/* ===========================
   RESET & VARIABLES
   =========================== */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

:root {
    --font: 'Inter', -apple-system, system-ui, sans-serif;
    --black: #000;
    --white: #fff;
    --gray: #888;
    --light-gray: #e0e0e0;
    --page-pad: 20px;
}

html { scroll-behavior: smooth; }

body {
    font-family: var(--font);
    background: var(--white);
    color: var(--black);
    line-height: 1.5;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

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

::selection {
    background: var(--black);
    color: var(--white);
}

/* ===========================
   NAV
   =========================== */
nav {
    position: fixed;
    top: 0; left: 0; right: 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 28px;
    z-index: 100;
    background: var(--white);
}

.nav-name {
    font-size: 18px;
    font-weight: 700;
    letter-spacing: -0.01em;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 28px;
}

.nav-links a {
    font-size: 13px;
    font-weight: 500;
    letter-spacing: 0.04em;
    transition: opacity 0.2s;
}

.nav-links a:hover { opacity: 0.5; }

.hamburger {
    background: none;
    border: none;
    cursor: pointer;
    display: flex;
    flex-direction: column;
    gap: 5px;
    padding: 4px;
}

.hamburger span {
    display: block;
    width: 20px;
    height: 1.5px;
    background: var(--black);
}

/* ===========================
   MAIN LAYOUT — 3 columns
   =========================== */
main {
    min-height: 100vh;
    padding: 0 var(--page-pad);
    display: flex;
    gap: 32px;
}

/* LEFT COLUMN — sticky */
.left-col {
    width: 300px;
    min-width: 300px;
    height: 100vh;
    position: sticky;
    top: 0;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    padding: 100px 0 40px;
}

.intro h1 {
    font-size: clamp(60px, 7vw, 90px);
    font-weight: 600;
    line-height: 0.95;
    letter-spacing: -0.03em;
}

/* Socials — vertical icons below intro */
.socials {
    display: flex;
    flex-direction: column;
    gap: 14px;
    margin-top: 60px;
}

.socials a {
    color: var(--black);
    transition: opacity 0.2s;
    display: flex;
    align-items: center;
    width: fit-content;
}

.socials a:hover { opacity: 0.5; }

.socials svg {
    stroke: currentColor;
}

/* Filter section — on work page */
.filter-section {
    margin-top: 60px;
}

.filter-title {
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    color: var(--black);
    margin-bottom: 16px;
}

.filter-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.filter-btn {
    background: none;
    border: none;
    padding: 8px 0;
    text-align: left;
    font-size: 14px;
    font-weight: 300;
    color: var(--gray);
    cursor: pointer;
    transition: color 0.2s;
    font-family: var(--font);
    letter-spacing: -0.01em;
}

.filter-btn:hover {
    color: var(--black);
}

.filter-btn.active {
    color: var(--black);
    font-weight: 500;
}

/* Skills — bottom of left column */
.skills-list {
    display: flex;
    flex-direction: column;
    gap: 0;
}

.skills-list span {
    font-size: 16px;
    font-weight: 300;
    color: var(--black);
    padding: 14px 0;
    border-top: 1px solid var(--light-gray);
    letter-spacing: -0.01em;
}

/* CENTER COLUMN */
.center-col {
    flex: 1;
    display: flex;
    flex-direction: column;
    padding-top: 80px;
}

.section-title {
    font-size: 32px;
    font-weight: 700;
    letter-spacing: -0.03em;
    margin-bottom: 40px;
}

.story-section {
    margin-bottom: 48px;
}

.story-text {
    font-size: 15px;
    font-weight: 300;
    color: var(--black);
    line-height: 1.65;
    margin-bottom: 16px;
    letter-spacing: -0.01em;
}

.milestone-heading {
    font-size: 18px;
    font-weight: 600;
    letter-spacing: -0.02em;
    margin-bottom: 16px;
    margin-top: 32px;
}

.timeline {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.timeline-entry {
    display: flex;
    gap: 32px;
    padding-bottom: 24px;
    border-bottom: 1px solid var(--light-gray);
}

.timeline-entry:last-child {
    border-bottom: none;
}

.timeline-date {
    font-size: 13px;
    font-weight: 500;
    color: var(--gray);
    min-width: 140px;
    letter-spacing: -0.01em;
}

.timeline-event {
    font-size: 15px;
    font-weight: 300;
    color: var(--black);
    line-height: 1.55;
    letter-spacing: -0.01em;
}

.timeline-section {
    margin-top: 60px;
}

.timeline-markers {
    margin-top: 40px;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.timeline-item {
    display: flex;
    gap: 12px;
    align-items: flex-start;
}

