/* ── Variables ──────────────────────────────────────────────────────── */

:root {
  --cirms-blue: #001f4f;
  --background: #e2e8f5;
  --text: #1e293b;
  --muted: #94a3b8;

  --plen-bg: #ffffff; --plen-border: #94a3b8; --plen-text: var(--text);
  --high-bg: #ffffde; --high-border: #b8940a; --high-text: #907823;

  --mapp-bg: #eff6ff; --mapp-border: #6366f1; --mapp-text: #1e3a8a;
  --rphs-bg: #f0fdf4; --rphs-border: #16a34a; --rphs-text: #14532d;
  --rpme-bg: #ffefde; --rpme-border: #d97706; --rpme-text: #78350f;

  --gutter-width: 52px
}

/* ── Base ───────────────────────────────────────────────────────────── */

body {
  font-family: 'DM Sans', sans-serif;
  background: var(--background);
  color: var(--text);
}

/* ── Sticky band ─────────────────────────────────────────────────────── */

.sticky-band {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--background);
  box-shadow: 0 2px 12px rgba(0,0,0,0.2);
}

/* ── Header ─────────────────────────────────────────────────────────── */

.conf-header {
  background: var(--cirms-blue);
  color: #fff;
  padding: 1rem 0 1.4rem;
}
.conf-header h1 {
  font-size: 2.2rem;
  font-weight: 600;
  letter-spacing: -0.03em;
  margin: 0;
}
.conf-header .conf-meta {
  color: var(--muted);
  font-size: 1rem;
  margin: 0
}

/* ── Tabs ────────────────────────────────────────────────────────────── */

.nav-tabs {
  border-bottom: none;
  gap: 0.35rem;
  padding: 0 0 0.5rem;
  background: var(--background);
}
.nav-tabs .nav-link {
  border: none;
  border-radius: 6px;
  color: #64748b;
  font-weight: 500;
  font-size: 1rem;
  padding: 0.5rem 1.35rem;
  position: relative;
  transition: background 0.15s, color 0.15s;
}
.nav-tabs .nav-link:hover {
  color: #334155;
  background: #e2e8f0;
}
.nav-tabs .nav-link.active {
  background: var(--cirms-blue);
  color: #fff;
  font-weight: 600;
}

/* ── Mobile day select ───────────────────────────────────────────────── */

.day-tabs-row {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding-top: 0.75rem;
}
.grid-row-label {
  width: 52px;
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: var(--muted);
  text-align: right;
  padding-right: 6px;
  flex-shrink: 0;
  align-self: center;
}
.day-select-mobile {
  display: none;
}
.day-label-short { display: none; }
.day-label-full  { display: inline; }
.day-tabs-desktop  {
  display: flex;
}
.track-legend {
  display: none;
}
.legend-item {
  display: flex;
  align-items: center;
  gap: 0.4rem;
}
.legend-swatch {
  width: 12px;
  height: 12px;
  border-radius: 3px;
  flex-shrink: 0;
}
.legend-abbr {
  font-weight: 700;
}

/* ── Track column headers ────────────────────────────────────────────── */

.track-header-row {
  display: grid;
  grid-template-columns: var(--gutter-width) 1fr 1fr 1fr;
  gap: 8px;
  padding: 6px 0 12px;
}

.track-col-hdr {
  text-align: center;
  padding: 0.6rem 0.25rem;
  border-radius: 6px;
  color: #fff;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.25rem;
}
.track-abbr {
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: 0.06em;
}
.track-full-name {
  font-size: 0.82rem;
  font-weight: 400;
  opacity: 0.88;
  line-height: 1.2;
}
.track-col-hdr.mapp { background: var(--mapp-border); }
.track-col-hdr.rphs { background: var(--rphs-border); }
.track-col-hdr.rpme { background: var(--rpme-border); }

/* ── Schedule grid ───────────────────────────────────────────────────── */

.schedule-grid {
  display: grid;
  grid-template-columns: var(--gutter-width) 1fr 1fr 1fr;
  column-gap: 8px;
}

/* ── Time labels ─────────────────────────────────────────────────────── */

.time-lbl {
  font-family: 'DM Mono', monospace;
  font-size: 0.75rem;
  color: var(--text);
  opacity: 0.5;
  font-weight: 600;
  text-align: right;
  padding-right: 6px;
  padding-top: 2px;
  align-self: start;
  grid-column: 1;
}

/* ── Base card ───────────────────────────────────────────────────────── */

.sc {
  border-radius: 7px;
  padding: 7px 11px;
  border-left: 3px solid transparent;
  font-size: 0.92rem;
  align-self: stretch;
  transition: box-shadow 0.15s;
}

