:root {
  --bg: #ffffff;
  --surface: #f8f8f8;
  --primary: #000000;
  --primary-dark: #1a1a1a;
  --accent: #666666;
  --text: #1a1a1a;
  --muted: #999999;
  --stroke: #e5e5e5;
  --light-gray: #f5f5f5;
}

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

html {
  overflow-x: hidden;
  width: 100%;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Helvetica Neue', Arial, sans-serif;
  line-height: 1.6;
  color: var(--text);
  background: var(--bg);
  padding-bottom: 0;
  overflow-x: hidden;
  width: 100%;
}

/* Navigation */
nav {
  background: #ffffff;
  color: var(--text);
  padding: 1.5rem 0;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  width: 100%;
  z-index: 1000;
  border-bottom: 1px solid var(--stroke);
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.nav-container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 2rem;
  display: flex;
  justify-content: flex-start;
  align-items: center;
  flex-wrap: nowrap;
}

.logo {
  display: flex;
  align-items: center;
  cursor: pointer;
  height: 80px;
  margin-right: 3rem;
  flex-shrink: 0;
  align-self: center;
}

.logo img {
  height: 80px;
  width: auto;
  object-fit: contain;
  display: block;
}

.nav-menu {
  display: flex;
  list-style: none;
  gap: 0;
  flex-wrap: nowrap;
  align-items: center;
  margin-left: auto;
  white-space: nowrap;
}

.nav-menu > li {
  position: relative;
  cursor: pointer;
  padding: 0.4rem 1.1rem;
  color: var(--text);
  font-weight: 700;
  font-size: 1.0rem;
  transition: color 0.3s;
  white-space: nowrap;
  flex-shrink: 0;
}

.nav-menu > li:hover {
  color: var(--muted);
}

.nav-menu > li.active {
  color: var(--primary);
  font-weight: 500;
}

.nav-menu > li.has-dropdown::after {
  content: '▼';
  font-size: 0.6rem;
  margin-left: 0.3rem;
  display: inline-block;
  transition: transform 0.3s;
}

.nav-menu > li.has-dropdown:hover::after {
  transform: translateY(2px);
}

/* Dropdown Menu */
.dropdown {
  position: absolute;
  top: 100%;
  left: 0;
  background: #ffffff;
  min-width: 200px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px);
  transition: all 0.3s ease;
  margin-top: 0.5rem;
  border-radius: 4px;
  overflow: hidden;
  border: 1px solid var(--stroke);
}

.nav-menu > li:hover .dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.dropdown li {
  padding: 0.75rem 1.5rem;
  color: var(--muted);
  cursor: pointer;
  transition: background-color 0.2s, color 0.2s;
  white-space: nowrap;
  font-weight: 700;
}

.dropdown li:hover {
  background-color: var(--light-gray);
  color: var(--text);
}

.dropdown li:first-child {
  padding-top: 1rem;
}

.dropdown li:last-child {
  padding-bottom: 1rem;
}

/* Mobile Menu Toggle */
.menu-toggle {
  display: none;
  flex-direction: column;
  cursor: pointer;
  gap: 5px;
  z-index: 1001;
  position: relative;
}

.menu-toggle span {
  width: 25px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: all 0.3s;
}

/* Main Content */
.container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0;
  padding-top: 7rem; /* 네비게이션 바 높이만큼 상단 여백 추가 */
  min-height: calc(100vh - 200px);
}

.page-section {
  display: none;
  animation: fadeIn 0.5s;
  margin-bottom: 4rem; /* 카드와 footer 사이 여백 */
}

.page-section.active {
  display: block;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Hero Split Layout */
.hero-split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  align-items: center;
  min-height: calc((100vh - 120px) / 4);
  padding: 2rem 0 6rem 0; /* 하단 패딩 더 증가 */
  /* 배경에 하단 그라데이션 추가로 더 부드러운 전환 */
  background: 
    linear-gradient(
      to bottom,
      transparent 0%,
      rgba(255, 255, 255, 0.02) 60%,
      rgba(255, 255, 255, 0.05) 75%,
      rgba(255, 255, 255, 0.1) 85%,
      rgba(255, 255, 255, 0.2) 95%,
      rgba(255, 255, 255, 0.3) 100%
    ),
    linear-gradient(135deg, #2a2a2a 0%, #1a1a1a 100%);
  position: relative;
  overflow: hidden; /* 페이드 효과를 위한 오버플로우 */
}

/* Hero 하단에 부드러운 페이드 효과 - 더 긴 그라데이션 */
.hero-split::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 200px; /* 높이 증가 */
  background: linear-gradient(
    to bottom, 
    transparent 0%, 
    rgba(255, 255, 255, 0.05) 15%,
    rgba(255, 255, 255, 0.15) 30%,
    rgba(255, 255, 255, 0.35) 50%,
    rgba(255, 255, 255, 0.55) 70%,
    rgba(255, 255, 255, 0.75) 85%,
    rgba(255, 255, 255, 0.9) 95%,
    rgba(255, 255, 255, 1) 100%
  );
  pointer-events: none;
  z-index: 1;
}

.hero-content {
  display: flex;
  flex-direction: column;
  justify-content: center;
  max-width: 600px;
  color: #ffffff;
  z-index: 2;
  padding-left: 6rem;
  padding-right: 3rem;
  padding-bottom: 3rem; /* 페이드 효과 위에 버튼이 보이도록 하단 패딩 추가 */
}

.hero-label {
  font-size: 1.275rem;
  color: rgba(255, 255, 255, 0.7);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 0.75rem;
  font-weight: 400;
}

.hero-title {
  font-size: 4.5rem;
  font-weight: 700;
  line-height: 1.1;
  color: #ffffff;
  margin-bottom: 1rem;
  letter-spacing: -0.02em;
}

.hero-subtitle {
  font-size: 1.425rem;
  color: rgba(255, 255, 255, 0.8);
  line-height: 1.5;
  margin-bottom: 1.5rem;
  font-weight: 400;
}

.hero-buttons {
  display: flex;
  gap: 1rem;
  margin-bottom: 0; /* hero-content의 padding-bottom으로 대체 */
}

.hero-images {
  position: relative;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem 6rem 1rem 3rem;
  z-index: 2;
}

.image-wrapper {
  width: 90%;
  max-width: 600px;
  height: auto;
  aspect-ratio: 16 / 9;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.15);
  transition: transform 0.3s ease;
  position: relative;
}

