@import url("https://cdn.jsdelivr.net/gh/orioncactus/pretendard@v1.3.9/dist/web/static/pretendard.min.css");

:root {
  --font-family: "Pretendard Variable", Pretendard, -apple-system, BlinkMacSystemFont, "SF Pro Text", "SF Pro Display", "Helvetica Neue", Helvetica, Arial, sans-serif;
  --font-mono: "SF Mono", "SFProMono-Regular", Consolas, "Liberation Mono", Menlo, Courier, monospace;
  
  /* Classic Minimalist Dark Theme */
  --bg-color: #000000;
  --slide-bg: #000000;
  --text-primary: #FFFFFF;
  --text-secondary: #AEAEB2;
  --text-tertiary: #636366;
  --accent-color: #FF453A; /* Premium Warm Red */
  --border-color: #1C1C1E;

  --slide-title-size: 3.8rem;
  --slide-content-size: 1.85rem;
  
  --transition-speed: 0.4s;
  --transition-timing: cubic-bezier(0.25, 1, 0.5, 1);
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body, html {
  font-family: var(--font-family);
  background-color: var(--bg-color);
  color: var(--text-primary);
  height: 100%;
  width: 100%;
  overflow: hidden;
}

#presentation-container {
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
  width: 100vw;
  position: relative;
}

/* 16:9 Slide Viewport */
.slides-viewport {
  width: 100%;
  height: 100%;
  max-width: 1920px;
  max-height: 1080px;
  aspect-ratio: 16 / 9;
  position: relative;
  overflow: hidden;
  background-color: var(--slide-bg);
}

.slide {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  padding: 5.5rem 7rem;
  opacity: 0;
  visibility: hidden;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: opacity var(--transition-speed) var(--transition-timing),
              transform var(--transition-speed) var(--transition-timing),
              visibility var(--transition-speed);
}

.slide.active {
  opacity: 1;
  visibility: visible;
  transform: translateX(0);
}

.slide.slide-next {
  transform: translateX(30px);
}

.slide.slide-prev {
  transform: translateX(-30px);
}

/* Headings & Typographies */
.slide-header {
  margin-bottom: 2.5rem;
}

.slide-number {
  font-family: var(--font-mono);
  font-size: 1.1rem;
  font-weight: 500;
  color: var(--accent-color);
  margin-bottom: 0.6rem;
  display: block;
}

.slide-title {
  font-size: var(--slide-title-size);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.15;
}

.slide-body {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

/* Bullet Points style */
.bullet-list {
  list-style: none;
  font-size: var(--slide-content-size);
  line-height: 1.7;
}

.bullet-list li {
  position: relative;
  padding-left: 2.2rem;
  margin-bottom: 2rem;
  color: var(--text-secondary);
  font-weight: 400;
  letter-spacing: -0.01em;
}

.bullet-list li strong {
  color: var(--text-primary);
  font-weight: 600;
}

.bullet-list li::before {
  content: "";
  position: absolute;
  left: 0.5rem;
  top: 0.75rem;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--accent-color);
}

/* Layout options */
.slide-layout-split {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 4rem;
  align-items: center;
  height: 100%;
}

.slide-layout-center {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  height: 100%;
}

.slide-layout-cover {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  height: 100%;
  padding-bottom: 2rem;
}

.cover-subtitle {
  font-size: 2.2rem;
  color: var(--text-secondary);
  font-weight: 500;
  margin-top: 1rem;
  letter-spacing: -0.015em;
}

.cover-divider {
  width: 80px;
  height: 3px;
  background-color: var(--accent-color);
  margin: 2.2rem 0;
}

.cover-meta {
  font-size: 1.35rem;
  color: var(--text-tertiary);
  font-weight: 500;
  letter-spacing: -0.01em;
}

.slide-layout-graphic {
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  gap: 3rem;
  align-items: center;
  height: 100%;
}

.highlight-text {
  font-size: 2.5rem;
  font-weight: 600;
  line-height: 1.4;
  margin-bottom: 2rem;
  letter-spacing: -0.02em;
}

.subtitle {
  font-size: 2rem;
  color: var(--text-secondary);
  font-weight: 400;
  margin-top: 1rem;
}

/* Slide 1 Cover custom styling */
.slide-title-large {
  font-size: 4.4rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.1;
  background: linear-gradient(135deg, var(--text-primary) 50%, var(--text-secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.slide-meta {
  margin-top: 3.5rem;
  font-size: 1.25rem;
  color: var(--text-secondary);
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.slide-meta-row {
  display: flex;
  gap: 1.5rem;
}

