/* ==========================================================
   LUMI 3D Web Presentation Deck Stylesheet
   Modern, Sleek, Futuristic & Healing Pastel Aesthetic
========================================================== */

:root {
  /* Dark Theme (Default) */
  --bg-primary: #0a0c14;
  --bg-secondary: #121624;
  --bg-glass: rgba(22, 27, 44, 0.72);
  --bg-glass-hover: rgba(30, 37, 60, 0.85);
  --bg-card: rgba(25, 31, 51, 0.65);
  --border-color: rgba(255, 255, 255, 0.08);
  --border-color-hover: rgba(139, 92, 246, 0.4);
  
  --text-main: #f3f4f6;
  --text-muted: #9ca3af;
  --text-sub: #6b7280;
  
  --accent-purple: #8b5cf6;
  --accent-cyan: #06b6d4;
  --accent-pink: #ec4899;
  --accent-amber: #f59e0b;
  --accent-emerald: #10b981;
  
  --grad-primary: linear-gradient(135deg, #8b5cf6 0%, #ec4899 50%, #06b6d4 100%);
  --grad-warm: linear-gradient(135deg, #f59e0b 0%, #ec4899 100%);
  --grad-cyan-blue: linear-gradient(135deg, #06b6d4 0%, #3b82f6 100%);
  --grad-glass: linear-gradient(135deg, rgba(255,255,255,0.06) 0%, rgba(255,255,255,0.01) 100%);
  
  --shadow-card: 0 10px 30px -10px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 35px rgba(139, 92, 246, 0.25);
  
  --header-height: 64px;
  --footer-height: 72px;
  --font-sans: 'Pretendard', -apple-system, BlinkMacSystemFont, system-ui, Roboto, sans-serif;
  --font-display: 'Outfit', 'Pretendard', sans-serif;
}

/* Light Theme */
body.theme-light {
  --bg-primary: #f8fafc;
  --bg-secondary: #f1f5f9;
  --bg-glass: rgba(255, 255, 255, 0.85);
  --bg-glass-hover: rgba(255, 255, 255, 0.95);
  --bg-card: rgba(255, 255, 255, 0.75);
  --border-color: rgba(0, 0, 0, 0.08);
  --border-color-hover: rgba(139, 92, 246, 0.5);
  
  --text-main: #0f172a;
  --text-muted: #475569;
  --text-sub: #94a3b8;
  
  --shadow-card: 0 10px 25px -5px rgba(0, 0, 0, 0.08);
  --shadow-glow: 0 0 25px rgba(139, 92, 246, 0.15);
  --grad-glass: linear-gradient(135deg, rgba(255,255,255,0.9) 0%, rgba(255,255,255,0.6) 100%);
}

/* Reset & Base */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html, body {
  width: 100%;
  min-height: 100%;
  font-family: var(--font-sans);
  background-color: var(--bg-primary);
  color: var(--text-main);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
  transition: background-color 0.3s ease, color 0.3s ease;
}

/* ==========================================================
   TOP HEADER
========================================================== */
.pitch-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  background: var(--bg-glass);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 1.75rem;
  z-index: 1000;
  transition: all 0.25s ease;
}

.header-left {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.brand-badge {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-display);
  font-weight: 800;
  letter-spacing: -0.02em;
}

.brand-sparkle {
  color: #c084fc;
  font-size: 1.15rem;
  animation: pulseRotate 4s infinite linear;
}

.brand-title {
  font-size: 1.15rem;
  font-weight: 900;
  letter-spacing: -0.01em;
  background: var(--grad-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.brand-tag {
  font-size: 0.68rem;
  padding: 0.2rem 0.5rem;
  border-radius: 999px;
  background: rgba(139, 92, 246, 0.15);
  color: #c084fc;
  border: 1px solid rgba(139, 92, 246, 0.3);
  font-weight: 700;
  letter-spacing: 0.05em;
}

