/* ═══════════════════════════════════════════════════
   YOUR NAME — Personal Academic Site
   Warm beige palette · Editorial typography · Artistic details
   ═══════════════════════════════════════════════════ */

@import url('https://fonts.googleapis.com/css2?family=Instrument+Serif:ital@0;1&family=DM+Sans:ital,opsz,wght@0,9..40,300;0,9..40,400;0,9..40,500;0,9..40,600;1,9..40,300;1,9..40,400&family=JetBrains+Mono:wght@400;500&display=swap');

:root {
    --bg:         #F5F0E8;
    --bg-warm:    #EDE7DB;
    --bg-card:    #FAF7F2;
    --bg-cream:   #FDFBF7;
    --text:       #2C2A25;
    --text-soft:  #6E6B63;
    --text-faint: #9C9890;
    --accent:     #B8452A;
    --accent-soft: rgba(184,69,42,0.1);
    --accent-glow: rgba(184,69,42,0.06);
    --border:     #DBD5C9;
    --border-light:#E8E3D9;
    --ink:        #3A3835;

    --serif:  'Instrument Serif', Georgia, serif;
    --sans:   'DM Sans', -apple-system, sans-serif;
    --mono:   'JetBrains Mono', monospace;

    --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
    --ease-smooth: cubic-bezier(0.4, 0, 0.2, 1);
}

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

html { scroll-behavior: smooth; font-size: 16px; }

body {
    font-family: var(--sans);
    background: var(--bg);
    color: var(--text);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
    position: relative;
}

/* paper texture overlay */
body::before {
    content: '';
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 9999;
    opacity: 0.3;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.8' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.3'/%3E%3C/svg%3E");
    background-size: 200px;
}

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

a {
    color: var(--accent);
    text-decoration: none;
    transition: opacity 0.25s var(--ease-smooth);
}
a:hover { opacity: 0.7; }

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

/* ═══════════════════════════════════════
   NAVIGATION
   ═══════════════════════════════════════ */
nav {
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    padding: 0 2.5rem;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    transition: all 0.4s var(--ease-smooth);
    background: transparent;
}
nav.scrolled {
    background: rgba(245, 240, 232, 0.88);
    backdrop-filter: blur(20px) saturate(1.4);
    -webkit-backdrop-filter: blur(20px) saturate(1.4);
    box-shadow: 0 1px 0 var(--border-light);
}
.nav-name {
    font-family: var(--serif);
    font-size: 1.15rem;
    color: var(--text);
    letter-spacing: -0.02em;
}
.nav-name em {
    font-style: italic;
    color: var(--accent);
}
.nav-links {
    display: flex;
    gap: 0.25rem;
    list-style: none;
}
.nav-links a {
    color: var(--text-soft);
    font-size: 0.82rem;
    font-weight: 500;
    padding: 0.4rem 0.85rem;
    border-radius: 8px;
    transition: all 0.25s var(--ease-smooth);
    letter-spacing: 0.01em;
}
.nav-links a:hover,
.nav-links a.active {
    color: var(--text);
    background: var(--accent-soft);
    opacity: 1;
}

/* mobile nav toggle */
.nav-toggle { display: none; cursor: pointer; padding: 0.5rem; }
.nav-toggle span {
    display: block;
    width: 20px;
    height: 1.5px;
    background: var(--text);
    margin: 5px 0;
    transition: all 0.3s;
}

/* ═══════════════════════════════════════
   PAGE WRAPPER
   ═══════════════════════════════════════ */
.page {
    max-width: 820px;
    margin: 0 auto;
    padding: 0 2rem;
}
.page-wide {
    max-width: 1060px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* ═══════════════════════════════════════
   SECTION HEADING
   ═══════════════════════════════════════ */
.section-tag {
    font-family: var(--mono);
    font-size: 0.7rem;
    font-weight: 500;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--accent);
    margin-bottom: 0.5rem;
    display: inline-flex;
    align-items: center;
    gap: 0.6rem;
}
.section-tag::before {
    content: '◆';
    font-size: 0.45rem;
    opacity: 0.7;
}
.section-heading {
    font-family: var(--serif);
    font-size: clamp(2rem, 4.5vw, 3rem);
    font-weight: 400;
    line-height: 1.12;
    letter-spacing: -0.03em;
    color: var(--text);
    margin-bottom: 1rem;
}
.section-desc {
    font-size: 1rem;
    color: var(--text-soft);
    max-width: 560px;
    line-height: 1.75;
    margin-bottom: 3rem;
}

