/* =========================================
   MANU PORTFOLIO — SKILLS
   ========================================= */


/* =========================================
   SKILLS
   ========================================= */

.skills {
    position: relative;

    overflow: hidden;
}


/* =========================================
   BACKGROUND
   ========================================= */

.skills__background {
    position: absolute;

    inset: 0;

    pointer-events: none;
}


.skills__grid {
    position: absolute;

    inset: 0;

    opacity: 0.12;

    background-image:
        linear-gradient(
            rgba(139, 92, 246, 0.06) 1px,
            transparent 1px
        ),
        linear-gradient(
            90deg,
            rgba(139, 92, 246, 0.06) 1px,
            transparent 1px
        );

    background-size: 80px 80px;

    mask-image:
        radial-gradient(
            ellipse at center,
            black,
            transparent 78%
        );
}


.skills__glow {
    position: absolute;

    width: 550px;
    height: 550px;

    top: 18%;
    left: 50%;

    transform: translateX(-50%);

    border-radius: 50%;

    background:
        radial-gradient(
            circle,
            rgba(139, 92, 246, 0.09),
            transparent 70%
        );

    filter: blur(70px);
}


/* =========================================
   CONTAINER
   ========================================= */

.skills__container {
    position: relative;

    z-index: 1;
}


/* =========================================
   HEADER
   ========================================= */

.skills__header {
    max-width: 900px;

    margin-inline: auto;

    text-align: center;
}


.skills__eyebrow {
    display: inline-flex;

    align-items: center;

    gap: 14px;

    margin-bottom: 42px;

    color: var(--color-text-muted);

    font-size: 10px;

    letter-spacing: 0.16em;
}


.skills__eyebrow-line {
    width: 38px;
    height: 1px;

    background:
        linear-gradient(
            90deg,
            transparent,
            var(--color-primary)
        );
}


.skills__kicker {
    margin: 0 0 18px;

    color: var(--color-primary-light);

    font-family: var(--font-mono);

    font-size: 10px;

    letter-spacing: 0.15em;
}


.skills__title {
    margin: 0;

    color: var(--color-text);

    font-size: clamp(
        42px,
        5.5vw,
        76px
    );

    line-height: 0.98;

    letter-spacing: -0.05em;

    font-weight: var(--font-weight-bold);

    text-wrap: balance;
}


.skills__title span {
    display: block;

    color: var(--color-primary);
}


.skills__intro {
    max-width: 700px;

    margin: 30px auto 0;

    color: var(--color-text-muted);

    font-size: 17px;

    line-height: 1.75;
}


/* =========================================
   SKILLS TREE
   ========================================= */

.skills-tree {
    position: relative;

    max-width: 1120px;

    margin: 90px auto 0;
}


/* =========================================
   ROOT
   ========================================= */

.skills-tree__root {
    position: relative;

    display: flex;

    align-items: center;
    justify-content: center;

    width: max-content;

    min-height: 58px;

    margin: 0 auto 75px;

    padding: 0 28px;

    border: 1px solid
        rgba(139, 92, 246, 0.45);

    background:
        linear-gradient(
            135deg,
            rgba(139, 92, 246, 0.12),
            rgba(18, 16, 26, 0.9)
        );

    box-shadow:
        0 15px 45px
        rgba(0, 0, 0, 0.25);
}


.skills-tree__root::after {
    content: "";

    position: absolute;

    left: 50%;

    top: 100%;

    width: 1px;

    height: 75px;

    background:
        linear-gradient(
            to bottom,
            var(--color-primary),
            rgba(139, 92, 246, 0.15)
        );
}


