/* ================================== */
/* GLOBAL STYLES & RESET             */
/* ================================== */

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Roboto', sans-serif;
  background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
  color: #2d3748;
  line-height: 1.6;
}

.container {
  max-width: 1200px;
  margin: 2rem auto;
  padding: 1rem;
  background: white;
  box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
  border-radius: 8px;
}

.section {
  margin-bottom: 2rem;
}

h2 {
  color: #2d3748;
  margin-bottom: 0.5rem;
}

ul {
  list-style: none;
  padding: 0;
}

ul li {
  margin-bottom: 0.75rem;
}

/* ================================== */
/* HEADER STYLES                      */
/* ================================== */

header {
  background: linear-gradient(135deg, #1f2937 0%, #111827 100%);
  color: white;
  padding: 2rem 0;
  text-align: center;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

header h1 {
  font-size: 2.5rem;
  margin: 0;
}

.header-content {
  display: flex;
  justify-content: center;
  align-items: center;
  max-width: 800px;
  margin: 0 auto;
}

.profile-section {
  display: flex;
  align-items: center;
  gap: 2rem;
  text-align: left;
}

.profile-picture {
  width: 120px;
  height: 120px;
  border-radius: 50%;
  object-fit: cover;
  border: 4px solid rgba(255, 255, 255, 0.3);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.profile-picture:hover {
  transform: scale(1.05);
  box-shadow: 0 6px 25px rgba(0, 0, 0, 0.3);
}

.profile-info {
  flex: 1;
}

.profile-info h1 {
  font-size: 2.5rem;
  margin-bottom: 0.5rem;
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.profile-title {
  font-size: 1.2rem;
  margin: 0.5rem 0;
  opacity: 0.95;
  font-weight: 500;
}

.profile-subtitle {
  font-size: 0.95rem;
  margin: 0.5rem 0 0 0;
  opacity: 0.9;
  font-weight: 400;
}

/* ================================== */
/* NAVIGATION STYLES                  */
/* ================================== */

nav {
  position: sticky;
  top: 0;
  background: linear-gradient(135deg, #374151 0%, #1f2937 100%);
  padding: 1rem 0;
  text-align: center;
  z-index: 1000;
  border-bottom: 1px solid #e5e7eb;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

nav a {
  color: white;
  text-decoration: none;
  margin: 0 15px;
  font-weight: bold;
}

nav a:hover {
  text-decoration: underline;
}

/* ================================== */
/* FOOTER STYLES                      */
/* ================================== */

footer {
  text-align: center;
  background: linear-gradient(135deg, #1f2937 0%, #111827 100%);
  color: white;
  padding: 2rem 0;
  margin-top: 3rem;
  box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.1);
}

/* ================================== */
/* PROFESSIONAL SUMMARY SECTION      */
/* ================================== */

.professional-summary {
  background: linear-gradient(135deg, #6b7280 0%, #1d4ed8 100%);
  color: white;
  padding: 2.5rem;
  border-radius: 16px;
  margin-bottom: 3rem;
  text-align: center;
  box-shadow: 0 8px 25px rgba(30, 64, 175, 0.2);
}

.summary-header {
  margin-bottom: 2rem;
}

.summary-title {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.summary-subtitle {
  font-size: 1.2rem;
  opacity: 0.9;
  margin-bottom: 1rem;
}

.summary-location {
  font-size: 1rem;
  opacity: 0.8;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
}

.summary-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 2rem;
  margin-bottom: 2rem;
}

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

.stat-number {
  font-size: 2rem;
  font-weight: 700;
  display: block;
  margin-bottom: 0.5rem;
  color: #fbbf24;
}

.stat-label {
  font-size: 0.9rem;
  opacity: 0.9;
}

.summary-description {
  font-size: 1.1rem;
  line-height: 1.7;
  max-width: 800px;
  margin: 0 auto;
  opacity: 0.95;
  text-align: left;
}

