@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Outfit:wght@400;500;600;700;800&family=Fira+Code:wght@400;500&display=swap');

:root {
  --primary-color: #4F46E5; /* Indigo 600 */
  --primary-hover: #4338CA;
  --primary-light: rgba(79, 70, 229, 0.08);
  --primary-border: rgba(79, 70, 229, 0.25);
  --secondary-color: #06B6D4; /* Cyan 500 */
  --accent-gradient: linear-gradient(135deg, #4F46E5 0%, #7C3AED 50%, #EC4899 100%);
  
  --bg-color: #F8FAFC;
  --bg-section: #FFFFFF;
  --text-main: #0F172A; /* Slate 900 */
  --text-body: #334155; /* Slate 700 */
  --text-muted: #64748B; /* Slate 500 */
  
  --card-bg: rgba(255, 255, 255, 0.85);
  --card-hover-bg: #FFFFFF;
  --glass-border: rgba(226, 232, 240, 0.8);
  --glass-highlight: rgba(255, 255, 255, 0.6);
  
  --shadow-xs: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-sm: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -1px rgba(0, 0, 0, 0.03);
  --shadow-md: 0 10px 15px -3px rgba(0, 0, 0, 0.05), 0 4px 6px -2px rgba(0, 0, 0, 0.025);
  --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.08), 0 10px 10px -5px rgba(0, 0, 0, 0.03);
  --shadow-hover: 0 20px 25px -5px rgba(79, 70, 229, 0.12), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  
  --radius-xl: 20px;
  --radius-lg: 14px;
  --radius-md: 10px;
  --radius-sm: 6px;
  --radius-full: 9999px;
  
  --transition-fast: 0.15s ease;
  --transition-normal: 0.25s ease;
  --transition-smooth: 0.35s cubic-bezier(0.16, 1, 0.3, 1);
}

/* ==========================================================================
   Base & Typography
   ========================================================================== */
body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif !important;
  color: var(--text-body) !important;
  background-color: var(--bg-color) !important;
  line-height: 1.7 !important;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6,
.navbar-brand,
.portrait-title h2,
.article-title,
.section-heading h1 {
  font-family: 'Outfit', -apple-system, BlinkMacSystemFont, sans-serif !important;
  font-weight: 700 !important;
  color: var(--text-main) !important;
  letter-spacing: -0.025em;
}

p {
  color: var(--text-body) !important;
}

a {
  color: var(--primary-color);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--primary-hover);
  text-decoration: none;
}

/* ==========================================================================
   Navigation Bar
   ========================================================================== */
.navbar {
  background: rgba(255, 255, 255, 0.88) !important;
  backdrop-filter: blur(16px) !important;
  -webkit-backdrop-filter: blur(16px) !important;
  border-bottom: 1px solid var(--glass-border) !important;
  box-shadow: var(--shadow-xs) !important;
  padding: 0.75rem 0 !important;
  transition: all var(--transition-normal);
}

.navbar-brand {
  font-size: 1.45rem !important;
  font-weight: 800 !important;
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline-block;
  padding-left: 0.25rem;
}

.nav-link {
  font-weight: 500 !important;
  font-size: 0.92rem !important;
  color: var(--text-muted) !important;
  padding: 0.5rem 0.85rem !important;
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast) !important;
}

.nav-link:hover {
  color: var(--primary-color) !important;
  background-color: var(--primary-light);
}

.nav-link.active {
  color: var(--primary-color) !important;
  font-weight: 600 !important;
  background-color: var(--primary-light);
}

.navbar-toggler {
  border: 1px solid var(--glass-border) !important;
  border-radius: var(--radius-sm) !important;
  padding: 0.4rem 0.6rem !important;
}

/* ==========================================================================
   Sections Layout
   ========================================================================== */
.home-section {
  background-color: transparent !important;
  padding: 85px 0 !important;
  position: relative;
}

.home-section:nth-of-type(even) {
  background-color: var(--bg-section) !important;
}

.section-heading h1 {
  font-size: 2.2rem !important;
  position: relative;
  display: inline-block;
  margin-bottom: 1.75rem !important;
}

.section-heading h1::after {
  content: '';
  position: absolute;
  width: 48px;
  height: 4px;
  bottom: -8px;
  left: 0;
  background: var(--accent-gradient);
  border-radius: 2px;
}

