/* ==============================================================================
   Design System & Variable Definitions (Minimalist Light Campaign Mode)
   ============================================================================== */
:root {
  /* HSL Color System */
  --bg-primary: hsl(0, 0%, 98%);
  --bg-secondary: hsl(0, 0%, 100%);
  --bg-light: hsl(210, 17%, 96%);
  
  --text-primary: hsl(210, 10%, 15%);
  --text-secondary: hsl(210, 8%, 40%);
  --text-light: hsl(210, 8%, 65%);
  
  /* Brand Colors (Korea University Crimson Theme) */
  --color-crimson: hsl(342, 100%, 27%);       /* #8B002A (KU Crimson) */
  --color-crimson-hover: hsl(342, 100%, 20%);
  --color-gold: hsl(45, 100%, 45%);             /* Gold Accent */
  --color-gold-light: rgba(139, 0, 42, 0.08);   /* Light Crimson Background */
  
  /* Academic Affiliation (Korea University Crimson - Keep for consistency) */
  --color-ku-crimson: hsl(342, 100%, 27%);     /* #8B002A */
  --color-ku-crimson-light: rgba(139, 0, 42, 0.08);
  
  --border-color: hsl(210, 14%, 90%);
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.02), 0 1px 2px rgba(0, 0, 0, 0.04);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -1px rgba(0, 0, 0, 0.03);
  --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.06), 0 10px 10px -5px rgba(0, 0, 0, 0.02);
  --shadow-xl: 0 25px 50px -12px rgba(139, 0, 42, 0.08);
  
  /* Fonts */
  --font-en: 'Outfit', 'Inter', sans-serif;
  --font-ko: 'Pretendard', sans-serif;
}

/* ==============================================================================
   Reset & Base Styles
   ============================================================================== */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-en), var(--font-ko);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  word-break: keep-all;
}

a {
  color: var(--color-crimson);
  text-decoration: none;
  transition: color 0.2s ease;
}

a:hover {
  color: var(--color-crimson-hover);
}

ul {
  list-style: none;
}

/* ==============================================================================
   Layout Utilities
   ============================================================================== */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: 96px 0;
}

.bg-light {
  background-color: var(--bg-light);
}

.grid-2 {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 48px;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.section-title {
  font-family: var(--font-ko);
  font-size: 2.2rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 32px;
  position: relative;
}

.section-title::after {
  content: '';
  display: block;
  width: 60px;
  height: 4px;
  background-color: var(--color-crimson);
  margin-top: 12px;
}

.section-header-center {
  text-align: center;
  max-width: 800px;
  margin: 0 auto 64px auto;
}

.section-header-center .section-title::after {
  margin: 12px auto 0 auto;
}

.section-desc-center {
  font-size: 1.1rem;
  color: var(--text-secondary);
  margin-top: 16px;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 32px;
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: 6px;
  cursor: pointer;
  transition: all 0.2s ease;
  border: none;
}

.btn-primary {
  background-color: var(--color-crimson);
  color: var(--bg-secondary);
  box-shadow: 0 4px 6px rgba(139, 0, 42, 0.15);
}

.btn-primary:hover {
  background-color: var(--color-crimson-hover);
  transform: translateY(-2px);
  box-shadow: 0 8px 12px rgba(139, 0, 42, 0.2);
}

.btn-secondary {
  background-color: transparent;
  color: var(--text-primary);
  border: 1.5px solid var(--border-color);
  margin-left: 12px;
}

.btn-secondary:hover {
  background-color: var(--bg-secondary);
  border-color: var(--text-primary);
  transform: translateY(-2px);
}

/* ==============================================================================
   Components
   ============================================================================== */

/* Navbar */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  background-color: rgba(250, 250, 250, 0.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-color);
  z-index: 1000;
}

.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 80px;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 12px;
}

.nav-logo-img {
  height: 36px;
  width: auto;
  object-fit: contain;
}

.nav-logo .prof {
  font-size: 1.2rem;
  font-weight: 800;
  color: var(--color-crimson);
  letter-spacing: -0.5px;
}

.nav-menu {
  display: flex;
  gap: 36px;
}

.nav-link {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-secondary);
  transition: color 0.2s ease;
}

.nav-link:hover {
  color: var(--color-crimson);
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--text-primary);
}

/* Hero Section */
.hero-section {
  padding: 0 0 60px 0;
  background-size: cover;
  background-position: center;
  border-bottom: 1px solid var(--border-color);
  overflow: hidden;
}

.hero-motto-header {
  text-align: center;
  margin-bottom: 40px;
  width: 100%;
}

.hero-motto-header .hero-badge {
  margin-bottom: 12px;
}

.hero-motto-header .hero-tagline {
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--color-crimson);
  letter-spacing: 0.5px;
  margin-bottom: 0;
}

.hero-centered-content {
  max-width: 1000px; /* 800px -> 1000px */
  width: 100%;
  margin: 0 auto;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.hero-centered-content .hero-title {
  font-size: clamp(2.5rem, 6.8vw, 4.8rem); /* 3.2rem -> clamp 반응형 대형 폰트 변경 */
  font-weight: 900;
  line-height: 1.15; /* line-height 축소 */
  margin-bottom: 0;
  letter-spacing: -1.8px; /* letter-spacing 더 긴밀하게 변경 */
  width: 100%;
}