.image-wrapper.image-1 {
  transform: rotate(5deg);
}

.image-wrapper:hover {
  transform: rotate(0deg) scale(1.05);
}

.image-wrapper img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s ease;
}

.image-wrapper:hover img {
  transform: scale(1.1);
}

.scroll-indicator {
  display: none;
}

@keyframes bounce {
  0%, 20%, 50%, 80%, 100% {
    transform: translateY(0);
  }
  40% {
    transform: translateY(-10px);
  }
  60% {
    transform: translateY(-5px);
  }
}

/* Bottom Banner */
.bottom-banner {
  background: #d3d3d3;
  color: #1a1a1a;
  text-align: center;
  padding: 1.5rem 2rem;
  font-weight: 600;
  width: 100%;
  margin-top: 0;
}

/* Home Bento Layout */
.home-layout {
  display: grid;
  grid-template-columns: 4fr 6fr;
  gap: 1rem;
  padding: 1.5rem;
  min-height: calc(100vh - 100px);
}

.home-left {
  display: flex;
}

.hero-card {
  display: flex;
  flex-direction: column;
  justify-content: center;
  background: var(--bg);
  border: 1px solid var(--stroke);
  color: var(--text);
  flex: 1;
  padding: 2.5rem;
}

.hero-card .hero-label {
  color: var(--text-secondary);
  font-size: 1.275rem;
  margin-bottom: 0.5rem;
}

.hero-card .hero-title {
  color: var(--text);
  font-size: 3.3rem;
  line-height: 1.2;
  margin-bottom: 1rem;
}

.hero-card .hero-subtitle {
  color: var(--text-secondary);
  font-size: 1.35rem;
  line-height: 1.5;
  margin-bottom: 1.5rem;
}

.hero-card .hero-buttons {
  margin-top: 1.5rem;
}

.home-right {
  display: grid;
  grid-template-rows: 1fr 1fr;
  gap: 1rem;
}

.home-grid-top {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}

.home-grid-bottom {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}


.home-grid-card {
  background: var(--bg);
  border: 1px solid var(--stroke);
  border-radius: 16px;
  padding: 1.25rem;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  display: flex;
  flex-direction: column;
}

.home-grid-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
}

.home-grid-card h3 {
  font-size: 1.14rem;
  margin-bottom: 0.5rem;
  font-weight: 600;
}

.home-grid-card p {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.4;
}

/* Study Card 스타일 */
.home-grid-card.study-card {
  padding: 0;
  overflow: hidden;
  border: none;
}

.home-grid-card.study-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s ease;
}

.home-grid-card.study-card:hover img {
  transform: scale(1.05);
}

/* News Card 스타일 */
.home-grid-card.news-card {
  background: linear-gradient(135deg, #ede9fe 0%, #ddd6fe 100%);
  border: none;
}

.daily-card {
  padding: 0;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.daily-card-image {
  width: 100%;
  flex: 7;
  overflow: hidden;
}

.daily-card-image img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  object-position: center;
  transition: transform 0.3s ease;
}

.daily-card:hover .daily-card-image img {
  transform: scale(1.1);
}

.daily-card h3 {
  padding: 0.75rem;
  font-size: 1.2rem;
  text-align: center;
  flex: 3;
  display: flex;
  align-items: center;
  justify-content: center;
}

@media (max-width: 1024px) {
  .home-layout {
    grid-template-columns: 1fr;
  }
  
  .home-grid-bottom {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 768px) {
  .home-grid-top {
    grid-template-columns: 1fr;
  }
  
  .home-grid-bottom {
    grid-template-columns: 1fr;
  }
}

/* Home Resources Section (legacy) */
.home-resources {
  padding: 5rem 6rem 2rem 6rem;
  margin-top: -120px;
  position: relative;
  z-index: 2;
  background: #ffffff;
}

.home-resources-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
  margin-top: 2rem;
}

.home-resource-card {
  background: var(--bg);
  border: 1px solid var(--stroke);
  border-radius: 12px;
  overflow: hidden;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  cursor: pointer;
}

.home-resource-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.12);
}

.home-resource-image {
  width: 100%;
  height: 200px;
  overflow: hidden;
  background: var(--surface);
}

.home-resource-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s ease;
}

.home-resource-card:hover .home-resource-image img {
  transform: scale(1.05);
}

.home-resource-card h3 {
  padding: 1.5rem 1.5rem 0.5rem;
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text);
  margin: 0;
}

.home-resource-card p {
  padding: 0 1.5rem 1.5rem;
  color: var(--muted);
  font-size: 0.95rem;
  line-height: 1.6;
  margin: 0;
}

/* Content Cards */
.content-card {
  background: var(--surface);
  padding: 2.5rem;
  border-radius: 18px;
  box-shadow: 0 20px 40px rgba(189, 107, 77, 0.08);
  margin-bottom: 2.5rem;
  border: 1px solid var(--stroke);
}

/* Login Page Styles */
.login-container {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 3rem;
  align-items: start;
  margin-top: 2rem;
}

.login-column {
  display: flex;
  flex-direction: column;
}

.login-column h3 {
  color: var(--text);
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 1rem;
}

.login-divider {
  width: 1px;
  background: var(--stroke);
  height: 100%;
  min-height: 300px;
}

.login-notice {
  padding: 1rem 0;
}

.login-member {
  padding-right: 1rem;
}

.login-admin {
  padding-left: 1rem;
}
.category-card {
  padding: 1.5rem;
}

.category-header {
  flex-direction: column;
  align-items: flex-start;
}

.category-top {
  flex-direction: column;
  align-items: flex-start;
  gap: 0.4rem;
  width: 100%;
}

.example-cards {
  flex-direction: column;
}

.category-board {
  padding: 1.5rem;
}

.category-board-header h2 {
  font-size: 1.8rem;
}

.board-table {
  font-size: 1.2rem;
} 

.board-table th,
.board-table td {
  padding: 0.8rem 0.6rem;
}

.board-table th:first-child {
  width: 60px;
}

.update-pending {
  padding: 3rem 1rem;
}

.category-header-box,
.category-questions-box {
  padding: 1.5rem;
}

.table-container {
  max-height: calc(100vh - 400px);
}
.content-card h2 {
  color: var(--text);
  margin-bottom: 0.8rem;
  font-size: 2.2rem;
  font-weight: 700;
}

.content-card h3 {
  color: var(--primary-dark);
  margin-top: 1.5rem;
  margin-bottom: 0.5rem;
  font-weight: 600;
}

.content-card p {
  margin-bottom: 1rem;
  line-height: 1.8;
}

.content-card ul {
  margin-left: 1.5rem;
  margin-bottom: 1rem;
  list-style: none;
}

