:root {
  color-scheme: light;
  --bg: #ffffff;
  --text: #0f172a;
  --muted: #475569;
  --border: #e2e8f0;
  --accent: #0f766e;
  --accent-soft: #ccfbf1;
  --max: 1120px;
}

* {
  box-sizing: border-box;
}

html, body {
  margin: 0;
  padding: 0;
  font-family: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", "Liberation Sans", sans-serif;
  color: var(--text);
  background: var(--bg);
}

img {
  max-width: 100%;
  display: block;
}

a {
  color: inherit;
  text-decoration: none;
}

a:hover {
  color: var(--accent);
}

.container {
  width: min(100% - 2rem, var(--max));
  margin: 0 auto;
}

.skip-link {
  position: absolute;
  left: -999px;
  top: 1rem;
  background: var(--accent);
  color: white;
  padding: 0.5rem 1rem;
  border-radius: 999px;
}

.skip-link:focus {
  left: 1rem;
}

.site-header {
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(8px);
  z-index: 10;
}

.site-header .nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 0;
  gap: 1rem;
}

.logo {
  display: inline-flex;
  align-items: center;
}

.nav-links {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  font-size: 0.95rem;
  color: var(--muted);
}

.hero {
  display: grid;
  gap: 2rem;
  padding: 3.5rem 0 2.5rem;
}

.hero h1 {
  font-size: clamp(2rem, 4vw, 3.2rem);
  line-height: 1.1;
  margin: 0 0 1rem;
}

.hero p {
  margin: 0 0 1rem;
  color: var(--muted);
  font-size: 1.05rem;
}

.badges {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
  font-size: 0.85rem;
  color: var(--muted);
}

.badge {
  border: 1px solid var(--border);
  padding: 0.35rem 0.75rem;
  border-radius: 999px;
  background: #f8fafc;
}

.dropzone {
  border: 1px dashed var(--border);
  border-radius: 1rem;
  padding: 2rem;
  background: #f8fafc;
  text-align: center;
  transition: border-color 150ms ease, background 150ms ease;
}

.dropzone.dragover {
  border-color: var(--accent);
  background: var(--accent-soft);
}

.dropzone button {
  margin-top: 1rem;
  background: var(--accent);
  color: white;
  border: none;
  padding: 0.75rem 1.5rem;
  border-radius: 999px;
  cursor: pointer;
  font-weight: 600;
}

.dropzone small {
  display: block;
  margin-top: 0.75rem;
  color: var(--muted);
}

.section {
  padding: 2.5rem 0;
  border-top: 1px solid var(--border);
}

.section h2 {
  margin-top: 0;
}

.grid {
  display: grid;
  gap: 1.5rem;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.card {
  border: 1px solid var(--border);
  border-radius: 1rem;
  padding: 1.5rem;
  background: white;
}

.card h3 {
  margin-top: 0;
}

.faq-item {
  border-bottom: 1px solid var(--border);
  padding: 1rem 0;
}

.faq-item:last-child {
  border-bottom: none;
}

.site-footer {
  border-top: 1px solid var(--border);
  padding: 2rem 0;
  color: var(--muted);
  font-size: 0.9rem;
}

.page-title {
  padding: 2.5rem 0 1.5rem;
}

.page-title h1 {
  margin: 0 0 0.75rem;
}

.inline-list {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  color: var(--muted);
  font-size: 0.9rem;
}

.notice {
  border: 1px solid var(--border);
  background: #f1f5f9;
  border-radius: 1rem;
  padding: 1rem 1.5rem;
}

.legal-grid {
  display: grid;
  gap: 1.5rem;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}

.legal-block {
  border: 1px solid var(--border);
  border-radius: 1rem;
  padding: 1.5rem;
  background: #ffffff;
}

.meta-list {
  display: grid;
  gap: 0.5rem;
  color: var(--muted);
}

.ad-slot {
  border: 1px solid var(--border);
  border-radius: 0.75rem;
  background: #f8fafc;
  display: grid;
  gap: 0.5rem;
  align-content: start;
  padding: 0.75rem;
  overflow: hidden;
}

