*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg:       #f4f5f7;
  --surface:  #ffffff;
  --border:   #e2e4e9;
  --text:     #1a1d23;
  --text-sub: #6b7280;
  --gold:     #d4a017;
  --blue:     #2563eb;
  --blue-h:   #1d4ed8;
  --red:      #dc2626;
  --green:    #16a34a;
  --radius:   8px;
}

body { font-family: 'Hiragino Sans', 'Noto Sans JP', sans-serif; background: var(--bg); color: var(--text); font-size: 14px; line-height: 1.6; }

/* ===== GATE ===== */
#gate { min-height: 100vh; display: flex; align-items: center; justify-content: center; background: #0d1630; }
.gate-card { background: var(--surface); border-radius: 12px; padding: 40px 36px; width: 340px; box-shadow: 0 8px 32px rgba(0,0,0,0.3); display: flex; flex-direction: column; gap: 20px; }
.gate-title { text-align: center; font-size: 1rem; font-weight: 700; line-height: 1.6; }
#loginForm { display: flex; flex-direction: column; gap: 12px; }
#loginForm input { width: 100%; padding: 10px 14px; border: 1px solid var(--border); border-radius: var(--radius); font-size: 14px; outline: none; transition: border-color 0.2s; }
#loginForm input:focus { border-color: var(--blue); }
.gate-error { font-size: 12px; color: var(--red); text-align: center; min-height: 16px; }

/* ===== HEADER ===== */
.admin-header { position: sticky; top: 0; z-index: 10; background: #0d1630; color: #fff; display: flex; align-items: center; justify-content: space-between; padding: 0 24px; height: 52px; box-shadow: 0 1px 4px rgba(0,0,0,0.2); }
.admin-header-title { font-size: 13px; font-weight: 600; opacity: 0.85; }
.header-actions { display: flex; align-items: center; gap: 10px; }
.btn-export { font-size: 12px; font-weight: 700; color: #0d1630; background: #F5B200; border: none; border-radius: 4px; padding: 5px 14px; cursor: pointer; transition: opacity 0.2s; }
.btn-export:hover { opacity: 0.85; }
.btn-export:disabled { opacity: 0.5; cursor: not-allowed; }

/* ===== LAYOUT ===== */
.admin-body { display: grid; grid-template-columns: 256px 1fr; min-height: calc(100vh - 52px); }

/* ===== SIDEBAR ===== */
.admin-sidebar { background: var(--surface); border-right: 1px solid var(--border); padding: 20px 14px; display: flex; flex-direction: column; gap: 6px; }
.sidebar-label { font-size: 11px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.08em; color: var(--text-sub); padding: 0 8px; margin-bottom: 4px; }
.cat-item { display: flex; align-items: center; gap: 8px; padding: 7px 10px; border-radius: 6px; cursor: pointer; transition: background 0.15s; }
.cat-item:hover { background: var(--bg); }
.cat-item input[type="radio"] { accent-color: var(--blue); flex-shrink: 0; }
.cat-name { flex: 1; font-size: 12.5px; }
.cat-count { font-size: 11px; font-weight: 700; color: var(--text-sub); background: var(--bg); border-radius: 20px; padding: 1px 8px; min-width: 26px; text-align: center; }
.cat-item--all .cat-name { font-weight: 700; }
.cat-divider { height: 1px; background: var(--border); margin: 4px 0; }

/* ===== MAIN ===== */
.admin-main { padding: 24px 28px; display: flex; flex-direction: column; gap: 20px; overflow-x: hidden; }

/* ===== SUB FILTER ===== */
.sub-filter-bar { display: flex; align-items: center; gap: 12px; background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 12px 16px; }
.sub-filter-label { font-size: 12px; font-weight: 700; color: var(--text-sub); white-space: nowrap; }
.sub-filter-bar select { flex: 1; padding: 7px 10px; border: 1px solid var(--border); border-radius: 6px; font-size: 13px; outline: none; background: var(--bg); cursor: pointer; }
.sub-filter-bar select:focus { border-color: var(--blue); }

/* ===== TABLE ===== */
.table-area { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; }
.table-toolbar { display: flex; align-items: center; justify-content: space-between; padding: 10px 16px; border-bottom: 1px solid var(--border); background: #fafafa; }
.table-info { font-size: 12px; color: var(--text-sub); font-weight: 600; }
.table-actions { display: flex; gap: 12px; }
.table-scroll { overflow-x: auto; max-height: 400px; overflow-y: auto; }