.highlight {
  color: #fbbf24;
  font-weight: 600;
}

/* ================================== */
/* EXPERIENCE SECTION                 */
/* ================================== */

#experience {
  background-color: #f9f9f9;
  padding: 2em;
  border-radius: 10px;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
  margin-top: 2em;
}

.experience-item {
  margin-bottom: 2em;
  border-left: 4px solid #007bff;
  padding-left: 1em;
}

.experience-item h3 {
  color: #244a73;
  font-size: 1.2em;
  margin-bottom: 0.2em;
}

.experience-item ul {
  list-style: disc;
  margin-left: 1.5em;
}

.experience-item ul li {
  color: #555;
  margin-bottom: 0.5em;
}

.experience-item p {
  font-size: 0.9rem;
  color: #666;
}

/* ================================== */
/* EDUCATION SECTION                  */
/* ================================== */

#education {
  background-color: #f9f9f9;
  padding: 2em;
  border-radius: 10px;
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
  margin-bottom: 2em;
}

.education-item {
  margin-bottom: 2em;
}

.education-item h3 {
  color: #007bff;
  font-size: 1.2em;
  margin-bottom: 0.2em;
}

.education-item p {
  font-size: 1em;
  color: #555;
  margin: 0.2em 0;
}

.education-item ul {
  list-style: square;
  margin-left: 1.5em;
}

.education-item ul li {
  color: #555;
  margin-bottom: 0.5em;
}

/* ================================== */
/* PROJECTS SECTION                   */
/* ================================== */

#projects {
  background-color: #f8f9fa;
}

#projects h2 {
  margin-bottom: 30px;
  color: #333;
}

.projects-container {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 20px;
}

.project-card {
  background-color: #ffffff;
  border: 1px solid #ddd;
  padding: 20px;
  border-radius: 10px;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
  transition: transform 0.2s, box-shadow 0.2s;
}

.project-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 15px rgba(0, 0, 0, 0.15);
}

.project-card h3 {
  font-size: 24px;
  color: #244a73;
  margin-bottom: 10px;
}

.project-card p {
  color: #555;
  font-size: 16px;
  line-height: 1.6;
  margin-bottom: 15px;
}

.project-card a {
  display: inline-block;
  color: #fff;
  background-color: #007bff;
  padding: 10px 15px;
  border-radius: 5px;
  text-decoration: none;
  transition: background-color 0.2s;
}

.project-card a:hover {
  background-color: #0056b3;
}

.project-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 0.5rem;
}


/* ================================== */
/* TECHNICAL EXPERTISE SECTION       */
/* ================================== */

.skills-intro {
  text-align: center;
  color: #4a5568;
  font-size: 1.1rem;
  line-height: 1.6;
  margin-bottom: 3rem;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

.skills-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  grid-template-rows: repeat(2, 1fr);
  gap: 2rem;
  margin-top: 2rem;
}

.skill-category {
  background: rgba(255, 255, 255, 0.9);
  border-radius: 16px;
  padding: 2rem;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
  border-left: 4px solid #64748b;
  position: relative;
  transition: all 0.3s ease;
}

.skill-category:hover {
  transform: translateY(-8px);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.12);
}

.skill-category:nth-child(1) {
  border-left-color: #f59e0b;
}

.skill-category:nth-child(2) {
  border-left-color: #10b981;
}

.skill-category:nth-child(3) {
  border-left-color: #3b82f6;
}

.skill-category:nth-child(4) {
  border-left-color: #8b5cf6;
}

.skill-header {
  display: flex;
  align-items: center;
  margin-bottom: 1.5rem;
}

.skill-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-right: 1rem;
  font-size: 1.5rem;
  color: white;
  background: linear-gradient(135deg, #64748b 0%, #475569 100%);
}

.skill-category:nth-child(1) .skill-icon {
  background: linear-gradient(135deg, #f59e0b 0%, #d97706 100%);
}

