:root {
    --bg: #080808;
    --bg-soft: #0d0d0d;
    --surface: #111111;
    --surface-hover: #161616;

    --text: #f2f2ee;
    --text-soft: #c4c4bd;
    --muted: #858580;

    --line: #242424;
    --line-light: #303030;

    --accent: #b7ff4a;
    --accent-dark: #8fca32;

    --max-width: 1200px;

    --font-main: "Inter", sans-serif;
    --font-display: "Space Grotesk", sans-serif;

    --transition: 250ms ease;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: 90px;
}

body {
    background: var(--bg);
    color: var(--text);
    font-family: var(--font-main);
    line-height: 1.6;
    overflow-x: hidden;
}

body::selection {
    background: var(--accent);
    color: #000;
}

img {
    display: block;
    max-width: 100%;
}

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

button,
a {
    -webkit-tap-highlight-color: transparent;
}

button {
    font: inherit;
}

ul {
    list-style: none;
}


::-webkit-scrollbar {
    width: 8px;
}

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

::-webkit-scrollbar-thumb {
    background: #303030;
    border-radius: 20px;
}

::-webkit-scrollbar-thumb:hover {
    background: #454545;
}

.container {
    width: min(calc(100% - 48px), var(--max-width));
    margin-inline: auto;
}

.section {
    position: relative;
    padding: 130px 0;
    border-top: 1px solid var(--line);
}

.section-header {
    display: grid;
    grid-template-columns: 220px 1fr;
    gap: 50px;
    margin-bottom: 70px;
}

.section-number {
    color: var(--accent);
    font-family: var(--font-display);
    font-size: 0.75rem;
    letter-spacing: 0.18em;
    text-transform: uppercase;
}

.section-title {
    max-width: 800px;
    font-family: var(--font-display);
    font-size: clamp(2.5rem, 6vw, 5rem);
    font-weight: 500;
    line-height: 0.95;
    letter-spacing: -0.05em;
}

.section-intro {
    max-width: 700px;
    margin-top: 25px;
    color: var(--muted);
    font-size: 1rem;
}

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

.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;

    background: rgba(8, 8, 8, 0.78);
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);

    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.navbar {
    min-height: 76px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    font-family: var(--font-display);
    font-size: 1rem;
    font-weight: 700;
    letter-spacing: 0.08em;
}

.logo span {
    color: var(--accent);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 32px;
}

.nav-links a {
    position: relative;
    color: var(--muted);
    font-size: 0.78rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    transition: color var(--transition);
}

.nav-links a::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: -7px;

    width: 0;
    height: 1px;

    background: var(--accent);
    transition: width var(--transition);
}

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

.nav-links a:hover::after {
    width: 100%;
}

.menu-button {
    display: none;

    width: 42px;
    height: 42px;

    border: 1px solid var(--line);
    background: transparent;
    color: var(--text);

    cursor: pointer;
}

.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;

    padding: 150px 0 90px;

    overflow: hidden;
}

.hero::before {
    content: "";
    position: absolute;

    width: 700px;
    height: 700px;

    top: -300px;
    right: -250px;

    background: radial-gradient(
        circle,
        rgba(183, 255, 74, 0.08),
        transparent 68%
    );

    pointer-events: none;
}

.hero-grid {
    position: relative;
    z-index: 1;

    display: grid;
    grid-template-columns: minmax(0, 1.3fr) minmax(300px, 0.7fr);
    align-items: center;
    gap: 80px;
}

.hero-eyebrow {
    display: flex;
    align-items: center;
    gap: 12px;

    margin-bottom: 25px;

    color: var(--accent);
    font-size: 0.72rem;
    font-weight: 600;
    letter-spacing: 0.18em;
    text-transform: uppercase;
}

.hero-eyebrow::before {
    content: "";

    width: 30px;
    height: 1px;

    background: var(--accent);
}

.hero-title {
    max-width: 900px;

    font-family: var(--font-display);
    font-size: clamp(4rem, 9vw, 8.8rem);
    font-weight: 500;
    line-height: 0.84;
    letter-spacing: -0.075em;
}

