:root {
    box-sizing: border-box;
    font-synthesis: none;
    text-rendering: optimizeLegibility;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;

    /* COLOR VARIABLES */
    --primary-color: #1a1a1a;
    --primary-color-opacity: #3236439b;
    --secondary-color: #111111;
    --ternary-color: #40c4ff;
    --font-color: #e0f7fa;
    --font-color-secondary: #a0a0a0;

    /* OTHER VARIABLES */
    --border-radius: 7px;
    --anim-duration: 0.25s;
    --nav-height: 3rem;
}

*,
*::before,
*::after {
    box-sizing: inherit;
}

::-webkit-scrollbar {
    width: 10px;
}

::-webkit-scrollbar-track {
    background-color: var(--secondary-color);
}

::-webkit-scrollbar-thumb {
    background: var(--font-color);
}

::-webkit-scrollbar-thumb:hover {
    background: color-mix(in srgb, var(--primary-color), white 10%);
}

body {
    margin: 0;
    padding: 0;
    min-height: 100vh;
    -webkit-tap-highlight-color: transparent;
    font-family: "Fira Code", "Courier New", monospace;
    background-color: var(--primary-color);
    color: var(--font-color);
    scroll-behavior: smooth;
    overflow-x: hidden;
}

a {
    position: relative;
    color: var(--ternary-color);
    text-decoration: none;
    word-break: break-all;
    cursor: pointer;
    transition: text-shadow var(--anim-duration) linear;

    &:hover {
        text-shadow: 0 0 8px var(--ternary-color);
    }
}

nav {
    height: var(--nav-height);
    width: 100%;
    position: fixed;
    top: 0;
    display: flex;
    align-items: center;
    gap: 2rem;
    z-index: 10;
    background-color: var(--primary-color);
    font-size: clamp(1rem, 3vw, 1.75rem);
    padding: 0.5rem 1em;
    box-shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px -1px rgba(0, 0, 0, 0.1);

    a {
        &:before {
            content: "";
            position: absolute;
            width: 100%;
            height: 2px;
            inset: auto auto 0 0;
            background: currentColor;
            visibility: hidden;
            border-radius: var(--border-radius);
            transform: scaleX(0);
            transition: var(--anim-duration) linear;
        }

        &:hover,
        &:focus {
            outline: none;
        }

        &:hover:before,
        &:focus:before {
            visibility: visible;
            transform: scaleX(1);
        }
    }
}

main {
    margin-top: var(--nav-height);

    h2 {
        font-size: clamp(1.2rem, 3vw, 2rem);
        margin: 0 0 0.5em 0;
        text-align: center;
        font-weight: 800;
    }

    h3 {
        font-size: clamp(1.15rem, 3vw, 1.75rem);
        font-weight: 700;
    }

    h5 {
        font-size: clamp(1.1rem, 3vw, 1.5rem);
        font-weight: 600;
        letter-spacing: 0.05em;
    }

    section {
        scroll-margin-top: calc(var(--nav-height));
        padding: 2.5rem 10vw;
    }

    section:nth-child(odd) {
        background-color: var(--secondary-color);
    }

    #me {
        text-align: center;

        >p {
            font-weight: bold;
        }
    }

    #contact {
        .container {
            >p {
                text-align: center;
                font-size: clamp(1rem, 2vw, 1.25rem);
                font-weight: bold;
            }

            .contact_icons {
                display: flex;
                justify-content: center;
                align-items: center;
                gap: 2rem;
                margin-top: 1rem;

                a {
                    height: 2.5rem;
                    width: 2.5rem;
                    background-position: center;
                    background-repeat: no-repeat;

                    &::before {
                        display: none;
                    }

                    &:focus,
                    &:hover {
                        filter: invert(0.25);
                    }

                    &#gmail {
                        background-image: url("./img/icon-gmail.svg");
                    }

                    &#github {
                        background-image: url("./img/icon-github.svg");
                        background-size: cover;
                    }

                    &#linkedin {
                        background-image: url("./img/icon-linkedin.svg");
                        background-size: cover;
                    }
                }
            }

            .cv {
                margin-top: 20px;
                display: flex;
                flex-direction: column;
                align-items: center;
                gap: 10px;

                span {
                    font-size: 0.9rem;
                    color: var(--font-color-secondary);
                    text-transform: uppercase;
                    letter-spacing: 1px;
                }

