:root{
  --bg:#0a0e17; --panel:#111827; --line:#1f2a3a;
  --primary:#00d4ff; --primary2:#7c3aed;
  --text:#e5edf5; --muted:#8b9bb4;
  --radius:14px;
}
*{box-sizing:border-box;margin:0;padding:0}
body{
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;
  background:
    radial-gradient(1000px 500px at 10% -10%, rgba(0,212,255,.18), transparent 60%),
    radial-gradient(800px 400px at 90% 0%, rgba(124,58,237,.18), transparent 55%),
    var(--bg);
  color:var(--text); line-height:1.6; min-height:100vh;
}
.container{max-width:1200px;margin:0 auto;padding:0 20px}
a{color:var(--primary);text-decoration:none}

/* ================= 通用样式 ================= */
.logo{font-size:20px;font-weight:800;letter-spacing:1px;color:#fff;white-space:nowrap;display:flex;align-items:center;}
.logo span{font-size:12px;color:var(--primary);margin-left:6px;letter-spacing:2px;}
.badge{background:var(--primary);color:#001018;border-radius:99px;padding:1px 7px;font-size:12px;font-weight:700; margin-left: 4px;}
.admin-link { color: #f59e0b !important; font-weight: 800; text-shadow: 0 0 10px rgba(245,158,11,0.5); }
.cart-link { background: rgba(0,212,255,0.1); border-radius: 20px; padding: 4px 10px;}

/* ================= 头部公共 ================= */
.site-header{
  position:sticky; top:0; z-index:50; backdrop-filter:blur(12px);
  background:rgba(10,14,23,.85); border-bottom:1px solid var(--line);
}

/* 电脑端头部 */
.desktop-header { display: block; }
.header-inner{display:flex;align-items:center;justify-content:center;height:68px;gap:40px;}
.nav{display:flex;gap:24px;align-items:center;white-space:nowrap;}
.nav a{color:var(--muted);font-size:14px;transition:.2s; padding: 4px 8px;}
.nav a:hover{color:var(--primary);}

/* 手机端头部（默认隐藏） */
.mobile-header { display: none; }

/* ================= 组件与内容样式 ================= */
main.container{padding-top:36px;padding-bottom:60px;min-height:60vh}
.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
@media(max-width:900px){.grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:560px){.grid{grid-template-columns:1fr}}
.card{background:linear-gradient(180deg,rgba(255,255,255,.04),rgba(255,255,255,.01));border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;transition:transform .25s,box-shadow .25s,border-color .25s;}
.card:hover{transform:translateY(-4px);border-color:rgba(0,212,255,.5);box-shadow:0 18px 40px rgba(0,212,255,.12)}
.card-img{width:100%;aspect-ratio:4/3;object-fit:cover;display:block;background:#0d1420}
.card-body{padding:16px}
.card-title{font-size:16px;font-weight:600;color:#fff;margin-bottom:8px;display:-webkit-box;-webkit-line-clamp:1;-webkit-box-orient:vertical;overflow:hidden}
.price{font-size:20px;font-weight:800;color:var(--primary);letter-spacing:.5px}
.price small{font-size:12px;color:var(--muted);font-weight:400;margin-left:4px}

.btn{display:inline-block;padding:10px 18px;border-radius:10px;border:none;cursor:pointer;font-size:14px;font-weight:600;transition:.2s;text-align:center}
.btn-primary{background:linear-gradient(135deg,var(--primary),#2ea3ff);color:#001018}
.btn-primary:hover{filter:brightness(1.12)}
.btn-ghost{background:transparent;border:1px solid var(--line);color:var(--text)}
.btn-ghost:hover{border-color:var(--primary);color:var(--primary)}
.btn-danger{background:#ef4444;color:#fff}
.btn-sm{padding:6px 12px;font-size:13px}
.btn-block{display:block;width:100%}

