/* CSS Variables */
:root {
  /* Colors */
  --primary-color: #2563eb;
  --primary-dark: #1d4ed8;
  --secondary-color: #64748b;
  --accent-color: #f59e0b;
  --text-primary: #1e293b;
  --text-secondary: #64748b;
  --text-light: #94a3b8;
  --background-primary: #ffffff;
  --background-secondary: #f8fafc;
  --background-dark: #0f172a;
  --border-color: #e2e8f0;
  --shadow-color: rgba(15, 23, 42, 0.08);
  --shadow-hover: rgba(15, 23, 42, 0.15);

  /* Typography */
  --font-family: "Inter", sans-serif;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 1.875rem;
  --font-size-4xl: 2.25rem;
  --font-size-5xl: 3rem;

  /* Spacing */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  --spacing-3xl: 4rem;

  /* Transitions */
  --transition-fast: 0.15s ease-in-out;
  --transition-normal: 0.3s ease-in-out;
  --transition-slow: 0.5s ease-in-out;

  /* Border Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;

  /* Layout */
  --container-max-width: 1200px;
  --navbar-height: 80px;
}

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

/* Prevent horizontal overflow */
*,
*::before,
*::after {
  max-width: 100%;
}

img,
video,
iframe {
  max-width: 100%;
  height: auto;
}

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

body {
  font-family: var(--font-family);
  line-height: 1.6;
  color: var(--text-primary);
  background-color: var(--background-primary);
  overflow-x: hidden;
  max-width: 100vw;
}

/* Container */
.container {
  max-width: var(--container-max-width);
  width: 100%;
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
  box-sizing: border-box;
}

/* Section Styling */
section {
  padding: var(--spacing-3xl) 0;
}

.section-header {
  text-align: center;
  margin-bottom: var(--spacing-3xl);
}

.section-title {
  font-size: var(--font-size-4xl);
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: var(--spacing-md);
  position: relative;
  display: inline-block;
}

.section-title::after {
  content: "";
  position: absolute;
  bottom: -8px;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 4px;
  background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
  border-radius: var(--radius-sm);
}

.section-subtitle {
  font-size: var(--font-size-lg);
  color: var(--text-secondary);
  font-weight: 400;
}

/* Navigation */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  width: 100%;
  max-width: 100vw;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border-color);
  z-index: 1000;
  transition: var(--transition-normal);
  height: var(--navbar-height);
  box-sizing: border-box;
}

.navbar.scrolled {
  background: rgba(255, 255, 255, 0.98);
  box-shadow: 0 2px 20px var(--shadow-color);
}

.nav-container {
  max-width: var(--container-max-width);
  width: 100%;
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 100%;
  box-sizing: border-box;
}

.nav-logo a {
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--primary-color);
  text-decoration: none;
  transition: var(--transition-fast);
}

.nav-logo a:hover {
  color: var(--primary-dark);
}

.nav-menu {
  display: flex;
  list-style: none;
  gap: var(--spacing-xl);
}

.nav-link {
  text-decoration: none;
  color: var(--text-primary);
  font-weight: 500;
  font-size: var(--font-size-sm);
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-md);
  transition: var(--transition-fast);
  position: relative;
}

.nav-link:hover,
.nav-link.active {
  color: var(--primary-color);
  background-color: rgba(37, 99, 235, 0.1);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  cursor: pointer;
  padding: var(--spacing-sm);
}

.bar {
  width: 25px;
  height: 3px;
  background-color: var(--text-primary);
  margin: 3px 0;
  transition: var(--transition-fast);
  border-radius: var(--radius-sm);
}

/* Hero Section */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  background: linear-gradient(
    135deg,
    var(--background-primary) 0%,
    var(--background-secondary) 100%
  );
  padding-top: var(--navbar-height);
  position: relative;
  overflow: hidden;
}

.hero-background {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 0;
}

.background-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.08;
}

.hero::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(
      circle at 20% 80%,
      rgba(37, 99, 235, 0.08) 0%,
      transparent 50%
    ),
    radial-gradient(
      circle at 80% 20%,
      rgba(245, 158, 11, 0.08) 0%,
      transparent 50%
    );
  pointer-events: none;
  z-index: 1;
}

.hero-container {
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-3xl);
  align-items: center;
  position: relative;
  z-index: 2;
}

.hero-content {
  animation: fadeInLeft 0.8s ease-out;
  padding: var(--spacing-xl);
  background: rgba(255, 255, 255, 0.8);
  border-radius: 20px;
  backdrop-filter: blur(10px);
  border: 1px solid rgba(37, 99, 235, 0.1);
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.05);
}