/* ═══════════════════════════════════════
   HOME — HERO
   ═══════════════════════════════════════ */
.home-hero {
    padding-top: 10rem;
    padding-bottom: 4rem;
    display: grid;
    grid-template-columns: 1fr 280px;
    gap: 4rem;
    align-items: start;
}
.home-intro h1 {
    font-family: var(--serif);
    font-size: clamp(2.6rem, 5.5vw, 3.6rem);
    font-weight: 400;
    line-height: 1.08;
    letter-spacing: -0.035em;
    margin-bottom: 1.5rem;
}
.home-intro h1 em {
    font-style: italic;
    color: var(--accent);
}
.home-intro .bio {
    font-size: 1.02rem;
    color: var(--text-soft);
    line-height: 1.8;
    max-width: 500px;
    margin-bottom: 2rem;
}
.home-intro .bio strong {
    color: var(--text);
    font-weight: 500;
}

/* portrait */
.portrait-wrap {
    position: relative;
}
.portrait-frame {
    position: relative;
    border-radius: 14px;
    overflow: hidden;
    box-shadow: 0 20px 60px rgba(44,42,37,0.1);
}
.portrait-frame img {
    width: 100%;
    aspect-ratio: 3 / 4;
    object-fit: cover;
    transition: transform 0.6s var(--ease-out);
}
.portrait-frame:hover img { transform: scale(1.03); }
.portrait-deco {
    position: absolute;
    top: -10px;
    right: -10px;
    width: 100%;
    height: 100%;
    border: 1.5px solid var(--border);
    border-radius: 14px;
    z-index: -1;
    transition: transform 0.5s var(--ease-out);
}
.portrait-wrap:hover .portrait-deco { transform: translate(4px, -4px); }

/* contact pills */
.contact-row {
    display: flex;
    gap: 0.6rem;
    flex-wrap: wrap;
    margin-bottom: 3rem;
}
.pill {
    display: inline-flex;
    align-items: center;
    gap: 0.45rem;
    padding: 0.45rem 1rem;
    border: 1px solid var(--border);
    border-radius: 100px;
    font-size: 0.82rem;
    font-weight: 500;
    color: var(--text-soft);
    background: var(--bg-cream);
    transition: all 0.25s var(--ease-smooth);
}
.pill svg { width: 14px; height: 14px; flex-shrink: 0; }
.pill:hover {
    border-color: var(--accent);
    color: var(--accent);
    background: var(--accent-soft);
    opacity: 1;
}

/* ═══════════════════════════════════════
   HOME — SUMMARY SECTIONS
   ═══════════════════════════════════════ */
.home-section {
    padding: 3rem 0;
    border-top: 1px solid var(--border-light);
}
.home-section-header {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    margin-bottom: 1.5rem;
}
.home-section-header h2 {
    font-family: var(--serif);
    font-size: 1.6rem;
    font-weight: 400;
    letter-spacing: -0.02em;
}
.view-all {
    font-family: var(--mono);
    font-size: 0.72rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--accent);
    display: flex;
    align-items: center;
    gap: 0.4rem;
    font-weight: 500;
}
.view-all::after {
    content: '→';
    transition: transform 0.2s;
}
.view-all:hover::after { transform: translateX(3px); }

/* mini publication list (homepage) */
.pub-mini { display: flex; flex-direction: column; gap: 0.75rem; }
.pub-mini-item {
    padding: 1.1rem 1.4rem;
    background: var(--bg-cream);
    border: 1px solid var(--border-light);
    border-radius: 10px;
    transition: all 0.25s var(--ease-smooth);
}
.pub-mini-item:hover {
    border-color: var(--accent);
    box-shadow: 0 6px 24px var(--accent-glow);
    transform: translateY(-1px);
}
.pub-mini-title {
    font-family: var(--sans);
    font-size: 1.05rem;
    font-weight: 600;
    line-height: 1.35;
    margin-bottom: 0.25rem;
}
.pub-mini-title a { color: var(--text); }
.pub-mini-title a:hover { color: var(--accent); }
.pub-mini-meta {
    font-size: 0.82rem;
    color: var(--text-faint);
}
.pub-mini-meta strong { color: var(--text); font-weight: 600; }