.content-card li {
  margin-bottom: 0.6rem;
  position: relative;
  padding-left: 1.4rem;
}

.content-card li::before {
  content: '•';
  position: absolute;
  left: 0;
  color: var(--primary);
  font-size: 1.2rem;
  line-height: 1;
}

/* What We Pursue Grid */
.pursue-grid {
  display: grid;
  grid-template-columns: 1fr auto 1fr auto 1fr;
  gap: 2rem;
  margin-top: 2rem;
  align-items: start;
}

.pursue-column {
  display: flex;
  flex-direction: column;
}

.pursue-column h4 {
  color: var(--text);
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 0.8rem;
}

.pursue-column p {
  margin-bottom: 0.8rem;
  line-height: 1.8;
}

.pursue-divider {
  width: 1px;
  background: var(--stroke);
  height: 100%;
  min-height: 200px;
}
/* Discover Intro */
.discover-intro {
  text-align: center;
  margin-bottom: 3rem;
}

.discover-intro p {
  max-width: 620px;
  margin: 0 auto;
  color: var(--muted);
}

/* Discover Grid */
.discover-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

/* Category Card */
.category-card {
  background: #fff;
  border-radius: 18px;
  padding: 2rem;
  border: 1px solid var(--stroke);
  box-shadow: 0 16px 30px rgba(0, 0, 0, 0.08);
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.category-header {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.category-top {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.category-label {
  font-size: 0.85rem;
  letter-spacing: 0.08em;
  color: var(--muted);
  text-transform: uppercase;
}

.category-header h3 {
  margin: 0.2rem 0 0;
  font-size: 1.4rem;
  color: var(--text);
}

.category-description {
  color: var(--muted);
  font-size: 0.95rem;
}

.voice-room-image {
  width: 100%;
  margin-top: 1rem;
  border-radius: 12px;
  overflow: hidden;
  aspect-ratio: 16 / 9;
}

.voice-room-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* 보이스룸 질문 카드 그리드 */
.voice-room-cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.5rem;
  margin-top: 0;
  padding: 0;
}

.voice-room-question-card {
  background: var(--surface);
  border: 1px solid var(--stroke);
  border-radius: 12px;
  padding: 1.5rem;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  gap: 0;
}

.voice-room-question-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(189, 107, 77, 0.15);
}

.question-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.6rem 1.2rem;
  background: var(--primary);
  border: 1px solid var(--primary);
  border-radius: 8px;
  font-weight: 500;
  font-size: 0.9rem;
  color: #ffffff;
  flex-shrink: 0;
  white-space: nowrap;
  margin-bottom: 0.5rem;
}

.voice-room-question-card .question-text {
  color: var(--text);
  font-size: 1.44rem;
  font-weight: 700;
  line-height: 1.4;
  margin: 0.5rem 0 0 0;
  text-align: center;
}

.view-more {
  background: var(--primary);
  color: #fff;
  border: none;
  border-radius: 999px;
  padding: 0.3rem 1rem;
  font-weight: 600;
  font-size: 0.85rem;
  cursor: pointer;
  transition: all 0.3s;
  min-width: 90px;
  text-align: center;
  flex-shrink: 0;
  box-shadow: 0 6px 16px rgba(0, 0, 0, 0.2);
}

.view-more:hover {
  background: var(--primary-dark);
  color: #fff;
}

/* Example Cards */
.example-cards {
  display: flex;
  gap: 1rem;
  margin-top: 0.5rem;
  flex-wrap: nowrap;
}

.example-card {
  border: none;
  border-radius: 14px;
  overflow: hidden;
  padding: 0;
  cursor: pointer;
  background: #fff;
  box-shadow: 0 12px 24px rgba(0, 0, 0, 0.08);
  text-align: left;
  transition: transform 0.3s, box-shadow 0.3s;
}

.example-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 16px 30px rgba(0, 0, 0, 0.12);
}

.example-card img {
  width: 100%;
  height: 90px;
  object-fit: cover;
  display: block;
}

.example-content {
  padding: 0.9rem 1rem 1.3rem;
}

.example-tag {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--muted);
}

.example-content h4 {
  margin-top: 0.4rem;
  font-size: 1rem;
  color: var(--text);
}

/* Discover Detail Panel */
.discover-detail {
  margin-top: 3rem;
  padding: 2.5rem;
  border-radius: 22px;
  border: 1px solid var(--stroke);
  background: var(--surface);
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.6);
  display: none;
  position: relative;
}

.discover-detail.active {
  display: block;
  animation: fadeIn 0.4s;
}

.detail-tag {
  font-size: 0.85rem;
  letter-spacing: 0.12em;
  color: var(--muted);
  text-transform: uppercase;
}

.detail-title {
  font-size: 2rem;
  margin: 0.5rem 0 1rem;
  color: var(--primary-dark);
}

.detail-body {
  color: var(--text);
  line-height: 1.8;
}

.close-detail {
  position: absolute;
  top: 1.2rem;
  right: 1.2rem;
  border: none;
  background: transparent;
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--muted);
}

/* Category Board Table */
.category-board {
  background: var(--surface);
  padding: 2.5rem;
  border-radius: 18px;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.08);
  margin-bottom: 2.5rem;
  border: 1px solid var(--stroke);
}

.category-board-header {
  margin-bottom: 2rem;
  padding-bottom: 1.5rem;
  border-bottom: 2px solid var(--stroke);
}

.category-board-header .category-label {
  font-size: 0.85rem;
  letter-spacing: 0.08em;
  color: var(--muted);
  text-transform: uppercase;
  margin-bottom: 0.5rem;
}

.category-board-header h2 {
  color: var(--text);
  margin: 0.5rem 0;
  font-size: 2.2rem;
  font-weight: 700;
}

.category-board-header .category-subtitle {
  color: var(--muted);
  font-size: 0.95rem;
  margin-top: 0.5rem;
}

/* Category 01 Header Box */
.category-header-box {
  background: var(--surface);
  padding: 2.5rem;
  border-radius: 18px;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.08);
  margin-bottom: 2.5rem;
  border: 1px solid var(--stroke);
}

.category-header-box .category-board-header {
  margin-bottom: 0;
  padding-bottom: 0;
  border-bottom: none;
}

/* 보이스룸 헤더 박스 (ACTIVE VERBS와 동일한 레이아웃) */
.voice-room-header-box {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.voice-room-top-row {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 2rem;
}

.voice-room-header-box .category-board-header {
  flex: 1;
}

/* 보이스룸 100일 챌린지 헤더 섹션 */
.voice-room-header-section {
  display: grid;
  grid-template-columns: 4fr 6fr;
  gap: 1.5rem;
  margin-bottom: 1.5rem;
  align-items: stretch;
}

