:root {
  --bg: #0d1117;
  --panel: #161b22;
  --panel2: #1c2330;
  --border: #2a3342;
  --text: #e8edf3;
  --muted: #9aa7b8;
  --accent: #22c55e;
  --accent-dim: #14532d;
  --warn: #f59e0b;
  --bad: #ef4444;
  --good: #22c55e;
  --radius: 12px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.topbar {
  background: var(--panel);
  border-bottom: 1px solid var(--border);
  padding: 12px 16px;
  position: sticky;
  top: 0;
  z-index: 10;
}

.brand { display: flex; align-items: center; gap: 12px; margin-bottom: 10px; }
.brand-mark {
  width: 40px; height: 40px; border-radius: 10px;
  background: linear-gradient(135deg, #22c55e, #0ea5e9);
  display: flex; align-items: center; justify-content: center;
  font-weight: 800; color: #04120a; font-size: 16px;
}
.brand h1 { font-size: 18px; margin: 0; }
.subtitle { margin: 2px 0 0; color: var(--muted); font-size: 12px; }

.tabs { display: flex; gap: 8px; }
.tab {
  flex: 1;
  background: var(--panel2);
  color: var(--muted);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 10px 8px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
}
.tab.active { background: var(--accent-dim); color: #fff; border-color: var(--accent); }
.count {
  background: var(--border); border-radius: 999px;
  font-size: 11px; padding: 1px 7px; margin-left: 4px;
}

main { flex: 1; padding: 16px; max-width: 720px; width: 100%; margin: 0 auto; }
.panel { display: none; }
.panel.active { display: block; }

.field-label { font-weight: 700; font-size: 14px; display: block; margin-bottom: 8px; }
textarea {
  width: 100%;
  background: var(--panel2);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 12px;
  font-size: 16px;
  resize: vertical;
  min-height: 64px;
}
textarea:focus { outline: none; border-color: var(--accent); }
.char-row { text-align: right; color: var(--muted); font-size: 12px; margin: 6px 0 12px; }

.score-card {
  display: flex; align-items: center; gap: 16px;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  margin-bottom: 12px;
}
.score-ring {
  width: 84px; height: 84px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 26px; font-weight: 800; flex-shrink: 0;
  border: 6px solid var(--border);
  background: var(--panel2);
}
.score-ring.good { border-color: var(--good); color: var(--good); }
.score-ring.ok { border-color: var(--warn); color: var(--warn); }
.score-ring.bad { border-color: var(--bad); color: var(--bad); }
.verdict { font-weight: 700; font-size: 16px; margin-bottom: 4px; }
.len { color: var(--muted); font-size: 13px; }

.checks {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 8px 16px;
  margin-bottom: 12px;
}
.check {
  display: flex; gap: 10px; align-items: flex-start;
  padding: 9px 0; border-bottom: 1px solid var(--border);
  font-size: 14px; line-height: 1.45;
}
.check:last-child { border-bottom: none; }
.check .ic { flex-shrink: 0; width: 22px; text-align: center; font-weight: 800; }
.check.pos .ic { color: var(--good); }
.check.neg .ic { color: var(--bad); }
.check.tip .ic { color: var(--warn); }
.check .metric { margin-left: auto; color: var(--muted); font-size: 12px; white-space: nowrap; padding-left: 8px; }

.actions { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 12px; }
.btn {
  background: var(--panel2); color: var(--text);
  border: 1px solid var(--border); border-radius: 10px;
  padding: 12px 18px; font-size: 15px; font-weight: 700; cursor: pointer;
}
.btn.primary { background: var(--accent); border-color: var(--accent); color: #04120a; }
.btn.danger { background: transparent; color: var(--bad); border-color: var(--bad); font-size: 13px; padding: 8px 14px; }
.btn:active { transform: scale(0.97); }

.ideas { display: flex; flex-direction: column; gap: 10px; margin-bottom: 12px; }
.idea {
  background: var(--panel); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 12px 14px;
}
.idea-top { display: flex; align-items: center; justify-content: space-between; gap: 10px; margin-bottom: 6px; }
.idea-score { font-weight: 800; font-size: 14px; }
.idea-score.good { color: var(--good); }
.idea-score.ok { color: var(--warn); }
.idea-score.bad { color: var(--bad); }
.idea-text { font-size: 15px; margin: 0 0 8px; line-height: 1.4; }
.idea-btns { display: flex; gap: 8px; }
.mini-btn {
  background: var(--panel2); color: var(--text);
  border: 1px solid var(--border); border-radius: 8px;
  padding: 7px 12px; font-size: 13px; font-weight: 700; cursor: pointer;
}
.mini-btn.use { background: var(--accent-dim); border-color: var(--accent); color: #fff; }

.dropzone {
  border: 2px dashed var(--border);
  border-radius: var(--radius);
  background: var(--panel);
  padding: 32px 16px;
  text-align: center;
  cursor: pointer;
  margin-bottom: 12px;
  transition: border-color 0.15s;
}
.dropzone.over { border-color: var(--accent); background: var(--panel2); }
.dz-icon { font-size: 32px; color: var(--muted); }
.dz-inner p { margin: 8px 0; }
.dz-hint { color: var(--muted); font-size: 13px; }
.preview { width: 100%; border-radius: 8px; display: block; }
.dropzone.has-img .dz-inner { display: none; }

.hidden { display: none !important; }

.hist-head { display: flex; align-items: center; justify-content: space-between; gap: 10px; margin-bottom: 12px; }
.hist-head p { color: var(--muted); font-size: 13px; margin: 0; }
.hist-list { display: flex; flex-direction: column; gap: 10px; }
.hist-item {
  background: var(--panel); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 12px 14px;
}
.hist-top { display: flex; align-items: center; justify-content: space-between; gap: 8px; }
.hist-type { font-size: 11px; font-weight: 800; text-transform: uppercase; letter-spacing: 0.5px; color: var(--muted); }
.hist-score { font-weight: 800; font-size: 16px; }
.hist-score.good { color: var(--good); }
.hist-score.ok { color: var(--warn); }
.hist-score.bad { color: var(--bad); }
.hist-text { font-size: 14px; margin: 8px 0 4px; line-height: 1.4; word-break: break-word; }
.hist-date { color: var(--muted); font-size: 12px; }
.hist-del { background: none; border: none; color: var(--muted); font-size: 18px; cursor: pointer; padding: 4px; }
.hist-empty { color: var(--muted); text-align: center; padding: 32px 0; }

footer { padding: 16px; text-align: center; color: var(--muted); font-size: 12px; max-width: 720px; margin: 0 auto; }

@media (max-width: 480px) {
  main { padding: 12px; }
  .score-ring { width: 72px; height: 72px; font-size: 22px; }
  .tab { font-size: 14px; }
}