/* ==========================================================================
   DongWoo Goo (구동우) - Modern Interactive CV Stylesheet
   Features: Light/Dark Theme, Executive Typography, Responsive, Print-Ready
   ========================================================================== */

:root {
  /* Color Palette - Light Theme (Monochrome: Black, Gray, White Only) */
  --bg-body: #f9fafb;
  --bg-card: #ffffff;
  --bg-card-subtle: #f3f4f6;
  --bg-card-hover: #e5e7eb;
  --text-primary: #111827;
  --text-secondary: #4b5563;
  --text-muted: #6b7280;
  --border-color: #e5e7eb;
  --border-subtle: #d1d5db;
  
  --primary: #111827;
  --primary-hover: #000000;
  --primary-light: #f3f4f6;
  --primary-text: #111827;
  
  --accent: #4b5563;
  --accent-light: #f3f4f6;
  
  --badge-bg: #f3f4f6;
  --badge-text: #111827;
  --badge-border: #d1d5db;
  
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.08), 0 2px 4px -2px rgb(0 0 0 / 0.05);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.08), 0 4px 6px -4px rgb(0 0 0 / 0.05);
  
  --font-main: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-kr: 'Noto Sans KR', sans-serif;
  --transition: all 0.2s ease;
}

[data-theme="dark"] {
  /* Color Palette - Dark Theme (Monochrome: Black, Gray, White Only) */
  --bg-body: #0a0a0a;
  --bg-card: #141414;
  --bg-card-subtle: #1f1f1f;
  --bg-card-hover: #2a2a2a;
  --text-primary: #ffffff;
  --text-secondary: #d4d4d4;
  --text-muted: #888888;
  --border-color: #262626;
  --border-subtle: #333333;
  
  --primary: #ffffff;
  --primary-hover: #e5e5e5;
  --primary-light: #1f1f1f;
  --primary-text: #ffffff;
  
  --accent: #a3a3a3;
  --accent-light: #1f1f1f;
  
  --badge-bg: #1f1f1f;
  --badge-text: #ffffff;
  --badge-border: #333333;
  
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.5);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.4);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.5);
}

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

body {
  font-family: var(--font-kr), var(--font-main);
  background-color: var(--bg-body);
  color: var(--text-primary);
  line-height: 1.65;
  transition: background-color 0.3s ease, color 0.3s ease;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--text-primary);
  text-decoration: underline;
  text-underline-offset: 3px;
  transition: var(--transition);
}

a:hover {
  color: var(--text-secondary);
}

/* Sticky Action Toolbar */
.cv-toolbar {
  position: sticky;
  top: 64px;
  z-index: 1000;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  background: rgba(var(--bg-body), 0.85);
  border-bottom: 1px solid var(--border-color);
  padding: 0.75rem 1.5rem;
  display: flex;
  justify-content: flex-end;
  align-items: center;
  transition: var(--transition);
}

[data-theme="dark"] .cv-toolbar {
  background: rgba(11, 15, 25, 0.85);
}

[data-theme="light"] .cv-toolbar {
  background: rgba(248, 250, 252, 0.85);
}

.toolbar-left, .toolbar-right {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.btn-tool {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 0.9rem;
  font-size: 0.875rem;
  font-weight: 600;
  border-radius: 0.5rem;
  border: 1px solid var(--border-subtle);
  background-color: var(--bg-card);
  color: var(--text-primary);
  cursor: pointer;
  text-decoration: none;
  transition: var(--transition);
}

.btn-tool:hover {
  background-color: var(--bg-card-subtle);
  border-color: var(--primary);
  color: var(--primary);
  transform: translateY(-1px);
}

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

[data-theme="dark"] .btn-tool.btn-primary {
  color: #0f172a;
}

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

[data-theme="dark"] .btn-tool.btn-primary:hover {
  color: #0f172a;
}

/* Language Switcher Group */
.lang-switch-group {
  display: inline-flex;
  background-color: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: 0.5rem;
  padding: 2px;
  gap: 2px;
}

.btn-lang {
  padding: 0.4rem 0.75rem;
  font-size: 0.8rem;
  font-weight: 700;
  border-radius: 0.35rem;
  border: none;
  background: transparent;
  color: var(--text-muted);
  cursor: pointer;
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
}

.btn-lang:hover {
  color: var(--primary);
}

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

[data-theme="dark"] .btn-lang.active {
  color: #0f172a;
}

/* Bilingual Visibility Rules */
html[data-lang="ko"] .lang-en {
  display: none !important;
}

html[data-lang="en"] .lang-ko {
  display: none !important;
}

/* CV Layout Container */
.cv-container {
  max-width: 960px;
  margin: 2rem auto 4rem auto;
  padding: 0 1.5rem;
}

.cv-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 1rem;
  box-shadow: var(--shadow-lg);
  padding: 3rem;
  position: relative;
  transition: var(--transition);
}

