/* ===================================================================
   SHILONG LI - TECH-SAVVY PORTFOLIO DESIGN SYSTEM
   Modern, Sleek, Responsive, Accessible
   =================================================================== */

:root {
  /* Color Palette - Dark Theme (Default) */
  --bg-base: #090d16;
  --bg-surface: #0f1523;
  --bg-surface-elevated: #161e31;
  --bg-glass: rgba(15, 21, 35, 0.75);
  --bg-glass-card: rgba(22, 30, 49, 0.65);
  
  --border-subtle: rgba(255, 255, 255, 0.08);
  --border-hover: rgba(56, 189, 248, 0.35);
  --border-active: #38bdf8;

  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;

  --accent-cyan: #38bdf8;
  --accent-indigo: #818cf8;
  --accent-purple: #c084fc;
  --accent-emerald: #34d399;
  --accent-amber: #fbbf24;
  --accent-rose: #f43f5e;

  --accent-gradient: linear-gradient(135deg, #38bdf8 0%, #818cf8 50%, #c084fc 100%);
  --accent-glow: 0 0 25px rgba(56, 189, 248, 0.25);
  --card-shadow: 0 10px 30px -10px rgba(0, 0, 0, 0.5);

  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-heading: 'Space Grotesk', var(--font-sans);
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 18px;
  --radius-full: 9999px;

  --transition-fast: 0.15s ease;
  --transition-normal: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

[data-theme="light"] {
  --bg-base: #f8fafc;
  --bg-surface: #ffffff;
  --bg-surface-elevated: #f1f5f9;
  --bg-glass: rgba(255, 255, 255, 0.85);
  --bg-glass-card: rgba(255, 255, 255, 0.8);

  --border-subtle: rgba(15, 23, 42, 0.08);
  --border-hover: rgba(2, 132, 199, 0.4);
  --border-active: #0284c7;

  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-muted: #94a3b8;

  --accent-cyan: #0284c7;
  --accent-indigo: #4f46e5;
  --accent-purple: #9333ea;
  --accent-emerald: #059669;
  --accent-amber: #d97706;

  --accent-gradient: linear-gradient(135deg, #0284c7 0%, #4f46e5 50%, #7c3aed 100%);
  --accent-glow: 0 0 20px rgba(2, 132, 199, 0.15);
  --card-shadow: 0 10px 30px -10px rgba(15, 23, 42, 0.08);
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 85px;
  font-size: 16px;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-base);
  color: var(--text-primary);
  line-height: 1.65;
  min-height: 100vh;
  position: relative;
  overflow-x: hidden;
  transition: background-color var(--transition-normal), color var(--transition-normal);
}

/* Subtle Tech Background Grid & Orbs */
.ambient-bg {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: -1;
  overflow: hidden;
}

.ambient-grid {
  position: absolute;
  inset: 0;
  background-image: radial-gradient(var(--border-subtle) 1px, transparent 1px);
  background-size: 32px 32px;
  opacity: 0.6;
}

.ambient-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(120px);
  opacity: 0.18;
}

.orb-1 {
  top: -10%;
  left: 20%;
  width: 500px;
  height: 500px;
  background: var(--accent-cyan);
}

.orb-2 {
  top: 40%;
  right: -5%;
  width: 450px;
  height: 450px;
  background: var(--accent-indigo);
}

.orb-3 {
  bottom: 10%;
  left: 10%;
  width: 400px;
  height: 400px;
  background: var(--accent-purple);
}

/* Layout Container */
.container {
  max-width: 1140px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* Navbar */
.navbar {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--bg-glass);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-subtle);
  transition: all var(--transition-fast);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  text-decoration: none;
  font-family: var(--font-heading);
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text-primary);
}

.brand-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--accent-cyan);
  box-shadow: 0 0 10px var(--accent-cyan);
  display: inline-block;
  animation: pulseDot 2s infinite ease-in-out;
}

@keyframes pulseDot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.4; transform: scale(0.85); }
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  list-style: none;
}

.nav-link {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 500;
  transition: color var(--transition-fast);
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

.nav-link:hover, .nav-link.active {
  color: var(--accent-cyan);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

/* Interactive View Mode Switcher (Recruiter vs Explorer) */
.view-mode-pill {
  display: inline-flex;
  align-items: center;
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-full);
  padding: 3px;
  gap: 2px;
}

