.site-header {
  position: fixed;
  z-index: 1000;
  inset: 0 0 auto;
  min-height: var(--header-height);
  border-bottom: 1px solid var(--c-border);
  background: color-mix(in srgb, var(--c-bg-elevated) 86%, transparent);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: var(--header-height);
  gap: 1rem;
}

.brand {
  display: inline-flex;
  min-width: 0;
  align-items: center;
  gap: 0.72rem;
  font-weight: 850;
  letter-spacing: -0.025em;
}

.brand-logo {
  width: 2.6rem;
  height: 2.6rem;
  flex: 0 0 auto;
  border-radius: 0.85rem;
  box-shadow: var(--shadow-sm);
}

.brand-name {
  font-size: 1.15rem;
}

.brand-tagline {
  display: none;
  color: var(--c-text-subtle);
  font-size: 0.72rem;
  font-weight: 650;
  letter-spacing: 0;
}

.desktop-nav {
  display: none;
  align-items: center;
  gap: 0.4rem;
}

.nav-link,
.nav-trigger {
  display: inline-flex;
  align-items: center;
  min-height: 2.7rem;
  border: 0;
  border-radius: 0.8rem;
  background: transparent;
  color: var(--c-text-muted);
  padding: 0.6rem 0.82rem;
  font-size: 0.9rem;
  font-weight: 750;
  cursor: pointer;
  transition: color 180ms ease, background 180ms ease;
}

.nav-link:hover,
.nav-trigger:hover,
.nav-link[aria-current="page"] {
  background: var(--c-bg-soft);
  color: var(--c-text);
}

.nav-group {
  position: relative;
}

.nav-trigger::after {
  margin-left: 0.45rem;
  content: "⌄";
  font-size: 0.8rem;
}

.nav-menu {
  position: absolute;
  top: calc(100% + 0.65rem);
  left: 50%;
  display: grid;
  width: min(24rem, 82vw);
  transform: translate(-50%, 0.5rem);
  visibility: hidden;
  gap: 0.35rem;
  border: 1px solid var(--c-border);
  border-radius: 1.25rem;
  background: var(--c-bg-elevated);
  box-shadow: var(--shadow-md);
  opacity: 0;
  padding: 0.65rem;
  transition: opacity 150ms ease, transform 150ms ease, visibility 150ms ease;
}

.nav-group:hover .nav-menu,
.nav-group:focus-within .nav-menu,
.nav-group[data-open="true"] .nav-menu {
  transform: translate(-50%, 0);
  visibility: visible;
  opacity: 1;
}

.nav-menu a {
  display: grid;
  grid-template-columns: 2.25rem 1fr;
  gap: 0.7rem;
  border-radius: 0.9rem;
  padding: 0.75rem;
}

.nav-menu a:hover {
  background: var(--c-bg-soft);
}

.nav-menu-mark {
  display: grid;
  width: 2.25rem;
  height: 2.25rem;
  place-items: center;
  border-radius: 0.75rem;
  background: var(--gradient-brand-soft);
  color: var(--c-primary-deep);
  font-weight: 900;
}

.nav-menu strong,
.nav-menu small {
  display: block;
}

.nav-menu small {
  color: var(--c-text-muted);
  font-size: 0.76rem;
  line-height: 1.4;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 0.45rem;
}

.icon-button {
  display: inline-grid;
  width: 2.75rem;
  height: 2.75rem;
  place-items: center;
  border: 1px solid var(--c-border);
  border-radius: 0.9rem;
  background: var(--c-bg-elevated);
  color: var(--c-text);
  box-shadow: var(--shadow-xs);
  cursor: pointer;
  transition: transform 180ms ease, border-color 180ms ease, box-shadow 180ms ease;
}

.icon-button:hover {
  transform: translateY(-1px);
  border-color: var(--c-border-strong);
  box-shadow: var(--shadow-sm);
}

.theme-icon::before {
  content: "☾";
  font-size: 1.15rem;
}

html[data-theme="dark"] .theme-icon::before {
  content: "☀";
}

.menu-icon,
.menu-icon::before,
.menu-icon::after {
  width: 1.15rem;
  height: 2px;
  border-radius: 999px;
  background: currentColor;
}

.menu-icon {
  position: relative;
}

.menu-icon::before,
.menu-icon::after {
  position: absolute;
  left: 0;
  content: "";
}

