*{margin:0;padding:0;box-sizing:border-box;font-family:'Segoe UI','Microsoft YaHei',sans-serif;}
body{background:#f8fafc;color:#334155;line-height:1.4;padding:8px;}
.container{max-width:1400px;margin:0 auto;}
header{background:white;border-radius:5px;padding:12px;margin-bottom:12px;box-shadow:0 1px 4px rgba(0,0,0,0.05);border:1px solid #e2e8f0;}
h1{font-size:18px;color:#1e293b;margin-bottom:4px;}
.subtitle{color:#64748b;font-size:12px;margin-bottom:8px;}
.search-box{display:flex;gap:0;margin-bottom:8px;border-radius:22px;overflow:hidden;border:1px solid #cbd5e1;}
.search-box input{flex:1;padding:8px 14px;border:none;font-size:12px;outline:none;}
.search-box input:focus{outline:none;}
.search-btn{padding:8px 14px;background:#3b82f6;color:white;border:none;cursor:pointer;font-weight:500;font-size:12px;transition:background 0.3s;display:flex;align-items:center;justify-content:center;gap:4px;border-radius:0 22px 22px 0;}
.search-btn:hover{background:#2563eb;}
.btn{padding:5px 8px;background:#3b82f6;color:white;border:none;border-radius:3px;cursor:pointer;font-weight:500;font-size:10px;transition:background 0.3s;display:inline-flex;align-items:center;justify-content:center;gap:2px;white-space:nowrap;height:24px;line-height:1;vertical-align:middle;}
.btn:hover{background:#2563eb;}
.btn-danger{background:#ef4444;}
.btn-danger:hover{background:#dc2626;}
.btn-success{background:#10b981;}
.btn-success:hover{background:#059669;}
.btn-secondary{background:#64748b;}
.btn-secondary:hover{background:#475569;}
.btn-small{padding:3px 6px;font-size:9px;border-radius:2px;height:22px;}
.download-link{text-decoration:none;}
.upload-section{background:white;border-radius:5px;padding:12px;margin-bottom:12px;box-shadow:0 1px 4px rgba(0,0,0,0.05);border:1px solid #e2e8f0;}
.section-title{font-size:15px;margin-bottom:8px;color:#1e293b;}
.upload-options{display:flex;gap:12px;flex-wrap:wrap;}
.upload-option{flex:1;min-width:100%;}
.upload-form{background:#f8fafc;padding:12px;border-radius:5px;border:1px dashed #cbd5e1;}

/* 美化文件选择器 */
.file-input-wrapper{position:relative;display:inline-block;width:100%;margin-bottom:8px;}
.file-input-wrapper input[type="file"]{position:absolute;top:0;left:0;width:100%;height:100%;opacity:0;cursor:pointer;}
.file-input-label{display:block;padding:10px 15px;background:#f1f5f9;border:2px dashed #cbd5e1;border-radius:4px;text-align:center;color:#64748b;font-size:13px;cursor:pointer;transition:all 0.3s;}
.file-input-label:hover{background:#e2e8f0;border-color:#94a3b8;}
.file-input-label i{margin-right:6px;}

/* 上传按钮样式 */
.upload-btn-container{display:flex;justify-content:center;margin-top:10px;}
.upload-btn{padding:8px 20px;background:#3b82f6;color:white;border:none;border-radius:4px;cursor:pointer;font-weight:500;font-size:13px;transition:background 0.3s;display:inline-flex;align-items:center;justify-content:center;gap:6px;}
.upload-btn:hover{background:#2563eb;}

.message{padding:6px 8px;border-radius:4px;margin-bottom:8px;font-size:11px;}
.success{background:#d1fae5;color:#065f46;border:1px solid #a7f3d0;}
.error{background:#fee2e2;color:#991b1b;border:1px solid #fecaca;}
.image-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:10px;margin-top:12px;}
.image-card{background:white;border-radius:4px;overflow:hidden;box-shadow:0 1px 4px rgba(0,0,0,0.08);transition:transform 0.3s,box-shadow 0.3s;border:1px solid #e2e8f0;}
.image-card:hover{transform:translateY(-1px);box-shadow:0 2px 8px rgba(0,0,0,0.12);}
.image-container{width:100%;height:0;padding-bottom:66.67%;position:relative;overflow:hidden;background:#f1f5f9;display:flex;align-items:center;justify-content:center;}
.image-container img{position:absolute;top:0;left:0;width:100%;height:100%;object-fit:cover;cursor:pointer;transition:transform 0.5s;opacity:0;transition:opacity 0.3s;}
.image-container img.loaded{opacity:1;}
.loading-placeholder{position:absolute;top:0;left:0;width:100%;height:100%;display:flex;align-items:center;justify-content:center;color:#94a3b8;font-size:12px;}
.image-info{padding:6px;}