.voice-room-header-content {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  align-items: center;
  background: var(--surface);
  padding: 2.5rem;
  border-radius: 18px;
  box-shadow: 0 20px 40px rgba(189, 107, 77, 0.08);
  border: 1px solid var(--stroke);
}

.voice-room-header-text {
  display: flex;
  flex-direction: column;
}

.voice-room-header-text .category-label {
  font-size: 1.35rem; /* 기본 0.9rem * 1.5 */
}

.voice-room-header-text h2 {
  font-size: 2.2rem; /* 보이스룸 페이지와 동일 */
  line-height: 1.3;
  font-weight: 700;
}

.voice-room-header-text p {
  font-size: 1rem; /* 보이스룸 페이지와 동일 */
  line-height: 1.8;
}

.voice-room-header-text .back-button.voice-room-back-btn {
  width: 80%;
  max-width: 80%;
  align-self: flex-start;
  text-align: center;
  justify-content: center;
  font-size: 1.275rem; /* 기본 0.85rem * 1.5 */
}

.voice-room-header-image {
  width: 80%;
  margin-left: auto;
}

.voice-room-header-image img {
  width: 100%;
  border-radius: 12px;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

/* Day 필터 스타일 (보이스룸 100일 챌린지) */
.day-filter {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  width: 100%;
}

.day-filter-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 0.5rem;
}

.day-filter-row:last-child {
  margin-bottom: 0;
}

.back-button.voice-room-back-btn {
  position: static;
  box-shadow: 0 6px 16px rgba(0, 0, 0, 0.2);
  background: var(--primary);
  color: #fff !important;
  border: 1px solid var(--primary);
  flex-shrink: 0;
  font-size: 0.85rem;
  padding: 0.4rem 1rem;
}

.back-button.voice-room-back-btn:hover {
  background: var(--primary-dark);
  color: #fff !important;
  transform: translateY(-2px);
}

/* Category 01 Questions Box */
.category-questions-box {
  background: var(--surface);
  padding: 2.5rem;
  border-radius: 18px;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.08);
  margin-bottom: 2.5rem;
  border: 1px solid var(--stroke);
}

.table-container {
  max-height: calc(100vh - 500px);
  overflow-y: auto;
  margin-top: 0;
}

.table-container::-webkit-scrollbar {
  width: 8px;
}

.table-container::-webkit-scrollbar-track {
  background: var(--bg);
  border-radius: 4px;
}

.table-container::-webkit-scrollbar-thumb {
  background: var(--primary);
  border-radius: 4px;
}

.table-container::-webkit-scrollbar-thumb:hover {
  background: var(--primary-dark);
}

/* Board Table */
.board-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 1.5rem;
}

.board-table thead {
  background: linear-gradient(135deg, rgba(255, 232, 213, 0.5), var(--surface));
  border-radius: 10px 10px 0 0;
}

.board-table th {
  padding: 1rem 1.2rem;
  text-align: left;
  font-weight: 600;
  color: var(--primary-dark);
  border-bottom: 2px solid var(--stroke);
  font-size: 0.9rem;
  letter-spacing: 0.05em;
}

.board-table th:first-child {
  width: 80px;
  text-align: center;
}

.board-table th:nth-child(2) {
  text-align: center;
}

.board-table tbody tr {
  border-bottom: 1px solid var(--stroke);
  transition: background-color 0.2s;
}

.board-table tbody tr:hover {
  background-color: rgba(0, 0, 0, 0.05);
}

.board-table td {
  padding: 1.2rem 1.2rem;
  color: var(--text);
  line-height: 1.6;
}

.board-table td:first-child {
  text-align: center;
  font-weight: 600;
  color: var(--primary);
  font-size: 0.95rem;
}

.board-table .question-text {
  font-size: 1rem;
  color: var(--text);
}

/* Update Pending */
.update-pending {
  text-align: center;
  padding: 4rem 2rem;
  color: var(--muted);
}

.update-pending-icon {
  font-size: 3rem;
  margin-bottom: 1rem;
  opacity: 0.5;
}

.update-pending h3 {
  color: var(--muted);
  margin-bottom: 0.5rem;
  font-size: 1.5rem;
}

.update-pending p {
  color: var(--muted);
  font-size: 1rem;
}
.alphabet-card {
  padding: 1rem;
  min-height: 100px;
}

.alphabet-header {
  font-size: 2rem;
  margin: 0;
  padding: 0;
  border: none;
}

.flip-card {
  height: 130px;
}

.flip-card-front,
.flip-card-back {
  padding: 1.5rem;
}

.verb-word {
  font-size: 1.5rem;
  margin-bottom: 0.8rem;
}

.ipa {
  font-size: 1rem;
}

.phonetic {
  font-size: 0.9rem;
}

.verb-meaning {
  font-size: 1.1rem;
  margin-bottom: 1rem;
}

.verb-example {
  font-size: 0.9rem;
}

.back-button.active-verbs-back-btn {
  position: static;
  font-size: 0.85rem;
  padding: 0.4rem 1rem;
}
/* Resources Description Grid */
.resources-description {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
  margin-bottom: 2.5rem;
}

.resources-description h3 {
  color: var(--primary-dark);
}

/* Resource Download Grid (3컬럼) */
.resource-download-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}

/* Resource Download Card */
.resource-download-card {
  background: #fff;
  border: 1px solid var(--stroke);
  border-radius: 20px;
  padding: 1.5rem;
  box-shadow: 0 12px 30px rgba(0,0,0,0.05);
  text-decoration: none;
  color: inherit;
  display: flex;
  flex-direction: column;
  gap: 0.8rem;
  transition: transform 0.3s, box-shadow 0.3s;
  min-height: 280px;
}

.resource-download-card .resource-card-icon {
  flex-shrink: 0;
}

.resource-download-card h4 {
  flex-shrink: 0;
}

.resource-download-card p {
  flex-grow: 1;
  margin-bottom: 0;
}

.resource-download-card .download-label {
  flex-shrink: 0;
  margin-top: auto;
}

.resource-download-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 18px 35px rgba(0,0,0,0.08);
}

/* Resource Card Icon */
.resource-card-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  color: var(--primary);
  background: rgba(189, 107, 77, 0.15);
}

/* Resource Card Title */
.resource-download-card h4 {
  margin: 0;
  font-size: 1.2rem;
  color: var(--text);
}

/* Download Label */
.download-label {
  font-weight: 600;
  color: var(--primary);
  font-size: 0.9rem;
  text-align: right;
  align-self: flex-end;
}

