/* Landing site topbar */
:root {
  --inimark-nav-h: 64px;
}

.navbar,
.navbar *,
.navbar *::before,
.navbar *::after {
  box-sizing: border-box;
}

.navbar {
  --nav-h: var(--inimark-nav-h);
  --nav-max: 1120px;
  --nav-bg: rgba(250, 250, 250, 0.86);
  --nav-border: #e0e0e0;
  --nav-text: #0a0a0a;
  --nav-text-muted: #5c5c5c;
  --nav-text-faint: #8a8a8a;
  --nav-plate: #e8e8e8;
  --nav-surface: #ffffff;
  --nav-border-strong: #c8c8c8;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 10050;
  height: var(--nav-h);
  background: var(--nav-bg);
  backdrop-filter: blur(16px) saturate(160%);
  -webkit-backdrop-filter: blur(16px) saturate(160%);
  border-bottom: 1px solid var(--nav-border);
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  font-size: 16px;
  line-height: 1.2;
  -webkit-font-smoothing: antialiased;
}

html[data-site-theme="dark"] .navbar {
  --nav-bg: rgba(10, 10, 10, 0.9);
  --nav-border: #2a2a2a;
  --nav-text: #f0f0f0;
  --nav-text-muted: #a3a3a3;
  --nav-text-faint: #737373;
  --nav-plate: #262626;
  --nav-surface: #161616;
  --nav-border-strong: #3d3d3d;
}

.nav-container {
  max-width: var(--nav-max);
  margin: 0 auto;
  padding: 0 24px;
  height: 100%;
  display: flex;
  align-items: center;
  gap: 28px;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 17.6px;
  letter-spacing: -0.02em;
  color: var(--nav-text);
  text-decoration: none;
  flex-shrink: 0;
}

.nav-logo img {
  display: block;
  width: 28px;
  height: 28px;
  border-radius: 7px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}

.nav-links a {
  padding: 8px 12px;
  border-radius: 8px;
  font-size: 14.72px;
  color: var(--nav-text-muted);
  font-weight: 500;
  text-decoration: none;
  line-height: 1.2;
  transition: color 0.2s cubic-bezier(0.4, 0, 0.2, 1),
    background 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--nav-text);
  background: var(--nav-plate);
}

.nav-right {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

.nav-lang {
  display: flex;
  align-items: center;
  gap: 2px;
  font-size: 13.6px;
  color: var(--nav-text-faint);
  padding-left: 12px;
  border-left: 1px solid var(--nav-border);
}

.nav-lang a {
  padding: 4px 8px;
  border-radius: 6px;
  font-weight: 500;
  color: inherit;
  text-decoration: none;
  line-height: 1.2;
  transition: background 0.2s, color 0.2s;
}

.nav-lang a:hover {
  background: var(--nav-plate);
  color: var(--nav-text);
}

.nav-lang a.active {
  color: var(--nav-text);
  background: var(--nav-plate);
  font-weight: 600;
}

.nav-theme-btn {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  border: 1px solid var(--nav-border);
  background: var(--nav-surface);
  color: var(--nav-text-muted);
  cursor: pointer;
  display: grid;
  place-items: center;
  padding: 0;
  flex-shrink: 0;
  line-height: 0;
  transition: color 0.15s, border-color 0.15s, background 0.15s;
}

.nav-theme-btn:hover {
  color: var(--nav-text);
  border-color: var(--nav-border-strong);
}

.nav-theme-btn svg {
  width: 16px;
  height: 16px;
  display: block;
}

html[data-site-theme="dark"] .nav-theme-btn .icon-sun {
  display: block;
}

html[data-site-theme="dark"] .nav-theme-btn .icon-moon {
  display: none;
}

html[data-site-theme="light"] .nav-theme-btn .icon-sun,
html:not([data-site-theme]) .nav-theme-btn .icon-sun {
  display: none;
}

html[data-site-theme="light"] .nav-theme-btn .icon-moon,
html:not([data-site-theme]) .nav-theme-btn .icon-moon {
  display: block;
}

.nav-github {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 1px solid var(--nav-border);
  background: var(--nav-surface);
  display: grid;
  place-items: center;
  color: var(--nav-text-muted);
  text-decoration: none;
  line-height: 0;
  flex-shrink: 0;
  transition: color 0.2s, border-color 0.2s, transform 0.2s;
}

.nav-github:hover {
  color: var(--nav-text);
  border-color: var(--nav-border-strong);
  transform: translateY(-1px);
}

.nav-github svg {
  width: 18px;
  height: 18px;
  display: block;
}

.nav-toggle {
  display: none;
  margin-left: auto;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  color: var(--nav-text);
}

.nav-toggle svg {
  width: 22px;
  height: 22px;
}

@media (max-width: 720px) {
  .nav-links,
  .nav-right {
    display: none;
  }

  .nav-toggle {
    display: inline-flex;
  }

  .navbar.open .nav-links,
  .navbar.open .nav-right {
    display: flex;
    flex-direction: column;
    align-items: stretch;
    position: absolute;
    left: 0;
    right: 0;
    top: var(--nav-h);
    background: var(--nav-bg);
    border-bottom: 1px solid var(--nav-border);
    padding: 12px 16px 16px;
    gap: 8px;
  }

  .navbar.open .nav-right {
    position: static;
    margin: 0;
    border: none;
    padding: 0;
  }

  .navbar.open .nav-lang {
    border: none;
    padding: 0;
  }

  .navbar.open .nav-container {
    flex-wrap: wrap;
  }
}