body {
  font-family: 'Segoe UI', sans-serif;
  background-color: #f8f9fa;
  margin: 0.5rem;
  color: #333;
}

h1 {
  color: #1b5e20;
  margin-bottom: 1rem;
}

table {
  width: 100%;
  border-collapse: collapse;
  background-color: #fff;
  box-shadow: 0 2px 8px rgba(0,0,0,0.05);
}

th, td {
  padding: 4px 8px;
  text-align: center;
  border-bottom: 1px solid #ddd;
  line-height: 1.2;
  vertical-align: middle;
}

th {
  background-color: #1b5e20;
  color: #fff;
  vertical-align: bottom;
  padding: 0;
  text-align: center;
  vertical-align: middle;
}

th a {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100%;
  width: 100%;
  color: #fff;
  text-decoration: none;
  line-height: 40px;
}

a {
  display: inline-block;
  margin-top: 1rem;
  color: #009688;
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

form p {
  margin-bottom: 1rem;
}

input[type="submit"] {
  padding: 0.5rem 1rem;
  background-color: #1b5e20;
  color: #fff;
  border: none;
  border-radius: 4px;
  cursor: pointer;
}

input[type="submit"]:hover {
  background-color: #1a242f;
}

/* 統一ボタンスタイル */
a.btn,
button.btn,
input.btn {
  display: inline-flex;              /* インラインフレックスに変更 */
  align-items: center;              /* 縦中央 */
  justify-content: center;          /* 横中央 */
  padding: 0 12px;
  font-size: 0.9rem;
  height: 32px;
  line-height: 1;                   /* 数値で中央寄せが効くように */
  background-color: #1b5e20;
  color: #fff !important;
  border-radius: 4px;
  text-decoration: none;
  vertical-align: middle;
  margin: 0;
  border: none;
  cursor: pointer;
}

/* 危険操作用（削除・終了系）ボタン */
.btn-danger {
  display: inline-block;
  padding: 0 8px;
  font-size: 0.9rem;
  height: 32px;
  line-height: 32px;
  background-color: #dc3545;
  color: #fff !important;
  border-radius: 4px;
  text-decoration: none;
  vertical-align: middle;
  margin: 0;
  border: none;
  cursor: pointer;
}

.btn-danger:hover {
  background-color: #c82333; /* 少し暗い赤 */
}

a.btn:hover,
button.btn:hover,
input.btn:hover {
  background-color: #104916
}

.table-container {
  max-height: 500px;
  overflow-y: auto;
  border: 1px solid #ccc;
}

.table-container table {
  table-layout: fixed;
  width: 100%;
}

.table-container th,
.table-container td {
  white-space: nowrap;
}

th a:hover {
  text-decoration: underline;
}

/* スクロール時に項目行を固定 */
.table-container th {
  position: sticky;
  top: 0;
  background-color: #1b5e20;
  z-index: 1;
}

.match-container {
  display: flex;
  justify-content: space-between;
  gap: 40px;
}

.members-list, .participants-list {
  width: 48%;
}

/* --- 名簿管理画面（members.html）専用の列幅指定 --- */
.members-table th:nth-child(1),
.members-table td:nth-child(1) {
  width: 80px;  /* ID */
}

.members-table th:nth-child(2),
.members-table td:nth-child(2) {
  width: 120px;  /* 名前 */
}

.members-table th:nth-child(3),
.members-table td:nth-child(3) {
  width: 120px;  /* よみがな */
}

.members-table th:nth-child(4),
.members-table td:nth-child(4) {
  width: 100px;  /* 棋力 */
}

.table-scroll {
  max-height: 400px;
  overflow-y: auto;
  border: 1px solid #ccc;
}

.table-scroll table {
  width: 100%;
  border-collapse: collapse;
}

.table-scroll thead th {
  position: sticky;
  top: 0;
  background: #1b5e20;
  z-index: 1;
}

table th, table td {
  padding: 0.6rem 0.5rem;
  line-height: 1.5;
  text-align: left;
  border-bottom: 1px solid #ddd;
}

/* main コンテンツの余白を減らす */
main {
  padding: 1rem 2rem; /* ← もともと 2rem の上下だった場合は軽減 */
}

/* h2 見出しの余白を調整 */
h2 {
  margin-top: 0rem;
  margin-bottom: 1rem;
  text-align: center;
}

/* header の余白を縮小（ロゴ周り） */
header {
  padding-bottom: 0rem;
  padding: 1rem 1rem 0.5rem;
}

.participant-header {
  justify-content: flex-start !important;
  padding-left: 8px;
}

/* ===== 対局中カードの視覚強調（種別ごと） ===== */
.match-card.in-progress.認定戦 {
  background-color: #fff1f1;           /* 薄い赤 */
  border-color: #ffb3b3 !important;
  box-shadow: 0 0 0 2px rgba(255, 77, 77, 0.12) inset;
}

.match-card.in-progress.指導 {
  background-color: #f1f7ff;           /* 薄い青 */
  border-color: #b3d1ff !important;
  box-shadow: 0 0 0 2px rgba(77, 136, 255, 0.12) inset;
}

.match-card.in-progress.フリー {
  background-color: #fffdf1;           /* 薄い黄色 */
  border-color: #ffe9a3 !important;
  box-shadow: 0 0 0 2px rgba(255, 221, 77, 0.12) inset;
}

.match-card.in-progress.変動値指定対局 {
  background-color: #f1fff4;           /* 薄い緑 */
  border-color: #a3ffb7 !important;
  box-shadow: 0 0 0 2px rgba(77, 255, 136, 0.12) inset;
}

/* manual.html のロゴ */
.hero h1 .logo {
  height: 40px;          /* ロゴ高さ（調整可） */
  vertical-align: middle;
  margin-right: 6px;     /* ロゴと文字の間隔 */
}

.login-logo {
  height: 40px;        /* ロゴ高さ（調整可） */
  width: auto;
  display: inline-block;
  margin-top: 0.25rem;
}

/* ===== 利用規約ページの条項見出しデザイン ===== */
.terms-heading {
  background-color: #1b5e20;
  color: #fff;                 /* 白抜き文字 */
  padding: 8px 12px;
  border-radius: 4px;
  font-size: 1.1rem;
  margin-top: 2rem;
  margin-bottom: 0.75rem;
  text-align: left;
}

/* 規約本文の段落調整 */
.terms-page p,
.terms-page ol {
  line-height: 1.6;
  margin-bottom: 1rem;
}

/* 戻るボタン（ログインへ） */
.back-to-login {
  margin-top: 2.5rem;
  display: inline-block;
}