.data-table { width: 100%; border-collapse: collapse; font-size: 13px; white-space: nowrap; }
.data-table th { position: sticky; top: 0; background: #f8f9fa; border-bottom: 2px solid var(--border); padding: 8px 12px; text-align: left; font-size: 11px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.05em; color: var(--text-sub); }
.data-table td { padding: 8px 12px; border-bottom: 1px solid var(--bg); vertical-align: middle; max-width: 240px; overflow: hidden; text-overflow: ellipsis; }
.data-table tr:last-child td { border-bottom: none; }
.data-table tbody tr:hover { background: #f0f4ff; }
.data-table tbody tr.selected { background: #eff6ff; }

/* チェックボックス列 */
.data-table th.col-check,
.data-table td.col-check { width: 36px; padding: 8px; text-align: center; }
.data-table input[type="checkbox"] { accent-color: var(--blue); width: 14px; height: 14px; cursor: pointer; }

/* 特殊セル */
.badge { display: inline-block; font-size: 11px; font-weight: 700; padding: 2px 8px; border-radius: 20px; }
.badge-paid   { background: #dcfce7; color: var(--green); }
.badge-pending { background: #fef9c3; color: #854d0e; }
.badge-card   { background: #eff6ff; color: var(--blue); }
.badge-transfer { background: #f3f4f6; color: var(--text-sub); }

/* ===== COMPOSER ===== */
.composer { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 20px 24px; display: flex; flex-direction: column; gap: 16px; }
.composer-title { font-size: 14px; font-weight: 700; color: var(--text); }
.composer-field { display: flex; flex-direction: column; gap: 6px; }
.composer-field label { font-size: 12px; font-weight: 700; color: var(--text); }
.field-note { font-size: 11px; color: var(--text-sub); }
.field-note code { background: var(--bg); padding: 1px 5px; border-radius: 3px; font-family: monospace; }
.composer-field input,
.composer-field textarea { width: 100%; padding: 10px 14px; border: 1px solid var(--border); border-radius: var(--radius); font-size: 14px; font-family: inherit; outline: none; resize: vertical; transition: border-color 0.2s; }
.composer-field input:focus,
.composer-field textarea:focus { border-color: var(--blue); }

/* ===== SEND BAR ===== */
.send-bar { display: flex; gap: 12px; flex-wrap: wrap; }

/* ===== RESULT ===== */
.result-box { padding: 14px 18px; border-radius: var(--radius); font-size: 13px; font-weight: 600; }
.result-box.success { background: #f0fdf4; border: 1px solid #86efac; color: var(--green); }
.result-box.error   { background: #fef2f2; border: 1px solid #fca5a5; color: var(--red); }
.result-box.loading { background: #eff6ff; border: 1px solid #93c5fd; color: var(--blue); }

/* ===== BUTTONS ===== */
.btn-primary { width: 100%; padding: 11px; background: var(--blue); color: #fff; border: none; border-radius: var(--radius); font-size: 14px; font-weight: 700; cursor: pointer; transition: background 0.2s; }
.btn-primary:hover { background: var(--blue-h); }
.btn-primary:disabled { opacity: 0.5; cursor: not-allowed; }
.btn-logout { font-size: 12px; color: rgba(255,255,255,0.6); background: none; border: 1px solid rgba(255,255,255,0.2); border-radius: 4px; padding: 4px 12px; cursor: pointer; }
.btn-reload { margin-top: 10px; font-size: 12px; color: var(--text-sub); background: none; border: 1px solid var(--border); border-radius: 4px; padding: 6px 12px; cursor: pointer; width: 100%; }
.btn-reload:hover { background: var(--bg); }
.btn-text { font-size: 12px; color: var(--blue); background: none; border: none; cursor: pointer; padding: 0; }
.btn-text:hover { text-decoration: underline; }
.btn-load-table { padding: 7px 16px; background: var(--blue); color: #fff; border: none; border-radius: 6px; font-size: 13px; font-weight: 700; cursor: pointer; white-space: nowrap; }
.btn-load-table:hover { background: var(--blue-h); }
.btn-send-all { padding: 10px 20px; background: var(--gold); color: #fff; border: none; border-radius: var(--radius); font-size: 13px; font-weight: 700; cursor: pointer; transition: opacity 0.2s; }
.btn-send-all:hover { opacity: 0.88; }
.btn-send-selected { padding: 10px 20px; background: var(--blue); color: #fff; border: none; border-radius: var(--radius); font-size: 13px; font-weight: 700; cursor: pointer; transition: opacity 0.2s; }
.btn-send-selected:hover:not(:disabled) { opacity: 0.88; }
.btn-send-selected:disabled { background: #d1d5db; cursor: not-allowed; opacity: 1; }