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

:root {
    --navy:       #2b333f;
    --slate:      #455766;
    --blue-gray:  #718ba0;
    --rose:       #c2948a;
    --rose-dark:  #a87b72;
    --rose-light: #f0e6e3;
    --warm-white: #faf8f6;
    --bg-off:     #f5f3f1;
    --border:     #e5ddd9;
    --text:       #2b333f;
    --muted:      #718ba0;
    --white:      #ffffff;
}

html { scroll-behavior: smooth; }

body {
    font-family: 'Roboto', -apple-system, BlinkMacSystemFont, sans-serif;
    color: var(--text);
    background: var(--white);
    line-height: 1.65;
    overflow-x: hidden;
}

/* ══════════════ NAV ══════════════ */
#navbar {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 300;
    height: 60px;
    background: rgba(255,255,255,0.97);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
}

.nav-inner {
    max-width: 1120px;
    width: 100%;
    margin: 0 auto;
    padding: 0 2.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo {
    font-family: 'Montserrat', sans-serif;
    font-weight: 700;
    font-size: 0.9rem;
    color: var(--navy);
    text-decoration: none;
    letter-spacing: 0.01em;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 2rem;
}
.nav-links a {
    font-family: 'Montserrat', sans-serif;
    font-size: 0.72rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    text-decoration: none;
    color: var(--blue-gray);
    transition: color 0.2s;
}
.nav-links a:hover,
.nav-links a.active { color: var(--rose-dark); }

.nav-cv {
    padding: 0.3rem 0.9rem;
    border: 1.5px solid var(--rose);
    border-radius: 99px;
    color: var(--rose) !important;
    transition: background 0.2s, color 0.2s !important;
}
.nav-cv:hover {
    background: var(--rose) !important;
    color: var(--white) !important;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 6px;
}
.nav-toggle span {
    display: block;
    width: 20px; height: 2px;
    background: var(--navy);
    border-radius: 2px;
}

/* ══════════════ HERO ══════════════ */
#hero {
    background: var(--warm-white);
    padding-top: 60px;
    border-bottom: 1px solid var(--border);
}

.hero-inner {
    max-width: 1120px;
    margin: 0 auto;
    padding: 5rem 2.5rem 5rem;
}

.hero-eyebrow {
    font-family: 'Montserrat', sans-serif;
    font-size: 0.68rem;
    font-weight: 700;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: var(--rose-dark);
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}
.hero-eyebrow::before {
    content: '';
    display: block;
    width: 24px; height: 2px;
    background: var(--rose);
    border-radius: 2px;
    flex-shrink: 0;
}

.hero-text h1 {
    font-family: 'Playfair Display', Georgia, serif;
    font-size: 2rem;
    font-weight: 700;
    color: var(--navy);
    line-height: 1.15;
    letter-spacing: -0.01em;
    margin-bottom: 1rem;
}

.hero-tagline {
    font-size: 1rem;
    font-weight: 400;
    color: var(--slate);
    max-width: 600px;
    line-height: 1.75;
    margin-bottom: 2.25rem;
}

.hero-actions { display: flex; gap: 1rem; flex-wrap: wrap; align-items: center; }

.btn-primary {
    display: inline-flex;
    align-items: center;
    padding: 0.65rem 1.5rem;
    background: var(--navy);
    color: var(--white);
    text-decoration: none;
    border-radius: 4px;
    font-family: 'Montserrat', sans-serif;
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    transition: background 0.2s;
}
.btn-primary:hover { background: var(--slate); }

.btn-ghost {
    display: inline-flex;
    align-items: center;
    padding: 0.65rem 1.5rem;
    background: transparent;
    color: var(--navy);
    text-decoration: none;
    border-radius: 4px;
    font-family: 'Montserrat', sans-serif;
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    border: 1.5px solid var(--border);
    transition: border-color 0.2s, color 0.2s;
}
.btn-ghost:hover { border-color: var(--slate); color: var(--slate); }

/* Social – hero */
.hero-social {
    display: flex;
    gap: 0.75rem;
    margin-top: 1.5rem;
    align-items: center;
}
.hero-social a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px; height: 32px;
    border-radius: 50%;
    background: transparent;
    border: 1.5px solid var(--border);
    color: var(--blue-gray);
    transition: border-color 0.2s, color 0.2s, background 0.2s;
}
.hero-social a:hover {
    border-color: var(--rose);
    color: var(--rose);
}
.hero-social a svg { width: 13px; height: 13px; }

.hero-scroll-hint { display: none; }

/* ══════════════ SHARED ══════════════ */
.container {
    max-width: 1120px;
    margin: 0 auto;
    padding: 5.5rem 2.5rem;
}

.section-kicker {
    font-family: 'Montserrat', sans-serif;
    font-size: 0.65rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.18em;
    color: var(--rose-dark);
    margin-bottom: 0.6rem;
}
.section-kicker.light { color: var(--rose-dark); }

