/* ===== Reset & Base ===== */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
body {
  background: #0a0a0a;
  color: #f5f5f5;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
  transition: background-color 0.3s ease, color 0.3s ease;
}

/* ===== Light Mode ===== */
body.light {
  background: #ffffff;
  color: #1a1a1a;
}

/* ===== Top Content Area ===== */
.top-content-area {
  width: 100%;
  min-height: 200px;
  padding: 80px 20px 40px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}
@media (min-width: 1024px) {
  .top-content-area {
    min-height: 300px;
    padding: 120px 40px 60px;
  }
}

/* ===== Content Hashtags ===== */
.content-hashtags {
  display: flex;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 20px;
}

.hashtag-item {
  display: inline-block;
  padding: 6px 12px;
  /* background: rgba(255, 255, 255, 0.1); */
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 20px;
  font-size: 16px;
  color: #ffffff;
  font-weight: 500;
  transition: all 0.2s ease;
}

/* .hashtag-item:hover {
  background: rgba(255, 255, 255, 0.15);
  border-color: rgba(255, 255, 255, 0.3);
  transform: translateY(-1px);
} */

/* 라이트 모드 스타일 */
body.light .hashtag-item {
  /* background: rgba(0, 0, 0, 0.05); */
  border-color: rgba(0, 0, 0, 0.1);
  color: #1a1a1a;
  font-weight: 500;
  font-size: 16px;
}

/* body.light .hashtag-item:hover {
  background: rgba(0, 0, 0, 0.08);
  border-color: rgba(0, 0, 0, 0.15);
} */

/* 모바일 반응형 */
@media (max-width: 768px) {
  .content-hashtags {
      gap: 6px;
      margin-bottom: 20px;
  }
  
  .hashtag-item {
      font-size: 12px;
      padding: 5px 10px;
      font-weight: 500;
      font-size: 14px;
  }

  body.light .hashtag-item {
    border-color: rgba(0, 0, 0, 0.1);
    color: #1a1a1a;
    font-weight: 500;
    font-size: 14px;
  }
}

.top-content-title {
  font-size: 24px;
  text-align: center;
  padding-bottom: 24px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  margin-bottom: 24px;
  color: #ffffff;
}
@media (min-width: 1024px) {
  .top-content-title {
    font-size: 46px;
  }
}

/* ===== Content Description ===== */
.content-description {
  width: 100%;
  max-width: 900px;
  margin-top: 40px;
  text-align: left;
}
.content-description img {
  width: 100%;
  max-width: 900px;
  margin: 0 auto 40px auto;
  height: auto;
  display: block;
  cursor: pointer;
  transition: opacity 0.3s ease;
}
.content-description img:hover {
  opacity: 0.9;
}

/* ===== Content Video (유튜브 숏츠) ===== */
.content-video-wrapper {
    width: 100%;
    max-width: 900px;
    margin: 0 auto 40px auto;
    position: relative;
    padding-bottom: 56.25%; 
    height: 0;
    overflow: hidden;
    border-radius: 8px;
  }
  
  .content-video {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border: none;
  }
  
  .content-video-wrapper.shorts {
    max-width: 320px;
    padding-bottom: 177.78%; 
  }

  @media (min-width: 769px) {
    .content-video-wrapper.shorts {
      width: 320px;
      height: 640px; 
      padding-bottom: 0; 
      max-width: 320px;
      max-height: 640px;
    }
  }
  
  @media (max-width: 768px) {
    .content-video-wrapper {
      margin-bottom: 30px;
    }
    
    .content-video-wrapper.shorts {
      max-width: 100%;
      padding-bottom: 177.78%; 
      height: auto;
    }
  }

  /* ===== Video CTA Section (rc-03 전용) ===== */
.video-cta-section {
  text-align: center;
  margin-top: 40px;
  margin-bottom: 40px;
}

.video-cta-text {
  font-size: 26px;
  line-height: 1.5;
  color: #ffffff;
  margin-top: 80px;
  margin-bottom: 24px;
  font-weight: 600;
}

