:root {
  color-scheme: light;
  --text: #171717;
  --muted: #444;
  --line: #222;
  --panel: #e6e6e6;
}

* { box-sizing: border-box; }
html { scrollbar-gutter: stable; }

body {
  margin: 0;
  color: var(--text);
  background: repeating-conic-gradient(#ccc 0% 25%, #d6d6d6 0% 50%) 0 0 / 4px 4px;
  font: 14px/1.45 Arial, Helvetica, sans-serif;
}

.shell { width: 100%; }

.toolbar {
  display: flex;
  flex-wrap: wrap;
  position: sticky;
  top: 0;
  z-index: 100;
  gap: 0;
  padding: 0 8px;
  border-bottom: 2px solid var(--line);
  background: #f4f4f4;
  box-shadow: 0 1px 0 #fff;
}

.toolbar a {
  padding: 5px 12px;
  color: var(--text);
  text-decoration: none;
  font-weight: bold;
}

.toolbar a.active,
.toolbar a:hover {
  color: #fff;
  background: #222;
}

.toolbar a:focus-visible { outline: 2px dashed currentColor; outline-offset: -3px; }

.panel, .tool-frame-wrap {
  margin: 12px;
  padding: 14px;
  border: 1px solid var(--line);
  background: var(--panel);
  box-shadow: 2px 2px 0 #333;
}

.tool-frame-wrap {
  padding: 0;
  background: #e6e6e6;
}

.tool-frame {
  display: block;
  width: 100%;
  height: 700px;
  border: 0;
}

h1 { margin: 0 0 8px; font-size: 20px; }
h2, h3 { margin: 0 0 8px; font-size: 16px; }
p { margin: 0; color: var(--muted); }
.cards { display: grid; gap: 14px; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); }
.card { border: 1px solid var(--line); padding: 14px; background: #fff; }
.card p { margin-bottom: 12px; }
.card .open-tool {
  display: inline-block;
  padding: 4px 12px;
  border: 1px solid var(--line);
  border-radius: 3px;
  color: var(--text);
  background: #eee;
  box-shadow: inset 1px 1px #fff, inset -1px -1px #999;
  text-decoration: none;
  font-weight: bold;
}

.home-content { max-width: 1200px; margin: 0 auto; padding: 0 12px 24px; }
.home-intro { margin: 16px 0; padding: 0; }
.home-intro p { padding: 14px 16px; }
.window-title {
  margin: 0;
  padding: 6px 12px;
  border-bottom: 1px solid var(--line);
  background: repeating-linear-gradient(to bottom, #f4f4f4 0 2px, #d0d0d0 2px 3px);
  font-size: 16px;
  text-align: center;
  text-shadow: 1px 1px #fff;
}
.home-page .cards { grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px; }
.home-page .card { padding: 0; background: var(--panel); box-shadow: 2px 2px 0 #333; }
.tool-preview { display: block; border-bottom: 1px solid var(--line); background: #e6e6e6; }
.tool-preview img { display: block; width: 100%; height: 180px; object-fit: contain; }
.tool-preview:focus-visible, .open-tool:focus-visible { outline: 3px dashed #222; outline-offset: -4px; }
.card-content { padding: 14px; }

.tool-description { margin: 12px 16px 18px; font-size: 13px; }
.tool-description h2 { margin: 10px 0 4px; font-size: 15px; }

@media (max-width: 900px) {
  .home-page .cards { grid-template-columns: repeat(2, minmax(0, 1fr)); margin: 0 auto; }
}

@media (max-width: 480px) {
  .home-page .cards { grid-template-columns: 1fr; }
  .toolbar { padding: 0 3px; }
  .toolbar a { padding: 6px; font-size: 12px; }
  .panel, .tool-frame-wrap { margin: 6px; }
  .home-content { padding: 0 6px 18px; }
  .home-intro { margin: 12px 0; }
}

.share { position: relative; margin-left: auto; display: flex; }
.share-button {
  padding: 5px 12px;
  border: 0;
  border-left: 1px solid var(--line);
  background: transparent;
  color: var(--text);
  font: inherit;
  font-weight: bold;
  cursor: pointer;
}
.share-button:hover, .share-button[aria-expanded="true"] { color: #fff; background: #222; }
.share-button:focus-visible { outline: 2px dashed currentColor; outline-offset: -3px; }
.share-menu {
  position: absolute;
  top: 100%;
  right: 0;
  z-index: 200;
  min-width: 190px;
  padding: 3px 0;
  border: 1px solid var(--line);
  background: #f4f4f4;
  box-shadow: 2px 2px 0 #333;
}
.share-menu[hidden] { display: none; }
.toolbar .share-menu a { display: block; padding: 4px 14px; font-weight: normal; white-space: nowrap; }
.toolbar .share-menu a:focus { color: #fff; background: #222; outline: none; }
@media (max-width: 640px) {
  .share-button { padding: 6px; font-size: 12px; }
}