* { box-sizing: border-box; }
body { margin: 0; font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
       background: #0f1115; color: #e7e9ef; }
a { color: #6ea8fe; text-decoration: none; }
a:hover { text-decoration: underline; }
.muted { color: #8b91a1; }

.topbar { display: flex; align-items: center; justify-content: space-between;
          padding: 12px 22px; background: #181b22; border-bottom: 1px solid #262a33; }
.topbar .brand { font-weight: 700; color: #fff; font-size: 16px; }
.topbar nav a { margin-left: 18px; color: #c4c8d3; font-size: 14px; }
.topbar nav a.on { color: #fff; border-bottom: 2px solid #6ea8fe; padding-bottom: 4px; }

.container { max-width: 1100px; margin: 0 auto; padding: 24px 22px 60px; }
h1 { font-size: 22px; margin: 0 0 16px; }
h2 { font-size: 18px; margin: 24px 0 10px; }
h3 { font-size: 15px; margin: 16px 0 8px; color: #c4c8d3; }
p { line-height: 1.55; }

.card { background: #181b22; border: 1px solid #262a33; border-radius: 10px;
        padding: 16px 18px; margin-bottom: 14px; }
.row { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 12px; }

.btn { background: #2c5cff; color: #fff; border: 0; border-radius: 8px;
       padding: 9px 16px; font-size: 14px; cursor: pointer; }
.btn:hover { background: #4470ff; }
.btn-ghost { background: transparent; border: 1px solid #2f3543; color: #c4c8d3; }
.btn-danger { background: #c2384a; }

input[type=text], input[type=password], input[type=url], select, textarea {
  width: 100%; background: #0f1115; border: 1px solid #2f3543; color: #e7e9ef;
  padding: 9px 12px; border-radius: 8px; font: inherit;
}
label { font-size: 13px; color: #c4c8d3; display: block; margin: 8px 0 6px; }

.table { width: 100%; border-collapse: collapse; }
.table th, .table td { padding: 10px 8px; border-bottom: 1px solid #262a33; text-align: left; font-size: 14px; }
.table th { color: #8b91a1; font-weight: 600; font-size: 12px; text-transform: uppercase; letter-spacing: 0.04em; }

.pill { display: inline-block; padding: 2px 8px; border-radius: 999px; font-size: 11px;
        font-weight: 600; text-transform: uppercase; letter-spacing: 0.04em; }
.pill-good   { background: rgba(40,180,99,.15); color: #41d77c; }
.pill-warn   { background: rgba(250,170,0,.15);  color: #f7b62b; }
.pill-bad    { background: rgba(220,60,80,.15);  color: #ff6e7a; }
.pill-info   { background: rgba(110,168,254,.15); color: #6ea8fe; }

.flash { padding: 10px 14px; border-radius: 8px; margin-bottom: 14px; font-size: 14px; }
.flash-ok    { background: rgba(40,180,99,.12); color: #41d77c; border: 1px solid rgba(40,180,99,.4); }
.flash-err   { background: rgba(220,60,80,.12); color: #ff6e7a; border: 1px solid rgba(220,60,80,.4); }

.score { font-size: 40px; font-weight: 700; }
.score-good { color: #41d77c; }
.score-warn { color: #f7b62b; }
.score-bad  { color: #ff6e7a; }

.metric { background: #0f1115; border: 1px solid #262a33; border-radius: 8px; padding: 12px 14px; }
.metric .label { font-size: 11px; color: #8b91a1; text-transform: uppercase; letter-spacing: 0.05em; }
.metric .value { font-size: 22px; font-weight: 700; margin-top: 2px; }
.metric .delta { font-size: 12px; }
.delta-up   { color: #41d77c; }
.delta-down { color: #ff6e7a; }

.app-icon { width: 64px; height: 64px; border-radius: 12px; }
.app-head { display: flex; gap: 14px; align-items: center; }

.issue { padding: 12px 14px; border-radius: 8px; margin-bottom: 10px; border: 1px solid #262a33; background: #0f1115; }
.issue h4 { margin: 0 0 4px; font-size: 14px; }
.issue p { margin: 0; font-size: 13px; color: #c4c8d3; }
.issue.sev-error { border-left: 3px solid #ff6e7a; }
.issue.sev-warn  { border-left: 3px solid #f7b62b; }
.issue.sev-info  { border-left: 3px solid #6ea8fe; }

.login-card { max-width: 360px; margin: 80px auto; padding: 28px; }