.skills-tree__root-dot {
    width: 7px;
    height: 7px;

    margin-right: 12px;

    border-radius: 50%;

    background: var(--color-primary);

    box-shadow:
        0 0 16px
        rgba(139, 92, 246, 0.7);
}


.skills-tree__root-label {
    color: var(--color-text);

    font-size: 11px;

    letter-spacing: 0.12em;
}


/* =========================================
   BRANCHES
   ========================================= */

.skills-tree__branches {
    position: relative;

    display: grid;

    grid-template-columns:
        repeat(4, 1fr);

    gap: 0;
}


.skills-tree__branches::before {
    content: "";

    position: absolute;

    top: -1px;

    left: 12.5%;
    right: 12.5%;

    height: 1px;

    background:
        linear-gradient(
            90deg,
            transparent,
            var(--color-primary),
            transparent
        );

    opacity: 0.55;
}


/* =========================================
   BRANCH
   ========================================= */

.skills-branch {
    position: relative;

    min-height: 245px;

    padding:
        38px
        26px
        28px;

    border-right: 1px solid var(--color-border);

    background:
        linear-gradient(
            180deg,
            rgba(18, 16, 26, 0.45),
            rgba(11, 9, 16, 0.2)
        );

    transition:
        background-color var(--transition-base),
        border-color var(--transition-base);
}


.skills-branch:first-child {
    border-left: 1px solid var(--color-border);
}


.skills-branch::before {
    content: "";

    position: absolute;

    top: -5px;
    left: 50%;

    width: 9px;
    height: 9px;

    transform: translateX(-50%);

    border: 2px solid var(--color-background);

    border-radius: 50%;

    background: var(--color-primary);

    box-shadow:
        0 0 14px
        rgba(139, 92, 246, 0.55);

    z-index: 2;
}


.skills-branch:hover {
    background:
        linear-gradient(
            180deg,
            rgba(139, 92, 246, 0.08),
            rgba(11, 9, 16, 0.35)
        );

    border-color:
        rgba(139, 92, 246, 0.28);
}


/* =========================================
   BRANCH HEADER
   ========================================= */

.skills-branch__header {
    display: flex;

    align-items: baseline;

    gap: 12px;

    margin-bottom: 28px;
}


.skills-branch__number {
    color: var(--color-primary);

    font-size: 9px;

    letter-spacing: 0.08em;
}


.skills-branch__title {
    margin: 0;

    color: var(--color-text);

    font-size: 17px;

    line-height: 1.3;

    font-weight: var(--font-weight-semibold);

    letter-spacing: -0.02em;
}


/* =========================================
   SKILLS NODES
   ========================================= */

.skills-branch__skills {
    position: relative;

    display: flex;

    flex-direction: column;

    align-items: flex-start;

    gap: 10px;

    padding-left: 18px;
}


.skills-branch__skills::before {
    content: "";

    position: absolute;

    top: 4px;
    bottom: 4px;

    left: 2px;

    width: 1px;

    background:
        linear-gradient(
            to bottom,
            var(--color-primary),
            rgba(139, 92, 246, 0.08)
        );
}


/* =========================================
   SKILL NODE
   ========================================= */

.skill-node {
    --skill-level: 0;

    position: relative;

    display: inline-flex;

    align-items: center;

    min-height: 30px;

    padding: 5px 11px 7px;

    border: 1px solid var(--color-border);

    background:
        rgba(11, 9, 16, 0.75);

    color: var(--color-text-muted);

    font-size: 12px;

    line-height: 1.3;

    transition:
        color var(--transition-base),
        background-color var(--transition-base),
        border-color var(--transition-base),
        transform var(--transition-base);
}


/* ---------------------------------------------------------
   Connection to branch
   --------------------------------------------------------- */

.skill-node::before {
    content: "";

    position: absolute;

    left: -20px;

    width: 13px;
    height: 1px;

    background:
        rgba(139, 92, 246, 0.5);
}


/* ---------------------------------------------------------
   Skill level line
   Uses the value injected by animations.js
   --------------------------------------------------------- */