.video-cta-button {
  display: inline-block;
  padding: 14px 32px;
  background: linear-gradient(135deg, #4b8fd7 0%, #76c4fd 100%);
  color: #ffffff;
  text-decoration: none;
  border-radius: 99px;
  font-size: 16px;
  font-weight: 600;
  transition: all 0.3s ease;
  box-shadow: 0 4px 12px rgba(75, 143, 215, 0.3);
}

.video-cta-button:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(75, 143, 215, 0.4);
  background: linear-gradient(135deg, #3a7fc5 0%, #5fb0f0 100%);
}

/* 라이트 모드 스타일 */
body.light .video-cta-text {
  color: #1a1a1a;
}

body.light .video-cta-button {
  background: linear-gradient(135deg, #4b8fd7 0%, #76c4fd 100%);
  color: #ffffff;
}

/* 모바일 반응형 */
@media (max-width: 768px) {
  .video-cta-text {
      font-size: 20px;
  }
  
  .video-cta-button {
      padding: 12px 24px;
      font-size: 14px;
  }
}

.content-reference-description {
    margin-top: 40px;
    padding-top: 24px;
    border-top: 1px solid rgba(255,255,255,0.2);
    font-size: 10px;
    font-weight: 400;
    color: #7f7f7f;
  }

  .content-reference-description a {
    color: #5c6784;
}

  .content-reference ul {
    list-style: disc;
    padding-left: 20px;
  }

  
  body.light .content-reference-description {
    border-top-color: rgba(125, 125, 125, 0.1);
  }

/* ===== Image Modal ===== */
.image-modal {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 10000;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 20px;
}
.image-modal.active {
  display: flex;
}

.image-modal-backdrop {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.85);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.image-modal-content {
  position: relative;
  z-index: 1;
  max-width: 90vw;
  max-height: 90vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

.image-modal-image {
  max-width: 100%;
  max-height: 90vh;
  width: auto;
  height: auto;
  object-fit: contain;
  border-radius: 8px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
}

.image-modal-close {
  position: absolute;
  top: -50px;
  right: 0;
  width: 30px;
  height: 30px;
  border-radius: 50%;
  border: 2px solid #ffffff;
  background: rgba(0, 0, 0, 0.5);
  color: #ffffff;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.3s ease;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}
.image-modal-close svg {
    color: #ffffff;
  }
  .image-modal-close svg path {
    stroke: #ffffff; 
  }
  
  .image-modal-close:hover svg path {
    stroke: #ffffff; 
  }
.image-modal-close:hover {
  border-color: rgba(255, 255, 255, 0.6);
  background: rgba(0, 0, 0, 0.7);
  transform: scale(1.1);
}
.image-modal-close:active {
  transform: scale(0.95);
}

@media (max-width: 768px) {
  .image-modal-close {
    top: -40px;
    width: 36px;
    height: 36px;
  }
  .image-modal-content {
    max-width: 95vw;
    max-height: 85vh;
  }
}
@media (min-width: 1024px) {
  .content-description {
    margin-top: 60px;
    padding: 0 40px;
  }
}

.content-description-title {
  font-size: 24px;
  font-weight: 700;
  color: #f5f5f5;
  margin-top: 60px;
  margin-bottom: 14px;
  letter-spacing: -0.02em;
}

.content-description-title.content-description-title--sub {
    font-size: 22px;
    font-weight: 600;
    margin-top: 40px;
    margin-bottom: 16px;
    opacity: 0.9;
  }
  
@media (min-width: 1024px) {
  .content-description-title {
    font-size: 26px;
    margin-bottom: 18px;
  }
}

@media (min-width: 1024px) {
    .content-description-title.content-description-title--sub {
      font-size: 22px;
      margin-top: 40px;
      margin-bottom: 16px;
    }
  }
  
  /* 라이트 모드 색상도 유지 */
  body.light .content-description-title {
    color: #1a1a1a;
  }

.content-description-text {
  font-size: 16px;
  line-height: 1.8;
  color: #ffffff;
  letter-spacing: -0.01em;
  margin-bottom: 18px;
}

.content-description-text strong {
    color: #ffffff;
}

.content-description-text .line-space-lg {
  display: block;
  color: #ffffff;
  margin-bottom: 10px;/* 아래 여백 */
}

