/* =========================================================
   ClientSideTools — Site Components
   Header, footer, navigation, breadcrumbs, cards, search,
   toast, theme switcher, and global site chrome.
   ========================================================= */

/* ---------------------------------------------------------
   Skip Link
   --------------------------------------------------------- */

.skip-link {
  position: absolute;
  top: -100px;
  left: var(--space-4);
  z-index: var(--z-toast);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-md);
  background-color: var(--brand-primary);
  color: #ffffff;
  font-weight: var(--fw-semibold);
  text-decoration: none;
  transition: top var(--transition-fast);
}

.skip-link:focus {
  top: var(--space-4);
}

/* ---------------------------------------------------------
   Site Header
   --------------------------------------------------------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: var(--z-sticky);
  background-color: var(--bg-primary);
  border-bottom: 1px solid var(--border-default);
}

.site-header__inner {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  min-height: 72px;
  position: relative;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  color: var(--text-primary);
  font-size: var(--fs-lg);
  font-weight: var(--fw-bold);
  letter-spacing: -0.02em;
  text-decoration: none;
  white-space: nowrap;
}

.brand:hover,
.brand:focus-visible {
  color: var(--text-primary);
  text-decoration: none;
}

.brand__logo {
  width: 30px;
  height: 30px;
  color: var(--brand-primary);
  flex-shrink: 0;
}

.brand__tagline {
  display: none;
  color: var(--text-muted);
  font-size: var(--fs-sm);
  font-weight: var(--fw-normal);
  margin-left: var(--space-2);
}

@media (min-width: 1100px) {
  .brand__tagline {
    display: inline;
  }
}

/* ---------------------------------------------------------
   Main Navigation
   --------------------------------------------------------- */

.site-nav {
  display: none;
}

.site-nav.is-open {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  padding: var(--space-4);
  background-color: var(--bg-primary);
  border-bottom: 1px solid var(--border-default);
  box-shadow: var(--shadow-lg);
}

.site-nav a,
.nav-dropdown summary {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  width: 100%;
  padding: var(--space-2) var(--space-3);
  border: 0;
  border-radius: var(--radius-md);
  background: transparent;
  color: var(--text-secondary);
  font: inherit;
  font-weight: var(--fw-medium);
  text-align: left;
  text-decoration: none;
  cursor: pointer;
}

.site-nav a:hover,
.site-nav a:focus-visible,
.site-nav a.is-active,
.nav-dropdown summary:hover,
.nav-dropdown summary:focus-visible {
  background-color: var(--bg-secondary);
  color: var(--text-primary);
  text-decoration: none;
}

.site-nav a[aria-current="page"] {
  color: var(--brand-primary);
}

.nav-dropdown {
  position: relative;
}

.nav-dropdown summary {
  list-style: none;
}

.nav-dropdown summary::-webkit-details-marker {
  display: none;
}

.nav-dropdown__icon {
  width: 14px;
  height: 14px;
  transition: transform var(--transition-fast);
}

.nav-dropdown[open] .nav-dropdown__icon {
  transform: rotate(180deg);
}

.nav-dropdown__menu {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  padding: var(--space-2);
}

.nav-dropdown__menu a {
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  text-decoration: none;
}

.nav-dropdown__menu a:hover,
.nav-dropdown__menu a:focus-visible {
  background-color: var(--bg-secondary);
  color: var(--text-primary);
}

/* Desktop Navigation */

@media (min-width: 960px) {
  .site-nav {
    display: flex;
    align-items: center;
    gap: var(--space-1);
    margin-left: var(--space-4);
  }

  .site-nav.is-open {
    position: static;
    flex-direction: row;
    padding: 0;
    background: transparent;
    border: 0;
    box-shadow: none;
  }

  .site-nav a,
  .nav-dropdown summary {
    width: auto;
    padding: var(--space-2) var(--space-3);
    white-space: nowrap;
  }

  .nav-dropdown__menu {
    position: absolute;
    top: calc(100% + var(--space-2));
    left: 0;
    min-width: 260px;
    padding: var(--space-2);
    background-color: var(--bg-primary);
    border: 1px solid var(--border-default);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
  }