.section-subheading {
  color: var(--text-muted);
  font-size: 0.95rem;
  margin-top: -1rem;
  margin-bottom: 2rem;
}

/* ==========================================================================
   Profile & About
   ========================================================================== */
#profile {
  text-align: center;
  background: var(--card-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-xl);
  padding: 2rem 1.5rem;
  box-shadow: var(--shadow-sm);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  transition: transform var(--transition-smooth), box-shadow var(--transition-smooth);
}

#profile:hover {
  box-shadow: var(--shadow-md);
}

#profile .portrait {
  width: 170px !important;
  height: 170px !important;
  object-fit: cover !important;
  border-radius: 50% !important;
  box-shadow: var(--shadow-md) !important;
  border: 4px solid #FFFFFF !important;
  transition: transform var(--transition-smooth), box-shadow var(--transition-smooth) !important;
  margin: 0 auto !important;
}

#profile .portrait:hover {
  transform: scale(1.04) translateY(-2px) !important;
  box-shadow: var(--shadow-hover) !important;
}

.portrait-title h2 {
  font-size: 1.75rem !important;
  margin-top: 1rem !important;
  margin-bottom: 0.25rem !important;
}

.portrait-title h3 {
  font-size: 1rem !important;
  color: var(--primary-color) !important;
  font-weight: 600 !important;
  margin-top: 0.25rem !important;
  margin-bottom: 0.25rem !important;
}

.portrait-affiliation {
  font-size: 0.9rem !important;
  color: var(--text-muted) !important;
  margin-top: 0.35rem;
}

.portrait-affiliation a {
  color: var(--text-body) !important;
  font-weight: 500;
}

.portrait-affiliation a:hover {
  color: var(--primary-color) !important;
}

/* Social icons network dock */
ul.network-icon {
  margin-top: 1.5rem !important;
  display: flex !important;
  flex-wrap: wrap !important;
  justify-content: center !important;
  gap: 8px !important;
  padding: 0 !important;
}

.network-icon li {
  margin: 0 !important;
  list-style: none !important;
}

.network-icon li a {
  background: #FFFFFF !important;
  color: var(--text-muted) !important;
  box-shadow: var(--shadow-xs) !important;
  border-radius: var(--radius-md) !important;
  display: flex !important;
  align-items: center !important;
  justify-content: center !important;
  width: 42px !important;
  height: 42px !important;
  transition: all var(--transition-fast) !important;
  border: 1px solid var(--glass-border) !important;
}

.network-icon li a i {
  font-size: 1.15rem !important;
}

.network-icon li a:hover {
  background: var(--primary-color) !important;
  color: #FFFFFF !important;
  transform: translateY(-3px) scale(1.08) !important;
  box-shadow: var(--shadow-hover) !important;
  border-color: var(--primary-color) !important;
}

/* Interest Pills */
.ul-interests {
  padding-left: 0 !important;
  list-style: none !important;
  display: flex !important;
  flex-wrap: wrap !important;
  gap: 8px !important;
}

.ul-interests li {
  background: var(--primary-light) !important;
  color: var(--primary-color) !important;
  font-weight: 500 !important;
  font-size: 0.88rem !important;
  padding: 0.4rem 0.9rem !important;
  border-radius: var(--radius-full) !important;
  border: 1px solid var(--primary-border) !important;
  display: inline-flex !important;
  align-items: center !important;
  transition: all var(--transition-fast) !important;
}

.ul-interests li:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-xs);
  background-color: var(--primary-color) !important;
  color: #FFFFFF !important;
}

/* Education List */
.ul-edu {
  padding-left: 1.5rem !important;
}

.ul-edu li {
  margin-bottom: 1.25rem !important;
  position: relative !important;
}

.ul-edu li i {
  color: var(--primary-color) !important;
}

.ul-edu .description .course {
  margin-bottom: 0.2rem !important;
  font-size: 0.95rem !important;
  color: var(--text-main) !important;
}

.ul-edu .description .institution {
  font-size: 0.88rem !important;
  color: var(--text-muted) !important;
  margin-bottom: 0 !important;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
}

.ul-edu .description .additional_course_information {
  font-size: 0.82rem !important;
  color: var(--primary-color) !important;
  font-weight: 600;
  margin-bottom: 0 !important;
}

/* ==========================================================================
   Publication Section & Card Windows
   ========================================================================== */

