* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --bgmain: linear-gradient(180deg, #EBF2FC 0%, #EEF8F9, 100%);

    --card-bg: hsl(200, 60%, 99%);
    --card-outline: hsl(0, 0%, 78%);
    --header-text: hsl(227, 75%, 14%);
    --description-text: hsl(226, 11%, 37%);

    --button-bg: hsl(200, 60%, 99%);
    --button-text: hsl(225, 23%, 24%);
    --button-text-hover: hsl(200, 60%, 99%);
    --button-hover: hsl(0, 0%, 93%);
    --button-outline: hsl(0, 0%, 78%);

    --theme-button-bg: hsla(240, 3%, 94%, 0.70);
    --theme-button-hover: hsl(226, 11%, 37%);

    --toggle-inactive: hsl(0, 0%, 78%);

    --filter-btn-hover: hsl(3, 86%, 64%);
    --toggle-active: hsl(3, 71%, 56%);
    --toggle-focus: hsl(3, 71%, 56%);
    --remove-button-hover: hsl(3, 77%, 44%);
}

[data-theme="dark"] {
    --bgmain: linear-gradient(180deg, #1E1E2F 0%, #1E1E2F 100%);

    --card-bg: hsl(226, 25%, 17%);
    --card-outline: hsl(0, 0%, 78%);
    --header-text: hsl(200, 60%, 99%);
    --description-text: hsl(200, 60%, 99%);

    --button-bg: hsl(226, 25%, 17%);
    --button-text: hsl(217, 61%, 90%);
    --button-text-hover: hsl(227, 75%, 14%);
    --button-hover: hsl(226, 11%, 37%);
    --button-outline: hsl(0, 0%, 78%);

    --theme-button-bg: hsla(240, 3%, 94%, 0.3);
    --theme-button-hover: hsl(226, 11%, 37%);

    --toggle-inactive: hsl(0, 0%, 78%);

    --filter-btn-hover: hsl(3, 86%, 64%);
    --toggle-active: hsl(3, 71%, 56%);
    --toggle-focus: hsl(3, 71%, 56%);
    --remove-button-hover: hsl(3, 77%, 44%);
}

body {
    background: var(--bgmain);
    min-height: 100vh;
    font-family: 'Noto Sans', sans-serif;
    font-size: 1rem;
}

img, svg, picture {
    max-width: 100%;
    display: block;
}

h1, h2, h3, button {
    line-height: 1.1;
}

button {
    cursor: pointer;
    background-color: var(--button-bg);
    color: var(--button-text);
    padding: .5rem .75rem;
    font-weight: 500;
    border-radius: 1.1rem;
    border: 0;
    outline: 1px solid var(--button-outline);

    &.filter-btn {
        color: var(--button-text);
        font: 1.05rem;

        &:hover {
            background-color: var(--remove-button-hover);
            color: var(--button-text-hover);
        }

        &:focus {
            outline: 2px solid var(--toggle-focus);
            outline-offset: 2px;
        }
    }

    &filter-btn-active {
        background-color: var(--remove-button-hover);
        color: var(--button-text-hover);
    }

    &remove-btn:hover,
    &remove-btn:focus {
        background-color: var(--remove-button-hover);
        color: var(--button-text-hover);
        outline: 2px solid var(--toggle-focus);
        outline-offset: 2px;
    }
}

.container {
    max-width: 90%;
    width: 1400px;
    margin: auto;
}

header {
    background-color: var(--card-bg);
    padding: 1rem;
    margin: 2rem 0 3rem 0;
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-radius: 1.25rem;

    & .logo path:nth-child(2) {
        fill: var(--header-text);
    }
    
    & .theme-btn {
        cursor: pointer;
        background-color: var(--theme-button-bg);
        color: var(--header-text);
        padding: .75rem;
        border-radius: .5rem;

        &:focus {
            outline: 2px solid var(--toggle-focus);
            outline-offset: 2px;
        }        
    }
}

.grid-header {
    color: var(--header-text);
    margin-bottom: 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;

    @media (max-width: 768px) {
        flex-direction: column;
        gap: 2rem;

        & .filter-btns .filter-btn {
            padding: .75rem 1rem;
            font-size: 1.15rem;
            border-radius: 1.25rem;
        }
    }
}

.filter-btns {
    display: flex;
    gap: 1rem;
}

.extensions-grid {
    margin-bottom: 2rem;
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: .75rem;

    & .item {
        background-color: var(--card-bg);
        padding: 1rem;
        border-radius: 1rem;
        outline: 1px solid var(--card-outline);
    }

    & .item .top {
        color: var(--description-text);
        display: flex;
        margin-bottom: 2rem;
        align-items: flex-start;
        gap: .75rem;

        & .name {
            color: var(--header-text);
            margin-bottom: .25rem;
            font-size: 1.25rem;
            font-weight: 700;
        }
    }

    & .item .bottom {
        display: flex;
        align-items: center;
        justify-content: space-between;
    }

    @media (max-width: 1024px) {
        grid-template-columns: 1fr 1fr;
    }

    @media (max-width: 768px) {
        grid-template-columns: 1fr;
    }
}

.toggle-switch {
    width: fit-content;
    display: block;
    position: relative;
}

.toggle-switch .toggle-input {
    position: absolute;
    top: 0;
    left: 0;
    opacity: 0;
}

.toggle-input:focus-visible + .toggle-label {
    outline: 2px solid var(--toggle-focus);
    outline-offset: 2px;
}

.toggle-switch .toggle-label {
    cursor: pointer;
    background-color: var(--toggle-inactive);
    width: 50px;
    height: 28px;
    display: block;
    border-radius: 2rem;
    transition: background-color 200ms;
}

.toggle-switch .toggle-label::before {
    content: '';
    background-color: #FFF;
    width: 20px;
    height: 20px;
    position: absolute;
    top: 50%;
    left: 3px;
    transform: translateY(-50%);
    border-radius: 50%;
    transition: left 200ms ease;
}

.toggle-switch .toggle-input:checked + .toggle-label {
    background-color: var(--toggle-active);
}

.toggle-switch .toggle-input:checked + .toggle-label::before {
    left: 25px;
}