:root {
  --bg: #0f1419;
  --surface: #1a2332;
  --surface-2: #243044;
  --text: #e8eef4;
  --muted: #8b9cb3;
  --accent: #3b82f6;
  --accent-hover: #2563eb;
  --success: #22c55e;
  --border: #2d3a4f;
  --radius: 12px;
  --font: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --tool-ad-gap: 160px;
}

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

body {
  margin: 0;
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
  min-height: 100vh;
}

.container {
  width: min(1100px, 100% - 2rem);
  margin-inline: auto;
}

.site-header {
  border-bottom: 1px solid var(--border);
  background: var(--surface);
  padding: 1rem 0;
}

.header-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.5rem 1.25rem;
}

.logo {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text);
  text-decoration: none;
}

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

.tagline {
  margin: 0;
  font-size: 0.8125rem;
  color: var(--muted);
}

.trust-bar {
  margin: 0.75rem 0 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1rem;
  font-size: 0.8125rem;
  color: var(--muted);
}

.layout {
  display: grid;
  grid-template-columns: 1fr min(720px, 100%) 1fr;
  gap: 1.25rem;
  padding-block: 1.25rem 2.5rem;
  align-items: start;
}

.tool-column {
  grid-column: 2;
  min-width: 0;
}

.ad-rail {
  position: sticky;
  top: 1rem;
}

.ad-rail .ad-slot {
  min-height: 280px;
}

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

  .ad-rail {
    display: none;
  }

  .tool-column {
    grid-column: 1;
  }
}

.hero h1 {
  margin: 0 0 0.35rem;
  font-size: clamp(1.45rem, 4vw, 1.85rem);
  letter-spacing: -0.02em;
}

.hero .lede {
  margin: 0 0 1rem;
  color: var(--muted);
  font-size: 0.9375rem;
}

.tool-panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem;
  margin-bottom: var(--tool-ad-gap);
}

.hint {
  margin: 0 0 1rem;
  font-size: 0.875rem;
  color: var(--muted);
}

.dropzone {
  position: relative;
  border: 2px dashed var(--border);
  border-radius: var(--radius);
  background: var(--bg);
  padding: 2rem 1rem;
  text-align: center;
  transition: border-color 0.15s, background 0.15s;
}

.dropzone.dragover {
  border-color: var(--accent);
  background: var(--surface-2);
}

.dropzone input[type="file"] {
  position: absolute;
  inset: 0;
  opacity: 0;
  cursor: pointer;
}

.dropzone label {
  cursor: pointer;
  color: var(--muted);
}

.dropzone strong {
  color: var(--accent);
}

.drop-icon {
  display: block;
  font-size: 2rem;
  margin-bottom: 0.5rem;
}

.options {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem 1.5rem;
  margin: 1rem 0;
  align-items: center;
}

.options label {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.875rem;
  color: var(--muted);
}

.btn {
  font: inherit;
  cursor: pointer;
  border: none;
  border-radius: 8px;
  padding: 0.65rem 1.25rem;
  background: var(--surface-2);
  color: var(--text);
}

.btn:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.btn.primary {
  background: var(--accent);
  color: #fff;
  font-weight: 600;
}

.btn.primary:not(:disabled):hover {
  background: var(--accent-hover);
}

.status {
  margin-top: 1rem;
  padding: 0.75rem 1rem;
  border-radius: 8px;
  background: var(--surface-2);
  font-size: 0.875rem;
}

.status.error {
  border-left: 3px solid #ef4444;
}

.status.ok {
  border-left: 3px solid var(--success);
}

.preview-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: 0.75rem;
  margin-top: 1rem;
}

.preview-grid figure {
  margin: 0;
  background: var(--bg);
  border-radius: 8px;
  overflow: hidden;
  border: 1px solid var(--border);
}

.preview-grid img {
  display: block;
  width: 100%;
  height: auto;
}

.file-list {
  list-style: none;
  margin: 1rem 0 0;
  padding: 0;
}

.file-list li {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.6rem 0.75rem;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  margin-bottom: 0.5rem;
  cursor: grab;
}

.file-list li.dragging {
  opacity: 0.5;
}

.file-list .name {
  flex: 1;
  font-size: 0.875rem;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.file-list .remove {
  background: transparent;
  border: none;
  color: var(--muted);
  cursor: pointer;
  font-size: 1.1rem;
}

