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

html {
  font-size: var(--font-size-sm);
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-primary);
  font-size: var(--font-size-base);
  line-height: var(--line-height-normal);
  color: var(--color-text-primary);
  background-color: var(--color-background);
  min-height: 100vh;
  overflow-x: hidden;
}

/* ===== TYPOGRAPHY ===== */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-primary);
  font-weight: var(--font-weight-semibold);
  line-height: var(--line-height-tight);
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-md);
}

h1 {
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-bold);
}

h2 {
  font-size: var(--font-size-2xl);
}

h3 {
  font-size: var(--font-size-2xl);
}

h4 {
  font-size: var(--font-size-lg);
}

p {
  margin-bottom: var(--spacing-md);
  line-height: var(--line-height-relaxed);
}

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

a:hover {
  color: var(--color-link-hover);
  text-decoration: underline;
}

a:focus-visible {
  outline: var(--border-thickness-sm) solid var(--color-primary);
  outline-offset: 2px;
  border-radius: var(--border-radius-sm);
}

/* ===== COMPONENTS ===== */

/* Note styling */
.note-paragraph {
  margin-top: var(--spacing-lg);
  padding: var(--spacing-md);
  background-color: var(--color-note-paragraph-bg);
  border-left: var(--border-thickness-md) solid var(--color-note-border);
  border-radius: var(--border-radius-sm);
  font-size: var(--font-size-sm);
  line-height: var(--line-height-relaxed);
}

.note-label {
  color: var(--color-note);
  font-weight: var(--font-weight-bold);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-xs) var(--spacing-md);
  font-family: var(--font-primary);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  line-height: var(--line-height-tight);
  text-align: center;
  text-decoration: none;
  border: var(--btn-border-width) solid transparent;
  border-radius: var(--border-radius-md);
  cursor: pointer;
  transition: all var(--transition-normal);
  user-select: none;
  vertical-align: middle;
  width: 100%; /* Make buttons full width of container */
  max-width: 200px; /* But limit max width */
}

.btn:focus-visible {
  outline: var(--border-thickness-xs) solid var(--color-primary);
  outline-offset: 1px;
}

.btn-primary {
  color: var(--color-text-inverse);
  background-color: var(--color-primary);
  border-color: var(--color-primary);
}

.btn-primary:hover {
  background-color: var(--color-link-hover);
  border-color: var(--color-link-hover);
  text-decoration: none;
}

.btn-secondary {
  color: var(--color-text-primary);
  background-color: transparent;
  border-color: var(--color-border);
}

.btn-secondary:hover {
  background-color: var(--color-surface);
  border-color: var(--color-text-light);
  text-decoration: none;
}

/* Navigation */
.navbar {
  position: sticky;
  top: 0;
  z-index: var(--z-sticky);
  background-color: var(--navbar-background);
  box-shadow: var(--navbar-shadow);
  height: var(--navbar-height);
  display: flex;
  align-items: center;
}

.navbar-brand {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
}

.logo {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-primary);
  text-decoration: none;
  margin-right: auto;
}

.logo:hover {
  text-decoration: none;
}

.nav-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2rem;
  height: 2rem;
  background: none;
  border: none;
  cursor: pointer;
  color: var(--color-text-primary);
  margin-left: var(--spacing-md);
}

.hamburger {
  position: relative;
  display: block;
  width: 1.25rem;
  height: 1px;
  background-color: currentColor;
  border-radius: var(--border-radius-full);
}

.hamburger::before,
.hamburger::after {
  content: '';
  position: absolute;
  width: 100%;
  height: 1px;
  background-color: currentColor;
  border-radius: var(--border-radius-full);
  left: 0;
  transition: transform var(--transition-normal);
}

.hamburger::before {
  top: -0.375rem;
}

.hamburger::after {
  bottom: -0.375rem;
}

.navbar-menu {
  display: none;
  flex-direction: column;
  width: 100%;
}

.navbar-menu.active {
  display: flex;
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background-color: var(--navbar-background);
  box-shadow: var(--shadow-md);
  padding: var(--spacing-sm) var(--container-padding);
}

.nav-list {
  display: flex;
  flex-direction: column;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-link {
  display: block;
  padding: var(--spacing-xs) var(--spacing-sm);
  color: var(--color-text-primary);
  font-weight: var(--font-weight-medium);
  text-decoration: none;
  transition: color var(--transition-fast);
  border-radius: var(--border-radius-sm);
  font-size: var(--font-size-sm);
  background-color: var(--color-surface);
}

.nav-link:hover {
  color: var(--color-primary);
  text-decoration: none;
  background-color: var(--color-surface);
}

