@import url("https://fonts.googleapis.com/css2?family=Archivo:wght@400;500;600;700;800&display=swap");

:root {
    --bg: #e6eaf1;
    --surface: #ffffff;
    --surface-2: #f2f4f8;
    --surface-muted: #e5e7eb;
    --footer-bg: #f0f2f6;
    --text: #0b0f1a;
    --muted: #334155;
    --ink: #111827;
    --ink-soft: #1f2937;
    --ink-strong: #0b0d12;
    --line: #d0d6e0;
    --line-soft: #e6e9ef;
    --max-width: 128rem;
    --pad: 2.6rem;
    --cell: 2.8rem;

    --dic-blue: #009cef;
    --dic-red: #dc002d;
    --dic-yellow: #fbb03b;
    --accent-strength: 0.6;
}

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

html {
    font-size: 62.5%;
}

body {
    margin: 0;
    min-height: 100vh;
    font-family: "Archivo", "Inter", "Segoe UI", Arial, sans-serif;
    background-color: var(--bg);
    background-image: repeating-linear-gradient(
        45deg,
        rgba(15, 23, 42, 0.04) 0,
        rgba(15, 23, 42, 0.04) 2px,
        transparent 2px,
        transparent 22px
    );
    color: var(--text);
    font-size: 1.8rem;
    line-height: 1.45;
    letter-spacing: 0.005em;
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
}

a {
    color: color-mix(in srgb, var(--dic-blue) 60%, var(--ink));
    text-decoration: none;
}

a:hover,
a:focus-visible {
    color: var(--dic-blue);
    text-decoration: underline;
    text-underline-offset: 0.2em;
}

.site-grid {
    width: min(100%, var(--max-width));
    margin: 0 auto;
    border-left: 1px solid var(--line);
    border-right: 1px solid var(--line);
    background: var(--surface);
    position: relative;
    overflow: hidden;
}

/* subtle master grid over the whole canvas */
.site-grid::before {
    content: "";
    position: absolute;
    inset: 0;
    pointer-events: none;
    background-image: repeating-linear-gradient(
        to right,
        transparent 0,
        transparent calc(var(--cell) - 1px),
        rgba(0, 0, 0, 0.05) calc(var(--cell) - 1px),
        rgba(0, 0, 0, 0.05) var(--cell)
    );
    opacity: 0.16;
}

.topbar {
    position: relative;
    z-index: 2;
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    min-height: 7.2rem;
    border-bottom: 1px solid var(--line);
    background: var(--surface-2);
}

.topbar__brand {
    display: grid;
    grid-template-columns: 20rem auto;
    align-items: center;
    min-height: 100%;
    padding: 0 var(--pad);
}

.topbar__logo {
    height: 7.2rem;
    width: auto;
    padding: 0.4rem;
    padding-right: var(--pad);
    object-fit: contain;
    border-right: 1px solid var(--line);
    background: var(--surface-2);
    filter: none;
}

.wordmark {
    display: inline-flex;
    align-items: center;
    padding: 0 var(--pad);
    font-size: clamp(2.1rem, 2vw, 4rem);
    line-height: 1;
    font-weight: 700;
    letter-spacing: 0.07em;
    text-transform: uppercase;
}

.topbar__nav {
    display: grid;
    grid-template-columns: repeat(2, minmax(14rem, 1fr));
}

.topbar__nav a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 1.45rem;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    padding: 0 var(--pad);
    border-left: 1px solid var(--line);
    color: var(--ink-soft);
    transition:
        background-color 120ms ease,
        color 120ms ease;
}

.topbar__nav a:hover,
.topbar__nav a:focus-visible {
    color: var(--ink-strong);
    background: color-mix(in srgb, var(--dic-blue) 20%, #f2f4f8);
    box-shadow: inset 0 -2px 0 var(--dic-blue);
    text-decoration: none;
}

.layout {
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: repeat(12, minmax(0, 1fr));
    border-bottom: 1px solid var(--line);
}

.panel {
    position: relative;
    border-right: 1px solid var(--line);
    border-bottom: 1px solid var(--line);
    padding: var(--pad);
    background: var(--surface-2);
}

