@import url('https://fonts.googleapis.com/css2?family=Nanum+Square+Round:wght@400;700;800&family=Noto+Sans+KR:wght@300;400;500;700;900&display=swap');

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

body {
  font-family: 'Noto Sans KR', sans-serif;
  background: #2a2520;
  overflow: hidden;
  height: 100vh;
  width: 100vw;
}

.slide-container {
  width: 100vw;
  height: 100vh;
  position: relative;
  overflow: hidden;
}

.slide {
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 60px 80px;
  opacity: 0;
  transform: scale(0.95);
  transition: opacity 0.6s ease, transform 0.6s ease;
  pointer-events: none;
  background: #fdf6e3;
  background-image:
    radial-gradient(ellipse at 20% 80%, rgba(255,200,150,0.15) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 20%, rgba(200,230,200,0.12) 0%, transparent 50%),
    url("data:image/svg+xml,%3Csvg width='100' height='100' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence baseFrequency='0.65' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100' height='100' filter='url(%23n)' opacity='0.03'/%3E%3C/svg%3E");
}

.slide.active {
  opacity: 1;
  transform: scale(1);
  pointer-events: auto;
}

/* Paper texture overlay */
.slide::before {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 100%;
  background:
    repeating-linear-gradient(0deg, transparent, transparent 28px, rgba(180,160,140,0.06) 28px, rgba(180,160,140,0.06) 29px);
  pointer-events: none;
  z-index: 0;
}

.slide > * { position: relative; z-index: 1; }

/* Doodle border */
.slide::after {
  content: '';
  position: absolute;
  top: 18px; left: 18px;
  right: 18px; bottom: 18px;
  border: 3px solid rgba(120,100,80,0.2);
  border-radius: 12px 8px 14px 6px;
  pointer-events: none;
  z-index: 0;
}

/* ===== Typography ===== */
.slide-title {
  font-family: 'Nanum Square Round', sans-serif; font-weight: 800;
  font-size: 2.6rem;
  color: #5a4a3a;
  text-align: center;
  margin-bottom: 12px;
  position: relative;
  line-height: 1.4;
}

.slide-title .highlight {
  color: #e07850;
  position: relative;
}

.slide-title .highlight::after {
  content: '';
  position: absolute;
  bottom: -2px; left: -4px; right: -4px;
  height: 12px;
  background: rgba(255,200,100,0.35);
  border-radius: 4px;
  z-index: -1;
  transform: rotate(-0.8deg);
}

.slide-subtitle {
  font-family: 'Noto Sans KR', sans-serif; font-weight: 300;
  font-size: 1.25rem;
  color: #8a7a6a;
  text-align: center;
  margin-bottom: 36px;
  letter-spacing: 0.5px;
}

.section-label {
  font-family: 'Nanum Square Round', sans-serif; font-weight: 800;
  font-size: 1.4rem;
  color: #d4764e;
  margin-bottom: 18px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.section-label .doodle-icon { font-size: 1.6rem; }

/* ===== Content cards (colored pencil style) ===== */
.card-row {
  display: flex;
  gap: 24px;
  width: 100%;
  max-width: 1100px;
  flex-wrap: wrap;
  justify-content: center;
}

.card {
  flex: 1;
  min-width: 200px;
  max-width: 340px;
  padding: 24px 22px;
  border-radius: 14px 10px 16px 8px;
  position: relative;
  transition: transform 0.3s ease;
}

