.filecast-header {
  --header-surface: #fff;
  --header-text: #20283e;
  --header-muted: #626e85;
  --header-accent: #5550da;
  --header-border: #dce2ee;
  --header-tint: #eeedff;
  --header-track: #eef0f6;
  background: var(--header-surface);
  color: var(--header-text);
  border-bottom: 1px solid var(--header-border);
  font:
    13px/1.4 system-ui,
    sans-serif;
}
.dark .filecast-header {
  --header-surface: #192438;
  --header-text: #e6ebf5;
  --header-muted: #adbad0;
  --header-accent: #b4adff;
  --header-border: #334158;
  --header-tint: #282843;
  --header-track: #273449;
}
.filecast-header-inner {
  min-height: 76px;
  max-width: 1440px;
  margin: 0 auto;
  padding: 16px 32px;
  display: flex;
  align-items: center;
  gap: 28px;
}
.filecast-header a {
  text-decoration: none;
}
.filecast-brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
  color: var(--header-text);
  font-size: 26px;
  font-weight: 750;
  letter-spacing: -1.2px;
}
.filecast-brand-icon {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border-radius: 9px;
  background: #6558dc;
  color: white;
}
.filecast-brand-dot {
  color: var(--header-accent);
}
.filecast-nav {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-left: auto;
}
.filecast-nav a {
  padding: 8px 10px;
  border-radius: 7px;
  color: var(--header-muted);
  white-space: nowrap;
}
.filecast-nav a:hover,
.filecast-nav a[aria-current='page'] {
  color: var(--header-accent);
  background: var(--header-tint);
}
.filecast-nav a[aria-current='page'] {
  font-weight: 650;
}
.filecast-header-actions {
  display: flex;
  align-items: center;
  gap: 18px;
}
.filecast-header .filecast-session {
  padding: 8px 0;
  background: transparent;
  border: 0;
  font: inherit;
  color: var(--header-muted);
  cursor: pointer;
  white-space: nowrap;
}
.filecast-header .filecast-session:hover {
  color: var(--header-accent);
}
.filecast-header .theme-control {
  display: flex;
  color: var(--header-muted);
}
.filecast-header .theme-control .theme-switch {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 64px;
  height: 32px;
  padding: 0 8px;
  color: inherit;
  background: var(--header-track);
  border: 1px solid var(--header-border);
  border-radius: 18px;
  cursor: pointer;
}
.filecast-header .theme-control .theme-switch-thumb {
  position: absolute;
  top: 3px;
  left: 3px;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--header-surface);
  box-shadow: 0 1px 4px #0002;
  transition: transform 150ms ease;
}
.filecast-header .theme-switch[aria-checked='true'] .theme-switch-thumb {
  transform: translateX(32px);
}
.filecast-header .theme-switch svg {
  position: relative;
  z-index: 1;
}
.filecast-header .theme-switch[aria-checked='false'] svg:first-of-type,
.filecast-header .theme-switch[aria-checked='true'] svg:last-of-type {
  color: var(--header-accent);
}
.filecast-header .theme-switch:hover {
  border-color: var(--header-accent);
}
.filecast-header [hidden] {
  display: none !important;
}
.filecast-header :is(a, button):focus-visible {
  outline: 2px solid var(--header-accent);
  outline-offset: 3px;
}
.filecast-header-error {
  margin: 12px 24px;
  color: #c33b35;
}
.dark .filecast-header-error {
  color: #ffb0a6;
}
@media (max-width: 800px) {
  .filecast-header-inner {
    flex-wrap: wrap;
    gap: 12px;
    padding: 14px 18px 12px;
  }
  .filecast-header-actions {
    margin-left: auto;
    gap: 14px;
  }
  .filecast-nav {
    order: 3;
    width: 100%;
    margin-left: 0;
    gap: 4px;
  }
  .filecast-nav a {
    padding: 7px 9px;
    font-size: 12px;
  }
  .filecast-brand {
    font-size: 24px;
  }
}
@media (prefers-reduced-motion: reduce) {
  .filecast-header .theme-control .theme-switch-thumb {
    transition: none;
  }
}