.ad-slot {
  position: relative;
  background: var(--surface-2);
  border: 1px dashed var(--border);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100px;
  text-align: center;
}

.ad-slot:not(.is-loaded) {
  content-visibility: auto;
}

.ad-label {
  position: absolute;
  top: 4px;
  left: 8px;
  font-size: 0.65rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--muted);
}

.ad-placeholder {
  margin: 0;
  padding: 1rem;
  font-size: 0.72rem;
  color: var(--muted);
  max-width: 30ch;
}

.ad-below-fold {
  margin-top: 2rem;
}

.ad-post-action {
  margin-top: 1.5rem;
  padding: 1rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.ad-post-action[hidden] {
  display: none !important;
}

.ad-post-action-head {
  margin: 0 0 0.75rem;
  font-size: 0.8125rem;
  color: var(--muted);
}

.seo-block,
.faq {
  margin-top: 2rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
}

.seo-block h2,
.faq h2 {
  font-size: 1.05rem;
}

.seo-block p,
.seo-block li {
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.55;
}

.seo-block ol {
  margin: 0.75rem 0 1rem;
  padding-left: 1.25rem;
}

.faq details {
  margin-bottom: 0.75rem;
  color: var(--muted);
  font-size: 0.9rem;
}

.sister-sites {
  margin-top: 1.5rem;
  padding: 1rem;
  background: var(--surface);
  border-radius: var(--radius);
  border: 1px solid var(--border);
}

.sister-sites h2 {
  margin: 0 0 0.5rem;
  font-size: 0.95rem;
}

.sister-sites ul {
  margin: 0;
  padding-left: 1.1rem;
  font-size: 0.875rem;
}

.sister-sites a {
  color: var(--accent);
}

.site-footer {
  border-top: 1px solid var(--border);
  padding: 1.25rem 0 2rem;
  background: var(--surface);
  font-size: 0.8125rem;
  color: var(--muted);
}

.native-ad {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.35rem;
  padding: 1rem 1.1rem;
  text-align: left;
  text-decoration: none;
  color: var(--text);
  width: 100%;
  min-height: 120px;
  background: linear-gradient(145deg, var(--surface) 0%, var(--surface-2) 100%);
  border-radius: calc(var(--radius) - 2px);
}

.native-ad:hover {
  filter: brightness(1.05);
}

.native-ad-badge {
  font-size: 0.65rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--muted);
}

.native-ad-title {
  font-size: 0.95rem;
}

.native-ad-body {
  font-size: 0.8125rem;
  color: var(--muted);
  line-height: 1.4;
}

.native-ad-cta {
  font-size: 0.8125rem;
  color: var(--accent);
  margin-top: 0.25rem;
}

.ad-slot.is-loaded {
  border-style: solid;
  padding: 0;
  overflow: hidden;
}

.legal-page {
  max-width: 42rem;
  margin: 0 auto;
  padding: 2rem 1rem 3rem;
}

.legal-page h1 {
  font-size: 1.5rem;
}

.legal-page p,
.legal-page li {
  color: var(--muted);
  font-size: 0.9375rem;
}

.hub-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1rem;
  margin: 1.5rem 0;
}

.hub-card {
  display: block;
  padding: 1.25rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  text-decoration: none;
  color: var(--text);
  transition: border-color 0.15s;
}

.hub-card:hover {
  border-color: var(--accent);
}

.hub-card strong {
  display: block;
  font-size: 1.05rem;
  margin-bottom: 0.35rem;
}

.hub-card span {
  font-size: 0.875rem;
  color: var(--muted);
}

.footer-links a {
  color: var(--accent);
  margin-right: 1rem;
}

.ad-strip-primary {
  margin: 1.25rem 0 0;
}

.ad-slot-eager {
  min-height: 120px;
}

.display-ad-wrap {
  width: 100%;
}

.display-ad {
  min-height: 110px;
}

.publisher-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 1rem;
  margin: 1.5rem 0;
}

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

.publisher-card .label {
  display: block;
  font-size: 0.75rem;
  color: var(--muted);
  margin-bottom: 0.35rem;
}

.publisher-card strong {
  font-size: 1.35rem;
}

.publisher-pre {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1rem;
  font-size: 0.8125rem;
  overflow: auto;
}

.publisher-steps {
  color: var(--muted);
  font-size: 0.9rem;
}

.publisher-steps code {
  font-size: 0.8rem;
}