:root {
  --bg: #0b0b0f;
  --panel: #15151a;
  --panel-2: #1d1d24;
  --panel-3: #25252e;
  --border: rgba(255, 255, 255, 0.08);
  --border-2: rgba(255, 255, 255, 0.15);
  --text: #f2f2f5;
  --text-2: rgba(255, 255, 255, 0.64);
  --text-3: rgba(255, 255, 255, 0.38);
  --accent: #f0f0f4;
  --proxy: #d8d8df;
  --direct: #7e7e88;
  --block: #ff5a4d;
  --green: #35c06b;
  --r: 16px;
  --r-sm: 11px;
  --r-xs: 8px;
  --maxw: 800px;
  --glow: #181820;
}

/* Light theme — same monochrome system, inverted. */
:root.light {
  --bg: #f3f4f7;
  --panel: #ffffff;
  --panel-2: #eef0f3;
  --panel-3: #e4e6ea;
  --border: rgba(0, 0, 0, 0.10);
  --border-2: rgba(0, 0, 0, 0.20);
  --text: #16161b;
  --text-2: rgba(0, 0, 0, 0.60);
  --text-3: rgba(0, 0, 0, 0.40);
  --accent: #1d1d24;
  --proxy: #3a3a42;
  --direct: #a7a7af;
  --block: #d83a2e;
  --green: #1f9d54;
  --glow: #ffffff;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { -webkit-text-size-adjust: 100%; }
body {
  background: radial-gradient(130% 90% at 50% -20%, var(--glow) 0%, var(--bg) 55%) fixed;
  color: var(--text);
  font-family: 'Segoe UI Variable', 'Segoe UI', -apple-system, system-ui, sans-serif;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh; font-size: 14px; line-height: 1.5;
  transition: background .2s, color .2s;
}
:root.light .top { background: rgba(243, 244, 247, 0.72); }
[dir="rtl"] body { font-family: 'Segoe UI', Tahoma, system-ui, sans-serif; }

/* mode visibility */
body.mode-simple .mode-advanced-only { display: none !important; }
body.mode-advanced .mode-simple-only { display: none !important; }

/* ── Header ── */
.top {
  position: sticky; top: 0; z-index: 20; border-bottom: 1px solid var(--border);
  background: rgba(11, 11, 15, 0.72); backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px);
}
.top-inner { max-width: var(--maxw); margin: 0 auto; padding: 13px 20px; display: flex; align-items: center; justify-content: space-between; gap: 16px; }
.brand { display: flex; align-items: center; gap: 9px; font-weight: 600; font-size: 15px; min-width: 0; }
.brand span { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.brand svg { color: var(--accent); flex-shrink: 0; }
.top-right { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
.icon-link { color: var(--text-3); display: inline-flex; transition: color .15s; }
.icon-link:hover { color: var(--text); }
.theme-btn {
  display: inline-grid; place-items: center; width: 34px; height: 34px;
  background: var(--panel-2); border: 1px solid var(--border); border-radius: 999px;
  color: var(--text-2); cursor: pointer; transition: border-color .15s, background .15s, color .15s;
}
.theme-btn:hover { border-color: var(--border-2); color: var(--text); background: var(--panel-3); }

/* ── Language picker ── */
.lang { position: relative; }
.lang-btn {
  display: inline-flex; align-items: center; gap: 7px; background: var(--panel-2);
  border: 1px solid var(--border); color: var(--text); border-radius: 999px;
  padding: 7px 11px; font: inherit; font-size: 13px; cursor: pointer; transition: border-color .15s, background .15s;
}
.lang-btn:hover { border-color: var(--border-2); background: var(--panel-3); }
.lang-btn .caret { color: var(--text-3); transition: transform .2s; }
.lang-btn[aria-expanded="true"] .caret { transform: rotate(180deg); }
.lang-pop {
  position: absolute; top: calc(100% + 8px); inset-inline-end: 0; min-width: 220px;
  background: var(--panel-2); border: 1px solid var(--border-2); border-radius: var(--r);
  padding: 6px; box-shadow: 0 18px 50px rgba(0, 0, 0, 0.5); z-index: 30;
}
.lang-item {
  display: flex; align-items: center; gap: 11px; width: 100%; padding: 9px 10px;
  background: none; border: none; border-radius: var(--r-sm); color: var(--text);
  font: inherit; font-size: 14px; cursor: pointer; text-align: start; transition: background .12s;
}
.lang-item:hover { background: var(--panel-3); }
.lang-item.active { background: rgba(255, 255, 255, 0.06); }
.lang-badge {
  flex-shrink: 0; width: 30px; height: 22px; display: grid; place-items: center;
  background: var(--bg); border: 1px solid var(--border); border-radius: 6px;
  font-size: 10px; font-weight: 700; letter-spacing: .02em; color: var(--text-2);
}
.lang-native { flex: 1; font-weight: 500; }
.lang-sub { font-size: 11px; color: var(--text-3); }
.lang-check { color: var(--green); font-size: 13px; }

