:root {
    --border-radius: 18px;
    --border-radius-medium: 8px;
    --border-radius-large: 24px;
    --sidebar-width: 280px;
    --thinking-indicator-bg: rgba(255, 255, 255, 0.95);
}

.app-layout {
    display: flex;
    width: min(100%,var(--width-xl));
    margin: 0 auto;
    height: 100dvh;

    .sidebar {
        z-index: 99;
        width: var(--sidebar-width);
        background: var(--secondback);
        display: flex;
        flex-direction: column;
        position: fixed;
        height: 100%;
        padding: 16px;
        box-sizing: border-box;

        .sidebar-header {
            margin-bottom: 16px;

            .new-chat-btn {
                display: flex;
                align-items: center;
                justify-content: center;
                gap: 8px;
                width: 100%;
                padding: 12px 16px;
                background: var(--themecolor);
                color: white;
                border: none;
                border-radius: 99px;
                font-size: 0.95em;
                font-weight: 500;
                cursor: pointer;
                transition: background-color 0.2s ease;
                margin-bottom: 16px;

                &:hover {
                    background-color: var(--themecolorhover);
                }

                .material-icons-outlined {
                    font-size: 20px;
                }
            }

            .chat-search-container {
                position: relative;

                .search-icon {
                    position: absolute;
                    left: 12px;
                    top: 50%;
                    transform: translateY(-50%);
                    color: var(--subtext);
                    font-size: 20px;
                }

                #chat-search-input {
                    width: 100%;
                    padding: 10px 12px 10px 40px;
                    border-radius: 10px;
                    border: none;
                    color: var(--maintext);
                    background: var(--thirdback);
                    font-size: 0.9em;
                    box-sizing: border-box;

                    &:focus {
                        outline: none;
                        background: var(--fourthback);
                    }
                }
            }
        }

        .chat-list-container {
            flex-grow: 1;
            overflow-y: auto;

            .chat-list-item {
                display: flex;
                justify-content: space-between;
                align-items: center;
                padding: 10px 12px;
                margin-bottom: 6px;
                border-radius: 10px;
                cursor: pointer;
                font-size: 0.9em;
                color: var(--maintext);
                transition: .2s;
                position: relative;

                .chat-item-name {
                    white-space: nowrap;
                    overflow: hidden;
                    text-overflow: ellipsis;
                    flex-grow: 1;
                    margin-right: 8px;
                    padding: 4px 0;
                }

                .chat-item-name-edit {
                    flex-grow: 1;
                    margin-right: 8px;
                    padding: 5px 6px;
                    font-size: inherit;
                    border: none;
                    outline: none;
                    border-radius: 4px;
                    box-sizing: border-box;
                    background: none;
                    color: var(--maintext);
                }

                .chat-item-menu-trigger {
                    background: none;
                    border: none;
                    color: var(--subtext);
                    padding: 4px;
                    border-radius: 50%;
                    cursor: pointer;
                    display: flex;
                    align-items: center;
                    justify-content: center;
                    transition: opacity 0.2s ease, background-color 0.2s ease;

                    .material-icons-outlined {
                        font-size: 18px;
                    }
                }

                &:hover .chat-item-menu-trigger,
                &.menu-open .chat-item-menu-trigger {
                    opacity: 1;

                    &:hover {
                        background-color: var(--thirdback);
                    }
                }

                &.active {
                    background-color: var(--thirdback);
                    color: var(--maintext);
                    font-weight: 500;
                    opacity: 1;

                    .chat-item-menu-trigger {
                        color: var(--maintext);
                        opacity: 1;

                        &:hover {
                            background-color: var(--fifthback);
                        }
                    }

                    &:hover {
                        background-color: var(--fourthback);
                    }
                }

                .chat-item-dropdown-menu {
                    position: absolute;
                    top: 105%;
                    right: 0;
                    background-color: var(--thirdback);
                    color: var(--maintext);
                    border-radius: 10px;
                    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
                    padding: 8px 0;
                    z-index: 10;
                    min-width: 160px;

                    .dropdown-item {
                        display: block;
                        width: 100%;
                        padding: 8px 16px;
                        background: none;
                        border: none;
                        text-align: left;
                        font-size: 0.9em;
                        color: var(--maintext);
                        cursor: pointer;

                        &:hover {
                            background-color: var(--fourthback);
                        }

                        &.delete-chat:hover {
                            color: #f00;
                        }
                    }
                }
            }

            .no-chats-found {
                padding: 10px 12px;
                font-size: 0.9em;
                color: var(--subtext);
            }
        }

        .sidebar-footer {
            margin-top: auto;
            padding-top: 16px;
            border-top: 1px solid var(--line);

            .settings-btn {
                display: flex;
                align-items: center;
                gap: 8px;
                width: 100%;
                padding: 10px 12px;
                background-color: transparent;
                color: var(--subtext);
                border: none;
                border-radius: 10px;
                font-size: 0.9em;
                cursor: pointer;
                transition: background-color 0.2s ease, color 0.2s ease;