.hero-subtitle-affiliation {
  margin-top: 20px;
  font-family: var(--font-ko);
  font-size: 1.45rem;
  font-weight: 600;
  color: var(--text-secondary);
  letter-spacing: -0.5px;
  line-height: 1.4;
}

.brand-ku-crimson {
  color: var(--color-crimson);
  font-weight: 850;
}

.candidate-trans-wrap-centered {
  margin-top: 8px; /* 48px -> 8px 로 단축하여 텍스트와 사진 간격 완전 밀착 */
  position: relative;
  display: flex;
  justify-content: center;
  align-items: flex-end;
  max-width: 440px;
  width: 100%;
}

.candidate-trans-img-centered {
  width: 100%;
  height: auto;
  object-fit: contain;
  display: block;
  filter: drop-shadow(0 15px 30px rgba(139, 0, 42, 0.08));
}

.hero-actions-vertical {
  display: flex;
  flex-direction: column;
  gap: 12px;
  width: 100%;
  max-width: 260px;
}

.hero-actions-vertical .btn {
  width: 100%;
  margin: 0;
  padding: 14px 24px;
  font-size: 0.95rem;
  text-align: center;
  justify-content: center;
}

.hero-actions-vertical .btn-secondary {
  background-color: var(--bg-light);
  color: var(--color-crimson);
  border: 1.5px solid var(--color-crimson);
}

.hero-actions-vertical .btn-secondary:hover {
  background-color: var(--bg-secondary);
  transform: translateY(-2px);
}

.hero-text-side {
  text-align: left;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  background-color: var(--color-ku-crimson-light);
  color: var(--color-ku-crimson);
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  border-radius: 50px;
  margin-bottom: 20px;
  letter-spacing: 1px;
}

.hero-tagline {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--color-gold);
  margin-bottom: 12px;
  letter-spacing: 0.5px;
}

.tagline-fade-text {
  transition: opacity 0.8s ease-in-out;
  opacity: 1;
  display: inline-block;
}

.tagline-fade-text.fade-out {
  opacity: 0;
}

.hero-title {
  font-size: 3.6rem;
  font-weight: 900;
  line-height: 1.2;
  color: var(--text-primary);
  margin-bottom: 24px;
}

.hero-title .highlight {
  color: var(--color-crimson);
}

.hero-intro {
  font-size: 1.1rem;
  color: var(--text-secondary);
  margin-bottom: 40px;
  line-height: 1.7;
}

/* Candidate Transparent Portrait Wrap */
.candidate-trans-wrap {
  position: relative;
  width: 100%;
  max-width: 360px;
  display: flex;
  flex-direction: column;
  align-items: center;
  mask-image: linear-gradient(to bottom, black 75%, transparent 98%);
  -webkit-mask-image: linear-gradient(to bottom, black 75%, transparent 98%);
}

.candidate-trans-img {
  width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
  transition: transform 0.3s ease;
}

.candidate-trans-wrap:hover .candidate-trans-img {
  transform: scale(1.02);
}

.candidate-info-overlay {
  position: absolute;
  bottom: 16px;
  left: 50%;
  transform: translateX(-50%);
  color: var(--text-primary);
  display: flex;
  flex-direction: column;
  align-items: center;
  z-index: 10;
  background: none;
  backdrop-filter: none;
  border: none;
  box-shadow: none;
  padding: 0;
  text-align: center;
  width: 100%;
}

.candidate-info-overlay .univ-tag {
  font-size: 0.85rem;
  font-weight: 700;
  color: #ffffff;
  letter-spacing: -0.3px;
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.85), 0 0 10px rgba(0, 0, 0, 0.4);
}

.candidate-info-overlay .name-tag {
  font-size: 1.85rem;
  font-weight: 850;
  color: #ffffff;
  letter-spacing: 4px;
  margin-top: 4px;
  text-shadow: 0 2px 6px rgba(0, 0, 0, 0.9), 0 0 12px rgba(0, 0, 0, 0.5);
}

/* ==============================================================================
   Inline AI Chatbot Widget (배경 및 높이 일체화 개편)
   ============================================================================== */
.chat-section-inline {
  padding: 96px 0;
  background-color: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
}

.chat-wrapper-inline {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 48px;
  align-items: flex-start;
  background-color: var(--bg-secondary);
  border-radius: 16px;
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
}

.chat-intro-panel {
  padding: 48px;
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: center;
  border-right: 1px solid var(--border-color);
  background-color: var(--bg-primary);
}

.chat-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 12px;
  background-color: var(--color-gold-light);
  color: var(--color-gold);
  font-size: 0.8rem;
  font-weight: 700;
  border-radius: 4px;
  width: max-content;
  margin-bottom: 20px;
}

.chat-panel-title {
  font-size: 1.8rem;
  font-weight: 800;
  margin-bottom: 16px;
}

.chat-panel-desc {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 24px;
}

.log-notice-box {
  background-color: rgba(0, 0, 0, 0.02);
  border-left: 3px solid var(--color-crimson);
  padding: 16px;
  border-radius: 4px;
  display: flex;
  gap: 12px;
  align-items: flex-start;
}