.hero-title {
  font-size: var(--font-size-5xl);
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: var(--spacing-sm);
  line-height: 1.2;
}

.hero-subtitle {
  font-size: var(--font-size-2xl);
  color: var(--primary-color);
  font-weight: 600;
  margin-bottom: var(--spacing-lg);
}

.hero-description {
  font-size: var(--font-size-lg);
  color: var(--text-secondary);
  margin-bottom: var(--spacing-xl);
  line-height: 1.7;
}

.hero-info {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-xl);
}

.info-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  color: var(--text-secondary);
}

.info-item i {
  color: var(--primary-color);
  width: 20px;
}

.hero-buttons {
  display: flex;
  gap: var(--spacing-lg);
  flex-wrap: wrap;
}

.hero-image {
  display: flex;
  justify-content: center;
  animation: fadeInRight 0.8s ease-out;
}

.profile-card {
  width: min(400px, 90vw);
  height: min(400px, 90vw);
  max-width: 400px;
  object-fit: cover;
  border-radius: 50%;
  box-shadow: 0 10px 40px var(--shadow-color);
  border: 4px solid var(--primary-color);
  transition: var(--transition-normal);
}

.profile-card:hover {
  transform: translateY(-10px) scale(1.02);
  box-shadow: 0 20px 60px var(--shadow-hover);
  border-color: var(--accent-color);
}

.profile-avatar {
  margin-bottom: var(--spacing-lg);
}

.profile-avatar i {
  font-size: 120px;
  color: var(--primary-color);
}

.avatar-image {
  width: min(200px, 45vw);
  height: min(200px, 45vw);
  max-width: 200px;
  border-radius: 50%;
  object-fit: cover;
  border: 4px solid var(--primary-color);
  box-shadow: 0 8px 30px var(--shadow-color);
  transition: var(--transition-normal);
}

.avatar-image:hover {
  transform: scale(1.05);
  box-shadow: 0 12px 40px var(--shadow-hover);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-md) var(--spacing-xl);
  border-radius: var(--radius-md);
  text-decoration: none;
  font-weight: 600;
  font-size: var(--font-size-base);
  transition: var(--transition-normal);
  border: 2px solid transparent;
  cursor: pointer;
  text-align: center;
}

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

.btn-primary:hover {
  background-color: var(--primary-dark);
  border-color: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(37, 99, 235, 0.3);
}

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

.btn-secondary:hover {
  background-color: var(--primary-color);
  color: white;
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(37, 99, 235, 0.2);
}

/* About Section */
.about {
  background-color: var(--background-secondary);
}

.about-content {
  max-width: 800px;
  margin: 0 auto;
}

.about-description {
  font-size: var(--font-size-lg);
  color: var(--text-secondary);
  text-align: center;
  margin-bottom: var(--spacing-2xl);
  line-height: 1.7;
}

.about-highlights {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-xl);
}

.highlight {
  background: var(--background-primary);
  padding: var(--spacing-md);
  border-radius: var(--radius-lg);
  text-align: center;
  box-shadow: 0 4px 15px var(--shadow-color);
  border: 1px solid var(--border-color);
  transition: var(--transition-normal);
}

.highlight:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 30px var(--shadow-hover);
}

.highlight i {
  font-size: var(--font-size-3xl);
  color: var(--primary-color);
  margin-bottom: var(--spacing-md);
}

.highlight h3 {
  font-size: var(--font-size-xl);
  color: var(--text-primary);
  margin-bottom: var(--spacing-sm);
}

.highlight p {
  color: var(--text-secondary);
  line-height: 1.6;
}

/* Skills Section */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-xl);
}

.skill-category {
  background: var(--background-primary);
  padding: var(--spacing-xl);
  border-radius: var(--radius-lg);
  box-shadow: 0 4px 15px var(--shadow-color);
  border: 1px solid var(--border-color);
  transition: var(--transition-normal);
}

.skill-category:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 30px var(--shadow-hover);
}

.category-title {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  font-size: var(--font-size-xl);
  color: var(--text-primary);
  margin-bottom: var(--spacing-lg);
  font-weight: 600;
}

.category-title i {
  color: var(--primary-color);
}

.skills-list {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
}

.skill-tag {
  background: linear-gradient(
    135deg,
    var(--primary-color),
    var(--primary-dark)
  );
  color: white;
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-md);
  font-size: var(--font-size-sm);
  font-weight: 500;
  transition: var(--transition-fast);
}