.skill-category:nth-child(2) .skill-icon {
  background: linear-gradient(135deg, #10b981 0%, #059669 100%);
}

.skill-category:nth-child(3) .skill-icon {
  background: linear-gradient(135deg, #3b82f6 0%, #2563eb 100%);
}

.skill-category:nth-child(4) .skill-icon {
  background: linear-gradient(135deg, #8b5cf6 0%, #7c3aed 100%);
}

.skill-title {
  font-size: 1.3rem;
  font-weight: 600;
  color: #1f2937;
  margin: 0;
}

.skill-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.skill-item {
  display: flex;
  align-items: center;
  padding: 0.75rem 0;
  border-bottom: 1px solid rgba(0, 0, 0, 0.05);
  color: #4b5563;
  font-size: 0.95rem;
  line-height: 1.5;
  transition: all 0.2s ease;
}

.skill-item:last-child {
  border-bottom: none;
}

.skill-item:hover {
  color: #1f2937;
  transform: translateX(5px);
}

.skill-item::before {
  content: '▸';
  color: #64748b;
  font-weight: bold;
  margin-right: 0.75rem;
  transition: color 0.2s ease;
}

.skill-category:nth-child(1) .skill-item:hover::before {
  color: #f59e0b;
}

.skill-category:nth-child(2) .skill-item:hover::before {
  color: #10b981;
}

.skill-category:nth-child(3) .skill-item:hover::before {
  color: #3b82f6;
}

.skill-category:nth-child(4) .skill-item:hover::before {
  color: #8b5cf6;
}

/* ================================== */
/* BOOKS SECTION                      */
/* ================================== */

.books-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
  gap: 2rem;
  margin-top: 2rem;
}

.book-card {
  background: rgba(255, 255, 255, 0.9);
  border-radius: 16px;
  padding: 2rem;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
  border-left: 4px solid #3b82f6;
  display: flex;
  gap: 1.5rem;
  transition: all 0.3s ease;
}

.book-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.12);
}

.book-cover {
  flex-shrink: 0;
  width: 120px;
  height: auto;
}

.book-cover img {
  width: 100%;
  height: auto;
  border-radius: 8px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
  transition: transform 0.3s ease;
}

.book-cover img:hover {
  transform: scale(1.05);
}

.book-content {
  flex: 1;
  display: flex;
  flex-direction: column;
}

.book-title {
  font-size: 1.3rem;
  font-weight: 600;
  color: #1f2937;
  margin: 0 0 0.5rem 0;
  line-height: 1.3;
}

.book-author {
  font-size: 1rem;
  color: #3b82f6;
  font-weight: 500;
  margin-bottom: 0.5rem;
}

.book-year {
  display: inline-block;
  background: rgba(59, 130, 246, 0.1);
  color: #3b82f6;
  padding: 0.2rem 0.6rem;
  border-radius: 10px;
  font-size: 0.8rem;
  font-weight: 500;
  margin-bottom: 1rem;
}

.book-description {
  font-size: 0.95rem;
  color: #4b5563;
  line-height: 1.6;
  margin-bottom: 1.5rem;
  flex-grow: 1;
}

.book-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.book-link {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  padding: 0.5rem 1rem;
  background: linear-gradient(135deg, #3b82f6 0%, #2563eb 100%);
  color: white;
  text-decoration: none;
  border-radius: 20px;
  font-size: 0.85rem;
  font-weight: 500;
  transition: all 0.3s ease;
}

.book-link:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(59, 130, 246, 0.3);
}

.book-link i {
  font-size: 0.8rem;
}

/* ================================== */
/* RESEARCH PAPERS SECTION           */
/* ================================== */

.research-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(380px, 1fr));
  gap: 1.5rem;
  margin-top: 2rem;
}

.research-card {
  background: rgba(255, 255, 255, 0.9);
  border-radius: 12px;
  padding: 1.5rem;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
  border-left: 4px solid #6366f1;
  position: relative;
  transition: all 0.3s ease;
}

