:root {
  color-scheme: light dark;
  --bg: #f5f6f8;
  --surface: #ffffff;
  --surface-2: #f0f2f5;
  --border: #e1e4ea;
  --text: #1a1d24;
  --muted: #667085;
  --accent: #4f46e5;
  --accent-hover: #4338ca;
  --accent-contrast: #ffffff;
  --accent-soft: #eceeff;
  --ok: #067647;   --ok-bg: #e5f6ec;
  --warn: #a15c07; --warn-bg: #fff3dc;
  --bad: #b42318;  --bad-bg: #fdeceb;
  --radius: 10px;
  --shadow: 0 1px 2px rgba(16, 24, 40, .05);
  --font: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --mono: ui-monospace, "Cascadia Mono", Consolas, Menlo, monospace;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0e1116;
    --surface: #161a22;
    --surface-2: #1d222c;
    --border: #2a3040;
    --text: #e7e9ee;
    --muted: #9aa3b2;
    --accent: #8b93ff;
    --accent-hover: #a2a8ff;
    --accent-contrast: #0e1116;
    --accent-soft: #23284a;
    --ok: #5fd39a;   --ok-bg: #12301f;
    --warn: #f2b45a; --warn-bg: #36280f;
    --bad: #ff8a80;  --bad-bg: #3a1815;
    --shadow: none;
  }
}

* { box-sizing: border-box; }
html, body { height: 100%; margin: 0; }
body { background: var(--bg); color: var(--text); font: 14px/1.5 var(--font); -webkit-font-smoothing: antialiased; }
h1, h2, p { margin: 0; }
button, input, textarea, select { font: inherit; color: inherit; }
[hidden] { display: none !important; }
a { color: inherit; text-decoration: none; }

.muted { color: var(--muted); }
.small { font-size: 12.5px; }
.strong { font-weight: 600; }
.mono { font-family: var(--mono); font-size: 13px; }
.grow { flex: 1; min-width: 0; }
.bad-text { color: var(--bad); }
.icon { flex: none; }

/* ---------- Buttons & inputs ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 8px; justify-content: center;
  padding: 8px 14px; border-radius: 8px; border: 1px solid var(--border);
  background: var(--surface); cursor: pointer; font-weight: 500; white-space: nowrap;
  box-shadow: var(--shadow); transition: background .12s, border-color .12s;
}
.btn:hover:not(:disabled) { background: var(--surface-2); }
.btn:disabled { opacity: .5; cursor: not-allowed; }
.btn-primary { background: var(--accent); border-color: var(--accent); color: var(--accent-contrast); }
.btn-primary:hover:not(:disabled) { background: var(--accent-hover); border-color: var(--accent-hover); }
.btn-ghost { background: transparent; border-color: transparent; box-shadow: none; color: var(--muted); }
.btn-sm { padding: 5px 10px; font-size: 13px; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

.input {
  width: 100%; padding: 8px 11px; border-radius: 8px; border: 1px solid var(--border);
  background: var(--surface); transition: border-color .12s, box-shadow .12s;
}
.input:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); }
.input-sm { padding: 6px 10px; font-size: 13px; }
textarea.input { resize: vertical; line-height: 1.5; }

.check { display: flex; align-items: center; gap: 9px; padding: 4px 0; cursor: pointer; }
.check input { width: 16px; height: 16px; accent-color: var(--accent); margin: 0; }

.hint { color: var(--muted); font-size: 12.5px; margin-top: 6px; }
.empty { color: var(--muted); padding: 18px; text-align: center; }
.callout { padding: 10px 12px; border-radius: 8px; }
.callout.bad { background: var(--bad-bg); color: var(--bad); }

/* ---------- Welcome ---------- */
.center { min-height: 100%; display: grid; place-items: center; padding: 24px; }
.card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow); }
.welcome { width: min(460px, 100%); padding: 28px; display: grid; gap: 14px; }
.welcome h1 { font-size: 22px; letter-spacing: -.01em; }
.remembered { display: flex; align-items: center; gap: 12px; padding: 12px; border: 1px solid var(--border); border-radius: 8px; background: var(--surface-2); }
.remembered .strong { display: flex; align-items: center; gap: 4px; word-break: break-all; }
.or { text-align: center; color: var(--muted); font-size: 12.5px; }

.brand { display: flex; align-items: center; gap: 9px; font-weight: 700; letter-spacing: -.01em; }
.brand-mark { display: grid; place-items: center; width: 28px; height: 28px; border-radius: 7px; background: var(--accent); color: var(--accent-contrast); }

/* ---------- Shell ---------- */
.shell { display: grid; grid-template-columns: 248px minmax(0, 1fr); grid-template-rows: 56px minmax(0, 1fr); height: 100vh; }
.topbar { grid-column: 1 / -1; display: flex; align-items: center; gap: 10px; padding: 0 16px; background: var(--surface); border-bottom: 1px solid var(--border); }
.folder-chip { display: flex; align-items: center; gap: 7px; max-width: 320px; padding: 5px 10px; border-radius: 999px; background: var(--accent-soft); color: var(--accent); font-weight: 500; }
.folder-name { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

.sidebar { padding: 14px 12px; background: var(--surface); border-right: 1px solid var(--border); overflow: auto; display: flex; flex-direction: column; gap: 12px; }
.nav { display: flex; flex-direction: column; gap: 2px; }
.nav-group { margin: 12px 8px 4px; font-size: 11.5px; font-weight: 600; text-transform: uppercase; letter-spacing: .06em; color: var(--muted); }
.nav-item { display: flex; align-items: center; gap: 10px; padding: 7px 10px; border-radius: 8px; color: var(--muted); font-weight: 500; }
.nav-item:hover { background: var(--surface-2); color: var(--text); }
.nav-item.active { background: var(--accent-soft); color: var(--accent); }

