:root {
    --accent: #005eff;
    --accent-soft: rgba(0, 94, 255, 0.08);
    --border-strong: #111827;
    --border-soft: #d4d4d8;
    --text-main: #111827;
    --text-muted: #6b7280;
    --bg-body: #eef2ff;
    --bg-card: #fdfdfd;
}

/* ---------- Global ---------- */

html {
    scroll-behavior: smooth;
}

body {
    -webkit-font-smoothing: antialiased;
    color: var(--text-main);
    font-family:
        "Share Tech Mono",
        system-ui,
        -apple-system,
        BlinkMacSystemFont,
        "SF Pro Text",
        "Helvetica Neue",
        Arial,
        sans-serif;
    font-size: 1rem; /* base reading size */
    line-height: 1.55;
}

/* subtle grid background */
.bg-body-custom {
    background-color: var(--bg-body);
    background-image:
        linear-gradient(90deg, rgba(15, 23, 42, 0.04) 1px, transparent 1px),
        linear-gradient(180deg, rgba(15, 23, 42, 0.03) 1px, transparent 1px);
    background-size: 12px 12px;
}

.container-xxl {
    max-width: 1320px;
}

/* Links: classic blue */
a {
    color: #0645ad;
    text-decoration: none;
}
a:hover {
    text-decoration: underline;
}

/* ---------- Cards / "windows" ---------- */

.sidebar-card {
    border-radius: 6px;
    border: 2px solid var(--border-strong);
    background: var(--bg-card);
    box-shadow:
        0 0 0 1px #ffffff,
        4px 4px 0 rgba(15, 23, 42, 0.55);
}

.shadow-soft {
    box-shadow:
        0 0 0 1px #ffffff,
        4px 4px 0 rgba(15, 23, 42, 0.55);
}

.card-section {
    border-radius: 6px;
    border: 2px solid var(--border-strong);
    background: var(--bg-card);
    box-shadow:
        0 0 0 1px #ffffff,
        3px 3px 0 rgba(15, 23, 42, 0.45);
    transition:
        transform 0.08s ease-out,
        box-shadow 0.08s ease-out,
        border-color 0.08s ease-out;
}

@media (min-width: 992px) {
    .card-section:hover {
        transform: translateY(-1px);
        box-shadow:
            0 0 0 1px #ffffff,
            5px 5px 0 rgba(15, 23, 42, 0.6);
        border-color: #020617;
    }
}

/* ---------- Sidebar profile ---------- */

.sidebar-card .card-body {
    text-align: center;
}

.profile-header {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.profile-photo-wrapper {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 6px;
    border-radius: 4px;
    background: #e5e7eb;
    border: 2px solid var(--border-strong);
    box-shadow:
        0 0 0 1px #ffffff,
        3px 3px 0 rgba(15, 23, 42, 0.6);
}

.profile-photo,
.profile-avatar-fallback {
    width: 210px;
    height: 210px;
}

@media (max-width: 576px) {
    .profile-photo,
    .profile-avatar-fallback {
        width: 170px;
        height: 170px;
    }
}

.profile-photo {
    border-radius: 4px;
    object-fit: cover;
    border: 1px solid #9ca3af;
    background: #e5e7eb;
}

.profile-avatar-fallback {
    border-radius: 4px;
    border: 1px solid #d1d5db;
    background: radial-gradient(circle at 30% 20%, #93c5fd, #2563eb);
    display: none;
    align-items: center;
    justify-content: center;
    font-size: 2.1rem;
    font-weight: 700;
    color: #fff;
    image-rendering: pixelated;
}

/* Sidebar text hierarchy */

.profile-name {
    margin-bottom: 0.25rem;
    font-size: 1.35rem;
    font-weight: 700;
}

.profile-title {
    font-size: 0.9rem;
    color: var(--text-muted);
    margin-bottom: 0.4rem;
}

.profile-affiliation {
    font-size: 0.95rem;
    font-weight: 600;
    margin-bottom: 0.1rem;
}

.profile-location {
    font-size: 0.9rem;
    color: var(--text-muted);
}

.profile-text {
    font-size: 0.9rem;
}

/* ---------- Section labels ---------- */

.section-label {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.18em;
    color: var(--text-muted);
    margin-bottom: 0.25rem;
    font-family: "Press Start 2P", system-ui, monospace;
    text-align: left;
}

/* ---------- Link chips & research interests ---------- */

.profile-chip {
    font-size: 0.7rem;
    padding: 0.18rem 0.6rem;
    border-radius: 3px;
    border: 1px solid var(--border-strong);
    background: #f5f5f5;
    color: var(--text-main);
    white-space: nowrap;
    font-family: "Press Start 2P", system-ui, monospace;
    text-transform: uppercase;
}

.profile-chip:hover {
    background: #e5e7eb;
    text-decoration: none;
}

.research-topics {
    display: flex;
    flex-wrap: wrap;
    gap: 0.25rem 0.4rem;
    justify-content: flex-start;
}

.research-topics span {
    display: inline-flex;
    align-items: center;
    white-space: normal;
    max-width: 100%;
    word-break: break-word;
    font-size: 0.7rem;
    padding: 0.15rem 0.4rem;
    border-radius: 3px;
    border: 1px solid var(--border-strong);
    background: #fefce8;
    color: #4b5563;
    font-family: "Press Start 2P", system-ui, monospace;
}