.research-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

.research-title {
  font-size: 1.1rem;
  font-weight: 600;
  color: #2d3748;
  margin-bottom: 0.5rem;
  line-height: 1.4;
}

.research-authors {
  font-size: 0.9rem;
  color: #6b7280;
  margin-bottom: 0.3rem;
  font-style: italic;
}

.research-venue {
  font-size: 0.9rem;
  color: #6366f1;
  font-weight: 500;
  margin-bottom: 0.3rem;
}

.research-description {
  font-size: 0.9rem;
  color: #4a5568;
  margin-bottom: 1rem;
  line-height: 1.5;
}

.research-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 1rem;
}

.research-link {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  padding: 0.4rem 0.8rem;
  background: linear-gradient(135deg, #6366f1 0%, #4f46e5 100%);
  color: white;
  text-decoration: none;
  border-radius: 15px;
  font-size: 0.8rem;
  font-weight: 500;
  transition: all 0.3s ease;
}

.research-link:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.research-link i {
  font-size: 0.8rem;
}

.research-year {
  position: absolute;
  top: 1rem;
  right: 1rem;
  background: rgba(99, 102, 241, 0.15);
  color: #6366f1;
  padding: 0.3rem 0.6rem;
  border-radius: 12px;
  font-size: 0.8rem;
  font-weight: 500;
}

.research-type {
  display: inline-block;
  background: rgba(99, 102, 241, 0.1);
  color: #4f46e5;
  padding: 0.2rem 0.6rem;
  border-radius: 10px;
  font-size: 0.75rem;
  font-weight: 500;
  margin-bottom: 0.5rem;
}

/* ================================== */
/* PRESENTATIONS SECTION             */
/* ================================== */

.presentations-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 1.5rem;
  margin-top: 2rem;
}

.presentation-card {
  background: rgba(255, 255, 255, 0.9);
  border-radius: 12px;
  padding: 1.5rem;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
  border-left: 4px solid #6b7280;
  position: relative;
  transition: all 0.3s ease;
}

.presentation-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

.presentation-title {
  font-size: 1.2rem;
  font-weight: 600;
  color: #2d3748;
  margin-bottom: 0.5rem;
  line-height: 1.4;
}

.presentation-venue {
  font-size: 0.95rem;
  color: #6b7280;
  font-weight: 500;
  margin-bottom: 0.3rem;
}

.presentation-year {
  font-size: 0.9rem;
  color: #718096;
  margin-bottom: 1rem;
  font-style: italic;
}

.presentation-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1rem;
}

.presentation-link {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.4rem 0.8rem;
  background: linear-gradient(135deg, #4a5568 0%, #2d3748 100%);
  color: white;
  text-decoration: none;
  border-radius: 20px;
  font-size: 0.85rem;
  font-weight: 500;
  transition: all 0.3s ease;
}

.presentation-link:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.presentation-link i {
  font-size: 0.9rem;
}

/* ================================== */
/* AWARDS SECTION                     */
/* ================================== */

.awards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 1.5rem;
  margin-top: 2rem;
}

.award-card {
  background: rgba(255, 255, 255, 0.9);
  border-radius: 12px;
  padding: 1.5rem;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
  border-left: 4px solid #9ca3af;
  position: relative;
  transition: all 0.3s ease;
}

.award-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

.award-title {
  font-size: 1.1rem;
  font-weight: 600;
  color: #2d3748;
  margin-bottom: 0.5rem;
  line-height: 1.4;
}

.award-organization {
  font-size: 0.9rem;
  color: #6b7280;
  font-weight: 500;
  margin-bottom: 0.3rem;
}

.award-description {
  font-size: 0.9rem;
  color: #4a5568;
  margin-bottom: 1rem;
  line-height: 1.5;
}

