/* Personal website styles. The accent colour is injected inline from
   content/profile.yaml (site.accent); everything else lives here. */

:root {
    --bg: #ffffff;
    --surface: #f7f8fa;
    --border: #e5e7eb;
    --text: #1f2430;
    --muted: #5b6473;
    --link: var(--accent);
    --radius: 12px;
    --maxw: 820px;
    --font:
        -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial,
        'Apple Color Emoji', 'Segoe UI Emoji', sans-serif;
}

:root[data-theme='dark'] {
    --bg: #0e1117;
    --surface: #161b22;
    --border: #2a313c;
    --text: #e6e9ef;
    --muted: #9aa4b2;
}

@media (prefers-color-scheme: dark) {
    :root:not([data-theme='light']) {
        --bg: #0e1117;
        --surface: #161b22;
        --border: #2a313c;
        --text: #e6e9ef;
        --muted: #9aa4b2;
    }
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: 72px;
}

body {
    margin: 0;
    font-family: var(--font);
    font-size: 17px;
    line-height: 1.65;
    color: var(--text);
    background: var(--bg);
    -webkit-font-smoothing: antialiased;
}

a {
    color: var(--link);
    text-decoration: none;
}
a:hover {
    text-decoration: underline;
}

/* Navigation */
.nav {
    position: sticky;
    top: 0;
    z-index: 10;
    background: color-mix(in srgb, var(--bg) 88%, transparent);
    backdrop-filter: saturate(180%) blur(10px);
    border-bottom: 1px solid var(--border);
}
.nav-inner {
    max-width: var(--maxw);
    margin: 0 auto;
    padding: 0.6rem 1.25rem;
    display: flex;
    align-items: center;
    gap: 1rem;
}
.nav-brand {
    font-weight: 700;
    color: var(--text);
}
.nav-links {
    display: flex;
    gap: 1.1rem;
    margin-left: auto;
    flex-wrap: wrap;
}
.nav-links a {
    color: var(--muted);
    font-size: 0.95rem;
}
.nav-links a:hover {
    color: var(--text);
    text-decoration: none;
}
.nav-links a.active {
    color: var(--text);
    font-weight: 600;
}
.theme-toggle {
    background: none;
    border: 1px solid var(--border);
    color: var(--text);
    border-radius: 8px;
    width: 34px;
    height: 34px;
    cursor: pointer;
    font-size: 1rem;
}
.theme-toggle:hover {
    background: var(--surface);
}

/* Layout */
main {
    max-width: var(--maxw);
    margin: 0 auto;
    padding: 0 1.25rem;
    min-height: 60vh;
}
.section {
    padding: 2.4rem 0;
    border-top: 1px solid var(--border);
}
main > .section:first-child {
    border-top: none;
}
.section-title {
    font-size: 1.4rem;
    margin: 0 0 1.2rem;
    letter-spacing: -0.01em;
}
.muted {
    color: var(--muted);
    font-size: 0.92rem;
}
.more {
    margin: 1.1rem 0 0;
}
.more a {
    font-weight: 600;
    font-size: 0.92rem;
}

/* Page header (non-home pages) */
.page-header {
    padding: 2.6rem 0 0.6rem;
}
.page-title {
    font-size: 1.9rem;
    margin: 0;
    letter-spacing: -0.02em;
}
.page-header + .section {
    border-top: none;
    padding-top: 1.2rem;
}

/* Hero */
.hero {
    display: grid;
    grid-template-columns: 160px 1fr;
    gap: 2rem;
    padding: 3rem 0 2.4rem;
    align-items: start;
}
.avatar {
    width: 160px;
    height: 160px;
    border-radius: 50%;
    object-fit: cover;
    border: 1px solid var(--border);
    background: var(--surface);
}
.name {
    font-size: 2rem;
    margin: 0 0 0.2rem;
    letter-spacing: -0.02em;
}
.role {
    font-size: 1.15rem;
    margin: 0.1rem 0;
    font-weight: 600;
}
.affiliation,
.location {
    margin: 0.1rem 0;
    color: var(--muted);
}
.bio {
    margin: 1rem 0;
}
.bio p {
    margin: 0 0 0.7rem;
}

/* Tags */
.tags {
    list-style: none;
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    padding: 0;
    margin: 1rem 0;
}
.tag {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 999px;
    padding: 0.2rem 0.7rem;
    font-size: 0.85rem;
    color: var(--muted);
}
.tags.small .tag {
    font-size: 0.78rem;
    padding: 0.1rem 0.55rem;
}

