* { margin:0; padding:0; box-sizing:border-box; }
:root { --primary:#1890ff; --success:#52c41a; --warning:#faad14; --danger:#ff4d4f; --bg:#f0f2f5; --sidebar-bg:#001529; --card-bg:#fff; --text:#333; --text-light:#999; --border:#e8e8e8; }

body { font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif; background:var(--bg); color:var(--text); min-height:100vh; }

/* ===== 登录 ===== */
.login-container { display:flex; align-items:center; justify-content:center; min-height:100vh; background:linear-gradient(135deg,#667eea 0%,#764ba2 100%); }
.login-card { background:#fff; border-radius:12px; padding:2.5rem 2rem; width:100%; max-width:400px; box-shadow:0 20px 60px rgba(0,0,0,.15); }
.login-header { text-align:center; margin-bottom:1.5rem; }
.login-icon { font-size:3rem; margin-bottom:.5rem; }
.login-header h1 { font-size:1.5rem; color:#333; margin-bottom:.25rem; }
.login-header p { color:#999; font-size:.9rem; }
.login-hint { text-align:center; color:#999; font-size:.8rem; margin-top:1rem; }

.form-group { margin-bottom:1rem; }
.form-group label { display:block; margin-bottom:.35rem; font-size:.85rem; color:#555; font-weight:500; }
.form-group input, .form-group select, .form-group textarea { width:100%; padding:.6rem .8rem; border:1px solid var(--border); border-radius:6px; font-size:.9rem; transition:border-color .2s; outline:none; }
.form-group input:focus, .form-group select:focus, .form-group textarea:focus { border-color:var(--primary); box-shadow:0 0 0 2px rgba(24,144,255,.15); }
.form-row { display:flex; gap:1rem; }
.form-row .form-group { flex:1; }

.btn-primary { background:var(--primary); color:#fff; border:none; padding:.6rem 1.2rem; border-radius:6px; cursor:pointer; font-size:.9rem; transition:.2s; }
.btn-primary:hover { background:#40a9ff; }
.btn-secondary { background:#f5f5f5; color:#666; border:1px solid #d9d9d9; padding:.6rem 1.2rem; border-radius:6px; cursor:pointer; font-size:.9rem; }
.btn-block { width:100%; padding:.75rem; font-size:1rem; }
.btn-sm { padding:.3rem .7rem; font-size:.8rem; }
.btn-danger { background:var(--danger); color:#fff; border:none; padding:.3rem .7rem; border-radius:4px; cursor:pointer; font-size:.8rem; }
.btn-success { background:var(--success); color:#fff; border:none; padding:.3rem .7rem; border-radius:4px; cursor:pointer; font-size:.8rem; }
.btn-logout { background:transparent; color:#ff7a7a; border:1px solid #ff7a7a; padding:.35rem .8rem; border-radius:4px; cursor:pointer; font-size:.8rem; margin-top:.5rem; width:100%; transition:.2s; }
.btn-logout:hover { background:#ff7a7a; color:#fff; }

/* ===== 布局 ===== */
.main-layout { display:flex; min-height:100vh; }
.sidebar { width:220px; background:var(--sidebar-bg); color:#fff; display:flex; flex-direction:column; position:fixed; top:0; left:0; bottom:0; z-index:100; }
.sidebar-logo { padding:1.2rem 1rem; font-size:1.1rem; font-weight:bold; border-bottom:1px solid rgba(255,255,255,.1); }
.sidebar-nav { flex:1; padding:.5rem 0; }
.nav-item { display:flex; align-items:center; padding:.7rem 1.2rem; color:rgba(255,255,255,.65); text-decoration:none; font-size:.9rem; transition:.2s; border-left:3px solid transparent; cursor:pointer; }
.nav-item:hover { color:#fff; background:rgba(255,255,255,.05); }
.nav-item.active { color:#fff; background:var(--primary); border-left-color:#fff; }
.nav-icon { margin-right:.6rem; font-size:1.1rem; }
.sidebar-footer { padding:1rem; border-top:1px solid rgba(255,255,255,.1); }
.user-info { display:flex; align-items:center; gap:.5rem; font-size:.85rem; color:rgba(255,255,255,.85); margin-bottom:.4rem; }

.main-content { margin-left:220px; flex:1; padding:1.5rem; }
.page { display:none; }
.page.active { display:block; }
.page-title { font-size:1.3rem; margin-bottom:1.2rem; color:#333; }

