@import url('https://fonts.googleapis.com/css2?family=Lato:ital,wght@0,300;0,400;0,700;1,400;1,700&family=Raleway:ital,wght@0,400;0,500;0,700;0,800;1,700;1,800&display=swap');

/* ==========================================================================
   Base Typography
   ========================================================================== */
.reveal {
  font-family: 'Lato', sans-serif;
  color: #000000;
}

.reveal h1, .reveal h2, .reveal h3 {
  font-family: 'Raleway', sans-serif;
  font-weight: 700;
  color: #1A1A1A;
  text-transform: none;
  text-align: left;
  line-height: 1.25;
  font-size: 38px;
  margin: 0 0 14px 0;
  position: relative;
  z-index: 2;
}

.reveal p, .reveal li {
  font-family: 'Lato', sans-serif;
  text-align: left;
  font-size: 21px;
  line-height: 1.42;
  color: #111111;
  position: relative;
  z-index: 2;
}

.reveal ul {
  display: block;
  padding-left: 1.2em;
  margin-top: 10px;
}

.reveal li {
  margin-bottom: 10px;
}

.reveal strong {
  color: #000000;
}

/* ==========================================================================
   Slide Dimensions & Anchoring (Screen AND Print-PDF overrides)
   ========================================================================== */
.reveal .slides section,
html.print-pdf .reveal .slides section,
.print-pdf .reveal .slides section {
  width: 100% !important;
  height: 100% !important;
  top: 0 !important;
  left: 0 !important;
  padding: 55px 75px !important;
  box-sizing: border-box !important;
  text-align: left;
}

/* Title Slide */
.reveal .slides section.title-slide,
html.print-pdf .reveal .slides section.title-slide,
.print-pdf .reveal .slides section.title-slide {
  background-color: #EAEEED !important;
  padding: 125px 75px 45px 75px !important;
}

.reveal .slides section.title-slide::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 95px;
  background-color: #FFFFFF;
  z-index: 0;
}

/* Content Slides */
.reveal .slides section.content-slide,
html.print-pdf .reveal .slides section.content-slide,
.print-pdf .reveal .slides section.content-slide {
  padding-top: 110px !important;
  padding-left: 75px !important;
  padding-right: 75px !important;
  padding-bottom: 45px !important;
  background-color: #FFFFFF !important;
}

.reveal .slides section.content-slide::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 70px;
  background-color: #EAEEED;
  z-index: 0;
}

/* ==========================================================================
   Watermark
   ========================================================================== */
.watermark {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%) rotate(-28deg);
  font-family: 'Lato', sans-serif;
  font-weight: 350;
  font-size: 64px;
  letter-spacing: 0.5px;
  color: rgba(30, 45, 40, 0.065);
  white-space: nowrap;
  pointer-events: none;
  user-select: none;
  z-index: 0;
}

.questions-slide .watermark,
.transition-slide .watermark {
  color: rgba(255, 255, 255, 0.18);
}

/* ==========================================================================
   Accent Lines & Branding
   ========================================================================== */
.accent-line-top {
  display: flex;
  width: 95px;
  height: 5px;
  margin-bottom: 14px;
  position: relative;
  z-index: 2;
}

.accent-line-top .teal {
  background-color: #2E9B85;
  flex: 1;
}

.accent-line-top .orange {
  background-color: #EA5A27;
  flex: 1;
}

.accent-line-bottom {
  width: 110px;
  height: 6px;
  background-color: #FFFFFF;
  margin-top: 80px;
  position: relative;
  z-index: 2;
}

.ccny-logo {
  position: absolute;
  top: 40px;
  right: 50px;
  width: 320px;
  height: auto;
  z-index: 3;
}

/* Title Slide Typography */
.title-content {
  position: relative;
  z-index: 2;
}

.title-slide .course-title {
  font-family: 'Raleway', sans-serif;
  font-size: 38px;
  font-weight: 700;
  color: #1A1A1A;
  margin-bottom: 4px;
  line-height: 1.2;
}

.title-slide .course-subtitle {
  font-family: 'Raleway', sans-serif;
  font-size: 33px;
  font-weight: 700;
  font-style: italic;
  color: #1A1A1A;
  margin-bottom: 38px;
  line-height: 1.2;
}