.skill-tag:hover {
  transform: scale(1.05);
}

/* Experience Section */
.experience {
  background-color: var(--background-secondary);
}

.timeline {
  max-width: 800px;
  margin: 0 auto;
  position: relative;
}

.timeline::before {
  content: "";
  position: absolute;
  left: 30px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--primary-color);
}

.timeline-item {
  position: relative;
  margin-bottom: var(--spacing-2xl);
  padding-left: var(--spacing-3xl);
}

.timeline-marker {
  position: absolute;
  left: 22px;
  top: var(--spacing-sm);
  width: 18px;
  height: 18px;
  background: var(--primary-color);
  border-radius: 50%;
  border: 3px solid var(--background-secondary);
  z-index: 2;
}

.timeline-content {
  background: var(--background-primary);
  padding: var(--spacing-xl);
  border-radius: var(--radius-lg);
  box-shadow: 0 4px 15px var(--shadow-color);
  border: 1px solid var(--border-color);
  transition: var(--transition-normal);
}

.timeline-content:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 30px var(--shadow-hover);
}

.job-title {
  font-size: var(--font-size-xl);
  color: var(--text-primary);
  font-weight: 600;
  margin-bottom: var(--spacing-xs);
}

.company {
  font-size: var(--font-size-lg);
  color: var(--primary-color);
  font-weight: 500;
  margin-bottom: var(--spacing-xs);
}

.period {
  font-size: var(--font-size-sm);
  color: var(--text-light);
  font-weight: 500;
  background: var(--background-secondary);
  padding: var(--spacing-xs) var(--spacing-md);
  border-radius: var(--radius-sm);
  display: inline-block;
  margin-bottom: var(--spacing-md);
}

.achievements {
  list-style: none;
  margin-bottom: var(--spacing-lg);
}

.achievements li {
  position: relative;
  padding-left: var(--spacing-lg);
  margin-bottom: var(--spacing-sm);
  color: var(--text-secondary);
  line-height: 1.6;
}

.achievements li::before {
  content: "▸";
  position: absolute;
  left: 0;
  color: var(--primary-color);
  font-weight: bold;
}

.achievements .inline-link {
  color: var(--primary-color);
  text-decoration: none;
  font-weight: 500;
  transition: var(--transition-fast);
  border-bottom: 1px solid transparent;
}

.achievements .inline-link:hover {
  color: var(--primary-dark);
  border-bottom-color: var(--primary-dark);
}

.key-achievements {
  border-top: 1px solid var(--border-color);
  padding-top: var(--spacing-md);
}

.key-achievements h5 {
  color: var(--accent-color);
  margin-bottom: var(--spacing-sm);
  font-weight: 600;
}

.key-achievements ul {
  list-style: none;
}

.key-achievements li {
  position: relative;
  padding-left: var(--spacing-lg);
  margin-bottom: var(--spacing-sm);
  color: var(--text-secondary);
}

.key-achievements li::before {
  content: "★";
  position: absolute;
  left: 0;
  color: var(--accent-color);
}

/* Projects Section */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(350px, 100%), 1fr));
  gap: var(--spacing-xl);
}

.project-card {
  background: var(--background-primary);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 4px 15px var(--shadow-color);
  border: 1px solid var(--border-color);
  transition: var(--transition-normal);
  position: relative;
  display: flex;
  flex-direction: column;
}

.project-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 12px 40px var(--shadow-hover);
}

.project-card.featured {
  grid-column: span 2;
}

.project-image {
  height: 200px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(
    135deg,
    var(--primary-color),
    var(--primary-dark)
  );
  color: white;
  overflow: hidden;
  position: relative;
}

.project-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-normal);
}

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

.project-image i {
  font-size: var(--font-size-4xl);
}

.project-content {
  padding: var(--spacing-xl);
  display: flex;
  flex-direction: column;
  flex: 1;
}

.project-title {
  font-size: var(--font-size-xl);
  color: var(--text-primary);
  margin-bottom: var(--spacing-md);
  font-weight: 600;
}

.project-description {
  color: var(--text-secondary);
  margin-bottom: var(--spacing-lg);
  line-height: 1.6;
}

.project-tech {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-lg);
}

.tech-tag {
  background: var(--background-secondary);
  color: var(--text-primary);
  padding: var(--spacing-xs) var(--spacing-md);
  border-radius: var(--radius-sm);
  font-size: var(--font-size-xs);
  font-weight: 500;
  border: 1px solid var(--border-color);
}