.content-list {
  list-style: decimal;
  margin-left: 1.5rem;
  padding-left: 1rem;

  font-size: 18px;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.7);
  margin-top: -4px;
  margin-bottom: 24px;
}

body.light .content-list {
  color: rgba(0, 0, 0, 0.8);
}

.content-list li {
  margin-bottom: 0.5rem;
  color: #ffffff;
}

body.light .content-list li {
  color: #000000CC;
}

/* 도트형 리스트 (본문 느낌 유지) */
.content-list.content-list--dot {
  list-style: disc;
  margin-left: 1.5rem;
  padding-left: 1rem;
  font-size: 18px;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.7);
  margin-top: -4px;
  margin-bottom: 24px;
}

.content-list.content-list--dot li {
  margin-bottom: 0.5rem;
}

@media (max-width: 768px) {
.content-list {
  font-size: 16px;
}
.content-list.content-list--dot {
  font-size: 16px;
}
}

/* 라이트 모드 색상 */
body.light .content-list.content-list--dot {
  color: rgba(0, 0, 0, 0.8);
}

/* 라이트 버전: 블랙 */
body.light .content-description-text .line-space-lg {
  color: #000000CC;
}

.content-description-text .line-space-lg {
  display: block;
  margin-bottom: 12px;/* 아래 여백 */
}

/* 2번째 버전 */
.content-description-text.content-description-text--sub {
    font-size: 18px;
    line-height: 1.7;
    margin-top: -8px;    
    margin-bottom: 14px; 
  }

@media (max-width: 768px) {
.content-description-text.content-description-text--sub {
    font-size: 16px;
    line-height: 1.7; 
 }
}  

@media (min-width: 1024px) {
  .content-description-text {
    font-size: 18px;
    line-height: 1.7;
  }
}

body.light .content-description-title {
  color: #1a1a1a;
}
body.light .content-description-text {
  color: rgba(0, 0, 0, 0.8);
}

body.light .content-description-text strong {
    color: #1a1a1a;
}

body.light .content-description-text.content-description-text--sub {
    color: rgba(0, 0, 0, 0.7);
  }

body.light .top-content-title {
  border-bottom-color: rgba(0, 0, 0, 0.1);
  color: #1a1a1a;
}

/* ===== Header ===== */
.hero-header {
  display: flex;
  background: #000000;
  flex-direction: column;
  align-items: center;
  padding: 64px 0 16px;
  text-align: center;
}
@media (min-width: 1024px) { .hero-header { padding-top: 96px; } }

.hero-label {
  margin-bottom: 16px;
  font-family: ui-monospace, 'Cascadia Code', 'Source Code Pro', Menlo, monospace;
  font-size: 12px;
  letter-spacing: 0.4em;
  color: #8c8c8c;
}
.hero-title {
  font-size: 50px;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: #f5f5f5;
  text-wrap: balance;
}

.hero-sub {
  margin-top: 12px;
  font-size: 14px;
  letter-spacing: 0.05em;
  color: #8c8c8c;
}

@media (max-width: 768px) {
  .hero-title {
    font-size: 36px;
  }
}

/* ===== Section Header ===== */
.section-header {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 0 32px;
  margin-bottom: 32px;
}
@media (min-width: 1024px) { .section-header { padding: 0 64px; } }
.section-header .line {
  flex: 1;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(140,140,140,0.2), transparent);
}
.section-header .label {
  font-family: ui-monospace, 'Cascadia Code', 'Source Code Pro', Menlo, monospace;
  font-size: 12px;
  letter-spacing: 0.3em;
  color: #8c8c8c;
}

/* ===== Session Card View (main section) ===== */
.session-section {
  position: relative;
  background: #000000;
  width: 100%;
  overflow: hidden;
  padding: 32px 0 60px;
}

/* Scroll container */
.scroll-container {
  position: relative;
  overflow-x: auto;
  overflow-y: hidden;
  cursor: grab;
  user-select: none;
  -webkit-user-select: none;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
  -ms-overflow-style: none;
}
.scroll-container::-webkit-scrollbar { display: none; }
.scroll-container.dragging { cursor: grabbing; }