.deck-title-hint {
  font-size: 0.85rem;
  color: var(--text-muted);
  border-left: 1px solid var(--border-color);
  padding-left: 1rem;
  display: none;
}

@media (min-width: 900px) {
  .deck-title-hint {
    display: block;
  }
}

.header-center {
  display: flex;
  align-items: center;
}

.slide-indicator {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.95rem;
  background: var(--bg-card);
  padding: 0.3rem 0.85rem;
  border-radius: 999px;
  border: 1px solid var(--border-color);
}

.slide-current {
  color: var(--accent-purple);
  font-size: 1.05rem;
}

.slide-divider {
  color: var(--text-sub);
}

.slide-total {
  color: var(--text-muted);
}

.header-right {
  display: flex;
  align-items: center;
  gap: 0.65rem;
}

.view-toggle-wrap {
  display: flex;
  background: var(--bg-secondary);
  padding: 3px;
  border-radius: 10px;
  border: 1px solid var(--border-color);
}

.view-btn {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.35rem 0.75rem;
  border: none;
  background: transparent;
  color: var(--text-muted);
  font-family: var(--font-sans);
  font-size: 0.8rem;
  font-weight: 600;
  border-radius: 7px;
  cursor: pointer;
  transition: all 0.2s ease;
}

.view-btn.active {
  background: var(--bg-glass-hover);
  color: var(--text-main);
  box-shadow: 0 2px 8px rgba(0,0,0,0.15);
}

.icon-btn {
  width: 36px;
  height: 36px;
  border-radius: 9px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border-color);
  background: var(--bg-secondary);
  color: var(--text-main);
  cursor: pointer;
  transition: all 0.2s ease;
}

.icon-btn:hover {
  background: var(--bg-glass-hover);
  border-color: var(--border-color-hover);
  transform: translateY(-1px);
}

/* ==========================================================
   PROGRESS BAR
========================================================== */
.slide-progress-bar {
  position: fixed;
  top: var(--header-height);
  left: 0;
  width: 100%;
  height: 3px;
  background: rgba(255, 255, 255, 0.05);
  z-index: 999;
}

.progress-fill {
  height: 100%;
  width: 12.5%;
  background: var(--grad-primary);
  box-shadow: 0 0 10px rgba(139, 92, 246, 0.6);
  transition: width 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ==========================================================
   TABLE OF CONTENTS DRAWER
========================================================== */
.toc-drawer {
  position: fixed;
  top: 0;
  right: -340px;
  width: 320px;
  height: 100vh;
  background: var(--bg-secondary);
  border-left: 1px solid var(--border-color);
  z-index: 2000;
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  transition: right 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: -10px 0 30px rgba(0, 0, 0, 0.5);
}

.toc-drawer.open {
  right: 0;
}

.drawer-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.5);
  backdrop-filter: blur(4px);
  z-index: 1999;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}

.drawer-backdrop.open {
  opacity: 1;
  pointer-events: auto;
}

.toc-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.25rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--border-color);
}

.toc-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-main);
}

.toc-close {
  background: none;
  border: none;
  font-size: 1.5rem;
  color: var(--text-muted);
  cursor: pointer;
  line-height: 1;
}

.toc-list {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  overflow-y: auto;
}

.toc-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem 1rem;
  border-radius: 8px;
  background: transparent;
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.88rem;
  font-weight: 500;
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 0.2s ease;
}

.toc-item:hover, .toc-item.active {
  background: var(--bg-glass-hover);
  color: var(--text-main);
  border-color: var(--border-color-hover);
}

.toc-item.active {
  color: var(--accent-purple);
  font-weight: 700;
}

.toc-item-idx {
  font-family: var(--font-display);
  font-size: 0.78rem;
  color: var(--accent-purple);
  font-weight: 800;
}

/* ==========================================================
   PRESENTATION STAGE & SLIDE STRUCTURE
========================================================== */