/* Pending State (준비중) */
.resource-download-card.pending {
  opacity: 0.7;
  pointer-events: none;
}

.resource-download-card.pending .download-label {
  color: var(--muted);
}
/* Active Verbs Container */
.active-verbs-container {
  margin-top: 2.5rem;
}

.active-verbs-container h3 {
  color: var(--primary-dark);
  margin-top: 0;
  margin-bottom: 1.5rem;
  font-weight: 600;
}

/* Alphabet Grid */
.alphabet-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
  gap: 1rem;
  margin-top: 1.5rem;
}

.alphabet-card {
  background: #fff;
  border: 1px solid var(--stroke);
  border-radius: 16px;
  padding: 1.5rem;
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.08);
  transition: transform 0.3s, box-shadow 0.3s;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 120px;
  cursor: pointer;
}

.alphabet-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.15);
  background: var(--bg);
}

.alphabet-header {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--primary);
  text-align: center;
  margin: 0;
  padding: 0;
  border: none;
}

/* Flip Cards for Active Verbs */
.flip-cards-container {
  margin-top: 2.5rem;
}

.flip-cards-container h3 {
  color: var(--primary-dark);
  margin-top: 0;
  margin-bottom: 1.5rem;
  font-weight: 600;
}

.flip-cards-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
  margin-top: 1.5rem;
}

.flip-card {
  background-color: transparent;
  width: 100%;
  height: 150px;
  perspective: 1000px;
  cursor: pointer;
}

.flip-card-inner {
  position: relative;
  width: 100%;
  height: 100%;
  text-align: center;
  transition: transform 0.6s;
  transform-style: preserve-3d;
}

.flip-card.flipped .flip-card-inner {
  transform: rotateY(180deg);
}

.flip-card-front,
.flip-card-back {
  position: absolute;
  width: 100%;
  height: 100%;
  backface-visibility: hidden;
  border-radius: 16px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  padding: 2rem;
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.08);
  border: 1px solid var(--stroke);
}

.flip-card-front {
  background: var(--surface);
}

.flip-card-back {
  background: var(--primary);
  color: #fff;
  transform: rotateY(180deg);
}

.verb-word {
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--primary-dark);
  margin-bottom: 1rem;
}

.pronunciation {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  align-items: center;
}

.ipa {
  font-size: 1.1rem;
  color: var(--muted);
  font-style: italic;
}

.phonetic {
  font-size: 1rem;
  color: var(--text);
  font-weight: 500;
}

.verb-meaning {
  font-size: 1.3rem;
  font-weight: 600;
  margin-bottom: 1.5rem;
  color: #fff;
}

.verb-example {
  font-size: 1rem;
  line-height: 1.6;
  color: rgba(255, 255, 255, 0.9);
  font-style: italic;
}

/* Back Button */
.back-button-wrapper {
  text-align: right;
  margin-bottom: 1.5rem;
}

/* Active Verbs Header Box */
.active-verbs-header-box {
  background: var(--surface);
  padding: 2rem 2.5rem;
  border-radius: 18px;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.08);
  margin-bottom: 2.5rem;
  border: 1px solid var(--stroke);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 2rem;
}

.active-verbs-header-content {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  flex: 1;
}

.active-verbs-icon {
  font-size: 2rem;
  line-height: 1;
  flex-shrink: 0;
}

.active-verbs-header-text h2 {
  margin: 0 0 0.5rem 0;
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--text);
}

.active-verbs-header-text p {
  margin: 0;
  font-size: 0.95rem;
  color: var(--muted);
  line-height: 1.5;
}

.back-button-wrapper.active-verbs-back {
  margin-bottom: 1rem;
  padding: 0;
}

.back-button {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: #fff !important;
  background: var(--primary);
  border: none;
  border-radius: 999px;
  padding: 0.45rem 1.4rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s;
  font-size: 0.95rem;
}

.back-button.active-verbs-back-btn {
  position: static;
  box-shadow: 0 6px 16px rgba(0, 0, 0, 0.2);
  background: var(--primary);
  color: #fff !important;
  border: 1px solid var(--primary);
  flex-shrink: 0;
}

.back-button.active-verbs-back-btn:hover {
  background: var(--primary-dark);
  color: #fff !important;
  transform: translateY(-2px);
}

.back-button:hover {
  background: var(--primary-dark);
  color: #fff !important;
  transform: translateY(-2px);
}

/* 모바일 반응형 */

@media (max-width: 768px) {
  .resource-download-grid {
    grid-template-columns: 1fr;
  }
}

/* Buttons */
.btn {
  padding: 0.9rem 2rem;
  border: none;
  border-radius: 4px;
  font-size: 0.9rem;
  cursor: pointer;
  transition: all 0.3s;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.btn-primary {
  background: var(--primary);
  color: #ffffff;
}

.btn-primary:hover {
  background: var(--primary-dark);
}

.btn-secondary {
  background: var(--light-gray);
  color: var(--text);
  border: 1px solid var(--stroke);
}

.btn-secondary:hover {
  background: var(--stroke);
}

.nav-menu > li.cta {
  background: var(--light-gray);
  color: var(--text) !important;
  border-radius: 4px;
  margin-left: 0.8rem;
  padding: 0.5rem 1.2rem;
  border: 1px solid var(--stroke);
}

.nav-menu > li.cta:hover {
  background: var(--stroke);
}

/* Footer */
footer {
  background: var(--text);
  color: #ffffff;
  text-align: center;
  padding: 2.5rem;
  margin-top: 0;
}

/* Responsive Design */
@media (max-width: 768px) {
  .nav-container {
    flex-wrap: wrap;
    align-items: center;
    width: 100%;
    padding: 0 1rem;
    max-width: 100%;
  }

  nav {
    padding: 1rem 0;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    width: 100%;
    z-index: 1000;
    background: #ffffff;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    max-height: 100vh;
    overflow-y: auto;
    overflow-x: hidden;
    -webkit-overflow-scrolling: touch;
  }
  
  .nav-container {
    max-height: 100vh;
    overflow-y: auto;
    overflow-x: hidden;
    -webkit-overflow-scrolling: touch;
  }
  
  body {
    padding-top: 80px;
    overflow-x: hidden;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
    height: auto;
    min-height: 100vh;
  }
  
  html {
    overflow-x: hidden;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
    height: auto;
  }

  .logo {
    order: 1;
    margin-right: auto;
    margin-bottom: 0;
    height: 60px;
    width: auto;
    z-index: 1001;
    position: relative;
  }

