/* ============================================================
   标签网 - 公共样式
   ============================================================ */
:root{
  --primary:#3a7afe;
  --primary-dark:#2b62d8;
  --primary-light:#eaf1ff;
  --success:#07c160;
  --warning:#ff9900;
  --danger:#ff4d4f;
  --text:#1f2329;
  --text-2:#4e5969;
  --text-3:#86909c;
  --border:#e5e6eb;
  --bg:#f7f8fa;
  --bg-2:#fff;
  --radius:8px;
  --shadow:0 2px 12px rgba(0,0,0,.06);
  --shadow-lg:0 8px 30px rgba(0,0,0,.1);
}
*{box-sizing:border-box;margin:0;padding:0}
html,body{height:100%}
body{
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;
  font-size:14px;color:var(--text);background:var(--bg);line-height:1.6;
  -webkit-font-smoothing:antialiased;
}
a{color:var(--primary);text-decoration:none}
a:hover{color:var(--primary-dark)}
img{max-width:100%;display:block}
button{font-family:inherit;cursor:pointer;border:none;background:none}
input,select,textarea{font-family:inherit;font-size:14px}
ul,ol{list-style:none}

/* 通用按钮 */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;
  padding:8px 18px;border-radius:var(--radius);font-size:14px;font-weight:500;
  border:1px solid var(--border);background:#fff;color:var(--text);transition:all .15s;cursor:pointer;
  white-space:nowrap;line-height:1.4}
.btn:hover{border-color:var(--primary);color:var(--primary)}
.btn-primary{background:var(--primary);border-color:var(--primary);color:#fff}
.btn-primary:hover{background:var(--primary-dark);border-color:var(--primary-dark);color:#fff}
.btn-success{background:var(--success);border-color:var(--success);color:#fff}
.btn-success:hover{background:#06ad55;color:#fff}
.btn-danger{background:var(--danger);border-color:var(--danger);color:#fff}
.btn-danger:hover{background:#e63942;color:#fff}
.btn-ghost{background:transparent;border-color:transparent;color:var(--text-2)}
.btn-ghost:hover{background:#f2f3f5;color:var(--text);border-color:transparent}
.btn-lg{padding:12px 28px;font-size:16px}
.btn-sm{padding:4px 12px;font-size:12px}
.btn-block{display:flex;width:100%}
.btn:disabled{opacity:.5;cursor:not-allowed}

/* 表单 */
.form-group{margin-bottom:18px}
.form-label{display:block;margin-bottom:6px;font-size:14px;color:var(--text-2);font-weight:500}
.form-label .req{color:var(--danger);margin-left:2px}
.form-input,.form-select,.form-textarea{
  width:100%;padding:10px 12px;border:1px solid var(--border);border-radius:var(--radius);
  background:#fff;color:var(--text);transition:border-color .15s;outline:none;
}
.form-input:focus,.form-select:focus,.form-textarea:focus{border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-light)}
.form-textarea{resize:vertical;min-height:80px}
.form-error{color:var(--danger);font-size:12px;margin-top:6px}
.form-hint{color:var(--text-3);font-size:12px;margin-top:6px}

/* 顶部导航 */
.site-header{background:#fff;border-bottom:1px solid var(--border);position:sticky;top:0;z-index:100}
.site-header-inner{max-width:1200px;margin:0 auto;padding:0 24px;height:60px;display:flex;align-items:center;gap:32px}
.site-logo{font-size:20px;font-weight:700;color:var(--primary);display:flex;align-items:center;gap:8px}
.site-logo:hover{color:var(--primary-dark)}
.site-logo-img{height:40px;width:auto;object-fit:contain}
.site-nav{display:flex;gap:4px;flex:1}
.site-nav a{padding:8px 14px;border-radius:6px;color:var(--text-2);font-weight:500;transition:all .15s}
.site-nav a:hover{background:var(--primary-light);color:var(--primary)}
.site-nav a.active{background:var(--primary-light);color:var(--primary)}
.header-actions{display:flex;align-items:center;gap:8px}
.header-user{display:flex;align-items:center;gap:8px;padding:6px 12px;border-radius:20px;background:var(--bg);cursor:pointer}
.header-user .avatar{width:28px;height:28px;border-radius:50%;background:var(--primary);color:#fff;display:flex;align-items:center;justify-content:center;font-size:13px;font-weight:600}
.header-user .name{font-size:13px;color:var(--text);max-width:120px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* 页脚 */
.site-footer{background:#2c2c2c;border-top:1px solid rgba(255,255,255,.06);padding:28px 24px;text-align:center;color:rgba(255,255,255,.55);font-size:13px;margin-top:40px}
.site-footer a{color:rgba(255,255,255,.75);margin:0 8px;transition:color .15s}
.site-footer a:hover{color:#fff}
.site-footer .mt-1{color:rgba(255,255,255,.4)}

/* 容器 */
.container{max-width:1200px;margin:0 auto;padding:24px}

/* 卡片 */
.card{background:#fff;border-radius:var(--radius);box-shadow:var(--shadow);padding:24px}
.card-title{font-size:16px;font-weight:600;margin-bottom:16px;color:var(--text)}

