body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  font-size: 14px;
  line-height: 1.6;
  font-weight: 400;
  color: #1e293b;
  background: #f1f5f9;
  -webkit-font-smoothing: antialiased;
}

body *::selection {
  background: #6366f1;
  color: #fff;
}

.container {
  max-width: 1000px;
}

/* ── Top strip ─────────────────────────────────────────── */
.top-strip {
  background: linear-gradient(90deg, #4f46e5 0%, #7c3aed 100%);
  height: 4px;
  width: 100%;
}

/* ── Header ─────────────────────────────────────────────── */
.header-box {
  background: linear-gradient(135deg, #1e1b4b 0%, #312e81 55%, #4f46e5 100%);
  color: #fff;
  border-left: none;
  border-radius: 14px;
  padding: 28px 32px 24px;
  margin-bottom: 20px;
  box-shadow: 0 8px 32px rgba(79, 70, 229, 0.25);
}

.header-box h1 {
  margin: 0 0 10px;
  font-size: 26px;
  font-weight: 700;
  color: #fff;
  line-height: 1.3;
  letter-spacing: -0.02em;
}

.header-box p {
  margin: 6px 0 0;
  font-size: 14px;
  font-weight: 400;
  color: rgba(255, 255, 255, 0.75);
}

.header-box a {
  color: #a5b4fc;
  text-decoration: none;
  border-bottom: 1px solid rgba(165, 180, 252, 0.35);
  font-weight: 500;
}

.header-box a:hover {
  color: #c7d2fe;
  border-bottom-color: rgba(199, 210, 254, 0.6);
}

.spinning-icon {
  display: inline-block;
  animation: spin 2s linear infinite;
  margin-right: 10px;
  opacity: 0.9;
}

@keyframes spin {
  0%   { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

/* ── Page header / filter panel ─────────────────────────── */
.page-header {
  margin-top: 20px;
  border-bottom: none;
}

#conf-title.page-header {
  border-bottom: none;
}

/* ── Filter section ──────────────────────────────────────── */
.tagtitle {
  display: block;
  font-size: 11px;
  font-weight: 700;
  color: #94a3b8;
  background: transparent;
  border-left: none;
  padding: 0 0 10px;
  box-shadow: none;
  margin-bottom: 4px;
  text-transform: uppercase;
  letter-spacing: 0.07em;
}

.mytitle {
  font-size: 11px;
  font-weight: 700;
  color: #94a3b8;
  padding: 4px 0;
  display: inline-block;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  margin-right: 6px;
  vertical-align: middle;
}

/* Pill-style filter checkboxes */
.checkbox {
  display: inline-block;
  margin: 4px 6px 4px 0;
  padding: 0;
  min-height: auto;
}

.checkbox label,
.form-inline .checkbox label {
  display: inline-flex;
  align-items: center;
  background: #fff;
  border: 1.5px solid #cbd5e1;
  border-radius: 20px;
  padding: 6px 16px !important;
  cursor: pointer;
  font-size: 13px;
  font-weight: 500;
  color: #475569;
  transition: background 0.15s ease, border-color 0.15s ease, color 0.15s ease;
  user-select: none;
  margin: 0;
  line-height: 1.5;
}

.checkbox label:hover {
  background: #ede9fe;
  border-color: #8b5cf6;
  color: #5b21b6;
}

.checkbox:has(input:checked) label {
  background: #4f46e5;
  border-color: #4f46e5;
  color: #fff;
}

.filter-checkbox {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
  margin: 0;
}

/* ── Past deadlines toggle ──────────────────────────────── */
.past-deadlines {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 14px;
  font-weight: 600;
  color: #64748b;
  background: #fff;
  padding: 12px 16px;
  border-radius: 10px;
  border: 1px solid #e2e8f0;
  border-left: 4px solid #94a3b8;
  margin-bottom: 20px;
  box-shadow: none;
  cursor: pointer;
  transition: background 0.15s ease, border-color 0.15s ease;
}

.past-deadlines:hover {
  background: #f8fafc;
  border-color: #cbd5e1;
  border-left-color: #6366f1;
}

/* ── Conference cards ────────────────────────────────────── */
.conf {
  background: #fff;
  border: 1px solid #e2e8f0;
  border-left: 4px solid #e2e8f0;
  border-radius: 10px;
  padding: 16px 20px 12px;
  margin-bottom: 10px;
  transition: box-shadow 0.18s ease, transform 0.18s ease;
}

.conf:hover {
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.08);
  transform: translateY(-1px);
}

.conf hr {
  display: none;
}

/* Urgency left border */
.conf.urgency-urgent  { border-left-color: #ef4444; }
.conf.urgency-warning { border-left-color: #f59e0b; }
.conf.urgency-ok      { border-left-color: #10b981; }

