* { margin: 0; padding: 0; box-sizing: border-box; }
body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: #f0f2f5;
  color: #333;
  min-height: 100vh;
}
.container { max-width: 900px; margin: 0 auto; padding: 24px; }
.card {
  background: #fff;
  border-radius: 12px;
  padding: 24px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.06);
  margin-bottom: 16px;
}
h1 { font-size: 24px; margin-bottom: 8px; }
h2 { font-size: 18px; margin-bottom: 16px; }
.btn {
  padding: 10px 20px;
  border: none;
  border-radius: 6px;
  font-size: 14px;
  cursor: pointer;
  font-weight: 500;
}
.btn-primary { background: #4285f4; color: #fff; }
.btn-danger { background: #e53935; color: #fff; }
.btn-secondary { background: #e0e0e0; color: #333; }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }
.btn + .btn { margin-left: 8px; }
.hidden { display: none !important; }
.error { color: #e53935; font-size: 14px; margin-top: 8px; }
.success { color: #43a047; }
input[type="text"], input[type="password"], input[type="url"] {
  width: 100%; padding: 10px; border: 1px solid #ddd; border-radius: 6px; font-size: 14px;
}
.form-group { margin-bottom: 16px; }
.form-group label { display: block; margin-bottom: 6px; font-size: 14px; color: #666; }
.timer-bar {
  position: fixed; top: 0; left: 0; right: 0;
  background: #1a1a2e; color: #fff; padding: 12px 24px;
  display: flex; justify-content: space-between; align-items: center;
  z-index: 1000; font-size: 16px;
}
.timer-bar.warning { background: #e65100; }
.timer-bar.danger { background: #c62828; animation: pulse 1s infinite; }
@keyframes pulse { 50% { opacity: 0.8; } }
.progress-bar { height: 6px; background: #e0e0e0; border-radius: 3px; margin-top: 8px; }
.progress-bar .fill { height: 100%; background: #4285f4; border-radius: 3px; transition: width 0.3s; }
.step-indicator { display: flex; gap: 8px; margin-bottom: 24px; }
.step { flex: 1; text-align: center; padding: 8px; background: #eee; border-radius: 6px; font-size: 13px; }
.step.active { background: #4285f4; color: #fff; }
.step.done { background: #43a047; color: #fff; }