/*
 * TurtleLab: the site menu (the hamburger), in the toolbar and page headers.
 * Copyright (C) 2026 Eric Brown. Licensed under the GNU AGPL-3.0 or later.
 * See COPYING in the folder above this one.
 *
 * A copy of the idea behind the rest of the site's menu, in plain CSS with no
 * script: a hidden checkbox remembers whether the menu is open, the hamburger
 * is its label, and a see-through cover over the page (also a label for the
 * same checkbox) closes the menu when you click anywhere else.
 *
 * Every rule starts with .site-menu on purpose: the toolbar has a general rule
 * for labels (.toolbar label) that would otherwise win and leave the cover
 * over the page all the time, blocking every click.
 */

.site-menu {
  position: relative;
  z-index: 30; /* above the palettes, notes and everything else in the app */
}

.site-menu .site-menu-trigger {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.site-menu .site-menu-icon {
  position: relative;
  z-index: 2;
  display: block;
  padding: 0.15rem 0.55rem;
  border-radius: 4px;
  color: #fff;
  font-size: 1.6rem;
  line-height: 1.2;
  cursor: pointer;
  user-select: none;
}

.site-menu .site-menu-icon:hover { background: rgba(255, 255, 255, 0.25); }

.site-menu .site-menu-trigger:focus-visible ~ .site-menu-icon { outline: 2px solid #fff; }

.site-menu .site-menu-backdrop {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 1;
  cursor: default;
}

.site-menu .site-menu-trigger:checked ~ .site-menu-backdrop { display: block; }

.site-menu .site-menu-panel {
  display: none;
  position: absolute;
  top: 100%;
  right: 0;
  z-index: 2;
  min-width: 15rem;
  margin-top: 0.35rem;
  background: #fff;
  border: 1px solid #d0d7de;
  border-radius: 6px;
  box-shadow: 0 3px 10px rgba(0, 0, 0, 0.25);
  max-height: calc(100vh - 4rem);
  overflow-y: auto;
}

.site-menu .site-menu-trigger:checked ~ .site-menu-panel { display: block; }

.site-menu .site-menu-panel a {
  display: block;
  padding: 0.55rem 1rem;
  color: #1b1f23;
  font-weight: 400;
  text-decoration: none;
  white-space: nowrap;
}

.site-menu .site-menu-panel a:hover { background: #e9edf1; }