.hero-title span {
    display: block;
    color: var(--accent);
}

.hero-subtitle {
    margin-top: 35px;

    color: var(--text-soft);
    font-size: clamp(1rem, 2vw, 1.25rem);
}

.hero-quote {
    max-width: 540px;
    margin-top: 18px;

    color: var(--muted);
    font-size: 0.95rem;
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;

    margin-top: 38px;
}

.button {
    display: inline-flex;
    align-items: center;
    justify-content: center;

    min-height: 50px;
    padding: 0 24px;

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

    font-size: 0.78rem;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;

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

.button-primary {
    background: var(--accent);
    border-color: var(--accent);
    color: #080808;
}

.button-primary:hover {
    background: #c7ff72;
    border-color: #c7ff72;
    transform: translateY(-2px);
}

.button-secondary {
    color: var(--text);
}

.button-secondary:hover {
    background: var(--surface);
    border-color: #444;
    transform: translateY(-2px);
}

.hero-photo-wrapper {
    position: relative;
    justify-self: end;

    width: min(100%, 410px);
}

.hero-photo-wrapper::before {
    content: "";

    position: absolute;

    top: 18px;
    left: 18px;

    width: 100%;
    height: 100%;

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

    opacity: 0.35;

    pointer-events: none;
}

.hero-photo {
    position: relative;
    z-index: 1;

    width: 100%;
    aspect-ratio: 4 / 5;

    object-fit: cover;

    background: var(--surface);

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

    filter: grayscale(15%);

    transition:
        filter 500ms ease,
        transform 500ms ease;
}

.hero-photo-wrapper:hover .hero-photo {
    filter: grayscale(0%);
    transform: translate(-5px, -5px);
}

.photo-label {
    position: absolute;
    z-index: 2;

    bottom: 15px;
    left: 15px;

    padding: 7px 10px;

    background: rgba(8, 8, 8, 0.82);
    border: 1px solid var(--line-light);

    color: var(--muted);

    font-size: 0.65rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
}


.scroll-indicator {
    position: absolute;

    bottom: 35px;
    left: 50%;

    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;

    transform: translateX(-50%);

    color: var(--muted);
    font-size: 0.6rem;
    letter-spacing: 0.15em;
    text-transform: uppercase;
}

.scroll-line {
    width: 1px;
    height: 42px;

    background: linear-gradient(
        to bottom,
        var(--accent),
        transparent
    );

    animation: scrollPulse 2s ease-in-out infinite;
}

@keyframes scrollPulse {
    0%,
    100% {
        opacity: 0.35;
        transform: scaleY(0.7);
        transform-origin: top;
    }

    50% {
        opacity: 1;
        transform: scaleY(1);
    }
}


.about-content {
    display: grid;
    grid-template-columns: 220px 1fr;
    gap: 50px;
}

.about-label {
    color: var(--muted);
    font-size: 0.75rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
}

.about-text {
    max-width: 850px;
}

.about-text p {
    margin-bottom: 24px;

    color: var(--text-soft);
    font-size: clamp(1.05rem, 2vw, 1.3rem);
    line-height: 1.75;
}

.about-text p:first-child {
    color: var(--text);
}


.tech-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1px;

    background: var(--line);
    border: 1px solid var(--line);
}

.tech-group {
    min-height: 270px;
    padding: 35px;

    background: var(--bg);
    transition: background var(--transition);
}

.tech-group:hover {
    background: var(--surface);
}

.tech-group-number {
    color: var(--accent);
    font-family: var(--font-display);
    font-size: 0.7rem;
    letter-spacing: 0.15em;
}

.tech-group h3 {
    margin-top: 45px;

    font-family: var(--font-display);
    font-size: 1.3rem;
    font-weight: 500;
}

.tech-list {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;

    margin-top: 20px;
}

.tech-list li {
    padding: 7px 10px;

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

    color: var(--muted);

    font-size: 0.72rem;
    transition:
        color var(--transition),
        border-color var(--transition);
}