/* Presentation Mode (Slide Deck) */
body.mode-presentation {
  overflow: hidden;
}

body.mode-presentation .presentation-stage {
  position: relative;
  width: 100vw;
  height: calc(100vh - var(--header-height) - var(--footer-height));
  margin-top: var(--header-height);
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}

body.mode-presentation .slide-card {
  position: absolute;
  inset: 0;
  opacity: 0;
  visibility: hidden;
  transform: scale(0.96) translateY(20px);
  transition: all 0.45s cubic-bezier(0.16, 1, 0.3, 1);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem 3rem;
  overflow-y: auto;
}

body.mode-presentation .slide-card.active {
  opacity: 1;
  visibility: visible;
  transform: scale(1) translateY(0);
  z-index: 10;
}

/* Document Scroll Mode */
body.mode-scroll {
  overflow-y: auto;
}

body.mode-scroll .pitch-header {
  position: sticky;
}

body.mode-scroll .slide-progress-bar {
  position: sticky;
  top: var(--header-height);
}

body.mode-scroll .deck-controls {
  display: none;
}

body.mode-scroll .header-center {
  display: none;
}

body.mode-scroll .presentation-stage {
  max-width: 1200px;
  margin: 2rem auto 5rem auto;
  padding: 0 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 3.5rem;
}

body.mode-scroll .slide-card {
  position: relative;
  opacity: 1;
  visibility: visible;
  transform: none;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 20px;
  padding: 3rem 2.5rem;
  box-shadow: var(--shadow-card);
}

/* Slide Inner Canvas */
.slide-inner {
  width: 100%;
  max-width: 1240px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 1.75rem;
}

/* Slide Header */
.slide-header {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.slide-header.center-align {
  text-align: center;
  align-items: center;
}

.section-tag {
  display: inline-block;
  font-family: var(--font-display);
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  color: var(--accent-purple);
  text-transform: uppercase;
}

.slide-title {
  font-family: var(--font-display);
  font-size: 2.25rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--text-main);
}

.slide-subtitle {
  font-size: 1.05rem;
  color: var(--text-muted);
  max-width: 900px;
}

/* ==========================================================
   SLIDE 01: COVER (표지)
========================================================== */
.cover-layout {
  position: relative;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 2rem 1rem;
}

.cover-glow-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.45;
  pointer-events: none;
  z-index: 0;
}

.orb-1 {
  width: 450px;
  height: 450px;
  background: #8b5cf6;
  top: -100px;
  left: 10%;
  animation: floatOrb 12s infinite ease-in-out alternate;
}

.orb-2 {
  width: 400px;
  height: 400px;
  background: #ec4899;
  bottom: -80px;
  right: 12%;
  animation: floatOrb 14s infinite ease-in-out alternate-reverse;
}

.orb-3 {
  width: 300px;
  height: 300px;
  background: #06b6d4;
  top: 30%;
  right: 35%;
  animation: floatOrb 10s infinite ease-in-out alternate;
}

.cover-content {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.5rem;
  max-width: 960px;
}

.badge-capsule {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.4rem 1rem;
  border-radius: 999px;
  background: rgba(139, 92, 246, 0.12);
  border: 1px solid rgba(139, 92, 246, 0.35);
  color: #c084fc;
  font-family: var(--font-display);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.pulse-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #a855f7;
  box-shadow: 0 0 10px #a855f7;
  animation: pulseDot 2s infinite ease-in-out;
}

.cover-main-title {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  font-family: var(--font-display);
  font-size: 3.5rem;
  font-weight: 900;
  letter-spacing: -0.04em;
  line-height: 1.15;
}

.gradient-text {
  background: var(--grad-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.cover-main-title .sub-h1 {
  font-size: 1.85rem;
  font-weight: 700;
  color: var(--text-main);
  letter-spacing: -0.02em;
}

.cover-description {
  font-size: 1.15rem;
  color: var(--text-muted);
  line-height: 1.7;
  max-width: 780px;
}

.cover-fusion-chips {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.75rem;
  margin-top: 0.5rem;
}

