:root {
  --bg: #f7fafc;
  --bg-muted: #eef4f7;
  --card: #ffffff;
  --text: #12202b;
  --muted: #546370;
  --border: #d9e4ea;
  --shadow: 0 12px 30px rgba(11, 46, 60, 0.08);

  --accent-1: #0b2e3c;
  --accent-2: #0ea5a4;
  --accent-gradient: linear-gradient(135deg, var(--accent-1), var(--accent-2));

  --radius: 16px;
  --radius-sm: 10px;
  --focus: rgba(14, 165, 164, 0.35);

  --space-1: 8px;
  --space-2: 12px;
  --space-3: 16px;
  --space-4: 24px;
  --space-5: 32px;

  font-family: system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
  line-height: 1.5;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
}

body {
  color: var(--text);
  background:
    radial-gradient(circle at 8% -6%, rgba(14, 165, 164, 0.1), transparent 32%),
    radial-gradient(circle at 88% 2%, rgba(11, 46, 60, 0.09), transparent 40%),
    var(--bg);
  min-height: 100vh;
}

header,
footer,
main {
  width: min(1100px, calc(100% - 32px));
  margin-left: auto;
  margin-right: auto;
}

header {
  margin-top: var(--space-3);
  background: rgba(255, 255, 255, 0.92);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: var(--space-2) var(--space-3);
}

main {
  padding: var(--space-4) 0 var(--space-5);
}

footer {
  margin-bottom: var(--space-4);
  margin-top: var(--space-2);
  border-top: 1px solid var(--border);
  padding: var(--space-3) 0;
  color: var(--muted);
}

footer .nav a:not(.brand) {
  color: var(--muted);
}

a {
  color: var(--accent-1);
  text-decoration: none;
}

a:hover {
  color: #0a6074;
}

a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible,
.dropzone:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 2px;
}

.nav {
  display: flex;
  gap: var(--space-2);
  flex-wrap: wrap;
  align-items: center;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 600;
  font-size: 1.1rem;
  color: var(--accent-1);
  padding: 4px 2px;
}

.brand-icon {
  width: 28px;
  height: 28px;
}

.brand-text {
  letter-spacing: 0.2px;
}

.nav a:not(.brand) {
  display: inline-flex;
  align-items: center;
  padding: 8px 12px;
  border-radius: 999px;
  border: 1px solid transparent;
  color: var(--muted);
  font-weight: 600;
}

.nav a:not(.brand):hover {
  background: #ffffff;
  border-color: var(--border);
  color: var(--accent-1);
}

.trust {
  margin: var(--space-2) 0 0;
  color: var(--muted);
  font-size: 13px;
}

.tool-title {
  margin: 0 0 6px;
  font-size: clamp(1.5rem, 1.4rem + 0.6vw, 2rem);
  line-height: 1.2;
}

.tool-desc {
  margin: 0 0 var(--space-3);
  color: var(--muted);
  max-width: 70ch;
}

.brand-tagline {
  color: var(--muted);
  margin-top: 8px;
  font-size: 1rem;
}

h2 {
  margin: 0 0 var(--space-2);
  font-size: 1.2rem;
  line-height: 1.3;
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: var(--space-3);
}

.hint {
  font-size: 13px;
  color: var(--muted);
}

.label {
  display: block;
  font-size: 13px;
  color: #203241;
  margin-bottom: 6px;
  font-weight: 600;
}

input[type="number"],
input[type="text"],
input[type="email"],
input[type="search"],
input[type="password"],
textarea,
select {
  width: 100%;
  min-height: 42px;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: #ffffff;
  color: var(--text);
}

input[type="range"] {
  width: 100%;
  accent-color: var(--accent-2);
}

button,
.button-link,
.item-actions a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 40px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  padding: 9px 14px;
  background: #ffffff;
  color: var(--accent-1);
  font-weight: 700;
  text-decoration: none;
  cursor: pointer;
  box-shadow: 0 2px 8px rgba(11, 46, 60, 0.06);
}

button:hover,
.button-link:hover,
.item-actions a:hover {
  background: #f6fbfc;
  border-color: #b8cbd5;
}

.row > button:first-child,
.item-actions button:first-child,
.button-link.primary,
button.primary {
  color: #ffffff;
  border-color: rgba(11, 46, 60, 0.25);
  background: var(--accent-gradient);
  box-shadow: 0 8px 20px rgba(11, 46, 60, 0.24);
}