/* ── Layout ── */
.wrap { max-width: var(--maxw); margin: 0 auto; padding: 26px 20px 70px; }
.lead { color: var(--text-2); margin-bottom: 20px; max-width: 64ch; }
.lead b { color: var(--text); font-weight: 600; }

/* ── Mode segmented control ── */
.modebar { display: inline-flex; gap: 3px; padding: 4px; background: var(--panel); border: 1px solid var(--border); border-radius: 999px; margin-bottom: 20px; }
.mode-opt { padding: 8px 20px; border: none; background: none; color: var(--text-2); font: inherit; font-size: 13.5px; font-weight: 600; border-radius: 999px; cursor: pointer; transition: background .15s, color .15s; }
.mode-opt:hover { color: var(--text); }
.mode-opt.active { background: var(--accent); color: var(--bg); }

.card { background: var(--panel); border: 1px solid var(--border); border-radius: var(--r); padding: 18px; margin-bottom: 16px; }
.row { display: flex; gap: 14px; flex-wrap: wrap; align-items: flex-end; }
.row.tight { align-items: stretch; }
.field { display: flex; flex-direction: column; gap: 7px; min-width: 0; }
.field.grow, .grow { flex: 1; min-width: 180px; }
.field.check { flex-direction: row; align-items: center; gap: 9px; align-self: flex-end; height: 42px; }
.field.check input { width: auto; height: auto; }
.label { font-size: 11px; letter-spacing: .04em; text-transform: uppercase; color: var(--text-3); font-weight: 600; }

input, select, textarea {
  background: var(--panel-2); border: 1px solid var(--border); border-radius: var(--r-sm);
  color: var(--text); padding: 0 13px; height: 42px; font: inherit; font-size: 14px; outline: none;
  transition: border-color .15s, background .15s; width: 100%;
}
select { cursor: pointer; }
input:focus, select:focus, textarea:focus { border-color: var(--border-2); background: var(--panel-3); }
input::placeholder { color: var(--text-3); }
textarea { height: auto; padding: 13px; resize: vertical; font-family: ui-monospace, Consolas, monospace; font-size: 12.5px; margin: 10px 0; line-height: 1.5; }

/* ── Preset cards (simple) ── */
.preset-grid { display: grid; grid-template-columns: 1fr; gap: 12px; margin-bottom: 4px; }
@media (min-width: 620px) { .preset-grid { grid-template-columns: 1fr 1fr; } }
.preset-card {
  text-align: start; background: var(--panel); border: 1px solid var(--border); border-radius: var(--r);
  padding: 18px; cursor: pointer; transition: border-color .15s, background .15s, transform .1s;
  display: flex; flex-direction: column; gap: 6px;
}
.preset-card:hover { border-color: var(--border-2); background: var(--panel-2); }
.preset-card.sel { border-color: var(--accent); background: var(--panel-2); }
.preset-card .pc-top { display: flex; align-items: center; gap: 11px; }
.preset-card .pc-icon {
  flex-shrink: 0; width: 34px; height: 34px; display: grid; place-items: center;
  background: var(--panel-3); border-radius: 9px; color: var(--text);
}
.preset-card.sel .pc-icon { background: var(--accent); color: var(--bg); }
.preset-card .pc-name { font-weight: 600; font-size: 15px; flex: 1; }
.preset-card .pc-check { color: var(--green); opacity: 0; transition: opacity .15s; }
.preset-card.sel .pc-check { opacity: 1; }
.preset-card .pc-desc { font-size: 12.5px; color: var(--text-3); line-height: 1.5; }