.chip {
  display: flex;
  flex-direction: column;
  align-items: center;
  background: var(--bg-glass);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border-color);
  padding: 0.75rem 1.25rem;
  border-radius: 14px;
  min-width: 140px;
  box-shadow: var(--shadow-card);
  transition: transform 0.2s ease, border-color 0.2s ease;
}

.chip:hover {
  transform: translateY(-3px);
  border-color: var(--border-color-hover);
}

.chip-icon {
  font-size: 1.5rem;
  margin-bottom: 0.2rem;
}

.chip-label {
  font-weight: 700;
  font-size: 0.92rem;
  color: var(--text-main);
}

.chip-sub {
  font-size: 0.74rem;
  color: var(--text-sub);
}

.chip-plus {
  font-size: 1.2rem;
  color: var(--accent-purple);
  font-weight: 800;
}

.cover-meta-info {
  display: flex;
  gap: 2rem;
  padding: 0.75rem 1.5rem;
  background: var(--bg-card);
  border-radius: 12px;
  border: 1px solid var(--border-color);
}

.meta-item {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
}

.meta-label {
  font-size: 0.7rem;
  color: var(--text-sub);
  text-transform: uppercase;
}

.meta-value {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-main);
}

.cover-cta {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
  margin-top: 0.5rem;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  background: var(--grad-primary);
  color: #ffffff;
  border: none;
  padding: 0.85rem 2rem;
  border-radius: 12px;
  font-size: 1rem;
  font-weight: 700;
  cursor: pointer;
  box-shadow: 0 4px 20px rgba(139, 92, 246, 0.4);
  transition: all 0.25s ease;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(139, 92, 246, 0.6);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--bg-glass);
  color: var(--text-main);
  border: 1px solid var(--border-color);
  padding: 0.85rem 1.8rem;
  border-radius: 12px;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
}

.btn-secondary:hover {
  background: var(--bg-glass-hover);
  border-color: var(--border-color-hover);
}

.keyboard-guide-pill {
  font-size: 0.78rem;
  color: var(--text-sub);
}

/* ==========================================================
   SLIDE 02: 01. 개요 (Overview)
========================================================== */
.grid-2col-highlight {
  display: grid;
  grid-template-columns: 1.15fr 1.25fr;
  gap: 1.5rem;
  align-items: stretch;
}

.glass-panel {
  background: var(--bg-card);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border-color);
  border-radius: 18px;
  padding: 2rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.panel-badge {
  display: inline-block;
  align-self: flex-start;
  font-family: var(--font-display);
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  padding: 0.25rem 0.65rem;
  background: rgba(139, 92, 246, 0.15);
  color: #c084fc;
  border-radius: 6px;
  margin-bottom: 1rem;
}

.lead-heading {
  font-size: 1.65rem;
  font-weight: 800;
  line-height: 1.35;
  margin-bottom: 1rem;
  letter-spacing: -0.02em;
}

.lead-desc {
  font-size: 0.98rem;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 1.5rem;
}

.stat-highlight-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--border-color);
}

.stat-box {
  display: flex;
  flex-direction: column;
}

.stat-num {
  font-family: var(--font-display);
  font-size: 1.8rem;
  font-weight: 900;
  background: var(--grad-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.stat-label {
  font-size: 0.78rem;
  color: var(--text-sub);
  margin-top: 0.2rem;
}

.pillar-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
}

.pillar-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  transition: all 0.25s ease;
}

.pillar-card:hover {
  transform: translateY(-3px);
  border-color: var(--border-color-hover);
  box-shadow: var(--shadow-card);
}

.pillar-header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.pillar-icon {
  font-size: 1.75rem;
  width: 44px;
  height: 44px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.05);
}

.pillar-titles h4 {
  font-size: 0.98rem;
  font-weight: 700;
  color: var(--text-main);
}