.section-heading {
    font-family: 'Playfair Display', serif;
    font-size: clamp(1.7rem, 3.5vw, 2.4rem);
    font-weight: 700;
    color: var(--navy);
    letter-spacing: -0.02em;
    margin-bottom: 3rem;
    line-height: 1.15;
}
.section-heading.light { color: var(--navy); }

/* ══════════════ ABOUT ══════════════ */
#about { background: var(--white); }

.about-layout {
    display: grid;
    grid-template-columns: 210px 1fr 210px;
    gap: 4rem;
    align-items: start;
}

/* Left: circular photo + social */
.about-photo-col {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 1.1rem;
    position: sticky;
    top: 80px;
}

.about-circle {
    width: 180px;
    height: 180px;
    border-radius: 50%;
    overflow: hidden;
    border: 3px solid var(--rose-light);
    box-shadow: 0 4px 20px rgba(0,0,0,0.08);
}
.about-circle img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center top;
}

.about-social {
    display: flex;
    gap: 0.5rem;
}
.about-social a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px; height: 32px;
    border-radius: 50%;
    background: transparent;
    border: 1.5px solid var(--border);
    color: var(--blue-gray);
    transition: border-color 0.2s, color 0.2s;
}
.about-social a:hover { border-color: var(--rose); color: var(--rose); }
.about-social a svg { width: 13px; height: 13px; }

/* Middle: bio text */
.about-body .section-kicker { margin-bottom: 1rem; }
.about-body p {
    font-size: 0.98rem;
    line-height: 1.85;
    color: var(--slate);
    margin-bottom: 1.3rem;
}
.about-body p:last-child { margin-bottom: 0; }
.about-body strong { color: var(--navy); font-weight: 500; }

/* Right: sidebar */
.about-sidebar {
    display: flex;
    flex-direction: column;
    gap: 1.6rem;
    position: sticky;
    top: 80px;
    padding-left: 1.5rem;
    border-left: 2px solid var(--rose-light);
}
.sidebar-label {
    font-family: 'Montserrat', sans-serif;
    font-size: 0.62rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.14em;
    color: var(--rose-dark);
    margin-bottom: 0.25rem;
}
.sidebar-value {
    font-size: 0.85rem;
    line-height: 1.55;
    color: var(--slate);
}
.sidebar-value a { color: var(--rose-dark); text-decoration: none; }
.sidebar-value a:hover { text-decoration: underline; }

/* ══════════════ RESEARCH ══════════════ */
#research { padding: 0; }

.research-bg {
    background: var(--bg-off);
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
}

.research-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
}

.research-card {
    background: var(--white);
    border: 1px solid var(--border);
    border-top: 3px solid var(--rose-light);
    border-radius: 4px;
    padding: 2rem;
    transition: border-top-color 0.2s;
}
.research-card:hover { border-top-color: var(--rose); }

.rc-num {
    font-family: 'Montserrat', sans-serif;
    font-size: 0.6rem;
    font-weight: 800;
    letter-spacing: 0.12em;
    color: var(--rose);
    text-transform: uppercase;
    margin-bottom: 0.75rem;
}

.research-card h3 {
    font-family: 'Montserrat', sans-serif;
    font-size: 0.88rem;
    font-weight: 700;
    color: var(--navy);
    margin-bottom: 0.6rem;
    letter-spacing: -0.01em;
}

.research-card p {
    font-size: 0.875rem;
    line-height: 1.75;
    color: var(--blue-gray);
}

/* ══════════════ PUBLICATIONS ══════════════ */
#publications { background: var(--white); }

.pub-note {
    font-size: 0.82rem;
    color: var(--muted);
    font-style: italic;
    margin-top: -1.5rem;
    margin-bottom: 3rem;
}

.pub-group { margin-bottom: 3.5rem; }
.pub-group:last-child { margin-bottom: 0; }

.pub-group-label {
    font-family: 'Montserrat', sans-serif;
    font-size: 0.62rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.16em;
    color: var(--blue-gray);
    padding-bottom: 0.75rem;
    border-bottom: 1px solid var(--border);
}

.pub-list { display: flex; flex-direction: column; }

.pub-item {
    display: grid;
    grid-template-columns: 110px 1fr;
    gap: 2rem;
    padding: 1.3rem 0;
    border-bottom: 1px solid var(--border);
}

.pub-meta { padding-top: 0.15rem; }

.pub-year {
    font-family: 'Montserrat', sans-serif;
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--blue-gray);
    letter-spacing: 0.04em;
}

.pub-body p {
    font-size: 0.88rem;
    line-height: 1.7;
    color: var(--slate);
    margin-bottom: 0.35rem;
}
.pub-body p strong { color: var(--navy); }