/* 用户端：编号和按钮在同一行 */
.user-image-info{display:flex;justify-content:space-between;align-items:center;margin-bottom:6px;gap:4px;}
.user-image-id{font-size:11px;font-weight:600;color:#1e293b;display:flex;align-items:center;white-space:nowrap;}
.user-image-id-text{font-weight:500;color:#64748b;margin-right:2px;}

/* 管理端：编号和按钮不在同一行 */
.admin-image-info{padding:6px;}
.admin-image-id-row{display:flex;justify-content:space-between;align-items:center;margin-bottom:6px;}
.admin-image-id{font-size:11px;font-weight:600;color:#1e293b;display:flex;align-items:center;white-space:nowrap;}
.admin-image-id-text{font-weight:500;color:#64748b;margin-right:2px;}
.admin-image-actions-row{display:flex;gap:3px;flex-wrap:nowrap;align-items:center;}
.admin-action-buttons{display:flex;gap:3px;flex-wrap:nowrap;align-items:center;}
.action-select{margin-left:2px;}
.admin-delete-form{display:inline;}

.admin-controls{display:flex;justify-content:space-between;align-items:center;margin-bottom:8px;padding:8px;background:white;border-radius:4px;border:1px solid #e2e8f0;font-size:12px;}
.admin-controls h3{display:flex;align-items:center;gap:8px;}
.tip-text{color:#64748b;font-size:11px;font-weight:normal;margin-left:8px;border-left:1px solid #cbd5e1;padding-left:8px;}
.batch-actions{display:flex;gap:6px;align-items:center;font-size:11px;}

/* 自定义提示对话框 */
.custom-alert{display:none;position:fixed;top:0;left:0;width:100%;height:100%;background:rgba(0,0,0,0.6);z-index:2000;justify-content:center;align-items:center;}
.alert-content{background:white;border-radius:8px;padding:20px;max-width:90%;width:400px;box-shadow:0 10px 30px rgba(0,0,0,0.2);text-align:center;}
.alert-title{font-size:16px;font-weight:600;color:#1e293b;margin-bottom:10px;}
.alert-message{font-size:14px;color:#334155;margin-bottom:20px;line-height:1.5;}
.alert-buttons{display:flex;justify-content:center;gap:12px;}
.alert-btn{padding:8px 20px;border:none;border-radius:4px;cursor:pointer;font-weight:500;font-size:13px;transition:background 0.3s;}
.alert-confirm{background:#3b82f6;color:white;}
.alert-confirm:hover{background:#2563eb;}

.modal{display:none;position:fixed;top:0;left:0;width:100%;height:100%;background:rgba(0,0,0,0.85);z-index:1000;justify-content:center;align-items:center;}
.modal-content{max-width:90vw;max-height:90vh;position:relative;}
.modal-img{max-width:100%;max-height:85vh;border-radius:5px;box-shadow:0 8px 30px rgba(0,0,0,0.3);}
.modal-nav{position:absolute;top:50%;transform:translateY(-50%);background:rgba(255,255,255,0.2);color:white;border:none;width:40px;height:40px;border-radius:50%;font-size:16px;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:background 0.3s;}
.modal-nav:hover{background:rgba(255,255,255,0.3);}
.prev{left:10px;}
.next{right:10px;}
.close-modal{position:absolute;top:10px;right:10px;background:rgba(0,0,0,0.7);color:white;border:none;width:30px;height:30px;border-radius:50%;font-size:16px;cursor:pointer;display:flex;align-items:center;justify-content:center;}
.empty-state{text-align:center;padding:25px 10px;color:#64748b;}
.empty-state i{font-size:32px;margin-bottom:8px;opacity:0.5;}
footer{margin-top:20px;text-align:center;color:#94a3b8;font-size:11px;padding:10px;}
.nav-links{display:flex;gap:8px;margin-top:8px;}
.nav-link{color:#3b82f6;text-decoration:none;font-weight:500;font-size:11px;}
.nav-link:hover{text-decoration:underline;}

/* 用户页面搜索框样式 */
.user-search-container{background:transparent;padding:0;margin-bottom:12px;box-shadow:none;border:none;}
.user-search-container .search-box{background:white;border-radius:22px;box-shadow:0 1px 4px rgba(0,0,0,0.08);border:1px solid #e2e8f0;}

@media (max-width:640px){
  .image-grid{grid-template-columns:repeat(3,minmax(85px,1fr));gap:6px;margin-top:10px;}
  .image-info{padding:5px;}
  .user-image-id{font-size:10px;}
  .admin-image-id{font-size:10px;}
  .btn-small{padding:2px 4px;font-size:8px;height:20px;}
  .upload-options{flex-direction:column;}
  .upload-option{min-width:100%;}
  .tip-text{font-size:10px;margin-left:4px;padding-left:4px;}
}

@media (max-width:480px){
  .image-grid{grid-template-columns:repeat(3,minmax(75px,1fr));gap:5px;}
  .admin-action-buttons{gap:2px;}
  .search-btn{padding:8px 10px;}
  .tip-text{font-size:9px;}
}