.pillar-titles span {
  font-size: 0.74rem;
  color: var(--text-sub);
}

.pillar-card p {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.55;
}

.slide-footer-summary {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  background: rgba(139, 92, 246, 0.08);
  border: 1px solid rgba(139, 92, 246, 0.2);
  padding: 0.85rem 1.25rem;
  border-radius: 12px;
  font-size: 0.88rem;
  color: var(--text-main);
}

.summary-pin {
  font-family: var(--font-display);
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.05em;
  background: var(--accent-purple);
  color: #fff;
  padding: 0.2rem 0.5rem;
  border-radius: 6px;
  white-space: nowrap;
}

/* ==========================================================
   SLIDE 03: 02. 핵심가치 (Core Values)
========================================================== */
.values-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
}

.value-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 18px;
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
  position: relative;
  overflow: hidden;
  transition: all 0.25s ease;
}

.value-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-color-hover);
  box-shadow: var(--shadow-card), var(--shadow-glow);
}

.value-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--grad-primary);
  opacity: 0;
  transition: opacity 0.25s ease;
}

.value-card:hover::before {
  opacity: 1;
}

.value-card-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.value-index {
  font-family: var(--font-display);
  font-size: 0.85rem;
  font-weight: 800;
  color: var(--accent-purple);
}

.value-emoji {
  font-size: 1.85rem;
}

.value-name {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text-main);
}

.value-sub {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--accent-cyan);
}

.value-text {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.6;
}

.value-tags {
  display: flex;
  gap: 0.4rem;
  flex-wrap: wrap;
  margin-top: auto;
  padding-top: 0.65rem;
}

.value-tags span {
  font-size: 0.72rem;
  color: var(--text-sub);
  background: rgba(255, 255, 255, 0.04);
  padding: 0.15rem 0.45rem;
  border-radius: 4px;
}

.value-loop-bar {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.85rem;
  flex-wrap: wrap;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  padding: 0.85rem 1.5rem;
  border-radius: 14px;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-muted);
}

.loop-title {
  font-family: var(--font-display);
  font-size: 0.74rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  color: var(--accent-purple);
  margin-right: 0.5rem;
}

.loop-step.highlight {
  color: #c084fc;
  font-weight: 800;
}

/* ==========================================================
   SLIDE 04: 03. 주요콘텐츠 (Main Contents)
========================================================== */
.contents-layout {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.25rem;
}

.content-block-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 18px;
  display: flex;
  overflow: hidden;
  transition: all 0.25s ease;
}

.content-block-card:hover {
  transform: translateY(-3px);
  border-color: var(--border-color-hover);
  box-shadow: var(--shadow-card);
}

.content-card-media {
  width: 140px;
  min-width: 140px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  position: relative;
  background: linear-gradient(135deg, rgba(139, 92, 246, 0.15) 0%, rgba(6, 182, 212, 0.05) 100%);
  border-right: 1px solid var(--border-color);
}

.media-room { background: linear-gradient(135deg, rgba(236, 72, 153, 0.2) 0%, rgba(139, 92, 246, 0.1) 100%); }
.media-town { background: linear-gradient(135deg, rgba(6, 182, 212, 0.2) 0%, rgba(59, 130, 246, 0.1) 100%); }
.media-pet  { background: linear-gradient(135deg, rgba(245, 158, 11, 0.2) 0%, rgba(236, 72, 153, 0.1) 100%); }
.media-social { background: linear-gradient(135deg, rgba(16, 185, 129, 0.2) 0%, rgba(6, 182, 212, 0.1) 100%); }
.media-event { background: linear-gradient(135deg, rgba(139, 92, 246, 0.25) 0%, rgba(236, 72, 153, 0.2) 100%); }

.content-badge {
  position: absolute;
  top: 0.75rem;
  left: 0.75rem;
  font-family: var(--font-display);
  font-size: 0.65rem;
  font-weight: 800;
  letter-spacing: 0.06em;
  padding: 0.15rem 0.45rem;
  border-radius: 4px;
  background: rgba(0, 0, 0, 0.4);
  color: #fff;
}

