:root {
    --primary-color: #007bff; /* Ein freundliches Blau */
    --primary-color-dark: #0056b3;
    --background-light: #f4f7fa;
    --card-background: #ffffff;
    --text-color-dark: #333;
    --text-color-light: #666;
    --border-color: #e0e0e0;
    --shadow-light: rgba(0, 0, 0, 0.05);
    --shadow-medium: rgba(0, 0, 0, 0.1);

    --strength-weak: #dc3545; /* Rot */
    --strength-medium: #ffc107; /* Gelb */
    --strength-strong: #28a745; /* Grün */
}

/* Allgemeine Einstellungen */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--background-light);
    color: var(--text-color-dark);
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    padding: 20px;
    line-height: 1.6;
}

.container {
    background-color: var(--card-background);
    border-radius: 12px;
    box-shadow: 0 8px 20px var(--shadow-medium);
    padding: 30px;
    max-width: 500px;
    width: 100%;
    text-align: center;
}

h1 {
    font-size: 2rem;
    color: var(--primary-color-dark);
    margin-bottom: 25px;
    font-weight: 600;
}

/* Passwort Anzeige */
.password-display-group {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 25px;
    position: relative;
    flex-wrap: wrap; /* Für kleine Bildschirme */
}

.password-output {
    flex-grow: 1;
    padding: 12px 15px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-size: 1.1rem;
    font-weight: 500;
    background-color: var(--background-light);
    color: var(--text-color-dark);
    cursor: default;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    min-width: 150px; /* Mindestbreite für das Input-Feld */
}

/* Buttons */
.btn {
    padding: 12px 20px;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: background-color 0.2s ease, box-shadow 0.2s ease;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.btn-primary {
    background-color: var(--primary-color);
    color: white;
    margin-top: 20px;
}

.btn-primary:hover {
    background-color: var(--primary-color-dark);
    box-shadow: 0 4px 10px var(--shadow-light);
}

.btn-icon {
    background-color: var(--primary-color);
    color: white;
}

.btn-icon:hover {
    background-color: var(--primary-color-dark);
    box-shadow: 0 4px 10px var(--shadow-light);
}

.icon {
    width: 20px;
    height: 20px;
}

.copy-feedback {
    position: absolute;
    top: -30px; /* Über dem Button */
    right: 0;
    background-color: var(--primary-color);
    color: white;
    padding: 5px 10px;
    border-radius: 5px;
    font-size: 0.85rem;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, top 0.3s ease;
    white-space: nowrap;
    z-index: 10;
}

.copy-feedback.show {
    opacity: 1;
    visibility: visible;
    top: -45px; /* Leichte Animation nach oben */
}

/* Einstellungen */
.settings-group {
    background-color: var(--background-light);
    border-radius: 10px;
    padding: 20px;
    margin-bottom: 25px;
    text-align: left;
}

.setting-item {
    margin-bottom: 20px;
}

.setting-item:last-child {
    margin-bottom: 0;
}

.setting-label {
    font-weight: 500;
    color: var(--text-color-dark);
    margin-bottom: 10px;
    display: block;
}

/* Längen-Kontrolle */
.length-control {
    display: flex;
    align-items: center;
    gap: 15px;
}

.slider {
    flex-grow: 1;
    -webkit-appearance: none;
    width: 100%;
    height: 8px;
    background: var(--border-color);
    outline: none;
    border-radius: 5px;
    transition: opacity .2s;
}

.slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--primary-color);
    cursor: pointer;
    box-shadow: 0 2px 5px var(--shadow-light);
}

.slider::-moz-range-thumb {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--primary-color);
    cursor: pointer;
    box-shadow: 0 2px 5px var(--shadow-light);
}

.slider-value {
    font-weight: 600;
    font-size: 1.1rem;
    color: var(--primary-color-dark);
    width: 30px; /* Feste Breite für Wert */
    text-align: right;
}

/* Checkboxen */
.checkbox-group {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.checkbox-container {
    display: block;
    position: relative;
    padding-left: 30px;
    cursor: pointer;
    font-size: 1rem;
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;
}

.checkbox-container input {
    position: absolute;
    opacity: 0;
    cursor: pointer;
    height: 0;
    width: 0;
}

.checkmark {
    position: absolute;
    top: 2px; /* Vertikale Ausrichtung anpassen */
    left: 0;
    height: 20px;
    width: 20px;
    background-color: #eee;
    border-radius: 4px;
    border: 1px solid var(--border-color);
    transition: background-color 0.2s ease, border-color 0.2s ease;
}

.checkbox-container:hover input ~ .checkmark {
    background-color: #ccc;
}

.checkbox-container input:checked ~ .checkmark {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
}

.checkmark:after {
    content: "";
    position: absolute;
    display: none;
}

.checkbox-container input:checked ~ .checkmark:after {
    display: block;
}

.checkbox-container .checkmark:after {
    left: 7px;
    top: 3px;
    width: 5px;
    height: 10px;
    border: solid white;
    border-width: 0 3px 3px 0;
    -webkit-transform: rotate(45deg);
    -ms-transform: rotate(45deg);
    transform: rotate(45deg);
}

/* Passwortstärke */
.password-strength-group {
    margin-top: 25px;
    text-align: left;
}

.strength-bar-container {
    background-color: var(--border-color);
    height: 10px;
    border-radius: 5px;
    overflow: hidden;
    margin-top: 10px;
}

.strength-bar {
    height: 100%;
    width: 0%; /* Startwert */
    border-radius: 5px;
    transition: width 0.3s ease-in-out, background-color 0.3s ease-in-out;
}

.strength-bar.weak {
    background-color: var(--strength-weak);
}

.strength-bar.medium {
    background-color: var(--strength-medium);
}

.strength-bar.strong {
    background-color: var(--strength-strong);
}

.strength-text {
    display: block;
    margin-top: 8px;
    font-weight: 500;
    color: var(--text-color-light);
    font-size: 0.95rem;
}

/* Responsivität */
@media (max-width: 600px) {
    .container {
        padding: 20px;
        margin: 10px;
    }

    h1 {
        font-size: 1.6rem;
        margin-bottom: 20px;
    }

    .password-display-group {
        flex-direction: column;
        align-items: stretch;
        gap: 15px;
    }

    .password-output {
        font-size: 1rem;
        text-align: center;
    }

    .btn-icon {
        width: 100%;
    }

    .copy-feedback.show {
        top: -35px; /* Anpassung für kleinere Bildschirme */
    }

    .settings-group {
        padding: 15px;
    }

    .setting-label {
        font-size: 0.95rem;
    }

    .checkbox-container {
        font-size: 0.95rem;
    }

    .btn-primary {
        width: 100%;
    }
}