:root {
    --bg: #07111f;
    --bg-soft: #0f1b2d;
    --surface: rgba(11, 24, 41, 0.8);
    --surface-strong: #10233d;
    --surface-warm: #16314d;
    --text: #f4f7fb;
    --muted: #adc0d6;
    --accent: #ff8a3d;
    --accent-soft: #ffd3ab;
    --line: rgba(199, 220, 255, 0.14);
    --shadow: 0 24px 60px rgba(0, 0, 0, 0.32);
    --radius-lg: 28px;
    --radius-md: 20px;
    --radius-sm: 14px;
    --content-width: min(1120px, calc(100% - 2rem));
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    color: var(--text);
    font-family: Georgia, "Times New Roman", serif;
    background:
        radial-gradient(circle at top left, rgba(255, 138, 61, 0.18), transparent 30%),
        radial-gradient(circle at top right, rgba(102, 193, 255, 0.16), transparent 28%),
        linear-gradient(180deg, #08111d 0%, #0c1828 50%, #07111f 100%);
    line-height: 1.6;
}

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

a {
    color: var(--accent-soft);
    text-decoration: none;
}

a:hover {
    color: #fff1e4;
}

p,
li {
    margin: 0;
    font-size: 1rem;
    color: var(--muted);
}

h1,
h2,
h3 {
    margin: 0;
    font-weight: 700;
    line-height: 1.1;
    color: var(--text);
}

ul {
    margin: 0;
    padding: 0;
    list-style: none;
}

.site-header {
    position: sticky;
    top: 0;
    z-index: 20;
    padding: 1rem 0 0;
}

.site-nav {
    width: var(--content-width);
    margin: 0 auto;
    padding: 0.95rem 1.2rem;
    border: 1px solid var(--line);
    border-radius: 999px;
    background: rgba(8, 17, 29, 0.78);
    backdrop-filter: blur(16px);
    box-shadow: var(--shadow);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
}

.brand {
    font-size: 0.98rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--text);
    white-space: nowrap;
}

.site-nav ul {
    display: flex;
    flex-wrap: wrap;
    justify-content: flex-end;
    gap: 1rem;
}

.site-nav a {
    color: var(--muted);
}

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

main,
.site-footer {
    width: var(--content-width);
    margin: 0 auto;
}

main {
    padding: 3rem 0 4rem;
}

.hero {
    min-height: calc(100vh - 7rem);
    display: grid;
    grid-template-columns: 1.15fr 0.85fr;
    align-items: center;
    gap: 2.5rem;
    padding: 2rem 0 3rem;
}

.hero-copy,
.portrait-card,
.work-card,
.info-panel,
.certificate-card,
.card-front,
.card-back,
.footer-content,
.footer-visual {
    border: 1px solid var(--line);
    background: var(--surface);
    box-shadow: var(--shadow);
}

.hero-copy {
    padding: 2.25rem;
    border-radius: var(--radius-lg);
}

.eyebrow {
    display: inline-block;
    margin-bottom: 1rem;
    color: var(--accent-soft);
    font-size: 0.82rem;
    letter-spacing: 0.18em;
    text-transform: uppercase;
}

.hero h1 {
    font-size: clamp(2.6rem, 5vw, 4.9rem);
    max-width: 12ch;
}

.lead {
    margin-top: 1.4rem;
    max-width: 62ch;
    font-size: 1.05rem;
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    margin: 2rem 0;
}

.button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 160px;
    padding: 0.9rem 1.35rem;
    border-radius: 999px;
    border: 1px solid transparent;
    font-weight: 700;
    transition: transform 0.25s ease, border-color 0.25s ease, background 0.25s ease;
}

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

.button-primary {
    background: linear-gradient(135deg, var(--accent), #ffb366);
    color: #1b1208;
}

.button-secondary {
    border-color: var(--line);
    background: rgba(255, 255, 255, 0.02);
    color: var(--text);
}

.highlights {
    display: grid;
    gap: 0.9rem;
}

.highlights li {
    position: relative;
    padding-left: 1.25rem;
}

.highlights li::before {
    content: "";
    position: absolute;
    left: 0;
    top: 0.65rem;
    width: 0.5rem;
    height: 0.5rem;
    border-radius: 50%;
    background: var(--accent);
    box-shadow: 0 0 0 0.3rem rgba(255, 138, 61, 0.14);
}

.portrait-card {
    padding: 1rem;
    border-radius: 32px;
    background:
        linear-gradient(180deg, rgba(255, 255, 255, 0.06), rgba(255, 255, 255, 0.02)),
        var(--surface);
}

#me {
    aspect-ratio: 4 / 5;
    width: 100%;
    object-fit: cover;
    border-radius: 24px;
}

.section {
    padding: 2rem 0;
}

.section + .section {
    margin-top: 1.5rem;
}

.section-heading {
    max-width: 60ch;
    margin-bottom: 1.6rem;
}

.section-heading h2 {
    font-size: clamp(2rem, 4vw, 3rem);
    margin-bottom: 0.75rem;
}

