/* ===================================
   CSS Variables - VS Code Theme
   =================================== */
:root {
  /* VS Code Dark Theme Colors */
  --bg-primary: #1e1e1e;
  --bg-secondary: #252526;
  --bg-tertiary: #2d2d30;
  --bg-elevated: #313131;
  
  --text-primary: #d4d4d4;
  --text-secondary: #858585;
  --text-muted: #6a6a6a;
  
  --accent-blue: #007acc;
  --accent-blue-hover: #0098ff;
  --accent-orange: #ce9178;
  --accent-green: #4ec9b0;
  --accent-purple: #c586c0;
  --accent-yellow: #dcdcaa;
  
  --border-color: #3e3e42;
  --shadow: rgba(0, 0, 0, 0.5);
  
  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 2rem;
  --spacing-lg: 4rem;
  --spacing-xl: 6rem;
  
  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;
}

/* Light Theme */
[data-theme="light"] {
  --bg-primary: #ffffff;
  --bg-secondary: #f3f3f3;
  --bg-tertiary: #e8e8e8;
  --bg-elevated: #f5f5f5;
  
  --text-primary: #1e1e1e;
  --text-secondary: #616161;
  --text-muted: #888888;
  
  --accent-blue: #0066cc;
  --accent-blue-hover: #005bb5;
  --accent-orange: #a65d00;
  --accent-green: #008080;
  --accent-purple: #a31acc;
  --accent-yellow: #b58900;
  
  --border-color: #d4d4d4;
  --shadow: rgba(0, 0, 0, 0.1);
}

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

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

body {
  font-family: 'Poppins', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  transition: background-color var(--transition-normal), color var(--transition-normal);
  overflow-x: hidden;
}

::selection {
  background-color: var(--accent-blue);
  color: #ffffff;
}

/* ===================================
   Typography
   =================================== */
h1, h2, h3, h4, h5, h6 {
  font-weight: 600;
  line-height: 1.2;
  margin-bottom: 1rem;
}

h1 { font-size: clamp(2rem, 5vw, 3.5rem); }
h2 { font-size: clamp(1.75rem, 4vw, 2.5rem); }
h3 { font-size: clamp(1.25rem, 3vw, 1.75rem); }
h4 { font-size: 1.25rem; }

p {
  margin-bottom: 1rem;
}

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

a:hover {
  color: var(--accent-blue-hover);
}

/* ===================================
   Layout
   =================================== */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

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

/* ===================================
   Theme Toggle Button
   =================================== */
.theme-toggle {
  position: fixed;
  top: 20px;
  right: 20px;
  z-index: 9999;
  background: var(--bg-elevated);
  border: 2px solid var(--border-color);
  width: 50px;
  height: 50px;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-normal);
  box-shadow: 0 4px 20px var(--shadow);
}

.theme-toggle:hover {
  transform: rotate(180deg) scale(1.1);
  border-color: var(--accent-blue);
}

.theme-toggle svg {
  width: 24px;
  height: 24px;
  color: var(--text-primary);
  transition: all var(--transition-fast);
}

.theme-toggle .sun-icon {
  display: none;
}

.theme-toggle .moon-icon {
  display: block;
}

[data-theme="light"] .theme-toggle .sun-icon {
  display: block;
}

[data-theme="light"] .theme-toggle .moon-icon {
  display: none;
}

/* ===================================
   Navigation
   =================================== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  background: rgba(30, 30, 30, 0.95);
  backdrop-filter: blur(10px);
  z-index: 1000;
  border-bottom: 1px solid var(--border-color);
  transition: all var(--transition-normal);
}

[data-theme="light"] .navbar {
  background: rgba(255, 255, 255, 0.95);
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 95px;
}

.nav-logo img {
  height: 95px;
  width: auto;
  transition: transform var(--transition-fast);
  vertical-align: middle;
}

.nav-logo:hover img {
  transform: scale(1.05);
}

.nav-menu {
  display: flex;
  list-style: none;
  gap: var(--spacing-md);
  align-items: center;
}

.nav-link {
  color: var(--text-primary);
  font-weight: 500;
  padding: 0.5rem 1rem;
  position: relative;
  transition: color var(--transition-fast);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  width: 0;
  height: 2px;
  background: var(--accent-blue);
  transform: translateX(-50%);
  transition: width var(--transition-fast);
}

.nav-link:hover::after {
  width: 80%;
}

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
}

.hamburger span {
  width: 25px;
  height: 3px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: all var(--transition-fast);
}

/* ===================================
   Hero Section
   =================================== */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding-top: 70px;
  position: relative;
  background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
}

.hero-container {
  max-width: 1200px;
  width: 100%;
  padding: 0 var(--spacing-md);
}

.hero-content {
  text-align: center;
  max-width: 800px;
  margin: 0 auto;
}

.hero-logo {
  margin-bottom: var(--spacing-md);
}

.hero-logo img {
  max-width: 400px;
  width: 100%;
  height: auto;
  filter: drop-shadow(0 10px 30px var(--shadow));
}

