body { font-family: 'Segoe UI', system-ui, sans-serif; background: #0f172a; color: #e2e8f0; margin: 0; padding: 20px; }
.container { max-width: 600px; margin: 0 auto; background: #1e293b; padding: 30px; border-radius: 8px; box-shadow: 0 4px 6px rgba(0,0,0,0.3); }
input, select { width: 100%; padding: 10px; margin: 8px 0 20px; border: 1px solid #475569; background: #334155; color: white; border-radius: 4px; box-sizing: border-box; }
button { background: #3b82f6; color: white; border: none; padding: 12px 20px; border-radius: 4px; cursor: pointer; font-weight: bold; margin-right: 10px;}
button:hover { background: #2563eb; }
button.danger { background: #ef4444; }
button.danger:hover { background: #dc2626; }
.progress-bar { width: 100%; background: #475569; border-radius: 4px; overflow: hidden; }
.progress-fill { height: 20px; background: #10b981; width: 0%; transition: width 0.2s; }
.error { color: #ef4444; }
.header { display: flex; justify-content: space-between; align-items: center; border-bottom: 1px solid #475569; padding-bottom: 10px; margin-bottom: 20px; }
a { color: #60a5fa; text-decoration: none; }