.card:hover { transform: none; }

.card.pink { background: linear-gradient(135deg, #fce4ec 0%, #f8d0d8 100%); border: 2.5px solid rgba(200,100,120,0.3); box-shadow: 3px 3px 0 rgba(200,100,120,0.12); }
.card.green { background: linear-gradient(135deg, #e8f5e9 0%, #d4ecd6 100%); border: 2.5px solid rgba(80,160,100,0.3); box-shadow: 3px 3px 0 rgba(80,160,100,0.12); }
.card.blue { background: linear-gradient(135deg, #e3f2fd 0%, #cfe6f8 100%); border: 2.5px solid rgba(80,130,200,0.3); box-shadow: 3px 3px 0 rgba(80,130,200,0.12); }
.card.yellow { background: linear-gradient(135deg, #fff9e6 0%, #fef0c7 100%); border: 2.5px solid rgba(200,170,60,0.3); box-shadow: 3px 3px 0 rgba(200,170,60,0.12); }
.card.purple { background: linear-gradient(135deg, #f3e5f5 0%, #e8d5f0 100%); border: 2.5px solid rgba(150,100,180,0.3); box-shadow: 3px 3px 0 rgba(150,100,180,0.12); }
.card.orange { background: linear-gradient(135deg, #fff3e0 0%, #ffe8cc 100%); border: 2.5px solid rgba(200,140,60,0.3); box-shadow: 3px 3px 0 rgba(200,140,60,0.12); }

.card-title {
  font-family: 'Nanum Square Round', sans-serif; font-weight: 800;
  font-size: 1.2rem;
  color: #5a4a3a;
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.card-body {
  font-family: 'Noto Sans KR', sans-serif;
  font-weight: 400;
  font-size: 0.95rem;
  color: #6a5a4a;
  line-height: 1.75;
}

.card-body li {
  list-style: none;
  padding-left: 20px;
  position: relative;
  margin-bottom: 4px;
}

.card-body li::before {
  content: '~';
  position: absolute;
  left: 0;
  color: #d4764e;
  font-weight: bold;
  font-size: 1.2rem;
}

/* ===== Decorative elements ===== */
.sparkle {
  position: absolute;
  font-size: 1.4rem;
  opacity: 0.5;
  animation: twinkle 2s ease-in-out infinite;
  pointer-events: none;
  z-index: 2;
}

@keyframes twinkle {
  0%, 100% { opacity: 0.3; transform: scale(0.8) rotate(0deg); }
  50% { opacity: 0.7; transform: scale(1.1) rotate(15deg); }
}

.doodle-arrow {
  position: absolute;
  font-size: 2rem;
  color: rgba(200,140,80,0.3);
  pointer-events: none;
  z-index: 2;
}

/* ===== Comparison table (marker style) ===== */
.compare-table {
  width: 100%;
  max-width: 1000px;
  border-collapse: separate;
  border-spacing: 4px;
  font-family: 'Noto Sans KR', sans-serif;
  font-size: 0.95rem;
}

.compare-table th {
  font-family: 'Nanum Square Round', sans-serif; font-weight: 700;
  font-size: 1.05rem;
  padding: 12px 16px;
  background: rgba(224,120,80,0.15);
  border-radius: 8px 6px 10px 4px;
  color: #5a4a3a;
  text-align: left;
  border-bottom: 2.5px solid rgba(200,140,80,0.3);
}

.compare-table td {
  padding: 10px 16px;
  background: rgba(255,255,255,0.5);
  border-radius: 6px;
  color: #6a5a4a;
  vertical-align: top;
}

.compare-table tr:nth-child(even) td { background: rgba(240,230,210,0.4); }

.marker-text { display: inline; padding: 2px 6px; border-radius: 3px; font-weight: 700; }
.marker-text.red { background: rgba(255,120,100,0.2); color: #c44; }
.marker-text.blue { background: rgba(100,150,255,0.2); color: #448; }
.marker-text.green { background: rgba(100,200,120,0.2); color: #484; }
.marker-text.orange { background: rgba(255,180,80,0.2); color: #a64; }

/* ===== Timeline (hand-drawn) ===== */
.timeline {
  display: flex;
  align-items: flex-start;
  gap: 0;
  width: 100%;
  max-width: 1050px;
  position: relative;
  margin-top: 10px;
}

.timeline::before {
  content: '';
  position: absolute;
  top: 34px; left: 40px; right: 40px;
  height: 3px;
  background: repeating-linear-gradient(90deg, #d4a574 0px, #d4a574 8px, transparent 8px, transparent 14px);
  z-index: 0;
}