.title-slide .lecture-topic {
  font-family: 'Raleway', sans-serif;
  font-size: 27px;
  font-weight: 700;
  font-style: italic;
  color: #1A1A1A;
  margin-bottom: 34px;
  line-height: 1.25;
}

.title-slide .presenter-info {
  font-family: 'Lato', sans-serif;
  font-size: 21px;
  font-weight: 400;
  line-height: 1.4;
  color: #4A4A4A;
}

.title-slide .presenter-info a {
  color: #1A73E8;
  text-decoration: underline;
}

.title-footer {
  position: absolute;
  bottom: 25px;
  left: 0;
  width: 100%;
  text-align: center;
  font-family: 'Lato', sans-serif;
  font-size: 20px;
  color: #2B2B2B;
  z-index: 2;
}

/* ==========================================================================
   Agenda Slide (2x2 Grid)
   ========================================================================== */
.agenda-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px 24px;
  margin-top: 14px;
}

.agenda-card {
  background: #FAFAFA;
  border: 1.5px solid #E1E6EA;
  border-radius: 8px;
  border-left-width: 6px;
  padding: 16px 20px;
  display: flex;
  flex-direction: column;
  box-shadow: 0 2px 6px rgba(0,0,0,0.02);
}

.agenda-card.c-teal   { border-left-color: #2E9B85; }
.agenda-card.c-blue   { border-left-color: #2980B9; }
.agenda-card.c-orange { border-left-color: #EA5A27; }
.agenda-card.c-purple { border-left-color: #8E44AD; }

.agenda-tag {
  font-family: 'Raleway', sans-serif;
  font-weight: 700;
  font-size: 13px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 4px;
}
.agenda-card.c-teal   .agenda-tag { color: #2E9B85; }
.agenda-card.c-blue   .agenda-tag { color: #2980B9; }
.agenda-card.c-orange .agenda-tag { color: #EA5A27; }
.agenda-card.c-purple .agenda-tag { color: #8E44AD; }

.agenda-title {
  font-family: 'Raleway', sans-serif;
  font-weight: 700;
  font-size: 21px;
  color: #1A1A1A;
  margin-bottom: 6px;
}

.agenda-desc {
  font-family: 'Lato', sans-serif;
  font-size: 18px;
  line-height: 1.38;
  color: #4A4A4A;
}

/* ==========================================================================
   Two-Column Flex Layout
   ========================================================================== */
.slide-cols {
  display: flex;
  gap: 28px;
  align-items: center;
  margin-top: 8px;
  position: relative;
  z-index: 2;
}

.slide-cols .col-text {
  flex: 1 1 0;
  min-width: 0;
}

.slide-cols .col-media {
  flex: 0 0 460px;
  width: 460px;
  text-align: center;
}

/* ==========================================================================
   Figure Containers & Captions
   ========================================================================== */
.fig-container {
  background: #FAFAFA;
  border: 1.5px solid #E1E6EA;
  border-radius: 8px;
  padding: 10px 14px;
  box-sizing: border-box;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  box-shadow: 0 2px 8px rgba(0,0,0,0.03);
}

.fig-container img {
  max-width: 100%;
  max-height: 380px;
  object-fit: contain;
  display: block;
  border-radius: 4px;
}

/* Full-width Hero Containers for Wide Figures */
.hero-fig-box {
  background: #FAFAFA;
  border: 1.5px solid #E1E6EA;
  border-radius: 8px;
  padding: 12px 18px;
  box-sizing: border-box;
  margin: 10px auto 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  box-shadow: 0 2px 8px rgba(0,0,0,0.03);
}

.hero-fig-box img {
  max-width: 100%;
  max-height: 385px;
  object-fit: contain;
  display: block;
  border-radius: 4px;
}

.fig-credit {
  font-family: 'Lato', sans-serif;
  font-size: 14px;
  color: #7F8C8D;
  margin-top: 8px;
  text-align: center;
}

.diagram-box {
  background: #FAFAFA;
  border: 1.5px solid #E1E6EA;
  border-radius: 8px;
  padding: 12px;
  box-sizing: border-box;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  box-shadow: 0 2px 8px rgba(0,0,0,0.03);
}

