* {
  box-sizing: border-box;
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}
body {
  margin: 0;
  background: #f0f2f5;
  color: #333;
}
.container {
  max-width: 480px;
  margin: 40px auto;
  background: #fff;
  border-radius: 12px;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
  padding: 24px;
}
.tabs {
  display: flex;
  margin-bottom: 24px;
  border-bottom: 2px solid #eee;
}
.tab {
  flex: 1;
  text-align: center;
  padding: 12px 0;
  cursor: pointer;
  font-weight: 600;
  color: #666;
  border-bottom: 3px solid transparent;
  transition: all 0.3s ease;
  user-select: none;
}
.tab.active {
  color: rgb(5, 161, 5);
  border-color: #0daa15;
}

.card {
  padding: 20px 16px;
  background: #fafafa;
  border-radius: 10px;
  box-shadow: inset 0 0 8px #ddd;
  transition: opacity 0.3s ease;
}
.hidden {
  display: none;
}
h2 {
  margin-bottom: 20px;
  font-weight: 700;
  color: #222;
  text-align: center;
}
.form-group {
  margin-bottom: 16px;
}
label {
  display: block;
  font-weight: 600;
  margin-bottom: 6px;
  color: #444;
}
input[type='text'],
input[type='tel'],
input[type='number'],
select,
textarea {
  width: 100%;
  padding: 10px 12px;
  border-radius: 6px;
  border: 1.8px solid #ccc;
  font-size: 15px;
  resize: vertical;
  transition: border-color 0.3s ease;
}
input[type='text']:focus,
input[type='tel']:focus,
input[type='number']:focus,
select:focus,
textarea:focus {
  outline: none;
  border-color: #049e1e;
  background-color: #fff;
  box-shadow: 0 0 6px rgba(0, 123, 255, 0.3);
}
textarea {
  min-height: 60px;
}
.btn {
  width: 100%;
  padding: 14px;
  font-size: 17px;
  font-weight: 700;
  color: white;
  background-color: #06c45b;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  transition: background-color 0.3s ease;
  margin-top: 12px;
}
.btn:disabled {
  background-color: #a1cafc;
  cursor: not-allowed;
}
.btn:hover:not(:disabled) {
  background-color: #3fc561;
}

.status {
  margin-top: 16px;
  font-weight: 600;
  text-align: center;
  min-height: 24px;
}
.error {
  color: #d9534f;
}
.success {
  color: #28a745;
}
.spinner {
  margin: 0 auto;
  width: 24px;
  height: 24px;
  border: 3px solid #ccc;
  border-top: 3px solid #06c546;
  border-radius: 50%;
  animation: spin 1s linear infinite;
}
@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}