* {
    box-sizing: border-box;
}

& a,
& a:hover,
& a:focus,
& a:active {
    all: unset;
}

:root {
    --primary-background-color: #2E313B;
    --secondary-background-color: #363945;
    --primary-text-color: #A4A9BA;
    --secondary-text-color: #fff;
    --border-color: #494E5C;
    --button-color: #0d6efd;
    --error-color: #FA6360;
    --revision-border-color: #1bc47d;
    --good-color: #1bc47d;
    --bad-color: #fd7e14;
    --danger-color: #FA6360;

    --font-size-14px: 0.875rem;
    --font-size-12px: 0.75rem;
    --font-size-10px: 0.625rem;

    /* platform main colors */
    --twitter-color: #1DA1F2;
    --facebook-color: #1877F2;
    --linkedin-color: #0A66C2;
    --discord-color: #5865F2;
    --whatsapp-color: #25D366;
    --slack-color: #4A154B;

    /* platform shadows */
    --twitter-shadow: 0 8px 20px rgb(29, 161, 242, 0.7);
    --facebook-shadow: 0 8px 20px rgb(24, 119, 242, 0.7);
    --linkedin-shadow: 0 8px 20px rgb(10, 102, 194, 0.7);
    --discord-shadow: 0 8px 20px rgb(88, 101, 242, 0.7);
    --whatsapp-shadow: 0 8px 20px rgb(37, 211, 102, 0.7);
    --slack-shadow: 0 8px 20px rgb(74, 21, 75, 0.7);

    /* platform icon urls */
    --twitter-icon: url('https://abs.twimg.com/favicons/twitter.ico');
    --facebook-icon: url('https://www.facebook.com/favicon.ico');
    --linkedin-icon: url('https://static.licdn.com/aero-v1/sc/h/akt4ae504epesldzj74dzred8');
    --discord-icon: url('https://cdn.prod.website-files.com/6257adef93867e50d84d30e2/62fddf0fde45a8baedcc7ee5_847541504914fd33810e70a0ea73177e%20(2)-1.png');
    --whatsapp-icon: url('https://static.whatsapp.net/rsrc.php/v4/yz/r/ujTY9i_Jhs1.png');
    --slack-icon: url('https://a.slack-edge.com/80588/marketing/img/meta/favicon-32.png');
}

html, body {
    margin: 0;
    padding: 0;
    font-size: 16px;
}

body {
    background-color: var(--primary-background-color);
    color: var(--primary-text-color);
    font-family: 'Roboto', -apple-system, BlinkMacSystemFont, "Segoe UI", Oxygen,
    Ubuntu, Cantarell, "Open Sans", "Helvetica Neue", sans-serif;
    letter-spacing: 0.01em;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 0 2rem;
    position: relative;
}

#to-top {
    position: fixed;
    bottom: 20px;
    right: 20px;
    padding: 1rem;
    background-color: var(--secondary-background-color);
    border: solid 1px var(--border-color);
    border-radius: 8px;
    color: var(--secondary-text-color);
    text-align: center;
    cursor: pointer;
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.7);
    transform: translateY(100%);
    opacity: 0;
    transition: opacity 0.3s ease, transform 0.3s ease;
    pointer-events: none;
    z-index: 9999;
    font-weight: bold;
    letter-spacing: 0.05rem;

    &.show {
        opacity: 1;
        transform: translateY(0);
        cursor: pointer;
        pointer-events: auto;
    }
}

.loader {
    border: 6px solid var(--secondary-background-color);
    border-top: 6px solid var(--button-color);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    animation: spin 1s linear infinite;
    margin-top: 4rem;
}

.snackbar {
    position: fixed;
    width: 250px;
    background-color: var(--secondary-background-color);
    border: solid 1px var(--border-color);
    border-radius: 8px;
    bottom: 50px;
    will-change: transform, opacity;
    opacity: 0;
    transform: translateY(100%);
    transition: opacity 0.3s ease, transform 0.3s ease;
    pointer-events: none;
    z-index: 9999;

