:root {
  --bg: #0e1117;
  --panel: #161b22;
  --panel-2: #1c232d;
  --border: #2a313c;
  --text: #e6edf3;
  --muted: #93a1b1;
  --accent: #3b82f6;
  --accent-2: #22c55e;
  --claude: #d97757;
  --radius: 12px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.55 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

.wrap { width: min(1100px, 92vw); margin: 0 auto; }

.site-header {
  border-bottom: 1px solid var(--border);
  background: linear-gradient(180deg, #11161d, #0e1117);
}
.site-header .wrap { display: flex; align-items: baseline; gap: 14px; padding: 16px 0; }
.brand { font-weight: 700; font-size: 20px; }
.tagline { color: var(--muted); font-size: 14px; }
.header-btn { margin-left: auto; align-self: center; }

.hero { padding: 44px 0 12px; text-align: center; }
.hero h1 { font-size: clamp(26px, 4vw, 40px); margin: 0 0 12px; }
.hero .sub { color: var(--muted); max-width: 640px; margin: 0 auto 26px; }

.search-bar {
  display: flex; flex-wrap: wrap; gap: 8px; justify-content: center;
  background: var(--panel); padding: 10px; border: 1px solid var(--border);
  border-radius: var(--radius); max-width: 820px; margin: 0 auto;
}
.search-bar input[type="text"] {
  flex: 1 1 280px; min-width: 220px;
  background: var(--panel-2); border: 1px solid var(--border); color: var(--text);
  padding: 12px 14px; border-radius: 8px; font-size: 16px;
}
.search-bar select {
  background: var(--panel-2); border: 1px solid var(--border); color: var(--text);
  padding: 12px 10px; border-radius: 8px; font-size: 14px;
}
.search-bar button {
  background: var(--accent); color: white; border: 0; padding: 12px 22px;
  border-radius: 8px; font-size: 16px; font-weight: 600; cursor: pointer;
}
.search-bar button:hover { filter: brightness(1.08); }
.hint { color: var(--muted); font-size: 13px; margin-top: 12px; text-align: center; }

.status {
  margin: 24px auto; padding: 16px; border-radius: var(--radius);
  background: var(--panel); border: 1px solid var(--border); text-align: center;
}
.status.error { border-color: #7f1d1d; background: #1f1416; color: #fca5a5; }
.spinner {
  display: inline-block; width: 18px; height: 18px; vertical-align: -3px;
  border: 2px solid var(--border); border-top-color: var(--accent);
  border-radius: 50%; animation: spin 0.8s linear infinite; margin-right: 8px;
}
@keyframes spin { to { transform: rotate(360deg); } }

.toolbar {
  display: flex; flex-wrap: wrap; gap: 12px; align-items: center; justify-content: space-between;
  margin: 28px 0 16px; padding: 12px 14px;
  background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius);
  position: sticky; top: 8px; z-index: 5;
}
.toolbar .meta { color: var(--muted); }
.toolbar .chip {
  background: var(--panel-2); border: 1px solid var(--border);
  padding: 2px 10px; border-radius: 999px; color: var(--text); font-weight: 600;
}
.cached { color: var(--accent-2); font-size: 13px; }
.actions { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }
.selected-count { color: var(--muted); font-size: 13px; margin-right: 4px; }

.btn {
  background: var(--panel-2); color: var(--text); border: 1px solid var(--border);
  padding: 9px 14px; border-radius: 8px; font-size: 14px; cursor: pointer;
}
.btn:hover { border-color: var(--accent); }
.btn.ghost { background: transparent; }
.btn.claude { background: var(--claude); border-color: var(--claude); color: #fff; font-weight: 600; }
.btn.claude:hover { filter: brightness(1.08); }

.views {
  display: flex; gap: 6px; margin: 4px 0 18px; border-bottom: 1px solid var(--border);
}
.view-tab {
  background: transparent; border: 0; color: var(--muted); cursor: pointer;
  padding: 10px 16px; font-size: 15px; border-bottom: 2px solid transparent; margin-bottom: -1px;
}
.view-tab:hover { color: var(--text); }
.view-tab.active { color: var(--text); border-bottom-color: var(--accent); font-weight: 600; }

.results {
  display: grid; gap: 16px;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
}

