:root {
    --background: #071017;
    --background-soft: #0b161f;
    --surface: #0d1b25;
    --surface-light: #122532;

    --text: #f4f7f9;
    --text-soft: #a7b4bc;
    --text-muted: #71818b;

    --accent: #38d6b4;
    --accent-soft: rgba(56, 214, 180, 0.12);

    --border: rgba(255, 255, 255, 0.09);

    --container: 1180px;

    --radius: 18px;

    --transition: 180ms ease;
}


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


html {
    scroll-behavior: smooth;
}


body {
    margin: 0;

    background:
        radial-gradient(
            circle at 70% 10%,
            rgba(32, 103, 111, 0.18),
            transparent 35%
        ),
        var(--background);

    color: var(--text);

    font-family:
        Inter,
        "Segoe UI",
        Roboto,
        Helvetica,
        Arial,
        sans-serif;

    line-height: 1.6;

    -webkit-font-smoothing: antialiased;
}


a {
    color: inherit;
    text-decoration: none;
}


button {
    font: inherit;
}


.container {
    width: min(
        calc(100% - 40px),
        var(--container)
    );

    margin-inline: auto;
}


/* Header */

.site-header {
    position: fixed;

    top: 0;
    left: 0;

    width: 100%;

    z-index: 100;

    background: rgba(7, 16, 23, 0.76);

    border-bottom: 1px solid transparent;

    backdrop-filter: blur(18px);

    transition: var(--transition);
}


.site-header.scrolled {
    border-color: var(--border);
}


.nav-wrapper {
    min-height: 82px;

    display: flex;

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

    gap: 30px;
}


.brand {
    display: flex;

    align-items: center;

    gap: 13px;
}


.brand-mark {
    width: 42px;
    height: 42px;

    display: grid;
    place-items: center;

    border: 1px solid rgba(56, 214, 180, 0.45);

    border-radius: 11px;

    background: var(--accent-soft);

    color: var(--accent);

    font-weight: 800;

    letter-spacing: 0.04em;
}


.brand-text {
    display: flex;

    flex-direction: column;

    line-height: 1.2;
}


.brand-text strong {
    font-size: 0.94rem;

    letter-spacing: 0.02em;
}


.brand-text small {
    margin-top: 4px;

    color: var(--text-muted);

    font-size: 0.69rem;

    text-transform: uppercase;

    letter-spacing: 0.13em;
}


.main-nav {
    display: flex;

    align-items: center;

    gap: 28px;
}


.main-nav > a {
    color: var(--text-soft);

    font-size: 0.88rem;

    transition: var(--transition);
}


.main-nav > a:hover {
    color: var(--text);
}


.language-switch {
    padding: 8px 13px;

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

    border-radius: 8px;

    background: transparent;

    color: var(--text-soft);

    cursor: pointer;

    transition: var(--transition);
}


.language-switch:hover {
    border-color: rgba(56, 214, 180, 0.5);

    color: var(--accent);
}


.nav-toggle {
    display: none;

    width: 42px;

    padding: 8px;

    border: 0;

    background: transparent;

    cursor: pointer;
}


.nav-toggle span {
    display: block;

    height: 2px;

    margin: 6px 0;

    background: var(--text);

    border-radius: 999px;
}


/* Hero */

.hero {
    position: relative;

    min-height: 100vh;

    display: flex;

    align-items: center;

    overflow: hidden;

    padding: 150px 0 90px;
}


.hero-grid {
    position: absolute;

    inset: 0;

    opacity: 0.13;

    background-image:
        linear-gradient(
            rgba(255, 255, 255, 0.08) 1px,
            transparent 1px
        ),
        linear-gradient(
            90deg,
            rgba(255, 255, 255, 0.08) 1px,
            transparent 1px
        );

    background-size: 52px 52px;

    mask-image:
        linear-gradient(
            to bottom,
            black,
            transparent 88%
        );