/* Header & Profile Section */
.cv-header {
  display: flex;
  gap: 2rem;
  align-items: center;
  border-bottom: 2px solid var(--border-color);
  padding-bottom: 2.25rem;
  margin-bottom: 2.25rem;
}

.header-avatar {
  flex-shrink: 0;
  position: relative;
}

.header-avatar img {
  width: 130px;
  height: 130px;
  border-radius: 50%;
  object-fit: cover;
  border: 4px solid var(--border-color);
  box-shadow: var(--shadow-md);
  transition: var(--transition);
}

.header-avatar img:hover {
  border-color: var(--primary);
  transform: scale(1.03);
}

.header-info {
  flex: 1;
}

.header-title-row {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 0.35rem;
}

.candidate-name {
  font-size: 2.25rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--text-primary);
  font-family: var(--font-main), var(--font-kr);
}

.candidate-name-kr {
  font-size: 1.35rem;
  font-weight: 600;
  color: var(--text-muted);
}

.candidate-role {
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--primary);
  margin-bottom: 0.6rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.candidate-role .role-company {
  font-weight: 700;
  color: var(--text-primary);
}

.candidate-tagline {
  font-size: 0.95rem;
  color: var(--text-secondary);
  margin-bottom: 1rem;
  line-height: 1.5;
}

/* Contact Badges */
.contact-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem 1.25rem;
  font-size: 0.875rem;
}

.contact-item {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  color: var(--text-secondary);
  text-decoration: none;
  transition: var(--transition);
}

.contact-item i {
  color: var(--primary);
  font-size: 0.95rem;
}

.contact-item a {
  color: var(--text-secondary);
  text-decoration: none;
  transition: var(--transition);
}

.contact-item a:hover {
  color: var(--primary);
  text-decoration: underline;
}

/* Section Common Styling */
.cv-section {
  margin-bottom: 2.5rem;
  break-inside: avoid;
  page-break-inside: avoid;
}

.section-title {
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text-primary);
  text-transform: uppercase;
  display: flex;
  align-items: center;
  gap: 0.6rem;
  margin-bottom: 1.25rem;
  padding-bottom: 0.4rem;
  border-bottom: 2px solid var(--border-color);
}

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

/* Summary Box */
.summary-box {
  background-color: var(--bg-card-subtle);
  border-left: 4px solid var(--primary);
  border-radius: 0.5rem;
  padding: 1.25rem 1.5rem;
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* Timeline & Entry Styling */
.timeline {
  display: flex;
  flex-direction: column;
  gap: 1.75rem;
}

.entry-item {
  position: relative;
  break-inside: avoid;
  page-break-inside: avoid;
}

.entry-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 0.35rem;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.entry-main-info {
  flex: 1;
}

.entry-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-primary);
}

.entry-subtitle {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--primary);
  margin-top: 0.15rem;
}

.entry-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  padding: 0.2rem 0.55rem;
  background-color: var(--badge-bg);
  color: var(--badge-text);
  border: 1px solid var(--badge-border);
  border-radius: 0.375rem;
  font-size: 0.75rem;
  font-weight: 600;
  margin-left: 0.5rem;
}

.entry-date {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-muted);
  white-space: nowrap;
}

.entry-location {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.entry-body {
  margin-top: 0.5rem;
}

.entry-description {
  font-size: 0.925rem;
  color: var(--text-secondary);
  margin-bottom: 0.5rem;
}

.entry-list {
  list-style: none;
  padding-left: 0;
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
}

.entry-list li {
  position: relative;
  padding-left: 1.25rem;
  font-size: 0.925rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

.entry-list li::before {
  content: "•";
  position: absolute;
  left: 0.35rem;
  top: 0;
  color: var(--primary);
  font-weight: bold;
  font-size: 1.1rem;
}

.entry-list li strong {
  color: var(--text-primary);
}

/* Tag Pill Container */
.tags-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-top: 0.6rem;
}

.tech-tag {
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.2rem 0.6rem;
  background-color: var(--bg-card-subtle);
  color: var(--text-secondary);
  border: 1px solid var(--border-color);
  border-radius: 9999px;
  transition: var(--transition);
}

.tech-tag:hover {
  border-color: var(--primary);
  color: var(--primary);
}

/* Skills Grid */
.skills-container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.25rem;
}

.skill-category-card {
  background-color: var(--bg-card-subtle);
  border: 1px solid var(--border-color);
  border-radius: 0.75rem;
  padding: 1.25rem;
  transition: var(--transition);
}

.skill-category-card:hover {
  border-color: var(--border-subtle);
  transform: translateY(-2px);
}

.skill-category-title {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.75rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.skill-category-title i {
  color: var(--primary);
}

.skill-list-items {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

/* Awards & Certifications Table/Grid */
.awards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(380px, 1fr));
  gap: 1rem;
}

.award-card {
  background-color: var(--bg-card-subtle);
  border: 1px solid var(--border-color);
  border-radius: 0.65rem;
  padding: 1rem 1.25rem;
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  transition: var(--transition);
}