.award-link {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.5rem 1rem;
  background: linear-gradient(135deg, #718096 0%, #4a5568 100%);
  color: white;
  text-decoration: none;
  border-radius: 20px;
  font-size: 0.9rem;
  font-weight: 500;
  transition: all 0.3s ease;
}

.award-link:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.award-link i {
  font-size: 0.9rem;
}

.award-year {
  position: absolute;
  top: 1rem;
  right: 1rem;
  background: rgba(107, 114, 128, 0.15);
  color: #6b7280;
  padding: 0.3rem 0.6rem;
  border-radius: 12px;
  font-size: 0.8rem;
  font-weight: 500;
}

/* ================================== */
/* MEDIA COVERAGE SECTION            */
/* ================================== */

.media-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.5rem;
  margin-top: 2rem;
}

.media-card {
  background: rgba(255, 255, 255, 0.9);
  border-radius: 12px;
  padding: 1.5rem;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
  border-left: 4px solid #6b7280;
  position: relative;
  transition: all 0.3s ease;
}

.media-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

.media-title {
  font-size: 1.1rem;
  font-weight: 600;
  color: #2d3748;
  margin-bottom: 0.5rem;
  line-height: 1.4;
}

.media-source {
  font-size: 0.9rem;
  color: #6b7280;
  font-weight: 500;
  margin-bottom: 0.3rem;
}

.media-description {
  font-size: 0.9rem;
  color: #4a5568;
  margin-bottom: 1rem;
  line-height: 1.5;
}

.media-link {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.5rem 1rem;
  background: linear-gradient(135deg, #6b7280 0%, #374151 100%);
  color: white;
  text-decoration: none;
  border-radius: 20px;
  font-size: 0.9rem;
  font-weight: 500;
  transition: all 0.3s ease;
}

.media-link:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.media-link i {
  font-size: 0.9rem;
}

.media-year {
  position: absolute;
  top: 1rem;
  right: 1rem;
  background: rgba(107, 114, 128, 0.15);
  color: #6b7280;
  padding: 0.3rem 0.6rem;
  border-radius: 12px;
  font-size: 0.8rem;
  font-weight: 500;
}

/* ================================== */
/* CONTACT & SOCIAL ICONS SECTION    */
/* ================================== */

.contact-info {
  background: rgba(255, 255, 255, 0.7);
  padding: 1.5rem;
  border-radius: 10px;
  margin-bottom: 2rem;
  text-align: center;
}

.contact-info p {
  margin: 0.5rem 0;
  font-size: 1.1rem;
}

.contact-info a {
  color: #6b7280;
  text-decoration: none;
}

.contact-info a:hover {
  text-decoration: underline;
}

.social-icons {
  display: flex;
  justify-content: center;
  gap: 20px;
  margin-top: 20px;
}

.social-icons a {
  font-size: 30px;
  color: #333;
  text-decoration: none;
  padding: 10px;
  transition: color 0.3s;
}

.social-icons a:hover {
  color: #0077b5;
}

.social-icons a.linkedin:hover {
  color: #0e76a8;
}

.social-icons a.stackoverflow:hover {
  color: #f48024;
}

.social-icons a.blog:hover {
  color: #0a74da;
}

.social-icons a.github:hover {
  color: #333;
}

.social-icons a.email:hover {
  color: #ea4335;
}

/* ================================== */
/* RESPONSIVE DESIGN                  */
/* ================================== */

@media (max-width: 768px) {
  .professional-summary {
    padding: 2rem 1rem;
  }
  
  .summary-title {
    font-size: 1.6rem;
  }
  
  .summary-stats {
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
  }
  
  .stat-number {
    font-size: 1.5rem;
  }
  
  .summary-description {
    font-size: 1rem;
    text-align: center;
  }

  header {
    padding: 1.5rem 0;
  }

  .header-content {
    padding: 0 1rem;
  }

  .profile-section {
    flex-direction: column;
    text-align: center;
    gap: 1.5rem;
  }