.panel :is(h1, h2, h3, p) {
    margin-top: 0;
}

.panel h2 {
    font-size: clamp(2.6rem, 2.3vw, 4.2rem);
    line-height: 1.02;
    font-weight: 700;
    letter-spacing: 0.01em;
    margin-bottom: 1.4rem;
    position: relative;
}

.panel h3 {
    font-size: clamp(2.2rem, 2vw, 3rem);
    line-height: 1.12;
    font-weight: 700;
    margin-bottom: 0.8rem;
}

.panel p {
    color: var(--muted);
}

.panel--logo {
    grid-column: 1 / -1;
    min-height: 18rem;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(
        120deg,
        color-mix(in srgb, var(--dic-blue) 10%, #ffffff),
        color-mix(in srgb, var(--dic-yellow) 10%, #ffffff) 60%,
        color-mix(in srgb, var(--dic-red) 10%, #ffffff)
    );
}

.panel__logo-image {
    width: min(52rem, 76%);
    height: auto;
    display: block;
    margin: 0 auto;
}

.panel--hero {
    grid-column: 1 / span 8;
    min-height: 45rem;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    gap: 2.2rem;
    padding-bottom: 3.8rem;
    overflow: hidden;
    background:
        linear-gradient(rgba(0, 0, 0, 0.05) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 0, 0, 0.05) 1px, transparent 1px),
        var(--surface-2);
    background-size:
        var(--cell) var(--cell),
        var(--cell) var(--cell),
        100% 100%,
        100% 100%;
}

/* removed spheroid motif from hero */

.panel__eyebrow {
    position: relative;
    z-index: 2;
    color: var(--ink-soft);
    font-size: 1.3rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.panel__title {
    position: relative;
    z-index: 2;
    margin: 0;
    font-weight: 800;
    font-size: clamp(4.4rem, 6.2vw, 8.6rem);
    line-height: 1;
    letter-spacing: -0.015em;
    max-width: 14ch;
}

.panel__lead {
    position: relative;
    z-index: 2;
    margin: 0;
    font-size: clamp(1.7rem, 1.8vw, 2.4rem);
    color: var(--ink-soft);
}

.panel--announcement {
    grid-column: 9 / -1;
    min-height: 45rem;
    display: flex;
    align-items: flex-end;
    justify-content: flex-end;
    flex-direction: column;
}

.panel--announcement p {
    margin: 0;
    font-size: clamp(2.8rem, 3.3vw, 5rem);
    line-height: 1.02;
    font-weight: 600;
    color: var(--ink);
    max-width: 18ch;
    letter-spacing: -0.01em;
}

.panel--preregistration {
    grid-column: 1 / -1;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 2rem;
    background: var(--ink);
    padding-top: 1.3rem;
    padding-bottom: 1.3rem;
}

.panel--preregistration p {
    margin: 0;
    font-size: clamp(1.4rem, 1.4vw, 1.8rem);
    font-weight: 700;
    color: #ffffff;
    letter-spacing: -0.01em;
}

.button.button--preregistration {
    flex-shrink: 0;
    border-color: #ffffff;
    color: #ffffff;
}

.button.button--preregistration:hover,
.button.button--preregistration:focus-visible {
    background: rgba(255, 255, 255, 0.15);
    border-color: #ffffff;
    color: #ffffff;
}

.panel--about {
    grid-column: 1 / span 6;
    min-height: 35rem;
}

.panel--about p {
    max-width: 65ch;
}

.panel--cfp {
    grid-column: 1 / -1;
}

.panel--cfp p {
    max-width: 70ch;
}

.panel--tracks {
    grid-column: 7 / -1;
    min-height: 35rem;
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    padding: 0;
}

.panel--location {
    grid-column: 1 / -1;
    padding: 0;
}

:is(.panel--tracks, .panel--location) > h2 {
    grid-column: 1 / -1;
    margin: 0;
    padding: var(--pad);
    border-bottom: 1px solid var(--line);
}