/* mini experience list (homepage) */
.exp-mini { display: flex; flex-direction: column; gap: 0; }
.exp-mini-item {
    display: grid;
    grid-template-columns: 110px 1fr;
    gap: 1.5rem;
    padding: 1rem 0;
    border-bottom: 1px solid var(--border-light);
}
.exp-mini-item:last-child { border-bottom: none; }
.exp-mini-date {
    font-family: var(--mono);
    font-size: 0.75rem;
    color: var(--text-faint);
    padding-top: 0.15rem;
}
.exp-mini-info h3 {
    font-size: 0.95rem;
    font-weight: 600;
    line-height: 1.3;
}
.exp-mini-info .company {
    font-family: var(--serif);
    font-style: italic;
    color: var(--accent);
    font-size: 0.92rem;
}

/* mini awards (homepage) */
.awards-mini {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}
.award-chip {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.55rem 1rem;
    background: var(--bg-cream);
    border: 1px solid var(--border-light);
    border-radius: 10px;
    font-size: 0.85rem;
    color: var(--text);
    transition: all 0.25s var(--ease-smooth);
}
.award-chip:hover {
    border-color: var(--accent);
    transform: translateY(-1px);
}
.award-chip .chip-icon {
    font-size: 0.75rem;
    opacity: 0.6;
}

/* ═══════════════════════════════════════
   DETAIL PAGES — PAGE HEADER
   ═══════════════════════════════════════ */
.page-header {
    padding-top: 9rem;
    padding-bottom: 3rem;
}

/* ═══════════════════════════════════════
   PUBLICATIONS (detail page)
   ═══════════════════════════════════════ */
.pub-list-full { display: flex; flex-direction: column; gap: 1.25rem; padding-bottom: 5rem; }
.pub-card {
    display: grid;
    grid-template-columns: 200px 1fr;
    gap: 1.75rem;
    padding: 1.75rem;
    background: var(--bg-cream);
    border: 1px solid var(--border-light);
    border-radius: 14px;
    transition: all 0.3s var(--ease-smooth);
}
.pub-card:hover {
    border-color: var(--accent);
    box-shadow: 0 12px 40px var(--accent-glow);
    transform: translateY(-2px);
}
.pub-card-img {
    width: 100%;
    aspect-ratio: 4/3;
    background: var(--bg-warm);
    border-radius: 8px;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--mono);
    font-size: 0.7rem;
    color: var(--text-faint);
    position: relative;
}
.pub-card-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}
.pub-card-body {}
.pub-card-body h3 {
    font-family: var(--sans);
    font-size: 1.15rem;
    font-weight: 600;
    line-height: 1.35;
    margin-bottom: 0.4rem;
}
.pub-card-body h3 a { color: var(--text); }
.pub-card-body h3 a:hover { color: var(--accent); }
.pub-card-authors {
    font-size: 0.85rem;
    color: var(--text-soft);
    margin-bottom: 0.35rem;
    line-height: 1.5;
}
.pub-card-authors strong { color: var(--text); font-weight: 600; }
.pub-card-venue {
    font-family: var(--mono);
    font-size: 0.72rem;
    color: var(--accent);
    font-weight: 500;
    letter-spacing: 0.02em;
    margin-bottom: 0.75rem;
}
.pub-card-links { display: flex; gap: 0.5rem; flex-wrap: wrap; }
.btn-sm {
    font-size: 0.75rem;
    font-weight: 500;
    padding: 0.3rem 0.7rem;
    border-radius: 6px;
    background: var(--accent-soft);
    color: var(--accent);
    transition: all 0.2s var(--ease-smooth);
}
.btn-sm:hover { background: var(--accent); color: #fff; opacity: 1; }

/* ═══════════════════════════════════════
   EXPERIENCE (detail page)
   ═══════════════════════════════════════ */
.exp-timeline { padding-bottom: 5rem; }
.exp-full-item {
    display: grid;
    grid-template-columns: 160px 1fr;
    gap: 2.5rem;
    padding: 2.5rem 0;
    border-bottom: 1px solid var(--border-light);
    position: relative;
}
.exp-full-item:first-child { border-top: 1px solid var(--border-light); }
.exp-full-left {
    font-family: var(--mono);
    font-size: 0.78rem;
    color: var(--text-faint);
    line-height: 1.5;
}
.exp-full-left .exp-loc {
    display: block;
    margin-top: 0.25rem;
    font-family: var(--sans);
    font-style: italic;
    font-size: 0.82rem;
}
.exp-full-right h3 {
    font-size: 1.15rem;
    font-weight: 600;
    margin-bottom: 0.15rem;
}
.exp-full-right .exp-org {
    font-family: var(--serif);
    font-size: 1.1rem;
    font-style: italic;
    color: var(--accent);
    margin-bottom: 0.8rem;
}
.exp-full-right p {
    font-size: 0.92rem;
    color: var(--text-soft);
    line-height: 1.75;
    margin-bottom: 1rem;
}
.exp-full-right .exp-gallery {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: 0.75rem;
    margin-top: 1rem;
}
.exp-full-right .exp-gallery img {
    width: 100%;
    aspect-ratio: 16/10;
    object-fit: cover;
    border-radius: 8px;
    border: 1px solid var(--border-light);
}

