/* ============================================================
   RoboFineMani @ CoRL 2026 — site-specific overrides
   (kept separate from vendored theme CSS)
   ============================================================ */

/* --- Home hero: guarantee full viewport regardless of html height chain --- */
.intro-header { min-height: 100vh; }

/* --- Readable content column --------------------------------- */
.page-section {
    background-color: #f8f8f8;
    padding: 80px 0 90px;          /* generous breathing room top & bottom */
}
.page-section .wrap {
    max-width: 900px;
    margin: 0 auto;
    padding: 0 28px;
}
.page-section h3.section-heading {
    color: #164FC9;
    font-weight: 700;
    margin-top: 58px;              /* clear gap above each sub-section */
    margin-bottom: 26px;
}
/* first heading in a page shouldn't push down from the top */
.page-section .wrap > h3.section-heading:first-child {
    margin-top: 0;
}
.page-section h4.section-heading {
    color: #164FC9;
    margin-top: 30px;
    margin-bottom: 16px;
}
.page-section p,
.page-section li {
    text-align: justify;
    font-family: "Lato", Helvetica, Arial, sans-serif;
    font-size: 20px;
    font-weight: 300;          /* Lato Light — matches ltdl-ijcai21 .lead */
    line-height: 1.8;
    color: #34495E;
}
.page-section p { margin-bottom: 20px; }
.page-section li { margin-bottom: 8px; }
.page-section ul { margin-bottom: 24px; padding-left: 22px; }
/* definition-style list: bold term + description on the next line */
.page-section ul.def-list > li { margin-bottom: 18px; }
.page-section ul.def-list > li > b { display: inline-block; margin-bottom: 4px; }
.lead-intro {
    font-family: "Lato", Helvetica, Arial, sans-serif;
    font-size: 20px;
    font-weight: 300;          /* Lato Light — matches ltdl-ijcai21 .lead */
    line-height: 1.8;
    color: #34495E;
    margin-bottom: 30px;
}

/* --- In-text links in body paragraphs: underlined, hover→title blue --- */
.page-section .wrap > p a {
    color: #34495E;
    text-decoration: underline;
    transition: color 0.15s ease;
}
.page-section .wrap > p a:hover,
.page-section .wrap > p a:focus {
    color: #164FC9;            /* title blue on hover */
    text-decoration: underline;
}

/* --- Inner-page text title (no cover image) ------------------ */
.page-head-block {
    text-align: left;
    margin-bottom: 46px;
}
.page-head {
    color: #164FC9;
    font-weight: 700;
    font-size: 2.1em;
    margin: 0;
}
.page-head-sub {
    color: #666;
    font-size: 1.05em;
    line-height: 1.6;
    margin: 14px 0 0;
    max-width: 760px;
}
/* tighten the first content element directly under the title */
.page-head-block + h3.section-heading,
.page-head-block + .lead-intro,
.page-head-block + .people-grid { margin-top: 0; }

/* --- Challenge / track cards --------------------------------- */
.track-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 26px;
    margin: 38px 0 16px;
}
.track-card {
    flex: 1 1 240px;
    background: #fff;
    border: 1px solid #e6e6e6;
    border-top: 4px solid #164FC9;
    border-radius: 8px;
    padding: 28px 26px 24px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.04);
}
.track-card h4 {
    color: #164FC9;
    margin: 0 0 14px;
    font-weight: 700;
}
.track-card p { font-size: 16px; line-height: 1.7; margin: 0; text-align: left; }

/* --- People (speakers / organizers) -------------------------- */
.people-grid {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 52px 64px;
    margin: 52px 0 24px;
}
/* wider column so the 4 speakers sit on a single row */
.wrap.people-wrap { max-width: 1140px; }
/* wider still so all 5 organizers sit on a single row */
.wrap.people-wrap-5 { max-width: 1280px; }
.person {
    display: flex;
    flex-direction: column;
    align-items: center;   /* photo + name + affiliation share one centered axis */
    text-align: center;
    min-width: 168px;      /* photo width; box hugs its widest child */
}
/* speakers: fixed equal-width columns → perfectly even spacing */
.people-wrap .person { width: 250px; min-width: 250px; }
.people-wrap .people-grid { gap: 48px 20px; }
.person img {
    width: 168px;
    height: 168px;
    border-radius: 50%;
    object-fit: cover;
    margin-bottom: 12px;
    background: #fff;
    border: 3px solid #fff;
    box-shadow: 0 3px 12px rgba(0,0,0,0.12);
}
/* captions under avatars stay centered (override the justified body rule) */
.person .name { font-weight: 700; margin: 0; color: #222; font-size: 17px; text-align: center; }
/* names never turn blue, even when linked */
.person .name a { color: inherit; text-decoration: none; }
.person .name a:hover { text-decoration: underline; }
.person .affil { margin: 6px 0 0; font-size: 15px; line-height: 1.5; color: #666; text-align: center; white-space: nowrap; }
.person .photo-placeholder {
    width: 168px;
    height: 168px;
    border-radius: 50%;
    margin: 0 auto 12px;
    background: #e9eef9;
    border: 2px dashed #b9c6e8;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #8a9ac4;
    font-size: 2.6em;
    font-weight: 700;
}

/* --- Important dates ----------------------------------------- */
.dates-table {
    width: 100%;
    border-collapse: collapse;
    margin: 28px 0 12px;
}
.dates-table td {
    padding: 15px 16px;
    border-bottom: 1px solid #e6e6e6;
    font-size: 17px;
}
.dates-table td:first-child { color: #333; }
.dates-table td:last-child {
    text-align: right;
    font-weight: 700;
    color: #164FC9;
    white-space: nowrap;
}

/* --- Program table ------------------------------------------- */
.program-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 18px;
}
.program-table th, .program-table td {
    border: 1px solid #ccc;
    padding: 10px 12px;
    text-align: center;
}
.program-table th { background: #f2f2f2; }

/* --- Sticky footer: footer sits at the bottom; short pages get
       whitespace between content and the bar ------------------- */
body {
    height: auto;          /* override theme's fixed height:100% */
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}
.page-section { flex: 1 0 auto; }   /* grows to fill leftover space */

/* --- Footer -------------------------------------------------- */
.site-footer {
    flex-shrink: 0;
    background: #1f2a44;
    color: #cdd6ea;
    text-align: center;
    padding: 50px 20px;
    font-size: 0.95em;
    line-height: 1.7;
}
.site-footer .footer-title { font-weight: 700; color: #fff; font-size: 1.25em; margin-bottom: 6px; }
.site-footer .footer-sub { color: #aab6d4; max-width: 760px; margin: 0 auto 12px; }
.site-footer .footer-meta { font-size: 0.9em; color: #8a97ba; }
.site-footer a { color: #9fb6ef; }

/* --- Nav: the selected item looks like the others — never blue --- */
.navbar-default .navbar-nav > li.active > a,
.navbar-default .navbar-nav > li.active > a:focus {
    color: #34495e;
    background-color: transparent;
}
.navbar-default .navbar-nav > li.active > a:hover {
    color: #1abc9c;            /* same hover as every other nav item */
    background-color: transparent;
}

@media (max-width: 768px) {
    .content-section-a { padding: 5px 20px; }
    .intro-header .page-title { font-size: 0.5em; }
}