:root {
    color-scheme: dark;
    --ink: #f7fafc;
    --muted: #cbd5e1;
    --quiet: #94a3b8;
    --line: rgba(148, 163, 184, 0.22);
    --panel: rgba(22, 32, 47, 0.86);
    --panel-soft: rgba(45, 55, 72, 0.58);
    --green: #68d391;
    --green-soft: #d1fae5;
    --blue: #93c5fd;
    --violet: #c4b5fd;
}

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

html {
    scroll-behavior: smooth;
}

body {
    min-height: 100vh;
    overflow-x: hidden;
    background:
        radial-gradient(circle at 16% 12%, rgba(104, 211, 145, 0.1), transparent 26rem),
        radial-gradient(circle at 86% 52%, rgba(196, 181, 253, 0.09), transparent 30rem),
        #2d3748;
    color: var(--ink);
    font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    line-height: 1.65;
}

#particles-bg {
    position: fixed;
    inset: 0;
    z-index: 0;
    pointer-events: none;
}

.panel-nav,
main,
.panel-footer {
    position: relative;
    z-index: 2;
}

a:focus-visible,
summary:focus-visible {
    outline: 3px solid var(--green);
    outline-offset: 4px;
}

.panel-nav {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    width: min(calc(100% - 2rem), 96rem);
    margin: 0 auto;
    padding: 1.25rem 0;
    border-bottom: 1px solid var(--line);
}

.panel-nav a {
    color: var(--muted);
    font-size: 0.82rem;
    font-weight: 750;
    letter-spacing: 0.08em;
    text-decoration: none;
    text-transform: uppercase;
    transition: color 180ms ease;
}

.panel-nav a:hover {
    color: var(--green);
}

main {
    width: min(calc(100% - 2rem), 96rem);
    margin: 0 auto;
}

.dual-panel-layout {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: clamp(2.5rem, 4vw, 4rem);
    align-items: start;
}

.conference-column {
    min-width: 0;
}

.research-panel-column {
    padding-left: 3rem;
}

.roundtable-column {
    margin-top: 0;
    padding-left: clamp(2.5rem, 4vw, 4rem);
    border-left: 1px solid var(--line);
}

.roundtable-column .panel-kicker,
.roundtable-column .panel-event-label,
.roundtable-column .section-label,
.roundtable-column .roundtable-role {
    color: var(--violet);
}

.research-panel-column .panel-hero,
.roundtable-hero {
    display: grid;
    grid-template-columns: 1fr;
    grid-template-rows: auto 1fr auto auto;
    gap: 0;
    min-height: 48rem;
    padding: clamp(4.5rem, 10vw, 8rem) 0 4.5rem;
}

.panel-hero-copy,
.roundtable-hero-copy {
    grid-row: 1;
}

.research-panel-column .panel-chairs,
.roundtable-chairs {
    grid-row: 3;
    min-height: 9rem;
}

.research-panel-column .panel-hero h1 {
    font-size: clamp(1.75rem, 2.15vw, 2.15rem);
}

.research-panel-column .panel-event-card {
    grid-row: 4;
    width: min(100%, 25rem);
    margin-top: 2.25rem;
    margin-left: auto;
}

.roundtable-event-card {
    grid-row: 4;
    width: min(100%, 25rem);
    margin-top: 2.25rem;
    margin-right: auto;
    border-top-color: var(--violet);
}

.panel-hero {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(18.5rem, 0.44fr);
    gap: 1.5rem;
    align-items: end;
    padding: clamp(4.5rem, 10vw, 8rem) 0 4.5rem;
}

.panel-kicker,
.section-label,
.paper-lens,
.panel-event-label {
    color: var(--green);
    font-size: 0.72rem;
    font-weight: 800;
    letter-spacing: 0.15em;
    text-transform: uppercase;
}