.timeline-item {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  position: relative;
  z-index: 1;
}

.timeline-dot {
  width: 26px; height: 26px;
  border-radius: 50%;
  border: 3px solid;
  background: #fdf6e3;
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
}

.timeline-item:nth-child(1) .timeline-dot { border-color: #e07850; }
.timeline-item:nth-child(2) .timeline-dot { border-color: #5a9e6f; }
.timeline-item:nth-child(3) .timeline-dot { border-color: #5a8ec4; }

.timeline-label {
  font-family: 'Nanum Square Round', sans-serif; font-weight: 800;
  font-size: 1.1rem;
  color: #5a4a3a;
  margin-bottom: 6px;
}

.timeline-desc {
  font-family: 'Noto Sans KR', sans-serif;
  font-size: 1rem;
  color: #8a7a6a;
  max-width: 200px;
  line-height: 1.4;
}

/* ===== Tag badges ===== */
.tag {
  display: inline-block;
  padding: 4px 14px;
  border-radius: 20px;
  font-family: 'Noto Sans KR', sans-serif; font-weight: 500;
  font-size: 0.9rem;
  margin: 3px 4px;
  border: 2px dashed;
}
.tag.a { background: rgba(255,200,200,0.3); border-color: rgba(200,100,100,0.3); color: #a44; }
.tag.b { background: rgba(200,230,255,0.3); border-color: rgba(80,130,200,0.3); color: #448; }
.tag.c { background: rgba(200,255,200,0.3); border-color: rgba(80,160,100,0.3); color: #484; }

/* ===== Big number ===== */
.big-number {
  font-family: 'Nanum Square Round', sans-serif; font-weight: 800;
  font-size: 4rem;
  color: #e07850;
  line-height: 1;
  opacity: 0.25;
  position: absolute;
  right: 60px;
  top: 40px;
  z-index: 0;
}

/* ===== Flow diagram ===== */
.flow-row {
  display: flex;
  align-items: center;
  gap: 12px;
  width: 100%;
  max-width: 1050px;
  justify-content: center;
  flex-wrap: wrap;
  margin: 8px 0;
}

.flow-box {
  padding: 14px 22px;
  border-radius: 12px 8px 14px 6px;
  font-family: 'Noto Sans KR', sans-serif;
  font-size: 0.95rem;
  color: #5a4a3a;
  text-align: center;
  min-width: 140px;
  border: 2.5px solid;
  position: relative;
}

.flow-box.step1 { background: #fce4ec; border-color: rgba(200,100,120,0.35); }
.flow-box.step2 { background: #fff9e6; border-color: rgba(200,170,60,0.35); }
.flow-box.step3 { background: #e8f5e9; border-color: rgba(80,160,100,0.35); }
.flow-box.step4 { background: #e3f2fd; border-color: rgba(80,130,200,0.35); }
.flow-box.step5 { background: #f3e5f5; border-color: rgba(150,100,180,0.35); }

.flow-arrow {
  font-size: 1.5rem;
  color: #d4a574;
  font-family: 'Noto Sans KR', sans-serif;
}

/* ===== Navigation ===== */
.nav {
  position: fixed;
  bottom: 28px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 12px;
  align-items: center;
  z-index: 100;
  background: rgba(253,246,227,0.92);
  padding: 10px 24px;
  border-radius: 30px;
  border: 2px solid rgba(200,180,150,0.35);
  box-shadow: 0 4px 20px rgba(0,0,0,0.08);
  backdrop-filter: blur(8px);
}

.nav-btn {
  width: 42px; height: 42px;
  border-radius: 50%;
  border: 2.5px solid rgba(200,140,80,0.4);
  background: rgba(255,255,255,0.6);
  font-family: 'Noto Sans KR', sans-serif;
  font-size: 1.3rem;
  color: #8a6a4a;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s;
}

