@import url('https://fonts.googleapis.com/css2?family=Atkinson+Hyperlegible:ital,wght@0,400;0,700;1,400;1,700&display=swap');

$primary-color: #4a90e2;
$secondary-color: #f5f8fa;
$text-color: #333;
$light-text-color: #777;
$border-color: #e1e8ed;
$shadow-color: rgba(0, 0, 0, 0.1);
$transition: all 0.3s ease;

.chat-box {
    display: flex;
    flex-direction: column;
    height: 100%;
    background-color: #fff;
    font-family:
        'Atkinson Hyperlegible',
        -apple-system,
        BlinkMacSystemFont,
        'Segoe UI',
        Roboto,
        Helvetica,
        Arial,
        sans-serif;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 12px $shadow-color;

    .chat-header {
        background-color: $primary-color;
        color: white;
        padding: 15px;
        text-align: center;
        box-shadow: 0 2px 4px $shadow-color;
        height: fit-content;
        h2 {
            margin: 0;
            font-size: 1.3em;
            font-weight: 500;
        }
    }

    .chat-messages {
        flex-grow: 1;
        overflow-y: auto;
        padding: 20px;
        display: flex;
        flex-direction: column;

        &::-webkit-scrollbar {
            width: 6px;
        }

        &::-webkit-scrollbar-thumb {
            background-color: $border-color;
            border-radius: 3px;
        }
    }

    .chat-input {
        display: flex;
        padding: 20px;
        border-top: 1px solid $border-color;
        background-color: #fff;

        input {
            flex-grow: 1;
            padding: 12px 15px;
            border: 1px solid $border-color;
            border-radius: 24px;
            font-size: 15px;
            transition: $transition;

            &:focus {
                outline: none;
                border-color: $primary-color;
                box-shadow: 0 0 0 2px rgba($primary-color, 0.2);
            }
        }

        .submit-button {
            background-color: $primary-color;
            color: white;
            border: none;
            border-radius: 50%;
            width: 48px;
            height: 48px;
            margin-left: 10px;
            cursor: pointer;
            transition: $transition;
            display: flex;
            align-items: center;
            justify-content: center;

            &:hover {
                background-color: darken($primary-color, 10%);
            }

            &:disabled {
                background-color: $light-text-color;
                cursor: not-allowed;
            }

            .spinner {
                height: 24px;
                width: 24px;
                border: 3px solid rgba(255, 255, 255, 0.3);
                border-top: 3px solid #fff;
                border-radius: 50%;
                animation: spin 1s linear infinite;
            }
        }
    }
}

.message {
    max-width: 80%;
    margin-bottom: 20px;
    padding: 16px 20px;
    border-radius: 18px;
    font-size: 15px;
    line-height: 1.5;
    box-shadow: 0 2px 4px $shadow-color;

    &.user {
        align-self: flex-end;
        background-color: $primary-color;
        color: white;
        border-bottom-right-radius: 4px;
    }

    &.chatbot {
        align-self: flex-start;
        background-color: $secondary-color;
        color: $text-color;
        border-bottom-left-radius: 4px;
    }

    .toggle-info {
        background-color: transparent;
        color: $primary-color;
        border: 1px solid $primary-color;
        width: 100%;
        height: fit-content;
        border-radius: 8px;
        padding: 10px 16px;
        font-size: 14px;
        cursor: pointer;
        transition: $transition;
        margin-top: 10px;

        &:hover {
            background-color: rgba($primary-color, 0.1);
        }
    }
}

.follow-up-questions {
    margin-top: 15px;

    h4 {
        font-size: 15px;
        font-weight: 600;
        margin-bottom: 10px;
    }

    .questions-list {
        display: flex;
        flex-direction: column;
        gap: 10px;
    }

    .follow-up-button {
        background-color: #fff;
        color: $primary-color;
        border: 1px solid $primary-color;
        border-radius: 8px;
        padding: 10px 16px;
        font-size: 14px;
        cursor: pointer;
        transition: $transition;
        text-align: left;
        white-space: normal;
        word-wrap: break-word;
        width: 100%;
        height: fit-content;

        &:hover {
            background-color: $primary-color;
            color: #fff;
        }
    }
}

.citation-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background-color: rgba(0, 0, 0, 0.1);
    color: $text-color;
    font-size: 12px;
    font-weight: bold;
    margin-left: 5px;
    cursor: pointer;
    transition: $transition;
    vertical-align: middle;

    &:hover {
        background-color: rgba(0, 0, 0, 0.2);
    }
}

.uploading-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(255, 255, 255, 0.8);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
}

@keyframes spin {
    0% {
        transform: rotate(0deg);
    }
    100% {
        transform: rotate(360deg);
    }
}

@media (max-width: 768px) {
    .chat-box {
        border-radius: 0;
    }

    .message {
        max-width: 90%;
    }
}