/* ============================================================
   メール管理システム スタイルシート
   査読管理システムの style.css をそのまま流用
   ============================================================ */

/* ---- CSS変数 -------------------------------------------- */
:root {
  --color-primary:   #2563eb;
  --color-primary-d: #1d4ed8;
  --color-danger:    #dc2626;
  --color-success:   #16a34a;
  --color-warning:   #d97706;
  --color-info:      #0891b2;
  --color-gray-50:   #f8fafc;
  --color-gray-100:  #f1f5f9;
  --color-gray-200:  #e2e8f0;
  --color-gray-400:  #94a3b8;
  --color-gray-600:  #475569;
  --color-gray-800:  #1e293b;
  --color-white:     #ffffff;
  --font-main:  'Noto Sans JP', 'Inter', sans-serif;
  --radius:     6px;
  --shadow:     0 1px 3px rgba(0,0,0,.12), 0 1px 2px rgba(0,0,0,.08);
  --shadow-md:  0 4px 12px rgba(0,0,0,.12);
}

/* ---- リセット -------------------------------------------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
body { font-family: var(--font-main); font-size: 14px; color: var(--color-gray-800); background: var(--color-gray-50); line-height: 1.6; padding-bottom: 25vh; }
body.login-page { padding-bottom: 0; }
a { color: var(--color-primary); text-decoration: none; }
a:hover { text-decoration: underline; }
img { max-width: 100%; }

/* ---- ヘッダー -------------------------------------------- */
.site-header { background: var(--color-primary); color: var(--color-white); position: sticky; top: 0; z-index: 100; box-shadow: var(--shadow-md); }
.header-inner { max-width: 1280px; margin: 0 auto; padding: 0 1.5rem; height: 56px; display: flex; align-items: center; gap: 1.5rem; }
.site-logo { font-size: 16px; font-weight: 700; color: var(--color-white); white-space: nowrap; }
.site-logo:hover { text-decoration: none; opacity: .85; }
.header-nav { display: flex; gap: .25rem; flex: 1; }
.header-nav a { color: rgba(255,255,255,.85); padding: .35rem .8rem; border-radius: var(--radius); font-size: 13px; font-weight: 500; transition: background .15s; }
.header-nav a:hover, .header-nav a.active { background: rgba(255,255,255,.18); color: var(--color-white); text-decoration: none; }
.header-right { display: flex; align-items: center; gap: .75rem; flex-shrink: 0; }
.user-name { font-size: 13px; color: rgba(255,255,255,.85); max-width: 160px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

/* ---- メインコンテンツ ----------------------------------- */
.main-content { max-width: 1280px; margin: 0 auto; padding: 2rem 1.5rem; }

/* ---- フッター -------------------------------------------- */
.site-footer { text-align: center; padding: 1.5rem; font-size: 12px; color: var(--color-gray-400); border-top: 1px solid var(--color-gray-200); margin-top: 3rem; }

/* ---- ログインページ -------------------------------------- */
body.login-page { background: linear-gradient(135deg, #1e3a8a 0%, #1d4ed8 50%, #2563eb 100%); min-height: 100vh; display: flex; align-items: center; justify-content: center; }
.login-wrap { width: 100%; max-width: 420px; padding: 1rem; }
.login-box { background: var(--color-white); border-radius: 12px; padding: 2.5rem 2rem; box-shadow: 0 20px 60px rgba(0,0,0,.25); }
.login-header { text-align: center; margin-bottom: 1.75rem; }
.login-header h1 { font-size: 20px; font-weight: 700; color: var(--color-gray-800); margin-bottom: .35rem; }
.login-header p { font-size: 13px; color: var(--color-gray-600); }

/* ---- フォーム -------------------------------------------- */
.form-group { margin-bottom: 1rem; }
.form-group label { display: block; font-size: 13px; font-weight: 500; color: var(--color-gray-600); margin-bottom: .35rem; }
.form-group input, .form-group select, .form-group textarea { width: 100%; padding: .6rem .85rem; border: 1px solid var(--color-gray-200); border-radius: var(--radius); font-family: var(--font-main); font-size: 14px; color: var(--color-gray-800); background: var(--color-white); transition: border-color .15s, box-shadow .15s; }
.form-group input:focus, .form-group select:focus, .form-group textarea:focus { outline: none; border-color: var(--color-primary); box-shadow: 0 0 0 3px rgba(37,99,235,.15); }
.form-group textarea { resize: vertical; min-height: 100px; }
.form-hint { font-size: 11px; color: var(--color-gray-400); margin-top: .3rem; }

