/* ============================================================
   乒乓球约球平台 — 全局深蓝主题 (QQ游戏大厅风格)
   基础层：所有页面共用，页面特定样式写在各自 <style> 中
   ============================================================ */

*{margin:0;padding:0;box-sizing:border-box}
body{font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,sans-serif;background:#0a1628;color:#fff;min-height:100vh;padding-bottom:70px}
a{color:#90caf9;text-decoration:none}
input,select,textarea{font-family:inherit;font-size:14px}

/* ========== 顶部头部 ========== */
.hall-header{background:linear-gradient(135deg,#1a237e,#283593);padding:12px 16px;display:flex;align-items:center;justify-content:space-between;box-shadow:0 2px 8px rgba(0,0,0,.3)}
.hall-title{font-size:18px;font-weight:bold;display:flex;align-items:center;gap:8px}
.hall-title .icon{font-size:22px}
.hall-subtitle{font-size:11px;color:#9fa8da}
.user-info{display:flex;align-items:center;gap:8px;font-size:13px;cursor:pointer}
.user-avatar{width:28px;height:28px;border-radius:50%;background:#ff9800;display:flex;align-items:center;justify-content:center;font-weight:bold;font-size:12px;color:#fff}

/* 通用页面头部（带返回） */
.page-header{background:linear-gradient(135deg,#1a237e,#283593);padding:12px 16px;display:flex;align-items:center;justify-content:space-between;box-shadow:0 2px 8px rgba(0,0,0,.3)}
.page-header .back{font-size:20px;cursor:pointer;color:#fff;width:24px}
.page-header .title{font-size:16px;font-weight:bold;flex:1;text-align:center}
.page-header .right{width:24px;text-align:right;font-size:14px;cursor:pointer}

/* ========== 横幅标语 ========== */
.slogan{text-align:center;padding:10px;font-size:13px;color:#ffcc80;font-style:italic;background:rgba(255,152,0,.08)}

/* ========== 标签导航 ========== */
.district-nav{background:#152238;padding:8px 12px;display:flex;gap:6px;overflow-x:auto;scrollbar-width:none}
.district-nav::-webkit-scrollbar{display:none}
.district-tab{padding:5px 14px;border-radius:16px;font-size:13px;white-space:nowrap;cursor:pointer;transition:all .2s;background:#1e3a5f;color:#90caf9}
.district-tab.active{background:#2196f3;color:#fff;font-weight:bold}
.district-tab.disabled{color:#455a64;cursor:not-allowed;background:#1a2738}

.venue-tabs{background:#0f1b2d;padding:8px 12px;display:flex;gap:6px;overflow-x:auto;scrollbar-width:none;border-bottom:1px solid #1e3a5f}
.venue-tabs::-webkit-scrollbar{display:none}
.venue-tab{padding:5px 12px;border-radius:6px;font-size:12px;white-space:nowrap;cursor:pointer;background:#1a2738;color:#90caf9;display:flex;align-items:center;gap:4px}
.venue-tab.active{background:#1565c0;color:#fff}
.venue-tab .distance{font-size:10px;color:#81c784}

/* ========== 筛选栏 ========== */
.filter-bar{background:#0f1b2d;padding:8px 12px;display:flex;gap:8px;flex-wrap:wrap;border-bottom:1px solid #1e3a5f}
.filter-group{display:flex;gap:4px;align-items:center}
.filter-label{font-size:11px;color:#78909c;margin-right:2px}
.filter-chip{padding:3px 10px;border-radius:12px;font-size:11px;cursor:pointer;background:#1a2738;color:#90caf9;transition:all .2s}
.filter-chip.active{background:#ff9800;color:#fff;font-weight:bold}
.filter-chip.special{background:#e91e63;color:#fff}

/* ========== 卡片通用 ========== */
.card{background:linear-gradient(145deg,#1a2738,#152238);border-radius:8px;padding:14px;margin:10px 12px;border:1px solid #2a3f5f}
.card-title{font-size:15px;font-weight:bold;margin-bottom:10px;color:#fff;display:flex;align-items:center;gap:6px}
.card-subtitle{font-size:12px;color:#78909c;margin-bottom:8px}