.timeline-year {
    font-size: 13px;
    font-weight: 600;
    color: var(--gray);
    min-width: 50px;
}

.timeline-label {
    font-size: 13px;
    font-weight: 400;
    color: var(--black);
    letter-spacing: -0.01em;
}

.tagline {
    font-size: 14px;
    font-weight: 300;
    color: var(--gray);
    margin-bottom: 20px;
    padding-top: 10px;
}

.sections-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px 48px;
}

.section-block h3 {
    font-size: 15px;
    font-weight: 700;
    margin-bottom: 8px;
    letter-spacing: -0.02em;
}

.section-block ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.section-block li {
    font-size: 14px;
    font-weight: 300;
    color: var(--black);
    line-height: 1.55;
    padding-left: 22px;
    position: relative;
    letter-spacing: -0.01em;
}

.section-block li::before {
    content: '\2299';
    position: absolute;
    left: 0;
    font-size: 12px;
    top: 1px;
}

.section-block li a {
    font-weight: 500;
    color: var(--black);
    border-bottom: 1px solid var(--light-gray);
    transition: border-color 0.2s;
}

.section-block li a:hover {
    border-color: var(--black);
}

/* Photo — in center column */
.photo-area {
    margin-top: 40px;
}

.photo-placeholder {
    width: 100%;
    aspect-ratio: 4 / 5;
    background: #f5f5f5;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    color: var(--gray);
    font-weight: 400;
}

/* RIGHT COLUMN — sticky */
.right-col {
    width: 260px;
    min-width: 180px;
    height: 100vh;
    position: sticky;
    top: 0;
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    justify-content: space-between;
    padding: 100px 0 40px;
}

.right-top {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 16px;
}

.status-badge {
    font-size: 14px;
    font-weight: 400;
    letter-spacing: -0.01em;
}

.view-work {
    display: inline-block;
    padding: 12px 24px;
    background: var(--black);
    color: var(--white);
    font-size: 15px;
    font-weight: 500;
    border-radius: 999px;
    transition: opacity 0.2s, transform 0.2s;
    letter-spacing: -0.01em;
}

.view-work:hover {
    opacity: 0.85;
    transform: scale(1.03);
}

.location {
    font-size: 14px;
    color: var(--black);
    font-weight: 400;
    letter-spacing: -0.01em;
}

.right-bottom {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 4px;
}

.right-bottom a {
    font-size: 13px;
    font-weight: 400;
    color: var(--black);
    transition: opacity 0.2s;
}

.right-bottom a:hover { opacity: 0.5; }

.right-bottom span {
    font-size: 13px;
    color: var(--gray);
}

/* ===========================
   WORK SECTION — full width below
   =========================== */
.work-section {
    padding: 100px var(--page-pad);
    border-top: 1px solid var(--light-gray);
}

.work-heading {
    font-size: clamp(40px, 5vw, 60px);
    font-weight: 800;
    letter-spacing: -0.04em;
    margin-bottom: 60px;
}

.work-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}

.work-card {
    padding: 32px;
    border: 1px solid var(--light-gray);
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.work-card:hover {
    border-color: var(--black);
    transform: translateY(-3px);
    box-shadow: 0 12px 32px rgba(0,0,0,0.07);
}

.work-num {
    font-size: 12px;
    font-weight: 600;
    color: var(--gray);
}

.work-card h3 {
    font-size: 18px;
    font-weight: 700;
    letter-spacing: -0.02em;
}

.work-card p {
    font-size: 14px;
    font-weight: 300;
    color: var(--gray);
    line-height: 1.6;
}

.work-tag {
    font-size: 11px;
    font-weight: 500;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    color: var(--gray);
    margin-top: auto;
    padding-top: 10px;
}

/* ===========================
   PROJECT META — on project pages
   =========================== */
.project-meta {
    margin-top: 60px;
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.meta-item {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.meta-label {
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    color: var(--gray);
}

.meta-value {
    font-size: 14px;
    font-weight: 400;
    color: var(--black);
    letter-spacing: -0.01em;
}

/* ===========================
   PROJECT CONTENT
   =========================== */
.project-content {
    padding-top: 60px;
}

.project-section {
    margin-bottom: 60px;
}

.subsection {
    margin-top: 32px;
    padding-left: 20px;
    border-left: 2px solid var(--light-gray);
}

.subsection-title {
    font-size: 15px;
    font-weight: 600;
    letter-spacing: -0.02em;
    margin-bottom: 12px;
}

/* Project CTAs */
.project-cta {
    display: flex;
    flex-direction: column;
    gap: 16px;
    margin-top: 60px;
    padding-top: 40px;
    border-top: 1px solid var(--light-gray);
}

