* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

:root{
  --primary: #fafbfc;
  --secondary: #2c3e50;
  --accent: #64748b;
  --light: #ffffff;
  --dark: #1e293b;
  --card-bg: #ffffff;
  --border-light: #e2e8f0;
  --shadow: 0 1px 3px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
  --shadow-hover: 0 4px 12px rgba(0, 0, 0, 0.08), 0 2px 4px rgba(0, 0, 0, 0.04);
  --line-color: 1px solid #e2e8f0;
  --accent-blue: #3b82f6;
  --accent-soft: #dbeafe;
  --text-muted: #64748b;
}

[data-theme="dark"] {
  --primary: #0f172a;
  --secondary: #e2e8f0;
  --accent: #94a3b8;
  --light: #0f172a;
  --dark: #f1f5f9;
  --card-bg: #1e293b;
  --border-light: #334155;
  --shadow: 0 1px 3px rgba(0, 0, 0, 0.3), 0 1px 2px rgba(0, 0, 0, 0.2);
  --shadow-hover: 0 4px 12px rgba(0, 0, 0, 0.4), 0 2px 4px rgba(0, 0, 0, 0.3);
  --type-box: inset 2px 2px 5px #1a1a1a, inset -3px -3px 7px #2a2a2a;
  --line-color: 1px solid #334155;
  --accent-blue: #60a5fa;
  --accent-soft: #1e3a5f;
  --text-muted: #94a3b8;
}

body {
  font-size: 16px;
  line-height: 1.7;
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  background-color: var(--primary);
  color: var(--secondary);
  transition: background-color 0.3s ease, color 0.3s ease;
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Helvetica Neue', Arial, sans-serif;
}

body *::selection {
  background: var(--accent-soft);
  color: var(--secondary);
}

.container {
  max-width: 1024px;
  padding: 0 2rem;
}

.top-strip {
  background: linear-gradient(135deg, var(--accent-blue) 0%, #6366f1 100%);
  height: 3px;
  width: 100%;
}

h1,
h2,
h3 {
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--secondary);
}

h1 {
  margin: 0 0 1rem;
  font-size: 2.25rem;
  line-height: 1.2;
}

h2 {
  margin: 0 0 0.75rem;
  font-size: 1.75rem;
  line-height: 1.3;
}

h3 {
  margin: 0;
  font-size: 1.25rem;
  line-height: 1.4;
}

.header{
  background-color: var(--card-bg);
  color: var(--secondary);
  border-bottom: var(--line-color);
  backdrop-filter: blur(12px);
  transition: all 0.3s ease;
  padding: 1rem 0;
  position: sticky;
  top: 0;
  z-index: 1000;
}

.theme-ic{
  width: 20px;
  height: 20px;
  cursor: pointer;
  transition: transform 0.3s ease, opacity 0.3s ease;
  fill: var(--accent);
}

.theme-ic:hover{
  transform: rotate(180deg);
  opacity: 0.7;
}

.theme-ic.light{
  fill: var(--accent);
}

.header .navbar-brand{
  color: var(--secondary);
  font-weight: 700;
  letter-spacing: -0.02em;
  font-size: 1.5rem;
}

.brand-section{
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.brand-subtitle{
  font-size: 0.75rem;
  color: var(--text-muted);
}

.brand-subtitle .pwc-link{
  color: var(--text-muted);
  transition: color 0.2s ease;
}

.brand-subtitle .pwc-link:hover{
  color: var(--accent-blue);
}

.header-container .header-icons{
  justify-content: flex-end !important;
}

.page-header {
  margin-top: 3rem;
  margin-bottom: 3rem;
}

.main-title {
  background: linear-gradient(135deg, var(--accent-blue) 0%, #6366f1 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 1.25rem;
}

.page-description {
  font-size: 1.125rem;
  line-height: 1.8;
  max-width: 48rem;
  margin: 0 auto;
  margin-bottom: 2rem;
}

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

#conf-full-name {
  margin-bottom: 5px;
}

.conf-ic{
  width: 16px;
  height: 16px;
  fill: var(--accent);
  transition: fill 0.2s ease;
}