/* ========== 表单 ========== */
.form-group{margin-bottom:14px}
.form-group label{display:block;font-size:13px;color:#90caf9;margin-bottom:6px;font-weight:bold}
.form-group input[type="text"],.form-group input[type="tel"],.form-group input[type="number"],.form-group input[type="datetime-local"],.form-group input[type="date"],.form-group input[type="time"],.form-group select,.form-group textarea{
  width:100%;padding:10px 12px;background:#0f1b2d;border:1px solid #2a3f5f;border-radius:6px;color:#fff;font-size:14px;outline:none;transition:border-color .2s
}
.form-group input:focus,.form-group select:focus,.form-group textarea:focus{border-color:#2196f3}
.form-group textarea{min-height:80px;resize:vertical}
.form-group .hint{font-size:11px;color:#546e7a;margin-top:4px}
.form-row{display:flex;gap:10px}
.form-row .form-group{flex:1}

/* 单选/多选标签组 */
.tag-group{display:flex;flex-wrap:wrap;gap:6px}
.tag-option{padding:6px 14px;border-radius:16px;font-size:12px;cursor:pointer;background:#1a2738;color:#90caf9;border:1px solid #2a3f5f;transition:all .2s}
.tag-option.active{background:#ff9800;color:#fff;border-color:#ff9800;font-weight:bold}
.tag-option.special.active{background:#e91e63;border-color:#e91e63}

/* 步进器 */
.stepper{display:flex;align-items:center;gap:16px}
.stepper button{width:36px;height:36px;border-radius:50%;border:none;background:#1e3a5f;color:#fff;font-size:18px;font-weight:bold;cursor:pointer;transition:all .2s}
.stepper button:hover{background:#2196f3}
.stepper .num{font-size:18px;font-weight:bold;min-width:30px;text-align:center}

/* ========== 按钮 ========== */
.btn{padding:12px 20px;border:none;border-radius:8px;font-size:14px;font-weight:bold;cursor:pointer;transition:all .2s;color:#fff;text-align:center;display:inline-block}
.btn:hover{opacity:.9;transform:translateY(-1px)}
.btn:active{transform:translateY(0)}
.btn-primary{background:linear-gradient(135deg,#2196f3,#1565c0)}
.btn-success{background:#4caf50}
.btn-warning{background:#ff9800}
.btn-danger{background:#f44336}
.btn-outline{background:transparent;border:1px solid #2a3f5f;color:#90caf9}
.btn-block{display:block;width:100%}
.btn-lg{padding:14px;font-size:16px}
.btn-sm{padding:6px 12px;font-size:12px;border-radius:6px}
.btn:disabled{opacity:.5;cursor:not-allowed;transform:none}

/* ========== 底部导航 ========== */
.tabbar{position:fixed;bottom:0;left:0;right:0;z-index:1000;background:linear-gradient(180deg,#1a237e,#0d1421);display:flex;box-shadow:0 -2px 10px rgba(0,0,0,.4);padding:6px 0}
.tabbar a{flex:1;display:flex;flex-direction:column;align-items:center;gap:2px;padding:6px 0;color:#78909c;font-size:10px;transition:color .2s}
.tabbar a .icon{font-size:20px}
.tabbar a.active{color:#ff9800}
.tabbar a.active .icon{transform:scale(1.1)}

/* 大厅底部三按钮 */
.hall-bottom{position:fixed;bottom:0;left:0;right:0;z-index:1000;background:linear-gradient(180deg,#1a237e,#0d1421);padding:12px 16px;display:flex;gap:10px;box-shadow:0 -2px 10px rgba(0,0,0,.4)}
.btn-quick{flex:1;background:#4caf50;color:#fff;padding:12px;border:none;border-radius:8px;font-size:14px;font-weight:bold;cursor:pointer}
.btn-create{flex:1;background:#ff9800;color:#fff;padding:12px;border:none;border-radius:8px;font-size:14px;font-weight:bold;cursor:pointer}
.btn-friend{flex:1;background:#2196f3;color:#fff;padding:12px;border:none;border-radius:8px;font-size:14px;font-weight:bold;cursor:pointer}