/* STAG / ad groups */
.stag-controls {
  display: flex; flex-wrap: wrap; gap: 18px; align-items: flex-end;
  background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 14px; margin-bottom: 16px;
}
.field.inline { margin: 0; }
.field.inline input { width: 260px; }
.match-types { display: flex; gap: 12px; align-items: center; color: var(--muted); font-size: 14px; }
.match-types label { color: var(--text); display: flex; gap: 5px; align-items: center; }
.match-types input { accent-color: var(--accent); }
#adgroups-list { display: grid; gap: 16px; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); }
.adgroup { background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; }
.adgroup h3 {
  margin: 0; padding: 12px 14px; font-size: 15px; background: var(--panel-2);
  border-bottom: 1px solid var(--border); display: flex; justify-content: space-between; align-items: center;
}
.adgroup h3 .btn.claude { padding: 5px 10px; font-size: 12px; }
.adgroup .headlines { padding: 10px 14px; border-bottom: 1px dashed var(--border); font-size: 13px; color: var(--muted); }
.adgroup .headlines code { color: var(--text); background: var(--panel-2); padding: 1px 6px; border-radius: 4px; margin: 2px 4px 2px 0; display: inline-block; }
.adgroup .headlines code.over { color: #fca5a5; }
.adgroup ul { list-style: none; margin: 0; padding: 8px 14px; max-height: 260px; overflow: auto; }
.adgroup li { padding: 4px 0; font-size: 14px; }
.card {
  background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius);
  overflow: hidden; display: flex; flex-direction: column;
}
.card h3 {
  margin: 0; padding: 12px 14px; font-size: 14px; letter-spacing: .02em;
  background: var(--panel-2); border-bottom: 1px solid var(--border);
  display: flex; justify-content: space-between; align-items: center;
}
.card h3 .count { color: var(--muted); font-weight: 500; font-size: 12px; }
.card ul { list-style: none; margin: 0; padding: 6px; max-height: 380px; overflow: auto; }
.card li { margin: 0; }
.card label {
  display: flex; gap: 8px; align-items: flex-start; padding: 7px 8px;
  border-radius: 6px; cursor: pointer; font-size: 14px;
}
.card label:hover { background: var(--panel-2); }
.card input[type="checkbox"] { margin-top: 3px; accent-color: var(--accent); }
.empty { color: var(--muted); padding: 14px; font-size: 13px; }

dialog {
  background: var(--panel); color: var(--text);
  border: 1px solid var(--border); border-radius: var(--radius);
  width: min(640px, 92vw); padding: 0;
}
dialog::backdrop { background: rgba(0,0,0,0.6); }
dialog form { padding: 22px; }
dialog h2 { margin: 0 0 6px; }
.dialog-sub { color: var(--muted); margin: 0 0 16px; }
.field { display: block; margin-bottom: 12px; }
.field span { display: block; font-size: 13px; color: var(--muted); margin-bottom: 4px; }
.field input {
  width: 100%; background: var(--panel-2); border: 1px solid var(--border);
  color: var(--text); padding: 10px 12px; border-radius: 8px; font-size: 15px;
}
#claude-preview {
  width: 100%; background: var(--panel-2); border: 1px solid var(--border);
  color: var(--text); padding: 12px; border-radius: 8px; font: 13px/1.5 ui-monospace, Menlo, Consolas, monospace;
  resize: vertical;
}
.dialog-actions { display: flex; gap: 8px; justify-content: flex-end; margin: 14px 0 10px; }
.dialog-note { color: var(--muted); font-size: 12px; margin: 0; }

.site-footer { border-top: 1px solid var(--border); margin-top: 48px; }
.site-footer .wrap { padding: 22px 0; color: var(--muted); font-size: 13px; text-align: center; }

@media (max-width: 560px) {
  .toolbar { position: static; }
}

/* ---- Light / dark theming ---- */
.header-actions { margin-left: auto; align-self: center; display: flex; gap: 8px; flex-wrap: wrap; }
#theme-btn { min-width: 92px; }

:root[data-theme="light"] {
  --bg: #f6f7f9;
  --panel: #ffffff;
  --panel-2: #eef1f5;
  --border: #d7dde5;
  --text: #1a2027;
  --muted: #55606c;
  --accent: #2563eb;
  --accent-2: #15a34a;
  --claude: #c2410c;
}
:root[data-theme="light"] .site-header { background: linear-gradient(180deg, #ffffff, #f6f7f9); }
:root[data-theme="light"] .status.error { border-color: #fecaca; background: #fff1f2; color: #b91c1c; }
:root[data-theme="light"] .adgroup .headlines code.over { color: #b91c1c; }
:root[data-theme="light"] dialog::backdrop { background: rgba(0,0,0,0.35); }

/* ---- Phase 1: workflow, hints, ad writer, coverage ---- */
.workflow { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; justify-content: center; margin: 22px 0 6px; font-size: 14px; }
.workflow .step { background: var(--panel); border: 1px solid var(--border); border-radius: 999px; padding: 6px 14px; color: var(--muted); }
.workflow .step b { display: inline-block; margin-right: 6px; color: #fff; background: var(--accent); border-radius: 50%; width: 18px; height: 18px; text-align: center; font-size: 12px; line-height: 18px; }
.workflow .arrow { color: var(--muted); }
.view-hint { color: var(--muted); font-size: 13.5px; margin: 2px 0 16px; }