.nav-btn:hover {
  background: rgba(224,120,80,0.15);
  border-color: rgba(200,140,80,0.6);
  transform: scale(1.08);
}

.nav-dots {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  max-width: 500px;
  justify-content: center;
}

.nav-dot {
  width: 12px; height: 12px;
  border-radius: 50%;
  border: 2px solid rgba(200,140,80,0.3);
  background: transparent;
  cursor: pointer;
  transition: all 0.3s;
}

.nav-dot.active {
  background: #e07850;
  border-color: #e07850;
  transform: scale(1.2);
}

.nav-dot:hover { border-color: #e07850; }

.page-num {
  font-family: 'Noto Sans KR', sans-serif; font-weight: 300;
  font-size: 1rem;
  color: #a08a6a;
  min-width: 50px;
  text-align: center;
}

/* ===== OSS link (colored pencil underline on hover) ===== */
.oss-link {
  color: inherit;
  text-decoration: none;
  position: relative;
  cursor: pointer;
  transition: color 0.3s ease;
}

.oss-link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: -2px; right: -2px;
  height: 6px;
  background: rgba(224,120,80,0.3);
  border-radius: 4px;
  transform: scaleX(0) rotate(-0.5deg);
  transform-origin: left center;
  transition: transform 0.4s cubic-bezier(0.22,0.61,0.36,1);
  z-index: -1;
}

.oss-link:hover { color: #d4764e; }
.oss-link:hover::after { transform: scaleX(1) rotate(-0.5deg); }

/* ===== Handwritten underline ===== */
.hand-underline { position: relative; display: inline-block; }
.hand-underline::after {
  content: '';
  position: absolute;
  bottom: -3px;
  left: -2px; right: -2px;
  height: 8px;
  background: rgba(224,120,80,0.2);
  border-radius: 4px;
  transform: rotate(-0.5deg);
  z-index: -1;
}

/* ===== Stats row ===== */
.stats-row { display: flex; gap: 30px; margin: 16px 0; justify-content: center; }
.stat-item { text-align: center; }
.stat-value { font-family: 'Nanum Square Round', sans-serif; font-weight: 800; font-size: 2.2rem; color: #e07850; line-height: 1; }
.stat-label { font-family: 'Noto Sans KR', sans-serif; font-weight: 400; font-size: 0.9rem; color: #8a7a6a; margin-top: 4px; }

/* ===== Checklist ===== */
.checklist { list-style: none; padding: 0; font-family: 'Noto Sans KR', sans-serif; font-weight: 400; font-size: 0.95rem; color: #6a5a4a; }
.checklist li { padding: 6px 0 6px 32px; position: relative; }
.checklist li::before { content: '[ ]'; position: absolute; left: 0; font-family: 'Noto Sans KR', sans-serif; font-weight: 700; color: #d4764e; }

/* ===== Code block ===== */
.code-block {
  background: rgba(90,74,58,0.08);
  border: 2px solid rgba(90,74,58,0.15);
  border-radius: 10px;
  padding: 16px 20px;
  font-family: 'Courier New', monospace;
  font-size: 0.85rem;
  color: #5a4a3a;
  line-height: 1.7;
  max-width: 1000px;
  width: 100%;
  white-space: pre-wrap;
  word-break: break-all;
  overflow-x: auto;
}

/* ===== Slide action buttons ===== */
.slide-actions {
  position: absolute;
  bottom: 32px;
  right: 32px;
  display: flex;
  gap: 8px;
  align-items: center;
  z-index: 10;
}

.slide-action-btn {
  width: 44px; height: 44px;
  border-radius: 50%;
  border: 2.5px solid rgba(200,140,80,0.4);
  background: rgba(255,255,255,0.7);
  font-size: 1.3rem;
  color: #8a6a4a;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s;
  backdrop-filter: blur(4px);
}
.slide-action-btn:hover {
  background: rgba(224,120,80,0.15);
  border-color: rgba(200,140,80,0.6);
  transform: scale(1.1);
}
.slide-action-btn.playing {
  background: rgba(224,120,80,0.2);
  border-color: #e07850;
  color: #e07850;
}

