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

:root {
    --bg: #FAF9F5;
    --text: #1A1A1A;
    --text-secondary: #6B6B6B;
    --border: #D6D3C8;
    --accent: #5C6B4F;
}

html {
    font-size: 16px;
}

body {
    background: var(--bg);
    color: var(--text);
    font-family: 'Source Sans 3', sans-serif;
    font-weight: 400;
    line-height: 1.6;
    letter-spacing: 0.02em;
    overflow-x: hidden;
}

h1, h2, h3 {
    font-family: 'Cormorant Garamond', serif;
    font-weight: 400;
    line-height: 1.2;
    letter-spacing: -0.01em;
}

a {
    color: var(--text);
    text-decoration: none;
    transition: color 200ms ease;
}

a:hover {
    color: var(--accent);
}

/* ── Scroll track ── */
.scroll-track {
    height: 600vh;
    position: relative;
}

/* ── Fixed viewport ── */
.viewport-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    overflow: hidden;
    z-index: 1;
}

/* ── Canvas ── */
.canvas {
    position: absolute;
    width: 400vw;
    height: 300vh;
    will-change: transform;
    visibility: hidden;
}

/* ── Sections ── */
.section {
    position: absolute;
    width: 100vw;
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.section-inner {
    width: 100%;
    max-width: 1200px;
    padding: clamp(40px, 6vw, 80px);
}

/* Section grid positions */
.section--hero     { left: 0;      top: 200vh; }
.section--projects { left: 100vw;  top: 200vh; }
.section--about    { left: 100vw;  top: 100vh; }
.section--skills   { left: 200vw;  top: 100vh; }
.section--blog     { left: 200vw;  top: 0;     }
.section--contact  { left: 300vw;  top: 0;     }

/* ── Hero ── */
.hero__name {
    font-size: clamp(2.5rem, 4vw, 5rem);
    margin-bottom: 16px;
}

.hero__tagline {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: 80px;
}

.hero__scroll-hint {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    color: var(--text-secondary);
    font-size: 0.8rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.hero__scroll-hint svg {
    width: 18px;
    height: 18px;
    animation: nudge-right 2.4s ease-in-out infinite;
}

@keyframes nudge-right {
    0%, 100% { transform: translateX(0); }
    50% { transform: translateX(5px); }
}

/* ── Projects ── */
.projects__heading {
    font-size: clamp(2rem, 3vw, 3.5rem);
    margin-bottom: 48px;
}

.projects__grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 24px;
}

.project-card {
    border: 1px solid var(--border);
    padding: 32px;
    transition: border-color 200ms ease;
    display: grid;
    grid-template-columns: minmax(220px, 38%) 1fr;
    gap: 32px;
    align-items: start;
}

.project-card:hover {
    border-color: var(--accent);
}

.project-card__thumbnail {
    width: 100%;
    height: 100%;
    min-height: 220px;
    margin-bottom: 0;
}

.project-card__title {
    font-family: 'Cormorant Garamond', serif;
    font-size: 1.6rem;
    font-weight: 400;
    margin-bottom: 4px;
}

.project-card__subtitle {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.78rem;
    color: var(--text-secondary);
    margin-bottom: 16px;
}

.project-card__description {
    color: var(--text-secondary);
    font-size: 0.95rem;
    margin-bottom: 20px;
}

.project-card__tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 20px;
}

.project-card__link {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.85rem;
    color: var(--accent);
    border-bottom: 1px solid var(--border);
    padding-bottom: 2px;
}

.tag {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.72rem;
    font-weight: 400;
    color: var(--text-secondary);
    border: 1px solid var(--border);
    padding: 3px 10px;
}

/* ── About ── */
.about__heading {
    font-size: clamp(2rem, 3vw, 3.5rem);
    margin-bottom: 48px;
}

.about__content {
    display: block;
}

.about__bio {
    max-width: 760px;
}

.about__bio p {
    color: var(--text-secondary);
    font-size: 1rem;
    margin-bottom: 14px;
}

.about__bio p:last-child {
    margin-bottom: 0;
}

/* ── Skills ── */
.skills__heading {
    font-size: clamp(2rem, 3vw, 3.5rem);
    margin-bottom: 48px;
}

.skills__categories {
    display: flex;
    flex-direction: column;
    gap: 32px;
}

.skills__category-name {
    font-family: 'Source Sans 3', sans-serif;
    font-weight: 400;
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--text-secondary);
    margin-bottom: 12px;
}

.skills__tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.skill-tag {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.85em;
    font-weight: 400;
    padding: 8px 16px;
    border: 1px solid var(--border);
    transition: border-color 200ms ease, color 200ms ease;
    cursor: default;
}