.content-illu-icon {
  font-size: 2.75rem;
}

.content-card-body {
  padding: 1.25rem 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
  flex: 1;
}

.content-head-row h3 {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text-main);
}

.content-subhead {
  font-size: 0.78rem;
  color: var(--accent-cyan);
  font-weight: 600;
}

.content-feature-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.content-feature-list li {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.5;
  position: relative;
  padding-left: 0.85rem;
}

.content-feature-list li::before {
  content: '•';
  position: absolute;
  left: 0;
  color: var(--accent-purple);
}

.content-feature-list strong {
  color: var(--text-main);
}

/* Full span card (Season Event) */
.full-span-card {
  grid-column: span 2;
}

.season-timeline-preview {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.85rem;
  margin-top: 0.4rem;
}

.season-node {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-color);
  padding: 0.75rem;
  border-radius: 10px;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.s-icon {
  font-size: 1.35rem;
}

.s-title {
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--text-main);
}

.s-desc {
  font-size: 0.72rem;
  color: var(--text-sub);
}

/* ==========================================================
   SLIDE 05: 04. 주요기능 (Key Features)
========================================================== */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.15rem;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: 1.35rem;
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  transition: all 0.25s ease;
}

.feature-card:hover {
  transform: translateY(-3px);
  border-color: var(--border-color-hover);
  box-shadow: var(--shadow-card);
}

.f-icon-box {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
}

.f-1 { background: rgba(139, 92, 246, 0.2); }
.f-2 { background: rgba(6, 182, 212, 0.2); }
.f-3 { background: rgba(245, 158, 11, 0.2); }
.f-4 { background: rgba(236, 72, 153, 0.2); }
.f-5 { background: rgba(16, 185, 129, 0.2); }
.f-6 { background: rgba(99, 102, 241, 0.2); }
.f-7 { background: rgba(234, 88, 12, 0.2); }

.f-content h4 {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 0.4rem;
}

.f-content p {
  font-size: 0.84rem;
  color: var(--text-muted);
  line-height: 1.55;
  margin-bottom: 0.75rem;
}

.f-tech-tags {
  display: flex;
  gap: 0.35rem;
  flex-wrap: wrap;
}

.f-tech-tags span {
  font-size: 0.7rem;
  font-weight: 600;
  padding: 0.2rem 0.5rem;
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-sub);
  border: 1px solid var(--border-color);
}

.full-feat {
  grid-column: span 3;
  flex-direction: row;
  align-items: center;
  gap: 1.5rem;
}

.full-feat .f-icon-box {
  width: 56px;
  height: 56px;
  min-width: 56px;
  font-size: 1.8rem;
}

/* ==========================================================
   SLIDE 06: 05. 차별화 전략 (Differentiation)
========================================================== */
.diff-matrix-table-wrap {
  width: 100%;
  overflow-x: auto;
  border-radius: 16px;
  border: 1px solid var(--border-color);
  background: var(--bg-card);
}

.diff-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.88rem;
}

.diff-table th, .diff-table td {
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--border-color);
}

.diff-table th {
  background: rgba(255, 255, 255, 0.03);
  font-family: var(--font-display);
  font-weight: 700;
  color: var(--text-muted);
  font-size: 0.85rem;
}

.diff-table .row-label {
  font-weight: 700;
  color: var(--text-main);
  white-space: nowrap;
}

.diff-table .col-highlight {
  background: rgba(139, 92, 246, 0.12);
  color: #fff;
  border-left: 1px solid rgba(139, 92, 246, 0.3);
  border-right: 1px solid rgba(139, 92, 246, 0.3);
}

.diff-table tbody tr:last-child td {
  border-bottom: none;
}

.diff-core-banner {
  display: flex;
  align-items: flex-start;
  gap: 1.25rem;
  background: linear-gradient(135deg, rgba(139, 92, 246, 0.15) 0%, rgba(236, 72, 153, 0.1) 100%);
  border: 1px solid rgba(139, 92, 246, 0.35);
  border-radius: 18px;
  padding: 1.5rem 2rem;
}