.menu-icon::before { top: -0.38rem; }
.menu-icon::after { top: 0.38rem; }

.mobile-menu {
  position: fixed;
  z-index: 990;
  inset: var(--header-height) 0 auto;
  max-height: calc(100dvh - var(--header-height));
  transform: translateY(-0.5rem);
  visibility: hidden;
  overflow: auto;
  border-bottom: 1px solid var(--c-border);
  background: color-mix(in srgb, var(--c-bg-elevated) 96%, transparent);
  box-shadow: var(--shadow-md);
  opacity: 0;
  padding: 0.8rem var(--gutter) 1.25rem;
  transition: opacity 160ms ease, transform 160ms ease, visibility 160ms ease;
}

.mobile-menu[data-open="true"] {
  transform: translateY(0);
  visibility: visible;
  opacity: 1;
}

.mobile-menu a,
.mobile-menu summary {
  display: flex;
  width: 100%;
  align-items: center;
  justify-content: space-between;
  border-radius: 0.9rem;
  color: var(--c-text);
  padding: 0.85rem 0.9rem;
  font-weight: 800;
  cursor: pointer;
}

.mobile-menu a:hover,
.mobile-menu summary:hover {
  background: var(--c-bg-soft);
}

.mobile-menu details a {
  margin-left: 0.7rem;
  color: var(--c-text-muted);
  font-weight: 650;
}

.mobile-menu summary {
  list-style: none;
}

.mobile-menu summary::-webkit-details-marker {
  display: none;
}

.button {
  display: inline-flex;
  min-height: 3rem;
  align-items: center;
  justify-content: center;
  gap: 0.55rem;
  border: 1px solid transparent;
  border-radius: 0.95rem;
  padding: 0.78rem 1.12rem;
  font-size: 0.95rem;
  font-weight: 850;
  line-height: 1.2;
  cursor: pointer;
  transition: transform 180ms ease, box-shadow 180ms ease, border-color 180ms ease, background 180ms ease;
}

.button:hover {
  transform: translateY(-2px);
}

.button--primary {
  background: var(--gradient-brand);
  color: #fff;
  box-shadow: 0 12px 30px rgba(36, 120, 212, 0.22);
}

.button--secondary {
  border-color: var(--c-border-strong);
  background: var(--c-bg-elevated);
  color: var(--c-text);
  box-shadow: var(--shadow-xs);
}

.button--ghost {
  border-color: var(--c-border);
  background: transparent;
  color: var(--c-text);
}

.button--small {
  min-height: 2.55rem;
  padding: 0.62rem 0.9rem;
  font-size: 0.86rem;
}

.button[disabled] {
  transform: none;
  opacity: 0.62;
  cursor: wait;
}

.card {
  border: 1px solid var(--c-border);
  border-radius: var(--radius-lg);
  background: color-mix(in srgb, var(--c-bg-elevated) 94%, transparent);
  box-shadow: var(--shadow-sm);
}

.card--glass {
  background: color-mix(in srgb, var(--c-bg-elevated) 78%, transparent);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  border: 1px solid color-mix(in srgb, var(--c-primary) 22%, var(--c-border));
  border-radius: var(--radius-pill);
  background: color-mix(in srgb, var(--c-primary) 8%, var(--c-bg-elevated));
  color: var(--c-primary-deep);
  padding: 0.46rem 0.76rem;
  font-size: 0.8rem;
  font-weight: 800;
}

.check-list {
  display: grid;
  gap: 0.8rem;
  padding: 0;
  list-style: none;
}

.check-list li {
  display: grid;
  grid-template-columns: 1.35rem 1fr;
  gap: 0.65rem;
  align-items: start;
}

.check-list li::before {
  display: grid;
  width: 1.35rem;
  height: 1.35rem;
  place-items: center;
  border-radius: 50%;
  background: color-mix(in srgb, var(--c-secondary) 16%, transparent);
  color: var(--c-secondary-deep);
  content: "✓";
  font-size: 0.8rem;
  font-weight: 950;
}

.form-grid {
  display: grid;
  gap: 1rem;
}

.form-row {
  display: grid;
  gap: 1rem;
}

.form-field {
  display: grid;
  gap: 0.42rem;
}

.form-field > span,
.form-label {
  color: var(--c-text);
  font-size: 0.86rem;
  font-weight: 800;
}

.form-field input,
.form-field select,
.form-field textarea {
  width: 100%;
  min-height: 3.05rem;
  border: 1px solid var(--c-border-strong);
  border-radius: 0.9rem;
  background: var(--c-bg-elevated);
  color: var(--c-text);
  padding: 0.72rem 0.85rem;
  outline: none;
  transition: border-color 150ms ease, box-shadow 150ms ease;
}