.tech-list li:hover {
    color: var(--accent);
    border-color: var(--accent-dark);
}


.projects-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1px;

    background: var(--line);
    border: 1px solid var(--line);
}

.project-card {
    position: relative;

    min-height: 390px;
    padding: 38px;

    display: flex;
    flex-direction: column;
    justify-content: space-between;

    background: var(--bg);

    transition:
        background var(--transition),
        transform var(--transition);
}

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

.project-card.featured {
    grid-column: span 2;
    min-height: 430px;
}

.project-top {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;

    gap: 20px;
}

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

    font-family: var(--font-display);
    font-size: 0.72rem;
    letter-spacing: 0.15em;
}

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

    font-size: 0.65rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

.project-title {
    margin-top: auto;
    padding-top: 70px;

    font-family: var(--font-display);
    font-size: clamp(2rem, 4vw, 3.8rem);
    font-weight: 500;
    line-height: 0.95;
    letter-spacing: -0.04em;
}

.project-description {
    max-width: 650px;
    margin-top: 20px;

    color: var(--muted);
    font-size: 0.9rem;
}

.project-tech {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;

    margin-top: 28px;
}

.project-tech span {
    color: #aaa;

    font-size: 0.65rem;
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

.project-tech span:not(:last-child)::after {
    content: " / ";
    margin-left: 8px;
    color: #444;
}

.project-arrow {
    position: absolute;

    right: 35px;
    bottom: 35px;

    width: 42px;
    height: 42px;

    display: grid;
    place-items: center;

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

    color: var(--muted);

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

.project-card:hover .project-arrow {
    background: var(--accent);
    border-color: var(--accent);
    color: #000;
    transform: translate(3px, -3px);
}


.education-item {
    display: grid;
    grid-template-columns: 220px 1fr;
    gap: 50px;

    padding: 35px 0;

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

.education-item:last-child {
    border-bottom: 1px solid var(--line);
}

.education-year {
    color: var(--muted);

    font-size: 0.75rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

.education-title {
    font-family: var(--font-display);
    font-size: clamp(1.7rem, 3vw, 2.6rem);
    font-weight: 500;
    line-height: 1;
}

.education-school {
    margin-top: 12px;
    color: var(--muted);
}


.current-project {
    position: relative;

    padding: 60px;

    border: 1px solid var(--line);
    background:
        linear-gradient(
            135deg,
            rgba(183, 255, 74, 0.04),
            transparent 55%
        ),
        var(--bg);
}

.current-project::before {
    content: "";

    position: absolute;
    top: 0;
    left: 0;

    width: 4px;
    height: 100%;

    background: var(--accent);
}

.current-label {
    color: var(--accent);

    font-size: 0.7rem;
    font-weight: 600;
    letter-spacing: 0.15em;
    text-transform: uppercase;
}

.current-title {
    max-width: 800px;
    margin-top: 20px;

    font-family: var(--font-display);
    font-size: clamp(2.4rem, 5vw, 5rem);
    font-weight: 500;
    line-height: 0.95;
    letter-spacing: -0.05em;
}

.current-description {
    max-width: 750px;
    margin-top: 25px;

    color: var(--muted);
    font-size: 1rem;
}

.current-status {
    display: inline-flex;
    align-items: center;
    gap: 8px;

    margin-top: 35px;

    color: var(--accent);

    font-size: 0.7rem;
    letter-spacing: 0.1em;
}

.current-status::first-letter {
    color: var(--accent);
}


.contact {
    padding-bottom: 100px;
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr auto;
    align-items: end;
    gap: 50px;
}

.contact-title {
    max-width: 900px;

    font-family: var(--font-display);
    font-size: clamp(3rem, 8vw, 8rem);
    font-weight: 500;
    line-height: 0.88;
    letter-spacing: -0.07em;
}

.contact-title span {
    color: var(--accent);
}

.contact-text {
    max-width: 550px;
    margin-top: 30px;

    color: var(--muted);
}

.contact-links {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 15px;
}

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

    font-family: var(--font-display);
    font-size: 1rem;