/* ===== 统计卡片 ===== */
.stats-grid { display:grid; grid-template-columns:repeat(4,1fr); gap:1rem; margin-bottom:1.5rem; }
.stat-card { background:#fff; border-radius:8px; padding:1.2rem; text-align:center; box-shadow:0 1px 4px rgba(0,0,0,.06); }
.stat-num { display:block; font-size:2rem; font-weight:700; margin-bottom:.3rem; }
.stat-label { font-size:.85rem; color:#999; }
.stat-card.blue .stat-num { color:var(--primary); }
.stat-card.orange .stat-num { color:var(--warning); }
.stat-card.green .stat-num { color:var(--success); }
.stat-card.red .stat-num { color:var(--danger); }

/* ===== 面板 ===== */
.panel { background:#fff; border-radius:8px; padding:1.2rem; box-shadow:0 1px 4px rgba(0,0,0,.06); margin-bottom:1rem; }
.panel h3 { font-size:1rem; margin-bottom:.8rem; }

/* ===== 工具栏 ===== */
.toolbar { display:flex; gap:.8rem; align-items:center; margin-bottom:1rem; flex-wrap:wrap; }
.search-input { padding:.5rem .8rem; border:1px solid var(--border); border-radius:6px; font-size:.9rem; width:250px; outline:none; }
.search-input:focus { border-color:var(--primary); }
.filter-select { padding:.5rem .8rem; border:1px solid var(--border); border-radius:6px; font-size:.9rem; outline:none; }

/* ===== 表格 ===== */
.data-table { width:100%; border-collapse:collapse; background:#fff; border-radius:8px; overflow:hidden; box-shadow:0 1px 4px rgba(0,0,0,.06); }
.data-table thead { background:#fafafa; }
.data-table th { padding:.7rem .8rem; text-align:left; font-size:.8rem; color:#666; font-weight:600; border-bottom:2px solid #f0f0f0; }
.data-table td { padding:.65rem .8rem; font-size:.85rem; border-bottom:1px solid #f5f5f5; }
.data-table tr:hover { background:#fafafa; }

/* 状态标签 */
.tag { display:inline-block; padding:.15rem .5rem; border-radius:10px; font-size:.75rem; font-weight:500; }
.tag-pending { background:#fff7e6; color:#fa8c16; }
.tag-processing { background:#e6f7ff; color:#1890ff; }
.tag-completed { background:#f6ffed; color:#52c41a; }
.tag-normal { background:#f0f5ff; color:#2f54eb; }
.tag-high { background:#fff2e8; color:#fa541c; }
.tag-urgent { background:#fff1f0; color:#f5222d; }
.tag-admin { background:#fff0f6; color:#eb2f96; }
.tag-operator { background:#f0f5ff; color:#2f54eb; }
.tag-viewer { background:#f6ffed; color:#52c41a; }

/* ===== 弹窗 ===== */
.modal { display:none; position:fixed; top:0; left:0; right:0; bottom:0; background:rgba(0,0,0,.45); z-index:1000; align-items:center; justify-content:center; }
.modal.show { display:flex; }
.modal-content { background:#fff; border-radius:10px; width:90%; max-width:520px; max-height:85vh; overflow-y:auto; box-shadow:0 10px 40px rgba(0,0,0,.2); }
.modal-header { display:flex; justify-content:space-between; align-items:center; padding:1rem 1.2rem; border-bottom:1px solid var(--border); }
.modal-header h3 { font-size:1.05rem; }
.modal-close { background:none; border:none; font-size:1.3rem; cursor:pointer; color:#999; }
.modal form { padding:1rem 1.2rem; }
.modal-footer { display:flex; justify-content:flex-end; gap:.5rem; padding-top:1rem; border-top:1px solid var(--border); margin-top:.5rem; }

/* ===== Toast ===== */
.toast { position:fixed; top:1.5rem; left:50%; transform:translateX(-50%); padding:.6rem 1.5rem; background:#333; color:#fff; border-radius:6px; font-size:.9rem; z-index:2000; opacity:0; transition:opacity .3s; pointer-events:none; }
.toast.show { opacity:1; }
.toast.success { background:var(--success); }
.toast.error { background:var(--danger); }

/* ===== 响应式 ===== */
@media (max-width:768px) {
  .sidebar { width:60px; }
  .sidebar-logo { font-size:0; text-align:center; }
  .sidebar-logo::before { content:'🔧'; font-size:1.2rem; }
  .nav-item span:not(.nav-icon) { display:none; }
  .nav-icon { margin-right:0; }
  .main-content { margin-left:60px; }
  .stats-grid { grid-template-columns:repeat(2,1fr); }
  .form-row { flex-direction:column; gap:0; }
}