.view-mode-btn {
  background: transparent;
  border: none;
  color: var(--text-secondary);
  font-size: 0.85rem;
  font-weight: 600;
  padding: 5px 14px;
  border-radius: var(--radius-full);
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 0.4rem;
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.view-mode-btn:hover {
  color: var(--text-primary);
}

.view-mode-btn.active {
  background: var(--accent-cyan);
  color: #090d16;
  box-shadow: 0 2px 10px rgba(56, 189, 248, 0.4);
}

/* Header Buttons */
.btn-icon {
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  width: 38px;
  height: 38px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.btn-icon:hover {
  color: var(--text-primary);
  border-color: var(--border-hover);
  transform: translateY(-1px);
}

/* Hero Section */
.hero {
  padding: 4.5rem 0 3rem;
  position: relative;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: 3.5rem;
  align-items: center;
}

.status-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.4rem 1rem;
  border-radius: var(--radius-full);
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--accent-emerald);
  margin-bottom: 1.5rem;
}

.status-indicator {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent-emerald);
  box-shadow: 0 0 8px var(--accent-emerald);
}

.hero-title {
  font-family: var(--font-heading);
  font-size: 3.2rem;
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin-bottom: 0.75rem;
}

.gradient-text {
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-ch-name {
  font-size: 1.4rem;
  font-weight: 400;
  color: var(--text-muted);
  margin-left: 0.5rem;
  vertical-align: middle;
}

.hero-tagline-wrapper {
  min-height: 2.4rem;
  margin-bottom: 1rem;
}

.hero-tagline {
  font-family: var(--font-mono);
  font-size: 1.25rem;
  color: var(--accent-cyan);
  font-weight: 500;
  display: inline-block;
}

.typewriter-cursor {
  display: inline-block;
  width: 2px;
  height: 1.2em;
  background: var(--accent-cyan);
  margin-left: 3px;
  vertical-align: middle;
  animation: blink 1s infinite;
}

@keyframes blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0; }
}

.hero-bio {
  font-size: 1.05rem;
  color: var(--text-secondary);
  line-height: 1.7;
  max-width: 640px;
  margin-bottom: 2rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
  align-items: center;
  margin-bottom: 2rem;
}

/* Primary and Secondary Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.55rem;
  padding: 0.65rem 1.35rem;
  border-radius: var(--radius-md);
  font-size: 0.95rem;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  transition: all var(--transition-fast);
  border: 1px solid transparent;
}

.btn-primary {
  background: var(--accent-cyan);
  color: #090d16;
  box-shadow: 0 4px 15px rgba(56, 189, 248, 0.35);
}

.btn-primary:hover {
  filter: brightness(1.1);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(56, 189, 248, 0.5);
}

.btn-secondary {
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  color: var(--text-primary);
}

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

.btn-outline {
  background: transparent;
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
}

.btn-outline:hover {
  border-color: var(--border-hover);
  color: var(--text-primary);
}

/* Social Links Bar */
.social-links {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.social-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  text-decoration: none;
  transition: all var(--transition-fast);
}

.social-link:hover {
  color: var(--accent-cyan);
  border-color: var(--border-hover);
  transform: translateY(-2px);
}

/* Avatar Card */
.avatar-card {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.avatar-wrapper {
  position: relative;
  width: 250px;
  height: 250px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 2px solid var(--border-subtle);
  box-shadow: var(--card-shadow);
  transition: all var(--transition-normal);
}

.avatar-wrapper::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  border: 1px solid rgba(56, 189, 248, 0.25);
  pointer-events: none;
}

.avatar-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.avatar-card:hover .avatar-img {
  transform: scale(1.05);
}

.avatar-badge {
  margin-top: 1rem;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

/* Recruiter Highlights Banner */
.highlights-section {
  padding: 1.5rem 0 3.5rem;
}

.highlights-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.25rem;
}

.highlight-card {
  background: var(--bg-glass-card);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 1.35rem;
  transition: all var(--transition-fast);
}

.highlight-card:hover {
  border-color: var(--border-hover);
  transform: translateY(-3px);
  box-shadow: var(--card-shadow);
}

.highlight-metric {
  font-family: var(--font-heading);
  font-size: 1.85rem;
  font-weight: 800;
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-bottom: 0.35rem;
}

.highlight-label {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.25rem;
}

.highlight-subtext {
  font-size: 0.8rem;
  color: var(--text-muted);
  line-height: 1.4;
}

/* Common Section Header */
.section {
  padding: 4rem 0;
  border-top: 1px solid var(--border-subtle);
}