.pub-link {
    font-family: 'Montserrat', sans-serif;
    font-size: 0.7rem;
    color: var(--rose-dark);
    text-decoration: none;
    font-weight: 600;
    letter-spacing: 0.02em;
    opacity: 0.8;
    transition: opacity 0.15s;
}
.pub-link:hover { opacity: 1; text-decoration: underline; }

/* Badges */
.badge {
    font-family: 'Montserrat', sans-serif;
    display: inline-block;
    font-size: 0.58rem;
    font-weight: 700;
    letter-spacing: 0.07em;
    text-transform: uppercase;
    padding: 0.2rem 0.55rem;
    border-radius: 2px;
}
.badge-blue  { background: #dce8f5; color: #2d6296; }
.badge-amber { background: #fdf0dc; color: #8a5c1a; }
.badge-slate { background: #edf0f3; color: #5a6a7a; }

/* ══════════════ CONTACT ══════════════ */
#contact { padding: 0; }

.contact-bg {
    background: var(--navy);
    border-top: 4px solid var(--rose);
}

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

.contact-heading {
    font-family: 'Playfair Display', serif;
    font-size: clamp(1.8rem, 4vw, 2.6rem);
    font-weight: 700;
    color: var(--white);
    letter-spacing: -0.02em;
    margin-bottom: 0.75rem;
}

.contact-sub {
    font-size: 0.95rem;
    font-weight: 300;
    color: rgba(255,255,255,0.5);
    margin-bottom: 2.25rem;
    max-width: 420px;
    margin-left: auto;
    margin-right: auto;
    line-height: 1.7;
}

.btn-contact {
    display: inline-block;
    padding: 0.75rem 2.25rem;
    background: var(--rose);
    color: var(--white);
    text-decoration: none;
    border-radius: 4px;
    font-family: 'Montserrat', sans-serif;
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    transition: background 0.2s;
    margin-bottom: 1.75rem;
    display: block;
    width: fit-content;
    margin-left: auto;
    margin-right: auto;
}
.btn-contact:hover { background: var(--rose-dark); }

.contact-social {
    display: flex;
    gap: 0.75rem;
    justify-content: center;
    margin-bottom: 3rem;
}
.contact-social a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px; height: 36px;
    border-radius: 50%;
    background: transparent;
    border: 1.5px solid rgba(255,255,255,0.2);
    color: rgba(255,255,255,0.5);
    transition: border-color 0.2s, color 0.2s;
}
.contact-social a:hover { border-color: var(--rose); color: var(--rose); }
.contact-social a svg { width: 15px; height: 15px; }

.contact-grid {
    display: flex;
    gap: 5rem;
    justify-content: center;
    flex-wrap: wrap;
    padding-top: 2.5rem;
    border-top: 1px solid rgba(255,255,255,0.1);
}
.contact-card { text-align: left; }
.cc-label {
    font-family: 'Montserrat', sans-serif;
    font-size: 0.6rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.14em;
    color: var(--rose);
    margin-bottom: 0.35rem;
    opacity: 0.85;
}
.cc-value {
    font-size: 0.88rem;
    color: rgba(255,255,255,0.55);
    line-height: 1.6;
}

/* ══════════════ FOOTER ══════════════ */
footer {
    background: #141c24;
    color: rgba(255,255,255,0.2);
    font-family: 'Montserrat', sans-serif;
    font-size: 0.72rem;
    letter-spacing: 0.05em;
    text-align: center;
    padding: 1.2rem 2rem;
}

/* ══════════════ RESPONSIVE ══════════════ */
@media (max-width: 1000px) {
    .about-layout { grid-template-columns: 180px 1fr; gap: 3rem; }
    .about-sidebar {
        grid-column: 2;
        position: static;
        flex-direction: row;
        flex-wrap: wrap;
        gap: 1.5rem 3rem;
        border-left: none;
        border-top: 2px solid var(--rose-light);
        padding-left: 0;
        padding-top: 1.5rem;
    }
}

@media (max-width: 700px) {
    .nav-links {
        display: none;
        position: fixed;
        top: 60px; left: 0; right: 0;
        background: rgba(255,255,255,0.98);
        flex-direction: column;
        padding: 2rem 2.5rem;
        gap: 1.5rem;
        border-bottom: 1px solid var(--border);
    }
    .nav-links.open { display: flex; }
    .nav-toggle { display: flex; }

    .about-layout { grid-template-columns: 1fr; gap: 2rem; }
    .about-photo-col { flex-direction: row; align-items: center; position: static; }
    .about-circle { width: 100px; height: 100px; }
    .about-sidebar { grid-column: 1; position: static; flex-direction: column; }

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

    .pub-item { grid-template-columns: 1fr; gap: 0.4rem; }

    .contact-grid { gap: 2rem; flex-direction: column; align-items: center; }
    .contact-card { text-align: center; }

    .container { padding: 4rem 1.5rem; }
    .hero-inner { padding: 4rem 1.5rem; }
}