.panel-hero h1 {
    max-width: none;
    margin-top: 0.8rem;
    font-family: Georgia, "Times New Roman", serif;
    font-size: clamp(2rem, 3.7vw, 2.35rem);
    font-weight: 500;
    letter-spacing: -0.035em;
    line-height: 1.05;
    white-space: nowrap;
}

.panel-subtitle {
    max-width: 34rem;
    margin-top: 1.5rem;
    color: var(--ink);
    font-family: Georgia, "Times New Roman", serif;
    font-size: clamp(1.35rem, 3vw, 2rem);
    font-style: italic;
    line-height: 1.25;
}

.panel-intro {
    max-width: 39rem;
    margin-top: 1.5rem;
    color: var(--muted);
    font-size: 1.02rem;
}

.panel-event-card {
    border-top: 3px solid var(--green);
    border-bottom: 1px solid var(--line);
    background: rgba(17, 24, 39, 0.42);
    box-shadow: 0 24px 60px rgba(0, 0, 0, 0.16);
}

.panel-event-card.roundtable-event-card {
    border-top-color: var(--violet);
}

.panel-event-primary,
.panel-event-detail {
    padding: 1.35rem 1.4rem;
}

.panel-event-primary {
    border-bottom: 1px solid var(--line);
}

.panel-event-time {
    margin-top: 0.25rem;
    font-family: Georgia, "Times New Roman", serif;
    font-size: clamp(2rem, 4vw, 2.75rem);
    line-height: 1.1;
    white-space: nowrap;
}

.panel-event-detail {
    color: var(--muted);
    font-size: 0.95rem;
}

.panel-event-detail strong {
    color: var(--ink);
}

.panel-chairs {
    padding: 2rem 0;
    border-top: 1px solid var(--line);
    border-bottom: 1px solid var(--line);
    color: var(--quiet);
}

.research-panel-column .perspective-grid {
    width: 100%;
    margin-left: 0;
}

.roundtable-chairs {
    border-bottom-color: rgba(196, 181, 253, 0.58);
}

.chair-names {
    margin-top: 0.45rem;
    color: var(--ink);
    font-family: Georgia, "Times New Roman", serif;
    font-size: clamp(1rem, 2vw, 1.25rem);
    line-height: 1.4;
}

.chair-names-secondary {
    margin-top: 0.2rem;
}

.chair-note {
    color: var(--quiet);
    font-weight: 600;
    letter-spacing: 0.04em;
    text-transform: none;
}

.panel-overview,
.papers-section {
    padding: clamp(4.5rem, 9vw, 7rem) 0;
}

.panel-overview {
    padding-top: 2.5rem;
}

.section-heading h2 {
    margin-top: 0.45rem;
    font-family: Georgia, "Times New Roman", serif;
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 500;
    letter-spacing: -0.035em;
    line-height: 1.06;
}

.perspective-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    margin-top: 0;
    border-top: 1px solid var(--line);
    border-bottom: 1px solid var(--line);
}

.perspective-grid div {
    display: flex;
    flex-direction: column;
    gap: 0.2rem;
    padding: 1.2rem 1rem;
    border-right: 1px solid var(--line);
}

.perspective-grid div:first-child {
    padding-left: 0;
}

.perspective-grid div:last-child {
    border-right: 0;
}

.perspective-grid span {
    color: var(--quiet);
    font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
    font-size: 0.73rem;
}

.perspective-grid strong {
    font-size: 0.95rem;
}

.research-perspective-band {
    height: 6.25rem;
}

details summary {
    cursor: pointer;
    list-style: none;
}

details summary::-webkit-details-marker {
    display: none;
}

.panel-abstract {
    margin-top: 2rem;
    padding: 0 1.3rem 1.35rem;
    border: 1px solid var(--line);
    background: rgba(17, 24, 39, 0.35);
}

.paper-abstract summary {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    color: var(--green-soft);
    font-size: 0.88rem;
    font-weight: 800;
    letter-spacing: 0.06em;
    text-transform: uppercase;
}

