/* Global navigation for modern templates (main.css / main-cont.css).
   Keep this file ASCII-only for safety across mixed-encoding pages. */

.skip-link {
  position: absolute;
  left: 0.5rem;
  top: 0.5rem;
  padding: 0.5rem 0.75rem;
  background: #000;
  color: #fff;
  z-index: 10000;
  transform: translateY(-200%);
}

.skip-link:focus,
.skip-link:focus-visible {
  transform: translateY(0);
}

.site-nav {
  border-top: 1px solid #eee;
  border-bottom: 1px solid #eee;
  background: #fff;
}

.site-nav__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 0.75rem;
}

.site-nav__home {
  display: inline-block;
  font-weight: bold;
  text-decoration: none;
  white-space: nowrap;
}

.site-nav__grades {
  display: flex;
  flex: 1 1 auto;
  gap: 0.35rem;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  padding: 0.25rem 0;
}

.site-nav__grades a {
  display: inline-block;
  padding: 0.25rem 0.55rem;
  border: 1px solid #ddd;
  border-radius: 999px;
  text-decoration: none;
  white-space: nowrap;
  background: #fafafa;
}

.site-nav__search {
  display: flex;
  flex: 1 1 16rem;
  gap: 0.35rem;
  align-items: center;
}

.site-nav__search input[type="search"] {
  flex: 1 1 auto;
  min-width: 8rem;
  padding: 0.35rem 0.5rem;
  border: 1px solid #ccc;
  border-radius: 6px;
}

.site-nav__search button {
  padding: 0.35rem 0.75rem;
  border: 1px solid #ccc;
  border-radius: 6px;
  background: #f3f3f3;
  cursor: pointer;
}

@media (min-width: 720px) {
  .site-nav__inner {
    max-width: 1100px;
    margin: 0 auto;
  }
}

@media (max-width: 719px) {
  .site-nav__search {
    flex-basis: 100%;
  }
}

/* Page tools (QR/URL copy) modal.
   Keep this file ASCII-only for safety across mixed-encoding pages. */

.site-nav__tool {
  padding: 0.35rem 0.75rem;
  border: 1px solid #ccc;
  border-radius: 6px;
  background: #f3f3f3;
  cursor: pointer;
}

.site-nav__tool:focus,
.site-nav__tool:focus-visible {
  outline: 2px solid #000;
  outline-offset: 2px;
}

.page-tools {
  position: fixed;
  inset: 0;
  z-index: 20000;
  display: flex;
  align-items: center;
  justify-content: center;
}

.page-tools[hidden] {
  display: none;
}

.page-tools__overlay {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.55);
}

.page-tools__panel {
  position: relative;
  width: calc(100% - 2rem);
  max-width: 540px;
  max-height: calc(100% - 2rem);
  overflow: auto;
  border-radius: 12px;
  background: #fff;
  padding: 1rem;
  box-shadow: 0 12px 48px rgba(0, 0, 0, 0.25);
}

.page-tools__header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
}

.page-tools__title {
  margin: 0;
  font-size: 1.05rem;
}

.page-tools__close {
  border: 1px solid #ccc;
  background: #fff;
  border-radius: 6px;
  padding: 0.25rem 0.5rem;
  cursor: pointer;
}

.page-tools__code {
  text-align: center;
  margin: 0.75rem 0;
}

.page-tools__code img,
.page-tools__code canvas {
  display: inline-block;
  max-width: 100%;
  height: auto;
}

.page-tools__url {
  margin: 0.5rem 0 0;
  font-size: small;
  word-break: break-all;
}

.page-tools__buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  align-items: center;
  margin-top: 0.5rem;
}

.page-tools__buttons button {
  font-size: small;
  padding: 0.35rem 0.6rem;
  border: 1px solid #ccc;
  border-radius: 6px;
  background: #f3f3f3;
  cursor: pointer;
}

.page-tools__status {
  font-size: small;
}

@media (max-width: 719px) {
  .site-nav__tool {
    flex-basis: 100%;
  }

  .page-tools__panel {
    width: calc(100% - 1.25rem);
    max-height: calc(100% - 1.25rem);
    padding: 0.75rem;
    border-radius: 10px;
  }
}