                &:hover {
                    background-color: var(--thirdback);
                    color: var(--maintext);
                }

                .material-icons-outlined {
                    font-size: 20px;
                }
            }
        }
    }

    .main-content {
        flex-grow: 1;
        display: flex;
        justify-content: flex-end;
        overflow-y: auto;
        box-sizing: border-box;

        .app-container {
            width: 100%;
            height: 100%;
            background-color: var(--firstback);
            display: flex;
            flex-direction: column;
            overflow: hidden;

            .app-header {
                display: flex;
                align-items: center;
                justify-content: space-between;
                padding: 10px 20px;
                background: var(--headerback);
                backdrop-filter: blur(10px);
                -webkit-backdrop-filter: blur(10px);

                h1 {
                    margin: 0;
                    font-size: 1.4em;
                    font-weight: 500;
                    color: var(--maintext);
                }

                label {
                    cursor: pointer;
                    background: var(--fourthback);
                    padding: 5px 10px;
                    border-radius: 5px;

                    &:hover {
                        background: var(--fifthback);
                    }
                }
            }

            .chat-container {
                flex-grow: 1;
                overflow-y: auto;
                padding: 20px 20px 30px;
                width: min(100%,var(--width-m));
                margin: 0 auto;

                .chat-log {
                    display: flex;
                    flex-direction: column;
                    gap: 12px;

                    .message {
                        padding: 10px 16px;
                        border-radius: var(--border-radius);
                        max-width: 80%;
                        line-height: 1.5;
                        word-wrap: break-word;
                        opacity: 0;
                        animation-duration: 0.6s;
                        animation-fill-mode: forwards;

                        &.user-message {
                            background-color: var(--themecolor);
                            color: #fff;
                            align-self: flex-end;
                            border-bottom-right-radius: 5px;
                            transform-origin: bottom right;
                            animation-name: messaggioEntrataUtente;
                            animation-timing-function: cubic-bezier(0.34, 1.56, 0.64, 1);
                        }

                        &.ai-message {
                            background-color: var(--fourthback);
                            color: var(--maintext);
                            align-self: flex-start;
                            border-bottom-left-radius: 5px;
                            transform-origin: bottom left;
                            animation-name: messaggioEntrataAI;
                            animation-timing-function: cubic-bezier(0.34, 1.56, 0.64, 1);

                            &.thinking-message {
                                background-color: var(--thinking-message-bg);
                                animation-name: fadeInSimple;
                                animation-duration: 0.3s;
                                opacity: 1;
                                padding: 10px 0;

                                .thinking-content-wrapper {
                                    display: flex;
                                    align-items: flex-start;
                                    gap: 10px;
                                }

                                .rainbow-spinner {
                                    width: 20px;
                                    height: 20px;
                                    border-width: 3px;
                                    border-style: solid;
                                    border-color: red;
                                    border-top-color: transparent;
                                    border-radius: 50%;
                                    animation: spin 0.8s linear infinite, rainbowHueRotate 4s linear infinite;
                                    flex-shrink: 0;
                                    margin-top: 2px;
                                }

                                .thinking-text-area {
                                    display: flex;
                                    flex-direction: column;

                                    .thinking-stage {
                                        font-size: 0.8em;
                                        color: var(--subtext);
                                        margin: 0 0 3px 0;
                                        font-weight: 500;
                                    }

                                    .thinking-detail {
                                        font-size: 0.9em;
                                        color: var(--maintext);
                                        margin: 0;
                                        min-height: 1.2em;
                                    }
                                }
                            }
                        }

                        .file-attachment {
                            display: inline-flex;
                            align-items: center;
                            background-color: var(--themecolorhover);
                            border: 1px solid #fff;
                            border-radius: var(--border-radius-medium);
                            padding: 6px 10px;
                            font-size: 0.9em;

                            .file-icon {
                                font-size: 18px;
                                margin-right: 6px;
                                color: #fff;
                            }

                            .file-extension {
                                font-weight: 500;
                            }
                        }

                        &.message-text-content+.file-attachment {
                            margin-top: 8px;
                        }
                    }
                }
            }

            .chat-input-footer {
                padding: 0px 20px 16px;
                margin: 0;
                background: transparent;
                width: min(100%,var(--width-m));
                margin: 0 auto;

                .file-preview-area {
                    display: flex;
                    align-items: center;
                    justify-content: space-between;
                    font-size: 0.9em;
                    background-color: var(--fourthback);
                    padding: 8px 12px;
                    border-radius: 10px;
                    margin-bottom: 8px;
                    color: var(--maintext);

                    .remove-file-button {
                        background: none;
                        border: none;
                        color: var(--maintext);
                        font-size: 2em;
                        cursor: pointer;
                        padding: 0 4px;

                        &:hover {
                            color: #f00;
                        }
                    }
                }

                .chat-input-area {
                    display: flex;
                    align-items: flex-end;
                    background-color: var(--fourthback);
                    border-radius: 28px;
                    padding: 4px;