.project-links {
  display: flex;
  gap: var(--spacing-md);
  margin-top: auto;
  padding-top: var(--spacing-md);
}

.project-link {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  color: var(--primary-color);
  text-decoration: none;
  font-weight: 500;
  font-size: var(--font-size-sm);
  transition: var(--transition-fast);
}

.project-link:hover {
  color: var(--primary-dark);
}

.project-achievement {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  background: linear-gradient(135deg, var(--accent-color), #f59e0b);
  color: white;
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-md);
  font-size: var(--font-size-sm);
  font-weight: 600;
  margin-top: var(--spacing-md);
  display: inline-flex;
}

/* Education Section */
.education {
  background-color: var(--background-secondary);
}

.education-content {
  max-width: 800px;
  margin: 0 auto;
}

.education-card {
  background: var(--background-primary);
  padding: var(--spacing-2xl);
  border-radius: var(--radius-lg);
  box-shadow: 0 4px 15px var(--shadow-color);
  border: 1px solid var(--border-color);
  display: flex;
  gap: var(--spacing-xl);
  transition: var(--transition-normal);
}

.education-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 30px var(--shadow-hover);
}

.education-icon {
  flex-shrink: 0;
}

.education-icon i {
  font-size: var(--font-size-4xl);
  color: var(--primary-color);
}

.education-info {
  flex: 1;
}

.degree {
  font-size: var(--font-size-xl);
  color: var(--text-primary);
  font-weight: 600;
  margin-bottom: var(--spacing-xs);
}

.university {
  font-size: var(--font-size-lg);
  color: var(--primary-color);
  font-weight: 500;
  margin-bottom: var(--spacing-sm);
}

.education-details {
  margin-top: var(--spacing-lg);
}

.awards,
.projects {
  margin-bottom: var(--spacing-lg);
}

.awards h5,
.projects h5 {
  color: var(--text-primary);
  margin-bottom: var(--spacing-md);
  font-weight: 600;
}

.awards ul,
.projects ul {
  list-style: none;
}

.awards li,
.projects li {
  position: relative;
  padding-left: var(--spacing-xl);
  margin-bottom: var(--spacing-sm);
  color: var(--text-secondary);
  line-height: 1.6;
}

.awards li::before {
  position: absolute;
  left: 0;
  width: 20px;
  color: var(--accent-color);
}

/* Contact Section */
.contact-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-3xl);
  max-width: 1000px;
  margin: 0 auto;
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xl);
}

.contact-item {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-lg);
  padding: var(--spacing-lg);
  background: var(--background-primary);
  border-radius: var(--radius-lg);
  box-shadow: 0 4px 15px var(--shadow-color);
  border: 1px solid var(--border-color);
  transition: var(--transition-normal);
}

.contact-item:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 25px var(--shadow-hover);
}

.contact-icon {
  width: 50px;
  height: 50px;
  background: var(--primary-color);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.contact-icon i {
  color: white;
  font-size: var(--font-size-lg);
}

.contact-details h3 {
  color: var(--text-primary);
  font-weight: 600;
  margin-bottom: var(--spacing-xs);
}

.contact-details p {
  color: var(--text-secondary);
}

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

.contact-details a:hover {
  color: var(--primary-dark);
}

.contact-cta {
  background: var(--background-primary);
  padding: var(--spacing-2xl);
  border-radius: var(--radius-lg);
  box-shadow: 0 4px 15px var(--shadow-color);
  border: 1px solid var(--border-color);
  text-align: center;
}

.contact-cta h3 {
  color: var(--text-primary);
  font-size: var(--font-size-2xl);
  margin-bottom: var(--spacing-md);
  font-weight: 600;
}

.contact-cta p {
  color: var(--text-secondary);
  margin-bottom: var(--spacing-xl);
  line-height: 1.6;
}

.cta-buttons {
  display: flex;
  gap: var(--spacing-lg);
  justify-content: center;
  flex-wrap: wrap;
}

/* Footer */
.footer {
  background-color: var(--background-dark);
  color: white;
  padding: var(--spacing-2xl) 0 var(--spacing-lg) 0;
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-lg);
}

.footer-info h3 {
  font-size: var(--font-size-xl);
  margin-bottom: var(--spacing-xs);
}

.footer-info p {
  color: var(--text-light);
}

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

.footer-links a {
  color: var(--text-light);
  text-decoration: none;
  transition: var(--transition-fast);
}