.row > button:first-child:hover,
.item-actions button:first-child:hover,
.button-link.primary:hover,
button.primary:hover {
  box-shadow: 0 10px 24px rgba(11, 46, 60, 0.28);
}

button:disabled,
button[disabled],
.button-link[aria-disabled="true"] {
  opacity: 0.55;
  cursor: not-allowed;
  box-shadow: none;
  transform: none;
}

.row {
  display: flex;
  gap: var(--space-2);
  align-items: center;
  flex-wrap: wrap;
}

.grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-3);
}

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

.box {
  padding: var(--space-3);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-muted);
}

.dropzone {
  border: 2px dashed #8ab5c1;
  background: linear-gradient(180deg, #f9feff 0%, #f3fbfd 100%);
  border-radius: var(--radius);
  padding: var(--space-4);
  cursor: pointer;
}

.dropzone:hover {
  border-color: var(--accent-2);
}

.error {
  margin-top: var(--space-2);
  padding: 10px 12px;
  border: 1px solid #f2caca;
  background: #fff5f5;
  border-radius: var(--radius-sm);
  color: #8d1f1f;
  font-size: 14px;
}

.list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.item {
  display: flex;
  gap: var(--space-2);
  align-items: center;
  justify-content: space-between;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 10px;
  background: #fff;
}

.item-left {
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-width: 0;
}

.item-name {
  font-weight: 700;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  max-width: 520px;
}

.item-meta {
  font-size: 12px;
  color: var(--muted);
}

.item-actions {
  display: flex;
  gap: var(--space-1);
  flex-wrap: wrap;
}

.pdf-preview {
  margin-top: var(--space-2);
}

.thumb-strip {
  display: flex;
  gap: var(--space-1);
  flex-wrap: wrap;
}

.thumb {
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 6px;
  background: #fafdff;
}

.thumb-cap {
  font-size: 12px;
  color: var(--muted);
  margin-top: 4px;
  text-align: center;
}

.pdf-thumb-canvas {
  display: block;
  width: 92px;
  height: auto;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: #fff;
}

.progress-wrap {
  margin-top: var(--space-2);
}

progress {
  width: 100%;
  height: 10px;
}

.category-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-3);
  margin-top: var(--space-3);
}

@media (min-width: 900px) {
  .category-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.category-grid > .card .tool-grid {
  grid-template-columns: 1fr;
}

.category-hero {
  background: linear-gradient(180deg, #f8fcff 0%, #ffffff 100%);
}

.chip-row {
  display: flex;
  gap: var(--space-1);
  flex-wrap: wrap;
}

.chip {
  border: 1px solid #cae0e8;
  border-radius: 999px;
  font-size: 12px;
  padding: 4px 10px;
  background: #f8feff;
  color: #2d5460;
}

.tool-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
}

@media (min-width: 760px) {
  .tool-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (min-width: 1080px) {
  .tool-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.tool-card {
  display: block;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: var(--space-3);
  text-decoration: none;
  background: #ffffff;
  box-shadow: 0 4px 14px rgba(11, 46, 60, 0.05);
}

.tool-card:hover {
  border-color: #a6c9d3;
  box-shadow: 0 10px 24px rgba(11, 46, 60, 0.1);
}

.tool-card strong {
  display: block;
  margin-bottom: 4px;
  color: var(--accent-1);
}

.tool-card span {
  display: block;
  color: var(--muted);
  font-size: 13px;
}

.category-links {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.visual-picker-wrap {
  margin-top: 10px;
}

.visual-picker {
  margin-top: 10px;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
  gap: 8px;
}

.visual-page-item {
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: #fff;
  padding: 6px;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
}

.visual-page-item .pdf-thumb-canvas {
  width: 76px;
}

.visual-page-item.is-selected {
  border-color: var(--accent-2);
  background: #f2fcfc;
}

.visual-page-label {
  font-size: 12px;
  color: var(--muted);
}

.seo-block {
  margin-top: var(--space-3);
}

@media (max-width: 640px) {
  header,
  footer,
  main {
    width: calc(100% - 20px);
  }

  .row > button:first-child,
  .button-link,
  button {
    width: 100%;
  }

  .row {
    align-items: stretch;
  }
}