/* ── Reset & Base ───────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --navy:   #003366;
  --blue:   #0055aa;
  --orange: #cc6600;
  --bg:     #eeeeee;
  --white:  #ffffff;
  --border: #999999;
  --border-light: #cccccc;
  --text:   #222222;
  --muted:  #666666;
  --star:   #ff9900;
  --red:    #cc0000;
  --green:  #006600;
}

body {
  font-family: "Hiragino Kaku Gothic ProN", "ヒラギノ角ゴ ProN W3",
               "Meiryo", "メイリオ", "MS PGothic", sans-serif;
  font-size: 14px;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}

a { color: #0000cc; }
a:visited { color: #551a8b; }
a:hover { color: var(--orange); text-decoration: underline; }

/* ── Layout ─────────────────────────────────────── */
#wrap { max-width: 960px; margin: 0 auto; padding: 0 8px; }

/* ── Header ─────────────────────────────────────── */
#site-header {
  background: var(--navy);
  border-bottom: 3px solid var(--orange);
  padding: 6px 0;
}
#site-header #wrap { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 4px; }
#site-title { color: #ffffff; font-size: 18px; font-weight: bold; text-decoration: none; }
#site-title:hover { color: #ffcc66; text-decoration: none; }
#site-subtitle { color: #aaccff; font-size: 11px; margin-left: 8px; }

/* ── Nav ────────────────────────────────────────── */
#site-nav {
  background: #224488;
  border-bottom: 1px solid #001133;
}
#site-nav ul { list-style: none; display: flex; flex-wrap: wrap; }
#site-nav ul li a {
  display: block;
  color: #ddeeff;
  padding: 5px 12px;
  text-decoration: none;
  font-size: 13px;
  border-right: 1px solid #335577;
}
#site-nav ul li a:hover,
#site-nav ul li a.active {
  background: #b35500;
  color: #ffffff;
}

/* ── Main content ───────────────────────────────── */
#main-content { padding: 10px 0 20px; }

/* ── Box ────────────────────────────────────────── */
.box {
  background: var(--white);
  border: 1px solid var(--border);
  margin-bottom: 10px;
}
.box-title {
  background: #ddeeff;
  border-bottom: 1px solid var(--border);
  padding: 4px 8px;
  font-weight: bold;
  font-size: 13px;
  color: var(--navy);
}
.box-body { padding: 8px 10px; }

/* ── Section heading ────────────────────────────── */
h1.page-title {
  font-size: 16px;
  border-left: 4px solid var(--orange);
  padding-left: 8px;
  margin-bottom: 10px;
  color: var(--navy);
}
h2.section-title {
  font-size: 14px;
  border-bottom: 2px solid var(--navy);
  padding-bottom: 2px;
  margin: 12px 0 6px;
  color: var(--navy);
}

/* ── Tables ─────────────────────────────────────── */
table.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}
table.data-table th {
  background: #cce0f5;
  border: 1px solid var(--border);
  padding: 4px 8px;
  text-align: left;
  white-space: nowrap;
}
table.data-table td {
  border: 1px solid var(--border-light);
  padding: 4px 8px;
  vertical-align: top;
}
table.data-table tr:nth-child(even) td { background: #f8f8f8; }
table.data-table tr:hover td { background: #fffce8; }

/* ── Stars ──────────────────────────────────────── */
.stars { color: var(--star); font-size: 15px; letter-spacing: 1px; }
.score-num { color: var(--muted); font-size: 12px; margin-left: 3px; }

/* ── Score badge ────────────────────────────────── */
.score-badge {
  display: inline-block;
  background: var(--orange);
  color: #fff;
  font-weight: bold;
  font-size: 13px;
  padding: 1px 6px;
  border-radius: 2px;
  min-width: 32px;
  text-align: center;
}

