:root {
  --bg: #f7f8fb;
  --fg: #11161f;
  --muted: #555f72;
  --accent: #0f766e;
  --accent-dark: #115e59;
  --accent-soft: #ecfdf5;
  --border: #e4e7ec;
  --card-bg: #ffffff;
  --success: #15803d;
  --error: #b91c1c;
  --warn: #92400e;
}

* { box-sizing: border-box; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", sans-serif;
  background: var(--bg);
  color: var(--fg);
  margin: 0;
  line-height: 1.6;
}

.container {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 20px;
}

.site-header {
  background: #fff;
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 10;
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.logo {
  font-weight: 700;
  font-size: 1.2rem;
  color: var(--accent);
  text-decoration: none;
  letter-spacing: -0.01em;
}

.logo .dot { color: var(--fg); }

.site-header nav { display: flex; gap: 16px; flex-wrap: wrap; }
.site-header nav a {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.92rem;
}
.site-header nav a:hover { color: var(--accent); }

.hero {
  text-align: center;
  padding: 70px 0 30px;
}

.hero h1 {
  font-size: 2.7rem;
  margin: 0 0 18px;
  letter-spacing: -0.02em;
  line-height: 1.15;
}

.hero .lead {
  font-size: 1.15rem;
  color: var(--muted);
  max-width: 720px;
  margin: 0 auto;
}

.privacy-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--accent-soft);
  color: var(--accent-dark);
  border: 1px solid #a7f3d0;
  padding: 6px 12px;
  border-radius: 999px;
  font-size: 0.82rem;
  font-weight: 600;
  margin-bottom: 18px;
}

.ad-slot {
  background: #eef1f6;
  border: 1px dashed #cfd6e0;
  color: #99a3ad;
  text-align: center;
  padding: 20px;
  margin: 30px 0;
  border-radius: 6px;
  min-height: 90px;
  font-size: 0.85rem;
}
.ad-slot::before { content: "Ad space \2014 Google AdSense"; }

.ad-slot-post {
  opacity: 0;
  max-height: 0;
  padding: 0;
  margin: 0;
  min-height: 0;
  border: 0;
  overflow: hidden;
  transition: opacity 0.4s ease, max-height 0.4s ease, padding 0.4s ease, margin 0.4s ease;
}
.ad-slot-post.visible {
  opacity: 1;
  max-height: 400px;
  padding: 20px;
  margin: 30px 0;
  min-height: 90px;
  border: 1px dashed #cfd6e0;
}

.noscript-banner {
  background: #fef2f2;
  color: var(--error);
  border: 1px solid #fecaca;
  padding: 14px 18px;
  border-radius: 8px;
  margin: 20px 0;
  text-align: center;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 16px;
  margin: 22px 0;
}

.card {
  display: block;
  padding: 20px;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  text-decoration: none;
  color: inherit;
  transition: transform 0.15s, box-shadow 0.15s, border-color 0.15s;
}
.card:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0,0,0,0.06);
  border-color: var(--accent);
}
.card h3 {
  margin: 0 0 6px;
  color: var(--accent);
  font-size: 1.08rem;
}
.card p {
  margin: 0;
  color: var(--muted);
  font-size: 0.92rem;
}

.features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 18px;
  margin-top: 18px;
}
.features div {
  padding: 18px;
  background: #fff;
  border-radius: 10px;
  border: 1px solid var(--border);
}
.features h3 {
  margin: 0 0 6px;
  font-size: 1rem;
  color: var(--accent-dark);
}
.features p {
  margin: 0;
  color: var(--muted);
  font-size: 0.92rem;
}

.faq details {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 14px 18px;
  margin: 10px 0;
}
.faq summary { cursor: pointer; font-weight: 600; }

.site-footer {
  margin-top: 80px;
  padding: 30px 0;
  background: #fff;
  border-top: 1px solid var(--border);
  font-size: 0.9rem;
  color: var(--muted);
}
.site-footer .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
}
.site-footer a { color: var(--muted); text-decoration: none; margin: 0 4px; }
.site-footer a:hover { color: var(--accent); }

/* Converter page */
.converter-app {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 28px;
  margin: 30px 0;
}

.dropzone {
  border: 2px dashed var(--border);
  border-radius: 12px;
  padding: 48px 20px;
  text-align: center;
  cursor: pointer;
  transition: border-color 0.15s, background 0.15s;
}
.dropzone:hover, .dropzone.dragover {
  border-color: var(--accent);
  background: var(--accent-soft);
}
.dropzone p { margin: 8px 0; color: var(--muted); }
.dropzone .big { font-size: 1.1rem; color: var(--fg); font-weight: 600; }
.dropzone input[type=file] { display: none; }

