* { margin:0; padding:0; box-sizing:border-box; }
html { font-size:14px; }
body {
    font-family: "Microsoft YaHei", "PingFang SC", -apple-system, sans-serif;
    background: #f0f2f5;
    color: #333;
    min-height:100vh;
}
a { color:#1890ff; text-decoration:none; }
a:hover { color:#40a9ff; }
.text-center { text-align:center; }
.text-right { text-align:right; }
.text-muted { color:#999; }
.text-danger { color:#ff4d4f; }
.text-success { color:#52c41a; }
.required { color:#ff4d4f; }

/* Navbar */
.navbar {
    display:flex; align-items:center; justify-content:space-between;
    background:#1890ff; color:#fff; padding:0 32px; height:56px;
    position:sticky; top:0; z-index:100;
}
.nav-left { display:flex; align-items:center; gap:24px; }
.nav-brand { font-size:16px; font-weight:bold; letter-spacing:1px; }
.nav-center { display:flex; gap:4px; }
.nav-link {
    color:rgba(255,255,255,0.85); padding:8px 16px; border-radius:6px;
    font-size:14px; transition:background 0.2s;
}
.nav-link:hover { background:rgba(255,255,255,0.15); color:#fff; }
.nav-right { display:flex; align-items:center; gap:12px; }
.nav-user { color:rgba(255,255,255,0.9); font-size:13px; }

/* Container */
.container { max-width:1100px; margin:0 auto; padding:24px 20px; }

/* Page header */
.page-header {
    display:flex; align-items:center; justify-content:space-between;
    margin-bottom:20px;
}
.page-header h2 { font-size:20px; font-weight:500; color:#1a1a1a; }

/* Card */
.card {
    background:#fff; border-radius:8px; padding:24px;
    box-shadow:0 1px 3px rgba(0,0,0,0.08);
}

/* Form */
.form-row { display:flex; gap:20px; }
.form-row .form-group { flex:1; }
.form-group { margin-bottom:18px; }
.form-group label { display:block; margin-bottom:6px; font-size:13px; color:#555; font-weight:500; }
.form-input {
    width:100%; padding:8px 12px; border:1px solid #d9d9d9; border-radius:6px;
    font-size:14px; font-family:inherit; color:#333; transition:border-color 0.2s;
    background:#fff;
}
.form-input:focus { outline:none; border-color:#1890ff; box-shadow:0 0 0 2px rgba(24,144,255,0.15); }
textarea.form-input { resize:vertical; }
select.form-input { cursor:pointer; }
.form-actions { display:flex; gap:12px; margin-top:8px; }

/* Upload area */
.upload-area {
    border:2px dashed #d9d9d9; border-radius:8px; padding:32px;
    text-align:center; cursor:pointer; transition:all 0.2s;
    color:#999; font-size:13px;
}
.upload-area:hover { border-color:#1890ff; color:#1890ff; }

/* Buttons */
.btn {
    display:inline-block; padding:8px 20px; border-radius:6px;
    font-size:14px; cursor:pointer; border:1px solid transparent;
    font-family:inherit; text-decoration:none; transition:all 0.2s;
    line-height:1.5;
}
.btn-sm { padding:4px 12px; font-size:12px; }
.btn-block { display:block; width:100%; }
.btn-primary { background:#1890ff; color:#fff; border-color:#1890ff; }
.btn-primary:hover { background:#40a9ff; border-color:#40a9ff; }
.btn-success { background:#52c41a; color:#fff; border-color:#52c41a; }
.btn-success:hover { background:#73d13d; }
.btn-danger { background:#ff4d4f; color:#fff; border-color:#ff4d4f; }
.btn-danger:hover { background:#ff7875; }
.btn-outline { background:#fff; color:#555; border-color:#d9d9d9; }
.btn-outline:hover { color:#1890ff; border-color:#1890ff; }
.btn-danger-outline { background:#fff; color:#ff4d4f; border-color:#ffccc7; }
.btn-danger-outline:hover { color:#fff; background:#ff4d4f; border-color:#ff4d4f; }
.btn:disabled { opacity:0.6; cursor:not-allowed; }