.project-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
}

.card {
    perspective: 1200px;
    min-height: 430px;
    cursor: pointer;
}

.card:focus-visible {
    outline: 3px solid rgba(255, 138, 61, 0.5);
    outline-offset: 4px;
    border-radius: var(--radius-md);
}

.card-inner {
    position: relative;
    width: 100%;
    min-height: 430px;
    transition: transform 0.8s ease;
    transform-style: preserve-3d;
}

.card.flipped .card-inner {
    transform: rotateY(180deg);
}

.card-front,
.card-back {
    position: absolute;
    inset: 0;
    border-radius: var(--radius-md);
    overflow: hidden;
    backface-visibility: hidden;
}

.card-front {
    display: grid;
    grid-template-rows: auto 1fr;
    background:
        linear-gradient(180deg, rgba(255, 255, 255, 0.04), rgba(255, 255, 255, 0)),
        linear-gradient(135deg, rgba(22, 49, 77, 0.96), rgba(10, 28, 48, 0.96));
}

.card-front-copy {
    padding: 1.4rem 1.4rem 1rem;
}

.tag {
    display: inline-flex;
    padding: 0.35rem 0.7rem;
    margin-bottom: 0.8rem;
    border-radius: 999px;
    background: rgba(255, 138, 61, 0.15);
    color: var(--accent-soft);
    font-size: 0.82rem;
    letter-spacing: 0.05em;
}

.card-front h3,
.card-back h3,
.certificate-copy h3,
.info-panel h3 {
    font-size: 1.4rem;
    margin-bottom: 0.7rem;
}

.card-front video {
    width: calc(100% - 1.4rem);
    height: 100%;
    max-height: 230px;
    margin: 0 0.7rem 0.7rem;
    object-fit: cover;
    border-radius: 18px;
    background: #000;
}

.card-back {
    transform: rotateY(180deg);
    padding: 1.5rem;
    background:
        linear-gradient(160deg, rgba(255, 138, 61, 0.18), transparent 60%),
        linear-gradient(135deg, rgba(12, 25, 43, 0.98), rgba(18, 41, 67, 0.98));
}

.card-back ul {
    display: grid;
    gap: 0.9rem;
    margin-top: 1rem;
}

.certificate-grid,
.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 1.25rem;
}

.certificate-card {
    display: grid;
    gap: 1rem;
    padding: 1rem;
    border-radius: var(--radius-md);
    transition: transform 0.25s ease, border-color 0.25s ease;
}

.certificate-card:hover,
.certificate-card:focus-visible {
    transform: translateY(-4px);
    border-color: rgba(255, 138, 61, 0.35);
}

.certpic {
    width: 100%;
    border-radius: 16px;
    object-fit: cover;
}

.certificate-copy {
    padding: 0.25rem 0.2rem 0.1rem;
}

.info-panel,
.work-card {
    border-radius: var(--radius-md);
    padding: 1.35rem;
}

.site-footer {
    padding: 0 0 3rem;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
}

.footer-visual,
.footer-content {
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.footer-visual {
    min-height: 100%;
}

#setup {
    width: 100%;
    height: 100%;
    min-height: 320px;
    object-fit: cover;
}

.footer-content {
    padding: 2rem;
}

.footer-content h2 {
    font-size: clamp(1.8rem, 3vw, 2.5rem);
    margin-bottom: 0.8rem;
}

.contact-links {
    display: flex;
    flex-wrap: wrap;
    gap: 0.9rem;
    margin: 1.5rem 0;
}

.contact-image {
    width: 54px;
    height: 54px;
    padding: 0.8rem;
    border-radius: 50%;
    border: 1px solid var(--line);
    background: rgba(255, 255, 255, 0.04);
    transition: transform 0.25s ease, background 0.25s ease, border-color 0.25s ease;
}

.contact-image:hover,
.contact-image:focus-visible {
    transform: translateY(-3px);
    background: rgba(255, 138, 61, 0.14);
    border-color: rgba(255, 138, 61, 0.32);
}

.copyright {
    font-size: 0.92rem;
}

@media (max-width: 960px) {
    .site-nav {
        border-radius: 28px;
        align-items: flex-start;
        flex-direction: column;
    }

    .site-nav ul {
        justify-content: flex-start;
    }

    .hero,
    .site-footer {
        grid-template-columns: 1fr;
    }

    .hero {
        min-height: auto;
        padding-top: 1rem;
    }
}

@media (max-width: 640px) {
    :root {
        --content-width: min(100% - 1rem, 1120px);
    }

    .site-header {
        padding-top: 0.6rem;
    }

    .site-nav {
        padding: 1rem;
    }

    .site-nav ul {
        gap: 0.75rem 1rem;
        font-size: 0.94rem;
    }

    main {
        padding-top: 2rem;
    }

    .hero-copy,
    .footer-content {
        padding: 1.4rem;
    }

    .hero h1 {
        max-width: none;
    }

    .button {
        width: 100%;
    }

    .card,
    .card-inner {
        min-height: 460px;
    }

    .card-front video {
        max-height: 200px;
    }

    #setup {
        min-height: 220px;
    }
}