/* Social links */
.social-links {
  display: flex;
  gap: var(--spacing-sm);
  margin-top: var(--spacing-sm);
}

.social-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2rem;
  height: 2rem;
  color: var(--color-text-secondary);
  border-radius: 50%;
  transition: all var(--transition-fast);
}

.social-link:hover {
  color: var(--color-primary);
  background-color: var(--color-surface);
  text-decoration: none;
}

.social-link i {
  font-size: var(--font-size-lg);
}

/* Publication components - NO BORDERS */
.publication {
  /* border: var(--publication-border); REMOVED BORDER */
  border-radius: var(--border-radius-md);
  background-color: var(--color-background);
  transition: var(--publication-transition);
  padding: var(--publication-padding) !important;
  margin-bottom: var(--publication-margin-bottom) !important;
}

.publication:hover {
  box-shadow: var(--publication-shadow-hover);
  /* border-color: var(--color-border-hover); REMOVED */
}

.publication-title {
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--spacing-xs);
  color: var(--color-text-primary);
  line-height: var(--line-height-tight);
}

.publication-authors {
  margin-bottom: var(--spacing-xs);
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
  line-height: var(--line-height-tight);
}

.publication-authors .author-self {
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
}

.publication-authors .author-link {
  color: var(--color-text-secondary);
}

.publication-authors .author-link:hover {
  color: var(--color-primary);
}

.publication-venue {
  margin-bottom: var(--spacing-sm);
  color: var(--color-text-secondary);
  font-size: var(--font-size-xs);
  line-height: var(--line-height-tight);
  font-style: italic;
}

.publication-note {
  color: var(--color-text-light);
  font-style: italic;
  margin-left: var(--spacing-xs);
  font-size: var(--font-size-xs);
  font-style: normal;
}

/* Awards inline with venue */
.publication-awards-inline {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  margin-left: var(--spacing-xs);
}

.award-inline {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  padding: 0.125rem 0.375rem;
  background-color: var(--color-award-bg);
  border: var(--border-thickness-xs) solid var(--color-award-border);
  border-radius: var(--border-radius-full);
  color: var(--color-award-text);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-medium);
  line-height: var(--line-height-tight);
  text-decoration: none;
  transition: all var(--transition-fast);
  font-style: normal;
}

.award-inline:hover {
  background-color: var(--color-award-bg);
  color: var(--color-award-text);
  text-decoration: none;
}

.award-inline i {
  color: var(--color-award-icon);
  font-size: var(--icon-size-sm);
}

.publication-links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-xs);
  margin-bottom: var(--spacing-xs);
}

.resource-link {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: 0.125rem var(--spacing-xs);
  background-color: var(--color-surface);
  border-radius: var(--border-radius-sm);
  color: var(--color-text-secondary);
  font-size: var(--font-size-xs);
  text-decoration: none;
  transition: all var(--transition-fast);
  line-height: var(--line-height-tight);
}

.resource-link:hover {
  background-color: var(--color-primary);
  border-color: var(--color-primary);
  color: var(--color-text-inverse);
  text-decoration: none;
}

.resource-link i {
  font-size: var(--icon-size-sm);
}

/* Publication images */
.publication-media {
  display: flex;
  flex-direction: row;
  flex-wrap: nowrap;
  gap: var(--spacing-xs);
  justify-content: flex-end;
}

.publication-media img + img {
  margin-left: var(--spacing-xs);
}

/* Institution components */
.institution-link {
  color: var(--color-link);
  text-decoration: none;
  font-weight: var(--font-weight-medium);
  font-size: var(--font-size-sm);
}

.institution-link:hover {
  color: var(--color-link-hover);
  text-decoration: underline;
}

/* Collaborator links */
.collaborator-link {
  color: var(--color-text-primary);
  font-weight: var(--font-weight-medium);
  text-decoration: underline;
  text-decoration-color: var(--text-decoration-color);
  text-decoration-thickness: var(--text-underline-thickness);
  text-underline-offset: var(--text-underline-offset);
}

.collaborator-link:hover {
  color: var(--color-primary);
  text-decoration-thickness: var(--text-underline-thickness-hover);
}

/* Education and Experience items */
.edu-thesis,
.edu-supervisors,
.exp-department,
.exp-note {
  font-size: var(--font-size-sm);
  line-height: var(--line-height-tight);
  margin-top: var(--spacing-xs);
  color: var(--color-text-secondary);
}

.edu-thesis strong,
.edu-supervisors strong,
.exp-note strong {
  color: var(--color-text-primary);
  font-weight: var(--font-weight-medium);
}