.conf-ic:hover{
  fill: var(--accent-blue);
}

p.authors {
  margin-bottom: 0.5rem;
  color: var(--text-muted);
  font-size: 1.125rem;
}

p.authors a {
  border-color: var(--border-light);
}

img {
  max-width: 100%;
}

p {
  text-align: justify;
}

a {
  text-decoration: none;
  border-bottom: 1px solid var(--border-light);
  color: var(--accent-blue);
  transition: all 0.2s ease;
}

p.lead.authors a {
  border-bottom: none;
}

a:hover,
a:focus {
  color: var(--accent-blue);
  text-decoration: none;
  border-bottom-color: var(--accent-blue);
}

a:focus-visible {
  outline: 2px solid var(--accent-blue);
  outline-offset: 2px;
  border-radius: 2px;
}

.thumb {
  margin: 1.5rem 0;
  border: var(--line-color);
  border-radius: 0.5rem;
  overflow: hidden;
}

pre {
  color: var(--secondary);
  font-size: 0.875rem;
  line-height: 1.6;
  background-color: var(--accent-soft);
  padding: 1rem;
  border-radius: 0.5rem;
  overflow-x: auto;
}

footer {
  font-size: 0.875rem;
  color: var(--text-muted);
  padding: 2rem 0;
  margin-top: 4rem;
}

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

.conf-title,
.conf-title-small,
.conf-title-icon {
  font-size: 1.125rem;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.conf-title-small {
  display: none;
}

.conf-title-icon {
  white-space: nowrap;
  font-size: 20px;
}

.deadline,
.meta {
  font-size: 0.875rem;
  color: var(--text-muted);
}

.note {
  font-size: 0.875rem;
  margin-bottom: 0.5rem;
  padding: 0.5rem 0.75rem;
  background-color: var(--accent-soft);
  border-radius: 0.5rem;
  border-left: 3px solid var(--accent-blue);
}

.timer,
.timer-small {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--secondary);
  font-variant-numeric: tabular-nums;
}

#confs {
  margin-top: 20px;
}
.timer-small {
  display: none;
}

#conf-timer {
  font-size: 4.5rem;
  color: var(--accent-blue);
  margin-top: 2.5rem;
  margin-bottom: 1rem;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.02em;
}

#conf-key-facts {
  margin-bottom: 10px;
  padding: .2rem 0;
  border-top: var(--line-color);
  border-bottom: var(--line-color);
}

#conf-key-facts > div{
  margin: .3rem 0;
}

.conf-sub, .conf-type, .ws-conf-name {
  color: var(--accent-blue);
  background: var(--accent-soft);
  border-radius: 1rem;
  font-size: 0.75rem;
  padding: 0.375rem 0.75rem;
  margin-right: 0.5rem;
  margin-bottom: 0.375rem;
  cursor: pointer;
  font-weight: 500;
  display: inline-block;
  transition: all 0.2s ease;
  border: 1px solid transparent;
}

.conf-sub:hover, .conf-type:hover {
  background: var(--accent-blue);
  color: white;
  transform: translateY(-1px);
}

.ws-conf-name{
  background-color: var(--accent-soft);
  z-index: 1;
  cursor: default;
}

.ws-conf-name:hover{
  transform: none;
}

.conf-sub::selection {
  background: var(--accent-soft);
}

.conf-type{
  background-color: var(--accent-soft);
}

body[data-theme="dark"] .conf-sub, body[data-theme="dark"] .conf-type, body[data-theme="dark"] .ws-conf-name{
  background-color: var(--accent-soft) !important;
  color: var(--accent-blue) !important;
  border-color: var(--border-light);
}
.checkbox input[type="checkbox"]:checked:after {
  background-color: var(--accent-blue);
  border-color: var(--accent-blue);
}

.checkbox input[type="checkbox"]:after,
.checkbox input[type="checkbox"]:focus:after {
  border-color: var(--accent-blue);
}

#sort-order-checkbox {
    text-align: right;
    font-size: 0.875rem;
    padding-top: 0.5rem;
    color: var(--text-muted);
}

#sort-order-checkbox input[type="checkbox"]:checked:after {
    background-color: var(--accent-blue);
    border-color: var(--accent-blue);
  }
  
#sort-order-checkbox input[type="checkbox"]:after,
#sort-order-checkbox input[type="checkbox"]:focus:after {
    border-color: var(--accent-blue);
}

.filter-label {
  text-align: right;
  font-weight: 500;
  color: var(--secondary);
}


.pwc-link {
  text-decoration: none;
  border: none;
  vertical-align: middle;
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
}