.skill-node::after {
    content: "";

    position: absolute;

    left: 0;
    bottom: 0;

    width: calc(var(--skill-level) * 1%);

    height: 2px;

    background:
        linear-gradient(
            90deg,
            var(--color-primary),
            var(--color-primary-soft)
        );

    transform-origin: left center;

    box-shadow:
        0 0 8px
        rgba(139, 92, 246, 0.35);
}


/* ---------------------------------------------------------
   Hover
   --------------------------------------------------------- */

.skill-node:hover {
    color: var(--color-text);

    border-color:
        rgba(139, 92, 246, 0.45);

    background:
        rgba(139, 92, 246, 0.08);

    transform: translateX(4px);
}


/* ---------------------------------------------------------
   Featured
   --------------------------------------------------------- */

.skill-node--featured {
    color: var(--color-primary-soft);

    border-color:
        rgba(139, 92, 246, 0.3);

    background:
        rgba(139, 92, 246, 0.06);
}


/* =========================================
   FOOTER
   ========================================= */

.skills-tree__footer {
    display: flex;

    align-items: center;

    gap: 22px;

    margin-top: 55px;
}


.skills-tree__footer-line {
    flex: 1;

    height: 1px;

    background:
        linear-gradient(
            90deg,
            transparent,
            var(--color-border)
        );
}


.skills-tree__footer-line:last-child {
    background:
        linear-gradient(
            90deg,
            var(--color-border),
            transparent
        );
}


.skills-tree__footer p {
    max-width: 430px;

    margin: 0;

    color: var(--color-text-subtle);

    font-size: 12px;

    line-height: 1.7;

    text-align: center;
}


/* =========================================
   TABLET
   ========================================= */

@media (max-width: 1000px) {

    .skills-tree {
        margin-top: 70px;
    }


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


    .skills-tree__branches::before {
        left: 25%;
        right: 25%;
    }


    .skills-branch:nth-child(2) {
        border-right: 1px solid var(--color-border);
    }


    .skills-branch:nth-child(3) {
        border-left: 1px solid var(--color-border);
        border-top: 1px solid var(--color-border);
    }


    .skills-branch:nth-child(4) {
        border-top: 1px solid var(--color-border);
    }


    .skills-branch::before {
        top: -5px;
    }

}


/* =========================================
   MOBILE
   ========================================= */

@media (max-width: 600px) {

    .skills__eyebrow {
        margin-bottom: 35px;

        font-size: 8px;
    }


    .skills__eyebrow-line {
        width: 28px;
    }


    .skills__kicker {
        font-size: 9px;

        line-height: 1.6;
    }


    .skills__title {
        font-size: clamp(
            36px,
            10vw,
            52px
        );
    }


    .skills__intro {
        margin-top: 24px;

        font-size: 15px;

        line-height: 1.7;
    }


    .skills-tree {
        margin-top: 50px;
    }


    .skills-tree__root {
        min-height: 52px;

        margin-bottom: 55px;

        padding-inline: 20px;
    }


    .skills-tree__root::after {
        height: 55px;
    }


    .skills-tree__root-label {
        font-size: 9px;
    }


    .skills-tree__branches {
        grid-template-columns: 1fr;
    }


    .skills-tree__branches::before {
        display: none;
    }


    .skills-branch,
    .skills-branch:nth-child(2),
    .skills-branch:nth-child(3),
    .skills-branch:nth-child(4) {
        min-height: auto;

        border-top: 1px solid var(--color-border);
        border-right: 1px solid var(--color-border);
        border-bottom: 0;
        border-left: 1px solid var(--color-border);

        padding: 28px 22px;
    }


    .skills-branch:last-child {
        border-bottom: 1px solid var(--color-border);
    }


    .skills-branch::before {
        display: none;
    }


    .skills-branch__header {
        margin-bottom: 22px;
    }


    .skills-branch__skills {
        gap: 9px;
    }


    .skills-tree__footer {
        margin-top: 38px;
    }


    .skills-tree__footer-line {
        display: none;
    }


    .skills-tree__footer p {
        max-width: 330px;

        margin-inline: auto;

        font-size: 11px;
    }

}