/* Components shared by the scanner (app.css) and the reading pages
   (content.css). Loaded after tokens.css and before either of those. */

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  -webkit-text-size-adjust: 100%;
  -webkit-tap-highlight-color: transparent;
}

::selection { background: var(--accent-soft); }

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
}

/* Icons come from the <symbol> sprite in app.html or are inlined. */
.ico {
  width: 20px; height: 20px;
  flex: 0 0 auto;
  display: block;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.sprite { position: absolute; width: 0; height: 0; overflow: hidden; }

/* ---------- Brand ---------- */

.brand {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  color: var(--text);
  text-decoration: none;
  border-radius: var(--radius-sm);
}
.brand-mark { width: 26px; height: 26px; flex: 0 0 auto; fill: none; stroke-width: 2; stroke-linejoin: round; stroke-linecap: round; }
.brand-mark .mark-doc { stroke: var(--accent); }
.brand-mark .mark-line { stroke: var(--ok); }
.brand-name { font-size: 17px; font-weight: 650; letter-spacing: -0.01em; }

/* ---------- Buttons ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--sp-2);
  min-height: var(--ctl);
  padding: 0 14px;
  border: 0;
  border-radius: var(--radius-pill);
  background: var(--bg-raised);
  color: var(--text);
  font: inherit;
  font-size: 14px;
  font-weight: 500;
  line-height: 1.2;
  text-decoration: none;
  white-space: nowrap;
  cursor: pointer;
  user-select: none;
  -webkit-user-select: none;
  touch-action: manipulation;
  transition: background var(--dur-1), color var(--dur-1), transform var(--dur-1);
}
.btn:hover:not(:disabled) { background: var(--btn-hover-bg); }
.btn:active:not(:disabled) { transform: scale(0.97); }
.btn:disabled { opacity: 0.45; cursor: default; }

.btn.primary {
  background: var(--accent);
  color: var(--on-accent);
  font-weight: 600;
}
.btn.primary:hover:not(:disabled) { background: var(--accent-hover); }

.btn.ghost { background: transparent; color: var(--text-dim); }
.btn.ghost:hover:not(:disabled) { background: var(--bg-raised); color: var(--text); }

.btn.icon { width: var(--ctl); padding: 0; }

.btn.lg { min-height: 48px; padding: 0 22px; font-size: 16px; }

/* ---------- Popover menus (language switcher, "more" menu) ----------
   A <details>, so it opens without JS; menus.js adds outside-click, Escape
   and close-on-choose. */

.menu { position: relative; flex: 0 0 auto; }
.menu > summary { list-style: none; }
.menu > summary::-webkit-details-marker { display: none; }
.menu[open] > summary { background: var(--accent-soft); color: var(--accent); }
.menu-list {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  z-index: 60;
  display: flex;
  flex-direction: column;
  min-width: 180px;
  max-height: min(70vh, 420px);
  overflow-y: auto;
  padding: 6px;
  background: var(--bg-panel);
  border-radius: var(--radius);
  box-shadow: var(--shadow-3), 0 0 0 1px var(--border);
}
.menu.up .menu-list { top: auto; bottom: calc(100% + 10px); }
/* For a menu near the left edge of its bar: grow to the right instead. */
.menu.start .menu-list { left: 0; right: auto; }
.menu-list a,
.menu-list button {
  display: flex;
  align-items: center;
  gap: 10px;
  min-height: 36px;
  padding: 0 10px;
  border: 0;
  border-radius: var(--radius-sm);
  background: none;
  color: var(--text);
  font: inherit;
  font-size: 14px;
  text-align: left;
  text-decoration: none;
  white-space: nowrap;
  cursor: pointer;
}
.menu-list a:hover,
.menu-list button:hover:not(:disabled) { background: var(--bg-raised); }
.menu-list button:disabled { opacity: 0.4; cursor: default; }
.menu-list .ico { width: 18px; height: 18px; color: var(--text-dim); }
.menu-list a.current { color: var(--accent); font-weight: 600; }
.menu-list .danger, .menu-list .danger .ico { color: var(--danger); }
/* Radio items (the filter menu): a check mark on the current one. */
.menu-list .menu-check { margin-left: auto; padding-left: 6px; box-sizing: content-box; color: var(--accent); visibility: hidden; }
.menu-list [aria-checked="true"] .menu-check { visibility: visible; }
/* Their icons are the choice itself (grey must read as grey), so not dimmed. */
.menu-list [role="menuitemradio"] .ico:first-child { color: var(--text); }
.menu-sep { height: 1px; margin: 6px 4px; background: var(--border); }

/* Theme switcher: one button cycling system -> light -> dark (theme.js). The
   icon shown is the current mode; no data-theme on <html> means "system". */
.theme-toggle svg { display: none; }
:root:not([data-theme]) .theme-toggle .icon-system,
:root[data-theme="light"] .theme-toggle .icon-light,
:root[data-theme="dark"] .theme-toggle .icon-dark { display: block; }

/* ---------- Chip ---------- */

.chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 12px 5px 10px;
  border-radius: var(--radius-pill);
  background: var(--accent-soft);
  color: var(--accent);
  font-size: var(--fs-sm);
  font-weight: 600;
}
.chip .ico { width: 15px; height: 15px; }

/* ---------- Footer ---------- */

.footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--sp-2) var(--sp-5);
  font-size: var(--fs-sm);
  color: var(--text-dim);
}
.footer nav { display: flex; flex-wrap: wrap; gap: var(--sp-1) var(--sp-4); }
.footer a {
  color: var(--text-dim);
  text-decoration: none;
  border-radius: 4px;
  transition: color var(--dur-1);
}
.footer a:hover { color: var(--text); }
.footer-nav a[aria-current="page"] { color: var(--text); font-weight: 600; }

/* ---------- Touch ---------- */

@media (hover: none) {
  .btn { min-height: var(--tap); }
  .btn.icon { width: var(--tap); }
  .menu-list a, .menu-list button { min-height: var(--tap); }
  .footer a { padding: 6px 0; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

[hidden] { display: none !important; }