:root {
  --bg: #0f1c17;
  --panel: #172820;
  --ink: #e8f2ec;
  --muted: #9bb5a8;
  --accent: #3dba7a;
  --danger: #e07060;
  --warn: #d4a017;
  --line: #2a4036;
  --font: "Segoe UI", "Be Vietnam Pro", system-ui, sans-serif;
}
* { box-sizing: border-box; }
body {
  margin: 0; font-family: var(--font); background:
    radial-gradient(1200px 600px at 10% -10%, #1e3d30 0%, transparent 55%),
    radial-gradient(900px 500px at 100% 0%, #243528 0%, transparent 50%),
    var(--bg);
  color: var(--ink); min-height: 100vh;
}
a { color: var(--accent); }
.top {
  display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between;
  gap: 1rem; padding: 1rem 1.5rem; border-bottom: 1px solid var(--line);
  background: rgba(15, 28, 23, 0.85); backdrop-filter: blur(8px);
  position: sticky; top: 0;
}
.brand { font-weight: 700; font-size: 1.25rem; text-decoration: none; color: var(--ink); letter-spacing: 0.02em; }
nav { display: flex; flex-wrap: wrap; gap: 0.75rem; align-items: center; }
nav a { text-decoration: none; color: var(--muted); }
nav a:hover { color: var(--ink); }
main { max-width: 1100px; margin: 0 auto; padding: 1.5rem; }
footer { text-align: center; color: var(--muted); font-size: 0.85rem; padding: 2rem 1rem; }
.hero-panel h1 { margin: 0 0 0.35rem; font-size: 1.75rem; }
.hero-panel p { color: var(--muted); margin-top: 0; }
.metrics { width: 100%; border-collapse: collapse; margin: 1rem 0 2rem; }
.metrics th, .metrics td { border-bottom: 1px solid var(--line); padding: 0.55rem 0.4rem; text-align: left; font-size: 0.95rem; }
.metrics th { color: var(--muted); font-weight: 600; }
.alerts { list-style: none; padding: 0; }
.alerts li { background: var(--panel); border-left: 4px solid var(--warn); padding: 0.75rem 1rem; margin: 0.5rem 0; }
.sev-critical { border-left-color: var(--danger) !important; }
.sev-info { border-left-color: var(--accent) !important; }
button, .upload-form button {
  background: var(--accent); color: #062116; border: 0; padding: 0.55rem 1rem;
  font-weight: 600; cursor: pointer; border-radius: 4px;
}
button.danger { background: var(--danger); color: #1a0806; }
.inline { display: inline; margin-right: 0.5rem; }
.inline button { background: transparent; color: var(--muted); border: 1px solid var(--line); }
.error { color: var(--danger); }
.ok { color: var(--accent); }
.banner { background: #3a2e10; padding: 0.75rem 1rem; border-radius: 4px; }
.mono { font-family: ui-monospace, Consolas, monospace; font-size: 0.85rem; color: var(--muted); }
.batch { background: var(--panel); padding: 1rem 1.25rem; margin: 1rem 0; border-radius: 6px; border: 1px solid var(--line); }
.upload-form label, .period-form label { display: block; margin: 0.75rem 0; color: var(--muted); }
input[type=text], input[type=password], input:not([type=file]) {
  display: block; width: min(360px, 100%); margin-top: 0.35rem; padding: 0.5rem 0.65rem;
  background: #0c1612; border: 1px solid var(--line); color: var(--ink); border-radius: 4px;
}
.login-body { display: grid; place-items: center; min-height: 100vh; }
.login-card {
  width: min(420px, 92vw); background: var(--panel); padding: 2rem; border-radius: 8px;
  border: 1px solid var(--line); box-shadow: 0 20px 60px rgba(0,0,0,0.35);
}
.login-card .lede { color: var(--muted); }
em { color: var(--muted); font-style: normal; }