.form-field textarea {
  min-height: 7rem;
  resize: vertical;
}

.form-field input:focus,
.form-field select:focus,
.form-field textarea:focus {
  border-color: var(--c-primary);
  box-shadow: 0 0 0 4px color-mix(in srgb, var(--c-primary) 15%, transparent);
}

.form-help,
.form-status {
  color: var(--c-text-muted);
  font-size: 0.8rem;
}

.form-status[data-state="success"] { color: var(--c-success); }
.form-status[data-state="error"] { color: var(--c-danger); }
.form-status[data-state="pending"] { color: var(--c-primary-deep); }

.form-tabs {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.35rem;
  border: 1px solid var(--c-border);
  border-radius: 1rem;
  background: var(--c-bg-soft);
  padding: 0.35rem;
}

.form-tab {
  min-height: 2.65rem;
  border: 0;
  border-radius: 0.75rem;
  background: transparent;
  color: var(--c-text-muted);
  font-weight: 850;
  cursor: pointer;
}

.form-tab[aria-selected="true"] {
  background: var(--c-bg-elevated);
  color: var(--c-text);
  box-shadow: var(--shadow-xs);
}

.form-pane[hidden] {
  display: none;
}

.modal {
  position: fixed;
  z-index: 1200;
  inset: 0;
  display: grid;
  visibility: hidden;
  place-items: end center;
  background: rgba(3, 9, 20, 0.72);
  opacity: 0;
  padding: 0;
  transition: opacity 170ms ease, visibility 170ms ease;
}

.modal[data-open="true"] {
  visibility: visible;
  opacity: 1;
}

.modal-panel {
  width: 100%;
  max-height: calc(100dvh - 1.5rem);
  overflow: auto;
  border: 1px solid var(--c-border);
  border-radius: 1.5rem 1.5rem 0 0;
  background: var(--c-bg-elevated);
  box-shadow: var(--shadow-lg);
  padding: 1.2rem;
}

.modal-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1.25rem;
}

.cookie-banner {
  position: fixed;
  z-index: 1300;
  right: 1rem;
  bottom: 1rem;
  left: 1rem;
  display: none;
  max-width: 56rem;
  margin-inline: auto;
  border: 1px solid var(--c-border);
  border-radius: 1.2rem;
  background: color-mix(in srgb, var(--c-bg-elevated) 96%, transparent);
  box-shadow: var(--shadow-lg);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  padding: 1rem;
}

.cookie-banner[data-visible="true"] {
  display: grid;
  gap: 0.9rem;
}

.cookie-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}

.site-footer {
  border-top: 1px solid var(--c-border);
  background: color-mix(in srgb, var(--c-bg-elevated) 70%, transparent);
  padding-block: 2rem 5.5rem;
}

.footer-grid {
  display: grid;
  gap: 1.5rem;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.2rem;
  color: var(--c-text-muted);
  font-size: 0.86rem;
}

.footer-links a:hover {
  color: var(--c-text);
}

.mobile-action-bar {
  position: fixed;
  z-index: 900;
  right: 0.75rem;
  bottom: 0.75rem;
  left: 0.75rem;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.5rem;
  border: 1px solid var(--c-border);
  border-radius: 1rem;
  background: color-mix(in srgb, var(--c-bg-elevated) 94%, transparent);
  box-shadow: var(--shadow-md);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  padding: 0.45rem;
}

@media (min-width: 40rem) {
  .brand-tagline { display: block; }
  .form-row { grid-template-columns: 1fr 1fr; }
  .modal { place-items: center; padding: 1.25rem; }
  .modal-panel { max-width: 42rem; border-radius: 1.5rem; padding: 1.6rem; }
  .cookie-banner[data-visible="true"] { grid-template-columns: 1fr auto; align-items: center; }
  .site-footer { padding-bottom: 2rem; }
}

@media (min-width: 64rem) {
  .desktop-nav { display: flex; }
  .menu-button { display: none; }
  .mobile-menu { display: none; }
  .mobile-action-bar { display: none; }
  .footer-grid { grid-template-columns: 1fr auto; align-items: center; }
}
.brand-logo--dark { display: none; }
html[data-theme="dark"] .brand-logo--light { display: none; }
html[data-theme="dark"] .brand-logo--dark { display: block; }