.abstract-toggle {
    position: relative;
    flex: 0 0 auto;
    width: 1rem;
    height: 1rem;
}

.abstract-toggle::before,
.abstract-toggle::after {
    content: "";
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0.8rem;
    height: 1px;
    background: currentColor;
    transform: translate(-50%, -50%);
    transition: transform 180ms ease;
}

.abstract-toggle::after {
    transform: translate(-50%, -50%) rotate(90deg);
}

details[open] > summary .abstract-toggle::after {
    transform: translate(-50%, -50%) rotate(0deg);
}

.abstract-copy {
    color: var(--muted);
    font-size: 0.96rem;
    line-height: 1.78;
}

.abstract-copy p {
    margin-top: 1rem;
}

.talk-label {
    color: var(--ink);
    font-weight: 800;
}

.papers-section {
    padding: clamp(4.5rem, 7vw, 6rem) 0;
    border-top: 1px solid var(--line);
}

.papers-heading {
    display: grid;
    grid-template-columns: 1fr 1fr;
    align-items: end;
}

.papers-heading h2 {
    grid-column: 1;
    grid-row: 2;
    font-size: clamp(1.45rem, 3vw, 2rem);
}

.papers-heading .section-label {
    grid-column: 1;
    grid-row: 1;
}

.papers-heading > p:last-child {
    grid-column: 2;
    grid-row: 1 / span 2;
    justify-self: end;
    color: var(--quiet);
    font-size: 0.95rem;
}

.paper-list {
    display: grid;
    gap: 1rem;
    margin-top: 2.5rem;
}

.paper-card {
    display: grid;
    grid-template-columns: 4.5rem minmax(0, 1fr);
    border: 1px solid var(--line);
    background: var(--panel);
    box-shadow: 0 18px 45px rgba(0, 0, 0, 0.12);
}

.paper-number {
    padding: 1.55rem 1rem;
    border-right: 1px solid var(--line);
    color: var(--green);
    font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
    font-size: 0.82rem;
}

.paper-content {
    min-width: 0;
    padding: 1.55rem clamp(1.25rem, 4vw, 2.25rem);
}

.paper-content h3 {
    max-width: 45rem;
    margin-top: 0.45rem;
    color: var(--ink);
    font-family: Georgia, "Times New Roman", serif;
    font-size: clamp(1.12rem, 2.25vw, 1.45rem);
    font-weight: 500;
    line-height: 1.35;
}

.paper-authors {
    margin-top: 1.15rem;
    color: var(--quiet);
    font-size: 0.9rem;
    line-height: 1.7;
}

.paper-authors strong {
    color: var(--muted);
    font-weight: 700;
}

.paper-author {
    display: block;
}

.paper-author + .paper-author {
    margin-top: 0.22rem;
}

.paper-abstract {
    margin-top: 1.25rem;
    border-top: 1px solid var(--line);
}

.paper-abstract summary {
    padding: 1rem 0 0;
}

.paper-abstract[open] summary {
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--line);
}

.paper-abstract .abstract-copy {
    padding-bottom: 0.3rem;
}

.panel-footer {
    display: flex;
    justify-content: space-between;
    width: min(calc(100% - 2rem), 96rem);
    margin: 0 auto;
    padding: 1.8rem 0 2.5rem;
    border-top: 1px solid var(--line);
    color: var(--quiet);
    font-size: 0.78rem;
    letter-spacing: 0.04em;
}

.roundtable-hero {
    padding-bottom: 4.5rem;
}

.roundtable-hero h2 {
    max-width: none;
    margin-top: 0.8rem;
    font-family: Georgia, "Times New Roman", serif;
    font-size: clamp(1.75rem, 2.15vw, 2.15rem);
    font-weight: 500;
    letter-spacing: -0.035em;
    line-height: 1.05;
    white-space: nowrap;
}