/* Track */
.scroll-track {
  display: inline-flex;
  align-items: center;
  gap: 16px;
  padding-left: max(2rem, calc(30vw - 210px));
  padding-right: max(2rem, calc(30vw - 210px));
}

/* ===== Session Card ===== */
.session-card {
  position: relative;
  flex-shrink: 0;
  overflow: hidden;
  border-radius: 16px;
  border: none;
  padding: 0;
  text-align: left;
  cursor: pointer;
  outline: none;
  transition: width 0.5s cubic-bezier(0.25, 0.46, 0.45, 0.94),
              height 0.5s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  width: 320px;
  height: 480px;
}
.session-card.active {
  width: 340px;
  height: 480px;
}

/* Card glow */
.card-glow {
  pointer-events: none;
  position: absolute;
  inset: 0;
  border-radius: 16px;
  opacity: 0;
  transition: opacity 0.5s;
}
.session-card.active .card-glow { opacity: 0.15; }

/* Card top edge light */
.card-edge {
  pointer-events: none;
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 1px;
  opacity: 0.15;
  transition: opacity 0.5s;
}
.session-card.active .card-edge { opacity: 0.6; }

/* Card content */
.card-content {
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  height: 100%;
  padding: 28px;
}

/* Card session number */
.card-number {
  display: none;
}

/* Card title */
.card-title {
  font-size: 24px;
  font-weight: 700;
  line-height: 1.3;
  letter-spacing: -0.02em;
  color: rgba(255,255,255,0.7);
  text-wrap: balance;
  transition: all 0.5s;
}
.session-card.active .card-title {
  font-size: 24px;
  color: #ffffff;
}

/* Card subtitle */
.card-subtitle {
  margin-top: 8px;
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.05em;
  color: rgba(255,255,255,0.3);
  transition: color 0.5s;
}

/* Abstract visual */
.card-visual {
  pointer-events: none;
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}
.card-visual-orb {
  border-radius: 50%;
  width: 120px;
  height: 120px;
  filter: blur(30px);
  transform: scale(0.8);
  transition: all 0.7s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}
.session-card.active .card-visual-orb {
  width: 180px;
  height: 180px;
  filter: blur(40px);
  transform: scale(1.2);
}

/* Card image wrapper */
.card-image-wrapper {
  width: 100%;
  margin-top: auto;
  min-height: 120px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  border-radius: 8px;
}
.card-image-wrapper img {
  width: 85%;
  height: auto;
  object-fit: cover;
  border-radius: 8px;
}

/* ID 7 이미지 */
.card-image-wrapper img[src*="rc-bn-03-01.png"] {
  width: 68%;
  object-fit: contain; 
}

/* ID 8 이미지 */
.card-image-wrapper img[src*="rc-bn-04-01.png"] {
    width: 70%;
    object-fit: contain; 
  }

/* Bottom section */
.card-bottom { 
  display: none;
}
.card-divider {
  height: 1px;
  width: 100%;
  margin-bottom: 16px;
  opacity: 0.1;
  transition: opacity 0.5s;
}
.session-card.active .card-divider { opacity: 0.3; }

.card-speaker-row {
  display: flex;
  align-items: center;
  gap: 12px;
}

.card-avatar {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  font-size: 12px;
  font-weight: 700;
  background: rgba(255,255,255,0.06);
  color: rgba(255,255,255,0.4);
  border: 1px solid rgba(255,255,255,0.08);
  transition: all 0.5s;
}

.card-speaker-name {
  font-size: 14px;
  font-weight: 600;
  color: rgba(255,255,255,0.6);
  transition: color 0.5s;
}
.session-card.active .card-speaker-name { color: #ffffff; }

.card-speaker-role {
  font-size: 12px;
  color: rgba(255,255,255,0.25);
  transition: color 0.5s;
}
.session-card.active .card-speaker-role { color: rgba(255,255,255,0.5); }

/* Play button */
.card-play {
  position: absolute;
  bottom: 0;
  right: 0;
  display: flex;
  align-items: center;
  gap: 8px;
  opacity: 0;
  transform: translateY(8px);
  transition: all 0.5s;
}
.session-card.active .card-play {
  opacity: 1;
  transform: translateY(0);
}
.card-play-circle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
}