.ad-slot--inline {
  min-height: 250px;
}

.ad-slot--sidebar {
  min-height: 600px;
}

.ad-placeholder {
  text-align: center;
  color: var(--muted);
  font-size: 0.9rem;
  padding: 1rem;
}

.ad-placeholder small {
  display: block;
  margin-top: 0.5rem;
}

.ad-label {
  font-size: 0.8rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--muted);
}

.layout-grid {
  display: grid;
  gap: 2rem;
  grid-template-columns: minmax(0, 1fr) 320px;
  align-items: start;
}

.layout-sidebar {
  position: sticky;
  top: 5rem;
}

.tool-panel {
  border: 1px solid var(--border);
  border-radius: 1rem;
  padding: 1.5rem;
  background: white;
}

.tool-panel h2 {
  margin-top: 0;
}

.data-list {
  border: 1px solid var(--border);
  border-radius: 0.75rem;
  padding: 1rem;
  background: #f8fafc;
  color: var(--muted);
  font-size: 0.95rem;
}

.data-list ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 0.5rem;
}

.data-list li {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  border-bottom: 1px solid var(--border);
  padding-bottom: 0.5rem;
}

.data-list li:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.data-key {
  font-weight: 600;
  color: var(--text);
}

.data-value {
  text-align: right;
  color: var(--muted);
}

.status-clean {
  color: #166534;
  font-weight: 700;
}

.tool-actions {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
  margin-top: 1rem;
}

.tool-actions button,
.tool-actions a {
  background: var(--accent);
  color: white;
  border: none;
  padding: 0.65rem 1.25rem;
  border-radius: 999px;
  cursor: pointer;
  font-weight: 600;
}

.tool-actions button.secondary {
  background: #e2e8f0;
  color: var(--text);
}

.tool-actions button:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.visually-hidden-input {
  position: absolute;
  left: -9999px;
  width: 1px;
  height: 1px;
  opacity: 0;
}

.tool-preview {
  display: grid;
  gap: 1rem;
  margin-top: 1rem;
}

.tool-preview img,
.tool-preview canvas {
  width: 100%;
  border-radius: 0.75rem;
  border: 1px solid var(--border);
  background: #fff;
}

.tool-help {
  color: var(--muted);
  font-size: 0.95rem;
}

.tool-mode {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-top: 1rem;
  flex-wrap: wrap;
}

.tool-mode-buttons {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.tool-mode-buttons button {
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 0.35rem 0.85rem;
  background: #f8fafc;
  cursor: pointer;
  font-weight: 600;
}

.tool-mode-buttons button.secondary {
  background: #e2e8f0;
  color: var(--text);
}

.tool-mode-buttons button.active {
  background: var(--accent);
  color: white;
  border-color: var(--accent);
}

.sanitizer-options {
  margin: 1rem 0;
  display: grid;
  gap: 0.75rem;
}

.sanitizer-options-panel {
  border: 1px solid var(--border);
  border-radius: 0.75rem;
  padding: 0.75rem 1rem;
  background: #f8fafc;
  gap: 0.5rem;
}

.sanitizer-options-panel {
  display: grid;
}

.sanitizer-options-panel label {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.95rem;
  color: var(--muted);
}

.sanitizer-grid {
  display: grid;
  gap: 1.5rem;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  align-items: start;
}

.sanitizer-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  margin-bottom: 0.5rem;
}

.sanitizer-actions {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.sanitizer-textarea {
  width: 100%;
  min-height: 220px;
  border: 1px solid var(--border);
  border-radius: 0.75rem;
  padding: 0.75rem;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  font-size: 0.95rem;
  resize: vertical;
}

.sanitizer-stats {
  display: flex;
  gap: 1rem;
  color: var(--muted);
  font-size: 0.9rem;
  margin-top: 0.5rem;
}

@media (max-width: 900px) {
  .sanitizer-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 960px) {
  .layout-grid {
    grid-template-columns: 1fr;
  }

  .layout-sidebar {
    display: none;
  }
}