    &.show {
        opacity: 1;
        transform: translateY(0);
        cursor: pointer;
        pointer-events: auto;
    }

    &.error {
        border-bottom: solid 4px var(--error-color);
    }

    &.success {
        border-bottom: solid 4px var(--revision-border-color);
    }

    &.neutral {
        border-bottom: solid 4px var(--button-color);
    }

    & p {
        padding: 1rem;
        margin: 0;
    }
}

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

h1 {
    margin-bottom: 0.5rem;
    text-align: center;
    font-family: 'Poppins', sans-serif;
    font-size: 2.5rem;
    font-weight: 600;
    letter-spacing: -0.5px;
    color: #ffffff;

    & a {
        &:hover {
            cursor: pointer;
        }

        & span {
            color: var(--button-color);
            font-weight: 400;
        }
    }
}

p {
    color: #ccc;
    font-size: var(--font-size-14px);
    max-width: 600px;
    text-align: center;
    margin-bottom: 2rem;
}

form {
    width: 100%;
    max-width: 600px;
    display: flex;
    transition: opacity 0.2s ease;

    &[hidden] {
        opacity: 0.2;
        pointer-events: none;
        user-select: none;
        -webkit-user-select: none;
    }

    & input {
        flex-grow: 1;
        padding: 0.75rem 1rem;
        border: solid 1px var(--border-color);
        border-radius: 8px 0 0 8px;
        outline: none;
        background-color: var(--secondary-background-color);
        color: var(--secondary-text-color);
        height: 2.75rem;
        transition: border-color 0.2s ease-in-out;
        font-size: 1rem;

        &.error {
            border-color: var(--error-color);
        }

        &::placeholder {
            color: var(--primary-text-color);
        }
    }

    & button {
        height: 2.75rem;
        background-color: var(--button-color);
        border: solid 1px var(--button-color);
        color: var(--secondary-text-color);
        letter-spacing: 0.05em;
        padding: 0 1.5rem;
        font-weight: 600;
        font-size: 1rem;
        border-radius: 0 8px 8px 0;
        cursor: pointer;
        transition: background-color 0.3s ease;
        outline: none;

        &[disabled] {
            background-color: var(--secondary-background-color);
            cursor: not-allowed;
            border-color: var(--border-color);
            border-left: none;

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

        &:hover {
            background-color: #0b5ed7;
        }
    }
}

.generic-error {
    background-color: var(--secondary-background-color);
    border-left: 4px solid var(--error-color);
    padding: 1rem 1.2rem;
    margin: 1rem 0;
    border-radius: 4px;
    line-height: 1.4;
    max-width: 600px;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.7);
    outline: none;

    &.hidden {
        display: none;
    }

    & p {
        & strong {
            color: var(--secondary-text-color);
            display: block;
        }

        & span {
            color: var(--secondary-text-color);
        }

        color: var(--primary-text-color);
        text-align: left;
        font-size: var(--font-size-14px);
        margin: 0;
    }
}

.disclaimer {
    background-color: var(--secondary-background-color);
    border-left: 4px solid var(--button-color);
    padding: 1rem 1.2rem;
    margin: 1rem 0 0 0;
    border-radius: 4px;
    line-height: 1.4;
    width: 100%;
    max-width: 600px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.7);
    cursor: pointer;
    outline: none;
    user-select: none;
    -webkit-user-select: none;

    &.short {
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
        overflow: hidden;
        text-overflow: ellipsis;
        word-break: break-word;
        max-height: 3.10rem;
        line-height: 1.4;
        padding-top: 0.5rem;
    }

    & p {
        & strong {
            color: var(--secondary-text-color);
        }

        color: var(--primary-text-color);
        text-align: left;
        font-size: var(--font-size-14px);
        margin: 0;
    }
}

