:root {
  --bg: #f3f1ec;
  --ink: #1c1b19;
  --muted: #5c574f;
  --line: #d5cfc3;
  --accent: #0f5c4c;
  --danger: #8b2e2e;
  --panel: #fffdf8;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: "Segoe UI", Tahoma, sans-serif;
  color: var(--ink);
  background:
    radial-gradient(circle at top left, #e7efe9, transparent 40%),
    linear-gradient(180deg, #efebe3, var(--bg));
  min-height: 100vh;
}
a { color: var(--accent); }
.top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 1.5rem;
  border-bottom: 1px solid var(--line);
  background: rgba(255, 253, 248, 0.9);
}
.brand { font-weight: 700; text-decoration: none; color: var(--ink); font-size: 1.2rem; }
nav { display: flex; gap: 1rem; align-items: center; }
nav a { text-decoration: none; color: var(--muted); }
main { max-width: 960px; margin: 1.5rem auto; padding: 0 1rem 3rem; }
.panel {
  background: var(--panel);
  border: 1px solid var(--line);
  padding: 1.25rem;
  margin-bottom: 1rem;
}
.panel.narrow { max-width: 420px; }
.row { display: flex; justify-content: space-between; align-items: center; gap: 1rem; }
h1, h2, h3 { margin-top: 0; }
label { display: block; margin: 0.75rem 0; font-size: 0.95rem; }
input, textarea, button {
  display: block;
  width: 100%;
  margin-top: 0.35rem;
  padding: 0.55rem 0.65rem;
  border: 1px solid var(--line);
  background: #fff;
  font: inherit;
}
button, .btn {
  width: auto;
  display: inline-block;
  background: var(--accent);
  color: #fff;
  border: none;
  text-decoration: none;
  cursor: pointer;
  padding: 0.55rem 0.9rem;
}
button.danger { background: var(--danger); }
.inline { display: inline; margin: 0; }
.inline button { width: auto; background: transparent; color: var(--muted); border: 1px solid var(--line); }
.error { color: var(--danger); background: #f8e8e8; padding: 0.6rem 0.8rem; }
table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: 0.5rem; border-bottom: 1px solid var(--line); vertical-align: top; }
.list { padding-left: 1.1rem; }
.pdf { width: 100%; height: 70vh; border: 1px solid var(--line); margin-top: 1rem; background: #fff; }
code { font-size: 0.9em; }

/* Editor / multi-upload UI */
.tabs { display: flex; gap: 0.5rem; border-bottom: 1px solid var(--line); margin: 0.5rem 0 1rem; }
.tab {
  width: auto; display: inline-block; background: transparent; color: var(--muted);
  border: none; border-bottom: 2px solid transparent; padding: 0.4rem 0.8rem; cursor: pointer;
}
.tab.active { color: var(--accent); border-bottom-color: var(--accent); }
.tab-pane.hidden { display: none; }
.hint { color: var(--muted); font-size: 0.85rem; }
.editor-bar { display: flex; align-items: center; gap: 0.75rem; margin: 0.5rem 0; }
button.ghost {
  background: transparent; color: var(--accent); border: 1px solid var(--line);
  padding: 0.3rem 0.6rem;
}
button.ghost.danger { color: var(--danger); }
.file-row { border: 1px solid var(--line); padding: 0.5rem; margin-bottom: 0.6rem; background: #fff; }
.file-head { display: flex; align-items: center; gap: 0.5rem; margin-bottom: 0.4rem; }
.file-head input[type="radio"] { width: auto; margin: 0; }
.path-in { flex: 1; margin: 0; }
.file-row textarea {
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
  font-size: 0.85rem; white-space: pre; overflow-x: auto;
}
.entry-list { margin: 0.5rem 0; }
.entry-row { display: block; margin: 0.25rem 0; font-size: 0.9rem; }
.entry-row input[type="radio"] { width: auto; display: inline; margin-right: 0.4rem; }

/* Code blocks / copy buttons (aba API) */
.code-wrap { position: relative; margin: 0.5rem 0 1rem; }
.code-block {
  background: #1c1b19; color: #f3f1ec; padding: 0.8rem 0.9rem; margin: 0;
  border-radius: 4px; overflow-x: auto;
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
  font-size: 0.82rem; line-height: 1.4; white-space: pre;
}
.code-block.md-block { max-height: 420px; overflow-y: auto; }
.copy-btn {
  position: absolute; top: 0.4rem; right: 0.4rem; width: auto;
  background: rgba(255,255,255,0.12); color: #f3f1ec; border: 1px solid rgba(255,255,255,0.25);
  padding: 0.25rem 0.5rem; font-size: 0.8rem;
}
.copy-btn:hover { background: rgba(255,255,255,0.22); }