.site-header-host {
  position: sticky;
  z-index: 50;
  top: 0;
  min-height: var(--header-height);
}

.site-header {
  position: relative;
  border-bottom: 1px solid var(--color-line);
  background: color-mix(in srgb, var(--color-bg) 97%, transparent);
}

@supports (backdrop-filter: blur(1rem)) {
  .site-header {
    backdrop-filter: blur(0.85rem) saturate(105%);
  }
}

.site-header__inner {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: var(--space-5);
  align-items: center;
  min-height: var(--header-height);
}

.wordmark {
  display: inline-flex;
  align-items: center;
  min-height: 2.75rem;
  font-weight: 690;
  letter-spacing: -0.025em;
  text-decoration: none;
}

.site-nav {
  display: flex;
  justify-content: center;
  gap: clamp(1rem, 2vw, 1.6rem);
}

.site-nav a,
.account-link,
.theme-toggle {
  display: inline-flex;
  align-items: center;
  min-height: 2.75rem;
  border: 0;
  background: transparent;
  color: var(--color-text-muted);
  font-size: var(--text-sm);
  font-weight: 600;
  text-decoration: none;
  transition: color var(--duration-fast) ease;
}

.site-nav a:hover,
.site-nav a[aria-current="page"],
.account-link:hover,
.theme-toggle:hover {
  color: var(--color-text);
}

.site-nav a[aria-current="page"] {
  text-decoration: none;
  box-shadow: inset 0 -2px 0 var(--color-accent);
}

.site-header__actions {
  display: flex;
  gap: var(--space-4);
  align-items: center;
}

.theme-toggle {
  min-width: 3.5rem;
  min-height: 2.75rem;
  padding: 0 var(--space-2);
}

.theme-toggle--mobile {
  display: none;
}

.account-link {
  display: inline-flex;
  align-items: center;
  max-width: 14rem;
  min-height: 2.75rem;
  padding-inline: var(--space-3);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-sm);
  color: var(--color-text);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.nav-toggle {
  display: none;
  width: 2.75rem;
  height: 2.75rem;
  padding: 0.75rem;
  border: 0;
  background: transparent;
}

.nav-toggle__line {
  display: block;
  height: 1px;
  margin-block: 0.35rem;
  background: currentColor;
  transition: transform var(--duration-normal) var(--ease-out);
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: var(--button-height);
  padding: 0 var(--space-5);
  border: 1px solid transparent;
  border-radius: var(--button-radius);
  font-size: var(--text-sm);
  font-weight: 650;
  text-decoration: none;
  transition: transform var(--duration-fast) var(--ease-out), background-color var(--duration-fast) ease, border-color var(--duration-fast) ease;
}

.button:active {
  transform: scale(0.975);
}

.button--primary {
  background: var(--color-accent);
  color: var(--color-on-accent);
}

.button--primary:hover {
  background: var(--color-accent-strong);
  text-decoration: none;
}

.button--quiet {
  border-color: color-mix(in srgb, currentColor 35%, transparent);
  background: transparent;
  color: currentColor;
}

.button--quiet:hover {
  border-color: currentColor;
  text-decoration: none;
}

.text-link {
  display: inline-flex;
  align-items: center;
  min-height: 2.75rem;
  font-size: var(--text-sm);
  font-weight: 620;
  text-underline-offset: 0.35em;
}

.form-field {
  display: grid;
  gap: var(--space-2);
}

.form-field label,
.field-label {
  font-size: var(--text-sm);
  font-weight: 650;
}

.form-field input,
.form-field select,
.form-field textarea {
  width: 100%;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-sm);
  background: var(--color-bg);
  color: var(--color-text);
  transition: border-color var(--duration-fast) ease, box-shadow var(--duration-fast) ease;
}

.form-field input,
.form-field select {
  min-height: 3rem;
  padding: 0 var(--space-3);
}

.form-field textarea {
  min-height: 11rem;
  padding: var(--space-3);
  line-height: 1.55;
  resize: vertical;
}

.form-field input:hover,
.form-field select:hover,
.form-field textarea:hover {
  border-color: var(--color-text-muted);
}

.field-help {
  margin: 0;
  color: var(--color-text-muted);
  font-size: var(--text-xs);
}

.button-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.button--secondary {
  border-color: var(--color-line);
  background: transparent;
  color: var(--color-text);
}

.button--secondary:hover {
  border-color: var(--color-text-muted);
  background: var(--color-surface);
  text-decoration: none;
}

.button--danger {
  border-color: color-mix(in srgb, var(--color-error) 45%, var(--color-line));
  background: transparent;
  color: var(--color-error);
}

.form-status {
  min-height: 1.5em;
  margin: 0;
  color: var(--color-text-muted);
  font-size: var(--text-sm);
}

.form-status[data-state="error"] {
  color: var(--color-error);
}

.form-status[data-state="success"] {
  color: var(--color-success);
}

.site-footer-host {
  min-height: 0;
}

.site-footer {
  padding-top: clamp(3rem, 6vw, 4.75rem);
  border-top: 1px solid var(--color-line);
}

.site-footer__main {
  display: grid;
  grid-template-columns: minmax(16rem, 1fr) 1.5fr;
  gap: var(--space-8);
  padding-bottom: var(--space-7);
}

.site-footer__brand p {
  max-width: 24rem;
  margin-top: var(--space-4);
  color: var(--color-text-muted);
}

.footer-nav {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-6);
}

.footer-nav div {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: var(--space-2);
}