/* 提示框 */
.alert{padding:12px 16px;border-radius:var(--radius);margin-bottom:16px;font-size:13px}
.alert-info{background:#e8f3ff;color:#165dff;border:1px solid #bedaff}
.alert-success{background:#e8ffea;color:#00b42a;border:1px solid #cffce0}
.alert-warning{background:#fff7e8;color:#ff7d00;border:1px solid #ffe7ba}
.alert-danger{background:#ffece8;color:#f53f3f;border:1px solid #fdcdc5}

/* Toast */
.toast-container{position:fixed;top:80px;right:24px;z-index:9999;display:flex;flex-direction:column;gap:8px}
.toast{padding:12px 18px;border-radius:8px;background:#fff;box-shadow:var(--shadow-lg);font-size:14px;
  display:flex;align-items:center;gap:8px;animation:slideIn .25s ease;max-width:360px}
.toast.success{border-left:3px solid var(--success)}
.toast.error{border-left:3px solid var(--danger)}
.toast.info{border-left:3px solid var(--primary)}
.toast.warning{border-left:3px solid var(--warning,#faad14);background:#fffbe6;color:#613400}
@keyframes slideIn{from{transform:translateX(20px);opacity:0}to{transform:translateX(0);opacity:1}}

/* 模态框 */
.modal-mask{position:fixed;inset:0;background:rgba(0,0,0,.45);z-index:1000;display:none;align-items:center;justify-content:center;padding:20px}
.modal-mask.show{display:flex}
.modal{background:#fff;border-radius:12px;width:100%;max-width:480px;max-height:90vh;overflow:auto;box-shadow:var(--shadow-lg)}
.modal.modal-sm{max-width:340px}
.modal.modal-lg{max-width:720px}
.modal-header{padding:16px 20px;border-bottom:1px solid var(--border);display:flex;align-items:center;justify-content:space-between}
.modal-title{font-size:16px;font-weight:600}
.modal-close{font-size:22px;color:var(--text-3);cursor:pointer;line-height:1}
.modal-close:hover{color:var(--text)}
.modal-body{padding:20px}
.modal-sm .modal-header{padding:12px 16px}
.modal-sm .modal-body{padding:12px 16px}
.modal-sm .modal-footer{padding:10px 16px}
.modal-footer{padding:12px 20px;border-top:1px solid var(--border);display:flex;justify-content:flex-end;gap:8px}

/* 空状态 */
.empty{text-align:center;padding:48px 20px;color:var(--text-3)}
.empty .icon{font-size:48px;margin-bottom:12px}

/* 徽章 */
.badge{display:inline-block;padding:2px 8px;border-radius:10px;font-size:11px;font-weight:500;line-height:1.6}
.badge-primary{background:var(--primary-light);color:var(--primary)}
.badge-success{background:#e8ffea;color:var(--success)}
.badge-warning{background:#fff7e8;color:var(--warning)}
.badge-danger{background:#ffece8;color:var(--danger)}
.badge-default{background:#f2f3f5;color:var(--text-3)}

/* 工具类 */
.text-center{text-align:center}
.text-right{text-align:right}
.text-muted{color:var(--text-3)}
.text-primary{color:var(--primary)}
.text-danger{color:var(--danger)}
.text-success{color:var(--success)}
.text-sm{font-size:12px}
.text-lg{font-size:16px}
.text-xl{font-size:20px}
.font-bold{font-weight:700}
.mt-0{margin-top:0}.mt-1{margin-top:8px}.mt-2{margin-top:16px}.mt-3{margin-top:24px}.mt-4{margin-top:32px}
.mb-0{margin-bottom:0}.mb-1{margin-bottom:8px}.mb-2{margin-bottom:16px}.mb-3{margin-bottom:24px}.mb-4{margin-bottom:32px}
.flex{display:flex}.flex-1{flex:1}.items-center{align-items:center}.justify-between{justify-content:space-between}.justify-center{justify-content:center}
.gap-1{gap:8px}.gap-2{gap:16px}.gap-3{gap:24px}
.hidden{display:none}

/* 登录注册页 */
.auth-wrap{min-height:calc(100vh - 60px);display:flex;align-items:center;justify-content:center;padding:40px 20px;background:linear-gradient(135deg,#eaf1ff 0%,#f7f8fa 100%)}
.auth-card{width:100%;max-width:420px;background:#fff;border-radius:16px;box-shadow:var(--shadow-lg);padding:40px}
.auth-title{font-size:24px;font-weight:700;text-align:center;margin-bottom:8px}
.auth-subtitle{text-align:center;color:var(--text-3);margin-bottom:28px}
.auth-tabs{display:flex;background:var(--bg);border-radius:8px;padding:4px;margin-bottom:24px}
.auth-tabs a{flex:1;text-align:center;padding:8px;border-radius:6px;color:var(--text-2);font-weight:500;transition:all .15s}
.auth-tabs a.active{background:#fff;color:var(--primary);box-shadow:var(--shadow)}
.auth-footer{text-align:center;color:var(--text-3);font-size:13px;margin-top:20px}
.auth-footer a{margin:0 4px}

/* 响应式 */
@media(max-width:768px){
  .site-header-inner{padding:0 12px;gap:12px}
  .site-nav{display:none}
  .container{padding:12px}
  .auth-card{padding:24px}
}