/* compact photo gallery grid with click-to-enlarge */
.exp-gallery-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 0.5rem;
    margin-top: 1.25rem;
}
.exp-gallery-grid img {
    width: 100%;
    aspect-ratio: 1 / 1;
    object-fit: cover;
    border-radius: 8px;
    border: 1px solid var(--border-light);
    cursor: pointer;
    transition: all 0.25s var(--ease-smooth);
}
.exp-gallery-grid img:hover {
    transform: scale(1.04);
    box-shadow: 0 6px 20px rgba(0,0,0,0.08);
    border-color: var(--accent);
}

/* lightbox overlay */
.lightbox {
    display: none;
    position: fixed;
    inset: 0;
    z-index: 10000;
    background: rgba(20, 18, 15, 0.88);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    align-items: center;
    justify-content: center;
    cursor: zoom-out;
    padding: 2rem;
}
.lightbox.active {
    display: flex;
    animation: lbFadeIn 0.25s ease;
}
.lightbox img {
    max-width: 90vw;
    max-height: 88vh;
    border-radius: 12px;
    box-shadow: 0 24px 80px rgba(0,0,0,0.4);
    object-fit: contain;
}
.lightbox-close {
    position: absolute;
    top: 1.5rem;
    right: 2rem;
    color: rgba(255,255,255,0.7);
    font-size: 1.5rem;
    cursor: pointer;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: all 0.2s;
}
.lightbox-close:hover {
    color: #fff;
    background: rgba(255,255,255,0.1);
}
@keyframes lbFadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@media (max-width: 768px) {
    .exp-gallery-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* ═══════════════════════════════════════
   AWARDS (detail page)
   ═══════════════════════════════════════ */
.awards-full { padding-bottom: 5rem; }
.awards-year-group { margin-bottom: 2.5rem; }
.awards-year {
    font-family: var(--mono);
    font-size: 0.72rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--accent);
    margin-bottom: 0.75rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--border-light);
}
.award-full-item {
    padding: 1.25rem 1.5rem;
    background: var(--bg-cream);
    border: 1px solid var(--border-light);
    border-radius: 10px;
    margin-bottom: 0.6rem;
    display: flex;
    gap: 1rem;
    align-items: flex-start;
    transition: all 0.25s var(--ease-smooth);
}
.award-full-item:hover {
    border-color: var(--accent);
    transform: translateY(-1px);
    box-shadow: 0 6px 20px var(--accent-glow);
}
.award-full-icon {
    flex-shrink: 0;
    width: 36px;
    height: 36px;
    background: var(--accent-soft);
    border-radius: 9px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.9rem;
    color: var(--accent);
}
.award-full-info h3 { font-size: 0.95rem; font-weight: 600; margin-bottom: 0.1rem; }
.award-full-info p { font-size: 0.82rem; color: var(--text-soft); }

/* ═══════════════════════════════════════
   PROJECTS (detail page)
   ═══════════════════════════════════════ */
.projects-full { padding-bottom: 5rem; }
.project-full-card {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    padding: 2.5rem 0;
    border-bottom: 1px solid var(--border-light);
    align-items: center;
}
.project-full-card:first-child { border-top: 1px solid var(--border-light); }
.project-full-card:nth-child(even) { direction: rtl; }
.project-full-card:nth-child(even) > * { direction: ltr; }
.project-full-img {
    width: 100%;
    aspect-ratio: 16/10;
    background: var(--bg-warm);
    border-radius: 12px;
    overflow: hidden;
    border: 1px solid var(--border-light);
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--mono);
    font-size: 0.75rem;
    color: var(--text-faint);
}
.project-full-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}
.project-full-body h3 {
    font-family: var(--sans);
    font-size: 1.4rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    letter-spacing: -0.01em;
}
.project-full-body p {
    font-size: 0.92rem;
    color: var(--text-soft);
    line-height: 1.75;
    margin-bottom: 1rem;
}
.project-full-body .tags {
    display: flex;
    gap: 0.4rem;
    flex-wrap: wrap;
    margin-bottom: 1rem;
}
.tag {
    font-family: var(--mono);
    font-size: 0.68rem;
    padding: 0.2rem 0.55rem;
    background: var(--bg-warm);
    border-radius: 5px;
    color: var(--text-soft);
}
.project-full-body .project-link {
    font-size: 0.85rem;
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
}
.project-full-body .project-link::after { content: '→'; transition: transform 0.2s; }
.project-full-body .project-link:hover::after { transform: translateX(3px); }