  .nav-toggle {
    display: none;
  }
}

/* ---------------------------------------------------------
   Header Actions
   --------------------------------------------------------- */

.site-actions {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin-left: auto;
}

.nav-toggle {
  min-width: 44px;
  min-height: 44px;
}

.nav-toggle__icon {
  width: 20px;
  height: 20px;
  display: block;
}

/* ---------------------------------------------------------
   Theme Switcher
   --------------------------------------------------------- */

.theme-switcher {
  display: inline-flex;
  align-items: center;
  gap: 2px;
  padding: 3px;
  border: 1px solid var(--border-default);
  border-radius: var(--radius-full);
  background-color: var(--bg-secondary);
}

.theme-switcher__option {
  appearance: none;
  border: 0;
  border-radius: var(--radius-full);
  padding: 6px 10px;
  background: transparent;
  color: var(--text-secondary);
  font: inherit;
  font-size: var(--fs-xs);
  font-weight: var(--fw-semibold);
  line-height: 1;
  cursor: pointer;
  transition: background-color var(--transition-fast), color var(--transition-fast);
}

.theme-switcher__option:hover {
  color: var(--text-primary);
}

.theme-switcher__option[aria-pressed="true"] {
  background-color: var(--bg-primary);
  color: var(--text-primary);
  box-shadow: var(--shadow-sm);
}

@media (max-width: 560px) {
  .theme-switcher__option {
    padding: 6px 8px;
  }
}

/* ---------------------------------------------------------
   Breadcrumbs
   --------------------------------------------------------- */

.breadcrumb {
  margin-bottom: var(--space-6);
  font-size: var(--fs-sm);
}

.breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-2);
  list-style: none;
  margin: 0;
  padding: 0;
}

.breadcrumb li {
  display: inline-flex;
  align-items: center;
  color: var(--text-secondary);
}

.breadcrumb li + li::before {
  content: "/";
  margin-right: var(--space-2);
  color: var(--text-muted);
}

.breadcrumb a {
  color: var(--text-secondary);
  text-decoration: none;
}

.breadcrumb a:hover,
.breadcrumb a:focus-visible {
  color: var(--brand-primary);
  text-decoration: underline;
}

.breadcrumb [aria-current="page"] {
  color: var(--text-primary);
  font-weight: var(--fw-medium);
}

/* ---------------------------------------------------------
   Tool Cards & Category Cards
   --------------------------------------------------------- */

.tool-card,
.category-card {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  height: 100%;
}

.tool-card__title,
.category-card__title {
  margin: 0;
  font-size: var(--fs-lg);
  line-height: var(--lh-tight);
}

.tool-card__link,
.category-card__link {
  color: var(--text-primary);
  text-decoration: none;
}

.tool-card__link:hover,
.tool-card__link:focus-visible,
.category-card__link:hover,
.category-card__link:focus-visible {
  color: var(--brand-primary);
  text-decoration: underline;
}

.tool-card__description,
.category-card__description {
  margin: 0;
  color: var(--text-secondary);
}

.tool-card__meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-top: auto;
  padding-top: var(--space-3);
}

.category-card__count {
  color: var(--text-muted);
  font-size: var(--fs-sm);
}

/* ---------------------------------------------------------
   Privacy Indicator
   --------------------------------------------------------- */

.privacy-indicator {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-3);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-full);
  background-color: var(--bg-secondary);
  color: var(--text-secondary);
  font-size: var(--fs-sm);
  font-weight: var(--fw-medium);
}

.privacy-indicator__icon {
  width: 16px;
  height: 16px;
  color: var(--color-success);
  flex-shrink: 0;
}

/* ---------------------------------------------------------
   Search Dialog
   --------------------------------------------------------- */

.search-dialog {
  width: min(760px, calc(100vw - var(--space-8)));
  padding: 0;
  border: 1px solid var(--border-default);
  border-radius: var(--radius-lg);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  box-shadow: var(--shadow-lg);
}

