* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: "Segoe UI", system-ui, sans-serif; background: #f5f5f5; color: #333; }
header { background: #1f4e79; color: white; padding: 1rem 2rem; }
header h1 a { color: white; text-decoration: none; }
main { max-width: 900px; margin: 2rem auto; padding: 0 1rem; }
.cards { display: grid; grid-template-columns: 1fr 1fr; gap: 1.5rem; margin-top: 1rem; }
.card { background: white; border-radius: 8px; padding: 2rem; text-decoration: none; color: #333; box-shadow: 0 2px 4px rgba(0,0,0,0.1); transition: box-shadow 0.2s; }
.card:hover { box-shadow: 0 4px 12px rgba(0,0,0,0.15); }
.card h2 { margin-bottom: 0.5rem; color: #1f4e79; }
.drop-zone { border: 2px dashed #aaa; border-radius: 8px; padding: 3rem; text-align: center; cursor: pointer; margin: 1rem 0; background: white; }
.drop-zone.drag-over { border-color: #1f4e79; background: #eef4fa; }
.drop-zone input[type="file"] { display: none; }
.file-list div { padding: 0.25rem 0; color: #555; }
button[type="submit"] { background: #1f4e79; color: white; border: none; padding: 0.75rem 2rem; border-radius: 4px; font-size: 1rem; cursor: pointer; margin-top: 1rem; }
button:disabled { background: #aaa; cursor: not-allowed; }
.errors { background: #fff3cd; border: 1px solid #ffc107; border-radius: 8px; padding: 1rem; margin: 1rem 0; }
.summary-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; margin: 1.5rem 0; }
.stat { background: white; border-radius: 8px; padding: 1.5rem; text-align: center; box-shadow: 0 2px 4px rgba(0,0,0,0.1); }
.stat-value { display: block; font-size: 2rem; font-weight: bold; color: #1f4e79; }
.stat-label { color: #666; }
.severity-table { width: 100%; border-collapse: collapse; background: white; border-radius: 8px; overflow: hidden; margin: 1rem 0; }
.severity-table th, .severity-table td { padding: 0.75rem 1rem; text-align: left; }
.severity-table thead { background: #1f4e79; color: white; }
.sev-badge { padding: 0.25rem 0.75rem; border-radius: 4px; color: white; font-weight: bold; }
.sev-critical { background: #8b0000; }
.sev-high { background: #ff0000; }
.sev-medium { background: #ffaa00; color: #333; }
.sev-low { background: #00b050; }
.bar { height: 1.25rem; border-radius: 3px; min-width: 2px; }
.bar-critical { background: #8b0000; }
.bar-high { background: #ff0000; }
.bar-medium { background: #ffaa00; }
.bar-low { background: #00b050; }
.host-list { list-style: none; columns: 3; margin: 1rem 0; }
.host-list li { padding: 0.25rem 0; }
.download-btn { display: inline-block; background: #1f4e79; color: white; padding: 0.75rem 2rem; border-radius: 4px; text-decoration: none; margin-top: 1rem; font-size: 1rem; }
.download-btn:hover { background: #163a5c; }