.card-foot { padding: 8px 10px; border-top: 1px solid var(--border); }
.btn.claude.sm { width: 100%; padding: 6px 10px; font-size: 12.5px; }

.adwriter { display: flex; flex-wrap: wrap; gap: 14px; align-items: flex-end; background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius); padding: 14px; margin-bottom: 16px; }
.adwriter .field.inline input { width: 280px; }

.cov-top { background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius); padding: 16px; margin-bottom: 16px; }
.cov-lead { color: var(--muted); margin: 0 0 12px; }
#coverage-input { width: 100%; min-height: 150px; background: var(--panel-2); border: 1px solid var(--border); color: var(--text); border-radius: 8px; padding: 12px; font: 14px/1.5 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif; resize: vertical; }
#coverage-run { margin-top: 10px; background: var(--accent); color: #fff; border-color: var(--accent); font-weight: 600; }

.cov-scoreboard { display: flex; gap: 18px; align-items: center; flex-wrap: wrap; background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius); padding: 18px; margin-bottom: 16px; }
.cov-score { text-align: center; padding: 14px 22px; border-radius: 12px; background: var(--panel-2); }
.cov-score .n { font-size: 38px; font-weight: 800; line-height: 1; }
.cov-score .l { color: var(--muted); font-size: 12px; margin-top: 4px; }
.cov-score.good .n { color: var(--accent-2); }
.cov-score.mid  .n { color: #f59e0b; }
.cov-score.low  .n { color: #ef4444; }
.cov-stats { display: flex; gap: 20px; flex-wrap: wrap; font-size: 14px; color: var(--muted); }
.cov-stats b { font-size: 20px; display: block; }
.cov-stats b.ok { color: var(--accent-2); }
.cov-stats b.part { color: #f59e0b; }
.cov-stats b.miss { color: #ef4444; }
.cov-of { align-self: center; }

.cov-chips { display: flex; flex-wrap: wrap; gap: 6px; }
.kwchip { font-size: 12.5px; padding: 3px 9px; border-radius: 999px; border: 1px solid var(--border); }
.kwchip.ok   { background: rgba(34,197,94,.14);  border-color: rgba(34,197,94,.40); color: var(--accent-2); }
.kwchip.part { background: rgba(245,158,11,.14); border-color: rgba(245,158,11,.40); color: #d97706; }
.kwchip.miss { background: rgba(239,68,68,.12);  border-color: rgba(239,68,68,.35); color: #ef4444; }

.cov-gaps { background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius); padding: 16px; margin-bottom: 16px; }
.cov-gaps-h { font-weight: 600; margin-bottom: 10px; }
#cov-fix { margin-top: 12px; }
.cov-allgood { background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius); padding: 16px; margin-bottom: 16px; color: var(--accent-2); }
.cov-h { margin: 8px 0 12px; }
.cov-cluster { background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius); padding: 12px 14px; margin-bottom: 10px; }
.cov-cluster-h { display: flex; justify-content: space-between; font-weight: 600; margin-bottom: 8px; }
.cov-pct { color: var(--muted); }

/* Phase 2: 4th tier, legend, action bar, target group */
.kwchip.intent { background: rgba(249,115,22,.14); border-color: rgba(249,115,22,.40); color: #ea580c; }
.cov-stats b.intent { color: #ea580c; }
.cov-legend { display: flex; flex-wrap: wrap; gap: 16px; font-size: 13px; color: var(--muted); margin-bottom: 12px; }
.cov-legend .sw { display: inline-block; width: 12px; height: 12px; border-radius: 3px; margin-right: 5px; vertical-align: -1px; }
.cov-legend .sw.ok { background: rgba(34,197,94,.65); }
.cov-legend .sw.part { background: rgba(245,158,11,.75); }
.cov-legend .sw.intent { background: rgba(249,115,22,.75); }
.cov-legend .sw.miss { background: rgba(239,68,68,.65); }
.cov-actions { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; margin-bottom: 16px; }
.cov-actions-h { color: var(--muted); font-size: 13px; margin-right: 2px; }
.cov-cluster.target { border-color: var(--accent); box-shadow: 0 0 0 1px var(--accent) inset; }
.tgt-badge { font-size: 11px; font-weight: 600; color: #fff; background: var(--accent); border-radius: 999px; padding: 2px 8px; margin-left: 8px; }
.cov-target-field { display: block; margin-bottom: 12px; }
#cov-target { max-width: 360px; background: var(--panel-2); border: 1px solid var(--border); color: var(--text); padding: 9px 11px; border-radius: 8px; font-size: 14px; }