/* ===== Script bubble ===== */
.script-bubble {
  position: absolute;
  bottom: 84px;
  right: 32px;
  width: 320px;
  max-height: 260px;
  background: rgba(253,246,227,0.97);
  border: 2.5px solid rgba(200,180,150,0.4);
  border-radius: 14px;
  box-shadow: 0 4px 20px rgba(0,0,0,0.1);
  backdrop-filter: blur(8px);
  padding: 14px 16px;
  z-index: 20;
  display: none;
  flex-direction: column;
}
.script-bubble.open { display: flex; }
.script-bubble::after {
  content: '';
  position: absolute;
  bottom: -10px;
  right: 18px;
  width: 0; height: 0;
  border-left: 10px solid transparent;
  border-right: 10px solid transparent;
  border-top: 10px solid rgba(200,180,150,0.4);
}
.script-bubble::before {
  content: '';
  position: absolute;
  bottom: -7px;
  right: 19px;
  width: 0; height: 0;
  border-left: 9px solid transparent;
  border-right: 9px solid transparent;
  border-top: 9px solid rgba(253,246,227,0.97);
  z-index: 1;
}

.script-bubble-title {
  font-family: 'Nanum Square Round', sans-serif;
  font-weight: 800;
  font-size: 0.9rem;
  color: #5a4a3a;
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 6px;
  flex-shrink: 0;
}

.script-bubble-body {
  font-family: 'Noto Sans KR', sans-serif;
  font-weight: 400;
  font-size: 0.82rem;
  color: #6a5a4a;
  line-height: 1.75;
  overflow-y: auto;
  white-space: pre-line;
  flex: 1;
  min-height: 0;
}
.script-bubble-body::-webkit-scrollbar { width: 4px; }
.script-bubble-body::-webkit-scrollbar-thumb { background: rgba(200,180,150,0.4); border-radius: 2px; }

/* ===== Table scroll wrapper ===== */
.table-scroll-wrapper {
  width: 100%;
  max-width: 1000px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}
.table-scroll-wrapper > .compare-table {
  max-width: none;
}

/* ================================================================
   Responsive — 900px (태블릿 가로)
   ================================================================ */
@media (max-width: 900px) {
  /* transform 제거 → position:fixed 자식이 뷰포트 기준으로 동작 */
  .slide, .slide.active {
    transform: none;
    transition: opacity 0.6s ease;
  }

  /* ::after 테두리를 .slide 자체로 이동 → 스크롤이 테두리 안에서 동작 */
  .slide::after { display: none; }
  .slide {
    top: 12px; left: 12px;
    width: calc(100% - 24px);
    height: calc(100% - 24px);
    border: 3px solid rgba(120,100,80,0.2);
    border-radius: 12px 8px 14px 6px;
    padding: 28px 24px 68px;
    justify-content: flex-start;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
  }
  .slide::-webkit-scrollbar { display: none; }

  .slide-title { font-size: 2.2rem; }
  .card-row { flex-direction: column; align-items: center; }
  .card { max-width: 90%; }
  .timeline {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px 16px;
    max-width: 100%;
  }
  .timeline::before { display: none; }
  .timeline-dot { width: 22px; height: 22px; font-size: 0.7rem; }
  .timeline-label { font-size: 0.95rem; margin-bottom: 4px; }
  .timeline-desc { font-size: 0.85rem; max-width: none; }
  .flow-row { flex-direction: column; }
  .flow-arrow { display: none; }
  .stats-row { flex-wrap: wrap; }
  .big-number { font-size: 3rem; right: 28px; top: 18px; }
  .compare-table { display: block; overflow-x: auto; -webkit-overflow-scrolling: touch; }

  /* 네비: 좌측 하단 (이미 fixed) */
  .nav { left: 16px; transform: none; }

  /* 슬라이드 액션: 뷰포트 우측 하단 고정 */
  .slide-actions { position: fixed; bottom: 24px; right: 24px; z-index: 100; }

