*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--text);
}

#app {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--header-h);
  background: var(--header-bg);
  border-bottom: 1px solid var(--border);
  box-shadow: var(--shadow);
}

.site-header-inner {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 1rem;
  height: 100%;
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.site-brand {
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--text);
  text-decoration: none;
  white-space: nowrap;
}

.site-brand span {
  color: var(--accent);
}

.nav-categories {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  overflow-x: auto;
  flex: 1;
  min-width: 0;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
}

.nav-categories a {
  padding: 0.4rem 0.65rem;
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  color: var(--text-muted);
  text-decoration: none;
  white-space: nowrap;
}

.nav-categories a:hover,
.nav-categories a.is-active {
  color: var(--accent);
  background: var(--card-hover);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.site-main {
  flex: 1;
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 1.25rem 1rem 2rem;
}

.site-footer {
  margin-top: auto;
  padding: 1rem;
  border-top: 1px solid var(--border);
  background: var(--bg-elev);
}

.site-footer-inner {
  max-width: var(--maxw);
  margin: 0 auto;
  font-size: 0.8125rem;
  color: var(--text-muted);
  line-height: 1.6;
}

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

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

.site-footer-inner p {
  margin: 0 0 0.5rem;
}

.site-footer-inner p:last-child {
  margin-bottom: 0;
}

.site-footer-note {
  margin-top: 0.75rem !important;
  padding-top: 0.75rem;
  border-top: 1px solid var(--border);
  opacity: 0.92;
}

.site-footer-disclaimer {
  margin-top: 0.5rem !important;
  opacity: 0.92;
}

.site-footer-sep {
  color: var(--text-muted);
}

.page-title {
  margin: 0 0 0.5rem;
  font-size: 1.5rem;
  font-weight: 700;
}

.page-desc {
  margin: 0 0 1.25rem;
  color: var(--text-muted);
  font-size: 0.9375rem;
  line-height: 1.5;
}

.toast-root {
  position: fixed;
  bottom: 1.25rem;
  right: 1.25rem;
  z-index: 200;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  pointer-events: none;
}

.toast {
  pointer-events: auto;
  padding: 0.65rem 1rem;
  border-radius: var(--radius-sm);
  background: var(--bg-elev);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-lg);
  font-size: 0.875rem;
  animation: toast-in 0.2s ease;
}

.toast--error {
  border-color: var(--danger);
  color: var(--danger);
}

@keyframes toast-in {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.alert {
  padding: 0.75rem 1rem;
  border-radius: var(--radius-sm);
  background: rgb(37 99 235 / 0.1);
  border: 1px solid var(--accent);
  color: var(--text);
  font-size: 0.875rem;
  margin-bottom: 1rem;
}

.alert--warn {
  background: rgb(234 179 8 / 0.12);
  border-color: #ca8a04;
}

.offline-banner {
  display: none;
  margin-bottom: 1rem;
}

.offline-banner.is-visible {
  display: block;
}