.cta-primary,
.cta-secondary {
    display: inline-block;
    padding: 12px 24px;
    font-size: 14px;
    font-weight: 500;
    letter-spacing: -0.01em;
    transition: opacity 0.2s, transform 0.2s;
    width: fit-content;
}

.cta-primary {
    background: var(--black);
    color: var(--white);
    border-radius: 999px;
}

.cta-primary:hover {
    opacity: 0.85;
    transform: scale(1.03);
}

.cta-secondary {
    color: var(--black);
    border-bottom: 1px solid var(--light-gray);
}

.cta-secondary:hover {
    border-color: var(--black);
}

/* ===========================
   TYPEWRITER
   =========================== */
.cursor {
    display: inline-block;
    animation: blink 0.8s step-end infinite;
    font-weight: 300;
    color: var(--gray);
    margin-left: 1px;
}

@keyframes blink {
    50% { opacity: 0; }
}

/* ===========================
   DARK FOOTER
   =========================== */
.dark-footer {
    background: var(--black);
    color: var(--white);
    padding: 60px 28px 24px;
}

.footer-top {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 60px;
}

.footer-left {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer-tagline {
    font-size: 14px;
    font-weight: 400;
    letter-spacing: 0.04em;
    color: rgba(255,255,255,0.7);
}

.footer-email {
    font-size: 14px;
    font-weight: 500;
    letter-spacing: 0.04em;
    color: var(--white);
    text-decoration: underline;
    text-underline-offset: 3px;
    transition: opacity 0.2s;
}

.footer-email:hover { opacity: 0.6; }

.footer-right {
    display: flex;
    gap: 80px;
}

.footer-col {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.footer-col-title {
    font-size: 12px;
    font-weight: 400;
    letter-spacing: 0.06em;
    color: rgba(255,255,255,0.4);
    margin-bottom: 4px;
}

.footer-col a {
    font-size: 13px;
    font-weight: 400;
    letter-spacing: 0.04em;
    color: var(--white);
    transition: opacity 0.2s;
}

.footer-col a:hover { opacity: 0.5; }

/* Marquee */
.marquee {
    overflow: hidden;
    white-space: nowrap;
    margin: 40px -28px;
}

.marquee-track {
    display: inline-flex;
    animation: scroll-left 20s linear infinite;
}

.marquee-track span {
    font-size: clamp(80px, 10vw, 140px);
    font-weight: 800;
    letter-spacing: -0.03em;
    color: var(--white);
    padding-right: 60px;
    flex-shrink: 0;
}

@keyframes scroll-left {
    0% { transform: translateX(0); }
    100% { transform: translateX(-50%); }
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 20px;
    font-size: 12px;
    font-weight: 400;
    letter-spacing: 0.04em;
    color: rgba(255,255,255,0.5);
}

/* ===========================
   SCROLL ANIMATIONS
   =========================== */
.section-block,
.work-card {
    opacity: 0;
    transform: translateY(16px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.section-block.visible,
.work-card.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Stagger */
.section-block:nth-child(1) { transition-delay: 0s; }
.section-block:nth-child(2) { transition-delay: 0.1s; }
.section-block:nth-child(3) { transition-delay: 0.2s; }
.section-block:nth-child(4) { transition-delay: 0.3s; }

.work-card:nth-child(1) { transition-delay: 0s; }
.work-card:nth-child(2) { transition-delay: 0.08s; }
.work-card:nth-child(3) { transition-delay: 0.16s; }
.work-card:nth-child(4) { transition-delay: 0.24s; }

/* ===========================
   RESPONSIVE
   =========================== */
@media (max-width: 1024px) {
    main {
        flex-direction: column;
        gap: 40px;
    }

    .left-col {
        width: 100%;
        min-width: unset;
        height: auto;
        position: static;
        padding: 100px 0 0;
    }

    .center-col {
        padding-top: 0;
    }

    .right-col {
        width: 100%;
        min-width: unset;
        height: auto;
        position: static;
        flex-direction: row;
        flex-wrap: wrap;
        align-items: center;
        justify-content: flex-start;
        gap: 16px;
        padding: 0 0 40px;
    }

    .right-top {
        flex-direction: row;
        align-items: center;
        gap: 16px;
    }

    .right-bottom {
        flex-direction: row;
        gap: 16px;
    }

    .socials {
        flex-direction: row;
        gap: 16px;
    }

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

@media (max-width: 640px) {
    :root { --page-pad: 16px; }
    nav { padding: 16px var(--page-pad); }
    .nav-links a:not(:last-of-type) { display: none; }
    .intro h1 { font-size: 52px; }
    .work-grid { grid-template-columns: 1fr; }
    .work-card { padding: 24px; }
    .skills-list span { font-size: 14px; }
}