:root {
    --primary-blue: #1a73e8;
    --dark-blue: #0d47a1;
    --light-blue: #e8f0fe;
    --white: #ffffff;
    --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--light-blue);
    margin: 0;
    padding: 20px;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    color: var(--dark-blue);
}

.container {
    background-color: var(--white);
    border-radius: 10px;
    box-shadow: var(--shadow);
    padding: 30px;
    width: 100%;
    max-width: 500px;
    text-align: center;
}

h1 {
    color: var(--dark-blue);
    margin-bottom: 30px;
}

.input-group {
    margin-bottom: 20px;
    text-align: left;
}

label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: var(--dark-blue);
}

input, select {
    width: 90%;
    padding: 12px;
    border: 2px solid #dfe1e5;
    border-radius: 6px;
    font-size: 16px;
    transition: border-color 0.3s;
}
    
    select {
    width: 100%;
    padding: 12px;
    border: 2px solid #dfe1e5;
    border-radius: 6px;
    font-size: 16px;
    transition: border-color 0.3s;
}

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

.result {
    background-color: #f8f9fa;
    padding: 15px;
    border-radius: 6px;
    margin-bottom: 20px;
    word-break: break-all;
    font-family: 'Courier New', monospace;
}

.btn {
    background-color: var(--primary-blue);
    color: white;
    border: none;
    padding: 12px 24px;
    border-radius: 6px;
    cursor: pointer;
    font-size: 16px;
    font-weight: 600;
    transition: background-color 0.3s;
    width: 100%;
}

.btn:hover {
    background-color: var(--dark-blue);
}

.options {
    display: flex;
    justify-content: space-between;
    margin-bottom: 20px;
}

.option-group {
    display: flex;
    align-items: center;
}

.option-group input {
    width: auto;
    margin-right: 8px;
}

.option-group label {
    margin-bottom: 0;
}

.copy-btn {
    background-color: var(--white);
    color: var(--primary-blue);
    border: 2px solid var(--primary-blue);
    padding: 8px 15px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 14px;
    margin-top: 10px;
    transition: all 0.3s;
}

.copy-btn:hover {
    background-color: var(--primary-blue);
    color: white;
}

.strength-meter {
    height: 5px;
    background-color: #e0e0e0;
    border-radius: 5px;
    margin-top: 10px;
    overflow: hidden;
}

.strength-bar {
    height: 100%;
    width: 0;
    transition: width 0.3s, background-color 0.3s;
}