.main { overflow: auto; padding: 28px 32px 64px; }
.page { max-width: 860px; margin: 0 auto; display: grid; gap: 18px; align-content: start; }
.page-head { display: grid; gap: 4px; margin-bottom: 4px; }
.page-head h1 { font-size: 22px; letter-spacing: -.01em; display: flex; align-items: center; gap: 10px; }
.page-body { display: grid; gap: 16px; }
.tool-icon { display: inline-grid; place-items: center; width: 34px; height: 34px; border-radius: 9px; background: var(--accent-soft); color: var(--accent); flex: none; }

.tool-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 12px; }
.tool-card { display: grid; gap: 6px; align-content: start; padding: 16px; background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow); transition: border-color .12s, transform .12s; }
.tool-card:hover { border-color: var(--accent); transform: translateY(-1px); }
.tool-card .tool-icon { margin-bottom: 4px; }

/* ---------- Tool step cards ---------- */
.step { padding: 18px 20px; display: grid; gap: 10px; }
.step h2 { font-size: 15px; display: flex; align-items: center; gap: 10px; }
.step-num { display: inline-grid; place-items: center; width: 22px; height: 22px; border-radius: 50%; background: var(--accent-soft); color: var(--accent); font-size: 12px; font-weight: 700; }
.tool-controls { border: 0; padding: 0; margin: 0; min-width: 0; display: grid; gap: 16px; }
.folder-preview { min-width: 0; margin-bottom: 12px; }
.folder-preview summary { cursor: pointer; padding: 6px 0; }

.selected { display: flex; align-items: center; gap: 10px; padding: 8px 8px 8px 12px; border: 1px solid var(--border); border-radius: 8px; background: var(--surface-2); }
.path { overflow-wrap: anywhere; }

.picker { border: 1px solid var(--border); border-radius: 8px; display: grid; gap: 8px; padding: 10px; background: var(--surface-2); }
.picker-head { display: flex; align-items: center; gap: 8px; }
.crumbs { display: flex; align-items: center; flex-wrap: wrap; gap: 2px; flex: 1; min-width: 0; color: var(--muted); }
.crumb { display: inline-flex; align-items: center; gap: 5px; padding: 3px 7px; border: 0; border-radius: 6px; background: none; cursor: pointer; color: var(--muted); }
.crumb:hover:not(:disabled) { background: var(--surface); color: var(--text); }
.crumb.current { color: var(--text); font-weight: 600; cursor: default; }
.picker-list { max-height: 280px; overflow: auto; border: 1px solid var(--border); border-radius: 8px; background: var(--surface); }
.picker-row { display: flex; align-items: center; gap: 10px; width: 100%; padding: 8px 12px; border: 0; border-bottom: 1px solid var(--border); background: none; text-align: left; cursor: pointer; }
.picker-row:last-child { border-bottom: 0; }
.picker-row:hover { background: var(--accent-soft); }
.picker-row .grow { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.picker-row .icon:first-child { color: var(--muted); }

.table-wrap { max-height: 380px; overflow: auto; border: 1px solid var(--border); border-radius: 8px; }
.table { width: 100%; border-collapse: collapse; }
.table th, .table td { padding: 8px 12px; text-align: left; vertical-align: top; border-bottom: 1px solid var(--border); }
.table th { position: sticky; top: 0; background: var(--surface-2); font-size: 12px; text-transform: uppercase; letter-spacing: .04em; color: var(--muted); }
.table tr:last-child td { border-bottom: 0; }
.table .num { width: 40px; color: var(--muted); }
.table td.mono { overflow-wrap: anywhere; }

.badge { display: inline-block; padding: 1px 9px; border-radius: 999px; font-size: 12px; font-weight: 600; white-space: nowrap; }
.badge-ok { background: var(--ok-bg); color: var(--ok); }
.badge-warn { background: var(--warn-bg); color: var(--warn); }
.badge-bad { background: var(--bad-bg); color: var(--bad); }
.badge-muted { background: var(--surface-2); color: var(--muted); }

.run-bar { display: flex; align-items: center; gap: 14px; flex-wrap: wrap; }
.run-note { font-size: 13px; }
.result-list { margin: 0; padding-left: 18px; display: grid; gap: 4px; }

/* ---------- Toasts ---------- */
.toasts { position: fixed; right: 16px; bottom: 16px; display: grid; gap: 8px; z-index: 50; }
.toast { padding: 10px 14px; border-radius: 8px; background: var(--text); color: var(--bg); box-shadow: 0 6px 20px rgba(0, 0, 0, .25); max-width: 360px; transition: opacity .35s; }
.toast.out { opacity: 0; }
.toast-ok { background: var(--ok); color: var(--surface); }
.toast-bad { background: var(--bad); color: var(--surface); }

/* ---------- Small screens ---------- */
@media (max-width: 760px) {
  .shell { grid-template-columns: minmax(0, 1fr); grid-template-rows: 56px auto minmax(0, 1fr); }
  .sidebar { border-right: 0; border-bottom: 1px solid var(--border); max-height: 38vh; }
  .main { padding: 20px 16px 48px; }
  .folder-chip { max-width: 140px; }
}