:root {
  --green: #2e7d32;
  --green-dark: #1b5e20;
  --green-pale: #e8f5e9;
  --red: #c62828;
  --red-pale: #ffebee;
  --amber: #b26a00;
  --amber-pale: #fff8e1;
  --border: #d7dbd8;
  --bg: #f4f6f4;
  --card: #ffffff;
  --text: #21302a;
  --muted: #6b7a72;
  --radius: 10px;
  --shadow: 0 1px 3px rgba(20, 40, 30, 0.08);
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: "Hiragino Kaku Gothic ProN", "Hiragino Sans", "Noto Sans JP", "Yu Gothic UI", Meiryo, sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 15px;
  line-height: 1.5;
}

/* ---------- header ---------- */
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  padding: 12px 20px;
  background: var(--green-dark);
  color: #fff;
  position: sticky;
  top: 0;
  z-index: 50;
}
.topbar h1 { font-size: 19px; margin: 0; font-weight: 700; }
.topbar-actions { display: flex; gap: 8px; align-items: center; }

/* ---------- buttons ---------- */
.btn {
  border: 1px solid var(--border);
  background: #fff;
  color: var(--text);
  border-radius: 8px;
  padding: 7px 14px;
  font-size: 14px;
  cursor: pointer;
  transition: filter .12s, background .12s;
}
.btn:hover { filter: brightness(0.96); }
.btn.primary { background: var(--green); border-color: var(--green); color: #fff; }
.btn.primary:hover { background: var(--green-dark); }
.btn.ghost { background: transparent; border-style: dashed; }
.topbar .btn.ghost { color: #dfeee2; border-color: rgba(255,255,255,.4); }
.btn.big { font-size: 17px; padding: 12px 20px; width: 100%; font-weight: 700; }
.btn.danger-text { color: var(--red); }
.btn:disabled { opacity: .55; cursor: default; }

/* ---------- dropdown ---------- */
.dropdown { position: relative; }
.dropdown-menu {
  position: absolute;
  right: 0;
  top: calc(100% + 6px);
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: 0 6px 20px rgba(0,0,0,.15);
  min-width: 300px;
  z-index: 100;
  overflow: hidden;
}
.dropdown-menu button {
  display: block;
  width: 100%;
  text-align: left;
  border: 0;
  background: #fff;
  padding: 11px 14px;
  font-size: 14px;
  cursor: pointer;
  color: var(--text);
}
.dropdown-menu button:hover { background: var(--green-pale); }
.dropdown-menu button + button { border-top: 1px solid #eef1ee; }

/* ---------- layout ---------- */
main { max-width: 1180px; margin: 0 auto; padding: 18px 20px 60px; }
.columns { display: grid; grid-template-columns: 5fr 7fr; gap: 18px; align-items: start; }
@media (max-width: 900px) { .columns { grid-template-columns: 1fr; } }

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 16px 18px;
  margin-bottom: 18px;
}
.card-head { display: flex; align-items: center; justify-content: space-between; gap: 10px; flex-wrap: wrap; }
.card h2 { font-size: 17px; margin: 0 0 4px; }
.hint { color: var(--muted); font-size: 12.5px; margin: 4px 0 10px; }

/* ---------- banners ---------- */
.banner {
  padding: 10px 14px;
  border-radius: 8px;
  margin-bottom: 12px;
  font-size: 14px;
  border: 1px solid transparent;
  white-space: pre-wrap;
}
.banner.success { background: var(--green-pale); border-color: #a5d6a7; color: var(--green-dark); }
.banner.error { background: var(--red-pale); border-color: #ef9a9a; color: var(--red); }
.banner.warn { background: var(--amber-pale); border-color: #ffe082; color: var(--amber); }

.info-bar {
  font-size: 13px;
  padding: 8px 12px;
  border-radius: 8px;
  background: var(--green-pale);
  color: var(--green-dark);
  margin-bottom: 10px;
}
.info-bar.error { background: var(--red-pale); color: var(--red); }
.info-bar:empty { display: none; }

/* ---------- players table ---------- */
.table-wrap { overflow-x: auto; }
#players-table { width: 100%; border-collapse: collapse; }
#players-table th {
  text-align: left;
  font-size: 12px;
  color: var(--muted);
  font-weight: 600;
  padding: 4px 6px;
  border-bottom: 2px solid var(--border);
}
#players-table td { padding: 2px 3px; border-bottom: 1px solid #eef1ee; }
#players-table .col-no { width: 34px; }
#players-table .col-score { width: 90px; }
#players-table .col-del { width: 36px; }
#players-table td.no { color: var(--muted); font-size: 12px; text-align: right; padding-right: 8px; }
#players-table input {
  width: 100%;
  border: 1px solid transparent;
  border-radius: 6px;
  padding: 7px 8px;
  font-size: 14.5px;
  background: transparent;
  font-family: inherit;
}
#players-table input:hover { background: #f7f9f7; }
#players-table input:focus { outline: none; border-color: var(--green); background: #fff; box-shadow: 0 0 0 2px rgba(46,125,50,.15); }
#players-table tr.dup input.name { background: var(--red-pale); border-color: #ef9a9a; }
#players-table input.score.invalid { background: var(--amber-pale); border-color: #ffca28; }
.del-btn {
  border: 0; background: transparent; color: #b0b8b2;
  font-size: 16px; cursor: pointer; padding: 4px 8px; border-radius: 6px;
}
.del-btn:hover { color: var(--red); background: var(--red-pale); }
.row-actions { display: flex; justify-content: space-between; margin-top: 10px; }