.skill-tag:hover {
    border-color: var(--accent);
    color: var(--accent);
}

/* ── Blog ── */
.blog__heading {
    font-size: clamp(2rem, 3vw, 3.5rem);
    margin-bottom: 48px;
}

.blog__list {
    display: flex;
    flex-direction: column;
}

.blog-entry {
    padding: 24px 0;
    border-top: 1px solid var(--border);
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    gap: 32px;
    border-left: 3px solid transparent;
    padding-left: 0;
    transition: border-color 200ms ease, padding-left 200ms ease;
}

.blog-entry:last-child {
    border-bottom: 1px solid var(--border);
}

.blog-entry:hover {
    border-left-color: var(--accent);
    padding-left: 16px;
}

.blog-entry__title {
    font-family: 'Cormorant Garamond', serif;
    font-size: 1.3rem;
    font-weight: 400;
    margin-bottom: 4px;
}

.blog-entry__excerpt {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.blog-entry__date {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.72rem;
    font-weight: 400;
    color: var(--text-secondary);
    white-space: nowrap;
}

/* ── Contact ── */
.contact__heading {
    font-size: clamp(2rem, 3vw, 3.5rem);
    margin-bottom: 24px;
}

.contact__closing {
    color: var(--text-secondary);
    font-size: 1.05rem;
    margin-bottom: 48px;
    max-width: 460px;
}

.contact__links {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.contact__link {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    font-size: 1.05rem;
}

.contact__link svg {
    width: 18px;
    height: 18px;
    flex-shrink: 0;
}

.contact__email-text {
    border-bottom: 1px solid var(--text);
    padding-bottom: 1px;
    transition: border-color 200ms ease, color 200ms ease;
}

.contact__link:hover .contact__email-text {
    color: var(--accent);
    border-color: var(--accent);
}

/* ── Navigation ── */
.nav {
    position: fixed;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    z-index: 100;
    display: flex;
    flex-direction: column;
    gap: 14px;
    background: var(--bg);
    padding: 24px 20px 24px 24px;
}

.nav__item {
    font-family: 'Source Sans 3', sans-serif;
    font-size: 0.7rem;
    font-weight: 400;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--text-secondary);
    cursor: pointer;
    transition: color 300ms ease;
    background: none;
    border: none;
    text-align: left;
    padding: 3px 0;
    position: relative;
    padding-left: 16px;
}

.nav__item::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 4px;
    height: 4px;
    border-radius: 50%;
    background: var(--accent);
    opacity: 0;
    transition: opacity 300ms ease;
}

.nav__item:hover {
    color: var(--text);
}

.nav__item.is-active {
    color: var(--accent);
}

.nav__item.is-active::before {
    opacity: 1;
}

/* ── Direction arrow ── */
.direction-arrow {
    position: fixed;
    bottom: 32px;
    right: 32px;
    z-index: 100;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform 400ms ease, opacity 300ms ease;
}

.direction-arrow svg {
    width: 20px;
    height: 20px;
    stroke: var(--border);
}

.direction-arrow.point-up {
    transform: rotate(-90deg);
}

/* ── Responsive ── */

/* Tablet & Mobile — Structural override: vertical scroll instead of zigzag */
@media (max-width: 1023px) {
    .scroll-track {
        display: none;
    }

    .viewport-container {
        position: relative;
        width: 100%;
        height: auto;
    }

    .canvas {
        position: relative;
        width: 100%;
        height: auto;
        visibility: visible !important;
        transform: none !important;
    }

    .canvas .section {
        position: relative;
        left: 0;
        top: 0;
        width: 100%;
        height: auto;
        min-height: 100vh;
    }

    .nav,
    .direction-arrow {
        display: none;
    }
}

/* Reserve horizontal space for the fixed left nav whenever it's visible */
@media (min-width: 768px) {
    .section-inner {
        padding-left: 170px;
    }
}

/* Tablet — Refined spacing and proportions */
@media (min-width: 768px) and (max-width: 1023px) {
    .section-inner {
        padding: 80px 48px 80px 170px;
    }

    .hero__name {
        font-size: clamp(2.2rem, 5vw, 3.5rem);
    }

    .hero__tagline {
        font-size: 1.15rem;
        margin-bottom: 56px;
    }
}

/* Mobile — Compact single-column layouts */
@media (max-width: 767px) {
    .section-inner {
        padding: 64px 24px;
    }

    .hero__tagline {
        margin-bottom: 48px;
    }

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

    .project-card {
        grid-template-columns: 1fr;
        gap: 20px;
        padding: 24px;
    }

    .project-card__thumbnail {
        min-height: 160px;
    }

    .about__bio {
        max-width: 100%;
    }

    .blog-entry {
        flex-direction: column;
        gap: 8px;
    }
}