:root {
  --black: #121210;
  --panel: #1b1b17;
  --green: #14a34a;
  --green-deep: #0d7a37;
  --yellow: #ffcf00;
  --paper: #f4f5f1;
  --surface: #ffffff;
  --ink: #17190f;
  --line: #dfe1d8;
  --muted: #666a5c;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
}

.wrap { max-width: 980px; margin: 0 auto; padding: 0 20px; }

.site-head {
  background: var(--black);
  color: var(--paper);
  padding: 26px 0 24px;
  border-bottom: 4px solid var(--yellow);
}

.head-row { display: flex; flex-direction: column; gap: 6px; }

.brand { display: flex; align-items: center; gap: 10px; }
.brand-logo { width: 38px; height: 38px; border-radius: 8px; }
.brand-name { font-size: 22px; font-weight: 800; letter-spacing: -0.02em; }

.site-sub { margin: 0; color: #b7bcae; font-size: 13.5px; }

main.wrap { padding: 28px 20px 60px; }

.controls { margin-bottom: 18px; }

#searchBox {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
  font-size: 14px;
  margin-bottom: 12px;
  background: var(--surface);
}
#searchBox:focus { outline: 2px solid var(--green); }

.cat-tabs { display: flex; flex-wrap: wrap; gap: 8px; }

.cat-tab {
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--ink);
  padding: 7px 14px;
  border-radius: 20px;
  font-size: 12.5px;
  cursor: pointer;
  font-weight: 600;
}
.cat-tab.active { background: var(--green); border-color: var(--green); color: #fff; }
.cat-tab:hover:not(.active) { border-color: var(--green); }

.tool-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(230px, 1fr));
  gap: 14px;
  margin-top: 18px;
}

.tool-card {
  text-align: left;
  background: var(--surface);
  border: 1px solid var(--line);
  border-left: 4px solid var(--green);
  border-radius: 6px;
  padding: 16px;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  gap: 5px;
  font-family: inherit;
  transition: border-color 0.15s ease, transform 0.1s ease;
}
.tool-card:hover { border-left-color: var(--yellow); transform: translateY(-1px); }
.tool-card strong { font-size: 15px; }
.tool-card span { font-size: 12.5px; color: var(--muted); line-height: 1.4; }

.mini-badge {
  display: inline-block;
  font-style: normal;
  font-size: 10.5px;
  font-weight: 700;
  background: #fff6d6;
  color: #8a6d00;
  padding: 2px 7px;
  border-radius: 10px;
  width: fit-content;
}

.empty-state { color: var(--muted); font-size: 13px; grid-column: 1 / -1; }

.workspace {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 26px;
}

.back-btn {
  background: none;
  border: none;
  color: var(--green-deep);
  font-size: 13px;
  cursor: pointer;
  padding: 0 0 14px;
  font-weight: 700;
}

.workspace h2 { margin: 0 0 6px; font-size: 20px; display: inline-block; }

.badge {
  display: inline-block;
  margin-left: 10px;
  font-size: 11px;
  font-weight: 700;
  background: #fff6d6;
  color: #8a6d00;
  padding: 3px 9px;
  border-radius: 10px;
  vertical-align: middle;
}

.wsNote { margin: 8px 0 20px; font-size: 13px; color: var(--muted); line-height: 1.6; max-width: 640px; }

.dropzone {
  border: 2px dashed var(--line);
  border-radius: 8px;
  padding: 26px;
  text-align: center;
  background: var(--paper);
}
.dropzone.drag { border-color: var(--green); background: #eafaf0; }
.dropzone p { margin: 0 0 12px; font-size: 13px; color: var(--muted); }

.pick-btn {
  display: inline-block;
  background: var(--green);
  color: #fff;
  padding: 9px 18px;
  border-radius: 6px;
  font-size: 13px;
  font-weight: 700;
  cursor: pointer;
}
.pick-btn:hover { background: var(--green-deep); }

.file-list { margin-top: 14px; font-size: 12.5px; text-align: left; }
.file-list div { padding: 4px 0; font-family: ui-monospace, monospace; }

#extraOptions { margin-top: 16px; font-size: 13px; display: flex; flex-wrap: wrap; gap: 14px; }
#extraOptions label { display: flex; flex-direction: column; gap: 4px; font-weight: 600; font-size: 12.5px; color: var(--muted); }
#extraOptions input, #extraOptions select {
  padding: 8px 10px; border: 1px solid var(--line); border-radius: 6px; font-size: 13px; min-width: 140px;
}

.convert-btn {
  margin-top: 20px;
  background: var(--yellow);
  color: var(--ink);
  border: none;
  padding: 12px 24px;
  border-radius: 6px;
  font-size: 14px;
  font-weight: 800;
  cursor: pointer;
  display: block;
}
.convert-btn:disabled { opacity: 0.4; cursor: not-allowed; }
.convert-btn:not(:disabled):hover { background: #e6ba00; }

.progress-box { margin-top: 14px; font-size: 13px; color: var(--muted); }

.unsupported-box {
  background: #fff3ea;
  border: 1px solid #f0c9a8;
  color: #7a3d0a;
  padding: 10px 14px;
  border-radius: 6px;
  font-size: 12.5px;
  margin-bottom: 16px;
}

.results { margin-top: 18px; display: flex; flex-wrap: wrap; gap: 8px; }
.results a {
  display: inline-block;
  background: var(--black);
  color: var(--yellow);
  padding: 9px 16px;
  border-radius: 6px;
  font-size: 13px;
  text-decoration: none;
  font-weight: 700;
}

.status.error { color: #b3261e; font-size: 13px; }

.site-foot {
  border-top: 1px solid var(--line);
  padding: 20px 0;
  font-size: 12px;
  color: var(--muted);
  text-align: center;
}
.foot-credit { margin-top: 4px; font-weight: 700; color: var(--green-deep); }

/* hidden attribute must always win (grid/flex rules were overriding it) */
[hidden] { display: none !important; }
.back-btn { background: var(--green); color: #fff; border-radius: 6px; padding: 8px 14px; margin-bottom: 14px; }
.back-btn:hover { background: var(--green-deep); }
.back-btn.bottom { margin: 18px 0 0; }