/* ========== 标签 ========== */
.tag{font-size:9px;padding:1px 5px;border-radius:8px;color:#fff;display:inline-block}
.tag.group2{background:#1565c0}
.tag.group3{background:#6a1b9a}
.tag.group4{background:#e65100}
.tag.special{background:#e91e63}
.tag.level{background:#1b5e20}
.tag.status-open{background:#1b5e20}
.tag.status-full{background:#b71c1c}
.tag.status-closed{background:#546e7a}

/* ========== 空台/状态 ========== */
.people{font-size:10px;font-weight:bold;padding:2px 7px;border-radius:10px;color:#fff;display:inline-block}
.people.ok{background:#1b5e20}
.people.full{background:#b71c1c}
.people.idle{background:#37474f}

/* ========== 列表项 ========== */
.list-item{background:linear-gradient(145deg,#1a2738,#152238);border-radius:8px;padding:12px 14px;margin:8px 12px;border:1px solid #2a3f5f;cursor:pointer;transition:all .2s}
.list-item:hover{border-color:#42a5f5;transform:translateY(-1px)}
.list-item .item-title{font-size:14px;font-weight:bold;margin-bottom:4px;color:#fff}
.list-item .item-meta{font-size:11px;color:#78909c;display:flex;gap:10px;flex-wrap:wrap;margin-top:4px}
.list-item .item-meta span{display:flex;align-items:center;gap:2px}

/* ========== 空状态 ========== */
.empty-state{text-align:center;padding:60px 20px;color:#546e7a}
.empty-state .icon{font-size:48px;margin-bottom:12px}
.empty-state .text{font-size:14px;margin-bottom:8px}
.empty-state .sub{font-size:12px}

/* ========== 加载 ========== */
.loading{text-align:center;padding:30px;color:#78909c;font-size:13px}
.loading::after{content:'...';animation:dots 1.5s steps(4,end) infinite}
@keyframes dots{0%,20%{content:''}40%{content:'.'}60%{content:'..'}80%,100%{content:'...'}}

/* ========== Toast ========== */
.toast{position:fixed;top:50%;left:50%;transform:translate(-50%,-50%);background:rgba(0,0,0,.85);color:#fff;padding:12px 24px;border-radius:8px;font-size:14px;z-index:9999;max-width:80%;text-align:center;animation:fadeIn .2s ease}
@keyframes fadeIn{from{opacity:0;transform:translate(-50%,-40%)}to{opacity:1;transform:translate(-50%,-50%)}}

/* ========== 模态框 ========== */
.modal-mask{position:fixed;top:0;left:0;right:0;bottom:0;background:rgba(0,0,0,.6);z-index:2000;display:flex;align-items:center;justify-content:center;padding:20px}
.modal-box{background:linear-gradient(145deg,#1a2738,#152238);border-radius:12px;padding:20px;max-width:400px;width:100%;border:1px solid #2a3f5f;max-height:80vh;overflow-y:auto}
.modal-box h3{font-size:16px;margin-bottom:14px;color:#fff}
.modal-box .modal-actions{display:flex;gap:10px;margin-top:16px}
.modal-box .modal-actions .btn{flex:1}

/* ========== 消息未读角标 ========== */
.badge{position:absolute;top:-2px;right:-2px;background:#f44336;color:#fff;font-size:9px;font-weight:bold;min-width:16px;height:16px;border-radius:8px;display:flex;align-items:center;justify-content:center;padding:0 4px}

/* ========== 球馆空台三色 ========== */
.empty-indicator{display:inline-flex;align-items:center;gap:4px;font-size:12px;font-weight:bold}
.empty-indicator .dot{width:8px;height:8px;border-radius:50%}
.empty-green .dot{background:#4caf50;box-shadow:0 0 6px #4caf50}
.empty-yellow .dot{background:#ff9800;box-shadow:0 0 6px #ff9800}
.empty-red .dot{background:#f44336;box-shadow:0 0 6px #f44336}

/* ========== 响应式 ========== */
@media(min-width:600px){
  .hall-content{max-width:880px;margin:0 auto}
  .card,.list-item{max-width:880px;margin-left:auto;margin-right:auto}
}