/* TIME 2027 - Option 2 "Portal"
 * Conference-portal layout in the style of ICLR / NeurIPS sites:
 * navy title bar, one row of tabs, and a right-hand sidebar that shows
 * Important Dates and Quick Links on every page.
 * Colours are defined once below; change them here to re-theme the whole site.
 */

:root {
    --ocean-950: #051F38;
    --ocean-900: #072A4A;  /* title bar */
    --ocean-800: #0A3A63;  /* headings */
    --ocean-700: #0D4C80;
    --ocean-600: #0F5E9C;  /* primary ocean blue: tabs, links, buttons */
    --ocean-500: #1A75BB;
    --ocean-300: #9CCBEE;
    --ocean-100: #E1EFFA;
    --ocean-50:  #F4F9FD;
    --sand-100:  #FBF2E1;
    --amber:     #D9862A;
    --ink:       #15222F;
    --muted:     #4C5A68;
    --line:      #D9E6F1;
    --wrap:      1240px;
}

* { box-sizing: border-box; }

body {
    margin: 0;
    background: #fff;
    color: var(--ink);
    font-family: 'Inter', 'Segoe UI', system-ui, sans-serif;
    font-size: 17px;
    line-height: 1.65;
}

img { max-width: 100%; }

a {
    color: var(--ocean-600);
    text-decoration: underline;
    text-decoration-thickness: 1px;
    text-underline-offset: 3px;
}
a:hover { color: var(--ocean-800); text-decoration-thickness: 2px; }

/* Ocean touch: links in text keep a plain underline, which turns into a gently
   moving wave on hover / keyboard focus. Tabs, buttons and the sidebar link
   boxes keep their own styles. */
.content a:not(.button),
.side-card p a,
.side-past a {
    text-decoration: none;
    background: linear-gradient(currentColor, currentColor) 0 100% / 100% 1px no-repeat;
    padding-bottom: 3px;
}
.content a:not(.button):hover,
.content a:not(.button):focus-visible,
.side-card p a:hover,
.side-card p a:focus-visible,
.side-past a:hover,
.side-past a:focus-visible {
    background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='4' viewBox='0 0 14 4'%3E%3Cpath d='M0 2 Q3.5 0 7 2 T14 2' fill='none' stroke='%230F5E9C' stroke-width='1.3'/%3E%3C/svg%3E") 0 100% / 14px 4px repeat-x;
    animation: link-wave 1.2s linear infinite;
}
@keyframes link-wave { to { background-position: 14px 100%; } }
@media (prefers-reduced-motion: reduce) {
    .content a:hover, .content a:focus-visible,
    .side-card p a:hover, .side-card p a:focus-visible,
    .side-past a:hover, .side-past a:focus-visible { animation: none; }
}

h1, h2, h3 { line-height: 1.25; letter-spacing: -0.01em; }

.content h2 {
    margin: 48px 0 16px;
    padding-bottom: 10px;
    border-bottom: 2px solid var(--ocean-100);
    color: var(--ocean-800);
    font-size: 28px;
    font-weight: 700;
}
.content > h2:first-child { margin-top: 0; }
.content h3 { margin: 0 0 4px; color: var(--ocean-800); font-size: 20px; font-weight: 700; }

p { margin: 0 0 16px; }

pre {
    margin: 0 0 16px;
    padding: 10px 14px;
    overflow-x: auto;
    background: var(--ocean-50);
    border: 1px solid var(--line);
    border-radius: 8px;
}
pre code { padding: 0; background: none; font-size: 0.9em; }

code {
    font-family: ui-monospace, 'SFMono-Regular', Menlo, monospace;
    font-size: 0.86em;
    background: var(--ocean-100);
    padding: 1px 6px;
    border-radius: 4px;
}

/* ------------------------------------------------------------------ title bar */
.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 24px; }