.cfp-timeline {
    list-style: none;
    padding: 0;
    margin: 2.6rem 0 0;
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    align-items: start;
    position: relative;
    gap: 0;
}

.cfp-timeline::before {
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    top: 0.4rem;
    height: 4px;
    background: var(--line);
}

.cfp-timeline li {
    position: relative;
    padding-top: 2.4rem;
    text-align: center;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-size: 1.35rem;
    font-weight: 700;
    color: var(--ink);
}

.cfp-timeline li::before {
    content: "";
    position: absolute;
    top: 0;
    left: 50%;
    width: 1.2rem;
    height: 1.2rem;
    background: var(--ink);
    transform: translateX(-50%);
}

.button,
.button.button-outline {
    display: block;
    border: 1px solid color-mix(in srgb, var(--dic-red) 55%, #aeb3bc);
    border-radius: 0;
    background: transparent;
    color: var(--ink);
    text-transform: uppercase;
    letter-spacing: 0.12em;
    font-weight: 700;
    font-size: 1.2rem;
    padding: 1rem 1.4rem;
    transition:
        background-color 120ms ease,
        color 120ms ease,
        border-color 120ms ease;
}

.button:hover,
.button:focus-visible,
.button.button-outline:hover,
.button.button-outline:focus-visible {
    background: color-mix(in srgb, var(--dic-red) 75%, #ffffff);
    border-color: var(--dic-red);
    color: #ffffff;
    text-decoration: none;
}

.track-card {
    --track-accent: var(--dic-blue);
    min-height: 23rem;
    padding: var(--pad);
    border-right: 1px solid var(--line);
    box-shadow: inset 0 3px 0
        color-mix(
            in srgb,
            var(--track-accent) calc(var(--accent-strength) * 100%),
            transparent
        );
    display: flex;
    flex-direction: column;
    gap: 0.8rem;
}

.track-card:last-child {
    border-right: none;
}

.track-card p {
    margin: 0;
    font-size: 1.55rem;
}

.track-card__meta {
    margin-top: auto !important;
    padding-top: 1rem;
    color: color-mix(in srgb, var(--track-accent) 70%, var(--ink)) !important;
    text-transform: uppercase;
    font-size: 1rem !important;
    letter-spacing: 0.08em;
    font-weight: 700;
}

.track-card--practice {
    --track-accent: var(--dic-red);
}

.track-card--research {
    --track-accent: var(--dic-yellow);
}

.track-card--education {
    --track-accent: var(--dic-blue);
}

/* "What to expect" full-width section */
.panel--expect {
    grid-column: 1 / -1;
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    padding: 0;
}

.panel--expect > h2 {
    grid-column: 1 / -1;
    margin: 0;
    padding: var(--pad);
    border-bottom: 1px solid var(--line);
}

.expect-col {
    --track-accent: var(--dic-blue);
    padding: var(--pad);
    border-right: 1px solid var(--line);
    display: flex;
    flex-direction: column;
    gap: 0.8rem;
    box-shadow: inset 0 3px 0
        color-mix(
            in srgb,
            var(--track-accent) calc(var(--accent-strength) * 100%),
            transparent
        );
}

.expect-col:last-child {
    border-right: none;
}

.expect-col h3 {
    margin: 0;
}

.expect-col p {
    margin: 0;
    font-size: 1.55rem;
}

.expect-col--practice {
    --track-accent: var(--dic-red);
}

.expect-col--research {
    --track-accent: var(--dic-yellow);
}

.expect-col--education {
    --track-accent: var(--dic-blue);
}

.track-topics {
    list-style: none;
    padding: 0;
    margin: 0;
    display: grid;
    gap: 0.45rem;
}

.track-topics li {
    position: relative;
    padding-left: 1.6rem;
    font-size: 1.4rem;
    color: var(--muted);
    line-height: 1.45;
}

.track-topics li::before {
    content: "";
    position: absolute;
    left: 0;
    top: 0.55em;
    width: 0.5rem;
    height: 0.5rem;
    background: var(--ink);
    opacity: 0.22;
}

