:root {
    --neutral-900: hsl(227, 75%, 14%);
    --neutral-800: hsl(226, 25%, 17%);
    --neutral-700: hsla(225, 23%, 24%, 0.9);
    --neutral-600: hsl(226, 11%, 37%);
    --neutral-300: hsl(0, 0%, 78%);
    --neutral-200: hsl(217, 61%, 90%);
    --neutral-100: hsl(0, 0%, 93%);
    --neutral-0: hsl(200, 60%, 99%);

    --red-400: hsl(3, 86%, 64%);
    --red-500: hsl(3, 71%, 56%);
    --red-700: hsl(3, 77%, 44%);

    --light-gradient: linear-gradient(180deg, #EBF2FC 0%, #EEF8F9 100%);
    --dark-gradient: linear-gradient(180deg, #040918 0%, #091540 100%);

   --box-shadow: 0 5px 5px 1px rgba(0, 0, 0, 0.3);

    color-scheme: dark light;
    background: var(--dark-gradient) no-repeat center;
    color: var(--neutral-0);

}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: "Noto Sans", sans-serif;
}

body {
    width: 100%;
    min-height: 100vh;
    position: relative;
    padding: 2rem;
    margin: 0 auto;
    max-width: 1280px;
    padding-bottom: 6rem;
}

button {
    cursor: pointer;
    transition: all 0.2s ease-in-out;
}

button:hover {
    transform: scale(1.05);
    background-color: var(--red-500);
}

header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: var(--neutral-800);
    border-radius: 1rem;
    padding: 1rem;
    margin-bottom: 1rem;
}

header .logo-text {
    fill: var(--neutral-0);
}

header button {
    padding: 0.7rem;
    background-color: var(--neutral-700);
    border: none;
    border-radius: 1rem;
}

.btn-image {
    width: 1.5rem;
    aspect-ratio: 1;
    background-image: url("./assets/icon-sun.svg");
    background-repeat: no-repeat;
    background-size: contain;
}

.theme-light .btn-image {
    background-image: url("./assets/icon-moon.svg");
}

.theme-light header button:hover {
    background-color: var(--neutral-300);
}

nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 0;
    margin: 2rem 0;
}

nav h1 {
    font-size: 2rem;
}

.filter-btn {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.5rem;
}

nav button {
    padding: 0.5rem 1rem;
    border-radius: 1rem;
    border: none;
    background-color: var(--neutral-700);
    font-size: 1.1rem;
    color: var(--neutral-0);
}

nav button.active {
    background-color: var(--red-500);
    color: var(--neutral-800);
    font-weight: 700;
}

nav button:hover {
    color: var(--neutral-800);
    font-weight: 700;
    box-shadow: var(--box-shadow);
}

.extensions-container {
    width: 100%;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
}

.card {
    width: 100%;
    padding: 1rem;
    background: var(--neutral-800);
    backdrop-filter: blur(0.5rem);
    border: 1px solid var(--neutral-600);
    box-shadow: 0 5px 0.5rem var(--neutral-900);
    border-radius: 1rem;
    display: flex;
    flex-direction: column;
    transition: all 0.2s ease-in-out;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: var(--box-shadow);
}

.card-header {
    display: flex;
    margin-bottom: 4rem;
    gap: 1rem;
}

.header-text {
    display: grid;
    gap: 0.5rem;
}

.card-actions {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.remove-btn {
    padding: 0.5rem 1rem;
    background-color: transparent;
    border: 1px solid var(--neutral-600);
    border-radius: 1rem;
    font-size: 1rem;
    color: var(--neutral-0);
}

.remove-btn:hover {
    color: var(--neutral-900);
}

.toggle-switch {
    position: relative;
    display: inline-block;
    width: 2.5rem;
    height: 1.2rem;
    cursor: pointer;
}

.toggle-switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.toggle-slider {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--neutral-600);
    border-radius: 34px;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.1);
    cursor: pointer;
}

.toggle-slider:before {
    position: absolute;
    content: "";
    height: 1rem;
    width: 1rem;
    left: 0.1rem;
    bottom: 0.1rem;
    background: white;
    border-radius: 50%;
    transition: all 0.3s ease;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

.toggle-switch input:checked+.toggle-slider {
    background: var(--red-400);
}

.toggle-switch input:checked+.toggle-slider:before {
    transform: translateX(1.3rem);
}


.toggle-switch input:checked+.toggle-slider {
    color: white;
}


.toggle-switch:active .toggle-slider {
    transform: scale(0.95);
}

.empty-state {
    position: absolute;
    left: calc(50% - 50px);
    top: 50vh;
}

.empty-state img {
    transform: scale(1.5);
}

.attribution {
    font-size: 0.9rem;
    position: fixed;
    padding: 0.5rem 1rem;
    background-color: var(--neutral-700);
    right: 1rem;
    bottom: 1rem;
    border: 1px solid var(--neutral-600);
    border-radius: 1rem;
    backdrop-filter: blur(0.2rem);
    box-shadow: var(--box-shadow);
}

.attribution p {
    margin: 0.2rem 0;
}

.attribution a {
    color: var(--red-400);
}

.theme-light {
    --dark-gradient: linear-gradient(180deg, #EBF2FC 0%, #EEF8F9 100%);

    --neutral-900: hsl(200, 60%, 99%);
    --neutral-800: hsl(200, 60%, 99%);
    --neutral-700: hsla(200, 60%, 99%, 0.9);

    --neutral-0: hsl(227, 75%, 14%);

    --box-shadow: 0 5px 5px 1px rgba(0, 0, 0, 0.5);
}

@media screen and (max-width: 1280px) {
    body {
        max-width: 720px;
    }

    .extensions-container {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media screen and (max-width: 720px) {
    body {
        max-width: 100%;
    }

    nav {
        flex-direction: column;
        gap: 1rem;
        margin: 0.5rem 0;
    }

    .extensions-container {
        grid-template-columns: repeat(1, 1fr);
    }
}