.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(244, 245, 242, 0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border);
}

:root[data-theme="dark"] .site-header {
  background: rgba(17, 23, 20, 0.94);
}

.theme-toggle {
  width: 44px;
  height: 44px;
  border: 1px solid var(--color-border);
  border-radius: 50%;
  background: var(--color-surface);
  color: var(--color-ink);
  padding: 0;
  font: inherit;
  cursor: pointer;
  display: inline-grid;
  place-items: center;
}

.theme-toggle:hover { background: var(--color-accent-soft); }
.theme-icon { width: 20px; height: 20px; }
.theme-icon-moon { display: none; }
:root[data-theme="dark"] .theme-icon-sun { display: none; }
:root[data-theme="dark"] .theme-icon-moon { display: block; }
.header-actions { display: flex; align-items: center; gap: var(--space-2); }

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  min-height: 4rem;
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  color: var(--color-ink);
  text-decoration: none;
  font-weight: 700;
  letter-spacing: -0.03em;
}

.logo img {
  width: 28px;
  height: 28px;
}

.site-nav ul {
  display: flex;
  gap: var(--space-4);
  list-style: none;
  margin: 0;
  padding: 0;
}

.site-nav { margin-left: auto; }

.site-nav a {
  color: var(--color-ink);
  text-decoration: none;
  font-weight: 500;
  min-height: 44px;
  display: inline-flex;
  align-items: center;
}

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

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-surface);
  padding: 0;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 6px;
  cursor: pointer;
}

.nav-toggle-bar {
  display: block;
  width: 16px;
  height: 2px;
  background: var(--color-ink);
}

.site-footer {
  border-top: 1px solid var(--color-border);
  padding: var(--space-6) 0;
  margin-top: auto;
}

.footer-inner {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.footer-brand {
  font-weight: 700;
}

.footer-links {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
}

.footer-links a {
  color: var(--color-muted);
  text-decoration: none;
  min-height: 44px;
  display: inline-flex;
  align-items: center;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 1.1rem;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  font: inherit;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
}

.btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.btn-primary {
  background: var(--color-accent);
  color: #fff;
}

.btn-primary:hover {
  background: var(--color-accent-hover);
  color: #fff;
}

.btn-secondary {
  background: var(--color-surface);
  color: var(--color-ink);
  border-color: var(--color-border);
}

.btn-secondary:hover {
  color: var(--color-ink);
  background: var(--color-accent-soft);
}

.btn-ghost {
  background: transparent;
  color: var(--color-muted);
}

.field-label {
  display: block;
  font-weight: 600;
  margin-bottom: var(--space-2);
}

.field-input,
.field-textarea,
.field-select {
  width: 100%;
  max-width: 32rem;
  min-height: 44px;
  padding: 0.65rem 0.85rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-surface);
  color: var(--color-ink);
  font: inherit;
}

.field-textarea {
  min-height: 8rem;
  resize: vertical;
}

.field-hint {
  margin-top: var(--space-2);
  color: var(--color-muted);
  font-size: 0.9rem;
}

.upload-area {
  border: 2px dashed var(--color-border);
  border-radius: var(--radius);
  background: var(--color-surface);
  padding: clamp(1.5rem, 5vw, 3rem);
  text-align: center;
  color: var(--color-muted);
}

.upload-area:hover { border-color: var(--color-accent); }
.upload-area .field-label { color: var(--color-ink); font-size: 1.05rem; }
.upload-area p { max-width: 34rem; margin: 0 auto var(--space-4); }
.upload-icon { width: 36px; height: 36px; margin: 0 auto var(--space-3); color: var(--color-accent); }
.file-input { max-width: 28rem; margin-inline: auto; }
.file-input::file-selector-button { border: 0; border-radius: 6px; background: var(--color-accent); color: #fff; padding: 0.55rem 0.8rem; margin-right: var(--space-3); font: inherit; font-weight: 650; cursor: pointer; }

.upload-area.is-dragover {
  border-color: var(--color-accent);
  background: var(--color-accent-soft);
}

.alert {
  padding: var(--space-4);
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
}

.alert-error {
  border-color: #f0c4c4;
  background: var(--color-danger-bg);
  color: var(--color-danger);
}

.loading {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  color: var(--color-muted);
}

.loading[hidden],
[hidden] {
  display: none !important;
}

.result-panel {
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  background: var(--color-surface);
  padding: var(--space-5);
  box-shadow: var(--shadow);
}

.success-panel { border-top: 4px solid var(--color-accent); margin-top: var(--space-5); }
.result-kicker { color: var(--color-accent); font-size: 0.78rem; font-weight: 750; letter-spacing: 0.08em; text-transform: uppercase; margin-bottom: var(--space-2); }

.empty-state,
.error-state {
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: var(--space-6);
  text-align: center;
  color: var(--color-muted);
  background: var(--color-surface);
}

.badge {
  display: inline-flex;
  align-items: center;
  font-size: 0.75rem;
  font-weight: 650;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  color: var(--color-accent);
  background: var(--color-accent-soft);
  border-radius: 999px;
  padding: 0.2rem 0.55rem;
}

.category-list {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.category-chip {
  min-height: 40px;
  display: inline-flex;
  align-items: center;
  padding: 0 0.9rem;
  border-radius: 999px;
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-ink);
  text-decoration: none;
  font-weight: 500;
}

.category-chip:hover {
  background: var(--color-accent-soft);
  color: var(--color-ink);
}

@media (max-width: 767px) {
  .nav-toggle {
    display: inline-flex;
  }

  .site-nav {
    display: none;
    position: absolute;
    left: 0;
    right: 0;
    top: 4rem;
    background: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
    padding: var(--space-3) 1rem var(--space-4);
  }

  .site-nav.is-open {
    display: block;
  }

  .site-nav ul {
    flex-direction: column;
    gap: 0;
  }

  .site-nav a {
    width: 100%;
  }
}

@media (min-width: 768px) {
  .footer-inner {
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
  }
}