/* ═══════════════════════════════════════
   FOOTER
   ═══════════════════════════════════════ */
footer {
    border-top: 1px solid var(--border);
    padding: 3rem 2rem;
    text-align: center;
}
footer .footer-inner {
    max-width: 500px;
    margin: 0 auto;
}
footer .footer-tagline {
    font-family: var(--serif);
    font-size: 1.3rem;
    color: var(--text);
    margin-bottom: 1rem;
    font-style: italic;
}
.footer-socials {
    display: flex;
    justify-content: center;
    gap: 0.75rem;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
}
.footer-socials a {
    color: var(--text-soft);
    font-size: 0.82rem;
    font-weight: 500;
    padding: 0.4rem 0.9rem;
    border: 1px solid var(--border);
    border-radius: 100px;
    transition: all 0.25s var(--ease-smooth);
}
.footer-socials a:hover {
    color: var(--accent);
    border-color: var(--accent);
    background: var(--accent-soft);
    opacity: 1;
}
footer .copyright {
    font-size: 0.72rem;
    color: var(--text-faint);
}

/* ═══════════════════════════════════════
   DECORATIVE ELEMENTS
   ═══════════════════════════════════════ */
.deco-line {
    width: 48px;
    height: 1.5px;
    background: var(--accent);
    margin: 2rem 0;
    border-radius: 1px;
}
.deco-dot-grid {
    position: absolute;
    width: 80px;
    height: 80px;
    background-image: radial-gradient(circle, var(--border) 1px, transparent 1px);
    background-size: 10px 10px;
    opacity: 0.5;
    pointer-events: none;
}

/* ═══════════════════════════════════════
   ANIMATIONS
   ═══════════════════════════════════════ */
.reveal {
    opacity: 0;
    transform: translateY(28px);
    transition: opacity 0.7s var(--ease-out), transform 0.7s var(--ease-out);
}
.reveal.vis {
    opacity: 1;
    transform: translateY(0);
}
.r-d1 { transition-delay: 0.08s; }
.r-d2 { transition-delay: 0.16s; }
.r-d3 { transition-delay: 0.24s; }
.r-d4 { transition-delay: 0.32s; }

/* hero stagger */
.stagger > * {
    opacity: 0;
    transform: translateY(18px);
    animation: fadeUp 0.75s var(--ease-out) forwards;
}
.stagger > *:nth-child(1) { animation-delay: 0.15s; }
.stagger > *:nth-child(2) { animation-delay: 0.3s; }
.stagger > *:nth-child(3) { animation-delay: 0.45s; }
.stagger > *:nth-child(4) { animation-delay: 0.6s; }

.portrait-wrap {
    opacity: 0;
    transform: translateY(18px);
    animation: fadeUp 0.75s var(--ease-out) 0.4s forwards;
}

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

/* ═══════════════════════════════════════
   RESPONSIVE
   ═══════════════════════════════════════ */
@media (max-width: 768px) {
    nav { padding: 0 1.25rem; }
    .nav-links { 
        display: none; 
        position: absolute;
        top: 60px;
        left: 0;
        width: 100%;
        background: rgba(245,240,232,0.97);
        backdrop-filter: blur(16px);
        padding: 1rem;
        flex-direction: column;
        border-bottom: 1px solid var(--border);
    }
    .nav-links.open { display: flex; }
    .nav-toggle { display: block; }

    .page, .page-wide { padding: 0 1.25rem; }
    .home-hero {
        grid-template-columns: 1fr;
        padding-top: 7rem;
        gap: 2rem;
    }
    .home-hero .portrait-wrap { max-width: 220px; order: -1; }
    .pub-card {
        grid-template-columns: 1fr;
    }
    .pub-card-img { max-height: 200px; }
    .exp-full-item, .exp-mini-item {
        grid-template-columns: 1fr;
        gap: 0.5rem;
    }
    .project-full-card,
    .project-full-card:nth-child(even) {
        grid-template-columns: 1fr;
        direction: ltr;
    }
}