.award-card:hover {
  border-color: var(--primary);
}

.award-icon {
  font-size: 1.5rem;
  color: var(--text-primary);
  flex-shrink: 0;
  margin-top: 0.15rem;
}

.award-info h4 {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-primary);
}

.award-info p {
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-top: 0.2rem;
}

.award-info .award-date {
  font-size: 0.78rem;
  color: var(--text-muted);
  font-weight: 600;
}

/* CV Footer */
.cv-footer {
  margin-top: 3rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border-color);
  text-align: center;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.cv-footer a {
  color: var(--primary);
  text-decoration: none;
}

.cv-footer a:hover {
  text-decoration: underline;
}

/* Notification Toast */
.cv-toast {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  background-color: var(--primary);
  color: #ffffff;
  padding: 0.75rem 1.25rem;
  border-radius: 0.5rem;
  box-shadow: var(--shadow-lg);
  font-size: 0.875rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  opacity: 0;
  transform: translateY(1rem);
  pointer-events: none;
  transition: all 0.3s ease;
  z-index: 2000;
}

.cv-toast.show {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

/* ==========================================================================
   PRINT STYLES (@media print)
   Strictly optimized for Clean A4 Output (Always pure white background,
   crisp dark text, hides toolbar, perfect page breaks)
   ========================================================================== */

@media print {
  @page {
    margin: 12mm 15mm 12mm 15mm;
    size: A4 portrait;
  }

  /* Hide interactive elements */
  .cv-toolbar,
  .site-header,
  .site-footer,
  .cv-toast,
  .btn-tool,
  .scroll-indicator,
  .scroll-top {
    display: none !important;
  }

  /* Reset layout for paper */
  body {
    background: #ffffff !important;
    color: #111827 !important;
    font-size: 9.5pt !important;
    line-height: 1.45 !important;
  }

  .cv-container {
    max-width: 100% !important;
    margin: 0 !important;
    padding: 0 !important;
  }

  .cv-card {
    background: #ffffff !important;
    border: none !important;
    box-shadow: none !important;
    padding: 0 !important;
    margin: 0 !important;
    border-radius: 0 !important;
  }

  /* Force light colors on everything */
  .candidate-name {
    color: #111827 !important;
    font-size: 18pt !important;
  }

  .candidate-role {
    color: #111827 !important;
    font-size: 11pt !important;
  }

  .section-title {
    color: #111827 !important;
    border-bottom: 1.5pt solid #111827 !important;
    font-size: 11.5pt !important;
    margin-top: 14pt !important;
    margin-bottom: 8pt !important;
    padding-bottom: 2pt !important;
  }

  .section-title i {
    color: #111827 !important;
  }

  .summary-box {
    background: #f1f5f9 !important;
    border-left: 3pt solid #111827 !important;
    color: #334155 !important;
    padding: 8pt 10pt !important;
    font-size: 9pt !important;
  }

  .entry-title {
    color: #111827 !important;
    font-size: 10.5pt !important;
  }

  .entry-subtitle {
    color: #374151 !important;
    font-size: 9.5pt !important;
  }

  .entry-date {
    color: #475569 !important;
    font-size: 8.5pt !important;
  }

  .entry-list li {
    font-size: 9pt !important;
    color: #334155 !important;
    line-height: 1.4 !important;
  }

  .entry-list li::before {
    color: #111827 !important;
  }

  .entry-badge {
    background: #f1f5f9 !important;
    color: #111827 !important;
    border: 0.5pt solid #cbd5e1 !important;
    font-size: 7.5pt !important;
  }

  .tech-tag {
    background: #f1f5f9 !important;
    color: #334155 !important;
    border: 0.5pt solid #cbd5e1 !important;
    font-size: 7.5pt !important;
    padding: 1pt 4pt !important;
  }

  .skill-category-card,
  .award-card {
    background: #f8fafc !important;
    border: 0.5pt solid #e2e8f0 !important;
    break-inside: avoid !important;
    page-break-inside: avoid !important;
  }

  /* Page break rules */
  .cv-section,
  .entry-item,
  .skill-category-card,
  .award-card {
    break-inside: avoid !important;
    page-break-inside: avoid !important;
  }

  /* Expand link text if helpful, but keep clean */
  a {
    text-decoration: none !important;
    color: inherit !important;
  }
}

/* Responsive */
@media (max-width: 768px) {
  .cv-header {
    flex-direction: column;
    text-align: center;
    gap: 1.25rem;
  }

  .header-avatar img {
    width: 110px;
    height: 110px;
  }

  .header-title-row {
    justify-content: center;
  }

  .contact-list {
    justify-content: center;
  }

  .cv-card {
    padding: 1.75rem 1.25rem;
  }

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

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

  .cv-toolbar {
    padding: 0.6rem 1rem;
  }

  .btn-tool span {
    display: none;
  }

  .btn-tool {
    padding: 0.5rem;
  }

  .btn-lang span {
    display: inline !important;
  }

  .btn-lang {
    padding: 0.35rem 0.55rem;
    font-size: 0.75rem;
  }
}