/* ============================================================
   Conference Session Element — conference-session.css
   ============================================================ */

/* ── Custom properties (defaults; overridden per-card via inline style) ── */
.cse-card {
    --cse-accent:        #1a56db;
    --cse-accent-light:  color-mix(in srgb, var(--cse-accent) 12%, transparent);
    --cse-accent-mid:    color-mix(in srgb, var(--cse-accent) 22%, transparent);

    /* Text colours — defaults; overridden per-card by inline <style> */
    --cse-text:          #1c2333;
    /* Muted is always the text colour at 55% opacity over the card background */
    --cse-muted:         color-mix(in srgb, var(--cse-text) 55%, var(--cse-bg));

    --cse-bg:            #ffffff;
    --cse-border:        #e5e9f0;
    --cse-divider:       #edf0f5;

    --cse-radius:        12px;
    --cse-radius-sm:     6px;
    --cse-avatar-size:   48px;
    --cse-shadow:        0 2px 8px rgba(0,0,0,.06), 0 0 0 1px var(--cse-border);
    --cse-shadow-hover:  0 8px 24px rgba(0,0,0,.10), 0 0 0 1px color-mix(in srgb, var(--cse-accent) 30%, transparent);

    /* Typography */
    --cse-font-display: 'Georgia', 'Times New Roman', serif;
    --cse-font-body:    system-ui, -apple-system, 'Segoe UI', sans-serif;
}

/* ── Card shell ───────────────────────────────────────────── */
.cse-card {
    display:          grid;
    grid-template-columns: auto 1fr;
    background:       var(--cse-bg);
    border-radius:    var(--cse-radius);
    box-shadow:       var(--cse-shadow);
    overflow:         hidden;
    transition:       box-shadow 0.25s ease, transform 0.25s ease;
    font-family:      var(--cse-font-body);
    color:            var(--cse-text);
    margin-block:     1.5rem;
}

.cse-card:hover {
    box-shadow: var(--cse-shadow-hover);
    transform:  translateY(-2px);
}

/* ── Date strip (left column) ─────────────────────────────── */
.cse-date-strip {
    display:          flex;
    flex-direction:   column;
    align-items:      center;
    justify-content:  flex-start;
    gap:              0.75rem;
    padding:          1.5rem 1.25rem;
    background:       var(--cse-accent);
    color:            #ffffff;
    min-width:        80px;
    text-align:       center;
}

.cse-date-block {
    display:        flex;
    flex-direction: column;
    align-items:    center;
    line-height:    1.1;
}

.cse-date-day {
    font-family:  var(--cse-font-display);
    font-size:    2.25rem;
    font-weight:  700;
    letter-spacing: -0.02em;
}

.cse-date-month {
    font-size:      0.6875rem;
    font-weight:    600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-top:     0.15rem;
    opacity:        0.85;
}

.cse-time-block {
    display:        flex;
    flex-direction: column;
    align-items:    center;
    gap:            0.2rem;
    padding-top:    0.5rem;
    border-top:     1px solid rgba(255,255,255,0.25);
    width:          100%;
}

.cse-clock-icon {
    width:   1rem;
    height:  1rem;
    opacity: 0.8;
    flex-shrink: 0;
}

.cse-time-range {
    display:        flex;
    flex-direction: column;
    align-items:    center;
    font-size:      0.75rem;
    font-weight:    500;
    opacity:        0.9;
    line-height:    1.4;
    gap:            0.05rem;
}

.cse-time-sep {
    opacity: 0.6;
    font-size: 0.65rem;
}

/* ── Body (right column) ──────────────────────────────────── */
.cse-body {
    display:        flex;
    flex-direction: column;
    gap:            0.875rem;
    padding:        1.5rem 1.75rem;
}

/* ── Title ────────────────────────────────────────────────── */
.cse-title {
    font-family:    var(--cse-font-display);
    font-size:      1.3125rem;
    font-weight:    700;
    color:          var(--cse-text);
    line-height:    1.25;
    margin:         0;
    letter-spacing: -0.01em;
}

/* ── Tags / badges ────────────────────────────────────────── */
.cse-tags {
    display:   flex;
    flex-wrap: wrap;
    gap:       0.375rem;
}