.log-notice-box i {
  color: var(--color-crimson);
  margin-top: 3px;
  font-size: 0.95rem;
}

.log-notice-box p {
  font-size: 0.8rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

/* Chat UI Area - Streamable 높이 자동 연동 */
.chat-ui-inline {
  display: flex;
  flex-direction: column;
  height: auto;
  background-color: var(--bg-secondary);
  width: 100%;
}

.chat-header-inline {
  padding: 24px 32px 12px 32px;
  border-bottom: 1px solid var(--border-color);
  background-color: var(--bg-secondary);
}

.chat-status {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 8px;
}

.status-dot {
  width: 8px;
  height: 8px;
  background-color: #4CAF50;
  border-radius: 50%;
  display: inline-block;
}

/* 메시지들이 들어가는 박스 - 스크롤 걷어내고 자연스러운 본문 피드화 */
.chat-messages-inline {
  padding: 24px 32px;
  display: flex;
  flex-direction: column;
  gap: 20px;
  background-color: var(--bg-secondary);
  height: auto;
  overflow-y: visible;
}

.message {
  max-width: 85%;
  padding: 14px 20px;
  border-radius: 12px;
  font-size: 0.95rem;
  line-height: 1.6;
}

.message-bot {
  background-color: var(--bg-light);
  color: var(--text-primary);
  align-self: flex-start;
  border-bottom-left-radius: 2px;
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-sm);
}

.message-user {
  background-color: var(--color-crimson);
  color: var(--bg-secondary);
  align-self: flex-end;
  border-bottom-right-radius: 2px;
  box-shadow: var(--shadow-sm);
}

/* 입력 폼 - 인풋 텍스트 잘림 해결 */
.chat-input-inline-form {
  display: flex;
  align-items: center; /* 인풋과 버튼 수직 중앙 정렬 */
  padding: 20px 32px 32px 32px;
  background-color: var(--bg-secondary);
  box-sizing: border-box;
}

.chat-input-inline-form input {
  flex: 1 1 0%; /* flex-basis를 0%로 강제하여 placeholder 길이와 상관없이 유연하게 축소되도록 함 */
  width: 0; /* 강제 flex 크기 계산 유도 */
  min-width: 0; /* flex 환경에서 최소 너비 한계를 없애 오버플로우 차단 */
  border: 1.5px solid var(--border-color);
  border-radius: 6px;
  padding: 16px 20px; /* 세로 폭을 넓히고 여유 공간을 주는 패딩 */
  font-size: 16px; /* 모바일 브라우저 줌 방지 */
  line-height: 1.5; /* 글씨가 수직 정렬 시 잘리지 않도록 행간 고정 */
  outline: none;
  font-family: var(--font-ko);
  color: var(--text-primary);
  background-color: var(--bg-primary);
  transition: border-color 0.2s ease;
  box-sizing: border-box; /* 높이 계산 꼬임 방지 */
}

.chat-input-inline-form input:focus {
  border-color: var(--color-crimson);
  background-color: var(--bg-secondary);
}

.chat-send-inline-btn {
  background-color: var(--color-crimson);
  color: var(--bg-secondary);
  border: none;
  border-radius: 6px;
  width: 54px; /* 패딩이 커진 인풋과 세로 정렬이 맞게 크기 미세 조절 */
  height: 54px;
  margin-left: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: background-color 0.2s ease;
  font-size: 1.1rem;
  box-sizing: border-box;
  flex-shrink: 0; /* 버튼이 절대 찌그러지거나 잘리지 않도록 크기 고정 */
}

.chat-send-inline-btn:hover {
  background-color: var(--color-crimson-hover);
}

/* Typist / Typing Indicator bubble */
.typing-indicator {
  display: flex;
  gap: 4px;
  padding: 12px 18px;
  align-self: flex-start;
}

.typing-indicator span {
  width: 6px;
  height: 6px;
  background-color: var(--text-light);
  border-radius: 50%;
  animation: typing 1s infinite alternate;
}

.typing-indicator span:nth-child(2) {
  animation-delay: 0.2s;
}

.typing-indicator span:nth-child(3) {
  animation-delay: 0.4s;
}

@keyframes typing {
  from {
    transform: translateY(0);
  }
  to {
    transform: translateY(-5px);
  }
}

/* ==============================================================================
   N.E.X.U.S 5 Promises Section
   ============================================================================== */
/* Card Interactivity Enhancements */
.nexus-card {
  background-color: var(--bg-secondary);
  padding: 36px;
  border-radius: 12px;
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-sm);
  position: relative;
  transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
  overflow: hidden;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

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

.nexus-card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 8px;
}

.nexus-letter {
  font-family: var(--font-en);
  font-size: 3.5rem;
  font-weight: 800;
  color: var(--color-crimson);
  opacity: 0.12;
  line-height: 1;
  transition: opacity 0.2s ease, transform 0.2s ease;
}

.nexus-card:hover .nexus-letter {
  opacity: 0.22;
  transform: scale(1.1);
}

.card-expand-icon {
  font-size: 0.9rem;
  color: var(--text-light);
  opacity: 0.4;
  transition: opacity 0.2s ease, color 0.2s ease;
  margin-top: 8px;
}