.pwc-link:hover {
  border-bottom: none;
}

.icon-inner {
  width: 1rem;
  height: 1rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  vertical-align: middle;
  position: relative;
}

.icon-inner img{
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.pwc-icon {
  color: var(--text-muted);
}

.twitter-github-icons {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  line-height: 1;
}

.twitter-github-icons iframe{
  vertical-align: middle;
}

#past-events-title {
  padding-bottom: 1rem;
  margin-top: 3rem;
  border-bottom: 2px solid var(--border-light);
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--text-muted);
}

.badge-link {
  vertical-align: middle; 
  margin-bottom: 3px;
  margin-left: 2px;
  margin-right: 2px;
}


.badge-danger {
  background-color: #ef4444;
  color: white;
  padding: 0.25rem 0.5rem;
  border-radius: 0.375rem;
  font-size: 0.75rem;
  font-weight: 500;
}

.confItem{
  margin: 1.5rem 0;
  padding: 1.5rem;
  border-radius: 1rem;
  border: var(--line-color);
  background-color: var(--card-bg);
  box-shadow: var(--shadow);
  position: relative;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

.confItem .br {
  border-right: var(--line-color);
  padding-right: 1rem;
  margin-right: 1rem;
}

.conf-box-cnt, .conf-share-cnt{
  margin-top: .5rem;
}

.share-cnt{
  display: flex;
  align-items: center;
}

.share-cnt > div{
  margin: 0 .5rem;
}

.share-cnt .share-url{
  padding: 0.5rem 0.75rem;
  border-radius: 0.5rem;
  box-sizing: border-box;
  cursor: pointer;
  font-size: 0.8rem;
  display: flex;
  align-items: center;
  box-shadow: var(--shadow);
  background-color: var(--card-bg);
  border: var(--line-color);
  transition: all 0.2s ease;
}

.share-cnt .share-url:hover{
  background-color: var(--accent-soft);
  transform: translateY(-1px);
  box-shadow: var(--shadow-hover);
}

.share-cnt .share-url .share-ic{
  width: 16px;
  height: 16px;
  fill: var(--accent);
  margin: 0 .2rem 0 0;
}

.note, .meta, .deadline, .calendar{
  color: var(--text-muted);
}

@media only screen and (max-width: 768px) {
  #conf-timer {
    font-size: 4rem;
  }
  .calendar {
    margin-bottom: 0.75rem;
  }
  .filter-label {
    text-align: left;
  }
  .container {
    padding: 0 1rem;
  }
  .page-header {
    margin-top: 2rem;
    margin-bottom: 2rem;
  }
  .confItem .br {
    border-right: none;
    padding-right: 0;
    margin-right: 0;
    padding-bottom: 1rem;
    margin-bottom: 1rem;
    border-bottom: var(--line-color);
  }
}

@media only screen and (max-width: 576px) {
  #conf-timer {
    font-size: 2.25rem;
  }
  .conf-place {
    display: none;
  }
  .conf-date {
    display: none;
  }
  .note {
    display: none;
  }
  .conf-row {
    margin-bottom: 0.5rem;
  }
  .timer {
    display: none;
  }
  .timer-small {
    text-align: right;
    display: grid;
  }
  .conf-title {
    display: none;
  }
  .conf-title-small {
    display: inline;
  }
  .confItem{
    padding: 1rem;
  }
  h1 {
    font-size: 1.75rem;
  }
  .container {
    padding: 0 1rem;
  }
}

@media only screen and (max-width: 375px) {
  #conf-timer {
    font-size: 1.75rem;
  }
  h1 {
    font-size: 1.5rem;
  }
}

.checkbox {
  font-size: 0.875rem;
}

.calendar {
  font-size: 0.875rem;
  margin-top: 0.5rem;
  display: inline-flex;
  align-items: center;
  padding: 0.375rem 0.75rem;
  border-radius: 0.5rem;
  background-color: var(--accent-soft);
  border: 1px solid var(--border-light);
  transition: all 0.2s ease;
  cursor: pointer;
}

.calendar:hover {
  background-color: var(--accent-blue);
  color: white;
  transform: translateY(-1px);
}

.calendar img {
  margin-right: 0.5rem;
  filter: var(--img-filter, none);
}

.ind-cal {
  margin: 0 0.5rem;
}

.calendar img {
  height: 20px;
  width: 20px;
}