.btn {
  background: var(--accent);
  color: #fff;
  border: none;
  padding: 12px 22px;
  border-radius: 8px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
  display: inline-block;
}
.btn:hover { background: var(--accent-dark); }
.btn:disabled { background: #cbd5e1; cursor: not-allowed; }
.btn-secondary {
  background: #fff;
  color: var(--accent);
  border: 1px solid var(--accent);
}
.btn-secondary:hover { background: var(--accent-soft); }

.file-list { margin: 18px 0; }
.file-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 14px;
  background: #f6f8fa;
  border-radius: 6px;
  margin: 6px 0;
}
.file-item .name { font-weight: 500; word-break: break-all; }
.file-item .size { color: var(--muted); font-size: 0.85rem; margin-left: 12px; }
.file-item .remove {
  background: none;
  border: none;
  color: var(--error);
  cursor: pointer;
  font-size: 1.2rem;
  padding: 0 8px;
}

.status {
  margin: 14px 0;
  padding: 12px;
  border-radius: 6px;
  font-size: 0.95rem;
}
.status.info { background: #eef6f5; color: var(--accent-dark); }
.status.success { background: #f0fdf4; color: var(--success); }
.status.error { background: #fef2f2; color: var(--error); }
.status.warn { background: #fffbeb; color: var(--warn); }
.status.hidden { display: none; }

.progress {
  width: 100%;
  height: 6px;
  background: #e5e7eb;
  border-radius: 3px;
  margin: 8px 0;
  overflow: hidden;
}
.progress-bar {
  height: 100%;
  background: var(--accent);
  width: 0%;
  transition: width 0.2s;
}

.actions {
  margin-top: 20px;
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.controls {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  margin: 18px 0;
}
.controls label {
  font-size: 0.92rem;
  color: var(--muted);
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.controls select, .controls input, .controls textarea {
  padding: 8px 10px;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 0.95rem;
  font-family: inherit;
  background: #fff;
}

.page-intro { text-align: center; padding: 40px 0 10px; }
.page-intro h1 { font-size: 2.2rem; margin: 0 0 12px; }
.page-intro p { color: var(--muted); max-width: 700px; margin: 0 auto; font-size: 1.05rem; }

.content-section {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 26px;
  margin: 24px 0;
}
.content-section h2 { margin-top: 0; font-size: 1.4rem; }
.content-section h3 { font-size: 1.08rem; margin-top: 22px; }

/* Page picker (for reorder/extract pages) */
.page-thumbs {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
  gap: 12px;
  margin: 18px 0;
}
.page-thumb {
  position: relative;
  border: 2px solid var(--border);
  border-radius: 6px;
  background: #fff;
  cursor: pointer;
  padding: 6px;
  text-align: center;
  user-select: none;
}
.page-thumb img, .page-thumb canvas {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 3px;
}
.page-thumb .label {
  display: block;
  font-size: 0.78rem;
  color: var(--muted);
  margin-top: 4px;
}
.page-thumb.selected {
  border-color: var(--accent);
  box-shadow: 0 0 0 2px rgba(15,118,110,0.15);
}
.page-thumb.dragging { opacity: 0.5; }

/* Consent banner */
#ptb-consent {
  position: fixed;
  left: 16px;
  right: 16px;
  bottom: 16px;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 10px;
  box-shadow: 0 10px 40px rgba(0,0,0,0.12);
  padding: 16px 18px;
  z-index: 9999;
  max-width: 720px;
  margin: 0 auto;
}
.ptb-consent-inner { display: flex; align-items: center; gap: 16px; flex-wrap: wrap; }
.ptb-consent-inner p { margin: 0; flex: 1 1 280px; font-size: 0.92rem; color: var(--muted); }
.ptb-consent-actions { display: flex; gap: 8px; flex-wrap: wrap; }
#ptb-consent .btn { padding: 8px 14px; font-size: 0.9rem; }

@media (max-width: 640px) {
  .site-header .container { flex-direction: column; height: auto; padding: 12px 20px; }
  .site-header nav { margin-top: 10px; gap: 10px; }
  .site-header nav a { font-size: 0.85rem; }
  .hero h1 { font-size: 1.9rem; }
  .hero { padding: 30px 0 20px; }
  #ptb-consent { left: 8px; right: 8px; bottom: 8px; padding: 14px; }
}