.nexus-card:hover .card-expand-icon {
  opacity: 1;
  color: var(--color-crimson);
}

.nexus-card h4 {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--color-crimson);
  margin-bottom: 12px;
  margin-top: 8px;
  overflow-wrap: break-word;
  word-break: break-word;
}

.nexus-desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.6;
  flex-grow: 1;
}

.card-more-btn {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--color-crimson);
  opacity: 0.7;
  margin-top: 16px;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  transition: opacity 0.2s ease, gap 0.2s ease;
}

.nexus-card:hover .card-more-btn {
  opacity: 1;
  gap: 8px;
}

/* ==============================================================================
   HTML5 Dialog Modal Styling (Premium Glassmorphism & Micro-animations)
   ============================================================================== */
.nexus-modal {
  border: none;
  border-radius: 20px;
  padding: 0;
  max-width: 620px;
  width: 90%;
  background: rgba(255, 255, 255, 0.75);
  backdrop-filter: blur(25px) saturate(180%);
  -webkit-backdrop-filter: blur(25px) saturate(180%);
  border: 1px solid rgba(255, 255, 255, 0.45);
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
  overflow: hidden;
  
  /* Enforce exact viewport centering across all major mobile/desktop browsers */
  position: fixed;
  top: 50%;
  left: 50%;
  margin: 0;
  
  /* Modern CSS Entry/Exit Transition using @starting-style + center translation */
  opacity: 0;
  transform: translate(-50%, -50%) scale(0.95);
  transition: opacity 0.35s cubic-bezier(0.34, 1.56, 0.64, 1), 
              transform 0.35s cubic-bezier(0.34, 1.56, 0.64, 1), 
              display 0.35s allow-discrete;
}

.nexus-modal[open] {
  opacity: 1;
  transform: translate(-50%, -50%) scale(1);
}

@starting-style {
  .nexus-modal[open] {
    opacity: 0;
    transform: translate(-50%, -50%) scale(0.95);
  }
}

/* Modal Backdrop blurring */
.nexus-modal::backdrop {
  background: rgba(0, 32, 91, 0.35); /* KASBA dark blue tone backdrop */
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  opacity: 0;
  transition: opacity 0.3s ease, display 0.3s allow-discrete;
}

.nexus-modal[open]::backdrop {
  opacity: 1;
}

@starting-style {
  .nexus-modal[open]::backdrop {
    opacity: 0;
  }
}

.modal-content {
  padding: 30px;
  position: relative;
  max-height: 85vh;
  overflow-y: auto;
}

/* Custom Scrollbar for Modal content */
.modal-content::-webkit-scrollbar {
  width: 6px;
}
.modal-content::-webkit-scrollbar-track {
  background: transparent;
}
.modal-content::-webkit-scrollbar-thumb {
  background: rgba(0, 0, 0, 0.15);
  border-radius: 10px;
}

.modal-close-btn {
  position: absolute;
  top: 20px;
  right: 20px;
  border: none;
  background: rgba(0, 0, 0, 0.04);
  color: var(--text-primary);
  width: 32px;
  height: 32px;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  transition: background 0.2s, transform 0.2s;
  z-index: 20;
}

.modal-close-btn:hover {
  background: rgba(0, 0, 0, 0.08);
  transform: rotate(90deg);
}

.modal-header {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 16px;
  margin-top: 4px;
}

.modal-letter-badge {
  width: 48px;
  height: 48px;
  border-radius: 10px;
  background: var(--color-crimson);
  color: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-en);
  font-size: 1.6rem;
  font-weight: 800;
  box-shadow: 0 4px 10px rgba(0, 64, 152, 0.2);
}

.modal-title-group {
  display: flex;
  flex-direction: column;
}

.modal-subtitle {
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 1px;
  color: var(--color-crimson);
  text-transform: uppercase;
  margin-bottom: 0px;
}

.modal-title {
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--text-primary);
  margin: 0;
}

.modal-summary {
  font-size: 1rem;
  font-weight: 500;
  color: var(--text-primary);
  line-height: 1.5;
  margin-bottom: 20px;
  border-left: 3.5px solid var(--color-crimson);
  padding-left: 14px;
}

.modal-body {
  border-top: 1px solid var(--border-color);
  padding-top: 16px;
}

.modal-section-title {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.modal-section-title i {
  color: var(--color-crimson);
}

.modal-details-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.modal-details-list li {
  position: relative;
  padding-left: 18px;
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.45;
}

.modal-details-list li::before {
  content: "";
  position: absolute;
  left: 5px;
  top: 8px;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background-color: var(--color-crimson);
  opacity: 0.7;
}

/* ==============================================================================
   B.R.I.D.G.E Campaign CSS Extensions
   ============================================================================== */
.nexus-subtitle {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-secondary);
  display: inline-block;
  margin-top: 4px;
}

#modal-promises-container {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.modal-detail-item {
  border-bottom: 1px dashed var(--border-color);
  padding-bottom: 20px;
}

.modal-detail-item:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.modal-detail-item-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--color-crimson);
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.modal-detail-item-bullets {
  margin-left: 20px;
  margin-bottom: 12px;
  list-style-type: disc;
  color: var(--text-color);
  font-size: 0.95rem;
  line-height: 1.6;
}