/* Hover overlay */
.card-hover-overlay {
  pointer-events: none;
  position: absolute;
  inset: 0;
  border-radius: 16px;
  opacity: 0;
  transition: opacity 0.3s;
}
.session-card:hover .card-hover-overlay { opacity: 1; }

/* ===== Progress indicators ===== */
.progress-row {
  display: flex;
  justify-content: center;
  gap: 6px;
  margin-top: 60px;
}
.progress-dot {
  height: 4px;
  border-radius: 9999px;
  border: none;
  padding: 0;
  cursor: pointer;
  transition: all 0.5s;
  background: rgba(255,255,255,0.15);
  width: 6px;
}
.progress-dot.active { width: 24px; }

/* ===== Navigation arrows ===== */
.nav-arrow-container {
  pointer-events: none;
  position: absolute;
  top: 0; bottom: 0;
  z-index: 10;
  display: none;
  align-items: center;
  width: 96px;
}
@media (min-width: 1024px) { .nav-arrow-container { display: flex; } }
.nav-arrow-container.left { left: 0; }
.nav-arrow-container.right { right: 0; justify-content: flex-end; }

.nav-arrow {
    pointer-events: auto;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    border: 1px solid #292929;
    background: rgba(10,10,10,0.8);
    color: #ffffff;  /* #939393 → #ffffff 변경 */
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    cursor: pointer;
    transition: all 0.2s;
  }
  
  /* SVG stroke도 직접 지정 (확실하게) */
  .nav-arrow svg {
    color: #ffffff;
  }
  
  .nav-arrow svg path {
    stroke: #ffffff;
  }
  
  .nav-arrow-container.left .nav-arrow { margin-left: 16px; }
  .nav-arrow-container.right .nav-arrow { margin-right: 16px; }
  .nav-arrow:hover {
    border-color: rgba(140,140,140,0.4);
    background: #1e1e1e;
    color: #ffffff;  /* hover 시에도 흰색 유지 */
  }
  
  .nav-arrow:hover svg path {
    stroke: #ffffff;
  }
  
  .nav-arrow:disabled { opacity: 0.3; cursor: default; }

/* ===== Edge fade ===== */
.edge-fade {
  pointer-events: none;
  position: absolute;
  top: 0; bottom: 0;
  z-index: 5;
  width: 128px;
}
.edge-fade.left {
  left: 0;
  background: linear-gradient(to right, #0a0a0a, transparent);
}
.edge-fade.right {
  right: 0;
  background: linear-gradient(to left, #0a0a0a, transparent);
}

/* ===== Subscription Section ===== */
.subscription-section {
  width: 100%;
  background: #17171b;
}

.subscription-container {
  max-width: 800px;
  padding: 150px 0;
  margin: 0 auto;
  margin-bottom: 10px;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.subscription-header-image {
  width: 40px;
  height: auto;
  margin-bottom: 20px;
  object-fit: contain;
}
@media (min-width: 1024px) {
  .subscription-header-image {
    margin-bottom: 20px;
  }
}

.subscription-title {
  font-size: 20px;
  font-weight: 400;
  letter-spacing: -0.02em;
  color: #ffffff;
}
.subscription-title strong {
  font-weight: 700;
  color: #ffffff;
}

body.light .subscription-title strong {
    color: #1a1a1a;
  }

@media (min-width: 1024px) {
  .subscription-title {
    font-size: 2.25rem;
  }
}

.subscription-bottom-wrapper {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 32px;
  width: 100%;
  padding: 60px 20px;
  background: #17171b;
}
@media (min-width: 1024px) {
  .subscription-bottom-wrapper {
    flex-direction: row;
    justify-content: center;
    gap: 60px;
    padding: 70px;
  }
}

.hashtag-group {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  width: 100%;
  max-width: 600px;
}
@media (min-width: 1024px) {
  .hashtag-group {
    gap: 16px;
    max-width: 380px;
    flex: 1;
  }
}