.core-banner-icon {
  font-size: 2.5rem;
  line-height: 1;
}

.core-banner-text h4 {
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--text-main);
  margin-bottom: 0.5rem;
}

.core-banner-text p {
  font-size: 0.92rem;
  color: var(--text-muted);
  line-height: 1.65;
}

.core-banner-text strong {
  color: #c084fc;
}

/* ==========================================================
   SLIDE 07: 06. 비전 및 로드맵 (Vision & Roadmap)
========================================================== */
.roadmap-timeline {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.25rem;
}

.roadmap-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 18px;
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  position: relative;
  transition: all 0.25s ease;
}

.roadmap-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-color-hover);
  box-shadow: var(--shadow-card);
}

.roadmap-card.highlight-phase {
  border-color: rgba(139, 92, 246, 0.5);
  background: linear-gradient(180deg, rgba(139, 92, 246, 0.12) 0%, var(--bg-card) 100%);
}

.phase-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.phase-badge {
  font-family: var(--font-display);
  font-size: 0.72rem;
  font-weight: 800;
  padding: 0.2rem 0.55rem;
  border-radius: 6px;
  background: var(--accent-purple);
  color: #fff;
}

.phase-period {
  font-size: 0.74rem;
  color: var(--text-sub);
  font-weight: 600;
}

.phase-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-main);
}

.phase-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
  flex: 1;
}

.phase-list li {
  font-size: 0.82rem;
  color: var(--text-muted);
  line-height: 1.5;
  position: relative;
  padding-left: 0.85rem;
}

.phase-list li::before {
  content: '▸';
  position: absolute;
  left: 0;
  color: var(--accent-purple);
}

.phase-goal {
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--accent-cyan);
  padding-top: 0.75rem;
  border-top: 1px solid var(--border-color);
}

.vision-quote-card {
  position: relative;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 18px;
  padding: 1.5rem 2rem 1.5rem 4rem;
}

.quote-symbol {
  position: absolute;
  left: 1.5rem;
  top: 1rem;
  font-family: var(--font-display);
  font-size: 3.5rem;
  line-height: 1;
  color: var(--accent-purple);
  opacity: 0.5;
}

.quote-text {
  font-size: 1.05rem;
  color: var(--text-main);
  line-height: 1.7;
}

.quote-text strong {
  background: var(--grad-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* ==========================================================
   SLIDE 08: SUMMARY & EPILOGUE (발표 마무리)
========================================================== */
.epilogue-layout {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.summary-cards-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.25rem;
}

.sum-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: 1.5rem;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  transition: all 0.25s ease;
}

.sum-card:hover {
  transform: translateY(-3px);
  border-color: var(--border-color-hover);
  box-shadow: var(--shadow-card);
}

.sum-icon {
  font-size: 2rem;
  margin-bottom: 0.25rem;
}

.sum-card h4 {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--text-main);
}

.sum-card p {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.5;
}

.final-callout-box {
  background: linear-gradient(135deg, rgba(139, 92, 246, 0.2) 0%, rgba(236, 72, 153, 0.15) 50%, rgba(6, 182, 212, 0.1) 100%);
  border: 1px solid rgba(139, 92, 246, 0.4);
  border-radius: 20px;
  padding: 2.5rem 2rem;
  text-align: center;
  box-shadow: var(--shadow-card), var(--shadow-glow);
}

.callout-logo {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 900;
  color: #c084fc;
  letter-spacing: 0.05em;
  margin-bottom: 0.75rem;
}

.callout-heading {
  font-size: 1.85rem;
  font-weight: 800;
  color: #ffffff;
  margin-bottom: 0.5rem;
  letter-spacing: -0.02em;
}