/* Filter Controls Toolbar */
.pub-toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 2rem;
  padding: 0.75rem 1rem;
  background: var(--card-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xs);
  backdrop-filter: blur(10px);
}

.pub-filter-group {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.pub-filter-btn {
  background: transparent;
  color: var(--text-muted);
  border: 1px solid transparent;
  font-size: 0.88rem;
  font-weight: 500;
  padding: 0.4rem 1rem;
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: all var(--transition-fast);
}

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

.pub-filter-btn.active {
  background: var(--primary-color);
  color: #FFFFFF !important;
  box-shadow: 0 4px 10px rgba(79, 70, 229, 0.3);
}

.pub-search-box {
  position: relative;
  min-width: 220px;
}

.pub-search-box input {
  width: 100%;
  padding: 0.4rem 1rem 0.4rem 2.2rem;
  font-size: 0.88rem;
  border-radius: var(--radius-full);
  border: 1px solid var(--glass-border);
  background: #FFFFFF;
  color: var(--text-main);
  outline: none;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.pub-search-box input:focus {
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.15);
}

.pub-search-box i {
  position: absolute;
  left: 0.85rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  font-size: 0.85rem;
}

/* Publication Card Window */
.pub-window-card {
  background: var(--card-bg) !important;
  backdrop-filter: blur(12px) !important;
  -webkit-backdrop-filter: blur(12px) !important;
  border: 1px solid var(--glass-border) !important;
  border-radius: var(--radius-xl) !important;
  padding: 1.5rem !important;
  margin-bottom: 1.75rem !important;
  box-shadow: var(--shadow-sm) !important;
  transition: transform var(--transition-smooth), box-shadow var(--transition-smooth), border-color var(--transition-smooth) !important;
  display: flex !important;
  flex-direction: column !important;
  position: relative;
  overflow: hidden;
}

@media (min-width: 768px) {
  .pub-window-card {
    flex-direction: row !important;
    gap: 1.75rem !important;
    align-items: flex-start !important;
  }
}

.pub-window-card:hover {
  transform: translateY(-4px) !important;
  box-shadow: var(--shadow-hover) !important;
  border-color: var(--primary-border) !important;
  background: var(--card-hover-bg) !important;
}

/* Visual Thumbnail Window Column */
.pub-thumb-col {
  width: 100%;
  flex-shrink: 0;
  position: relative;
}

@media (min-width: 768px) {
  .pub-thumb-col {
    width: 250px;
  }
}

.pub-thumb-wrapper {
  position: relative;
  width: 100%;
  height: 160px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: #F1F5F9;
  border: 1px solid var(--glass-border);
  box-shadow: var(--shadow-xs);
}

.pub-thumb-wrapper img {
  width: 100% !important;
  height: 100% !important;
  object-fit: cover !important;
  display: block !important;
  margin: 0 !important;
  transition: transform var(--transition-smooth);
}

.pub-window-card:hover .pub-thumb-wrapper img {
  transform: scale(1.05);
}

/* Floating Venue Badge on Thumbnail */
.pub-venue-badge {
  position: absolute;
  top: 10px;
  left: 10px;
  background: rgba(15, 23, 42, 0.85);
  color: #FFFFFF;
  padding: 3px 10px;
  border-radius: var(--radius-full);
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  backdrop-filter: blur(6px);
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
  z-index: 2;
}

.pub-venue-badge.badge-highlight {
  background: var(--accent-gradient);
}

.pub-venue-badge.badge-journal {
  background: linear-gradient(135deg, #059669, #10B981);
}

/* Publication Content Column */
.pub-content-col {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.pub-title {
  font-size: 1.25rem !important;
  font-weight: 700 !important;
  line-height: 1.4 !important;
  margin-top: 0 !important;
  margin-bottom: 0.5rem !important;
}

.pub-title a {
  color: var(--text-main) !important;
  transition: color var(--transition-fast) !important;
}

.pub-title a:hover {
  color: var(--primary-color) !important;
}

.pub-authors {
  font-size: 0.92rem;
  color: var(--text-muted);
  margin-bottom: 0.5rem;
  line-height: 1.6;
}

.pub-authors .author-highlighted {
  color: var(--primary-color) !important;
  font-weight: 700 !important;
  text-decoration: underline;
  text-decoration-color: rgba(79, 70, 229, 0.4);
  text-underline-offset: 3px;
}