.revision {
    background-color: var(--secondary-background-color);
    border-left: 4px solid var(--revision-border-color);
    padding: 1rem 1.2rem;
    margin: 1rem 0;
    border-radius: 4px;
    line-height: 1.4;
    width: 100%;
    max-width: 600px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.7);
    outline: none;

    &.hidden {
        display: none;
    }

    & div {
        margin-bottom: 0.5rem;
        font-size: var(--font-size-14px);
        display: flex;
        align-items: baseline;
        gap: 1rem;

        &:first-of-type {
            & strong {
                flex: 1;
                text-align: center;
            }
        }

        &:last-child {
            margin-bottom: 0;
        }

        & strong {
            color: var(--secondary-text-color);
            letter-spacing: 0.05em;
            width: 120px;
            flex-shrink: 0;
        }

        & span {
            color: var(--primary-text-color);
            text-align: left;
            font-size: var(--font-size-14px);
            margin: 0;
            flex: 1;
            min-width: 0;
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;

            &#url, &#revision-url {
                cursor: pointer;
            }

            &#overall-score {
                font-weight: bold;
            }

            &.excellent {
                color: var(--good-color);
            }

            &.moderate {
                color: var(--bad-color);
            }

            &.poor {
                color: var(--danger-color);
            }
        }

        & .checklist {
            cursor: pointer;
            background-color: var(--primary-background-color);
            color: white;
            padding: 0.2em 1em;
            border-radius: 9999px;
            font-size: 0.9rem;
            font-family: 'Roboto', sans-serif;
            position: relative;
            letter-spacing: 0.05em;

            &::before {
                content: attr(data-label);
                position: relative;
                z-index: 1;
            }

            &#good {
                & .checklist-progress {
                    background-color: var(--good-color);
                }
            }

            &#bad {
                & .checklist-progress {
                    background-color: var(--bad-color);
                }
            }

            &#danger {
                & .checklist-progress {
                    background-color: var(--danger-color);
                }
            }

            & .checklist-progress {
                opacity: 0.8;
                transition: width 0.5s ease;
                position: absolute;
                top: 0;
                bottom: 0;
                left: 0;
                right: 0;
                border-radius: 9999px;
                z-index: 0;
                width: 0;
            }
        }
    }
}

.preview-container {
    display: flex;
    flex-wrap: wrap;
    gap: 1.5rem;
    justify-content: center;
    max-width: 960px;
    width: 100%;
    margin-bottom: 2rem;

    &.hide {
        display: none;
    }

    & section {
        flex: 1 1 calc(50% - 0.75rem);
        min-width: 280px;
        transition: transform 0.3s ease-in-out, box-shadow 0.3s ease-in-out;
        transform-origin: center;
        will-change: transform, box-shadow;
        box-shadow: 0 8px 20px rgba(0,0,0,0.7);
        outline: none;

        &.twitter {
            &:hover, &:focus {
                transform: scale(1.02);
                box-shadow: var(--twitter-shadow);
            }

            & .card-header {
                border-bottom: 1px solid var(--twitter-color);
                & .icon {
                    background-image: var(--twitter-icon);
                }
                & .site-name {
                    color: var(--twitter-color);
                }
            }
        }

        &.facebook {
            &:hover, &:focus {
                transform: scale(1.02);
                box-shadow: var(--facebook-shadow);
            }

            & .card-header {
                border-bottom: 1px solid var(--facebook-color);
                & .icon {
                    background-image: var(--facebook-icon);
                }
                & .site-name {
                    color: var(--facebook-color);
                }
            }
        }

        &.linkedin {
            &:hover, &:focus {
                transform: scale(1.02);
                box-shadow: var(--linkedin-shadow);
            }

            & .card-header {
                border-bottom: 1px solid var(--linkedin-color);
                & .icon {
                    background-image: var(--linkedin-icon);
                }
                & .site-name {
                    color: var(--linkedin-color);
                }
            }
        }