  .profile-picture {
    width: 100px;
    height: 100px;
  }

  .profile-info h1 {
    font-size: 2rem;
  }

  .profile-title {
    font-size: 1.1rem;
  }

  .profile-subtitle {
    font-size: 0.9rem;
  }
  
  nav {
    padding: 0.5rem 0;
  }
  
  nav a {
    display: block;
    margin: 0.5rem 0;
    font-size: 0.9rem;
  }
  
  .container {
    margin: 0.5rem auto;
    padding: 1rem;
  }
  
  .section {
    margin-bottom: 1.5rem;
  }

  .skills-grid {
    grid-template-columns: 1fr;
    grid-template-rows: auto;
    gap: 1.5rem;
  }
  
  .skill-category {
    padding: 1.5rem;
  }
  
  .skills-intro {
    font-size: 1rem;
    margin-bottom: 2rem;
  }

  .skill-header {
    margin-bottom: 1rem;
  }

  .skill-icon {
    width: 40px;
    height: 40px;
    font-size: 1.2rem;
  }

  .skill-title {
    font-size: 1.1rem;
  }

  .books-grid {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }
  
  .book-card {
    flex-direction: column;
    text-align: center;
    padding: 1.5rem;
  }
  
  .book-cover {
    align-self: center;
    width: 100px;
  }
  
  .book-links {
    justify-content: center;
  }

  .research-grid {
    grid-template-columns: 1fr;
    gap: 1rem;
  }
  
  .research-card {
    padding: 1rem;
  }
  
  .research-year {
    position: static;
    display: inline-block;
    margin-bottom: 0.5rem;
  }
  
  .research-links {
    gap: 0.3rem;
  }
  
  .research-link {
    font-size: 0.75rem;
    padding: 0.3rem 0.6rem;
  }

  .presentations-grid {
    grid-template-columns: 1fr;
    gap: 1rem;
  }
  
  .presentation-card {
    padding: 1rem;
  }
  
  .presentation-links {
    gap: 0.5rem;
  }
  
  .presentation-link {
    font-size: 0.8rem;
    padding: 0.3rem 0.6rem;
  }

  .awards-grid {
    grid-template-columns: 1fr;
    gap: 1rem;
  }
  
  .award-card {
    padding: 1rem;
  }
  
  .award-year {
    position: static;
    display: inline-block;
    margin-bottom: 0.5rem;
  }

  .media-grid {
    grid-template-columns: 1fr;
    gap: 1rem;
  }
  
  .media-card {
    padding: 1rem;
  }
  
  .media-year {
    position: static;
    display: inline-block;
    margin-bottom: 0.5rem;
  }
  
  .social-icons {
    gap: 15px;
  }
  
  .social-icons a {
    width: 45px;
    height: 45px;
    line-height: 45px;
    font-size: 18px;
  }
}

@media (max-width: 480px) {
  header {
    padding: 1rem 0;
  }
  
  .header-content {
    padding: 0 0.5rem;
  }

  .profile-section {
    gap: 1rem;
  }

  .profile-picture {
    width: 80px;
    height: 80px;
  }

  .profile-info h1 {
    font-size: 1.8rem;
  }

  .profile-title {
    font-size: 1rem;
  }

  .profile-subtitle {
    font-size: 0.85rem;
  }
  
  .container {
    padding: 0.5rem;
  }
  
  .social-icons {
    gap: 10px;
  }
  
  .social-icons a {
    width: 40px;
    height: 40px;
    line-height: 40px;
    font-size: 16px;
  }
}

@media (max-width: 1200px) {
  .container {
    max-width: 95%;
    margin: 1rem auto;
    padding: 1.5rem;
  }
}

@media (min-width: 769px) and (max-width: 1024px) {
  .skills-grid {
    grid-template-columns: repeat(2, 1fr);
    grid-template-rows: repeat(2, 1fr);
    gap: 1.5rem;
  }
  
  .skill-category {
    padding: 1.5rem;
  }
}