.sc:hover {
  outline: 2px solid var(--track-color);
}

.sc-time  {
  font-family: 'DM Mono', monospace;
  font-size: 0.75rem;
  opacity: 0.55;
  margin-bottom: 2px;
}
.sc-title {
  font-weight: 600;
  line-height: 1.3;
  margin-bottom: 3px;
}
.sc-speaker {
  font-size: 0.86rem;
  opacity: 0.85;
}
.sc-affil {
  font-size: 0.82rem;
  opacity: 0.6;
}

/* ── Highlights and track cards ──────────────────────────────────────── */

.sc-highlight {
  background: var(--high-bg) !important;
  color: var(--high-text) !important;
  border-left-color: var(--high-border) !important;
  border-left-width: 5px;
  --track-color: var(--high-border) !important;
}


.sc-plen { --track-color: var(--plen-border); background: var(--plen-bg); border-left-color: var(--plen-border); color: var(--plen-text); }
.sc-mapp { --track-color: var(--mapp-border); background: var(--mapp-bg); border-left-color: var(--mapp-border); color: var(--mapp-text); }
.sc-rphs { --track-color: var(--rphs-border); background: var(--rphs-bg); border-left-color: var(--rphs-border); color: var(--rphs-text); }
.sc-rpme { --track-color: var(--rpme-border); background: var(--rpme-bg); border-left-color: var(--rpme-border); color: var(--rpme-text); }
.sc-mute { --track-color: var(--plen-border); background: var(--plen-bg); border-left-color: var(--plen-border); color: var(--plen-text); opacity:0.6;
  background-image: repeating-linear-gradient(
    -45deg,
    transparent,
    transparent 6px,
    rgba(0,0,0,0.045) 6px,
    rgba(0,0,0,0.045) 10px
  );
}

/* ── Session header strip ────────────────────────────────────────────── */

.sess-hdr {
  border-radius: 5px;
  padding: 8px 11px 5px;
  font-size: 0.82rem;
  font-weight: 500;
  align-self: stretch;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 2px;
}
.sess-title     { font-weight: 700; line-height: 1.3; }
.sess-chair     { font-size: 0.78rem; opacity: 0.88; }

/* Title row: title on left, joint pill on right */
.sess-hdr-top {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.6rem;
}
.sess-hdr.mapp  { background: var(--mapp-border); color: #fff; }
.sess-hdr.rphs  { background: var(--rphs-border); color: #fff; }
.sess-hdr.rpme  { background: var(--rpme-border); color: #fff; }
.sess-hdr.full  { background: #64748b; color: #fff; }

/* Joint session header: hard-edge diagonal split between two track colours,
   with a soft drop-shadow stripe on the leading edge of the right panel.   */
.sess-hdr.joint-split {
  color: #fff;
  padding-right: 26%;
  background:
    linear-gradient(105deg,
      transparent          75%,
      rgba(0,0,0,0.6)    75%,
      rgba(0,0,0,0)      calc(75% + 8px)
    ),
    linear-gradient(105deg,
      var(--left-color)  75%,
      var(--right-color) 75%
    );
}

/* ── Now marker (current-time line) ──────────────────────────────────── */

.now-marker {
  grid-column: 1 / -1;
  display: flex;
  align-items: center;
  pointer-events: none;
  z-index: 10;
}
.now-marker::before {
  content: attr(data-time);
  font-family: 'DM Mono', monospace;
  font-size: 0.75rem;
  font-weight: 600;
  color: #ef4444;
  width: var(--gutter-width);
  text-align: right;
  padding-right: 10px;
  margin-left: -4px;
  flex-shrink: 0;
  box-sizing: border-box;
}
.now-marker::after {
  content: "";
  flex: 1;
  height: 2px;
  background: #ef4444;
  border-radius: 1px;
  margin-right: -16px;
}
.now-dots {
  display: flex;
  align-items: center;
  gap: 3px;
  flex-shrink: 0;
  margin-left: -5px;
  margin-right: -3px;
}
.now-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #ef4444;
  flex-shrink: 0;
}
/* Desktop: one dot sufficient — the spanning line signals the time */
.now-dot:not(:first-child) { display: none; }
.now-marker-extra {
  display: none;
}