.footer-nav h2 {
  margin-bottom: var(--space-3);
  color: var(--color-text-muted);
  font-size: var(--text-xs);
  font-weight: 650;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.footer-nav a {
  font-size: var(--text-sm);
  text-decoration: none;
}

.footer-nav a:hover {
  text-decoration: underline;
  text-decoration-color: var(--color-accent);
}

.site-footer__bottom {
  display: flex;
  justify-content: space-between;
  gap: var(--space-4);
  padding-block: var(--space-5);
  border-top: 1px solid var(--color-line);
  color: var(--color-text-muted);
  font-size: var(--text-xs);
}

.site-footer__bottom p {
  margin: 0;
}

.toast-region {
  position: fixed;
  z-index: 200;
  right: var(--gutter);
  bottom: var(--space-5);
  display: grid;
  width: min(24rem, calc(100vw - 2 * var(--gutter)));
  gap: var(--space-2);
}

.toast {
  padding: var(--space-4);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  box-shadow: var(--shadow-float);
  color: var(--color-text);
  font-size: var(--text-sm);
}

.yz-dialog {
  width: min(32rem, calc(100vw - 2 * var(--gutter)));
  padding: 0;
  border: 1px solid var(--color-line);
  border-radius: var(--dialog-radius);
  background: var(--color-bg);
  color: var(--color-text);
  box-shadow: var(--shadow-float);
}

.yz-dialog::backdrop {
  background: rgb(10 12 10 / 0.55);
}

.yz-dialog__inner {
  padding: var(--space-6);
}

.yz-dialog__header {
  display: flex;
  justify-content: space-between;
  gap: var(--space-4);
  align-items: start;
  margin-bottom: var(--space-5);
}

.yz-dialog__header h2 {
  margin-bottom: 0;
  font-size: var(--text-xl);
}

.yz-dialog__close {
  width: 2.75rem;
  height: 2.75rem;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-sm);
  background: transparent;
}

.error-page {
  display: grid;
  grid-template-columns: minmax(12rem, 0.8fr) minmax(20rem, 1.2fr);
  gap: var(--space-8);
  align-items: center;
  min-height: calc(100vh - var(--header-height));
  padding-block: var(--space-8);
}

.error-page__mark {
  color: var(--color-accent);
  font-size: clamp(7rem, 21vw, 18rem);
  font-weight: 720;
  letter-spacing: -0.04em;
  line-height: 0.75;
}

.error-page__copy h1 {
  margin-bottom: var(--space-5);
  font-size: var(--text-2xl);
}

.error-page__copy p {
  margin-bottom: var(--space-6);
  color: var(--color-text-muted);
  font-size: var(--text-lg);
}

@media (max-width: 56rem) {
  .site-header__inner {
    grid-template-columns: minmax(0, 1fr) auto auto;
    grid-template-areas: "brand actions toggle";
    gap: var(--space-2);
  }

  .wordmark {
    grid-area: brand;
    overflow: hidden;
    text-overflow: ellipsis;
  }

  .site-header__actions {
    grid-area: actions;
    gap: 0;
  }

  .nav-toggle {
    grid-area: toggle;
    display: block;
    justify-self: end;
  }

  .site-nav {
    position: absolute;
    top: calc(100% + 1px);
    right: var(--gutter);
    left: auto;
    display: grid;
    width: min(calc(100% - (2 * var(--gutter))), 21rem);
    padding: var(--space-2);
    border: 1px solid var(--color-line);
    border-top: 0;
    border-radius: 0 0 var(--radius-md) var(--radius-md);
    background: var(--color-bg);
    transform: translateY(-0.5rem);
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--duration-normal) ease, transform var(--duration-normal) var(--ease-out), visibility 0s linear var(--duration-normal);
  }

  .site-nav a {
    display: flex;
    align-items: center;
    min-height: 2.75rem;
    padding-inline: var(--space-3);
    border-bottom: 1px solid var(--color-line);
    color: var(--color-text);
    font-size: var(--text-base);
  }

  .site-nav a[aria-current="page"] {
    color: var(--color-accent);
    box-shadow: none;
  }

  .nav-open .site-nav {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
    transition-delay: 0s;
  }

  .nav-open .nav-toggle__line:first-child {
    transform: translateY(0.35rem) rotate(45deg);
  }

  .nav-open .nav-toggle__line:nth-child(2) {
    transform: translateY(-0.35rem) rotate(-45deg);
  }

  .site-header__actions > .theme-toggle {
    display: none;
  }

  .theme-toggle--mobile {
    display: flex;
    align-items: center;
    justify-content: flex-start;
    width: 100%;
    min-height: 2.75rem;
    padding: 0 var(--space-3);
    border-bottom: 0;
    color: var(--color-text);
    font-size: var(--text-base);
  }

  .site-footer__main {
    grid-template-columns: 1fr;
    gap: var(--space-7);
  }

  .error-page {
    grid-template-columns: 1fr;
    align-content: center;
    gap: var(--space-6);
  }
}

@media (max-width: 48rem) {
  .footer-nav a,
  .site-footer__bottom a {
    display: flex;
    align-items: center;
    min-height: 2.75rem;
  }
}

@media (max-width: 36rem) {
  .account-link {
    max-width: 6.75rem;
    padding-inline: var(--space-3);
  }

  .footer-nav {
    grid-template-columns: 1fr 1fr;
  }

  .site-footer__bottom {
    flex-direction: column;
  }
}

@media (prefers-reduced-transparency: reduce) {
  .site-header {
    background: var(--color-bg);
    backdrop-filter: none;
  }
}