.cse-badge {
    display:         inline-flex;
    align-items:     center;
    padding:         0.2rem 0.65rem;
    background:      var(--cse-accent-light);
    color:           var(--cse-accent);
    border:          1px solid var(--cse-accent-mid);
    border-radius:   999px;
    font-size:       0.6875rem;
    font-weight:     600;
    text-transform:  uppercase;
    letter-spacing:  0.07em;
    line-height:     1.5;
    transition:      background 0.15s ease, color 0.15s ease;
}

.cse-badge:hover {
    background: var(--cse-accent);
    color:      #ffffff;
}

/* ── Description ──────────────────────────────────────────── */
.cse-description {
    font-size:   0.9rem;
    line-height: 1.65;
    color:       var(--cse-muted);
}

.cse-description p:first-child { margin-top: 0; }
.cse-description p:last-child  { margin-bottom: 0; }

/* ── People section ───────────────────────────────────────── */
.cse-people {
    display:       flex;
    flex-wrap:     wrap;
    gap:           1.25rem 2rem;
    padding-top:   0.875rem;
    border-top:    1px solid var(--cse-divider);
    margin-top:    0.125rem;
}

.cse-people-group {
    display:        flex;
    flex-direction: column;
    gap:            0.5rem;
    min-width:      160px;
}

.cse-people-label {
    font-size:      0.6375rem;
    font-weight:    700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color:          var(--cse-accent);
    margin:         0;
}

.cse-person-list {
    list-style: none;
    margin:     0;
    padding:    0;
    display:    flex;
    flex-direction: column;
    gap:        0.625rem;
}

.cse-person {
    display:     flex;
    align-items: center;
    gap:         0.625rem;
}

/* ── Avatar ───────────────────────────────────────────────── */
.cse-avatar-wrap {
    flex-shrink: 0;
    width:       var(--cse-avatar-size);
    height:      var(--cse-avatar-size);
    border-radius: 50%;
    overflow:    hidden;
    border:      2px solid var(--cse-accent-mid);
    background:  var(--cse-divider);
    display:     flex;
    align-items: center;
    justify-content: center;
}

img.cse-person-photo {
    width:      100%;
    height:     100%;
    object-fit: cover;
    display:    block;
}

span.cse-person-photo--placeholder {
    width:    100%;
    height:   100%;
    display:  flex;
    align-items: center;
    justify-content: center;
    color:    var(--cse-muted);
}

span.cse-person-photo--placeholder svg {
    width:  70%;
    height: 70%;
}

/* ── Person info ──────────────────────────────────────────── */
.cse-person-info {
    display:        flex;
    flex-direction: column;
    gap:            0.15rem;
    min-width:      0;
}

.cse-person-name {
    font-size:   0.875rem;
    font-weight: 600;
    color:       var(--cse-text);
    line-height: 1.2;
    white-space: nowrap;
    overflow:    hidden;
    text-overflow: ellipsis;
}

.cse-person-org {
    font-size:   0.75rem;
    color:       var(--cse-muted);
    line-height: 1.2;
    white-space: nowrap;
    overflow:    hidden;
    text-overflow: ellipsis;
}

/* ── Responsive ───────────────────────────────────────────── */
@media (max-width: 600px) {
    .cse-card {
        grid-template-columns: 1fr;
    }

    .cse-date-strip {
        flex-direction: row;
        justify-content: flex-start;
        gap: 1rem;
        padding: 0.875rem 1.25rem;
        min-width: unset;
    }

    .cse-date-block {
        flex-direction: row;
        gap: 0.4rem;
        align-items: baseline;
    }

    .cse-date-day {
        font-size: 1.5rem;
    }

    .cse-time-block {
        flex-direction: row;
        border-top: none;
        border-left: 1px solid rgba(255,255,255,0.25);
        padding-top: 0;
        padding-left: 1rem;
        align-items: center;
        gap: 0.35rem;
    }

    .cse-time-range {
        flex-direction: row;
        align-items: center;
        gap: 0.25rem;
    }

    .cse-body {
        padding: 1.25rem;
    }
}

/* ── Dark-mode support ─────────────────────────────────────────────────────────
   Background, borders, and shadows flip automatically.
   --cse-text is overridden per-card by the @media block the template emits,
   so --cse-muted (derived from --cse-text) also updates automatically.      */
@media (prefers-color-scheme: dark) {
    .cse-card {
        --cse-bg:       #1a1d27;
        --cse-border:   #2d3147;
        --cse-divider:  #252838;
        --cse-shadow:   0 2px 8px rgba(0,0,0,.3), 0 0 0 1px var(--cse-border);
    }
}