/* ── Buckets (advanced) ── */
.buckets { display: grid; grid-template-columns: 1fr; gap: 14px; margin-bottom: 16px; }
@media (min-width: 700px) { .buckets { grid-template-columns: repeat(3, 1fr); } }
.bucket { position: relative; background: var(--panel); border: 1px solid var(--border); border-radius: var(--r); padding: 16px; display: flex; flex-direction: column; overflow: hidden; }
.bucket::before { content: ""; position: absolute; inset: 0 0 auto 0; height: 2px; opacity: .85; }
.bucket-proxy::before { background: var(--proxy); }
.bucket-direct::before { background: var(--direct); }
.bucket-block::before { background: var(--block); }
.bucket-head { display: flex; align-items: center; gap: 8px; font-weight: 600; font-size: 14px; }
.bucket-desc { font-size: 12px; color: var(--text-3); margin: 5px 0 12px; min-height: 30px; }
.dot { width: 8px; height: 8px; border-radius: 50%; flex-shrink: 0; }
.dot.proxy { background: var(--proxy); } .dot.direct { background: var(--direct); } .dot.block { background: var(--block); }
.tags { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 12px; min-height: 22px; align-content: flex-start; }
.tag { display: inline-flex; align-items: center; gap: 6px; background: var(--panel-2); border: 1px solid var(--border); border-radius: 7px; padding: 4px 5px 4px 9px; font-size: 12.5px; font-family: ui-monospace, Consolas, monospace; }
.tag button { background: none; border: none; color: var(--text-3); cursor: pointer; font-size: 12px; line-height: 1; padding: 1px 3px; border-radius: 4px; }
.tag button:hover { color: var(--block); background: rgba(255, 90, 77, 0.12); }
.empty-hint { font-size: 12px; color: var(--text-3); font-style: italic; }
.add-row { display: flex; gap: 7px; margin-top: auto; }
.add-input { flex: 1; min-width: 0; height: 38px; font-size: 12.5px; }
.add-btn { flex-shrink: 0; width: 38px; height: 38px; background: var(--accent); color: var(--bg); border: none; border-radius: var(--r-sm); font-size: 19px; font-weight: 600; cursor: pointer; line-height: 1; transition: filter .15s; }
.add-btn:hover { filter: brightness(1.08); }

/* ── Panels ── */
.panel { background: var(--panel); border: 1px solid var(--border); border-radius: var(--r); margin-bottom: 16px; }
.panel summary { cursor: pointer; padding: 15px 18px; font-weight: 600; font-size: 13.5px; color: var(--text-2); list-style: none; user-select: none; }
.panel summary::-webkit-details-marker { display: none; }
.panel summary::before { content: "›"; display: inline-block; margin-inline-end: 9px; transition: transform .2s; color: var(--text-3); }
[dir="rtl"] .panel summary::before { content: "‹"; }
.panel[open] summary::before { transform: rotate(90deg); }
[dir="rtl"] .panel[open] summary::before { transform: rotate(-90deg); }
.panel summary:hover { color: var(--text); }
.panel > *:not(summary) { margin-inline: 18px; }
.panel > *:last-child { margin-bottom: 16px; }
.catalog-grid { display: flex; flex-wrap: wrap; gap: 7px; padding-top: 4px; }
.cat-chip { background: var(--panel-2); border: 1px solid var(--border); color: var(--text-2); border-radius: 7px; padding: 6px 10px; font-size: 12.5px; cursor: pointer; transition: all .15s; }
.cat-chip:hover { border-color: var(--border-2); color: var(--text); background: var(--panel-3); }
.muted { font-size: 12px; color: var(--text-3); padding-top: 10px; }
.muted a { color: var(--text-2); }

/* ── Output ── */
.out-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 12px; }
/* Simple mode: the output is a centered call-to-action (no JSON preview). */
body.mode-simple .output { text-align: center; }
body.mode-simple .output .out-head { justify-content: center; }
body.mode-simple .output .summary { margin-bottom: 2px; }
body.mode-simple .output .actions { justify-content: center; }
.summary { font-size: 14px; color: var(--text-2); line-height: 1.6; margin-bottom: 4px; }
.summary b { color: var(--text); font-weight: 600; }
.preview { background: var(--bg); border: 1px solid var(--border); border-radius: var(--r-sm); padding: 14px; font-family: ui-monospace, Consolas, monospace; font-size: 12.5px; color: var(--text-2); white-space: pre-wrap; word-break: break-word; max-height: 260px; overflow: auto; line-height: 1.5; direction: ltr; text-align: left; }
.actions { display: flex; gap: 9px; flex-wrap: wrap; margin: 16px 0 6px; }

.btn { background: var(--panel-2); border: 1px solid var(--border); color: var(--text); border-radius: var(--r-sm); padding: 0 18px; height: 44px; font: inherit; font-size: 14px; font-weight: 600; cursor: pointer; text-decoration: none; display: inline-flex; align-items: center; justify-content: center; transition: all .15s; white-space: nowrap; }
.btn:hover { border-color: var(--border-2); background: var(--panel-3); }
.btn.primary { background: var(--accent); color: var(--bg); border-color: var(--accent); box-shadow: 0 6px 20px rgba(255, 255, 255, 0.06); }
.btn.primary:hover { filter: brightness(1.08); background: var(--accent); }
.btn.ghost { background: none; height: 34px; padding: 0 12px; font-size: 12.5px; }