                .cv_btn {
                    text-decoration: none;
                    color: var(--font-color);
                    background: transparent;
                    padding: 0.6rem 1.2rem;
                    border-radius: var(--border-radius);
                    font-size: 0.85rem;
                    font-weight: bold;
                    border: 1px solid var(--ternary-color);
                    transition: all var(--anim-duration) ease-in-out;

                    &:hover {
                        background-color: var(--ternary-color);
                        color: var(--primary-color);
                        box-shadow: 0 0 10px var(--ternary-color);
                    }
                }
            }
        }

    }
}

#portfolio {
    .portfolio_cards {
        display: flex;
        justify-content: center;
        flex-wrap: wrap;
        gap: 1.25rem;

        .portfolio_card {
            flex: 1;
            min-width: 20rem;
            display: grid;
            grid-template-columns: 1fr auto;
            gap: 0.75rem 1vw;
            padding: 0.75rem;
            background-color: #111;
            border-radius: var(--border-radius);
            transition: all 0.3s ease;

            &:hover {
                box-shadow: 0 0 10px var(--ternary-color);

                .portfolio_card_header {
                    color: var(--ternary-color);
                }
            }

            .portfolio_card_header {
                align-self: center;
                margin: 0;
                font-weight: bold;
            }

            .portfolio_card_desc {
                grid-column: 1/-1;
                align-self: center;
                max-height: 10rem;
                min-width: 5rem;
                margin: 0;
                font-style: italic;
                overflow-x: hidden;

                &::-webkit-scrollbar {
                    width: 3px;
                }
            }

            .portfolio_card_icon {
                align-self: start;
                grid-column: 2;
                height: 2em;
                width: 2em;
                margin-left: auto;
                border-radius: 50%;

                &.light {
                    background-color: var(--font-color);
                }

                img {
                    width: 100%;
                    aspect-ratio: 1;
                }
            }

            .portfolio_card_tags {
                grid-column: 1 / -1;
                display: flex;
                align-items: center;
                align-self: flex-end;
                flex-wrap: wrap;
                gap: 0.25rem;
                list-style: none;
                margin: auto 0 0 0;
                padding: 0.5rem 0 0 0;

                >li {
                    font-size: 0.75rem;
                    opacity: 0.85;
                    border: 1px solid var(--ternary-color);
                    border-radius: var(--border-radius);
                    padding: 0.25rem 0.6rem;
                    white-space: nowrap;
                    user-select: none;
                    font-weight: bold;
                    transition: var(--anim-duration) background-color ease-in-out;
                }
            }

            .portfolio_card_actions {
                grid-column: 1 / -1;
                display: flex;
                align-items: center;
                flex-wrap: wrap;
                gap: 1rem;

                a {
                    display: flex;
                    align-items: center;
                    gap: 0.5rem;
                    text-decoration: none;
                    color: var(--font-color-secondary);
                    text-shadow: none;
                    transition: color 0.2s ease;

                    &:hover {
                        color: var(--ternary-color);
                    }

                    i,
                    svg {
                        width: 1.2rem;
                        height: 1.2rem;
                    }

                    .label {
                        font-weight: bold;
                        max-width: 150px;
                        overflow: hidden;
                        text-overflow: ellipsis;
                        white-space: nowrap;
                    }
                }
            }
        }
    }
}

#tech {
    text-align: center;
    font-size: larger;

    h3 {
        margin: 0;
    }

    .container {
        display: flex;
        place-content: center;
        flex-wrap: wrap;
        gap: 0.5rem;
        list-style-type: none;
        padding: 0;
        margin: 0.25rem 0 1rem 0;

        >li {
            border: 1px solid var(--ternary-color);
            border-radius: var(--border-radius);
            padding: 0.75rem 1rem;
            white-space: nowrap;
            user-select: none;
            font-weight: bold;
            transition: var(--anim-duration) all ease-in-out;

            &:hover {
                background-color: var(--ternary-color);
                box-shadow: 0 0 10px var(--ternary-color);
            }
        }
    }
}

@media screen and (max-width: 720px) {
    nav {
        justify-content: center;
    }

    main #portfolio .portfolio_cards {
        gap: 0.75rem
    }
}

@media screen and (max-width: 480px) {
    nav {
        gap: 0.5rem;
    }

    main section {
        padding: 1rem;
    }

    main #portfolio .portfolio_cards {
        gap: 0.5rem;
    }
}