/* 管理画面スタイル */
.admin-page {
  min-height: 100vh;
  background: #f0f0f0;
  padding: 24px;
}

.admin-login {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
}

.admin-login-box {
  background: #fff;
  border-radius: 12px;
  padding: 40px;
  max-width: 400px;
  width: 100%;
  box-shadow: 0 4px 20px rgba(0,0,0,0.1);
}

.admin-logo {
  font-size: 22px;
  letter-spacing: 0.1em;
  text-align: center;
  margin: 0 0 4px;
}

.admin-sub {
  text-align: center;
  color: #666;
  font-size: 14px;
  margin: 0 0 28px;
}

.admin-form .field {
  margin-bottom: 16px;
}

.admin-form .field-label {
  display: block;
  font-size: 13px;
  margin-bottom: 4px;
  color: #444;
}

.admin-form input {
  width: 100%;
  padding: 10px 14px;
  border-radius: 8px;
  border: 1px solid #ccc;
}

.admin-form .error-msg {
  color: #c00;
  font-size: 13px;
  margin: 0 0 12px;
}

.admin-note {
  font-size: 12px;
  color: #888;
  margin: 16px 0 0;
  text-align: center;
}

.back-link {
  display: block;
  text-align: center;
  margin-top: 20px;
  font-size: 14px;
  color: #666;
}

/* 管理画面ヘッダー */
.admin-header {
  background: #222;
  color: #fff;
  padding: 16px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin: -24px -24px 24px -24px;
}

.admin-header h1 {
  font-size: 18px;
  margin: 0;
  letter-spacing: 0.08em;
}

.admin-header-actions {
  display: flex;
  gap: 12px;
  align-items: center;
}

.admin-header-actions a,
.admin-header-actions button {
  font-size: 14px;
  color: #fff;
  background: none;
  border: none;
  cursor: pointer;
  text-decoration: underline;
}

/* 管理画面メイン */
.admin-main {
  max-width: 1200px;
  margin: 0 auto;
}

.admin-tabs {
  display: flex;
  gap: 4px;
  margin-bottom: 24px;
  border-bottom: 1px solid #ddd;
}

.admin-tab {
  padding: 10px 20px;
  background: #fff;
  border: 1px solid #ddd;
  border-bottom: none;
  border-radius: 8px 8px 0 0;
  cursor: pointer;
  font-size: 14px;
}

.admin-tab.is-active {
  background: #222;
  color: #fff;
  border-color: #222;
}

.admin-card {
  background: #fff;
  border-radius: 12px;
  padding: 24px;
  margin-bottom: 24px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.06);
}

.admin-card h2 {
  font-size: 18px;
  margin: 0 0 20px;
  padding-bottom: 12px;
  border-bottom: 1px solid #eee;
}

/* 商品一覧テーブル */
.admin-table-wrap {
  overflow-x: auto;
}

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

.admin-table th,
.admin-table td {
  padding: 12px;
  text-align: left;
  border-bottom: 1px solid #eee;
}

.admin-table th {
  background: #f8f8f8;
  font-weight: 600;
  font-size: 13px;
}

.admin-table td {
  font-size: 14px;
}

.admin-table .thumb {
  width: 48px;
  height: 48px;
  object-fit: cover;
  border-radius: 4px;
}

.admin-table .actions {
  display: flex;
  gap: 8px;
}

.admin-table .btn-sm {
  padding: 6px 12px;
  font-size: 13px;
  border-radius: 6px;
  cursor: pointer;
  border: 1px solid #ccc;
  background: #fff;
}

.admin-table .btn-sm:hover {
  background: #f5f5f5;
}

.admin-table .btn-sm.btn-danger {
  border-color: #c00;
  color: #c00;
}

.admin-table .btn-sm.btn-danger:hover {
  background: #fee;
}

/* 商品編集フォーム */
.product-form .form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-bottom: 16px;
}

.product-form .form-row.full {
  grid-template-columns: 1fr;
}

.product-form .field {
  margin-bottom: 16px;
}

.product-form .field-label {
  display: block;
  font-size: 13px;
  margin-bottom: 4px;
  color: #444;
}

.product-form input,
.product-form select,
.product-form textarea {
  width: 100%;
  padding: 10px 14px;
  border-radius: 8px;
  border: 1px solid #ccc;
}

.product-form textarea {
  min-height: 100px;
  resize: vertical;
}

.product-form .form-actions {
  margin-top: 24px;
  display: flex;
  gap: 12px;
}

/* モーダル */
.admin-modal {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
  padding: 24px;
}

.admin-modal-inner {
  background: #fff;
  border-radius: 12px;
  max-width: 600px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  padding: 24px;
}

.admin-modal h2 {
  margin: 0 0 20px;
  font-size: 18px;
}

.admin-modal-close {
  float: right;
  background: none;
  border: none;
  font-size: 24px;
  cursor: pointer;
  color: #666;
}

/* コース別フィルター */
.course-filter {
  display: flex;
  gap: 8px;
  margin-bottom: 20px;
  flex-wrap: wrap;
}

.course-filter .chip {
  padding: 8px 16px;
  border-radius: 999px;
  border: 1px solid #ccc;
  background: #fff;
  cursor: pointer;
  font-size: 14px;
  text-decoration: none;
  color: inherit;
  display: inline-block;
}

.course-filter .chip.is-active {
  background: #222;
  color: #fff;
  border-color: #222;
}

@media (max-width: 640px) {
  .product-form .form-row {
    grid-template-columns: 1fr;
  }
}