    pointer-events: none;
}


.hero-layout {
    position: relative;

    display: grid;

    grid-template-columns:
        minmax(0, 1.18fr)
        minmax(350px, 0.82fr);

    align-items: center;

    gap: 90px;
}


.eyebrow {
    margin: 0 0 18px;

    color: var(--accent);

    font-size: 0.73rem;

    font-weight: 700;

    text-transform: uppercase;

    letter-spacing: 0.19em;
}


.hero h1 {
    max-width: 800px;

    margin: 0;

    font-size: clamp(
        4.3rem,
        8.5vw,
        8.2rem
    );

    line-height: 0.88;

    letter-spacing: -0.07em;
}


.hero h1 span {
    display: block;

    color: transparent;

    -webkit-text-stroke:
        1px rgba(255, 255, 255, 0.54);
}


.hero-title {
    margin: 38px 0 0;

    color: var(--text);

    font-size: clamp(
        1.15rem,
        2vw,
        1.5rem
    );

    font-weight: 600;
}


.hero-description {
    max-width: 680px;

    margin: 20px 0 0;

    color: var(--text-soft);

    font-size: 1.04rem;
}


.hero-actions {
    display: flex;

    flex-wrap: wrap;

    gap: 12px;

    margin-top: 34px;
}


.button {
    min-height: 48px;

    display: inline-flex;

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

    padding: 0 22px;

    border: 1px solid transparent;

    border-radius: 9px;

    font-size: 0.88rem;

    font-weight: 700;

    transition: var(--transition);
}


.button-primary {
    background: var(--accent);

    color: #03120f;
}


.button-primary:hover {
    transform: translateY(-2px);

    box-shadow:
        0 12px 30px rgba(56, 214, 180, 0.16);
}


.button-secondary {
    border-color: var(--border);

    color: var(--text);
}


.button-secondary:hover {
    border-color: rgba(255, 255, 255, 0.22);

    background: rgba(255, 255, 255, 0.03);
}


.hero-meta {
    max-width: 650px;

    display: grid;

    grid-template-columns: repeat(2, 1fr);

    gap: 1px;

    margin-top: 48px;

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

    background: var(--border);
}


.hero-meta > div {
    padding: 17px 20px;

    background: var(--background);
}


.meta-label {
    display: block;

    margin-bottom: 4px;

    color: var(--text-muted);

    font-size: 0.66rem;

    text-transform: uppercase;

    letter-spacing: 0.13em;
}


.hero-meta strong {
    font-size: 0.8rem;
}


/* Engineering panel */

.engineering-panel {
    position: relative;

    padding: 22px;

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

    border-radius: var(--radius);

    background:
        linear-gradient(
            145deg,
            rgba(255, 255, 255, 0.05),
            rgba(255, 255, 255, 0.01)
        );

    box-shadow:
        0 40px 90px rgba(0, 0, 0, 0.28);
}


.engineering-panel::before {
    content: "";

    position: absolute;

    inset: 12px;

    border: 1px solid rgba(56, 214, 180, 0.07);

    border-radius: 12px;

    pointer-events: none;
}


.panel-header {
    position: relative;

    display: flex;

    justify-content: space-between;

    padding-bottom: 18px;

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

    color: var(--text-muted);

    font-size: 0.63rem;

    letter-spacing: 0.13em;
}


.status {
    display: flex;

    align-items: center;

    gap: 7px;

    color: var(--accent);
}


.status i {
    width: 7px;
    height: 7px;

    border-radius: 50%;

    background: var(--accent);

    box-shadow:
        0 0 12px rgba(56, 214, 180, 0.8);
}


.profile-monogram {
    height: 280px;

    display: grid;

    place-items: center;
}


.profile-monogram span {
    color: transparent;

    font-size: clamp(
        7rem,
        13vw,
        10rem
    );

    font-weight: 800;

    line-height: 1;

    letter-spacing: -0.08em;