.footer-links a:hover {
  color: white;
}

.divider {
  color: var(--text-light);
}

.footer-bottom {
  text-align: center;
  padding-top: var(--spacing-lg);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-bottom p {
  color: var(--text-light);
  font-size: var(--font-size-sm);
}

/* Scroll to Top Button */
.scroll-to-top {
  position: fixed;
  bottom: var(--spacing-xl);
  right: var(--spacing-xl);
  width: 50px;
  height: 50px;
  background: var(--primary-color);
  color: white;
  border: none;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 15px var(--shadow-color);
  transition: var(--transition-normal);
  opacity: 0;
  visibility: hidden;
  z-index: 1000;
}

.scroll-to-top.show {
  opacity: 1;
  visibility: visible;
}

.scroll-to-top:hover {
  background: var(--primary-dark);
  transform: translateY(-3px);
  box-shadow: 0 8px 25px rgba(37, 99, 235, 0.3);
}

/* Animations */
@keyframes fadeInLeft {
  from {
    opacity: 0;
    transform: translateX(-30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes fadeInRight {
  from {
    opacity: 0;
    transform: translateX(30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Responsive Design */
@media (max-width: 1024px) {
  :root {
    --font-size-5xl: 2.5rem;
    --font-size-4xl: 2rem;
    --font-size-3xl: 1.5rem;
  }

  .hero-container {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .contact-content {
    grid-template-columns: 1fr;
  }

  .project-card.featured {
    grid-column: span 1;
  }

  .education-card {
    flex-direction: column;
    text-align: center;
  }

  .about-highlights {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  :root {
    --spacing-3xl: 2rem;
    --spacing-2xl: 1.5rem;
  }

  .nav-container {
    padding: 0 var(--spacing-md);
  }

  .nav-menu {
    position: fixed;
    top: var(--navbar-height);
    left: -100%;
    width: 100%;
    height: calc(100vh - var(--navbar-height));
    background: var(--background-primary);
    flex-direction: column;
    justify-content: start;
    align-items: center;
    padding: var(--spacing-xl);
    transition: var(--transition-normal);
    box-shadow: 0 2px 20px var(--shadow-color);
  }

  .nav-menu.active {
    left: 0;
  }

  .nav-toggle {
    display: flex;
  }

  .nav-toggle.active .bar:nth-child(2) {
    opacity: 0;
  }

  .nav-toggle.active .bar:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
  }

  .nav-toggle.active .bar:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
  }

  .hero-title {
    font-size: var(--font-size-4xl);
  }

  .hero-buttons {
    justify-content: center;
  }

  .skills-grid,
  .about-highlights,
  .projects-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
  }

  .timeline::before {
    left: 15px;
  }

  .timeline-item {
    padding-left: var(--spacing-2xl);
  }

  .timeline-marker {
    left: 7px;
  }

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

  .cta-buttons {
    flex-direction: column;
    align-items: center;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 var(--spacing-md);
  }

  .nav-container {
    padding: 0 var(--spacing-sm);
  }

  .nav-logo a {
    font-size: var(--font-size-lg);
  }

  .nav-toggle {
    padding: var(--spacing-xs);
  }

  .bar {
    width: 20px;
    height: 2px;
    margin: 2px 0;
  }

  .hero-info {
    align-items: flex-start;
  }

  .profile-card {
    width: min(300px, 80vw);
    height: min(300px, 80vw);
  }

  .profile-avatar i {
    font-size: 80px;
  }

  .avatar-image {
    width: min(150px, 40vw);
    height: min(150px, 40vw);
  }

  .btn {
    padding: var(--spacing-md) var(--spacing-lg);
    font-size: var(--font-size-sm);
  }

  section {
    padding: var(--spacing-2xl) 0;
  }
}

/* Extra Small Mobile Devices */
@media (max-width: 375px) {
  :root {
    --spacing-3xl: 1.5rem;
    --spacing-2xl: 1rem;
    --spacing-xl: 1rem;
  }

  .nav-container {
    padding: 0 var(--spacing-xs);
  }

  .nav-logo a {
    font-size: var(--font-size-md);
  }

  .nav-toggle {
    padding: var(--spacing-xs);
  }

  .bar {
    width: 18px;
    height: 2px;
    margin: 1.5px 0;
  }

  .container {
    padding: 0 var(--spacing-sm);
  }

  .hero-title {
    font-size: var(--font-size-3xl);
    line-height: 1.2;
  }

  .hero-subtitle {
    font-size: var(--font-size-md);
  }
}