.password-requirements {
    margin-top: 8px;
    padding: 12px;
    background-color: #fafafa;
    border-left: 3px solid #2196F3;
    border-radius: 4px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.08);
    transition: all 0.3s ease;
}

    .password-requirements.all-valid {
        animation: fadeOutContainer 0.5s ease-in-out forwards;
        animation-delay: 0.5s;
    }

@keyframes fadeOutContainer {
    0% {
        opacity: 1;
        max-height: 300px;
        margin-top: 8px;
        padding: 12px;
    }

    100% {
        opacity: 0;
        max-height: 0;
        margin-top: 0;
        padding: 0;
        border: none;
    }
}

.requirements-title {
    margin: 0 0 8px 0;
    font-size: 12px;
    font-weight: 600;
    color: #616161;
    letter-spacing: 0.3px;
    transition: all 0.3s ease;
}

    .requirements-title.all-requirements-met {
        color: #388E3C;
        font-size: 13px;
    }

    .requirements-title .success-icon {
        color: #4CAF50;
        font-weight: bold;
        margin-right: 4px;
    }

.requirements-list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 6px 12px;
}

.requirement-item {
    display: flex;
    align-items: center;
    font-size: 11px;
    transition: all 0.2s cubic-bezier(0.4, 0.0, 0.2, 1);
    padding: 2px 0;
    opacity: 1;
    transform: scale(1);
}

    .requirement-item.hiding {
        animation: fadeOutItem 0.3s ease-in-out forwards;
    }

@keyframes fadeOutItem {
    0% {
        opacity: 1;
        transform: scale(1);
        max-height: 30px;
    }

    50% {
        opacity: 0.5;
        transform: scale(0.95);
    }

    100% {
        opacity: 0;
        transform: scale(0.8);
        max-height: 0;
        padding: 0;
        margin: 0;
    }
}

.requirement-icon {
    margin-right: 6px;
    min-width: 16px;
    height: 16px;
    display: inline-block;
    text-align: center;
    border: 1.5px solid #bdbdbd;
    border-radius: 2px;
    position: relative;
    background-color: #fff;
    transition: all 0.2s ease;
    flex-shrink: 0;
}

.requirement-item.pending .requirement-icon {
    border-color: #bdbdbd;
    background-color: #fff;
}

.requirement-item.valid .requirement-icon {
    border-color: #4CAF50;
    background-color: #4CAF50;
}

    .requirement-item.valid .requirement-icon::after {
        content: '';
        position: absolute;
        left: 4px;
        top: 2px;
        width: 4px;
        height: 8px;
        border: solid white;
        border-width: 0 1.5px 1.5px 0;
        transform: rotate(45deg);
    }

.requirement-text {
    color: #757575;
    line-height: 1.3;
    font-weight: 400;
}

.requirement-item.pending .requirement-text {
    color: #9e9e9e;
}

.requirement-item.valid .requirement-text {
    color: #388E3C;
    font-weight: 500;
}

.requirement-item.valid {
    animation: checkPulse 0.3s cubic-bezier(0.4, 0.0, 0.2, 1);
}

@keyframes checkPulse {
    0% {
        transform: scale(1);
    }

    50% {
        transform: scale(1.05);
    }

    100% {
        transform: scale(1);
    }
}

.input-field .password-requirements {
    position: relative;
    margin-top: 8px;
}

.password-requirements:hover {
    box-shadow: 0 2px 4px rgba(0,0,0,0.12);
}

@media only screen and (max-width: 992px) {
    .requirements-list {
        grid-template-columns: 1fr;
        gap: 4px;
    }

    .password-requirements {
        padding: 10px;
    }

    .requirements-title {
        font-size: 11px;
        margin-bottom: 6px;
    }

    .requirement-item {
        font-size: 10px;
    }

    .requirement-icon {
        min-width: 14px;
        height: 14px;
    }

    .requirement-item.valid .requirement-icon::after {
        left: 3px;
        top: 1px;
        width: 3px;
        height: 7px;
    }
}

@media only screen and (max-width: 600px) {
    .password-requirements {
        padding: 8px;
        margin-top: 6px;
    }

    .requirements-title {
        font-size: 10px;
        margin-bottom: 5px;
    }

    .requirement-icon {
        margin-right: 5px;
        min-width: 12px;
        height: 12px;
        border-width: 1px;
    }

    .requirement-item {
        font-size: 10px;
    }

        .requirement-item.valid .requirement-icon::after {
            left: 2px;
            top: 1px;
            width: 3px;
            height: 6px;
            border-width: 0 1px 1px 0;
        }
}

@media only screen and (min-width: 1200px) {
    .requirements-list {
        grid-template-columns: repeat(3, 1fr);
        gap: 6px 10px;
    }
}

.input-field input[type="password"]:focus ~ .password-requirements {
    border-left-color: #1976D2;
    box-shadow: 0 2px 5px rgba(33, 150, 243, 0.15);
}