.pub-venue-text {
  font-size: 0.9rem;
  color: var(--text-body);
  font-weight: 600;
  margin-bottom: 0.6rem;
  display: flex;
  align-items: center;
  gap: 6px;
}

.pub-venue-text i {
  color: var(--primary-color);
  font-size: 0.85rem;
}

.pub-description {
  font-size: 0.9rem !important;
  color: var(--text-muted) !important;
  line-height: 1.6 !important;
  margin-bottom: 0.85rem !important;
}

/* Button Pill Group */
.pub-btn-group {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: auto;
}

.btn-pub {
  display: inline-flex !important;
  align-items: center !important;
  gap: 6px !important;
  padding: 0.35rem 0.95rem !important;
  font-size: 0.82rem !important;
  font-weight: 600 !important;
  border-radius: var(--radius-full) !important;
  border: 1px solid var(--glass-border) !important;
  background: #FFFFFF !important;
  color: var(--text-body) !important;
  box-shadow: var(--shadow-xs) !important;
  transition: all var(--transition-fast) !important;
  cursor: pointer;
  text-decoration: none !important;
}

.btn-pub i {
  font-size: 0.85rem;
  transition: transform var(--transition-fast);
}

.btn-pub:hover {
  background: var(--primary-color) !important;
  color: #FFFFFF !important;
  border-color: var(--primary-color) !important;
  transform: translateY(-2px);
  box-shadow: 0 4px 10px rgba(79, 70, 229, 0.25) !important;
}

.btn-pub:hover i {
  transform: scale(1.1);
}

.btn-pub-primary {
  background: var(--primary-light) !important;
  color: var(--primary-color) !important;
  border-color: var(--primary-border) !important;
}

.btn-pub-primary:hover {
  background: var(--primary-color) !important;
  color: #FFFFFF !important;
}

.btn-pub-accent {
  background: var(--accent-gradient) !important;
  color: #FFFFFF !important;
  border: none !important;
  box-shadow: 0 2px 8px rgba(79, 70, 229, 0.3) !important;
}

.btn-pub-accent:hover {
  opacity: 0.95;
  transform: translateY(-2px);
  box-shadow: 0 6px 14px rgba(79, 70, 229, 0.4) !important;
}

/* Template Helper Window */
.pub-template-box {
  background: rgba(79, 70, 229, 0.04);
  border: 2px dashed var(--primary-border);
  border-radius: var(--radius-xl);
  padding: 1.5rem;
  text-align: center;
  margin-top: 2.5rem;
  transition: all var(--transition-normal);
}

.pub-template-box:hover {
  background: rgba(79, 70, 229, 0.08);
  border-color: var(--primary-color);
}

.pub-template-box h4 {
  font-size: 1.15rem;
  color: var(--primary-color);
  margin-bottom: 0.5rem;
}

.pub-template-box p {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-bottom: 1rem;
}

/* ==========================================================================
   Projects Section
   ========================================================================== */
#projects .col-md-4 {
  display: flex;
  margin-bottom: 1.5rem;
}

.project-card,
.custom-project-card {
  width: 100% !important;
  max-width: 100% !important;
  min-width: 0 !important;
  box-sizing: border-box !important;
  background: var(--card-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-xl);
  padding: 1.75rem;
  height: 100%;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-sm);
  backdrop-filter: blur(10px);
  transition: transform var(--transition-smooth), box-shadow var(--transition-smooth), border-color var(--transition-smooth);
}

.project-card:hover,
.custom-project-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
  border-color: var(--primary-border);
}

.project-card .card-icon,
.custom-project-card .card-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-lg);
  background: var(--primary-light);
  color: var(--primary-color);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.35rem;
  margin-bottom: 1.25rem;
  border: 1px solid var(--primary-border);
  flex-shrink: 0;
}

.project-card h3,
.custom-project-card h3 {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
  white-space: normal !important;
  word-break: normal !important;
  overflow-wrap: break-word !important;
  color: var(--text-main);
  line-height: 1.35;
}

.project-card p,
.custom-project-card p {
  font-size: 0.9rem;
  color: var(--text-muted);
  flex-grow: 1;
  line-height: 1.6;
  white-space: normal !important;
  word-break: normal !important;
  overflow-wrap: break-word !important;
  margin-bottom: 1rem;
}