.modal-detail-item-bullets li {
  margin-bottom: 4px;
}

.modal-detail-item-desc {
  font-size: 0.93rem;
  color: var(--text-muted);
  line-height: 1.6;
  word-break: keep-all;
  padding-left: 4px;
}

/* ==============================================================================
   Candidate Profile Layout (Verified Resume)
   ============================================================================== */
.timeline-card-flat {
  background-color: var(--bg-secondary);
  padding: 32px;
  border-radius: 12px;
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-sm);
}

.profile-sub-header {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text-primary);
  border-bottom: 2px solid var(--border-color);
  padding-bottom: 10px;
}

.profile-sub-header i {
  color: var(--color-crimson);
}

.flat-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.flat-list li {
  font-size: 0.9rem;
  color: var(--text-secondary);
  position: relative;
  padding-left: 16px;
}

.flat-list li::before {
  content: '•';
  color: var(--color-crimson);
  font-weight: bold;
  position: absolute;
  left: 0;
}

/* Candidate Pledge Box (Letter Layout) */
.candidate-pledge-box {
  background-color: var(--bg-secondary);
  padding: 48px;
  border-radius: 12px;
  border: 1.5px solid var(--color-crimson);
  box-shadow: var(--shadow-md);
  position: relative;
}

.pledge-title {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 24px;
  color: var(--color-crimson);
}

.pledge-content {
  font-size: 0.95rem;
  color: var(--text-primary);
  line-height: 1.8;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.pledge-sig {
  text-align: right;
  margin-top: 32px;
  font-weight: 700;
  font-size: 1.05rem;
}

.pledge-sig strong {
  font-size: 1.2rem;
  color: var(--color-crimson);
}

/* ==============================================================================
   Publication List
   ============================================================================== */
.publication-list {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.pub-item {
  display: flex;
  gap: 24px;
  padding: 24px;
  background-color: var(--bg-secondary);
  border-radius: 8px;
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-sm);
  transition: border-color 0.2s ease;
}

.pub-item:hover {
  border-color: var(--color-crimson);
}

.pub-number {
  font-family: var(--font-en);
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--border-color);
  line-height: 1;
}

.pub-item:hover .pub-number {
  color: var(--color-crimson);
}

.pub-details .pub-title {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 6px;
  color: var(--text-primary);
}

.pub-details .pub-authors {
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-bottom: 4px;
}

.pub-details .pub-journal {
  font-size: 0.85rem;
  color: var(--color-crimson);
}

/* Footer */
.footer {
  background-color: var(--bg-light);
  padding: 48px 0;
  border-top: 1px solid var(--border-color);
  text-align: center;
  font-size: 0.85rem;
  color: var(--text-secondary);
}

/* ==============================================================================
   Responsive Queries
   ============================================================================== */
@media (max-width: 1024px) {
  .hero-section {
    padding: 0 0 20px 0 !important;
  }
  .hero-motto-header {
    margin-bottom: 16px !important;
  }
  .hero-motto-header .hero-tagline {
    font-size: 1.1rem !important;
  }
  .hero-motto-header .hero-badge {
    margin-bottom: 6px;
  }
  .hero-grid-3 {
    grid-template-columns: 1.1fr 0.9fr; /* 2-Column Split */
    grid-template-areas: 
      "greet pledge"
      "photo pledge";
    gap: 12px 20px;
    align-items: center;
    padding: 0 16px;
  }
  .hero-col-left {
    grid-area: greet;
    padding: 0 !important;
    padding-bottom: 0 !important;
    box-sizing: border-box;
    align-items: flex-start;
    justify-content: flex-end;
  }
  .hero-col-left .hero-title {
    font-size: 1.6rem;
    text-align: left;
    line-height: 1.3;
  }
  .hero-col-center {
    grid-area: photo;
    order: 0;
    margin-bottom: 0;
    justify-content: flex-start;
    align-items: flex-start;
  }
  .candidate-trans-wrap {
    max-width: 200px;
  }
  .candidate-info-overlay {
    bottom: 6px;
    left: 50%;
    padding: 4px 10px;
  }
  .candidate-info-overlay .univ-tag {
    font-size: 0.6rem;
  }
  .candidate-info-overlay .name-tag {
    font-size: 1.15rem;
    letter-spacing: 2px;
  }
  .hero-col-right {
    grid-area: pledge;
    padding: 0 !important;
    padding-bottom: 0 !important;
    box-sizing: border-box;
    align-items: flex-start;
    justify-content: center;
  }
  .hero-col-right .hero-intro {
    font-size: 0.85rem;
    line-height: 1.55;
    margin: 0 0 12px 0;
    max-width: 100%;
    padding: 0;
    text-align: left;
  }
  .hero-actions-vertical {
    margin: 0;
    max-width: 100%;
    gap: 8px;
  }
  .hero-actions-vertical .btn {
    padding: 10px 14px;
    font-size: 0.82rem;
  }
  .chat-wrapper-inline {
    grid-template-columns: 1fr;
    gap: 0;
  }
  .chat-intro-panel {
    border-right: none;
    border-bottom: 1px solid var(--border-color);
    padding: 32px;
  }
  .grid-3 {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 768px) {
  .section {
    padding: 64px 0;
  }
  .grid-2 {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .grid-3 {
    grid-template-columns: 1fr;
  }
  .hero-title {
    font-size: 1.5rem !important;
  }
  .nexus-card h4 {
    font-size: 1.15rem;
  }
  .nav-menu {
    display: none;
    position: absolute;
    top: 80px;
    left: 0;
    width: 100%;
    background-color: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    padding: 24px;
    flex-direction: column;
    align-items: center;
    gap: 16px;
  }
  .nav-menu.active {
    display: flex;
  }
  .nav-toggle {
    display: block;
  }
  .chat-messages-inline {
    padding: 20px;
  }
  .chat-input-inline-form {
    padding: 12px 16px 20px 16px; /* 좌우 패딩을 줄여서 가로 공간 확보 */
  }
  .chat-input-inline-form input {
    height: 48px; /* 높이 명시적 고정으로 버튼과 통일 */
    padding: 0 16px; /* 상하 패딩 대신 가로 패딩만 지정 */
  }
  .chat-send-inline-btn {
    width: 48px;
    height: 48px;
    margin-left: 8px; /* 모바일에서 버튼 간격 좁힘 */
  }
  .candidate-pledge-box {
    padding: 24px;
  }
}