.callout-sub {
  font-size: 1rem;
  color: rgba(255, 255, 255, 0.8);
  max-width: 650px;
  margin: 0 auto 1.5rem auto;
}

.callout-actions {
  display: flex;
  justify-content: center;
  gap: 1rem;
  flex-wrap: wrap;
}

/* ==========================================================
   BOTTOM CONTROLS (DECK MODE)
========================================================== */
.deck-controls {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  height: var(--footer-height);
  background: var(--bg-glass);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-top: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 2rem;
  z-index: 1000;
}

.nav-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.6rem 1.25rem;
  border-radius: 10px;
  background: var(--bg-card);
  color: var(--text-main);
  border: 1px solid var(--border-color);
  font-size: 0.9rem;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.2s ease;
}

.nav-btn:hover {
  background: var(--bg-glass-hover);
  border-color: var(--border-color-hover);
  transform: translateY(-1px);
}

.nav-btn:disabled {
  opacity: 0.35;
  cursor: not-allowed;
  transform: none;
}

.nav-next {
  background: var(--grad-primary);
  color: #fff;
  border: none;
  box-shadow: 0 4px 15px rgba(139, 92, 246, 0.35);
}

.nav-next:hover {
  box-shadow: 0 6px 20px rgba(139, 92, 246, 0.5);
}

.slide-dots {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.slide-dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.2);
  border: none;
  cursor: pointer;
  transition: all 0.25s ease;
  padding: 0;
}

.slide-dot:hover {
  background: rgba(255, 255, 255, 0.5);
  transform: scale(1.2);
}

.slide-dot.active {
  width: 24px;
  border-radius: 999px;
  background: var(--accent-purple);
  box-shadow: 0 0 10px var(--accent-purple);
}

/* ==========================================================
   ANIMATIONS & KEYFRAMES
========================================================== */
@keyframes floatOrb {
  0% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(40px, -30px) scale(1.08); }
  100% { transform: translate(-20px, 40px) scale(0.95); }
}

@keyframes pulseRotate {
  0% { transform: rotate(0deg) scale(1); }
  50% { transform: rotate(180deg) scale(1.15); }
  100% { transform: rotate(360deg) scale(1); }
}

@keyframes pulseDot {
  0%, 100% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.4); opacity: 0.5; }
}

/* ==========================================================
   RESPONSIVE DESIGN (MEDIA QUERIES)
========================================================== */
@media (max-width: 1024px) {
  .values-grid,
  .features-grid,
  .roadmap-timeline,
  .summary-cards-row {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .full-feat {
    grid-column: span 2;
  }
  
  .cover-main-title {
    font-size: 2.8rem;
  }
  
  .grid-2col-highlight {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  :root {
    --header-height: 56px;
    --footer-height: 64px;
  }
  
  body.mode-presentation .slide-card {
    padding: 1rem;
    align-items: flex-start;
  }

  .slide-title {
    font-size: 1.75rem;
  }

  .cover-main-title {
    font-size: 2.2rem;
  }

  .cover-main-title .sub-h1 {
    font-size: 1.3rem;
  }

  .contents-layout,
  .values-grid,
  .features-grid,
  .roadmap-timeline,
  .summary-cards-row,
  .season-timeline-preview {
    grid-template-columns: 1fr;
  }

  .full-span-card,
  .full-feat {
    grid-column: span 1;
  }

  .content-block-card {
    flex-direction: column;
  }

  .content-card-media {
    width: 100%;
    min-width: 100%;
    height: 100px;
    border-right: none;
    border-bottom: 1px solid var(--border-color);
  }

  .diff-table th, .diff-table td {
    padding: 0.75rem 0.5rem;
    font-size: 0.78rem;
  }

  .stat-highlight-row {
    grid-template-columns: 1fr;
    gap: 0.5rem;
  }

  .cover-meta-info {
    flex-direction: column;
    gap: 0.5rem;
  }
  
  .deck-controls {
    padding: 0 1rem;
  }
  
  .nav-btn span {
    display: none;
  }
}