  /* 스크립트 버블: 뷰포트 고정 */
  .script-bubble { position: fixed; z-index: 110; }
}

/* ================================================================
   Responsive — 768px (태블릿 세로)
   ================================================================ */
@media (max-width: 768px) {
  .slide { padding: 24px 20px 68px; }
  .slide-title { font-size: 1.9rem; }
  .slide-subtitle { font-size: 1.1rem; margin-bottom: 24px; }
  .section-label { font-size: 1.2rem; }
  .card-title { font-size: 1.1rem; }
  .card { padding: 18px 16px; max-width: 95%; }
  .code-block { font-size: 0.78rem; padding: 12px 14px; }
  .stat-value { font-size: 1.8rem; }

  /* Navigation — 좌측 정렬, 컴팩트 */
  .nav { bottom: 18px; left: 18px; padding: 6px 12px; gap: 6px; }
  .nav-btn { width: 36px; height: 36px; font-size: 1.1rem; }
  .nav-dot { width: 10px; height: 10px; }
  .nav-dots { max-width: 180px; }
  .page-num { font-size: 0.8rem; min-width: 36px; }

  /* 슬라이드 액션 — 뷰포트 우측 하단 고정 */
  .slide-actions { bottom: 18px; right: 18px; }
  .slide-action-btn { width: 38px; height: 38px; font-size: 1.1rem; }

  /* Script bubble — 액션 버튼 위 */
  .script-bubble { width: 260px; max-height: 220px; right: 14px; bottom: 64px; }
}

/* ================================================================
   Responsive — 480px (모바일)
   ================================================================ */
@media (max-width: 480px) {
  .slide {
    top: 6px; left: 6px;
    width: calc(100% - 12px);
    height: calc(100% - 12px);
    border-width: 2px;
    padding: 18px 14px 60px;
  }
  .slide-title { font-size: 1.5rem; margin-bottom: 8px; }
  .slide-subtitle { font-size: 0.95rem; margin-bottom: 16px; }
  .section-label { font-size: 1.05rem; margin-bottom: 12px; }
  .card-title { font-size: 1rem; }
  .card { max-width: 100%; padding: 14px 12px; }
  .card-row { gap: 14px; }
  .card-body { font-size: 0.88rem; }
  .code-block { font-size: 0.72rem; padding: 10px 12px; }

  /* Decorative elements — hide */
  .big-number { display: none; }
  .sparkle, .doodle-arrow { display: none; }

  /* Stats — 2-column grid */
  .stats-row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
  .stat-value { font-size: 1.5rem; }
  .stat-label { font-size: 0.8rem; }

  /* Navigation — 좌측 최소화 */
  .nav { bottom: 16px; left: 14px; padding: 5px 10px; gap: 4px; border-radius: 20px; }
  .nav-btn { width: 32px; height: 32px; font-size: 0.95rem; }
  .nav-dot { width: 8px; height: 8px; }
  .nav-dots { max-width: 120px; gap: 3px; }
  .page-num { font-size: 0.7rem; min-width: 32px; }

  /* 슬라이드 액션 — 뷰포트 우측 하단 고정 */
  .slide-actions { bottom: 16px; right: 14px; }
  .slide-action-btn { width: 34px; height: 34px; font-size: 0.95rem; }

  /* Script bubble — bottom sheet */
  .script-bubble {
    bottom: 56px;
    left: 8px;
    right: 8px;
    width: auto;
    max-height: 40vh;
    border-radius: 14px 14px 0 0;
  }
  .script-bubble::after,
  .script-bubble::before { display: none; }

  /* Flow / Timeline */
  .flow-box { min-width: 100px; padding: 10px 14px; font-size: 0.88rem; }
  .timeline-label { font-size: 0.95rem; }
  .timeline-desc { font-size: 0.85rem; max-width: 150px; }
}