.form{max-width:420px;margin:0 auto;background:var(--panel);padding:28px;border:1px solid var(--line);border-radius:var(--radius)}
.form-row{margin-bottom:16px}
.form-row label{display:block;font-size:13px;color:var(--muted);margin-bottom:6px}
.form-row input,.form-row select,.form-row textarea{width:100%;padding:11px 13px;background:#0d1420;border:1px solid var(--line);border-radius:10px;color:var(--text);font-size:14px;outline:none}
.form-row input:focus,.form-row textarea:focus{border-color:var(--primary)}
.table{width:100%;border-collapse:collapse;font-size:14px}
.table th,.table td{padding:12px;border-bottom:1px solid var(--line);text-align:left}
.table th{color:var(--muted);font-weight:600;font-size:12px;text-transform:uppercase;letter-spacing:.5px}
.table-wrap{overflow-x:auto;background:var(--panel);border:1px solid var(--line);border-radius:var(--radius)}
.tag{font-size:12px;padding:3px 9px;border-radius:99px;font-weight:600}
.tag-paid{background:rgba(16,185,129,.15);color:#10b981}
.tag-unpaid{background:rgba(245,158,11,.15);color:#f59e0b}
.tag-cancelled{background:rgba(148,163,184,.15);color:#94a3b8}
h1.page-title{font-size:26px;margin-bottom:20px;color:#fff}
.section-title{font-size:18px;margin:30px 0 14px;color:#fff; border-left:3px solid var(--primary);padding-left:12px}
.site-footer{border-top:1px solid var(--line);padding:24px 0; color:var(--muted);font-size:13px;text-align:center}
.alert{padding:12px 16px;border-radius:10px;margin-bottom:18px;font-size:14px}
.alert-ok{background:rgba(16,185,129,.12);border:1px solid rgba(16,185,129,.4);color:#10b981}
.alert-err{background:rgba(239,68,68,.12);border:1px solid rgba(239,68,68,.4);color:#f87171}
.product-detail{display:grid;grid-template-columns:1fr 1fr;gap:36px;align-items:start}
@media(max-width:760px){.product-detail{grid-template-columns:1fr}}
.product-detail img{width:100%;border-radius:var(--radius);border:1px solid var(--line)}
.product-detail .info h1{font-size:28px;margin-bottom:14px}
.product-detail .price{font-size:32px;margin:18px 0}
.product-detail .desc{color:var(--muted);margin:18px 0;line-height:1.9}


/* ================= 📱 手机端彻底切换 ================= */
@media (max-width: 768px) {
  /* 电脑端隐藏 */
  .desktop-header { display: none !important; }
  
  /* 手机端显示并完美排版 */
  .mobile-header { display: block !important; }
  
  .mobile-nav-container {
    display: flex;
    flex-direction: column;
    padding: 15px 10px;
    gap: 12px;
  }
  
  /* 第一排：Logo和首页 */
  .mobile-top-row {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 20px;
    width: 100%;
  }
  .mobile-home-link {
    font-size: 15px;
    color: var(--muted);
  }
  
  /* 第二排：其余导航 */
  .mobile-bottom-row {
    display: flex;
    flex-wrap: wrap; /* 自动折行 */
    justify-content: center;
    align-items: center;
    gap: 12px 16px;
    width: 100%;
  }
  
  /* 强制不竖排 */
  .mobile-bottom-row a {
    font-size: 14px;
    color: var(--muted);
    white-space: nowrap;
    padding: 4px 8px;
  }
}
/* ================= 后台表格商品列强制单行省略 ================= */
.admin-goods-list {
    display: flex;
    flex-direction: column;
    gap: 4px; /* 每行商品之间的间距 */
}
.admin-goods-item {
    display: flex;
    align-items: center;
    justify-content: space-between; /* 名字在左，数量在右 */
    max-width: 250px; /* 限制最大宽度 */
}
.admin-goods-name {
    white-space: nowrap; /* 强制不换行 */
    overflow: hidden; /* 超出隐藏 */
    text-overflow: ellipsis; /* 变成省略号 */
    color: var(--muted);
    font-size: 13px;
}
.admin-goods-qty {
    color: var(--text);
    font-weight: bold;
    flex-shrink: 0; /* 数量绝对不被挤压 */
    margin-left: 8px;
}