.past.conf {
  border-left-color: #cbd5e1 !important;
}

.conf-title {
  font-size: 17px;
  font-weight: 700;
  color: #1e293b;
  border-bottom: none;
  letter-spacing: -0.01em;
  transition: color 0.15s ease;
}

.conf-title:hover {
  color: #4f46e5;
}

.conf-row {
  margin-bottom: 5px;
}

/* ── Card meta (date, place, rank) ───────────────────────── */
.meta {
  font-size: 13px;
  color: #64748b;
  margin-top: 4px;
}

.conf-date i,
.conf-place i {
  margin-right: 4px;
  color: #6366f1;
  font-size: 12px;
}

.conf-place {
  margin-left: 12px;
}

.conf-place a {
  color: #6366f1;
}

.corerank-wrap {
  margin-top: 6px;
}

/* ── Timer / deadline ────────────────────────────────────── */
.timer {
  font-size: 17px;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.timer.urgent  { color: #dc2626; }
.timer.warning { color: #d97706; }
.timer.ok      { color: #059669; }

.deadline {
  font-size: 13px;
  margin-top: 4px;
  color: #475569;
}

.deadline-time {
  font-weight: 600;
  color: #1e293b;
}

.abstractdeadline {
  display: inline-block;
  background: #fff1f2;
  border: 1px solid #fecdd3;
  color: #be123c;
  border-radius: 5px;
  padding: 1px 8px;
  font-size: 12px;
  font-weight: 500;
  margin-top: 4px;
}

.conf-rebut {
  font-size: 12px;
  color: #64748b;
}

.conf-comment {
  font-size: 12px;
  color: #94a3b8;
}

/* ── Past opacity ────────────────────────────────────────── */
.past {
  opacity: 0.45;
}

/* ── Past events section ─────────────────────────────────── */
#past-events-section {
  margin-top: 8px;
  margin-bottom: 8px;
}

#past-events-title {
  margin-bottom: 30px;
  padding-bottom: 15px;
  border-bottom: 2px solid #ef4444;
}

/* ── Footer ──────────────────────────────────────────────── */
footer {
  font-size: 13px;
  color: #94a3b8;
  text-align: center;
  padding: 24px 0 16px;
}

.footer-text {
  color: #6366f1;
  border-bottom: 1px solid rgba(99, 102, 241, 0.3);
}

.footer-text:hover {
  color: #4f46e5;
}

/* ── Typography ──────────────────────────────────────────── */
h1, h2, h3 { letter-spacing: -0.01em; }

h1 { margin: 0 0 10px; font-size: 2em; line-height: 35px; }
h2 { margin: 0 0 10px; font-size: 1em; line-height: 30px; }
h3 { margin: 0; font-size: 20px; line-height: 25px; }

p { text-align: justify; }

a {
  text-decoration: none;
  border-bottom: 1px solid #e2e8f0;
  color: inherit;
}

a:hover, a:focus {
  color: inherit;
  text-decoration: none;
}

img { max-width: 100%; }

pre {
  color: #333;
  font-size: 12px;
  line-height: 17px;
}

/* ── Misc ────────────────────────────────────────────────── */
.note {
  font-size: 13px;
  margin-bottom: 5px;
}

#conf-timer {
  font-size: 72px;
  color: #444;
}

.pwc-link {
  color: #6366f1;
  text-decoration: none;
  border: none;
  vertical-align: middle;
}

.pwc-link:hover {
  color: #4f46e5;
  border-bottom: 1px solid #4f46e5;
}

.icon-inner {
  width: 1em;
  height: 1em;
  display: inline-block;
  vertical-align: middle;
  position: relative;
  fill: currentColor;
}

.pwc-icon { top: -2px; }

.badge-danger { background-color: #ef4444; }

/* ── Responsive ──────────────────────────────────────────── */
@media only screen and (max-width: 780px) {
  #conf-timer { font-size: 64px; }
  .calendar   { margin-bottom: 10px; }
  .header-box { padding: 20px 20px 16px; }
}

@media only screen and (max-width: 450px) {
  #conf-timer { font-size: 36px; }
  .note       { display: none; }
  .conf-row   { margin-bottom: 7px; }
  .header-box { padding: 16px; border-radius: 10px; }
  .conf       { padding: 12px 14px 10px; }
}

@media only screen and (max-width: 375px) {
  #conf-timer { font-size: 28px; }
}

.calendar { font-size: 12px; margin-top: 3px; }
.calendar img { margin-right: 5px; height: 20px; }
.ind-cal  { margin: 0 5px; }