.roundtable-subtitle {
    max-width: 34rem;
    margin-top: 1.5rem;
    color: var(--ink);
    font-family: Georgia, "Times New Roman", serif;
    font-size: clamp(0.97rem, 2.16vw, 1.44rem);
    font-style: italic;
    line-height: 1.25;
}

.roundtable-invitation {
    max-width: 39rem;
    margin-top: 1.5rem;
    color: var(--muted);
    font-size: 1.02rem;
}

.roundtable-agenda {
    margin-top: 6.25rem;
    padding: clamp(4.5rem, 7vw, 6rem) 0;
}

.roundtable-section-heading h3 {
    margin-top: 0.45rem;
    font-family: Georgia, "Times New Roman", serif;
    font-size: clamp(1.55rem, 2.6vw, 2.2rem);
    font-weight: 500;
    line-height: 1.15;
}

.roundtable-steps {
    margin-top: 2rem;
    border-top: 1px solid var(--line);
    list-style: none;
}

.roundtable-steps li {
    display: grid;
    grid-template-columns: 3rem minmax(0, 1fr);
    gap: 1rem;
    padding: 1.45rem 0;
    border-bottom: 1px solid var(--line);
}

.roundtable-step-number {
    color: var(--violet);
    font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
    font-size: 0.76rem;
}

.roundtable-steps h4 {
    color: var(--ink);
    font-family: Georgia, "Times New Roman", serif;
    font-size: 1.13rem;
    font-weight: 600;
    line-height: 1.35;
}

.roundtable-steps li p:not(.roundtable-role) {
    margin-top: 0.7rem;
    color: var(--muted);
    font-size: 0.91rem;
    line-height: 1.7;
}

.roundtable-role {
    margin-top: 0.75rem;
    color: var(--green);
    font-size: 0.7rem;
    font-weight: 800;
    letter-spacing: 0.12em;
    text-transform: uppercase;
}

.working-group-signup {
    margin-bottom: clamp(4.5rem, 7vw, 6rem);
    padding: clamp(1.75rem, 4vw, 2.5rem);
    border-top: 3px solid var(--violet);
    border-bottom: 1px solid var(--line);
    background: rgba(196, 181, 253, 0.07);
    box-shadow: 0 24px 60px rgba(0, 0, 0, 0.14);
}

.working-group-signup h3 {
    max-width: 34rem;
    margin-top: 0.55rem;
    color: var(--ink);
    font-family: Georgia, "Times New Roman", serif;
    font-size: clamp(1.45rem, 2.4vw, 2rem);
    font-weight: 500;
    line-height: 1.2;
}

.working-group-signup h3 span {
    display: block;
}

.working-group-signup h3 span + span {
    margin-top: 0.18em;
}

.working-group-form {
    margin-top: 1.75rem;
}

.working-group-form label {
    display: block;
    margin-bottom: 0.55rem;
    color: var(--muted);
    font-size: 0.78rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.working-group-form-row {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 0.75rem;
}

.working-group-form input {
    min-width: 0;
    padding: 0.85rem 1rem;
    border: 1px solid rgba(196, 181, 253, 0.48);
    border-radius: 0;
    outline: none;
    background: rgba(17, 24, 39, 0.54);
    color: var(--ink);
    font: inherit;
}

.working-group-form input::placeholder {
    color: var(--quiet);
}

.working-group-form input:focus {
    border-color: var(--violet);
    box-shadow: 0 0 0 3px rgba(196, 181, 253, 0.16);
}

.working-group-form button {
    padding: 0.85rem 1.2rem;
    border: 1px solid var(--violet);
    background: var(--violet);
    color: #24283a;
    font-size: 0.82rem;
    font-weight: 800;
    letter-spacing: 0.04em;
    cursor: pointer;
}

.working-group-form button:hover,
.working-group-form button:focus-visible {
    background: #ddd6fe;
    border-color: #ddd6fe;
}