/* ---- ボタン ---------------------------------------------- */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: .4rem; padding: .55rem 1.25rem; border-radius: var(--radius); font-size: 13px; font-weight: 600; font-family: var(--font-main); cursor: pointer; border: none; text-decoration: none; transition: background .15s, opacity .15s; white-space: nowrap; }
.btn:hover { text-decoration: none; opacity: .9; }
.btn-primary   { background: var(--color-primary); color: var(--color-white); }
.btn-danger    { background: var(--color-danger);  color: var(--color-white); }
.btn-success   { background: var(--color-success); color: var(--color-white); }
.btn-secondary { background: var(--color-gray-100); color: var(--color-gray-800); border: 1px solid var(--color-gray-200); }
.btn-outline   { background: transparent; border: 1.5px solid rgba(255,255,255,.7); color: var(--color-white); }
.btn-outline:hover { background: rgba(255,255,255,.15); }
.btn-sm        { padding: .35rem .85rem; font-size: 12px; }
.btn-block     { width: 100%; }
.btn-group     { display: flex; gap: .5rem; flex-wrap: wrap; }

/* ---- アラート -------------------------------------------- */
.alert { padding: .75rem 1rem; border-radius: var(--radius); font-size: 13px; margin-bottom: 1rem; border-left: 4px solid; }
.alert-danger  { background: #fef2f2; color: #991b1b; border-color: var(--color-danger); }
.alert-success { background: #f0fdf4; color: #166534; border-color: var(--color-success); }
.alert-info    { background: #ecfeff; color: #155e75; border-color: var(--color-info); }
.alert-warning { background: #fffbeb; color: #92400e; border-color: var(--color-warning); }

/* ---- カード ---------------------------------------------- */
.card { background: var(--color-white); border: 1px solid var(--color-gray-200); border-radius: 8px; box-shadow: var(--shadow); overflow: hidden; }
.card-header { padding: 1rem 1.25rem; border-bottom: 1px solid var(--color-gray-200); display: flex; align-items: center; justify-content: space-between; gap: 1rem; }
.card-header h2 { font-size: 15px; font-weight: 700; color: var(--color-gray-800); }
.card-body { padding: 1.25rem; }

/* ---- テーブル -------------------------------------------- */
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: 13px; }
thead th { background: var(--color-gray-50); color: var(--color-gray-600); font-weight: 600; padding: .65rem .85rem; text-align: left; border-bottom: 2px solid var(--color-gray-200); white-space: nowrap; }
tbody td { padding: .65rem .85rem; border-bottom: 1px solid var(--color-gray-100); vertical-align: middle; }
tbody tr:last-child td { border-bottom: none; }
tbody tr:hover { background: var(--color-gray-50); }

/* ---- バッジ ---------------------------------------------- */
.badge { display: inline-block; padding: .2rem .6rem; border-radius: 999px; font-size: 11px; font-weight: 600; white-space: nowrap; }

/* ---- ページヘッダー -------------------------------------- */
.page-header { display: flex; align-items: center; justify-content: space-between; gap: 1rem; margin-bottom: 1.5rem; }
.page-header h1 { font-size: 20px; font-weight: 700; }

/* ---- ユーティリティ -------------------------------------- */
.mt-1 { margin-top: .5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.text-muted   { color: var(--color-gray-400); }
.text-right   { text-align: right; }
.text-center  { text-align: center; }
.d-flex       { display: flex; }
.gap-1        { gap: .5rem; }
.align-center { align-items: center; }
.w-100        { width: 100%; }

/* ---- レスポンシブ ---------------------------------------- */
@media (max-width: 768px) {
  .header-inner { padding: 0 1rem; }
  .header-nav   { display: none; }
  .main-content { padding: 1rem; }
  .page-header  { flex-direction: column; align-items: flex-start; }
}