.topbar { background: var(--ocean-900); color: #fff; }
.topbar-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    padding-top: 18px;
    padding-bottom: 18px;
}
.brand {
    display: flex;
    align-items: center;
    gap: 16px;
    color: #fff;
    text-decoration: none;
}
.brand:hover { color: #fff; }
.brand img {
    flex: none;
    width: 60px;
    height: 60px;
    padding: 5px;
    background: #fff;
    border-radius: 14px;
}
.brand-name { display: block; font-size: 32px; font-weight: 800; line-height: 1.1; }
.brand-sub { display: block; max-width: 720px; color: var(--ocean-100); font-size: 15px; line-height: 1.4; }
.venue { text-align: right; font-size: 16px; line-height: 1.45; }
.venue strong { display: block; font-size: 18px; }
.venue span { color: var(--ocean-300); }

/* ------------------------------------------------------------------ tabs: one row, all visible, no drop-downs */
.tabs { background: var(--ocean-600); }
.tabs ul { display: flex; flex-wrap: wrap; gap: 4px; margin: 0 auto; padding-top: 8px; list-style: none; }
.tabs a {
    display: block;
    padding: 11px 22px 13px;
    border-radius: 8px 8px 0 0;
    color: #fff;
    font-size: 17px;
    font-weight: 600;
    text-decoration: none;
}
.tabs a:hover { background: rgba(255, 255, 255, .16); color: #fff; }
.tabs a[aria-current="page"] { position: relative; background: #fff; color: var(--ocean-700); }
/* Ocean touch: a short, static wave under the current tab's label */
.tabs a[aria-current="page"]::after {
    content: "";
    position: absolute;
    left: 50%;
    bottom: 5px;
    width: 42px;
    height: 4px;
    transform: translateX(-50%);
    background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='4' viewBox='0 0 14 4'%3E%3Cpath d='M0 2 Q3.5 0 7 2 T14 2' fill='none' stroke='%230F5E9C' stroke-width='1.4'/%3E%3C/svg%3E") 0 0 / 14px 4px repeat-x;
}

/* ------------------------------------------------------------------ page layout */
.layout {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 320px;
    gap: 48px;
    padding-top: 36px;
    padding-bottom: 72px;
}

/* sidebar */
.side-card {
    margin-bottom: 20px;
    padding: 18px 20px;
    background: var(--ocean-50);
    border: 1px solid var(--line);
    border-radius: 12px;
}
.side-card h2 {
    margin: 0 0 10px;
    color: var(--ocean-700);
    font-size: 14px;
    font-weight: 800;
    letter-spacing: .09em;
    text-transform: uppercase;
}
.side-card p { margin: 0 0 6px; font-size: 16px; }
.side-card ul { margin: 0; padding: 0; list-style: none; }
.side-dates li { padding: 10px 0; border-top: 1px solid var(--line); }
.side-dates li:first-child { border-top: 0; padding-top: 0; }
.side-dates .label { display: block; color: var(--muted); font-size: 15px; line-height: 1.4; }
.side-dates .date { display: block; font-weight: 700; line-height: 1.4; }
.side-dates del { display: block; color: var(--muted); font-weight: 400; font-size: 14px; text-decoration-color: #C2410C; }
.side-dates li.key .date { color: var(--ocean-600); }
.side-links li { margin-bottom: 8px; }
.side-links a {
    display: block;
    padding: 10px 14px;
    background: #fff;
    border: 1px solid var(--line);
    border-radius: 8px;
    font-weight: 600;
    text-decoration: none;
}
.side-links a:hover { border-color: var(--ocean-600); background: var(--ocean-100); }
.side-links a.primary { background: var(--ocean-600); border-color: var(--ocean-600); color: #fff; }
.side-links a.primary:hover { background: var(--ocean-800); }
.side-links .is-disabled {
    display: block;
    padding: 10px 14px;
    background: #F1F4F7;
    border: 1px dashed #C9D4DE;
    border-radius: 8px;
    color: #5A6672;
    font-weight: 600;
    cursor: not-allowed;
}
.side-past li { padding: 6px 0; font-size: 16px; }