/* Table */
.table { width:100%; border-collapse:collapse; }
.table th, .table td {
    padding:10px 12px; text-align:left; border-bottom:1px solid #f0f0f0;
    font-size:13px;
}
.table th { background:#fafafa; font-weight:500; color:#555; white-space:nowrap; }
.table tbody tr:hover { background:#f5f8ff; }
.desc-cell { max-width:160px; overflow:hidden; text-overflow:ellipsis; white-space:nowrap; }
.img-link { color:#1890ff; font-size:12px; }

/* Badges */
.badge {
    display:inline-block; padding:2px 10px; border-radius:10px;
    font-size:12px; font-weight:500;
}
.badge-warning { background:#fff7e6; color:#fa8c16; }
.badge-success { background:#f6ffed; color:#52c41a; }
.badge-danger { background:#fff1f0; color:#ff4d4f; }

/* Alerts */
.alert { padding:10px 16px; border-radius:6px; font-size:13px; margin-bottom:12px; }
.alert-danger { background:#fff1f0; color:#ff4d4f; border:1px solid #ffccc7; }
.alert-success { background:#f6ffed; color:#52c41a; border:1px solid #b7eb8f; }
.alert-warning { background:#fff7e6; color:#fa8c16; border:1px solid #ffd591; }

/* Filter bar */
.filter-bar { display:flex; gap:8px; margin-bottom:16px; }
.filter-btn.active { background:#1890ff; color:#fff; border-color:#1890ff; }

/* Login page */
.login-wrapper {
    min-height:100vh; display:flex; align-items:center; justify-content:center;
    background:linear-gradient(135deg, #e6f0fa 0%, #f0e6f6 100%);
}
.login-card {
    background:#fff; border-radius:12px; padding:40px; width:380px;
    box-shadow:0 4px 24px rgba(0,0,0,0.1);
}
.login-title { text-align:center; font-size:22px; color:#1a1a1a; margin-bottom:8px; font-weight:500; }
.login-subtitle { text-align:center; color:#999; font-size:14px; margin-bottom:32px; }
.login-hint {
    margin-top:24px; padding-top:16px; border-top:1px solid #f0f0f0;
    text-align:center; font-size:12px; color:#bbb; line-height:1.8;
}

/* Modal */
.modal {
    display:none; position:fixed; top:0; left:0; width:100%; height:100%;
    background:rgba(0,0,0,0.45); z-index:200;
    align-items:center; justify-content:center;
}
.modal-content {
    background:#fff; border-radius:12px; padding:28px; width:500px;
    max-width:90vw; max-height:85vh; overflow-y:auto;
    position:relative;
}
.modal-content h3 { font-size:16px; font-weight:500; margin-bottom:16px; }
.modal-close {
    position:absolute; top:12px; right:16px; font-size:22px;
    cursor:pointer; color:#999; line-height:1;
}
.modal-close:hover { color:#333; }

/* Export card */
.export-card {
    background:#fafbfc; border:1px solid #e8e8e8; border-radius:10px;
    padding:32px 24px; width:300px; cursor:pointer; transition:all 0.2s;
    text-align:center;
}
.export-card:hover { border-color:#1890ff; box-shadow:0 2px 12px rgba(24,144,255,0.12); }
.export-card h3 { font-size:16px; font-weight:500; margin:12px 0 8px; color:#333; }
.export-card p { font-size:13px; color:#888; margin-bottom:16px; line-height:1.6; }
.export-icon { margin-bottom:8px; }

@media (max-width:768px) {
    .navbar { padding:0 16px; }
    .nav-center { gap:0; }
    .nav-link { padding:6px 10px; font-size:12px; }
    .container { padding:16px 10px; }
    .form-row { flex-direction:column; gap:0; }
    .page-header { flex-direction:column; align-items:flex-start; gap:12px; }
    .export-card { width:100%; }
}