/* ---------- Internship note ---------- */

.internship-note {
    font-size: 0.9rem;
    padding: 0.6rem 0.7rem;
    border-radius: 4px;
    background: var(--accent-soft);
    border: 2px dashed var(--accent);
    color: #111827;
    text-align: left;
}

/* ---------- Section headings & body ---------- */

.section-title {
    font-size: 0.85rem;
    line-height: 1.4;
    font-weight: 400;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    font-family: "Press Start 2P", system-ui, monospace;
    color: var(--text-main);
    margin-bottom: 0.4rem;
}

.section-subtitle {
    font-size: 0.92rem;
    color: var(--text-muted);
    margin-bottom: 0.75rem;
    font-style: italic;
}

.section-body p {
    font-size: 0.98rem;
    margin-bottom: 0.6rem;
}

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

/* shared list styling for JS lists (news, teaching, awards, service) */
.section-list {
    margin: 0;
    padding-left: 1rem;
    font-size: 0.92rem;
}

/* ---------- News / teaching labels ---------- */

.news-date,
.teaching-term {
    font-weight: 600;
    margin-right: 0.35rem;
    white-space: nowrap;
    font-family: "Press Start 2P", system-ui, monospace;
    font-size: 0.65rem;
}

/* ---------- Publications ---------- */

.pub-list-cards {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.pub-card {
    border-radius: 4px;
    border: 2px solid var(--border-strong);
    background: #f8fafc;
    padding: 0.65rem 0.75rem;
    transition:
        box-shadow 0.08s ease-out,
        transform 0.08s ease-out,
        border-color 0.08s ease-out,
        background-color 0.08s ease-out;
}

.pub-card-clickable {
    cursor: pointer;
}

.pub-card-clickable:hover {
    background: #ffffff;
    border-color: #020617;
    box-shadow:
        0 0 0 1px #ffffff,
        3px 3px 0 rgba(15, 23, 42, 0.55);
    transform: translateY(-1px);
}

.pub-card-title {
    font-weight: 700;
    margin-bottom: 0.2rem;
    font-size: 0.98rem;
}

.pub-card-meta {
    font-size: 0.9rem;
    color: var(--text-muted);
}

.pub-card-chips {
    display: flex;
    flex-wrap: wrap;
    gap: 0.25rem;
    margin-top: 0.35rem;
}

.pub-chip {
    font-size: 0.68rem;
    padding: 0.15rem 0.6rem;
    border-radius: 3px;
    border: 1px solid var(--border-strong);
    background: #e0f2fe;
    color: var(--text-main);
    text-decoration: none;
    white-space: nowrap;
    font-family: "Press Start 2P", system-ui, monospace;
    text-transform: uppercase;
}

.pub-chip:hover {
    background: #bfdbfe;
    text-decoration: none;
}

/* layout for optional publication thumbnail */
.pub-card-image-block {
    margin-top: 0.5rem;
    margin-bottom: 0.4rem;
    text-align: center; /* center images that don't use full width */
}

.pub-card-image {
    display: inline-block;
    max-width: 100%; /* never overflow horizontally */
    height: auto; /* scale height proportionally */
    border-radius: 4px;
    border: 1px solid var(--border-strong);
    background: #e5e7eb;
}

/* ---------- Sections nav ---------- */

.sections-nav {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: thin;
}

.sections-nav::-webkit-scrollbar {
    height: 4px;
}

.sections-nav::-webkit-scrollbar-thumb {
    background: #9ca3af;
    border-radius: 999px;
}

.sections-card {
    border-radius: 999px;
    border: 2px solid var(--border-strong);
    background: linear-gradient(180deg, #e2e8f0 0%, #cbd5e1 70%, #9ca3af 100%);
    box-shadow:
        0 0 0 1px #ffffff,
        3px 3px 0 rgba(15, 23, 42, 0.5);
}

.sections-label {
    font-size: 0.7rem;
    font-family: "Press Start 2P", system-ui, monospace;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: #4b5563;
}

.nav-link-compact {
    padding: 0.2rem 0.6rem;
    font-size: 0.7rem;
    white-space: nowrap;
    border-radius: 999px;
    color: #1f2937;
    font-family: "Press Start 2P", system-ui, monospace;
    text-transform: uppercase;
    border: 1px solid transparent;
}

.nav-link-compact:hover {
    color: #020617;
    background-color: rgba(255, 255, 255, 0.8);
    border-color: var(--border-strong);
}

.nav-link-compact.active {
    background-color: #ffffff;
    border-color: var(--border-strong);
    box-shadow:
        0 0 0 1px #e5e7eb,
        2px 2px 0 rgba(15, 23, 42, 0.4);
}

/* ---------- Footer ---------- */

.footer-text {
    background: transparent;
    font-size: 0.78rem;
    color: var(--text-muted);
}

/* ---------- Small screen tweaks ---------- */

@media (max-width: 576px) {
    .sidebar-card {
        box-shadow:
            0 0 0 1px #ffffff,
            4px 4px 0 rgba(15, 23, 42, 0.6);
    }
}