* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: 'Segoe UI', 'Hiragino Sans', sans-serif; background: #f5f5f5; color: #333; }

.navbar { background: #1a237e; color: #fff; padding: 12px 24px; display: flex; align-items: center; gap: 24px; }
.nav-brand { color: #fff; text-decoration: none; font-size: 18px; font-weight: bold; }
.nav-link { color: rgba(255,255,255,.8); text-decoration: none; font-size: 14px; margin-left: auto; }
.nav-link:hover { color: #fff; }

.container { max-width: 1400px; margin: 20px auto; padding: 0 16px; }

h1 { margin-bottom: 16px; }
h1 small { color: #888; font-weight: normal; font-size: 0.6em; }

/* Cards */
.card-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 16px; }
.card { background: #fff; border-radius: 8px; padding: 20px; box-shadow: 0 1px 3px rgba(0,0,0,.12); }
.card.card-stale { border-left: 4px solid #b91c1c; background: #fef2f2; }
.card h2 { margin-bottom: 8px; }
.card p { margin-bottom: 4px; color: #666; }
.card .genba-code { font-family: monospace; }
.card .last-time { font-weight: bold; color: #333; }
.card-actions { margin-top: 12px; display: flex; gap: 6px; flex-wrap: wrap; }
.card-actions .btn { white-space: nowrap; }

/* Buttons */
.btn { display: inline-block; padding: 8px 16px; background: #1a237e; color: #fff; border: none;
       border-radius: 4px; text-decoration: none; font-size: 14px; cursor: pointer; }
.btn:hover { background: #283593; }
.btn-outline { background: transparent; color: #1a237e; border: 1px solid #1a237e; }
.btn-outline:hover { background: #e8eaf6; }
.btn-sm { padding: 4px 10px; font-size: 12px; }

/* Toolbar */
.toolbar { display: flex; align-items: center; gap: 16px; margin-bottom: 16px; flex-wrap: wrap; }
.date-filter { display: flex; align-items: center; gap: 8px; }
.date-filter input { padding: 6px 8px; border: 1px solid #ccc; border-radius: 4px; }
.record-count { color: #888; margin-left: auto; }

/* Table */
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; background: #fff; font-size: 13px; }
th, td { padding: 6px 10px; border: 1px solid #e0e0e0; text-align: right; }
th { background: #e8eaf6; position: sticky; top: 0; font-weight: 600; }
td:first-child, th:first-child { text-align: left; }
.nowrap { white-space: nowrap; }
.empty { text-align: center; color: #999; padding: 40px; }

/* Pagination */
.pagination { display: flex; align-items: center; justify-content: center; gap: 12px; margin-top: 16px; }

/* Chart */
.chart-container { background: #fff; border-radius: 8px; padding: 16px; height: 500px;
                   box-shadow: 0 1px 3px rgba(0,0,0,.12); }

/* Channel selector */
.ch-selector { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; margin-bottom: 12px;
               font-size: 13px; }
.ch-selector label { cursor: pointer; }

/* Responsive - tablet (max 1024px) */
@media (max-width: 1024px) {
    .container { padding: 0 12px; }
    .card-grid { grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); }
}

/* Responsive - mobile (max 768px) */
@media (max-width: 768px) {
    .navbar { padding: 10px 12px; font-size: 15px; }
    .container { padding: 0 8px; margin: 10px auto; }
    h1 { font-size: 1.2rem; margin-bottom: 10px; }
    h2 { font-size: 1.05rem; }
    .toolbar { gap: 6px; font-size: 13px; flex-wrap: wrap; }
    .btn { padding: 6px 10px; font-size: 12px; }
    .btn-sm { padding: 4px 8px; font-size: 11px; }
    .card-grid { grid-template-columns: 1fr; }
    .card { padding: 12px; }
    .card-actions { gap: 4px; }
    .card-actions .btn-sm { font-size: 11px; padding: 3px 8px; }
    /* table: 横スクロール許容 */
    .table-wrap { overflow-x: auto; -webkit-overflow-scrolling: touch; }
    table { font-size: 11px; min-width: 480px; }
    th, td { padding: 4px 6px; }
    .chart-container { height: 280px; padding: 8px; }
    .ch-selector { font-size: 11px; gap: 4px; }
    .ch-selector label { font-size: 11px; }
    /* form 入力欄を縦並びに */
    form .form-row, .form-row { flex-direction: column; align-items: stretch; gap: 8px; }
    form input[type=text], form input[type=number], form input[type=password], form input[type=email],
    form select, form textarea {
        font-size: 16px;  /* iOS で auto-zoom 防止 (16px 以上) */
        width: 100%;
        box-sizing: border-box;
    }
    /* 設定画面の table 行は card 風にして縦並びに */
    .feat-row { flex-direction: row; flex-wrap: wrap; }
    /* タッチ操作で押しやすいタップ領域 (44x44 推奨) */
    .arrow-btn { min-width: 32px; min-height: 28px; }
}

/* Responsive - 小型 mobile (max 480px) */
@media (max-width: 480px) {
    h1 { font-size: 1.05rem; }
    .navbar { font-size: 13px; padding: 8px 10px; }
    .navbar a { font-size: 12px; }
    .btn { padding: 5px 8px; font-size: 11px; }
    .card { padding: 10px; }
    .card strong { font-size: 14px; }
}