.slide-meta-label {
  color: var(--accent-color);
  font-weight: 600;
  min-width: 60px;
}

.movie-poster-container {
  width: 100%;
  max-width: 340px;
  max-height: 440px;
  aspect-ratio: 5 / 7;
  margin-left: auto;
  align-self: center;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 15px 40px rgba(0,0,0,0.6);
  border: 1px solid var(--border-color);
}

.movie-poster-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

/* SVG Flowchart (Slide 8) */
.flowchart-container {
  width: 100%;
  height: 100%;
  display: flex;
  justify-content: center;
  align-items: center;
}

.flowchart-svg {
  width: 100%;
  height: auto;
  max-height: 420px;
}

.svg-box {
  fill: #1C1C1E;
  stroke: #2C2C2E;
  stroke-width: 1.5px;
  rx: 8px;
  ry: 8px;
}

.svg-box.highlight {
  stroke: var(--accent-color);
  fill: rgba(255, 69, 58, 0.08);
}

.svg-text {
  font-family: var(--font-family);
  font-weight: 600;
  font-size: 14px;
  fill: var(--text-primary);
  text-anchor: middle;
}

.svg-text-sub {
  font-family: var(--font-family);
  font-size: 11px;
  fill: var(--text-secondary);
  text-anchor: middle;
}

.svg-arrow {
  fill: none;
  stroke: var(--text-tertiary);
  stroke-width: 1.5px;
  marker-end: url(#arrowhead);
}

.svg-arrow-highlight {
  stroke: var(--accent-color);
  stroke-width: 1.5px;
  marker-end: url(#arrowhead-highlight);
}

/* Footer slide navigation status */
.slide-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.9rem;
  color: var(--text-tertiary);
  border-top: 1px solid #1C1C1E;
  padding-top: 1.5rem;
  margin-top: 1.5rem;
}

/* Subtle, Elegant Overlay Bottom Control Bar */
.subtle-controls {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  gap: 1.5rem;
  background: rgba(28, 28, 30, 0.2);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.08);
  padding: 0.6rem 1.2rem;
  border-radius: 30px;
  opacity: 0; /* Hidden by default, fades in on hover of container */
  transition: opacity 0.3s ease, background 0.3s ease;
  z-index: 10;
}

#presentation-container:hover .subtle-controls {
  opacity: 1;
}

.control-btn {
  background: transparent;
  border: none;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  border-radius: 50%;
  color: var(--text-primary);
  transition: background 0.2s ease;
}

.control-btn:hover {
  background: rgba(255, 255, 255, 0.1);
}

.control-btn svg {
  width: 20px;
  height: 20px;
  fill: currentColor;
}

.slide-progress {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-secondary);
}

/* Print CSS Styles */
@media print {
  @page {
    size: landscape;
    margin: 0;
  }

  body, html {
    background-color: #FFFFFF !important;
    color: #000000 !important;
    overflow: visible !important;
    height: auto !important;
    width: auto !important;
  }

  #presentation-container {
    display: block !important;
    height: auto !important;
    width: auto !important;
  }

  .subtle-controls {
    display: none !important;
  }

  .slides-viewport {
    max-width: 100% !important;
    max-height: 100% !important;
    width: 100% !important;
    height: auto !important;
    aspect-ratio: auto !important;
    background-color: #FFFFFF !important;
    display: block !important;
  }

  .slide {
    position: relative !important;
    top: auto !important;
    left: auto !important;
    width: 100% !important;
    height: 100vh !important;
    page-break-after: always !important;
    break-after: page !important;
    opacity: 1 !important;
    visibility: visible !important;
    display: flex !important;
    padding: 3rem 4rem !important;
    background-color: #FFFFFF !important;
    border-bottom: 1px solid #E5E5EA !important;
  }

  .slide-title {
    color: #000000 !important;
  }

  .bullet-list li {
    color: #333333 !important;
  }

  .bullet-list li strong {
    color: #000000 !important;
  }

  .bullet-list li::before {
    background-color: #FF453A !important;
  }

  .slide-number {
    color: #FF453A !important;
  }

  .svg-box {
    fill: #F2F2F7 !important;
    stroke: #D1D1D6 !important;
  }

  .svg-box.highlight {
    stroke: #FF453A !important;
    fill: rgba(255, 69, 58, 0.05) !important;
  }

  .svg-text {
    fill: #000000 !important;
  }

  .svg-text-sub {
    fill: #555555 !important;
  }

  .svg-arrow-highlight {
    stroke: #FF453A !important;
  }
}