* {

    margin: 0;

    padding: 0;

    box-sizing: border-box;

}



body {

    font-family: Arial, sans-serif;

    line-height: 1.6;

    display: flex;

    flex-direction: column;

    min-height: 100vh;

}



.container {

    display: flex;

    flex-direction: column;

    height: 100vh;

}



header {

    padding: 20px;

    background: #f4f4f4;

    flex-shrink: 0;

}



#searchInput {

    width: 100%;

    padding: 10px;

    font-size: 18px;

    border: 1px solid #ccc;

    border-radius: 5px;

}



main {

    flex-grow: 1;

    overflow-y: auto;

    padding: 20px;

    background: #fff;

}



.note {

    padding: 15px;

    margin-bottom: 10px;

    border: 1px solid #ccc;

    border-radius: 5px;

    background: #f9f9f9;

    display: flex;

    flex-direction: column;

    justify-content: space-between;

}



.note-header {

    display: flex;

    justify-content: space-between;

    align-items: center;

}



.note-content {

    flex-grow: 1;

    margin-top: 10px;

}



.note-dates {

    margin-top: 10px;

    font-size: 0.9em;

    color: #555;

}



button.pin-button {

    margin-left: 10px;

    background-color: #007bff;

    color: white;

    border: none;

    padding: 5px 10px;

    border-radius: 5px;

    cursor: pointer;

    flex-shrink: 0;

}



button.pin-button.unpin {

    background-color: #dc3545;

}



button.pin-button:focus {

    outline: 2px solid #0056b3;

}



footer {

    padding: 15px;

    background: #f1f1f1;

    flex-shrink: 0;

    max-height: 200px;

    overflow-y: auto;

    position: sticky;

    bottom: 0;

    border-top: 2px solid #ccc;

}



.pinned-note {

    padding: 15px;

    border: 1px solid #007bff;

    background: #e7f0ff;

    margin-bottom: 10px;

    display: flex;

    flex-direction: column;

    justify-content: space-between;

}



.pinned-note-header {

    display: flex;

    justify-content: space-between;

    align-items: center;

}



.pinned-note-content {

    margin-top: 10px;

}



.highlight {

    background-color: yellow;

}



@media (max-width: 600px) {

    #searchInput {

        font-size: 16px;

    }



    button.pin-button {

        padding: 5px 8px;

        font-size: 14px;

    }

}