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

.section-tag {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--accent-cyan);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 0.4rem;
  display: block;
}

.section-title {
  font-family: var(--font-heading);
  font-size: 2.2rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--text-primary);
}

.section-desc {
  font-size: 1rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin-top: 0.5rem;
}

/* Filter Tabs */
.filter-bar {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  margin-bottom: 2rem;
}

.filter-btn {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  padding: 0.45rem 1.15rem;
  border-radius: var(--radius-full);
  font-size: 0.9rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.filter-btn:hover {
  color: var(--text-primary);
  border-color: var(--border-hover);
}

.filter-btn.active {
  background: var(--bg-surface-elevated);
  border-color: var(--accent-cyan);
  color: var(--accent-cyan);
  font-weight: 600;
}

/* Timeline & Experience Cards */
.timeline {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  position: relative;
}

.timeline-card {
  background: var(--bg-glass-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 1.75rem;
  transition: all var(--transition-fast);
  position: relative;
}

.timeline-card:hover {
  border-color: var(--border-hover);
  transform: translateY(-2px);
  box-shadow: var(--card-shadow);
}

.timeline-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 0.85rem;
}

.timeline-role-group h3 {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
}

.timeline-company {
  font-size: 1rem;
  font-weight: 500;
  color: var(--accent-cyan);
  display: inline-block;
  margin-top: 0.2rem;
}

.timeline-meta {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.period-badge {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  padding: 0.25rem 0.65rem;
  border-radius: var(--radius-full);
  color: var(--text-secondary);
}

.current-badge {
  background: rgba(52, 211, 153, 0.15);
  border-color: rgba(52, 211, 153, 0.35);
  color: var(--accent-emerald);
}

.location-badge {
  font-size: 0.85rem;
  color: var(--text-muted);
}

.timeline-summary {
  color: var(--text-secondary);
  font-size: 0.95rem;
  margin-bottom: 1rem;
}

.timeline-bullets {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin-bottom: 1.25rem;
}

.timeline-bullets li {
  position: relative;
  padding-left: 1.5rem;
  color: var(--text-secondary);
  font-size: 0.92rem;
  line-height: 1.55;
}

.timeline-bullets li::before {
  content: "▹";
  position: absolute;
  left: 0;
  color: var(--accent-cyan);
  font-weight: bold;
}

.skill-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
}

.skill-tag {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  padding: 0.2rem 0.6rem;
  border-radius: var(--radius-sm);
}

/* Publications Section */
.publication-card {
  background: var(--bg-glass-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 1.75rem;
  margin-bottom: 1.5rem;
  transition: all var(--transition-fast);
}

.publication-card:hover {
  border-color: var(--border-hover);
  box-shadow: var(--card-shadow);
}

.pub-badge-row {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 0.75rem;
}

.pub-badge {
  background: rgba(56, 189, 248, 0.15);
  color: var(--accent-cyan);
  border: 1px solid rgba(56, 189, 248, 0.3);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 600;
  padding: 0.2rem 0.65rem;
  border-radius: var(--radius-sm);
}

.pub-status {
  font-size: 0.85rem;
  color: var(--text-muted);
}

.pub-title {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
  line-height: 1.4;
}

.pub-authors {
  font-size: 0.95rem;
  color: var(--text-secondary);
  margin-bottom: 0.5rem;
}

.pub-authors strong {
  color: var(--text-primary);
  text-decoration: underline;
  text-decoration-color: var(--accent-cyan);
}

.pub-venue {
  font-style: italic;
  font-size: 0.92rem;
  color: var(--text-muted);
  margin-bottom: 0.85rem;
}

.pub-summary {
  font-size: 0.92rem;
  color: var(--text-secondary);
  margin-bottom: 1.25rem;
  line-height: 1.6;
}

.pub-actions {
  display: flex;
  gap: 0.65rem;
  flex-wrap: wrap;
}

/* Education Cards */
.education-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}

.edu-card {
  background: var(--bg-glass-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 1.75rem;
  transition: all var(--transition-fast);
}

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

.edu-degree {
  font-family: var(--font-heading);
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.35rem;
}

.edu-school {
  font-size: 1rem;
  color: var(--accent-cyan);
  font-weight: 500;
  margin-bottom: 0.5rem;
}

.edu-details {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-top: 0.75rem;
  line-height: 1.5;
}

/* Skills Matrix */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}

.skill-category-card {
  background: var(--bg-glass-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 1.5rem;
}