/* ==============================================================================
   Mobile Specific Optimization for N.E.X.U.S Modal Popup (가로폭 최대화)
   ============================================================================== */
@media (max-width: 768px) {
  .nexus-modal {
    width: 94%; /* 화면 양옆에 거의 꽉 차게 변경 */
    border-radius: 16px;
  }
  
  .modal-content {
    padding: 24px; /* 패딩을 줄여 내부 텍스트 영역 가로폭 확보 */
    max-height: 80vh;
  }
  
  .modal-close-btn {
    top: 16px;
    right: 16px;
    width: 32px;
    height: 32px;
    font-size: 1rem;
  }
  
  .modal-header {
    margin-bottom: 20px;
    gap: 12px;
  }
  
  .modal-letter-badge {
    width: 44px;
    height: 44px;
    border-radius: 10px;
    font-size: 1.4rem;
  }
  
  .modal-title {
    font-size: 1.25rem;
    line-height: 1.3;
  }
  
  .modal-subtitle {
    font-size: 0.7rem;
  }
  
  .modal-summary {
    font-size: 0.92rem;
    margin-bottom: 20px;
    padding-left: 12px;
    line-height: 1.5;
  }
  
  .modal-body {
    padding-top: 16px;
  }
  
  .modal-section-title {
    font-size: 0.95rem;
    margin-bottom: 12px;
  }
  
  .modal-details-list {
    gap: 10px;
  }
  
  .modal-details-list li {
    font-size: 0.85rem;
    padding-left: 16px;
    line-height: 1.4;
  }
  
  .modal-details-list li::before {
    left: 4px;
    top: 7px;
    width: 5px;
    height: 5px;
  }
}

/* ==============================================================================
   N.E.X.U.S / G.P.T Modal Strategy Grid (A & I Layout)
   ============================================================================= */
.modal-strategy-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 30px;
  margin-top: 8px;
}

.strategy-col {
  display: flex;
  flex-direction: column;
}

@media (max-width: 768px) {
  .modal-strategy-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }
}

/* ==============================================================================
   KASBA Collaboration Rolling Banner Styles
   ============================================================================== */
.kasba-collab-banner {
  background: rgba(255, 255, 255, 0.88);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-color);
  position: relative;
  z-index: 99;
  width: 100%;
  height: 84px; /* 56px -> 84px 로 확대 */
  display: flex;
  align-items: center;
  margin-top: 80px; /* fixed navbar의 높이(80px)에 정렬 */
  margin-bottom: 0; /* 위의 배너와 5px 간격으로 올리기 위해 축소 */
  overflow: hidden;
  box-shadow: 0 4px 12px rgba(139, 0, 42, 0.03);
}

.banner-container {
  width: 100%;
  max-width: 1200px;
  height: 100%; /* 배너 컨테이너 높이 100% 부여 */
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  gap: 24px;
}

.banner-title {
  display: flex;
  flex-direction: row; /* 세로에서 가로 배열로 배치하여 뱃지와 텍스트 병렬 정렬 */
  align-items: center; /* 세로 정렬 맞춤 */
  gap: 16px;
  flex-shrink: 0;
  height: 100%; /* 세로 전체 상속 */
}

.banner-badge {
  font-family: var(--font-ko);
  font-size: 0.95rem; /* 0.72rem -> 0.95rem 대폭 확대 */
  font-weight: 850;
  color: var(--bg-secondary);
  background-color: var(--color-ku-crimson);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  height: 100%; /* 위아래 다 차도록 세로 확장 */
  padding: 0 20px; /* 좌우 패딩 */
  border-radius: 0; /* 배너에 꽉 맞추기 위해 래디우스 삭제 */
  line-height: 1.3;
  letter-spacing: -0.5px;
}

.banner-title strong {
  font-family: var(--font-ko);
  font-size: 0.85rem;
  color: var(--text-primary);
  font-weight: 700;
  letter-spacing: -0.5px;
}

