:root {
    --primary-color: #00ADB5; --secondary-color: #6c757d; --success-color: #28a745;
    --danger-color: #dc3545; --light-gray: #f8f9fa; --dark-gray: #343a40; --border-color: #dee2e6;
}
html { scroll-behavior: smooth; }
body { font-family: 'Poppins', sans-serif; background-color: var(--light-gray); color: var(--dark-gray); margin: 0; padding: 2rem 1rem; }
.container { max-width: 700px; margin: auto; background: #fff; border-radius: 12px; box-shadow: 0 10px 25px rgba(0,0,0,0.1); overflow: hidden; }
.tabs { display: flex; background-color: #f1f1f1; }
.tab-link { flex: 1; padding: 15px; text-align: center; cursor: pointer; font-weight: 600; border: none; background: none; font-size: 16px; transition: background-color 0.3s, color 0.3s; }
.tab-link:hover { background-color: #ddd; }
.tab-link.active { background-color: var(--primary-color); color: white; }
.tab-content { padding: 30px; display: none; }
.tab-content.active { display: block; }
h2 { margin-top: 0; text-align: center; }
.form-group { margin-bottom: 20px; text-align: left; }
.form-group label { display: block; margin-bottom: 8px; font-weight: 500; }
.input-field { width: 100%; padding: 12px 15px; border: 1px solid var(--border-color); border-radius: 8px; box-sizing: border-box; font-size: 16px; transition: border-color 0.3s, box-shadow 0.3s; }
.input-field:focus { border-color: var(--primary-color); box-shadow: 0 0 0 3px rgba(0, 173, 181, 0.25); outline: none; }
.btn { display: block; width: 100%; padding: 14px; border: none; color: white; border-radius: 8px; font-size: 16px; font-weight: 600; cursor: pointer; text-decoration: none; text-align: center; transition: background-color 0.3s, transform 0.2s; }
.btn:hover { transform: translateY(-2px); }
.btn-primary { background-color: var(--primary-color); }
.btn-secondary { background-color: var(--secondary-color); }
.form-actions { margin-top: 10px; }
.back-link { width: 25%; margin-top: 10px; padding: 10px; font-size: 14px; }
.result-box { margin-top: 30px; padding: 20px; background-color: var(--light-gray); border-radius: 8px; border: 1px solid var(--border-color); word-break: break-all; cursor: pointer; }
.result-box h3 { margin-top: 0; }
.hash-output { font-family: 'Courier New', Courier, monospace; font-size: 1.1em; }
.verification-result { margin-top: 25px; padding: 15px; border-radius: 8px; font-weight: 600; font-size: 18px; }
.verification-result.valid { background-color: #d4edda; color: #155724; border: 1px solid #c3e6cb; }
.verification-result.invalid { background-color: #f8d7da; color: #721c24; border: 1px solid #f5c6cb; }
.cost-factor { display: flex; align-items: center; gap: 15px; }
.cost-factor input { max-width: 80px; }
.cost-factor span { font-size: 14px; color: #6c757d; }
.info-card { margin-top: 30px; padding: 30px; background-color: var(--light-gray); border-radius: 8px; }
.info-card h3 { margin-top: 0; }
.info-content { max-height: 250px; overflow-y: auto; padding-right: 15px; }

.password-generator-form label {
    display: flex;
    align-items: center;
    margin-bottom: 10px;
    font-weight: normal;
}
.password-generator-form input[type="checkbox"] {
    margin-right: 10px;
}
.password-length-control {
    display: flex;
    align-items: center;
    gap: 15px;
}
.password-length-control input[type="number"] {
    width: 80px;
    text-align: left;
}
.password-output-box {
    padding: 20px;
    background-color: var(--light-gray);
    border-radius: 8px;
    text-align: center;
    word-wrap: break-word;
    margin-top: 20px;
}
.verybigtext {
    font-size: 24px;
    font-weight: bold;
    margin-bottom: 15px;
}
.password-strength-table {
    width: 100%;
    margin-top: 15px;
    border-collapse: collapse;
}
.password-strength-table td {
    padding: 5px;
    font-size: 14px;
}
.strength-bar-container {
    width: 150px;
    height: 8px;
    background-color: #eeeeee;
    border-radius: 4px;
    overflow: hidden;
    display: inline-block;
}
.strength-bar {
    height: 100%;
}
.very-weak { background-color: #ff0000; width: 20%; }
.weak { background-color: #ff6600; width: 40%; }
.good { background-color: #66cc66; width: 60%; }
.strong { background-color: #33cc33; width: 80%; }
.very-strong { background-color: #009900; width: 100%; }