        &.discord {
            &:hover, &:focus {
                transform: scale(1.02);
                box-shadow: var(--discord-shadow);
            }

            & .card-header {
                border-bottom: 1px solid var(--discord-color);
                & .icon {
                    background-image: var(--discord-icon);
                }
                & .site-name {
                    color: var(--discord-color);
                }
            }
        }

        &.whatsapp {
            &:hover, &:focus {
                transform: scale(1.02);
                box-shadow: var(--whatsapp-shadow);
            }

            & .card-header {
                border-bottom: 1px solid var(--whatsapp-color);
                & .icon {
                    background-image: var(--whatsapp-icon);
                }
                & .site-name {
                    color: var(--whatsapp-color);
                }
            }
        }

        &.slack {
            &:hover, &:focus {
                transform: scale(1.02);
                box-shadow: var(--slack-shadow);
            }

            & .card-header {
                border-bottom: 1px solid var(--slack-color);
                & .icon {
                    background-image: var(--slack-icon);
                }
                & .site-name {
                    color: var(--slack-color);
                }
            }
        }
    }
}

.checklist {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    max-width: 960px;
    width: 100%;
    padding: 1rem 0;

    &.good {
        border-top: solid 4px var(--good-color);
        & .check-item {
            box-shadow: 0 1px 2px rgba(27, 196, 125, 0.5);
            &.checked {
                & .check-icon {
                    background-color: var(--good-color);
                    border-color: var(--good-color);
                }
            }
        }
    }

    &.bad {
        border-top: solid 4px var(--bad-color);
        & .check-item {
            box-shadow: 0 1px 2px rgba(253, 126, 20, 0.5);
            &.checked {
                & .check-icon {
                    background-color: var(--bad-color);
                    border-color: var(--bad-color);
                }
            }
        }
    }

    &.danger {
        border-top: solid 4px var(--danger-color);
        & .check-item {
            box-shadow: 0 1px 2px rgba(250, 99, 96, 0.5);
            &.checked {
                & .check-icon {
                    background-color: var(--danger-color);
                    border-color: var(--danger-color);
                }
            }
        }
    }

    & .check-item {
        display: flex;
        align-items: flex-start;
        gap: 1rem;
        padding: 1rem;
        border-radius: 12px;
        color: #fff;
        flex: 1 1 calc(50% - 1rem);
        user-select: none;
        min-width: 280px;
        transform-origin: center;
        transition: transform 0.3s ease-in-out;
        will-change: transform;
        box-shadow: 0 2px 5px rgba(0,0,0,0.7);
        outline: none;
        max-width: 472px;

        &:hover, &:focus {
            transform: scale(1.02);
        }

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

            & .check-icon {
                background-color: #1e9c4f;
                border: 2px solid #1e9c4f;
                position: relative;
                border-radius: 6px;
                width: 24px;
                height: 24px;
                flex-shrink: 0;

                &::after {
                    content: '';
                    position: absolute;
                    left: 6px;
                    top: 2px;
                    width: 6px;
                    height: 12px;
                    border: solid #fff;
                    border-width: 0 2px 2px 0;
                    transform: rotate(45deg);
                }
            }
        }

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

            & .check-icon {
                background-color: var(--primary-background-color);
                position: relative;
                border-radius: 6px;
                width: 24px;
                height: 24px;
                flex-shrink: 0;
            }
        }

        & .check-text {
            display: flex;
            flex-direction: column;

            & strong {
                margin-bottom: 0.3rem;
                letter-spacing: 0.05em;
            }

            & p {
                margin: 0;
                font-size: var(--font-size-14px);
                color: var(--primary-text-color);
                text-align: left;

                & span {
                    display: -webkit-box;
                    -webkit-line-clamp: 1;
                    -webkit-box-orient: vertical;
                    overflow: hidden;
                    text-overflow: ellipsis;
                    margin-top: 0.5rem;
                    font-size: var(--font-size-12px);
                    color: var(--secondary-text-color);
                    word-break: break-word;
                    border-radius: 8px;
                    background-color: var(--primary-background-color);
                    line-height: 1.6rem;
                    padding-left: 0.5rem;
                    padding-right: 0.5rem;

