:root {
    --background: #07101d;
    --surface: #0d1929;
    --surface-light: #122238;
    --text: #f4f8ff;
    --muted: #9aabc0;
    --blue: #4ca8ff;
    --blue-light: #83c5ff;
    --line: rgba(148, 177, 211, 0.18);
    --max-width: 1160px;
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    background:
        radial-gradient(circle at 85% 8%, rgba(51, 138, 255, 0.14), transparent 25rem),
        var(--background);
    color: var(--text);
    font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    line-height: 1.7;
}

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

.site-header,
main,
footer {
    width: min(calc(100% - 40px), var(--max-width));
    margin-inline: auto;
}

.site-header {
    min-height: 78px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-bottom: 1px solid var(--line);
}

.logo {
    font-size: 1.25rem;
    font-weight: 800;
    letter-spacing: -0.04em;
}

.logo span,
.hero h1 span {
    color: var(--blue);
}

nav {
    display: flex;
    gap: 1.7rem;
}

nav a,
footer a {
    color: var(--muted);
    font-size: 0.88rem;
    font-weight: 600;
    transition: color 160ms ease;
}

nav a:hover,
nav a:focus-visible,
footer a:hover,
footer a:focus-visible {
    color: var(--text);
}

.section {
    padding: 110px 0;
    border-bottom: 1px solid var(--line);
}

.hero {
    min-height: calc(100vh - 78px);
    display: grid;
    grid-template-columns: 1.15fr 0.85fr;
    align-items: center;
    gap: 6rem;
}

.eyebrow,
.card-label {
    margin: 0 0 1rem;
    color: var(--blue-light);
    font-size: 0.72rem;
    font-weight: 800;
    letter-spacing: 0.18em;
}

.hero h1 {
    margin: 0;
    font-size: clamp(4.5rem, 10vw, 8rem);
    line-height: 0.83;
    letter-spacing: -0.075em;
}

.intro {
    max-width: 620px;
    margin: 2.2rem 0 0;
    color: var(--muted);
    font-size: clamp(1.05rem, 2vw, 1.28rem);
}

.hero-actions {
    display: flex;
    gap: 0.8rem;
    margin-top: 2.3rem;
}

.button {
    min-height: 50px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 1.35rem;
    border: 1px solid transparent;
    border-radius: 10px;
    font-weight: 750;
    transition: transform 160ms ease, background 160ms ease, border-color 160ms ease;
}

.button:hover,
.button:focus-visible {
    transform: translateY(-2px);
}

.button.primary {
    background: var(--blue);
    color: #04101e;
}

.button.primary:hover,
.button.primary:focus-visible {
    background: var(--blue-light);
}

.button.secondary {
    border-color: var(--line);
    background: rgba(255, 255, 255, 0.025);
}

.button.secondary:hover,
.button.secondary:focus-visible {
    border-color: var(--blue);
}

.profile-card {
    position: relative;
    min-height: 460px;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    padding: 1.4rem;
    overflow: hidden;
    border: 1px solid var(--line);
    border-radius: 24px;
    background:
        linear-gradient(to top, #091423 8%, transparent 70%),
        linear-gradient(145deg, #17304d, #0b1727);
    box-shadow: 0 30px 90px rgba(0, 0, 0, 0.3);
}

.profile-card::before {
    content: "";
    position: absolute;
    width: 260px;
    height: 260px;
    top: 16%;
    right: -10%;
    border: 1px solid rgba(76, 168, 255, 0.35);
    border-radius: 50%;
    box-shadow: 0 0 100px rgba(76, 168, 255, 0.16);
}

.profile-placeholder {
    position: absolute;
    inset: 0;
    display: grid;
    place-items: center;
    color: rgba(255, 255, 255, 0.055);
    font-size: 10rem;
    font-weight: 900;
    letter-spacing: -0.08em;
}

.profile-card > div:last-child {
    position: relative;
}

.profile-card h2,
.profile-card p {
    margin: 0;
}

.profile-card h2 {
    font-size: 1.45rem;
}

.profile-card p:not(.status) {
    color: var(--muted);
}

.status {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.65rem !important;
    color: #a8f0ca;
    font-size: 0.78rem;
    font-weight: 700;
}

.status span {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: #5ee7a1;
    box-shadow: 0 0 12px #5ee7a1;
}

.section-heading {
    display: flex;
    align-items: flex-start;
    gap: 1.6rem;
    margin-bottom: 4rem;
}