.diagram-box svg {
  width: 100%;
  height: auto;
  display: block;
}

/* ==========================================================================
   Slide 3: Comparative Discovery Timelines
   ========================================================================== */
.timeline-wrapper {
  margin-top: 14px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.timeline-row {
  border-radius: 8px;
  padding: 10px 14px;
  border: 1.5px solid #E1E6EA;
}

.timeline-row.manual {
  background: #F9FAFB;
  border-left: 6px solid #7F8C8D;
}

.timeline-row.sdl {
  background: #EAF7F4;
  border-left: 6px solid #2E9B85;
}

.timeline-header {
  display: flex;
  justify-content: space-between;
  font-family: 'Raleway', sans-serif;
  font-weight: 700;
  font-size: 16px;
  margin-bottom: 6px;
}

.timeline-steps {
  display: flex;
  gap: 6px;
  align-items: center;
}

.tl-step {
  flex: 1;
  background: #FFFFFF;
  border: 1px solid #D5DBDB;
  border-radius: 5px;
  padding: 6px;
  font-size: 13px;
  text-align: center;
  font-weight: 600;
  color: #2C3E50;
}

.tl-arr {
  color: #95A5A6;
  font-size: 14px;
  font-weight: bold;
}

/* ==========================================================================
   Slide 13: MCTS 4-Phase Grid
   ========================================================================== */
.mcts-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-top: 12px;
}

.mcts-card {
  border-radius: 8px;
  padding: 14px 18px;
  background: #FAFAFA;
  border: 1.5px solid #E1E6EA;
  border-top-width: 5px;
  display: flex;
  flex-direction: column;
  box-shadow: 0 2px 6px rgba(0,0,0,0.03);
}

.mcts-card.c-blue   { border-top-color: #2980B9; }
.mcts-card.c-green  { border-top-color: #27AE60; }
.mcts-card.c-orange { border-top-color: #E67E22; }
.mcts-card.c-purple { border-top-color: #8E44AD; }

.mcts-card-head {
  font-family: 'Raleway', sans-serif;
  font-weight: 700;
  font-size: 21px;
  color: #2C3E50;
  margin-bottom: 6px;
}

.mcts-card-body {
  font-family: 'Lato', sans-serif;
  font-size: 20px;
  line-height: 1.4;
  color: #222222;
}

/* ==========================================================================
   Interactive Demo Controls (Slide 18)
   ========================================================================== */
.demo-ctrl-bar {
  display: flex;
  align-items: center;
  gap: 15px;
  margin-bottom: 6px;
  position: relative;
  z-index: 3;
}

.demo-btn {
  background-color: #2E9B85;
  color: #FFFFFF;
  border: none;
  padding: 6px 14px;
  font-size: 16px;
  font-family: 'Raleway', sans-serif;
  font-weight: 700;
  border-radius: 4px;
  cursor: pointer;
}

.demo-btn.secondary {
  background-color: #EA5A27;
}

.demo-btn:hover {
  opacity: 0.9;
}

.demo-ctrl-bar label {
  font-size: 17px;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 8px;
}

.demo-status {
  font-size: 16px;
  color: #555555;
  font-weight: 600;
  margin-left: auto;
}

/* Floating Save Button */
#saveBtn {
  position: fixed;
  top: 14px;
  left: 14px;
  z-index: 99999;
  padding: 8px 14px;
  background: #2E9B85;
  color: #FFFFFF;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  font-family: 'Raleway', sans-serif;
  font-size: 14px;
  font-weight: 700;
}

#saveBtn:hover {
  background: #247c6a;
}

/* Questions / Transition Slide */
.questions-slide h2,
.transition-slide h2 {
  font-size: 68px;
  color: #FFFFFF;
  margin-top: 13%;
  margin-bottom: 0;
}

/* ==========================================================================
   Print Adjustments
   ========================================================================== */
@page {
  size: 1280px 720px;
  margin: 0;
}

@media print {
  #saveBtn {
    display: none !important;
  }
  * {
    -webkit-print-color-adjust: exact !important;
    print-color-adjust: exact !important;
  }
  .reveal .controls,
  .reveal .progress,
  .reveal .playback {
    display: none !important;
  }
}

html.print-pdf .reveal .controls,
.print-pdf .reveal .controls,
html.print-pdf #saveBtn,
.print-pdf #saveBtn {
  display: none !important;
}