/* 管理后台样式 */
* { box-sizing: border-box; }
body { margin: 0; font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Microsoft YaHei", sans-serif; background: #f5f6f8; color: #2c3e50; line-height: 1.6; }
.container { max-width: 960px; margin: 0 auto; padding: 0 16px; }
.muted { color: #7f8c8d; }
a { color: #3498db; text-decoration: none; }

.admin-header { background: #2c3e50; color: #fff; padding: 12px 0; }
.admin-header .container { display: flex; justify-content: space-between; align-items: center; }
.admin-brand { font-weight: 700; font-size: 1.1rem; }

.admin-nav { background: #fff; border-bottom: 1px solid #e5e7eb; margin-bottom: 20px; }
.admin-nav .container { display: flex; gap: 4px; flex-wrap: wrap; }
.nav-btn { border: none; background: none; padding: 12px 14px; cursor: pointer; font-size: .95rem; color: #2c3e50; }
.nav-btn:hover { background: #f0f2f4; }
.nav-btn.active { color: #3498db; border-bottom: 2px solid #3498db; }

.view { background: #fff; border-radius: 10px; padding: 20px; margin-bottom: 24px; box-shadow: 0 1px 3px rgba(0,0,0,.06); }
.view-head { display: flex; justify-content: space-between; align-items: center; margin-bottom: 16px; flex-wrap: wrap; gap: 10px; }
.view-head h2 { margin: 0; font-size: 1.25rem; }
.view h3 { margin: 24px 0 8px; }

.btn { display: inline-block; border: 1px solid #d1d5db; background: #fff; color: #2c3e50; padding: 7px 14px; border-radius: 8px; cursor: pointer; font-size: .9rem; }
.btn:hover { background: #f0f2f4; }
.btn-primary { background: #3498db; border-color: #3498db; color: #fff; }
.btn-primary:hover { background: #2f89c5; }
.btn-danger { color: #e74c3c; border-color: #f5c6cb; }
.btn-danger:hover { background: #fdecea; }
.btn-sm { padding: 4px 10px; font-size: .82rem; }

.alert { display: none; padding: 12px 16px; border-radius: 8px; margin-bottom: 16px; }
.alert.ok { background: #e8f8ef; color: #1e8e3e; border: 1px solid #b7e4c7; }
.alert.err { background: #fdecea; color: #c0392b; border: 1px solid #f5c6cb; }

.table { width: 100%; border-collapse: collapse; }
.table th, .table td { border-bottom: 1px solid #eef0f2; padding: 10px 8px; text-align: left; }
.table th { font-size: .85rem; color: #7f8c8d; }
.badge { background: #fff3cd; color: #856404; padding: 2px 8px; border-radius: 20px; font-size: .8rem; }

.editor-form label { display: flex; flex-direction: column; font-size: .85rem; color: #555; gap: 4px; }
.editor-form input, .editor-form select, .editor-form textarea { padding: 8px 10px; border: 1px solid #d1d5db; border-radius: 8px; font-size: .92rem; font-family: inherit; }
.form-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px; margin-bottom: 16px; }
.form-grid label { display: flex; flex-direction: column; font-size: .85rem; color: #555; gap: 4px; }
.form-grid input, .form-grid select, .form-grid textarea { padding: 8px 10px; border: 1px solid #d1d5db; border-radius: 8px; font-size: .92rem; font-family: inherit; }
.editor-form #markdown-editor, #markdown-editor { min-height: 420px; }

.media-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 14px; }
.media-item { border: 1px solid #e5e7eb; border-radius: 10px; overflow: hidden; text-align: center; padding-bottom: 10px; }
.media-preview { height: 120px; background: #f7f8fa; display: flex; align-items: center; justify-content: center; overflow: hidden; }
.media-preview img { max-width: 100%; max-height: 100%; object-fit: cover; }
.media-name { font-size: .78rem; color: #7f8c8d; padding: 6px 8px 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.media-meta { font-size: .72rem; padding: 2px 0 6px; }
.media-actions { padding: 0 6px; display: flex; gap: 4px; justify-content: center; flex-wrap: wrap; }
.media-actions .btn-sm { font-size: .72rem; padding: 3px 8px; }
.modal-head { display: flex; justify-content: space-between; align-items: center; margin-bottom: 10px; }
.media-modal-box { max-width: 720px; max-height: 80vh; overflow-y: auto; }

.card { border: 1px solid #e5e7eb; border-radius: 10px; padding: 16px 20px; margin-bottom: 16px; }
.card ol { margin: 8px 0; padding-left: 22px; }
.card pre { background: #2c3e50; color: #ecf0f1; padding: 12px; border-radius: 8px; overflow: auto; font-size: .85rem; }
code { background: #f0f2f4; padding: 2px 6px; border-radius: 4px; }

.modal { position: fixed; inset: 0; background: rgba(0,0,0,.45); display: flex; align-items: center; justify-content: center; z-index: 100; }
.modal-box { background: #fff; border-radius: 12px; padding: 24px; width: 460px; max-width: 92vw; }
.modal-box input { width: 100%; padding: 9px 12px; border: 1px solid #d1d5db; border-radius: 8px; margin: 6px 0 4px; font-family: inherit; }
.modal-actions { display: flex; justify-content: flex-end; gap: 10px; margin-top: 14px; }

@media (max-width: 600px) { .form-grid { grid-template-columns: 1fr; } }