    -webkit-text-stroke:
        1px rgba(56, 214, 180, 0.55);
}


.panel-lines {
    position: relative;

    border-top: 1px solid var(--border);
}


.panel-lines > div {
    display: flex;

    justify-content: space-between;

    gap: 20px;

    padding: 13px 0;

    border-bottom: 1px solid var(--border);
}


.panel-lines span {
    color: var(--text-muted);

    font-size: 0.62rem;

    letter-spacing: 0.1em;
}


.panel-lines strong {
    color: var(--text-soft);

    font-size: 0.68rem;

    text-align: right;
}


/* Sections */

.section {
    padding: 115px 0;
}


.section-heading {
    max-width: 720px;

    margin-bottom: 55px;
}


.section-heading h2 {
    margin: 0;

    font-size: clamp(
        2.4rem,
        5vw,
        4.5rem
    );

    line-height: 1;

    letter-spacing: -0.05em;
}


.section-heading h2 span,
.contact-section h2 span {
    color: var(--text-muted);
}


.intro-section {
    border-top: 1px solid var(--border);
}


.intro-grid {
    display: grid;

    grid-template-columns: 1fr 1fr;

    gap: 80px;

    color: var(--text-soft);
}


.intro-grid p {
    margin: 0;

    font-size: 1.08rem;
}


.intro-grid .lead-text {
    color: var(--text);

    font-size: clamp(
        1.5rem,
        2.6vw,
        2.15rem
    );

    line-height: 1.35;
}


/* Domains */

.domains-section {
    background: var(--background-soft);

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

    border-bottom: 1px solid var(--border);
}


.domain-grid {
    display: grid;

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

    gap: 1px;

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

    background: var(--border);
}


.domain-card {
    min-height: 300px;

    padding: 28px;

    background: var(--background-soft);

    transition: var(--transition);
}


.domain-card:hover {
    background: var(--surface);
}


.domain-number {
    color: var(--accent);

    font-size: 0.7rem;

    letter-spacing: 0.12em;
}


.domain-card h3 {
    margin: 65px 0 18px;

    font-size: 1.35rem;
}


.domain-card p {
    margin: 0;

    color: var(--text-soft);

    font-size: 0.91rem;
}


/* Projects */

.project-heading {
    max-width: none;

    display: flex;

    align-items: flex-end;
    justify-content: space-between;

    gap: 60px;
}


.project-heading > p {
    max-width: 390px;

    margin: 0;

    color: var(--text-soft);

    font-size: 0.91rem;
}


.project-grid {
    display: grid;

    grid-template-columns:
        repeat(3, 1fr);

    gap: 18px;
}


.project-card {
    min-height: 430px;

    display: flex;

    flex-direction: column;

    padding: 30px;

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

    border-radius: var(--radius);

    background:
        linear-gradient(
            145deg,
            rgba(255, 255, 255, 0.035),
            transparent
        );

    transition: var(--transition);
}


.project-card:hover {
    transform: translateY(-5px);

    border-color: rgba(56, 214, 180, 0.28);
}


.project-card-featured {
    background:
        linear-gradient(
            145deg,
            rgba(56, 214, 180, 0.09),
            rgba(255, 255, 255, 0.02)
        );
}


.project-top {
    display: flex;

    justify-content: space-between;

    color: var(--text-muted);

    font-size: 0.68rem;

    text-transform: uppercase;

    letter-spacing: 0.11em;
}


.project-status {
    color: var(--accent);
}


.project-card h3 {
    margin: 65px 0 0;

    font-size: 3.4rem;

    letter-spacing: -0.06em;
}


.project-name {
    margin: 5px 0 22px !important;

    color: var(--text) !important;

    font-weight: 600;
}


.project-card p {
    margin: 0;

    color: var(--text-soft);

    font-size: 0.93rem;
}


.project-link {
    margin-top: auto;

    padding-top: 30px;

    color: var(--text-muted);

    font-size: 0.78rem;
}


/* Experience */

.experience-section {
    background: var(--surface);