                    &.not-available {
                        color: var(--primary-text-color);
                    }
                }
            }
        }
    }
}

.preview-card {
    background-color: var(--secondary-background-color);
    border-radius: 12px;
    width: 320px;
    color: #eee;
    display: flex;
    flex-direction: column;
    overflow: hidden;

    & .card-header {
        display: flex;
        align-items: center;
        padding: 12px 16px;
        gap: 10px;

        & .icon {
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background-repeat: no-repeat;
            background-position: center;
            background-size: contain;
            object-fit: contain;
        }

        & .site-name {
            font-weight: 700;
            font-size: 1rem;
        }
    }

    & .card-body {
        padding: 1rem;
        flex-grow: 1;
        display: flex;
        flex-direction: column;

        & .card-title {
            font-weight: 700;
            font-size: 1rem;
            margin: 0 0 6px 0;
        }

        & .card-description {
            font-size: var(--font-size-14px);
            color: #ccc;
            margin-bottom: 12px;
            flex-grow: 1;
        }

        & .card-image {
            width: 100%;
            border-radius: 12px;
            overflow: hidden;
            margin-top: auto;

            & img {
                width: 100%;
                display: block;
                object-fit: cover;
                height: 180px;
            }
        }

        & .card-source {
            display: flex;
            align-items: center;
            padding-top: 12px;
            gap: 10px;

            & .source-icon {
                width: 24px;
                height: 24px;
                border-radius: 50%;
                background-repeat: no-repeat;
                background-position: center;
                background-size: contain;
                object-fit: contain;
            }

            & .source-name {
                font-weight: 400;
                font-size: var(--font-size-12px);
                text-transform: uppercase;
                color: var(--primary-text-color);
            }
        }
    }
}

footer {
    margin-top: auto;
    padding: 2rem 0 1rem 0;
    color: #666;
    font-size: var(--font-size-14px);
    text-align: center;
    width: 100%;

    nav {
        margin-bottom: 0.5rem;
        color: #fff;
        font-size: var(--font-size-12px);

        a {
            color: #fff;
            cursor: pointer;
            font-weight: normal;

            &:hover {
                color: var(--button-color);
                cursor: pointer;
            }
        }
    }
}

#cookie-banner {
    & #cookie-placeholder {
        position: fixed;
        bottom:0;
        left:0;
        right:0;
        background: var(--secondary-background-color);
        color: var(--primary-text-color);
        padding: 1rem;
        box-shadow:0 -2px 8px rgba(0,0,0,0.2);
        z-index:1000;
        font-size: var(--font-size-14px);
        line-height: 1.5;

        & #cookie-body {
            max-width: 800px;
            margin: auto;
            display: flex;
            flex-direction: column;
            gap: 1rem;

            & strong {
                color: #fff;
            }

            & #cookie-buttons {
                display: flex;
                gap: 1rem;

                & button {
                    padding: 0.5rem 1rem;
                    color: #fff;
                    border: none;
                    border-radius: 4px;
                    cursor: pointer;

                    &#accept-cookies {
                        background-color: #4CAF50;
                    }

                    &#reject-cookies {
                        background-color: #f44336;
                    }
                }
            }
        }
    }
}

@media (max-width: 720px) {
    .preview-card {
        width: 100%;
    }

    .checklist {
        & .check-item {
            width: 100%;
        }
    }

    form {
        flex-direction: column;

        & input,
        & button {
            width: 100%;
            border-radius: 8px;
        }

        & button {
            margin-top: 0.5rem;
        }
    }
}

@media (max-width: 600px) {
    .revision {
        & div {
            flex-direction: column;
            gap: 0.5rem;

            & span, & strong {
                width: 100%;
            }
        }
    }
}