  border-top: 1px solid var(--rc-border);
  background: var(--rc-bg-alt);
  padding: 52px 0 24px;
}
.footer-grid {
  display: grid;
  gap: 28px;
}
.footer-brand { max-width: 300px; }
.footer-brand p {
  margin: 12px 0 0;
  color: var(--rc-muted);
  font-size: 0.88rem;
  line-height: 1.55;
}
.footer-col {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.footer-col h4 {
  margin: 0 0 6px;
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--rc-muted);
  font-weight: 650;
}
.footer-col a { color: var(--rc-ink); font-weight: 500; font-size: 0.88rem; }
.footer-col a:hover { color: var(--rc-accent); }
.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 16px;
  justify-content: space-between;
  margin-top: 36px;
  padding-top: 18px;
  border-top: 1px solid var(--rc-border);
  color: var(--rc-muted);
  font-size: 0.8rem;
}
.footer-discord-status { margin-top: 18px; }

@media (max-width: 959px) {
  .brand-name { font-size: 1rem; }
  .site-brand-mark { width: 30px; height: 30px; }
}

@media (min-width: 960px) {
  .nav-desktop,
  .header-tools { display: flex; }
  .header-mobile,
  .mobile-nav { display: none !important; }
  .footer-grid {
    grid-template-columns: 1.35fr 0.75fr 0.75fr 0.9fr;
  }
}