/* ── Ranking ────────────────────────────────────── */
.ranking-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  margin-bottom: 10px;
}
.ranking-item {
  display: flex;
  align-items: flex-start;
  gap: 6px;
  padding: 6px;
  border: 1px solid var(--border-light);
  background: #fafafa;
  font-size: 13px;
}
.rank-num {
  font-size: 18px;
  font-weight: bold;
  color: var(--navy);
  min-width: 24px;
  text-align: center;
}
.rank-num.gold   { color: #cc9900; }
.rank-num.silver { color: #888888; }
.rank-num.bronze { color: #996633; }
.rank-body { flex: 1; min-width: 0; }
.rank-name { font-weight: bold; word-break: break-all; }
.rank-inst { color: var(--muted); font-size: 12px; }

/* ── Period tabs ────────────────────────────────── */
.period-tabs { display: flex; gap: 0; margin-bottom: 10px; }
.period-tabs a {
  display: block;
  padding: 4px 12px;
  border: 1px solid var(--border);
  text-decoration: none;
  font-size: 13px;
  background: #f0f0f0;
  color: var(--text);
  margin-right: -1px;
}
.period-tabs a.active,
.period-tabs a:hover {
  background: var(--navy);
  color: #fff;
  z-index: 1;
  position: relative;
}

/* ── Forms ──────────────────────────────────────── */
.form-table { width: 100%; border-collapse: collapse; }
.form-table th {
  background: #eef4fb;
  border: 1px solid var(--border-light);
  padding: 6px 10px;
  text-align: left;
  width: 180px;
  vertical-align: top;
  font-weight: normal;
  white-space: nowrap;
}
.form-table td {
  border: 1px solid var(--border-light);
  padding: 5px 8px;
}
.form-table th .required {
  color: var(--red);
  font-size: 11px;
  margin-left: 3px;
}

input[type="text"],
input[type="number"],
input[type="url"],
select,
textarea {
  font-size: 13px;
  font-family: inherit;
  border: 1px solid var(--border);
  padding: 3px 5px;
  background: #fff;
  color: var(--text);
  max-width: 100%;
}
input[type="text"]:focus,
select:focus,
textarea:focus {
  outline: 2px solid var(--blue);
}
textarea { width: 100%; resize: vertical; }

/* ── Star input ─────────────────────────────────── */
.star-input { display: flex; gap: 4px; align-items: center; }
.star-input .star {
  font-size: 24px;
  color: var(--border);
  cursor: pointer;
  line-height: 1;
  user-select: none;
}
.star-input .star.on { color: var(--star); }
.star-input .val-display {
  font-size: 13px;
  color: var(--muted);
  margin-left: 6px;
  min-width: 30px;
}

/* ── Suggest dropdown ───────────────────────────── */
.suggest-wrap { position: relative; display: inline-block; width: 100%; }
.suggest-list {
  position: absolute;
  z-index: 100;
  background: #fff;
  border: 1px solid var(--border);
  width: 100%;
  max-height: 180px;
  overflow-y: auto;
  font-size: 13px;
  display: none;
}
.suggest-list li {
  list-style: none;
  padding: 4px 8px;
  cursor: pointer;
}
.suggest-list li:hover { background: #cce0ff; }

/* ── Buttons ────────────────────────────────────── */
.btn {
  display: inline-block;
  padding: 5px 16px;
  font-size: 13px;
  font-family: inherit;
  font-weight: bold;
  cursor: pointer;
  border: 2px solid #999;
  text-decoration: none;
  background: #e8e8e8;
  color: #222 !important;
  line-height: 1.4;
}
.btn:hover { background: #d0d0d0; border-color: #777; }
.btn-primary {
  background: #b35500;
  color: #fff !important;
  border: 2px solid #7a3a00;
}
.btn-primary:hover { background: #8c4200; border-color: #5a2a00; }
.btn-danger {
  background: #cc0000;
  color: #fff !important;
  border: 2px solid #880000;
}
.btn-danger:hover { background: #aa0000; }
.btn-sm { padding: 2px 8px; font-size: 12px; font-weight: normal; border-width: 1px; }

