/* ============================================================
   MODERN OVERRIDE STYLES
   Layers on top of academic.css without modifying it.
   ============================================================ */

/* ---------- CSS Variables / Color Palette ---------- */
:root {
  --primary: #1e3a5f;
  --primary-light: #2a5a8f;
  --accent: #e07a5f;
  --accent-hover: #c96a50;
  --bg-main: #fafbfc;
  --bg-section-alt: #f0f4f8;
  --bg-card: #ffffff;
  --text-primary: #1a1a2e;
  --text-secondary: #4a5568;
  --text-muted: #718096;
  --border-light: #e2e8f0;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
  --shadow-md: 0 4px 14px rgba(0,0,0,0.08);
  --shadow-lg: 0 10px 30px rgba(0,0,0,0.10);
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --transition: 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

/* ---------- Global / Typography ---------- */
body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif !important;
  color: var(--text-primary) !important;
  background: var(--bg-main) !important;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6,
.navbar-brand {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif !important;
  font-weight: 700 !important;
  color: var(--text-primary) !important;
}

p, li, span, div {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif !important;
}

a {
  color: var(--primary-light) !important;
  transition: color var(--transition) !important;
}

a:hover {
  color: var(--accent) !important;
  text-decoration: none !important;
}

/* ---------- Navbar ---------- */
.navbar {
  background: rgba(255, 255, 255, 0.82) !important;
  backdrop-filter: blur(14px) saturate(180%) !important;
  -webkit-backdrop-filter: blur(14px) saturate(180%) !important;
  border-bottom: 1px solid rgba(0, 0, 0, 0.06) !important;
  box-shadow: none !important;
  padding: 0.7rem 0 !important;
  transition: background var(--transition), box-shadow var(--transition) !important;
}

.navbar-brand {
  font-size: 1.3rem !important;
  font-weight: 800 !important;
  letter-spacing: -0.02em !important;
  color: var(--primary) !important;
}

.navbar .nav-link {
  font-size: 0.9rem !important;
  font-weight: 500 !important;
  color: var(--text-secondary) !important;
  padding: 0.5rem 1rem !important;
  border-radius: var(--radius-sm) !important;
  transition: color var(--transition), background var(--transition) !important;
}

.navbar .nav-link:hover,
.navbar .nav-link.active {
  color: var(--primary) !important;
  background: rgba(30, 58, 95, 0.06) !important;
}

/* ---------- Sections — General Spacing ---------- */
.home-section {
  padding: 80px 0 !important;
  border-bottom: 1px solid var(--border-light);
}

.home-section:last-of-type {
  border-bottom: none;
}

/* Alternating section backgrounds */
#news,
#talks {
  background: var(--bg-section-alt) !important;
}

/* Section headings */
.home-section h1 {
  font-size: 1.85rem !important;
  font-weight: 800 !important;
  letter-spacing: -0.02em !important;
  margin-bottom: 1.5rem !important;
  color: var(--text-primary) !important;
}

.section-heading h1 {
  font-size: 1.85rem !important;
  position: sticky;
  top: 100px;
}

/* ---------- About / Hero Section ---------- */
#about {
  padding-top: 100px !important;
  padding-bottom: 60px !important;
  background: linear-gradient(165deg, #f8faff 0%, var(--bg-main) 100%) !important;
}

#profile {
  text-align: center;
}

.avatar.avatar-circle {
  width: 200px !important;
  height: 200px !important;
  border: 4px solid white !important;
  box-shadow: var(--shadow-lg), 0 0 0 4px rgba(30, 58, 95, 0.08) !important;
  transition: transform var(--transition), box-shadow var(--transition) !important;
}

.avatar.avatar-circle:hover {
  transform: scale(1.03);
  box-shadow: var(--shadow-lg), 0 0 0 6px rgba(30, 58, 95, 0.12) !important;
}

.portrait-title h2 {
  font-size: 1.65rem !important;
  font-weight: 800 !important;
  margin-top: 1rem !important;
  letter-spacing: -0.02em !important;
}

.portrait-title h3 {
  font-size: 0.95rem !important;
  font-weight: 400 !important;
  color: var(--text-secondary) !important;
  line-height: 1.6 !important;
}

/* Social Icons */
.network-icon {
  display: flex !important;
  flex-wrap: wrap !important;
  justify-content: center !important;
  gap: 6px !important;
  margin-top: 1.2rem !important;
  padding: 0 !important;
  list-style: none !important;
}

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

.network-icon a {
  display: inline-flex !important;
  align-items: center !important;
  justify-content: center !important;
  width: 42px !important;
  height: 42px !important;
  border-radius: 50% !important;
  background: var(--bg-section-alt) !important;
  color: var(--text-secondary) !important;
  font-size: 1.1rem !important;
  transition: all var(--transition) !important;
}

.network-icon a:hover {
  background: var(--primary) !important;
  color: white !important;
  transform: translateY(-2px);
  box-shadow: var(--shadow-md) !important;
}

/* Bio text */
#about .col-12.col-lg-8 p {
  font-size: 1rem !important;
  line-height: 1.8 !important;
  color: var(--text-secondary) !important;
}

/* ---------- News Section — Timeline ---------- */
#news ul {
  list-style: none !important;
  padding-left: 0 !important;
  margin-left: 20px !important;
  border-left: 3px solid var(--primary) !important;
  position: relative;
}

#news ul li {
  padding: 0 0 0.8rem 24px !important;
  position: relative;
  margin-bottom: 0 !important;
}

#news ul li::before {
  content: '' !important;
  position: absolute !important;
  left: -8px !important;
  top: 8px !important;
  width: 13px !important;
  height: 13px !important;
  border-radius: 50% !important;
  background: var(--accent) !important;
  border: 3px solid var(--bg-section-alt) !important;
  box-shadow: 0 0 0 2px var(--primary) !important;
}