/* Ticker viewport (2줄이 동시에 정렬되어 보이도록 68px 지정) */
.banner-ticker-container {
  flex-grow: 1;
  height: 68px; /* 68px (2 items * 34px) */
  overflow: hidden;
  position: relative;
  /* 위아래 경계를 자연스럽게 2단 글자에 맞춰 흐리는 마스크 */
  mask-image: linear-gradient(to bottom, transparent 0%, black 15%, black 85%, transparent 100%);
  -webkit-mask-image: linear-gradient(to bottom, transparent 0%, black 15%, black 85%, transparent 100%);
}

.banner-ticker-wrapper {
  position: absolute;
  width: 100%;
  top: 0;
  left: 0;
  transition: transform 0.6s cubic-bezier(0.25, 1, 0.5, 1);
}

.ticker-item {
  height: 34px; /* 한 줄당 34px */
  display: flex;
  align-items: center;
}

.ticker-item a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--text-secondary);
  font-family: var(--font-ko);
  font-size: 0.88rem;
  font-weight: 600; /* 시인성 확보를 위해 미세하게 볼드 처리 */
  letter-spacing: -0.3px;
  transition: color 0.2s ease;
  width: 100%;
  text-decoration: none;
}

.ticker-item a:hover {
  color: var(--color-crimson);
}

.ticker-item a[href]:hover {
  cursor: pointer;
}

.ticker-item a:not([href]) {
  cursor: default;
}

/* 불릿 아이콘 스타일 */
.ticker-bullet {
  color: var(--color-crimson);
  font-size: 0.72rem;
  display: inline-flex;
  align-items: center;
  opacity: 0.85;
}

.ticker-text {
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: calc(100vw - 360px);
}

.link-icon {
  font-size: 0.65rem;
  opacity: 0.5;
}

/* Mobile responsive styling */
@media (max-width: 768px) {
  .kasba-collab-banner {
    margin-top: 80px; /* nav-container height is 80px */
    height: 72px; /* 모바일 높이도 키워 2단 노출 */
    margin-bottom: 0;
  }
  .banner-container {
    gap: 12px;
    padding: 0 16px;
  }
  .banner-title {
    gap: 4px;
  }
  .banner-title strong {
    display: none; /* 모바일은 뱃지만 노출 */
  }
  .banner-ticker-container {
    height: 56px; /* 모바일 2단 높이 (28px * 2) */
  }
  .ticker-item {
    height: 28px;
  }
  .ticker-item a {
    font-size: 0.8rem;
  }
  .ticker-text {
    max-width: calc(100vw - 160px);
  }
}

/* ==============================================================================
   Floating Chat & Message Interface (Professor Lee Dong-won Campaign)
   ============================================================================== */
:root {
  --color-gold-premium: #C5A880;
  --color-crimson-premium: #8B002A;
  --chat-shadow: 0 12px 40px rgba(0, 0, 0, 0.16);
  --chat-shadow-inset: inset 0 2px 4px rgba(0, 0, 0, 0.06);
}

/* Trigger Button */
.floating-chat-trigger {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-crimson-premium) 0%, var(--color-crimson) 100%);
  color: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  cursor: pointer;
  box-shadow: 0 8px 24px rgba(139, 0, 42, 0.35);
  z-index: 1000;
  transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.floating-chat-trigger:hover {
  transform: scale(1.1) translateY(-3px);
  box-shadow: 0 12px 30px rgba(139, 0, 42, 0.45);
}

.floating-chat-trigger:active {
  transform: scale(0.95);
}

.floating-chat-badge-dot {
  position: absolute;
  top: 2px;
  right: 2px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background-color: var(--color-gold-premium);
  border: 2px solid #ffffff;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(197, 168, 128, 0.7); }
  70% { transform: scale(1); box-shadow: 0 0 0 6px rgba(197, 168, 128, 0); }
  100% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(197, 168, 128, 0); }
}

/* Chat Window Box */
.floating-chat-window {
  position: fixed;
  bottom: 105px;
  right: 30px;
  width: 380px;
  height: 580px;
  border-radius: 24px;
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(139, 0, 42, 0.12);
  box-shadow: var(--chat-shadow);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  z-index: 1000;
  
  /* Initial hidden state with smooth scaling transition */
  opacity: 0;
  transform: translateY(20px) scale(0.95);
  visibility: hidden;
  transition: opacity 0.3s cubic-bezier(0.25, 1, 0.5, 1),
              transform 0.3s cubic-bezier(0.25, 1, 0.5, 1),
              visibility 0.3s;
}

.floating-chat-window.active {
  opacity: 1;
  transform: translateY(0) scale(1);
  visibility: visible;
}

/* Chat Window Header */
.floating-chat-header {
  padding: 16px 20px;
  background: linear-gradient(135deg, rgba(139, 0, 42, 0.05) 0%, rgba(0, 32, 91, 0.03) 100%);
  border-bottom: 1px solid rgba(139, 0, 42, 0.08);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.floating-chat-header-info {
  display: flex;
  align-items: center;
  gap: 12px;
}

.avatar-container {
  position: relative;
  width: 42px;
  height: 42px;
}

.floating-chat-avatar {
  width: 100%;
  height: 100%;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid #ffffff;
  box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

.active-dot {
  position: absolute;
  bottom: 0;
  right: 0;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background-color: #2ec4b6;
  border: 2px solid #ffffff;
}