.project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: auto;
  margin-bottom: 1.25rem;
}

.project-tag {
  font-size: 0.75rem;
  font-weight: 600;
  padding: 2px 8px;
  border-radius: var(--radius-sm);
  background: var(--primary-light);
  color: var(--primary-color);
}

/* ==========================================================================
   Experience Timeline
   ========================================================================== */
.experience-timeline {
  position: relative;
  padding-left: 2rem;
}

.experience-timeline::before {
  content: '';
  position: absolute;
  left: 7px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: linear-gradient(to bottom, var(--primary-color), rgba(79, 70, 229, 0.15));
  border-radius: 1px;
}

.exp-item {
  position: relative;
  margin-bottom: 2rem;
}

.exp-item:last-child {
  margin-bottom: 0;
}

.exp-dot {
  position: absolute;
  left: -2rem;
  top: 6px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: #FFFFFF;
  border: 3px solid var(--primary-color);
  box-shadow: 0 0 0 4px var(--primary-light);
  transition: transform var(--transition-fast);
}

.exp-item:hover .exp-dot {
  transform: scale(1.25);
  background: var(--primary-color);
}

.exp-card {
  background: var(--card-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  padding: 1.25rem 1.5rem;
  box-shadow: var(--shadow-sm);
  backdrop-filter: blur(8px);
  transition: transform var(--transition-smooth), box-shadow var(--transition-smooth);
}

.exp-card:hover {
  transform: translateX(4px);
  box-shadow: var(--shadow-md);
  border-color: var(--primary-border);
}

.exp-mini-logo {
  height: 22px;
  max-width: 52px;
  object-fit: contain;
  vertical-align: middle;
  background: transparent;
  padding: 0;
  display: inline-block;
  border: none;
  box-shadow: none;
  flex-shrink: 0;
  transition: transform var(--transition-fast);
}

.exp-card:hover .exp-mini-logo {
  transform: scale(1.08);
}

body.dark .exp-mini-logo {
  background: transparent;
  border: none;
  box-shadow: none;
}

.edu-mini-logo {
  height: 22px;
  max-width: 52px;
  object-fit: contain;
  vertical-align: middle;
  margin-left: 8px;
  margin-right: 0;
  background: transparent;
  padding: 0;
  display: inline-block;
  border: none;
  box-shadow: none;
  transition: transform var(--transition-fast);
}

body.dark .edu-mini-logo {
  background: transparent;
  border: none;
  box-shadow: none;
}

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

.exp-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-main);
  margin: 0;
}

.exp-period {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--primary-color);
  background: var(--primary-light);
  padding: 2px 10px;
  border-radius: var(--radius-full);
}

.exp-company {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-body);
  margin-bottom: 0.35rem;
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.exp-company a {
  color: inherit;
  transition: color var(--transition-fast);
}

.exp-company a:hover {
  color: var(--primary-color);
}

.exp-location {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 0.75rem;
}

.exp-bullets {
  margin: 0;
  padding-left: 1.2rem;
  font-size: 0.9rem;
  color: var(--text-muted);
}

.exp-bullets li {
  margin-bottom: 0.35rem;
}

/* ==========================================================================
   Academic Service & Mentoring
   ========================================================================== */
.service-card {
  background: var(--card-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  box-shadow: var(--shadow-sm);
  backdrop-filter: blur(8px);
  margin-bottom: 1.25rem;
  transition: transform var(--transition-smooth), box-shadow var(--transition-smooth);
}

.service-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

.service-card h4 {
  font-size: 1.05rem;
  color: var(--text-main);
  margin-bottom: 0.5rem;
  display: flex;
  align-items: center;
  gap: 8px;
}

.service-card h4 i {
  color: var(--primary-color);
}

.service-card p {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-bottom: 0;
}

/* ==========================================================================
   Contact & Location
   ========================================================================== */
.contact-item {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1rem;
  background: var(--card-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  margin-bottom: 1rem;
  box-shadow: var(--shadow-xs);
  transition: all var(--transition-fast);
}

.contact-item:hover {
  transform: translateX(4px);
  box-shadow: var(--shadow-sm);
  border-color: var(--primary-border);
}

.contact-icon {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--primary-light);
  color: var(--primary-color);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  flex-shrink: 0;
}

.contact-text h5 {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin: 0 0 2px 0;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.contact-text a, .contact-text span {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-main);
}