/* ---------- constraint sections ---------- */
.constraint-section { margin-bottom: 18px; }
.constraint-section h3 { font-size: 14.5px; margin: 0 0 2px; display: flex; align-items: center; gap: 8px; }
.badge { font-size: 11px; padding: 2px 8px; border-radius: 999px; font-weight: 700; }
.badge.hard { background: var(--red-pale); color: var(--red); }
.badge.soft { background: #e3f2fd; color: #1565c0; }
.constraint-section .hint { margin: 2px 0 8px; }

.chip-row {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-bottom: 6px;
}
.chips {
  flex: 1;
  display: flex;
  flex-wrap: wrap;
  gap: 5px;
  align-items: center;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 5px 8px;
  background: #fff;
  position: relative;
  cursor: text;
  min-height: 40px;
}
.chips:focus-within { border-color: var(--green); box-shadow: 0 0 0 2px rgba(46,125,50,.15); }
.chip {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  background: var(--green-pale);
  color: var(--green-dark);
  border: 1px solid #bcd9be;
  border-radius: 999px;
  padding: 3px 6px 3px 11px;
  font-size: 13.5px;
  white-space: nowrap;
}
.chip.unknown { background: var(--amber-pale); color: var(--amber); border-color: #ffd54f; }
.chip .x {
  border: 0; background: transparent; cursor: pointer;
  color: inherit; font-size: 13px; line-height: 1;
  border-radius: 50%; width: 18px; height: 18px; padding: 0;
}
.chip .x:hover { background: rgba(0,0,0,.1); }
.chip-input {
  border: 0; outline: none; flex: 1; min-width: 90px;
  font-size: 14px; padding: 4px 2px; font-family: inherit; background: transparent;
}
.suggest {
  position: absolute;
  left: 6px; top: calc(100% + 4px);
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 8px;
  box-shadow: 0 6px 20px rgba(0,0,0,.15);
  z-index: 60;
  min-width: 180px;
  max-height: 220px;
  overflow-y: auto;
}
.suggest div { padding: 7px 14px; cursor: pointer; font-size: 14px; }
.suggest div.active, .suggest div:hover { background: var(--green-pale); }

/* ---------- run card ---------- */
.run-card { display: flex; flex-direction: column; gap: 12px; }
.run-settings { display: flex; align-items: center; gap: 16px; flex-wrap: wrap; }
.checkbox-label { display: inline-flex; align-items: center; gap: 6px; font-weight: 600; cursor: pointer; }
.checkbox-label input { width: 17px; height: 17px; accent-color: var(--green); }
.seed-label { display: inline-flex; align-items: center; gap: 8px; font-size: 14px; }
.seed-label input {
  width: 130px; padding: 7px 9px; border: 1px solid var(--border);
  border-radius: 8px; font-size: 14px;
}
.seed-label input:disabled { background: #f1f3f1; color: #9aa59e; }
.run-settings .hint { margin: 0; }

/* ---------- results ---------- */
.groups-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(215px, 1fr));
  gap: 12px;
  margin-top: 10px;
}
.group-card {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  background: #fff;
}
.group-card .g-head {
  background: var(--green);
  color: #fff;
  font-weight: 700;
  padding: 7px 12px;
  font-size: 14px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.group-card .g-head .ng-badge {
  background: #fff; color: var(--red);
  border-radius: 999px; font-size: 11px; padding: 1px 8px;
}
.group-card ul { list-style: none; margin: 0; padding: 6px 0; }
.group-card li {
  display: flex; justify-content: space-between;
  padding: 5px 14px; font-size: 14.5px;
}
.group-card li + li { border-top: 1px dashed #eef1ee; }
.group-card li .sc { color: var(--muted); font-variant-numeric: tabular-nums; }
.group-card .g-foot {
  border-top: 1px solid var(--border);
  background: #fafcfa;
  padding: 6px 14px;
  font-size: 12.5px;
  color: var(--muted);
  display: flex;
  justify-content: space-between;
}
.result-actions { display: flex; gap: 8px; }

/* ---------- drop overlay ---------- */
#drop-overlay {
  position: fixed; inset: 0; z-index: 200;
  background: rgba(27, 94, 32, .55);
  display: flex; align-items: center; justify-content: center;
}
#drop-overlay[hidden] { display: none; }
.drop-box {
  background: #fff;
  border: 3px dashed var(--green);
  border-radius: 16px;
  padding: 40px 60px;
  font-size: 21px;
  font-weight: 700;
  color: var(--green-dark);
  text-align: center;
}
.drop-box span { font-size: 14px; font-weight: 400; color: var(--muted); }

@media (max-width: 640px) {
  main { padding: 12px 10px 50px; }
  .card { padding: 12px; }
  .topbar { padding: 10px 12px; }
}