/* ── Print track header (injected by JS; hidden on screen) ──────────── */

.print-track-hdr {
  display: none;
}

/* ── Mobile ──────────────────────────────────────────────────────────── */

@media screen and (max-width: 767px) {
  .track-legend {
    display: flex;
    flex-wrap: wrap;
    padding: 0.4rem 0 0.75rem;
    font-size: 0.95rem;
    color: #475569;
  }
  /* Track header is desktop-only — hidden on mobile */
  .track-header-row {
    display: none;
  }
  .grid-row-label {
    display: none;
  }
  .now-marker {
    display: flex !important;
    width: 100% !important;
    grid-column: unset !important;
    grid-row: unset !important;
    margin: 0;
    padding: 2px 0;
  }
  .now-marker::before {
    content: none; /* suppress time label and circle — dots take over */
    width: 0;
    padding: 0;
  }
  .now-marker::after {
    content: "";
    flex: 1;
    height: 2px;
    background: #ef4444;
    margin-left: -1px;
    margin-right: 0;
  }
  /* All N dots visible on mobile — override the desktop :not(:first-child) hide */
  .now-dot, .now-dot:not(:first-child) { display: block; }
  .now-marker-extra {
    display: flex !important;
  }
  .day-tabs-desktop {
    display: flex !important;
  }
  .day-select-mobile {
    display: none !important;
  }
  .day-label-short { display: inline; }
  .day-label-full  { display: none; }
  .schedule-grid {
    display: flex !important;
    flex-direction: column;
    gap: 5px;
  }
  .time-lbl { display: none; }
  .sc, .sess-hdr {
    width: 100% !important;
    grid-column: unset;
    grid-row: unset;
    margin: 0;
    /* order is set per-element via JS (style.order) */
  }

  /* darken just the time value inside cards — no time gutter on mobile */
  .sc-time-val {
    opacity: 1;
    font-weight: 600;
    color: var(--text);
  }

  /* hide duplicate joint cards on mobile */
  .joint-secondary {
    display: none;
  }
}


/* ══════════════════════════════════════════════════════════════════════
   PRINT STYLES  —  US Letter, portrait
   One day per page; colours preserved; screen chrome stripped.
   ══════════════════════════════════════════════════════════════════════ */

@media print {

  /* ── Page canvas ──────────────────────────────────────────────────── */

  @page {
    size: letter portrait;
    margin: 0.55in 0.5in 0.5in;
  }

  html {
    margin: 0;
  }

  /* Force every browser to print backgrounds & colours */
  *, *::before, *::after {
    -webkit-print-color-adjust: exact !important;
            print-color-adjust: exact !important;
  }

  /* ── Global resets ────────────────────────────────────────────────── */

  body {
    background: #fff;
    color: var(--text);
    zoom: 0.72;
  }

  /* ── Hide screen-only chrome ──────────────────────────────────────── */

  .sticky-band,
  .now-marker,
  .now-marker-extra {
    display: none !important;
  }

  /* ── Show all day panes ───────────────────────────────────────────── */

  .tab-pane {
    display: block !important;
    opacity: 1 !important;
    visibility: visible !important;
  }

  /* ── Day heading (injected via data attribute by JS) ──────────────── */

  .tab-pane::before {
    content: attr(data-print-label);
    display: block;
    font-family: 'DM Sans', sans-serif;
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--cirms-blue);
    padding: 0.35rem 0 0.3rem;
    border-bottom: 2px solid var(--cirms-blue);
    margin-bottom: 0.4rem;
  }

  /* ── One day per page ─────────────────────────────────────────────── */

  .tab-pane + .tab-pane {
    break-before: page;
  }

  /* ── Keep cards whole across page breaks ──────────────────────────── */

  .sc, .sess-hdr {
    break-inside: avoid;
  }

  /* ── Full-width layout ────────────────────────────────────────────── */

  .container {
    max-width: 100% !important;
    padding: 0 !important;
  }

  /* ── Title bar padding ────────────────────────────────────────────── */

  .conf-header {
    margin-left: calc(var(--gutter-width) + 8px);
    padding-top: 1rem;
    padding-left: 2rem;
    padding-right: 2rem;
  }

  /* ── Day label: indent to align with card columns, not time gutter ── */

  .tab-pane::before {
    margin-left: calc(var(--gutter-width) + 8px);
    font-size: 1.6rem;
  }

  /* ── Reveal print track header ────────────────────────────────────── */

  .print-track-hdr {
    display: grid;
    grid-template-columns: var(--gutter-width) 1fr 1fr 1fr;
    gap: 8px;
    padding: 4px 0 8px;
    margin-bottom: 2px;
  }

  /* ── Tighten card & type sizes for print density ──────────────────── */

  .sc {
    padding: 5px 9px;
    font-size: 0.85rem;
  }

  .sc-title {
    font-size: 0.87rem;
  }

  .sc-time {
    font-size: 0.72rem;
  }

  .sc-speaker,
  .sc-affil {
    font-size: 0.78rem;
  }

  .sess-hdr {
    padding: 6px 9px 4px;
    font-size: 0.8rem;
    break-after: avoid;
  }

  .track-col-hdr {
    padding: 0.45rem 0.25rem;
  }

  .track-abbr {
    font-size: 0.88rem;
  }

  .track-full-name {
    font-size: 0.75rem;
  }

  /* Use system fonts to avoid embedding web fonts in the PDF */
  body, .sc, .sess-hdr, .conf-header, .track-col-hdr {
    font-family: system-ui, sans-serif;
  }
  .sc-time, .time-lbl, .now-marker::before {
    font-family: ui-monospace, monospace;
  }

  .sc-mute {
    background-image: none;
    background-color: #f1f5f9;
  }

}