/* Social links */
.social {
    display: flex;
    flex-wrap: wrap;
    gap: 0.6rem;
    margin-top: 1.1rem;
}
.social-link {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    border: 1px solid var(--border);
    border-radius: 999px;
    padding: 0.35rem 0.8rem;
    color: var(--text);
    font-size: 0.9rem;
}
.social-link:hover {
    background: var(--surface);
    text-decoration: none;
    border-color: var(--accent);
}
.social-link .icon {
    color: var(--muted);
}
.icon {
    display: inline-block;
    vertical-align: middle;
}

/* News */
.news-list {
    list-style: none;
    padding: 0;
    margin: 0;
}
.news-item {
    display: grid;
    grid-template-columns: 110px 1fr;
    gap: 1rem;
    padding: 0.45rem 0;
}
.news-date {
    color: var(--muted);
    font-variant-numeric: tabular-nums;
    font-size: 0.92rem;
}

/* Publications */
.year-heading {
    font-size: 1.05rem;
    color: var(--muted);
    margin: 1.4rem 0 0.6rem;
}
.pub-list {
    list-style: none;
    padding: 0;
    margin: 0;
}
.pub {
    padding: 0.7rem 0 0.7rem 0;
    border-bottom: 1px dashed var(--border);
    position: relative;
}
.pub:last-child {
    border-bottom: none;
}
.pub-highlight {
    padding-left: 1.4rem;
}
.pub .star {
    position: absolute;
    left: 0;
    top: 0.8rem;
    color: var(--accent);
}
.pub-title {
    margin: 0;
    font-weight: 600;
}
.pub-authors {
    margin: 0.15rem 0;
    color: var(--text);
    font-size: 0.95rem;
}
.pub-venue {
    margin: 0.15rem 0;
    color: var(--muted);
    font-size: 0.92rem;
    font-style: italic;
}
.pub-type {
    font-style: normal;
    text-transform: uppercase;
    font-size: 0.7rem;
    letter-spacing: 0.04em;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 0.05rem 0.4rem;
}
.pub-abstract {
    margin: 0.4rem 0;
    font-size: 0.92rem;
    color: var(--muted);
}
.pub-links {
    margin: 0.35rem 0 0;
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}
.pub-links a {
    font-size: 0.82rem;
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 0.1rem 0.5rem;
    color: var(--muted);
}
.pub-links a:hover {
    color: var(--accent);
    border-color: var(--accent);
    text-decoration: none;
}

/* Timeline (experience, education) */
.timeline {
    list-style: none;
    padding: 0;
    margin: 0;
}
.timeline-item {
    display: grid;
    grid-template-columns: 150px 1fr;
    gap: 1rem;
    padding: 0.7rem 0;
}
.timeline-period {
    color: var(--muted);
    font-size: 0.9rem;
    font-variant-numeric: tabular-nums;
}
.timeline-role {
    margin: 0;
    font-weight: 600;
}
.timeline-org {
    margin: 0.1rem 0;
    color: var(--muted);
}
.timeline-summary {
    margin: 0.3rem 0;
}
.bullets {
    margin: 0.4rem 0 0;
    padding-left: 1.1rem;
}
.bullets li {
    margin: 0.2rem 0;
}

/* Cards (projects) */
.cards {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    gap: 1rem;
}
.card {
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.1rem;
    background: var(--surface);
}
.card-title {
    margin: 0 0 0.4rem;
    font-size: 1.05rem;
}
.card-summary {
    margin: 0 0 0.6rem;
    font-size: 0.93rem;
}
.card-links {
    display: flex;
    flex-wrap: wrap;
    gap: 0.6rem;
    margin: 0.6rem 0 0;
}
.card-links a {
    font-size: 0.85rem;
}

/* Plain lists (teaching, awards, talks) */
.plain-list {
    list-style: none;
    padding: 0;
    margin: 0;
}
.plain-item {
    padding: 0.55rem 0;
    border-bottom: 1px dashed var(--border);
}
.plain-item:last-child {
    border-bottom: none;
}
.plain-main {
    display: block;
    font-weight: 600;
}
.plain-meta {
    display: block;
    color: var(--muted);
    font-size: 0.9rem;
}
.plain-note {
    display: block;
    color: var(--muted);
    font-size: 0.9rem;
    margin-top: 0.15rem;
}

/* Footer */
.footer {
    max-width: var(--maxw);
    margin: 0 auto;
    padding: 2rem 1.25rem 3rem;
    border-top: 1px solid var(--border);
    color: var(--muted);
    font-size: 0.88rem;
}

/* Responsive */
@media (max-width: 640px) {
    body {
        font-size: 16px;
    }
    .hero {
        grid-template-columns: 1fr;
        gap: 1.2rem;
        text-align: left;
    }
    .avatar {
        width: 120px;
        height: 120px;
    }
    .news-item,
    .timeline-item {
        grid-template-columns: 1fr;
        gap: 0.2rem;
    }
    .nav-links {
        display: none;
    }
}