.floating-chat-status-group {
  display: flex;
  flex-direction: column;
}

.floating-chat-name {
  font-family: var(--font-ko);
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-primary);
}

.floating-chat-status {
  font-family: var(--font-ko);
  font-size: 0.72rem;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: 4px;
}

.floating-chat-status::before {
  content: "";
  display: inline-block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: #2ec4b6;
}

.floating-chat-close-btn {
  border: none;
  background: transparent;
  color: var(--text-secondary);
  cursor: pointer;
  font-size: 1rem;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background-color 0.2s;
}

.floating-chat-close-btn:hover {
  background-color: rgba(0, 0, 0, 0.05);
  color: var(--text-primary);
}

/* Chat Body (Message logs) */
.floating-chat-body {
  flex-grow: 1;
  padding: 20px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
  background-color: #fcfdfe;
}

/* Message Bubbles layout */
.chat-bubble-container {
  display: flex;
  flex-direction: column;
  max-width: 85%;
}

.chat-bubble-container.user-bubble {
  align-self: flex-end;
  align-items: flex-end;
}

.chat-bubble-container.professor-bubble {
  align-self: flex-start;
  align-items: flex-start;
}

.chat-bubble-container.system-message {
  align-self: center;
  max-width: 100%;
  margin: 4px 0;
}

.chat-bubble-sender {
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 4px;
  margin-left: 4px;
}

.user-bubble .chat-bubble-sender {
  margin-right: 4px;
  margin-left: 0;
}

.chat-bubble {
  padding: 12px 16px;
  border-radius: 16px;
  font-size: 0.88rem;
  line-height: 1.5;
  font-family: var(--font-ko);
  word-break: break-all;
}

.user-bubble .chat-bubble {
  background-color: var(--color-crimson);
  color: #ffffff;
  border-top-right-radius: 4px;
  box-shadow: 0 4px 10px rgba(139, 0, 42, 0.15);
}

.professor-bubble .chat-bubble {
  background-color: #ffffff;
  color: var(--text-primary);
  border: 1px solid rgba(139, 0, 42, 0.08);
  border-top-left-radius: 4px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.03);
}

.system-time-badge {
  font-size: 0.72rem;
  color: var(--text-secondary);
  background-color: rgba(0, 0, 0, 0.04);
  padding: 4px 10px;
  border-radius: 12px;
}

/* Human Mode Badge for Direct Reply */
.human-badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 0.68rem;
  font-weight: 700;
  color: #8b0000;
  background-color: #fff0f0;
  border: 1px solid rgba(139, 0, 42, 0.25);
  padding: 2px 6px;
  border-radius: 6px;
  margin-bottom: 4px;
}

/* Waiting Indicator */
.loading-indicator {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 12px 16px !important;
  background-color: rgba(0, 0, 0, 0.02) !important;
  border: 1px dashed rgba(0, 0, 0, 0.1) !important;
}

.loading-dot {
  width: 6px;
  height: 6px;
  background-color: var(--text-secondary);
  border-radius: 50%;
  animation: bounce 1.4s infinite ease-in-out both;
}

.loading-dot:nth-child(1) { animation-delay: -0.32s; }
.loading-dot:nth-child(2) { animation-delay: -0.16s; }

@keyframes bounce {
  0%, 80%, 100% { transform: scale(0); }
  40% { transform: scale(1.0); }
}

/* Chat Input Footer Area */
.floating-chat-input-area {
  padding: 16px 20px;
  background-color: #ffffff;
  border-top: 1px solid rgba(139, 0, 42, 0.08);
  display: flex;
  align-items: center;
  gap: 10px;
}

.floating-chat-input-area input {
  flex-grow: 1;
  height: 44px;
  border: 1px solid var(--border-color);
  border-radius: 22px;
  padding: 0 18px;
  font-size: 0.88rem;
  font-family: var(--font-ko);
  outline: none;
  background-color: var(--bg-secondary);
  transition: all 0.2s ease;
  box-shadow: var(--chat-shadow-inset);
}

.floating-chat-input-area input:focus {
  border-color: var(--color-crimson);
  background-color: #ffffff;
  box-shadow: 0 0 0 3px rgba(139, 0, 42, 0.08), var(--chat-shadow-inset);
}

.floating-chat-send-btn {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background-color: var(--color-crimson);
  color: #ffffff;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.95rem;
  transition: all 0.2s ease;
  box-shadow: 0 4px 10px rgba(139, 0, 42, 0.2);
}

.floating-chat-send-btn:hover {
  background-color: var(--color-crimson-premium);
  transform: translateY(-1px);
}

.floating-chat-send-btn:disabled {
  background-color: var(--border-color);
  color: var(--text-light);
  cursor: not-allowed;
  box-shadow: none;
  transform: none;
}

/* Responsive constraints for mobiles */
@media (max-width: 480px) {
  .floating-chat-trigger {
    bottom: 20px;
    right: 20px;
  }
  
  .floating-chat-window {
    bottom: 0;
    right: 0;
    width: 100%;
    height: 100%;
    border-radius: 0;
    z-index: 2000;
  }
  
  .floating-chat-close-btn {
    font-size: 1.2rem;
  }
}