/* ------------------------------------------------------------------ home */
.home-hero {
    position: relative;
    margin: 0 0 32px;
    overflow: hidden;
    border-radius: 14px;
    background: var(--ocean-900);
}
/* cover-banner.jpg is a pre-zoomed crop of cover.jpg framing the bridge and the two walkers */
.home-hero img { display: block; width: 100%; height: 260px; object-fit: cover; object-position: center 50%; }
.home-hero::after {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(to top right, rgba(5, 31, 56, .88) 0%, rgba(5, 31, 56, .45) 35%, rgba(5, 31, 56, 0) 60%);
}
.home-hero figcaption {
    position: absolute;
    z-index: 1;
    left: 0;
    bottom: 0;
    padding: 22px 28px;
    color: #fff;
}
.home-hero .kicker { display: block; color: var(--ocean-300); font-size: 14px; font-weight: 700; letter-spacing: .1em; text-transform: uppercase; }
.home-hero strong { display: block; font-size: 30px; line-height: 1.2; }
.home-hero .when { display: block; font-size: 17px; }

.lead { font-size: 18px; }

.content h3.sub { margin: 28px 0 10px; font-size: 21px; }
.objectives { margin: 0 0 8px; padding-left: 24px; }
.objectives li { margin-bottom: 4px; padding-left: 4px; }

.latest { margin: 8px 0 0; padding: 0; list-style: none; border-top: 1px solid var(--line); }
/* date sits in a left gutter so the title stays an inline link (underline matches the text) */
.latest li { position: relative; padding: 12px 0 12px 166px; border-bottom: 1px solid var(--line); }
.latest .d { position: absolute; top: 12px; left: 0; color: var(--muted); font-size: 15px; font-weight: 600; }
.more { margin-top: 12px; font-weight: 600; }

.button-row { display: flex; flex-wrap: wrap; gap: 10px; margin: 20px 0 8px; }
.button {
    display: inline-block;
    padding: 11px 18px;
    border: 2px solid var(--ocean-600);
    border-radius: 8px;
    background: var(--ocean-600);
    color: #fff;
    font-weight: 600;
    text-decoration: none;
}
.button:hover { background: var(--ocean-800); border-color: var(--ocean-800); color: #fff; }
.button.secondary { background: #fff; color: var(--ocean-600); }
.button.secondary:hover { background: var(--ocean-100); }
/* not available yet (e.g. submission portal before it opens) */
.button.is-disabled,
.button.is-disabled:hover { background: #F1F4F7; border-color: #C9D4DE; border-style: dashed; color: #5A6672; cursor: not-allowed; }
.tbd {
    display: inline-block;
    margin-left: 6px;
    padding: 0 7px;
    background: #fff;
    border: 1px solid #C9D4DE;
    border-radius: 999px;
    color: #5A6672;
    font-size: 12px;
    font-weight: 800;
    letter-spacing: .06em;
    line-height: 1.6;
    vertical-align: 1px;
}

.callout {
    margin: 20px 0;
    padding: 16px 20px;
    background: var(--sand-100);
    border-left: 4px solid var(--amber);
    border-radius: 0 10px 10px 0;
}
.callout p:last-child { margin-bottom: 0; }

.panel-box { margin: 20px 0; padding: 18px 20px; background: var(--ocean-50); border: 1px solid var(--line); border-radius: 12px; }
.panel-box p:last-child { margin-bottom: 0; }

.info-list {
    margin: 16px 0 24px;
    padding: 14px 20px;
    background: var(--ocean-50);
    border: 1px solid var(--line);
    border-radius: 10px;
    list-style: none;
}
.info-list li { margin: 4px 0; }

/* speakers: compact rows */
.speaker {
    display: grid;
    grid-template-columns: 120px 1fr;
    gap: 22px;
    padding: 22px 0;
    border-bottom: 1px solid var(--line);
}
.speaker:first-of-type { padding-top: 4px; }
.speaker img { width: 120px; height: 120px; object-fit: cover; border-radius: 50%; }
.speaker h3 a { color: var(--ocean-800); text-decoration: none; }
.speaker h3 a:hover { color: var(--ocean-600); }
.affil { margin: 0 0 4px; color: var(--muted); font-weight: 600; }
.metrics { margin: 0 0 8px; color: var(--ocean-700); font-size: 15px; font-weight: 600; }
.bio { margin: 0; }