  .logo img {
    height: 60px;
  }

  .menu-toggle {
    display: flex;
    order: 2;
    margin-left: auto;
    margin-bottom: 0;
    z-index: 1001;
    position: relative;
  }

  .container {
    padding: 0 1rem;
    max-width: 100%;
    width: 100%;
  }

  .back-button {
    font-size: 0.75rem !important;
    padding: 0.6rem 1.2rem !important;
    min-height: 44px !important;
    white-space: normal !important;
    line-height: 1.3 !important;
  }

  .back-button.active-verbs-back-btn {
    font-size: 0.75rem !important;
    padding: 0.6rem 1.2rem !important;
    min-height: 44px !important;
  }
  
  .back-button.voice-room-back-btn {
    font-size: 0.7rem !important;
    padding: 0.6rem 1.2rem !important;
    min-height: 44px !important;
    white-space: normal !important;
    line-height: 1.3 !important;
  }

  .resource-download-grid {
    grid-template-columns: 1fr;
  }

  .resources-bottom-layout {
    grid-template-columns: 1fr !important;
  }

  .nav-menu {
    display: none;
    order: 3;
    width: 100%;
    flex-direction: column;
    margin-top: 0;
    margin-left: 0;
    align-items: stretch;
    flex-basis: 100%;
    max-height: none;
    overflow-y: visible;
  }

  .nav-menu.active {
    display: flex;
  }

  .nav-menu > li {
    width: 100%;
    padding: 1rem;
    border-bottom: 1px solid var(--stroke);
  }

  .nav-menu > li.has-dropdown::after {
    float: right;
  }

  .dropdown {
    position: static;
    opacity: 1;
    visibility: visible;
    transform: none;
    box-shadow: none;
    margin-top: 0;
    background: var(--bg);
    border-radius: 0;
  }

  .dropdown li {
    padding: 0.75rem 1rem;
    border-bottom: 1px solid var(--stroke);
  }

  .hero-split {
    grid-template-columns: 1fr;
    gap: 2rem;
    padding: 2rem 0 6rem 0; /* 하단 패딩 더 증가 */
    min-height: calc((100vh - 120px) / 4);
    /* 배경에 하단 그라데이션 추가로 더 부드러운 전환 */
    background: 
      linear-gradient(
        to bottom,
        transparent 0%,
        rgba(255, 255, 255, 0.02) 60%,
        rgba(255, 255, 255, 0.05) 75%,
        rgba(255, 255, 255, 0.1) 85%,
        rgba(255, 255, 255, 0.2) 95%,
        rgba(255, 255, 255, 0.3) 100%
      ),
      linear-gradient(135deg, #2a2a2a 0%, #1a1a1a 100%);
    position: relative;
    overflow: hidden; /* 페이드 효과를 위한 오버플로우 */
  }

  .hero-content {
    padding-left: 1.5rem;
    padding-right: 1.5rem;
    padding-bottom: 3rem; /* 페이드 효과 위에 버튼이 보이도록 하단 패딩 추가 */
  }

  .hero-images {
    padding: 1rem 1.5rem;
  }

  .hero-title {
    font-size: 3.75rem;
  }

  .hero-subtitle {
    font-size: 1.35rem;
  }

  .hero-buttons {
    flex-direction: column;
  }

  .hero-images {
    height: auto;
    order: -1;
    gap: 1.5rem;
  }

  .image-wrapper {
    width: 90%;
    max-width: 100%;
    aspect-ratio: 16 / 9;
    margin-left: 0 !important;
    transform: rotate(0deg) !important;
  }

  .image-wrapper:hover {
    transform: rotate(0deg) scale(1.02) !important;
  }

  .home-resources {
    padding: 5rem 1.5rem 2rem 1.5rem; /* 상단 패딩 더 증가 */
    margin-top: -120px; /* hero의 페이드와 더 많이 겹치도록 */
    position: relative;
    z-index: 2;
    background: #ffffff;
  }

  .home-resources-grid {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

  .container {
    padding: 0;
  }

  .content-card {
    padding: 1.5rem;
  }

  .login-container {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .login-divider {
    width: 100%;
    height: 1px;
    min-height: 1px;
  }

  .login-member {
    padding-right: 0;
    padding-bottom: 1rem;
  }

  .login-admin {
    padding-left: 0;
    padding-top: 1rem;
  }

  .pursue-grid {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

  .pursue-divider {
    width: 100%;
    height: 1px;
    min-height: 1px;
  }

  .discover-grid {
    grid-template-columns: 1fr;
  }

  .active-verbs-header-box {
    flex-direction: column;
    align-items: flex-start;
    padding: 1.5rem;
    gap: 1.5rem;
  }

  .active-verbs-header-content {
    width: 100%;
    gap: 1rem;
  }

  .active-verbs-header-text h2 {
    font-size: 1.5rem;
  }

  .active-verbs-header-text p {
    font-size: 0.9rem;
  }

  .back-button.active-verbs-back-btn {
    width: 100%;
    justify-content: center;
    font-size: 0.85rem;
    padding: 0.5rem 1rem;
  }
}

/* One Sentence Page Styles */
/* One Sentence 2-Column Layout */
.one-sentence-layout {
  display: grid;
  grid-template-columns: 4fr 6fr;
  gap: 1.5rem;
  align-items: stretch;
}

.one-sentence-left-col {
  display: flex;
  flex-direction: column;
}

.one-sentence-right-col {
  min-height: 400px;
}

.one-sentence-image img {
  width: 100%;
  border-radius: 12px;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

.one-sentence-calendar {
  background: linear-gradient(135deg, #fbb6ce 0%, #f9a8d4 100%);
  border-radius: 16px;
  padding: 1rem;
  color: #9d174d;
}

.calendar-body {
  background: #fff5f7;
  border-radius: 12px;
  padding: 0.75rem;
}

.calendar-weekdays,
.calendar-days {
  color: #831843;
}

.calendar-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.75rem;
  font-size: 0.95rem;
  font-weight: 600;
}

.calendar-nav {
  background: rgba(255,255,255,0.5);
  border: none;
  color: #9d174d;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  cursor: pointer;
  font-size: 1rem;
  transition: background 0.2s;
}

.calendar-nav:hover {
  background: rgba(255,255,255,0.8);
}

.calendar-weekdays {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  text-align: center;
  font-size: 0.7rem;
  margin-bottom: 0.25rem;
  opacity: 0.8;
}

.calendar-days {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 2px;
}

.calendar-day {
  aspect-ratio: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 6px;
  cursor: pointer;
  font-size: 0.8rem;
  transition: all 0.2s;
}