.edu-supervisors .collaborator-link,
.exp-note .collaborator-link {
  color: var(--color-text-secondary);
  font-weight: var(--font-weight-light);
  text-decoration: underline;
  text-decoration-color: var(--color-link);
  text-decoration-thickness: var(--text-underline-thickness);
  text-underline-offset: var(--text-underline-offset);
  transition: all var(--transition-fast);
  cursor: pointer;
}

.edu-supervisors .collaborator-link:hover,
.exp-note .collaborator-link:hover {
  color: var(--color-link);
  text-decoration-thickness: var(--text-underline-thickness-hover);
}

.thesis-link {
  color: var(--color-text-primary);
  font-weight: var(--font-weight-light);
  text-decoration: underline;
  text-decoration-color: var(--color-link);
  text-decoration-thickness: var(--text-underline-thickness);
  text-underline-offset: var(--text-underline-offset);
  transition: all var(--transition-fast);
}

.thesis-link:hover {
  color: var(--color-link);
  text-decoration-thickness: var(--text-underline-thickness-hover);
}

.edu-thesis .thesis-link {
  color: var(--color-text-secondary);
  font-weight: var(--font-weight-light);
  /* font-style: italic; */
}

/* Service items */
.service-item {
  font-size: var(--font-size-sm);
  line-height: var(--line-height-tight);
  color: var(--color-text-secondary);
  display: block;
  flex-wrap: nowrap;
  align-items: baseline;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-xs);
  width: 100%;
}

.service-conference {
  font-weight: var(--font-weight-medium);
  color: var(--color-text-primary);
  flex: 1;
  min-width: 0;
}

.service-years {
  font-weight: var(--font-weight-medium);
  color: var(--color-text-secondary);
  font-size: var(--font-size-xs);
  flex-shrink: 0;
  display: inline;
}

.service-note {
  font-size: var(--font-size-xs);
  color: var(--color-text-secondary);
  font-style: italic;
  flex-basis: 100%;
  margin-top: 0.125rem;
  margin-left: 0;
}

/* Footer */
.footer {
  background-color: var(--color-surface);
  padding: var(--spacing-md) 0;
  margin-top: var(--spacing-lg);
  border-top: var(--border-thickness-xs) solid var(--color-border);
}

.footer-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-sm);
  text-align: center;
}

.footer-copyright {
  color: var(--color-text-secondary);
  font-size: var(--font-size-xs);
}

.footer-links {
  display: flex;
  gap: var(--spacing-md);
}

.footer-link {
  color: var(--color-text-secondary);
  font-size: var(--font-size-xs);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
}

.footer-link:hover {
  color: var(--color-primary);
  text-decoration: none;
}

/* Back to top */
.back-to-top {
  position: fixed;
  bottom: var(--spacing-md);
  right: var(--spacing-md);
  width: 2.5rem;
  height: 2.5rem;
  background-color: var(--color-primary);
  color: var(--color-text-inverse);
  border: none;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transform: translateY(1rem);
  transition: all var(--transition-normal);
  z-index: var(--z-fixed);
  font-size: var(--font-size-sm);
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top:hover {
  background-color: var(--color-link-hover);
}

/* Error message */
.error-message {
  position: fixed;
  top: var(--spacing-md);
  right: var(--spacing-md);
  left: var(--spacing-md);
  max-width: 350px;
  margin: 0 auto;
  background-color: var(--color-error);
  color: white;
  padding: var(--spacing-sm);
  border-radius: var(--border-radius-md);
  box-shadow: var(--shadow-md);
  z-index: var(--z-modal);
  animation: slideIn 0.3s ease;
  font-size: var(--font-size-sm);
}

.error-content {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
}

.error-content i {
  font-size: var(--font-size-base);
}

@keyframes slideIn {
  from {
    transform: translateY(-100%);
    opacity: 0;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}

/* ===== SIMPLIFIED UTILITY CLASSES ===== */

/* Display */
.hidden { display: none; }
.block { display: block; }

/* Flexbox - Only essential ones */
.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }

/* Text alignment */
.text-center { text-align: center; }

/* Simple spacing - Only what's actually used */
.mb-0 { margin-bottom: 0 !important; }
.mb-1 { margin-bottom: var(--spacing-sm) !important; }
.mb-2 { margin-bottom: var(--spacing-md) !important; }

.p-0 { padding: 0 !important; }

/* Responsive utilities */
@media (min-width: 768px) {
  .md-flex { display: flex; }
  .md-grid { display: grid; }
}

@media (max-width: 767px) {
  .sm-block { display: block; }
}