/* important dates (calls page) */
.dates { margin: 16px 0 10px; padding: 0; list-style: none; border: 1px solid var(--line); border-radius: 10px; overflow: hidden; }
.dates li {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: 4px 24px;
    padding: 12px 18px;
    border-bottom: 1px solid var(--line);
}
.dates li:nth-child(even) { background: var(--ocean-50); }
.dates li:last-child { border-bottom: 0; }
.dates .label { font-weight: 600; }
.dates .date { color: var(--ocean-700); font-weight: 700; }
.dates del { margin-right: 8px; color: var(--muted); font-weight: 400; text-decoration-color: #C2410C; }
.note { color: var(--muted); font-size: 15px; }

/* tables */
.table-wrap { overflow-x: auto; }
table { width: 100%; margin: 16px 0 24px; border-collapse: collapse; border: 1px solid var(--line); }
th, td { padding: 12px 14px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; }
thead th { background: var(--ocean-50); color: var(--ocean-800); font-size: 14px; font-weight: 800; letter-spacing: .06em; text-transform: uppercase; border-bottom: 2px solid var(--ocean-600); }
.topic-table td:first-child { width: 32%; font-weight: 700; color: var(--ocean-800); }
.topic-table ul { margin: 0; padding-left: 18px; }
.topic-table li { margin: 2px 0; }

.schedule td.time { width: 104px; white-space: nowrap; font-weight: 700; font-variant-numeric: tabular-nums; color: var(--ocean-800); }
.schedule td.chair { width: 180px; color: var(--muted); font-size: 15px; }
.schedule tr.row-break td { background: #F6F8FA; color: var(--muted); }
.schedule tr.row-keynote td, .schedule tr.row-panel td { background: #FFFCF6; }
.session-title { display: block; font-weight: 700; }
.session-desc { margin: 4px 0 0; color: var(--muted); }
.tag {
    display: inline-block;
    margin-bottom: 4px;
    padding: 0 8px;
    border-radius: 4px;
    background: var(--ocean-100);
    color: var(--ocean-800);
    font-size: 12px;
    font-weight: 800;
    letter-spacing: .06em;
    text-transform: uppercase;
}
.tag-keynote, .tag-panel { background: var(--sand-100); color: #8A4F0F; }
.tag-break { background: #E9EDF1; color: var(--muted); }
.papers { margin: 8px 0 0; padding-left: 18px; }
.papers li { margin-bottom: 8px; }
.paper-title { display: block; font-style: italic; }
.paper-authors { display: block; color: var(--muted); font-size: 15px; }
.paper-links a { margin-right: 10px; font-size: 15px; }
.talk { margin-top: 8px; padding: 12px 14px; background: var(--sand-100); border-radius: 8px; }
.talk .paper-title { font-weight: 600; }
.talk p { margin: 6px 0 0; color: var(--muted); font-size: 15px; }
.talk ul { margin: 6px 0 0; padding-left: 18px; color: var(--muted); font-size: 15px; }
.talk img { display: block; width: 100%; max-width: 480px; margin: 12px auto 0; border-radius: 8px; }

.awards { margin: 16px 0; padding: 0; list-style: none; border: 1px solid var(--line); border-radius: 10px; overflow: hidden; }
.awards li { padding: 12px 18px; border-bottom: 1px solid var(--line); }
.awards li:last-child { border-bottom: 0; }
.awards strong { display: block; color: #8A4F0F; }
.awards em { display: block; }