/* ==========================================================================
   BibTeX Modal & Toast
   ========================================================================== */
.modal-content {
  border-radius: var(--radius-xl) !important;
  border: 1px solid var(--glass-border) !important;
  box-shadow: var(--shadow-lg) !important;
  backdrop-filter: blur(20px) !important;
  background: rgba(255, 255, 255, 0.95) !important;
}

.modal-header {
  border-bottom: 1px solid var(--glass-border) !important;
  padding: 1.25rem 1.5rem !important;
}

.modal-title {
  font-size: 1.25rem !important;
  font-weight: 700 !important;
}

.modal-body {
  padding: 1.5rem !important;
}

.modal-body pre {
  background: #0F172A !important;
  color: #E2E8F0 !important;
  border-radius: var(--radius-md) !important;
  padding: 1.25rem !important;
  font-family: 'Fira Code', monospace !important;
  font-size: 0.85rem !important;
  line-height: 1.5 !important;
  overflow-x: auto;
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.modal-footer {
  border-top: 1px solid var(--glass-border) !important;
  padding: 1rem 1.5rem !important;
}

/* Toast notification */
.copy-toast {
  position: fixed;
  bottom: 30px;
  right: 30px;
  background: #0F172A;
  color: #FFFFFF;
  padding: 12px 22px;
  border-radius: var(--radius-full);
  box-shadow: var(--shadow-lg);
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.9rem;
  font-weight: 500;
  z-index: 99999;
  opacity: 0;
  transform: translateY(20px);
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  pointer-events: none;
}

.copy-toast.show {
  opacity: 1;
  transform: translateY(0);
}

.copy-toast i {
  color: #10B981;
}

/* ==========================================================================
   Dark Mode Overrides
   ========================================================================== */
body.dark {
  --bg-color: #0B0F19;
  --bg-section: #111827;
  --text-main: #F8FAFC !important;
  --text-body: #CBD5E1 !important;
  --text-muted: #94A3B8 !important;
  
  --card-bg: rgba(17, 24, 39, 0.8);
  --card-hover-bg: #1F2937;
  --glass-border: rgba(255, 255, 255, 0.08);
  --glass-highlight: rgba(255, 255, 255, 0.05);
  
  --primary-color: #818CF8; /* Lighter indigo */
  --primary-hover: #A5B4FC;
  --primary-light: rgba(129, 140, 248, 0.12);
  --primary-border: rgba(129, 140, 248, 0.3);
  
  --shadow-sm: 0 4px 6px -1px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 10px 15px -3px rgba(0, 0, 0, 0.4);
  --shadow-hover: 0 20px 25px -5px rgba(0, 0, 0, 0.6);
}

body.dark .navbar {
  background: rgba(11, 15, 25, 0.88) !important;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08) !important;
}

body.dark .pub-search-box input {
  background: #111827;
  border-color: rgba(255, 255, 255, 0.1);
  color: #F8FAFC;
}

body.dark .btn-pub {
  background: #1F2937 !important;
  color: #E2E8F0 !important;
  border-color: rgba(255, 255, 255, 0.1) !important;
}

body.dark .btn-pub:hover {
  background: var(--primary-color) !important;
  color: #0F172A !important;
  border-color: var(--primary-color) !important;
}

body.dark .btn-pub-primary {
  background: var(--primary-light) !important;
  color: var(--primary-color) !important;
}

body.dark .pub-thumb-wrapper {
  background: #1F2937;
  border-color: rgba(255, 255, 255, 0.08);
}

body.dark .network-icon li a {
  background: #1F2937 !important;
  border-color: rgba(255, 255, 255, 0.08) !important;
  color: #94A3B8 !important;
}

body.dark .network-icon li a:hover {
  background: var(--primary-color) !important;
  color: #0F172A !important;
}

body.dark #profile {
  background: var(--card-bg);
  border-color: rgba(255, 255, 255, 0.08);
}

body.dark #profile .portrait {
  border-color: #1F2937 !important;
}

body.dark .modal-content {
  background: rgba(17, 24, 39, 0.95) !important;
  border-color: rgba(255, 255, 255, 0.1) !important;
}

body.dark .exp-dot {
  background: #111827;
}

body.dark .contact-item {
  background: var(--card-bg);
  border-color: rgba(255, 255, 255, 0.08);
}