.hashtag {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 10px 16px;
  font-weight: 500;
  color: #000000;
  background: rgba(123, 123, 123, 0.2);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid rgba(179, 179, 179, 0.3);
  border-radius: 999px;
  transition: all 0.3s;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.hashtag-image {
  width: 20px;
  height: auto;
  object-fit: contain;
  flex-shrink: 0;
}

.hashtag-text {
  white-space: nowrap;
  font-size: 14px;
  font-weight: 700;
}
@media (min-width: 1024px) {
  .hashtag-text {
    font-size: 18px;
  }
}

/* 각 hashtag 텍스트 색상 */
.hashtag:nth-child(1) .hashtag-text { color: #5E83FF; }
.hashtag:nth-child(2) .hashtag-text { color: #FF57BC; }
.hashtag:nth-child(3) .hashtag-text { color: #15AC7C; }
.hashtag:nth-child(4) .hashtag-text { color: #BD60FF; }
.hashtag:nth-child(5) .hashtag-text { color: #FF814F; }
.hashtag:nth-child(6) .hashtag-text { color: #15AC7C; }
.hashtag:nth-child(7) .hashtag-text { color: #FF57BC; }
.hashtag:nth-child(8) .hashtag-text { color: #FF814F; }
.hashtag:nth-child(9) .hashtag-text { color: #BD60FF; }
.hashtag:nth-child(10) .hashtag-text { color: #5E83FF; }

.subscription-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 32px;
  width: 100%;
  margin-bottom: 32px;
}
@media (min-width: 768px) {
  .subscription-content {
    flex-direction: row;
    justify-content: center;
    gap: 48px;
    margin-bottom: 40px;
  }
}

.kakao-channel {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}

.kakao-label {
  font-size: 14px;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.5);
  letter-spacing: 0.05em;
}

.kakao-name {
  font-size: 16px;
  color: #ffffff;
  letter-spacing: -0.02em;
  margin-top: 15px;
}
@media (min-width: 1024px) {
  .kakao-name {
    font-size: 16px;
  }
}

.qr-code-wrapper {
  align-items: center;
}

.qr-code-image {
  width: 160px;
  height: 160px;
  object-fit: contain;
  border-radius: 10px;
  background: #ffffff;
}

/* ===== Bottom info ===== */
.bottom-info {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  padding: 32px 0 64px;
  text-align: center;
}
.bottom-info .hint {
  font-size: 12px;
  color: #8c8c8c;
}
.bottom-info .controls {
  margin-top: 16px;
  display: flex;
  align-items: center;
  gap: 24px;
}
.bottom-info .control-group {
  display: flex;
  align-items: center;
  gap: 8px;
  color: #8c8c8c;
}
.bottom-info .control-group span {
  font-size: 12px;
}
.bottom-info kbd {
  display: inline-block;
  padding: 2px 8px;
  font-family: ui-monospace, 'Cascadia Code', 'Source Code Pro', Menlo, monospace;
  font-size: 12px;
  color: #f5f5f5;
  background: #1e1e1e;
  border: 1px solid #292929;
  border-radius: 4px;
}

/* ===== Theme Toggle Button ===== */
.theme-toggle {
  position: fixed;
  top: 70px;
  right: 24px;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  border: 1px solid #ffffff;
  background: rgba(10, 10, 10, 0.8);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  color: #f5f5f5;
  cursor: pointer;
  transition: all 0.3s ease;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}
.theme-toggle:hover {
  border-color: #ffffff;
  background: rgba(30, 30, 30, 0.9);
  transform: scale(1.05);
}
.theme-toggle:active {
  transform: scale(0.95);
}

body.light .theme-toggle {
  border: 1px solid rgba(0, 0, 0, 0.1);
  background: rgba(255, 255, 255, 0.9);
  color: #1a1a1a;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}
body.light .theme-toggle:hover {
  border-color: rgba(0, 0, 0, 0.2);
  background: rgba(255, 255, 255, 1);
}

.theme-icon {
  position: absolute;
  transition: opacity 0.3s ease, transform 0.3s ease;
}
.sun-icon {
  opacity: 1;
  transform: rotate(0deg);
}
.moon-icon {
    opacity: 0;
    transform: rotate(-90deg);
    color: #ffffff !important;
  }
  
