/* styles.css */
:root {
  --primary-color: #3498db;
  --secondary-color: #2980b9;
  --background-color: #f5f7fa;
  --card-color: #ffffff;
  --text-color: #333333;
  --error-color: #e74c3c;
  --success-color: #2ecc71;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

body {
  background-color: var(--background-color);
  color: var(--text-color);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.container {
  width: 100%;
  max-width: 800px;
  padding: 20px;
  margin: 0 auto;
}

header {
  text-align: center;
  margin-bottom: 30px;
}

header h1 {
  color: var(--primary-color);
  margin-bottom: 10px;
}

.card {
  background-color: var(--card-color);
  border-radius: 10px;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
  padding: 30px;
  margin-bottom: 30px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 15px;
  margin-bottom: 20px;
}

input {
  padding: 12px 15px;
  border: 1px solid #ddd;
  border-radius: 5px;
  font-size: 16px;
  transition: border-color 0.3s;
}

input:focus {
  border-color: var(--primary-color);
  outline: none;
}

button {
  background-color: var(--primary-color);
  color: white;
  border: none;
  border-radius: 5px;
  padding: 12px 20px;
  cursor: pointer;
  font-size: 16px;
  font-weight: 600;
  transition: background-color 0.3s;
}

button:hover {
  background-color: var(--secondary-color);
}

#result {
  margin-top: 25px;
  padding-top: 20px;
  border-top: 1px solid #eee;
}

#result h3 {
  margin-bottom: 15px;
  color: var(--primary-color);
}

.result-container {
  display: flex;
  gap: 10px;
}

.result-container input {
  flex-grow: 1;
}

.hidden {
  display: none;
}

.message {
  margin-top: 15px;
  padding: 10px 15px;
  border-radius: 5px;
}

.error {
  background-color: rgba(231, 76, 60, 0.1);
  color: var(--error-color);
  border: 1px solid var(--error-color);
}

.success {
  background-color: rgba(46, 204, 113, 0.1);
  color: var(--success-color);
  border: 1px solid var(--success-color);
}

footer {
  text-align: center;
  margin-top: auto;
  padding: 20px 0;
  color: #777;
}

.tabs {
  margin-top: 30px;
}

.tab-header {
  display: flex;
  border-bottom: 1px solid #ddd;
  margin-bottom: 20px;
}

.tab-btn {
  padding: 10px 20px;
  cursor: pointer;
  opacity: 0.7;
}

.tab-btn.active {
  opacity: 1;
  border-bottom: 3px solid var(--primary-color);
  font-weight: bold;
}

.tab-content {
  display: none;
}

.tab-content.active {
  display: block;
}

@media (max-width: 600px) {
  .container {
    padding: 15px;
  }

  .card {
    padding: 20px;
  }

  .result-container {
    flex-direction: column;
  }
}