.location-grid {
    display: grid;
    grid-template-columns: 5fr 7fr;
    min-height: 42rem;
}

.location-grid__text {
    padding: var(--pad);
    border-right: 1px solid var(--line);
    display: flex;
    flex-direction: column;
    gap: 1.2rem;
}

.location-grid__text p {
    margin: 0;
    max-width: 66ch;
}

.location-grid__text a {
    margin-top: auto;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    font-size: 1.2rem;
    font-weight: 700;
    color: color-mix(in srgb, var(--dic-blue) 70%, var(--ink));
}

.location-grid__map {
    min-height: 100%;
    background: var(--surface-muted);
}

#map {
    width: 100%;
    height: 100%;
    min-height: 42rem;
}

.location-grid__map iframe {
    width: 100%;
    height: 100%;
    border: 0;
}

.footer {
    position: relative;
    z-index: 2;
    border-top: 1px solid var(--line);
    background: var(--footer-bg);
    color: var(--muted);
    padding: 2.2rem var(--pad) 2.8rem;
    font-size: 1.45rem;
}

.footer::before {
    content: "";
    position: absolute;
    left: 0;
    top: -1px;
    width: 100%;
    height: 3px;
    background: linear-gradient(
        90deg,
        var(--dic-blue) 0 33.333%,
        var(--dic-red) 33.333% 66.666%,
        var(--dic-yellow) 66.666% 100%
    );
    opacity: 0.95;
}

.footer__title {
    margin: 0 0 0.7rem;
    color: var(--ink);
    text-transform: uppercase;
    letter-spacing: 0.11em;
    font-size: 1.25rem;
    font-weight: 800;
}

.footer p {
    margin: 0;
    max-width: 90ch;
}

/* remove legacy sections if old HTML fragments remain */
hr,
.navigation,
.hero,
.event_description,
.tracks,
.location {
    display: none !important;
}

@media (max-width: 1100px) {
    .topbar {
        grid-template-columns: 1fr;
    }

    .topbar__brand {
        border-bottom: 1px solid var(--line);
    }

    .topbar__nav {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .topbar__nav a:first-child {
        border-left: 0;
    }

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

    .panel,
    .panel--hero,
    .panel--announcement,
    .panel--preregistration,
    .panel--about,
    .panel--cfp,
    .panel--tracks,
    .panel--expect,
    .panel--location {
        grid-column: auto;
        min-height: auto;
        border-right: none;
    }

    .panel--hero {
        min-height: 40rem;
    }

    .panel--announcement {
        min-height: 22rem;
    }

    .panel--tracks {
        grid-template-columns: 1fr;
    }

    .panel--expect {
        grid-template-columns: 1fr;
    }

    .expect-col {
        border-right: 0;
        border-bottom: 1px solid var(--line);
    }

    .expect-col:last-child {
        border-bottom: 0;
    }

    .track-card {
        border-right: 0;
        border-bottom: 1px solid var(--line);
    }

    .track-card:last-child {
        border-bottom: 0;
    }

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

    .location-grid__text {
        border-right: 0;
        border-bottom: 1px solid var(--line);
    }

    .location-grid__map {
        min-height: 30rem;
    }
}

@media (max-width: 680px) {
    .site-grid {
        border-left: 0;
        border-right: 0;
    }

    .wordmark {
        font-size: clamp(1.7rem, 6vw, 2.4rem);
    }

    .topbar__brand {
        grid-template-columns: 14rem auto;
    }

    .topbar__nav a {
        min-height: 5.2rem;
        font-size: 1.2rem;
    }

    .panel {
        padding: 1.8rem;
    }

    .panel__title {
        font-size: clamp(3.3rem, 10vw, 5.4rem);
    }

    .panel--announcement p {
        font-size: clamp(2.1rem, 8vw, 3.6rem);
    }

    .panel--preregistration {
        flex-direction: column;
        align-items: flex-start;
    }

    .panel--preregistration p {
        font-size: clamp(1.4rem, 4vw, 1.8rem);
    }

    .button.button--preregistration {
        width: 100%;
    }

    .location-grid__map {
        min-height: 26rem;
    }
}