.skill-category-title {
  font-family: var(--font-heading);
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 1.15rem;
}

.skill-pill-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.skill-pill {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  color: var(--text-primary);
  padding: 0.35rem 0.8rem;
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
}

.skill-pill:hover {
  border-color: var(--accent-cyan);
  color: var(--accent-cyan);
  transform: translateY(-1px);
}

/* Photography Gallery */
.photo-filter-bar {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  margin-bottom: 2rem;
}

.photo-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
}

.photo-card {
  position: relative;
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  aspect-ratio: 4 / 3;
  cursor: pointer;
  transition: all var(--transition-normal);
}

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

.photo-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.photo-card:hover .photo-img {
  transform: scale(1.08);
}

.photo-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(9, 13, 22, 0.9) 0%, rgba(9, 13, 22, 0.2) 60%, transparent 100%);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 1.25rem;
  opacity: 0;
  transition: opacity var(--transition-normal);
}

.photo-card:hover .photo-overlay {
  opacity: 1;
}

.photo-category-pill {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--accent-cyan);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.25rem;
}

.photo-card-title {
  font-family: var(--font-heading);
  font-size: 1.05rem;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 0.2rem;
}

.photo-location-text {
  font-size: 0.8rem;
  color: #cbd5e1;
}

/* Lightbox Modal */
.lightbox-modal {
  position: fixed;
  inset: 0;
  z-index: 100;
  background: rgba(9, 13, 22, 0.95);
  backdrop-filter: blur(12px);
  display: none;
  align-items: center;
  justify-content: center;
  padding: 2rem;
}

.lightbox-modal.active {
  display: flex;
}

.lightbox-content {
  position: relative;
  max-width: 90vw;
  max-height: 85vh;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.lightbox-img-wrapper {
  max-height: 75vh;
  overflow: hidden;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-subtle);
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.7);
}

.lightbox-img {
  max-width: 100%;
  max-height: 75vh;
  object-fit: contain;
  display: block;
}

.lightbox-caption {
  margin-top: 1rem;
  text-align: center;
  color: #e2e8f0;
  max-width: 700px;
}

.lightbox-caption h4 {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  color: #ffffff;
  margin-bottom: 0.25rem;
}

.lightbox-caption p {
  font-size: 0.9rem;
  color: #94a3b8;
}

.lightbox-close {
  position: absolute;
  top: 1.5rem;
  right: 1.5rem;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid var(--border-subtle);
  color: #ffffff;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  transition: all var(--transition-fast);
}

.lightbox-close:hover {
  background: rgba(255, 255, 255, 0.25);
  transform: rotate(90deg);
}

.lightbox-nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid var(--border-subtle);
  color: #ffffff;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  transition: all var(--transition-fast);
}

.lightbox-prev { left: 2rem; }
.lightbox-next { right: 2rem; }

.lightbox-nav:hover {
  background: var(--accent-cyan);
  color: #090d16;
}

/* Fostering & Volunteer Showcase */
.foster-feature-card {
  background: linear-gradient(135deg, rgba(22, 30, 49, 0.8) 0%, rgba(30, 41, 59, 0.6) 100%);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 2.25rem;
  margin-bottom: 2rem;
  display: grid;
  grid-template-columns: 1fr 280px;
  gap: 2rem;
  align-items: center;
}

.foster-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.3rem 0.85rem;
  border-radius: var(--radius-full);
  background: rgba(244, 63, 94, 0.15);
  color: var(--accent-rose);
  border: 1px solid rgba(244, 63, 94, 0.3);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 600;
  margin-bottom: 1rem;
}

.foster-title {
  font-family: var(--font-heading);
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.6rem;
}

.foster-story {
  font-size: 1rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 1.5rem;
}

.foster-stats-box {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.foster-stat-item {
  text-align: center;
}

.foster-stat-val {
  font-family: var(--font-heading);
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--accent-cyan);
}

.foster-stat-lbl {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* Travel & Open Source Grid */
.hobbies-dual-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}

.hobby-box {
  background: var(--bg-glass-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 1.75rem;
}

.hobby-box-title {
  font-family: var(--font-heading);
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.75rem;
}

.hobby-box-desc {
  font-size: 0.95rem;
  color: var(--text-secondary);
  margin-bottom: 1.25rem;
}

.park-tags {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.park-tag-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.9rem;
  color: var(--text-primary);
  background: var(--bg-surface-elevated);
  padding: 0.5rem 0.85rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-subtle);
}