/* ── Alerts / Messages ──────────────────────────── */
.msg-error {
  background: #ffeeee;
  border: 1px solid #cc0000;
  color: #cc0000;
  padding: 6px 10px;
  margin-bottom: 8px;
  font-size: 13px;
}
.msg-success {
  background: #eeffee;
  border: 1px solid #006600;
  color: #006600;
  padding: 6px 10px;
  margin-bottom: 8px;
  font-size: 13px;
}
.delete-code-box {
  background: #fffbe6;
  border: 2px solid var(--orange);
  padding: 12px 16px;
  text-align: center;
  margin: 16px 0;
}
.delete-code-box .code {
  font-size: 28px;
  font-weight: bold;
  letter-spacing: 6px;
  color: var(--navy);
  font-family: monospace;
}

/* ── Review card ────────────────────────────────── */
.review-card {
  border: 1px solid var(--border-light);
  background: #fafafa;
  margin-bottom: 8px;
  padding: 8px 10px;
  font-size: 13px;
}
.review-card .review-scores {
  display: flex;
  gap: 16px;
  margin-bottom: 4px;
  flex-wrap: wrap;
}
.review-card .score-label { color: var(--muted); font-size: 12px; }
.review-card .review-meta {
  color: var(--muted);
  font-size: 11px;
  margin-top: 6px;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 4px;
}
.review-card .review-body { margin: 6px 0; }
.review-card .review-tags { display: flex; flex-wrap: wrap; gap: 4px; margin: 4px 0; }
.tag {
  display: inline-block;
  background: #ddeeff;
  border: 1px solid #aaccdd;
  color: #003366;
  font-size: 11px;
  padding: 1px 6px;
}

/* ── Badge ──────────────────────────────────────── */
.badge {
  display: inline-block;
  padding: 1px 6px;
  font-size: 11px;
  border: 1px solid var(--border);
}
.badge-譲ります  { background: #dff0d8; border-color: #5cb85c; color: #2d6a2d; }
.badge-欲しいです { background: #d9edf7; border-color: #5bc0de; color: #1a5276; }
.badge-blue   { background: #d9edf7; border-color: #5bc0de; color: #1a5276; }
.badge-orange { background: #fcf8e3; border-color: #f0ad4e; color: #8a6d3b; }

/* ── Footer ─────────────────────────────────────── */
#site-footer {
  background: #222244;
  color: #aaaacc;
  font-size: 11px;
  padding: 10px 0;
  margin-top: 20px;
  border-top: 2px solid var(--navy);
}
#site-footer #wrap { display: flex; flex-wrap: wrap; gap: 8px; justify-content: space-between; align-items: flex-start; }
#site-footer .disclaimer { max-width: 600px; line-height: 1.7; }
#site-footer .footer-nav a { color: #aaaacc; font-size: 12px; margin-right: 8px; }
#site-footer .footer-nav a:hover { color: #ffffff; }
.affiliate-notice { font-size: 11px; margin-top: 4px; }

/* ── 非公式バナー ────────────────────────────────── */
#unofficial-notice {
  background: #fff3cd;
  border-bottom: 1px solid #ffc107;
  color: #856404;
  font-size: 12px;
  text-align: center;
  padding: 5px 10px;
}

/* ── 電車ウィジェット 駅グリッド ─────────────────── */
.train-station-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  margin-bottom: 10px;
}
.train-widget { min-height: 80px; }

/* ── ランキング件数 ──────────────────────────────── */
.rank-cnt { font-size: 11px; color: var(--muted); }

/* ── 掲示板アンカー ─────────────────────────────── */
.bbs-anchor { color: #0000cc; font-weight: bold; text-decoration: none; }
.bbs-anchor:hover { text-decoration: underline; color: var(--orange); }

