/* Shared site chrome — ONE source for home, essay, deck.
   Home imports this from src/style.css.
   Essay/deck load it as <link rel="stylesheet" href=".../chrome.css">. */

:root {
  --chrome-bg: #ffffff;
  --chrome-text: #111111;
  --chrome-muted: #999999;
  --chrome-border: #e4e4e4;
  --chrome-max: min(100rem, calc(100vw - 3rem));
  --nav-h: 52px;
  --header-h: 52px;
  --chrome-pad: 48px;
}

html.dark,
:root[data-theme="dark"] {
  --chrome-bg: #0a0a0a;
  --chrome-text: #f5f5f5;
  --chrome-muted: #737373;
  --chrome-border: #262626;
}

@media (max-width: 860px) {
  :root { --chrome-pad: 32px; }
}
@media (max-width: 640px) {
  :root { --chrome-pad: 24px; }
}


/* Prefer essay/home ink tokens when present */
html {
  --chrome-bg: var(--bg, var(--chrome-bg));
  --chrome-text: var(--ink, var(--text, var(--chrome-text)));
  --chrome-muted: var(--ink-muted, var(--text-muted, var(--chrome-muted)));
  --chrome-border: var(--rule, var(--border, var(--chrome-border)));
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 1000;
  padding: 0.5rem 0.75rem;
  background: var(--chrome-text);
  color: var(--chrome-bg);
}
.skip-link:focus {
  left: 1rem;
  top: 1rem;
}

/* —— Header —— */
.site-header,
.site-header.portfolio-chrome {
  position: sticky !important;
  top: 0 !important;
  left: 0 !important;
  right: 0 !important;
  z-index: 100 !important;
  height: var(--nav-h) !important;
  min-height: var(--nav-h) !important;
  margin: 0 !important;
  padding: 0 !important;
  border: none !important;
  border-bottom: 1px solid var(--chrome-border) !important;
  border-radius: 0 !important;
  background: var(--chrome-bg) !important;
  backdrop-filter: none !important;
  box-shadow: none !important;
}

.site-header-inner {
  box-sizing: border-box !important;
  max-width: var(--chrome-max) !important;
  width: 100% !important;
  height: var(--nav-h) !important;
  min-height: var(--nav-h) !important;
  margin: 0 auto !important;
  padding: 0 var(--chrome-pad) !important;
  display: flex !important;
  align-items: center !important;
  justify-content: space-between !important;
  gap: 1rem !important;
  border: none !important;
  border-radius: 0 !important;
  background: transparent !important;
  box-shadow: none !important;
}


.site-header .brand,
.site-header .site-wordmark,
.site-header a.brand {
  position: relative;
  display: inline-block;
  flex-shrink: 0;
  font-family: "Fraunces", Georgia, "Times New Roman", serif;
  font-size: 16px;
  font-weight: 500;
  letter-spacing: -0.01em;
  color: var(--chrome-text);
  text-decoration: none;
  line-height: 1.2;
}

.brand-fill {
  display: inline-block;
}

.brand-reveal {
  position: absolute;
  left: 0;
  top: 0;
  color: transparent;
  -webkit-text-stroke: 1px var(--chrome-text);
  text-stroke: 1px var(--chrome-text);
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.15s ease;
  white-space: nowrap;
  -webkit-mask-image: radial-gradient(circle 0px at 50% 50%, #000 0%, transparent 70%);
  mask-image: radial-gradient(circle 0px at 50% 50%, #000 0%, transparent 70%);
  -webkit-mask-mode: alpha;
  mask-mode: alpha;
}

.brand.is-hot .brand-reveal {
  opacity: 1;
}

@media (hover: none), (pointer: coarse) {
  .brand-reveal { display: none !important; }
}

@media (prefers-reduced-motion: reduce) {
  .brand-reveal { display: none !important; }
}


.header-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-left: auto;
  min-width: 0;
}

.crumb-back {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  color: var(--chrome-muted);
  text-decoration: none;
  font-size: 13px;
  border: none;
  background: none;
  padding: 0;
}
.crumb-back:hover { color: var(--chrome-text); }

.site-header nav.site-nav {
  display: flex;
  align-items: center;
  gap: 1.25rem;
}

.site-header nav.site-nav a,
.site-nav a {
  position: relative;
  font-size: 13px;
  color: var(--chrome-muted);
  text-decoration: none;
  letter-spacing: 0.01em;
  white-space: nowrap;
  padding-bottom: 3px;
  background-image: linear-gradient(var(--chrome-text), var(--chrome-text));
  background-repeat: no-repeat;
  background-position: 0 100%;
  background-size: 0% 1.5px;
  transition: color 0.15s ease, background-size 0.2s ease;
}
.site-header nav.site-nav a:hover,
.site-header nav.site-nav a:focus-visible,
.site-nav a:hover,
.site-nav a.is-active {
  color: var(--chrome-text);
  background-size: 100% 1.5px;
}

/* Mobile menu */
.nav-menu {
  display: none;
  position: relative;
}
.nav-menu > summary {
  list-style: none;
  cursor: pointer;
  font-size: 12px;
  color: var(--chrome-muted);
  border: 1px solid var(--chrome-border);
  border-radius: 6px;
  padding: 0.35rem 0.6rem;
  min-height: 44px;
  display: inline-flex;
  align-items: center;
}
.nav-menu > summary::-webkit-details-marker { display: none; }
.nav-menu-panel {
  position: absolute;
  right: 0;
  top: calc(100% + 0.4rem);
  min-width: 10rem;
  background: var(--chrome-bg);
  border: 1px solid var(--chrome-border);
  border-radius: 8px;
  padding: 0.35rem;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
  z-index: 50;
}
.nav-menu-panel a {
  display: block;
  padding: 0.65rem 0.75rem;
  font-size: 14px;
  color: var(--chrome-muted);
  text-decoration: none;
  border-radius: 6px;
}
.nav-menu-panel a:hover {
  background: color-mix(in srgb, var(--chrome-border) 45%, transparent);
  color: var(--chrome-text);
}

.site-header [data-theme-toggle],
.site-header .theme-toggle,
.site-header .theme-toggle-inline {
  font-size: 12px;
  color: var(--chrome-muted);
  border: 1px solid var(--chrome-border);
  background: transparent;
  border-radius: 6px;
  padding: 0.35rem 0.55rem;
  min-height: 32px;
  cursor: pointer;
  transition: color 0.15s ease, border-color 0.15s ease;
}
.site-header [data-theme-toggle]:hover,
.site-header .theme-toggle:hover,
.site-header .theme-toggle-inline:hover {
  color: var(--chrome-text);
  border-color: var(--chrome-muted);
}

/* Legacy floating FAB — never show */
#theme-toggle.theme-toggle {
  display: none !important;
}

@media (max-width: 860px) {
  .site-header nav.site-nav { display: none; }
  .nav-menu { display: block; }
  .crumb-back { display: none; }
}

/* Deck keeps sticky header too */
body:has(.deck) .site-header {
  position: sticky !important;
}

/* —— Top progress (home + essay) —— */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: var(--chrome-text);
  transform-origin: left center;
  transform: scaleX(0);
  z-index: 200;
  pointer-events: none;
  opacity: 0.35;
}

@media (prefers-reduced-motion: reduce) {
  .scroll-progress { display: none !important; }
}