#news ul li p {
  margin-bottom: 0.2rem !important;
  font-size: 0.95rem !important;
  line-height: 1.6 !important;
}

#news ul li p strong {
  color: var(--primary) !important;
  font-weight: 700 !important;
}

/* ---------- Publications — Card Layout ---------- */
.pub-card {
  display: flex;
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  overflow: hidden;
  margin-bottom: 1.2rem;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition), box-shadow var(--transition);
}

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

.pub-text {
  flex: 1;
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  justify-content: center;
  min-width: 0;
}

.pub-title {
  font-size: 1.08rem;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.5;
  margin-bottom: 0.4rem;
}

.pub-authors {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.5;
  margin-bottom: 0.25rem;
}

.pub-venue {
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--accent);
  margin-bottom: 0.6rem;
}

.pub-image {
  flex: 0 0 260px;
  width: 260px;
  background: var(--bg-section-alt);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.pub-image img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  object-position: center;
  display: block;
  padding: 10px;
}

/* ---------- Buttons ---------- */
.btn-outline-primary,
.btn.btn-outline-primary {
  background: var(--primary) !important;
  color: white !important;
  border: none !important;
  border-radius: var(--radius-lg) !important;
  font-size: 0.8rem !important;
  font-weight: 600 !important;
  padding: 0.35rem 1rem !important;
  transition: all var(--transition) !important;
  box-shadow: none !important;
}

.btn-outline-primary:hover,
.btn.btn-outline-primary:hover {
  background: var(--primary-light) !important;
  color: white !important;
  transform: translateY(-1px);
  box-shadow: var(--shadow-sm) !important;
}

.btn-outline-primary.btn-sm,
.btn.btn-outline-primary.btn-sm {
  font-size: 0.75rem !important;
  padding: 0.3rem 0.85rem !important;
}

/* Btn links row */
.btn-links {
  display: flex !important;
  flex-wrap: wrap !important;
  gap: 6px !important;
  margin-top: 0.6rem !important;
}

.btn-links .btn {
  margin: 0 !important;
}

/* ---------- Talks Section ---------- */
#talks ul {
  list-style: none !important;
  padding-left: 0 !important;
}

#talks ul li {
  padding: 1.2rem 0 !important;
  border-bottom: 1px solid var(--border-light) !important;
}

#talks ul li:last-child {
  border-bottom: none !important;
}

#talks ul li p {
  margin-bottom: 0 !important;
  line-height: 1.7 !important;
}

#talks ul li p strong {
  font-size: 1.02rem !important;
  color: var(--text-primary) !important;
}

#talks ul li p em {
  color: var(--text-muted) !important;
  font-size: 0.92rem !important;
}

/* ---------- Teaching Section ---------- */
#teaching ul {
  list-style: none !important;
  padding-left: 0 !important;
}

#teaching ul li {
  padding: 1rem 0 !important;
  font-size: 0.98rem !important;
  line-height: 1.7 !important;
  color: var(--text-secondary) !important;
}

/* ---------- Awards Section ---------- */
#awards ul {
  list-style: none !important;
  padding-left: 0 !important;
}

#awards ul li {
  padding: 1rem 0 !important;
  border-bottom: 1px solid var(--border-light) !important;
}

#awards ul li:last-child {
  border-bottom: none !important;
}

#awards ul li p {
  margin-bottom: 0 !important;
  line-height: 1.6 !important;
}

#awards ul li p > strong:first-child {
  display: inline-block;
  min-width: 50px;
  color: var(--accent) !important;
  font-weight: 700 !important;
}

/* ---------- Footer ---------- */
.site-footer {
  padding: 2rem 0 !important;
  border-top: 1px solid var(--border-light) !important;
  margin-top: 0 !important;
}

.site-footer .powered-by {
  font-size: 0.85rem !important;
  color: var(--text-muted) !important;
}

.back-to-top {
  color: var(--primary) !important;
  transition: color var(--transition) !important;
}

.back-to-top:hover {
  color: var(--accent) !important;
}

/* ---------- Modal ---------- */
.modal-content {
  border-radius: var(--radius-md) !important;
  border: none !important;
  box-shadow: var(--shadow-lg) !important;
}

.modal-header {
  border-bottom: 1px solid var(--border-light) !important;
}

.modal-footer {
  border-top: 1px solid var(--border-light) !important;
}

/* ---------- Scroll Animations ---------- */
.animate-on-scroll {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s ease-out, transform 0.7s ease-out;
}

.animate-on-scroll.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ---------- Selection Color ---------- */
::selection {
  background: rgba(30, 58, 95, 0.15);
  color: var(--text-primary);
}

/* ---------- Scrollbar (Webkit) ---------- */
::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: var(--bg-main);
}

::-webkit-scrollbar-thumb {
  background: #c1c9d4;
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: #a0aec0;
}

/* ---------- Responsive ---------- */
@media (max-width: 991px) {
  .avatar.avatar-circle {
    width: 160px !important;
    height: 160px !important;
  }

  .home-section {
    padding: 60px 0 !important;
  }

  #about {
    padding-top: 80px !important;
  }

  /* Stack publication cards vertically on tablets */
  .pub-card {
    flex-direction: column;
  }

  .pub-image {
    flex: 0 0 200px;
    width: 100%;
    height: 200px;
    order: -1;
  }
}

@media (max-width: 576px) {
  .home-section h1 {
    font-size: 1.5rem !important;
  }

  .portrait-title h2 {
    font-size: 1.4rem !important;
  }

  .btn-links {
    gap: 4px !important;
  }

  #news ul {
    margin-left: 12px !important;
  }
}