/* ── アクティビティバー ──────────────────────────── */
.activity-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 12px;
}
.activity-item {
  display: flex;
  align-items: center;
  gap: 6px;
  background: #fff;
  border: 1px solid #dde3ec;
  border-radius: 20px;
  padding: 6px 14px;
  font-size: 13px;
  white-space: nowrap;
}
.activity-link {
  text-decoration: none;
  color: inherit;
  transition: background 0.15s, border-color 0.15s;
}
.activity-link:hover { background: #f0f4ff; border-color: #aac; }
.activity-online { border-color: #4caf50; background: #f1faf2; }
.activity-hot    { border-color: #ff7043; background: #fff4f0; }
.activity-cta    { border-color: var(--orange); background: #fff8f0; }
.activity-icon   { font-size: 16px; }
.activity-body   { display: flex; align-items: baseline; gap: 3px; }
.activity-num    { font-size: 18px; font-weight: bold; color: #003366; line-height: 1; }
.activity-label  { font-size: 12px; color: #555; }
.activity-thread {
  font-size: 12px; font-weight: bold; color: #c0392b;
  max-width: 160px; overflow: hidden; white-space: nowrap; text-overflow: ellipsis;
  display: inline-block; vertical-align: bottom;
}
.activity-cnt { font-size: 11px; color: #ff7043; margin-left: 2px; }

@media (max-width: 640px) {
  .activity-bar { gap: 6px; }
  .activity-item { padding: 5px 10px; }
  .activity-num  { font-size: 15px; }
  .activity-thread { max-width: 110px; }
}

/* ── 教科書交換バナー ────────────────────────────── */
.exchange-wanted-banner {
  display: flex;
  align-items: center;
  gap: 10px;
  background: linear-gradient(135deg, #fff8e1 0%, #fff3cd 100%);
  border: 2px solid #f5a623;
  border-radius: 8px;
  padding: 12px 16px;
  margin-bottom: 12px;
  text-decoration: none;
  color: inherit;
  transition: box-shadow 0.15s, border-color 0.15s;
}
.exchange-wanted-banner:hover {
  box-shadow: 0 3px 10px rgba(245,166,35,.3);
  border-color: #e08e00;
}
.exchange-wanted-icon { font-size: 28px; flex-shrink: 0; }
.exchange-wanted-text { font-size: 15px; font-weight: bold; color: #7a4f00; }
.exchange-wanted-sub  { font-size: 12px; font-weight: normal; color: #9a6800; margin-left: 4px; }

@media (max-width: 640px) {
  .exchange-wanted-text { font-size: 13px; }
  .exchange-wanted-sub  { display: block; margin-left: 0; margin-top: 2px; }
}

/* ── 最新口コミ カード（モバイル用） ────────────────── */
.latest-cards { display: none; }

.latest-card {
  display: block;
  text-decoration: none;
  color: inherit;
  padding: 10px 8px;
  border-bottom: 1px solid var(--border);
}
.latest-card:last-child { border-bottom: none; }
.latest-card:hover { background: #f7f9ff; }

.latest-card-top {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 6px;
}
.latest-card-name {
  font-weight: bold;
  font-size: 13px;
  color: var(--blue);
  flex: 1;
  min-width: 0;
  overflow: hidden;
  white-space: nowrap;
  text-overflow: ellipsis;
}
.latest-card-date { font-size: 11px; color: var(--muted); white-space: nowrap; }
.latest-card-instructor { font-size: 11px; color: var(--muted); margin-top: 2px; }
.latest-card-scores {
  display: flex;
  gap: 12px;
  margin-top: 4px;
  font-size: 12px;
}
.latest-card-comment {
  margin-top: 4px;
  font-size: 12px;
  color: #444;
  overflow: hidden;
  white-space: nowrap;
  text-overflow: ellipsis;
}

/* ── Responsive ─────────────────────────────────── */
@media (max-width: 640px) {
  #site-header #wrap { flex-direction: column; align-items: flex-start; }
  .ranking-grid { grid-template-columns: 1fr; }
  .form-table th { width: 110px; font-size: 12px; }
  table.data-table { font-size: 12px; }
  table.data-table th, table.data-table td { padding: 3px 5px; }
  .review-card .review-scores { flex-direction: column; gap: 4px; }
  #site-footer #wrap { flex-direction: column; }
  .delete-code-box .code { font-size: 22px; letter-spacing: 4px; }
  .train-station-grid { grid-template-columns: 1fr; }

  .latest-table { display: none; }
  .latest-cards { display: block; }
}