.calendar-day:hover {
  background: #fbcfe8;
}

.calendar-day.today {
  border: 2px solid #f9a8d4;
}

.calendar-day.selected {
  background: #f9a8d4;
  color: #9d174d;
  font-weight: 600;
}

.calendar-day.other-month {
  opacity: 0.4;
}

.audio-btn {
  background: #014369;
  border: none;
  border-radius: 50%;
  width: 36px;
  height: 36px;
  cursor: pointer;
  font-size: 1rem;
  transition: all 0.2s;
  vertical-align: middle;
  margin-right: 0.5rem;
}

.audio-btn:hover {
  background: #014369;
  transform: scale(1.1);
}

@media (max-width: 768px) {
  .one-sentence-layout {
    grid-template-columns: 1fr;
  }
}

/* 52주 필사 스타일 */
.week-filter {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-top: 2rem;
  padding-top: 2rem;
  border-top: 1px solid var(--stroke);
}

.week-filter-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.filter-btn {
  padding: 0.6rem 1.2rem;
  background: var(--surface);
  border: 1px solid var(--stroke);
  border-radius: 8px;
  cursor: pointer;
  font-size: 1.35rem;
  font-weight: 600;
  color: var(--text);
  transition: all 0.3s ease;
  text-align: left;
}

/* 전체 버튼을 제외한 나머지 필터 버튼들의 너비 통일 */
.day-filter-row:not(:first-child) .filter-btn {
  width: 100%;
}

.filter-btn:hover {
  background: var(--light-gray);
  border-color: var(--primary);
}

.filter-btn.active {
  background: var(--primary);
  color: #ffffff;
  border-color: var(--primary);
}

/* 52주 필사 레이아웃 (1 sentence와 동일한 비율) */
.weeks-layout {
  display: grid;
  grid-template-columns: 4fr 6fr;
  gap: 1.5rem;
  align-items: stretch;
}

.weeks-left-col {
  display: flex;
  flex-direction: column;
}

.weeks-right-col {
  min-height: 400px;
}

.weeks-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 1.5rem;
  margin-top: 0;
  margin-bottom: 0;
  padding: 0;
}

.week-card {
  background: var(--primary);
  border: 1px solid var(--primary);
  border-radius: 12px;
  padding: 1.5rem;
  cursor: pointer;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  text-align: center;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  min-height: 140px;
}

.week-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.1);
}

.week-number {
  font-size: 0.9rem;
  color: #ffffff;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.week-card h3 {
  font-size: 1.2rem;
  margin: 0.5rem 0;
  color: #ffffff;
  line-height: 1.4;
}

.week-date {
  font-size: 0.85rem;
  color: #ffffff;
  margin-top: 0.5rem;
}

/* 모달 스타일 */
.week-modal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.5);
  z-index: 1000;
  overflow-y: auto;
  padding: 2rem;
}

.week-modal.active {
  display: flex;
  align-items: center;
  justify-content: center;
}

.week-modal-content {
  background: var(--surface);
  border-radius: 16px;
  padding: 2.5rem;
  max-width: 800px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  position: relative;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

.close-modal {
  position: absolute;
  top: 1.5rem;
  right: 1.5rem;
  background: none;
  border: none;
  font-size: 2rem;
  cursor: pointer;
  color: var(--text-secondary);
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  transition: all 0.3s ease;
}

.close-modal:hover {
  background: var(--light-gray);
  color: var(--text);
}

.week-detail {
  margin-top: 1rem;
}

.week-header {
  margin-bottom: 2rem;
  padding-bottom: 1.5rem;
  border-bottom: 2px solid var(--stroke);
}

.week-badge {
  display: inline-block;
  padding: 0.4rem 1rem;
  background: var(--primary);
  color: #ffffff;
  border-radius: 20px;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 1rem;
}

.week-header h2 {
  font-size: 2rem;
  margin: 0.5rem 0;
  color: var(--text);
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.week-english-text {
  font-size: 1.1rem;
  line-height: 1.8;
  margin: 2rem 0;
  padding: 1.5rem;
  background: var(--bg);
  border-radius: 8px;
  border-left: 4px solid var(--primary);
}

.week-english-text p {
  margin-bottom: 1rem;
}

.week-english-text p:last-child {
  margin-bottom: 0;
}

.week-korean-text {
  margin: 2rem 0;
  padding: 1.5rem;
  background: #f8f9fa;
  border-radius: 8px;
}

.week-korean-text h4 {
  font-size: 1.1rem;
  color: var(--primary);
  margin-bottom: 1rem;
  font-weight: 600;
}

.week-korean-text p {
  font-size: 1rem;
  line-height: 1.8;
  margin-bottom: 1rem;
  color: var(--text);
}

.week-korean-text p:last-child {
  margin-bottom: 0;
}

.week-expressions {
  margin-top: 2rem;
  padding-top: 2rem;
  border-top: 1px solid var(--stroke);
}

.week-expressions h4 {
  font-size: 1.1rem;
  color: var(--primary);
  margin-bottom: 1rem;
  font-weight: 600;
}

.week-expressions ul {
  list-style: none;
  padding: 0;
}

/* 보이스룸 질문 카드 반응형 */
@media (max-width: 768px) {
  .voice-room-header-content {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

  .voice-room-header-section {
    grid-template-columns: 1fr;
  }

  .voice-room-header-content {
    grid-template-columns: 1fr;
    gap: 1.5rem;
    padding: 1.5rem;
  }

  .voice-room-cards-grid {
    grid-template-columns: 1fr;
    padding: 0 1rem;
    gap: 1rem;
  }

  .voice-room-question-card {
    padding: 1.2rem;
  }

  .question-number {
    padding: 0.5rem 1rem;
    font-size: 0.85rem;
  }

  .voice-room-question-card .question-text {
    font-size: 1.32rem;
    font-weight: 700;
  }

  /* 보이스룸 헤더 박스 반응형 */
  .voice-room-header-box {
    gap: 1.5rem;
  }

  .voice-room-top-row {
    flex-direction: column;
    gap: 1rem;
  }

  .back-button.voice-room-back-btn {
    align-self: flex-end;
    font-size: 0.7rem !important;
    padding: 0.6rem 1.2rem !important;
    min-height: 44px !important;
    white-space: normal !important;
    line-height: 1.3 !important;
  }
  
  .back-button {
    font-size: 0.75rem !important;
    padding: 0.6rem 1.2rem !important;
    min-height: 44px !important;
    white-space: normal !important;
    line-height: 1.3 !important;
  }
}

.week-expressions li {
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--stroke);
  font-size: 1rem;
  line-height: 1.6;
}

