/* WitFrame BBS 安装向导 —— 现代化响应式 UI */
:root{
  --bg:#0f1226;
  --bg2:#171a36;
  --card:#fff;
  --brand1:#6d5cff;
  --brand2:#00c2ff;
  --ok:#16a34a;
  --bad:#dc2626;
  --muted:#6b7280;
  --line:#e5e7eb;
}
*{box-sizing:border-box;margin:0;padding:0}
body{
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;
  background:linear-gradient(135deg,#1a1d3a 0%,#0f1226 100%);
  min-height:100vh;color:#1f2937;line-height:1.6;
}
.wrap{display:flex;max-width:1080px;margin:40px auto;min-height:640px;border-radius:18px;overflow:hidden;box-shadow:0 30px 80px rgba(0,0,0,.4)}
.side{
  width:280px;flex-shrink:0;padding:36px 28px;color:#fff;
  background:linear-gradient(160deg,#23264d 0%,#171a36 100%);
  display:flex;flex-direction:column;
}
.logo{
  width:52px;height:52px;border-radius:14px;font-size:26px;font-weight:700;color:#fff;
  display:flex;align-items:center;justify-content:center;margin-bottom:14px;
  background:linear-gradient(135deg,var(--brand1),var(--brand2));
  box-shadow:0 8px 20px rgba(109,92,255,.4);
}
.brand h1{font-size:20px;font-weight:700}
.brand sup{font-size:10px;opacity:.7}
.brand p{font-size:12px;opacity:.65;margin-top:4px}
.steps{list-style:none;margin-top:40px;flex:1}
.steps li{
  display:flex;align-items:center;gap:12px;padding:11px 10px;border-radius:10px;
  color:rgba(255,255,255,.5);font-size:14px;
}
.steps i{
  width:26px;height:26px;border-radius:50%;font-style:normal;font-size:12px;
  display:flex;align-items:center;justify-content:center;background:rgba(255,255,255,.1);
}
.steps li.on{background:rgba(255,255,255,.08);color:#fff}
.steps li.on i{background:linear-gradient(135deg,var(--brand1),var(--brand2))}
.steps li.done{color:#86efac}
.steps li.done i{background:#16a34a}
.side-foot{font-size:11px;opacity:.45;margin-top:20px}

.main{flex:1;background:#f7f8fc;padding:44px 48px}
.card{background:var(--card);border-radius:14px;padding:36px;box-shadow:0 4px 20px rgba(0,0,0,.05)}
.card h2{font-size:24px;margin-bottom:8px}
.card .muted{color:var(--muted);font-size:14px;margin-bottom:18px;display:block}
.card h3.sub{font-size:15px;margin:24px 0 12px;padding-top:18px;border-top:1px dashed var(--line);color:#374151}

.feature-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin:22px 0}
.feat{background:#f5f6ff;border-radius:10px;padding:16px}
.feat b{display:block;color:var(--brand1);font-size:15px;margin-bottom:4px}
.feat span{font-size:13px;color:var(--muted)}

.agree{display:flex;align-items:center;gap:8px;font-size:14px;margin-top:18px}
.agree a{color:var(--brand1)}

.bar{display:flex;gap:12px;align-items:center;margin-top:28px}
.btn{
  display:inline-block;padding:11px 22px;border-radius:9px;font-size:14px;cursor:pointer;
  border:1px solid var(--line);background:#fff;color:#374151;text-decoration:none;
  transition:all .15s;
}
.btn:hover{border-color:var(--brand1);color:var(--brand1)}
.btn.primary{background:linear-gradient(135deg,var(--brand1),var(--brand2));color:#fff;border:none;box-shadow:0 6px 16px rgba(109,92,255,.35)}
.btn.primary:hover{transform:translateY(-1px);color:#fff;opacity:.95}
.btn.big{padding:13px 30px;font-size:15px}
.err{color:var(--bad);font-size:13px;margin-left:8px}

table.env{width:100%;border-collapse:collapse;margin-top:14px;font-size:14px}
table.env th,table.env td{padding:11px 10px;border-bottom:1px solid var(--line);text-align:left}
table.env th{font-weight:600;color:var(--muted);font-size:12px;text-transform:uppercase}
tr.pass .dot{color:var(--ok);font-weight:700}
tr.fail .dot{color:var(--bad);font-weight:700}
.req{color:var(--bad)}

form label{display:block;font-size:13px;color:#374151;margin:12px 0 4px}
form input,form select{
  width:100%;padding:11px 12px;border:1px solid var(--line);border-radius:8px;
  font-size:14px;outline:none;transition:border .15s;background:#fff;
}
form input:focus,form select:focus{border-color:var(--brand1);box-shadow:0 0 0 3px rgba(109,92,255,.12)}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:0 16px}

.db-test{margin-top:14px;font-size:13px;min-height:20px}
.db-test.ok{color:var(--ok)}
.db-test.bad{color:var(--bad)}

.err-box{background:#fef2f2;color:var(--bad);padding:12px 14px;border-radius:8px;margin-bottom:16px;font-size:14px}

.center{text-align:center}
.center-bar{justify-content:center}
.done{
  width:72px;height:72px;border-radius:50%;margin:0 auto 18px;
  background:linear-gradient(135deg,#22c55e,#16a34a);color:#fff;font-size:38px;
  display:flex;align-items:center;justify-content:center;box-shadow:0 10px 24px rgba(34,197,94,.4);
}
.icon-warn{font-size:40px;color:#f59e0b;margin-bottom:10px}
code{background:#f3f4f6;padding:2px 6px;border-radius:4px;font-size:12px}

@media(max-width:820px){
  .wrap{flex-direction:column;margin:0;border-radius:0}
  .side{width:100%;padding:22px}
  .steps{display:flex;flex-wrap:wrap;gap:6px;margin-top:18px}
  .steps li{font-size:12px;padding:6px}
  .main{padding:24px 18px}
  .grid2{grid-template-columns:1fr}
}