  /* theme-toggle 안의 moon-icon도 명시적으로 흰색 지정 */
  .theme-toggle .moon-icon {
    color: #ffffff !important;
  }
  
  /* SVG stroke도 직접 지정 */
  .theme-toggle .moon-icon path {
    stroke: #ffffff !important;
  }
  
  /* sun-icon도 흰색으로 (다크 모드에서) */
  .theme-toggle .sun-icon {
    color: #ffffff !important;
  }
  
  .theme-toggle .sun-icon circle,
  .theme-toggle .sun-icon path {
    stroke: #ffffff !important;
  }
  
  body.light .sun-icon {
    opacity: 0;
    transform: rotate(90deg);
  }
  body.light .moon-icon {
    opacity: 1;
    transform: rotate(0deg);
  }
  
  /* 라이트 모드에서는 검은색 */
  body.light .theme-toggle .sun-icon,
  body.light .theme-toggle .moon-icon {
    color: #1a1a1a !important;
  }
  
  body.light .theme-toggle .sun-icon circle,
  body.light .theme-toggle .sun-icon path,
  body.light .theme-toggle .moon-icon path {
    stroke: #1a1a1a !important;
  }

/* ===== Light Mode Styles ===== */
body.light .hero-label {
  color: #666666;
}
body.light .hero-title {
  color: #1a1a1a;
}
body.light .hero-sub {
  color: #666666;
}
body.light .section-header .line {
  background: linear-gradient(90deg, transparent, rgba(0, 0, 0, 0.1), transparent);
}
body.light .section-header .label {
  color: #666666;
}
body.light .card-number {
  color: rgba(0, 0, 0, 0.3);
}
body.light .card-title {
    font-size: 24px;
    color: #ffffff;
}
body.light .session-card.active .card-title {
    font-size: 24px;
    color: #ffffff;
}
body.light .card-subtitle {
  color: rgba(0, 0, 0, 0.4);
}
body.light .card-avatar {
  background: rgba(0, 0, 0, 0.05);
  color: rgba(0, 0, 0, 0.4);
  border: 1px solid rgba(0, 0, 0, 0.1);
}
body.light .card-speaker-name {
  color: #ffffff;
}
body.light .session-card.active .card-speaker-name {
  color: #ffffff;
}
body.light .card-speaker-role {
  color: #ffffff;
}
body.light .session-card.active .card-speaker-role {
  color: #ffffff;
}
body.light .card-divider {
  opacity: 0.15;
}
body.light .session-card.active .card-divider {
  opacity: 0.3;
}
body.light .progress-dot:not(.active) {
  background: #cfcfcf !important;
}
body.light .nav-arrow {
    border: 1px solid rgba(0, 0, 0, 0.1);
    background: rgba(255, 255, 255, 0.9);
    color: #1a1a1a;  /* 라이트 모드에서는 검은색 */
  }
  
  body.light .nav-arrow svg path {
    stroke: #1a1a1a;
  }
  
  body.light .nav-arrow:hover {
    border-color: rgba(0, 0, 0, 0.2);
    background: #f5f5f5;
    color: #1a1a1a;
  }
  
  body.light .nav-arrow:hover svg path {
    stroke: #1a1a1a;
  }
body.light .edge-fade.left {
  background: linear-gradient(to right, #ffffff, transparent);
}
body.light .edge-fade.right {
  background: linear-gradient(to left, #ffffff, transparent);
}
body.light .hero-header {
  background: #F5F5F7;
}
body.light .session-section {
  background: #F5F5F7;
}  
body.light .subscription-section {
  background: #ffffff;
}
body.light .subscription-title {
  color: #1a1a1a;
}
body.light .subscription-bottom-wrapper {
  background: transparent;
}
body.light .kakao-name {
  color: #1a1a1a;
}
body.light .bottom-info .hint {
  color: #666666;
}
body.light .bottom-info kbd {
  color: #1a1a1a;
  background: #f5f5f5;
  border: 1px solid rgba(0, 0, 0, 0.1);
}
body.light .hashtag {
  background: #ffffff;
  box-shadow: none;
}