.section-heading h2,
.contact-section h2 {
    margin: 0;
    font-size: clamp(2.3rem, 5vw, 4.1rem);
    line-height: 1.05;
    letter-spacing: -0.055em;
}

.section-number {
    margin: 0.35rem 0 0;
    color: var(--blue);
    font-size: 0.8rem;
    font-weight: 800;
}

.about-grid {
    display: grid;
    grid-template-columns: 1.25fr 0.75fr;
    gap: 7rem;
}

.about-text p {
    margin: 0 0 1.2rem;
    color: #c2cddd;
    font-size: 1.12rem;
}

.quality-list > div {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem 0;
    border-bottom: 1px solid var(--line);
}

.quality-list span {
    color: var(--blue);
    font-size: 0.72rem;
}

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

.timeline-item {
    display: grid;
    grid-template-columns: 190px 1fr;
    gap: 3rem;
    padding: 2.5rem 0;
    border-bottom: 1px solid var(--line);
}

.date,
.role,
.timeline-item div > p:last-child,
.card > p:last-child,
.project-card > p:not(.card-label) {
    color: var(--muted);
}

.date {
    margin: 0.2rem 0 0;
    font-size: 0.82rem;
    font-weight: 700;
}

.timeline-item h3,
.card h3,
.skill-card h3,
.project-card h3 {
    margin: 0 0 0.35rem;
    font-size: 1.35rem;
}

.timeline-item p {
    max-width: 740px;
    margin-top: 0.6rem;
}

.role {
    margin: 0 !important;
    font-weight: 650;
}

.education-grid,
.skills-grid,
.projects-grid {
    display: grid;
    gap: 1rem;
}

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

.card,
.skill-card,
.project-card {
    padding: 2rem;
    border: 1px solid var(--line);
    border-radius: 16px;
    background: rgba(13, 25, 41, 0.7);
}

.featured-card {
    background: linear-gradient(135deg, rgba(76, 168, 255, 0.13), rgba(13, 25, 41, 0.7));
}

.skill-card {
    min-height: 280px;
}

.skill-icon {
    display: inline-block;
    margin-bottom: 2.8rem;
    color: var(--blue);
    font-size: 0.8rem;
    font-weight: 800;
}

.skill-card ul {
    margin: 1rem 0 0;
    padding: 0;
    list-style: none;
}

.skill-card li {
    padding: 0.27rem 0;
    color: var(--muted);
}

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

.project-main {
    grid-column: span 2;
    min-height: 330px;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    background:
        radial-gradient(circle at 88% 20%, rgba(76, 168, 255, 0.22), transparent 17rem),
        var(--surface);
}

.project-card > p:not(.card-label) {
    max-width: 640px;
}

.tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-top: 1.4rem;
}

.tags span {
    padding: 0.32rem 0.65rem;
    border: 1px solid var(--line);
    border-radius: 999px;
    color: var(--blue-light);
    font-size: 0.72rem;
    font-weight: 700;
}

.contact-section {
    text-align: center;
}

.contact-section > p:not(.eyebrow) {
    max-width: 620px;
    margin: 1.4rem auto 2.2rem;
    color: var(--muted);
    font-size: 1.08rem;
}

footer {
    min-height: 120px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 2rem;
}

footer p {
    color: var(--muted);
    font-size: 0.82rem;
}

@media (max-width: 850px) {
    nav {
        display: none;
    }

    .hero {
        min-height: auto;
        grid-template-columns: 1fr;
        gap: 4rem;
        padding-top: 90px;
    }

    .profile-card {
        min-height: 390px;
    }

    .about-grid {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
}

@media (max-width: 620px) {
    .site-header,
    main,
    footer {
        width: min(calc(100% - 28px), var(--max-width));
    }

    .section {
        padding: 78px 0;
    }

    .hero h1 {
        font-size: clamp(4rem, 22vw, 6rem);
    }

    .hero-actions {
        flex-direction: column;
    }

    .button {
        width: 100%;
    }

    .profile-card {
        min-height: 330px;
    }

    .profile-placeholder {
        font-size: 7rem;
    }

    .section-heading {
        margin-bottom: 2.7rem;
    }

    .timeline-item,
    .education-grid,
    .skills-grid,
    .projects-grid {
        grid-template-columns: 1fr;
    }

    .timeline-item {
        gap: 0.7rem;
    }

    .project-main {
        grid-column: auto;
    }

    footer {
        flex-direction: column;
        justify-content: center;
        padding: 2.5rem 0;
        text-align: center;
    }
}

@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }

    * {
        transition: none !important;
    }
}