                    .icon-button {
                        background: none;
                        border: none;
                        padding: 8px;
                        margin: 4px;
                        border-radius: 50%;
                        cursor: pointer;
                        color: var(--maintext);
                        display: flex;
                        align-items: center;
                        justify-content: center;

                        &:hover {
                            background-color: var(--fifthback);
                        }

                        .material-icons-outlined {
                            font-size: 24px;
                        }
                    }

                    .send-button-style {
                        background-color: var(--themecolor);
                        color: white;

                        &:hover {
                            background-color: var(--themecolorhover);
                        }
                    }

                    #user-input {
                        flex-grow: 1;
                        border: none;
                        padding: 10px;
                        resize: none;
                        font-size: 1rem;
                        font-family: var(--font-family);
                        background-color: transparent;
                        field-sizing: content;
                        min-height: 45px;
                        max-height: 130px;
                        overflow-y: auto;
                        line-height: 1.4;
                        outline: none;
                        color: var(--maintext);
                    }
                }

                &>p {
                    text-align: center;
                    margin-top: 5px;
                    font-size: 11px;
                    line-height: 1.2;
                    color: var(--subtext);
                }
            }
        }
    }
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

@keyframes rainbowHueRotate {

    0% {
        filter: hue-rotate(0deg);
    }

    100% {
        filter: hue-rotate(360deg);
    }
}

@keyframes messaggioEntrataUtente {
    from {
        opacity: 0;
        transform: scale(0.5) translate(30px, 30px);
    }

    to {
        opacity: 1;
        transform: scale(1) translate(0, 0);
    }
}

@keyframes messaggioEntrataAI {
    from {
        opacity: 0;
        transform: scale(0.5) translate(-30px, 30px);
    }

    to {
        opacity: 1;
        transform: scale(1) translate(0, 0);
    }
}

@keyframes fadeInSimple {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

.fade-in-from-bottom {
    animation-name: fadeInFromBottomKeyframes;
    animation-duration: 0.5s;
    animation-fill-mode: forwards;
}

@keyframes fadeInFromBottomKeyframes {
    0% {
        opacity: 0;
        transform: translateY(10px);
    }

    100% {
        opacity: 1;
        transform: translateY(0);
    }
}

input#sidebardisplay {
    display: none;

    &+.app-layout {
        .sidebar {
            transition: .2s;
            transform: translateX(-100%);
        }

        .main-content .app-container {
            transition: .2s;
        }

    }

    &:checked+.app-layout {
        .sidebar {
            transform: translateX(0);
        }

        .main-content .app-container {
            width: calc(100% - var(--sidebar-width));
        }
    }
}

@media screen and (max-width: 767px) {
input#sidebardisplay {
    &:checked+.app-layout {
        .sidebar {
            transform: translateX(0);
        }

        .main-content .app-container {
            width: 100%;
        }
    }
}
}

.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: #0004;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;

    &.active {
        opacity: 1;
        visibility: visible;
    }

    .modal-content {
        background-color: var(--thirdback);
        padding: 24px;
        border-radius: 15px;
        box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
        width: 90%;
        max-width: 500px;
        transform: scale(0.95);
        transition: transform 0.3s ease;

        .modal-overlay.active & {
            transform: scale(1);
        }

        .modal-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 20px;
            border-bottom: 1px solid var(--line);
            padding-bottom: 12px;

            h2 {
                margin: 0;
                font-size: 1.3em;
                font-weight: 500;
                color: var(--maintext);
            }

            .close-modal-btn {
                background: none;
                border: none;
                color: var(--subtext);
                cursor: pointer;
                padding: 4px;
                border-radius: 50%;
                display: flex;

                &:hover {
                    background-color: var(--fourthback);
                }

                .material-icons-outlined {
                    font-size: 24px;
                }
            }
        }

        .modal-body {
            .settings-item {
                margin-bottom: 16px;

                label {
                    display: block;
                    margin-bottom: 8px;
                    font-size: 0.9em;
                    color: var(--subtext);
                    font-weight: 500;
                }

                select {
                    width: 100%;
                    padding: 10px;
                    border-radius: 10px;
                    border: none;
                    background-color: var(--fifthback);
                    font-size: 0.95em;
                    color: var(--maintext);
                }
            }

            p#confirmation-message {
                font-size: 1em;
                line-height: 1.5;
                color: var(--maintext);
                margin-bottom: 0;
            }
        }

        &.confirmation-dialog .modal-footer {
            display: flex;
            justify-content: flex-end;
            gap: 10px;
            padding-top: 16px;
            margin-top: 20px;

            .button {
                padding: 8px 16px;
                border-radius: 10px;
                border: none;
                font-size: 0.9em;
                font-weight: 500;
                cursor: pointer;
                transition: background-color 0.2s ease, border-color 0.2s ease, color 0.2s ease;

                &.primary {
                    background-color: #f00;
                    color: white;

                    &:hover {
                        background-color: var(--accentcolor);
                    }
                }

                &.secondary {
                    background-color: var(--thirdback);
                    color: var(--subtext);

                    &:hover {
                        background-color: var(--fourthback);
                    }
                }
            }
        }
    }
}