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

    padding-bottom: 6px;

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

.contact-link:hover {
    color: var(--accent);
    border-color: var(--accent);
}


.footer {
    border-top: 1px solid var(--line);
    padding: 28px 0;
}

.footer-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
}

.footer p {
    color: var(--muted);
    font-size: 0.7rem;
}

.footer-brand {
    font-family: var(--font-display);
    color: var(--text);
    font-size: 0.75rem;
    letter-spacing: 0.08em;
}


a:focus-visible,
button:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 4px;
}


@keyframes heroAppear {
    from {
        opacity: 0;
        transform: translateY(25px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero-eyebrow,
.hero-title,
.hero-subtitle,
.hero-quote,
.hero-actions,
.hero-photo-wrapper {
    animation: heroAppear 800ms ease both;
}

.hero-title {
    animation-delay: 100ms;
}

.hero-subtitle {
    animation-delay: 180ms;
}

.hero-quote {
    animation-delay: 240ms;
}

.hero-actions {
    animation-delay: 300ms;
}

.hero-photo-wrapper {
    animation-delay: 180ms;
}


@media (max-width: 900px) {

    .container {
        width: min(calc(100% - 36px), var(--max-width));
    }

    .section {
        padding: 100px 0;
    }

    .hero-grid {
        grid-template-columns: 1fr;
        gap: 60px;
    }

    .hero-photo-wrapper {
        justify-self: start;
        width: min(100%, 360px);
    }

    .section-header,
    .about-content,
    .education-item {
        grid-template-columns: 1fr;
        gap: 20px;
    }

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

    .tech-group {
        min-height: auto;
    }

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

    .project-card.featured {
        grid-column: span 1;
    }

    .contact-grid {
        grid-template-columns: 1fr;
        align-items: start;
    }

    .contact-links {
        align-items: flex-start;
    }
}


@media (max-width: 650px) {

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

    .navbar {
        min-height: 68px;
    }

    .nav-links {
        position: absolute;

        top: 68px;
        left: 14px;
        right: 14px;

        display: none;
        flex-direction: column;
        align-items: stretch;
        gap: 0;

        padding: 8px;

        background: rgba(17, 17, 17, 0.97);
        border: 1px solid var(--line);

        backdrop-filter: blur(20px);
    }

    .nav-links.active {
        display: flex;
    }

    .nav-links a {
        padding: 15px 12px;
    }

    .nav-links a::after {
        display: none;
    }

    .menu-button {
        display: grid;
        place-items: center;
    }

    .hero {
        min-height: auto;
        padding: 130px 0 100px;
    }

    .hero-title {
        font-size: clamp(3.4rem, 16vw, 5.5rem);
    }

    .hero-photo-wrapper {
        width: min(100%, 320px);
        margin-top: 15px;
    }

    .section {
        padding: 80px 0;
    }

    .section-header {
        margin-bottom: 45px;
    }

    .section-title {
        font-size: clamp(2.6rem, 13vw, 4rem);
    }

    .about-text p {
        font-size: 1rem;
        line-height: 1.7;
    }

    .tech-group {
        padding: 28px;
    }

    .tech-group h3 {
        margin-top: 30px;
    }

    .project-card,
    .project-card.featured {
        min-height: 360px;
        padding: 28px;
    }

    .project-title {
        padding-top: 55px;
        font-size: 2.3rem;
    }

    .project-arrow {
        right: 25px;
        bottom: 25px;
    }

    .current-project {
        padding: 35px 28px;
    }

    .current-title {
        font-size: 2.7rem;
    }

    .contact-title {
        font-size: clamp(3.2rem, 15vw, 5rem);
    }

    .footer-content {
        flex-direction: column;
        align-items: flex-start;
    }

    .scroll-indicator {
        display: none;
    }
}

@media (prefers-reduced-motion: reduce) {

    html {
        scroll-behavior: auto;
    }

    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

.reveal {
    opacity: 0;
    transform: translateY(25px);

    transition:
        opacity 700ms ease,
        transform 700ms ease;
}

.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}