.working-group-form button:disabled {
    cursor: wait;
    opacity: 0.72;
}

.working-group-note {
    margin-top: 0.7rem;
    color: var(--quiet);
    font-size: 0.78rem;
    line-height: 1.5;
}

.working-group-status {
    min-height: 1.5em;
    margin-top: 0.55rem;
    color: var(--violet);
    font-size: 0.82rem;
    font-weight: 700;
}

.working-group-response-frame {
    display: none;
}

.panel-tulip {
    position: fixed;
    z-index: 1;
    width: clamp(5rem, 8vw, 8rem);
    aspect-ratio: 1 / 2;
    pointer-events: none;
    background: url("./assets/floating-tulip.svg") center / contain no-repeat;
    filter: drop-shadow(0 18px 22px rgba(0, 0, 0, 0.2));
    opacity: 0.72;
}

.panel-tulip-upper {
    top: 4.8rem;
    left: max(0.35rem, calc((100vw - 73rem) / 2 - 5rem));
    transform: rotate(-8deg);
}

.panel-tulip-lower {
    right: max(0.35rem, calc((100vw - 73rem) / 2 - 5rem));
    bottom: 1rem;
    transform: scaleX(-1) rotate(8deg);
}

@media (max-width: 78rem) {
    .panel-tulip {
        width: 5rem;
        opacity: 0.28;
    }
}

@media (max-width: 80rem) {
    .dual-panel-layout {
        grid-template-columns: 1fr;
        max-width: 68rem;
    }

    .roundtable-column {
        margin-top: 0;
        padding-left: 0;
        border-top: 1px solid var(--line);
        border-left: 0;
    }

    .research-panel-column {
        padding-left: 0;
    }

    .research-panel-column .perspective-grid {
        width: 100%;
        height: auto;
        margin-left: 0;
    }

    .roundtable-agenda {
        margin-top: 0;
    }

    .research-panel-column .panel-hero h1,
    .roundtable-hero h2 {
        font-size: clamp(2rem, 3.7vw, 2.35rem);
    }

    .research-panel-column .panel-hero,
    .roundtable-hero {
        display: flex;
        flex-direction: column;
        min-height: 0;
    }

    .research-panel-column .panel-chairs,
    .roundtable-chairs {
        min-height: 0;
    }

    .research-panel-column .panel-event-card,
    .roundtable-event-card {
        margin: 2.25rem auto 0;
    }
}

@media (max-width: 760px) {
    .panel-hero {
        grid-template-columns: 1fr;
        gap: 2.5rem;
        padding: 4.25rem 0 3.5rem;
    }

    .panel-hero h1,
    .roundtable-hero h2 {
        font-size: clamp(3rem, 15vw, 5rem);
        white-space: normal;
    }

    .panel-event-card {
        max-width: 28rem;
    }

    .working-group-form-row {
        grid-template-columns: 1fr;
    }

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

    .perspective-grid div,
    .perspective-grid div:first-child {
        padding: 0.85rem 0;
        border-right: 0;
        border-bottom: 1px solid var(--line);
    }

    .perspective-grid div:last-child {
        border-bottom: 0;
    }

    .papers-heading {
        display: block;
    }

    .papers-heading > p:last-child {
        margin-top: 0.75rem;
    }

    .paper-card {
        grid-template-columns: 1fr;
    }

    .paper-number {
        padding: 0.85rem 1.25rem;
        border-right: 0;
        border-bottom: 1px solid var(--line);
    }

    .panel-tulip {
        position: absolute;
        width: 4.5rem;
        opacity: 0.22;
    }

    .panel-tulip-upper {
        top: 5.5rem;
        left: -0.75rem;
    }

    .panel-tulip-lower {
        top: auto;
        right: -0.75rem;
        bottom: 3rem;
    }

    .panel-footer {
        flex-direction: column;
        gap: 0.4rem;
    }
}

@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }
}