.search-dialog[open] {
  display: grid;
}

.search-dialog::backdrop {
  background-color: rgba(15, 23, 42, 0.55);
}

.search-dialog__panel {
  padding: var(--space-4);
}

.search-form {
  display: flex;
  gap: var(--space-2);
}

.search-form .input {
  flex: 1;
}

.search-status {
  min-height: 1.5em;
  margin-top: var(--space-3);
  margin-bottom: 0;
  color: var(--text-muted);
}

.search-results {
  list-style: none;
  margin: var(--space-3) 0 0;
  padding: 0;
  display: grid;
  gap: var(--space-2);
  max-height: min(52vh, 520px);
  overflow: auto;
}

.search-result__link {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--space-4);
  padding: var(--space-3);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-md);
  text-decoration: none;
  transition: border-color var(--transition-fast), background-color var(--transition-fast);
}

.search-result__link:hover,
.search-result__link:focus-visible {
  background-color: var(--bg-secondary);
  border-color: var(--border-strong);
  text-decoration: none;
}

.search-result__main {
  display: grid;
  gap: 4px;
  min-width: 0;
}

.search-result__title {
  color: var(--text-primary);
  font-weight: var(--fw-semibold);
}

.search-result__description {
  color: var(--text-secondary);
  font-size: var(--fs-sm);
  overflow-wrap: anywhere;
}

.search-empty {
  padding: var(--space-4);
  border: 1px dashed var(--border-strong);
  border-radius: var(--radius-md);
  color: var(--text-secondary);
}

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

.site-footer {
  border-top: 1px solid var(--border-default);
  background-color: var(--bg-secondary);
  padding-block: var(--space-12) var(--space-6);
}

.site-footer__grid {
  display: grid;
  gap: var(--space-8);
  margin-bottom: var(--space-10);
}

@media (min-width: 720px) {
  .site-footer__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 1080px) {
  .site-footer__grid {
    grid-template-columns: 1.4fr 1fr 1fr 1fr;
  }
}

.site-footer__title {
  margin-bottom: var(--space-3);
  color: var(--text-muted);
  font-size: var(--fs-sm);
  font-weight: var(--fw-semibold);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.site-footer__text {
  max-width: 38ch;
  color: var(--text-secondary);
}

.site-footer nav {
  display: grid;
  gap: var(--space-2);
}

.site-footer nav a {
  color: var(--text-secondary);
  text-decoration: none;
}

.site-footer nav a:hover,
.site-footer nav a:focus-visible {
  color: var(--brand-primary);
  text-decoration: underline;
}

.site-footer__bottom {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  align-items: center;
  justify-content: space-between;
  padding-top: var(--space-4);
  border-top: 1px solid var(--border-default);
  color: var(--text-muted);
  font-size: var(--fs-sm);
}

.site-footer__bottom p {
  margin: 0;
}

/* ---------------------------------------------------------
   Toast
   --------------------------------------------------------- */

cst-toast {
  position: fixed;
  left: 50%;
  bottom: var(--space-5);
  z-index: var(--z-toast);
  transform: translateX(-50%) translateY(calc(100% + var(--space-6)));
  max-width: min(92vw, 560px);
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-md);
  background-color: var(--text-primary);
  color: var(--bg-primary);
  font-size: var(--fs-sm);
  font-weight: var(--fw-medium);
  box-shadow: var(--shadow-lg);
  opacity: 0;
  pointer-events: none;
  transition:
    opacity var(--transition-base),
    transform var(--transition-base);
}

cst-toast.is-visible {
  transform: translateX(-50%) translateY(0);
  opacity: 1;
}

cst-toast[data-type="success"] {
  background-color: var(--color-success);
  color: #ffffff;
}

cst-toast[data-type="warning"] {
  background-color: var(--color-warning);
  color: #111827;
}

cst-toast[data-type="danger"] {
  background-color: var(--color-danger);
  color: #ffffff;
}

@media (prefers-reduced-motion: reduce) {
  cst-toast {
    transition: none;
  }
}