.community-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.community-item h4 {
  font-size: 0.95rem;
  color: var(--accent-cyan);
  margin-bottom: 0.2rem;
}

.community-item p {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

/* Interactive Terminal Modal */
.terminal-modal {
  position: fixed;
  inset: 0;
  z-index: 90;
  background: rgba(9, 13, 22, 0.8);
  backdrop-filter: blur(8px);
  display: none;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
}

.terminal-modal.active {
  display: flex;
}

.terminal-window {
  width: 100%;
  max-width: 680px;
  background: #090d16;
  border: 1px solid rgba(56, 189, 248, 0.3);
  border-radius: var(--radius-md);
  box-shadow: 0 25px 60px -15px rgba(0, 0, 0, 0.8);
  overflow: hidden;
  font-family: var(--font-mono);
}

.terminal-header {
  background: #111827;
  padding: 0.75rem 1rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.terminal-dots {
  display: flex;
  gap: 6px;
}

.terminal-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
}

.dot-red { background: #ef4444; }
.dot-yellow { background: #f59e0b; }
.dot-green { background: #10b981; }

.terminal-title {
  font-size: 0.8rem;
  color: #94a3b8;
}

.terminal-body {
  padding: 1.25rem;
  height: 380px;
  overflow-y: auto;
  font-size: 0.85rem;
  line-height: 1.6;
  color: #e2e8f0;
}

.terminal-output {
  white-space: pre-wrap;
  margin-bottom: 1rem;
}

.terminal-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-bottom: 1rem;
}

.terminal-chip {
  background: rgba(56, 189, 248, 0.1);
  border: 1px solid rgba(56, 189, 248, 0.25);
  color: var(--accent-cyan);
  padding: 0.2rem 0.5rem;
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.terminal-chip:hover {
  background: var(--accent-cyan);
  color: #090d16;
}

.terminal-input-row {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.terminal-prompt {
  color: var(--accent-cyan);
  font-weight: bold;
}

.terminal-input {
  flex: 1;
  background: transparent;
  border: none;
  outline: none;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: #ffffff;
}

/* Floating Terminal Quick Launcher Button */
.terminal-float-btn {
  position: fixed;
  bottom: 1.75rem;
  right: 1.75rem;
  z-index: 40;
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-hover);
  color: var(--accent-cyan);
  font-family: var(--font-mono);
  font-size: 0.85rem;
  padding: 0.65rem 1.15rem;
  border-radius: var(--radius-full);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  transition: all var(--transition-fast);
}

.terminal-float-btn:hover {
  transform: translateY(-2px);
  border-color: var(--accent-cyan);
  box-shadow: 0 6px 25px rgba(56, 189, 248, 0.35);
}

/* Toast Notifications */
.toast-container {
  position: fixed;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: 110;
  pointer-events: none;
}

.toast {
  background: #111827;
  color: #f8fafc;
  border: 1px solid var(--accent-cyan);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-full);
  font-size: 0.9rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  animation: toastIn 0.25s ease-out;
}

@keyframes toastIn {
  from { opacity: 0; transform: translateY(15px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Footer */
.footer {
  padding: 3.5rem 0 2rem;
  border-top: 1px solid var(--border-subtle);
  margin-top: 5rem;
  text-align: center;
}

.footer-motto {
  font-style: italic;
  color: var(--text-muted);
  font-size: 0.95rem;
  margin-bottom: 1rem;
}

.footer-copy {
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* Responsive Media Queries */
@media (max-width: 1024px) {
  .hero-grid {
    grid-template-columns: 1fr;
    text-align: center;
  }
  .hero-actions, .social-links, .status-pill {
    justify-content: center;
  }
  .hero-bio {
    margin-left: auto;
    margin-right: auto;
  }
  .avatar-card {
    order: -1;
    margin-bottom: 1rem;
  }
  .highlights-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .photo-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .foster-feature-card {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
  }
  .hero-title {
    font-size: 2.35rem;
  }
  .hero-tagline {
    font-size: 1.05rem;
  }
  .highlights-grid, .education-grid, .skills-grid, .hobbies-dual-grid {
    grid-template-columns: 1fr;
  }
  .photo-grid {
    grid-template-columns: 1fr;
  }
  .view-mode-pill {
    font-size: 0.75rem;
  }
  .timeline-header {
    flex-direction: column;
  }
}