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

    border-bottom: 1px solid var(--border);
}


.experience-layout {
    display: grid;

    grid-template-columns:
        1fr 1fr;

    gap: 90px;
}


.experience-content {
    display: flex;

    align-items: flex-start;

    gap: 35px;

    padding-top: 30px;
}


.experience-number {
    margin: 0;

    color: var(--accent);

    font-size: clamp(
        4rem,
        8vw,
        7rem
    );

    font-weight: 800;

    line-height: 0.85;

    letter-spacing: -0.08em;
}


.experience-content strong {
    display: block;

    margin-bottom: 12px;

    font-size: 1.1rem;
}


.experience-content div p {
    margin: 0;

    color: var(--text-soft);

    font-size: 0.94rem;
}


/* Contact */

.contact-section {
    padding-top: 140px;
    padding-bottom: 140px;
}


.contact-layout {
    display: grid;

    grid-template-columns:
        1.2fr 0.8fr;

    align-items: end;

    gap: 80px;
}


.contact-section h2 {
    max-width: 700px;

    margin: 0;

    font-size: clamp(
        3rem,
        6vw,
        5.8rem
    );

    line-height: 0.95;

    letter-spacing: -0.06em;
}


.contact-content {
    color: var(--text-soft);
}


.contact-actions {
    margin-top: 25px;
}


/* Footer */

.site-footer {
    padding: 35px 0;

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

    color: var(--text-muted);

    font-size: 0.78rem;
}


.footer-layout {
    display: grid;

    grid-template-columns:
        1fr auto auto;

    align-items: center;

    gap: 30px;
}


.site-footer strong {
    color: var(--text);
}


.site-footer p {
    margin: 2px 0 0;
}


/* Responsive */

@media (max-width: 1000px) {

    .hero-layout {
        grid-template-columns: 1fr;

        gap: 65px;
    }


    .hero-visual {
        max-width: 600px;
    }


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


    .project-grid {
        grid-template-columns: 1fr;
    }


    .project-card {
        min-height: 340px;
    }


    .experience-layout {
        grid-template-columns: 1fr;

        gap: 25px;
    }

}


@media (max-width: 820px) {

    .nav-toggle {
        display: block;
    }


    .main-nav {
        position: absolute;

        top: 82px;
        left: 20px;
        right: 20px;

        display: none;

        flex-direction: column;

        align-items: stretch;

        gap: 0;

        padding: 12px;

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

        border-radius: 12px;

        background: #09141c;

        box-shadow:
            0 30px 70px rgba(0, 0, 0, 0.4);
    }


    .main-nav.open {
        display: flex;
    }


    .main-nav > a,
    .language-switch {
        padding: 13px 12px;

        text-align: left;
    }


    .language-switch {
        margin-top: 6px;
    }


    .intro-grid,
    .contact-layout {
        grid-template-columns: 1fr;

        gap: 30px;
    }


    .project-heading {
        display: block;
    }


    .project-heading > p {
        margin-top: 25px;
    }


    .footer-layout {
        grid-template-columns: 1fr;

        gap: 15px;
    }

}


@media (max-width: 600px) {

    .container {
        width: min(
            calc(100% - 28px),
            var(--container)
        );
    }


    .hero {
        padding-top: 125px;
    }


    .hero h1 {
        font-size: clamp(
            3.9rem,
            20vw,
            6rem
        );
    }


    .hero-meta {
        grid-template-columns: 1fr;
    }


    .domain-grid {
        grid-template-columns: 1fr;
    }


    .domain-card {
        min-height: 250px;
    }


    .domain-card h3 {
        margin-top: 45px;
    }


    .section {
        padding: 85px 0;
    }


    .experience-content {
        flex-direction: column;
    }

}