.week-expressions li:last-child {
  border-bottom: none;
}

.week-expressions li strong {
  color: var(--primary);
  font-weight: 600;
  margin-right: 0.5rem;
}

/* Day 모달 스타일 (보이스룸 100일 챌린지) */
.day-modal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.5);
  z-index: 1000;
  overflow-y: auto;
  padding: 2rem;
}

.day-modal.active {
  display: flex;
  align-items: center;
  justify-content: center;
}

.day-modal-content {
  background: var(--surface);
  border-radius: 16px;
  padding: 2.5rem;
  max-width: 900px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  position: relative;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

.day-detail {
  margin-top: 1rem;
}

.day-header {
  margin-bottom: 2rem;
  padding-bottom: 1.5rem;
  border-bottom: 2px solid var(--stroke);
}

.day-badge {
  display: inline-block;
  padding: 0.4rem 1rem;
  background: var(--primary);
  color: #ffffff;
  border-radius: 20px;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 1rem;
}

.day-header h2 {
  font-size: 2rem;
  margin: 0.5rem 0;
  color: var(--text);
  line-height: 1.3;
}

.day-section {
  margin-bottom: 2.5rem;
}

.day-section-header {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1rem;
}

.day-section h3 {
  font-size: 1.5rem;
  color: var(--primary);
  margin: 0;
  font-weight: 600;
  flex: 1;
}

.day-content {
  font-size: 1rem;
  line-height: 1.8;
  color: var(--text);
}

.day-content p {
  margin: 0.75rem 0;
}

.reading-content {
  background: var(--bg);
  padding: 1.5rem;
  border-radius: 12px;
  border-left: 3px solid var(--primary);
}

.vocabulary-list {
  list-style: none;
  padding: 0;
  margin: 1rem 0;
}

.vocabulary-list li {
  padding: 1rem 0;
  border-bottom: 1px solid var(--stroke);
  font-size: 1rem;
  line-height: 1.7;
}

.vocabulary-list li:last-child {
  border-bottom: none;
}

.vocabulary-list li strong {
  color: var(--primary);
  font-weight: 600;
  margin-right: 0.5rem;
}

.activity-content {
  background: var(--bg);
  padding: 1.5rem;
  border-radius: 12px;
  border-left: 3px solid var(--primary);
}

.activity-content p {
  margin: 0.5rem 0;
  line-height: 1.7;
}

.discussion-list {
  list-style: none;
  padding: 0;
  margin: 1rem 0;
}

.discussion-list li {
  padding: 1rem 0;
  border-bottom: 1px solid var(--stroke);
  font-size: 1rem;
  line-height: 1.7;
}

.discussion-list li:last-child {
  border-bottom: none;
}

/* 반응형 디자인 */
@media (max-width: 768px) {
  .weeks-layout {
    grid-template-columns: 1fr;
  }

  .weeks-grid {
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    gap: 1rem;
    padding: 0;
  }

  .week-card {
    padding: 1rem;
    min-height: 120px;
  }

  .week-card h3 {
    font-size: 1rem;
  }

  .week-filter {
    gap: 0.5rem;
  }

  .filter-btn {
    padding: 0.5rem 1rem;
    font-size: 1.275rem;
  }

  .week-modal {
    padding: 1rem;
  }

  .week-modal-content {
    padding: 1.5rem;
  }

  .week-header h2 {
    font-size: 1.5rem;
  }

  .week-english-text {
    font-size: 1rem;
    padding: 1rem;
  }

  .day-modal {
    padding: 1rem;
  }

  .day-modal-content {
    padding: 1.5rem;
  }

  .day-header h2 {
    font-size: 1.5rem;
  }

  .day-section-header {
    flex-wrap: wrap;
  }

  .day-section h3 {
    font-size: 1.3rem;
  }

  .day-content {
    font-size: 0.95rem;
  }
}

/* Popup Modal Styles */
.popup-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.6);
  z-index: 10000;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  animation: fadeIn 0.3s ease;
}

.popup-overlay.active {
  display: flex;
}

.popup-modal {
  background: var(--surface);
  border-radius: 20px;
  max-width: 520px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  position: relative;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
  animation: slideUp 0.3s ease;
}

@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.popup-close {
  position: absolute;
  top: 1rem;
  right: 1rem;
  background: transparent;
  border: none;
  font-size: 2rem;
  color: var(--muted);
  cursor: pointer;
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  transition: all 0.3s ease;
  z-index: 1;
}

.popup-close:hover {
  background: var(--light-gray);
  color: var(--text);
}

.popup-content {
  padding: 2.5rem;
  text-align: center;
}

.popup-title {
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 1.5rem;
  line-height: 1.4;
}

.popup-body {
  color: var(--text);
  line-height: 1.8;
  margin-bottom: 2rem;
  text-align: left;
}

.popup-body p {
  margin-bottom: 1.2rem;
  font-size: 1.05rem;
}

.popup-body p:last-child {
  margin-bottom: 0;
}

.popup-features {
  background: var(--bg);
  padding: 1.5rem;
  border-radius: 12px;
  margin: 1.5rem 0;
  text-align: left;
}

.popup-feature-item {
  padding: 0.5rem 0;
  font-size: 1rem;
  color: var(--text);
}

.popup-cta {
  font-weight: 600;
  color: var(--primary);
  margin-top: 1rem !important;
  margin-bottom: 0 !important;
}

.popup-button {
  display: inline-block;
  background: var(--primary);
  color: #ffffff;
  padding: 1rem 2rem;
  border-radius: 12px;
  text-decoration: none;
  font-weight: 600;
  font-size: 1.1rem;
  transition: all 0.3s ease;
  width: 100%;
  text-align: center;
  box-shadow: 0 4px 12px rgba(189, 107, 77, 0.3);
}

.popup-button:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(189, 107, 77, 0.4);
}

.popup-checkbox-container {
  margin-top: 1.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--stroke);
  text-align: center;
}

.popup-checkbox-label {
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 0.9rem;
  color: var(--text);
  user-select: none;
  gap: 0.5rem;
}

.popup-checkbox {
  width: 18px;
  height: 18px;
  cursor: pointer;
  accent-color: var(--primary);
}

@media (max-width: 768px) {
  .popup-modal {
    max-width: 100%;
    border-radius: 16px;
  }

  .popup-content {
    padding: 2rem 1.5rem;
  }

  .popup-title {
    font-size: 1.5rem;
  }

  .popup-body p {
    font-size: 1rem;
  }

  .popup-button {
    padding: 0.9rem 1.5rem;
    font-size: 1rem;
  }
}