/* people */
.people { display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px; margin: 16px 0 8px; }
/* photo is positioned in the left gutter so the name stays an inline link
   (its underline / hover wave then follows the text, line by line) */
.person {
    position: relative;
    min-height: 106px;
    padding: 14px 14px 14px 106px;
    border: 1px solid var(--line);
    border-radius: 12px;
    line-height: 1.4;
}
.person img { position: absolute; top: 14px; left: 14px; width: 76px; height: 76px; object-fit: cover; border-radius: 50%; }
.person a { font-weight: 700; }
.person .org { display: block; font-size: 15px; }
.person .role { display: block; margin-top: 4px; color: var(--muted); font-size: 14px; }

.name-list { columns: 2; column-gap: 40px; margin: 12px 0 8px; padding-left: 20px; }
.name-list li { break-inside: avoid; margin-bottom: 6px; }

/* news */
.news { margin: 16px 0; padding: 0; list-style: none; }
.news-item { padding: 20px 0; border-bottom: 1px solid var(--line); scroll-margin-top: 16px; }
.news-item:first-child { padding-top: 0; }
.news-date {
    display: inline-block;
    margin: 0 0 6px;
    padding: 0 10px;
    border-radius: 999px;
    background: var(--ocean-100);
    color: var(--ocean-800);
    font-size: 14px;
    font-weight: 700;
}
.news-item p { margin: 8px 0 0; }
.news-sign { color: var(--muted); font-weight: 600; }
.news-item img { display: block; margin: 12px 0 0; border-radius: 8px; }

/* ------------------------------------------------------------------ footer */
.site-footer { background: var(--ocean-900); color: var(--ocean-100); font-size: 15px; }
.site-footer .wrap { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 12px 32px; padding-top: 22px; padding-bottom: 26px; }
.site-footer a { color: #fff; }
.site-footer p { margin: 0; }

/* ------------------------------------------------------------------ responsive */
@media (max-width: 1000px) {
    .layout { grid-template-columns: 1fr; gap: 24px; }
    .sidebar { display: grid; grid-template-columns: repeat(2, 1fr); gap: 0 16px; }
}

@media (max-width: 760px) {
    body { font-size: 16.5px; }
    .wrap { padding-left: 16px; padding-right: 16px; }
    .topbar-inner { flex-direction: column; align-items: flex-start; gap: 10px; }
    .brand img { width: 48px; height: 48px; border-radius: 10px; }
    .brand-name { font-size: 26px; }
    .brand-sub { font-size: 14px; }
    .venue { text-align: left; }

    /* tabs become a 3x2 grid of buttons, still fully visible */
    .tabs ul { display: grid; grid-template-columns: repeat(3, 1fr); gap: 6px; padding-top: 10px; padding-bottom: 10px; }
    .tabs a { padding: 9px 4px; border-radius: 8px; background: rgba(255, 255, 255, .1); font-size: 15.5px; text-align: center; }
    .tabs a[aria-current="page"]::after { bottom: 3px; }

    .content h2 { font-size: 24px; }
    .home-hero img { height: 220px; object-position: 95% center; }
    .home-hero figcaption { padding: 16px 18px; }
    .home-hero strong { font-size: 24px; }
    .sidebar { grid-template-columns: 1fr; }
    .speaker { grid-template-columns: 1fr; gap: 12px; }
    .speaker img { width: 96px; height: 96px; }
    .latest li { padding-left: 0; }
    .latest .d { position: static; display: block; }
    .people { grid-template-columns: 1fr; }
    .name-list { columns: 1; }

    .schedule, .schedule tbody, .schedule tr, .schedule td { display: block; width: 100%; }
    .schedule thead { display: none; }
    .schedule { border: 0; }
    .schedule tr { margin-bottom: 12px; border: 1px solid var(--line); border-radius: 10px; overflow: hidden; }
    .schedule td { border: 0; padding: 10px 14px; }
    .schedule td.time { width: auto; padding-bottom: 0; }
    .schedule td.chair { width: auto; padding-top: 0; }
    .schedule td.chair::before { content: "Chair: "; font-weight: 700; }
    .schedule td.chair:empty { display: none; }
}