.hero-title {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 700;
  margin-bottom: var(--spacing-sm);
  background: linear-gradient(135deg, var(--accent-blue) 0%, var(--accent-green) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: clamp(1rem, 2.5vw, 1.5rem);
  color: var(--text-secondary);
  font-weight: 500;
  margin-bottom: var(--spacing-md);
}

.hero-description {
  font-size: 1.1rem;
  color: var(--text-secondary);
  margin-bottom: var(--spacing-md);
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
}

.hero-links {
  margin-bottom: var(--spacing-md);
}

.hero-cv-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 0.75rem 1.5rem;
  background: var(--bg-elevated);
  border: 2px solid var(--border-color);
  border-radius: 8px;
  color: var(--text-primary);
  font-weight: 500;
  transition: all var(--transition-fast);
  text-decoration: none;
}

.hero-cv-link:hover {
  border-color: var(--accent-blue);
  background: var(--bg-secondary);
  color: var(--accent-blue);
  transform: translateY(-2px);
}

.hero-cv-link svg {
  flex-shrink: 0;
}

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

/* ===================================
   Buttons
   =================================== */
.btn {
  display: inline-block;
  padding: 0.875rem 2rem;
  border-radius: 8px;
  font-weight: 600;
  font-size: 1rem;
  text-align: center;
  cursor: pointer;
  transition: all var(--transition-fast);
  border: 2px solid transparent;
  position: relative;
  overflow: hidden;
}

.btn::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.1);
  transform: translate(-50%, -50%);
  transition: width var(--transition-normal), height var(--transition-normal);
}

.btn:hover::before {
  width: 300px;
  height: 300px;
}

.btn-primary {
  background: var(--accent-blue);
  color: #ffffff;
}

.btn-primary:hover {
  background: var(--accent-blue-hover);
  transform: translateY(-2px);
  box-shadow: 0 10px 25px rgba(0, 122, 204, 0.3);
}

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

.btn-secondary:hover {
  background: var(--bg-elevated);
  border-color: var(--accent-blue);
  transform: translateY(-2px);
}

.btn-large {
  padding: 1.125rem 2.5rem;
  font-size: 1.125rem;
}

/* ===================================
   Scroll Indicator
   =================================== */
.scroll-indicator {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  color: var(--text-secondary);
  font-size: 0.875rem;
  text-transform: uppercase;
  letter-spacing: 2px;
}

.mouse {
  width: 24px;
  height: 40px;
  border: 2px solid var(--border-color);
  border-radius: 15px;
  display: flex;
  justify-content: center;
  padding-top: 8px;
}

.wheel {
  width: 3px;
  height: 8px;
  background: var(--accent-blue);
  border-radius: 2px;
  animation: scroll 1.5s infinite;
}

@keyframes scroll {
  0% {
    opacity: 1;
    transform: translateY(0);
  }
  100% {
    opacity: 0;
    transform: translateY(12px);
  }
}

/* ===================================
   Section Titles
   =================================== */
.section-title {
  text-align: center;
  margin-bottom: var(--spacing-sm);
  position: relative;
  display: block;
  width: 100%;
}

.section-title::after {
  content: '';
  position: absolute;
  bottom: -10px;
  left: 50%;
  transform: translateX(-50%);
  width: 80px;
  height: 4px;
  background: linear-gradient(90deg, var(--accent-blue) 0%, var(--accent-green) 100%);
  border-radius: 2px;
}

.section-subtitle {
  text-align: center;
  color: var(--text-secondary);
  font-size: 1.1rem;
  margin-bottom: var(--spacing-lg);
}

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

.about-text {
  max-width: 900px;
  margin: 0 auto;
  font-size: 1.1rem;
}

.about-text .lead {
  font-size: 1.25rem;
  margin-bottom: var(--spacing-md);
}

/* LinkedIn Badge */
.linkedin-section {
  margin-top: var(--spacing-lg);
  text-align: center;
}

.linkedin-badge {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 1rem 2rem;
  background: #0077b5;
  color: #ffffff;
  border-radius: 12px;
  font-weight: 600;
  font-size: 1.1rem;
  transition: all var(--transition-normal);
  box-shadow: 0 4px 15px rgba(0, 119, 181, 0.3);
  text-decoration: none;
}

.linkedin-badge:hover {
  background: #005885;
  transform: translateY(-3px);
  box-shadow: 0 8px 25px rgba(0, 119, 181, 0.5);
  color: #ffffff;
}

.linkedin-badge svg {
  flex-shrink: 0;
}

.linkedin-badge .arrow-icon {
  transition: transform var(--transition-fast);
}

.linkedin-badge:hover .arrow-icon {
  transform: translate(3px, -3px);
}

.linkedin-note {
  margin-top: var(--spacing-sm);
  font-size: 0.875rem;
  color: var(--text-muted);
  font-style: italic;
}

.about-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--spacing-md);
  margin-top: var(--spacing-lg);
}

.stat-item {
  text-align: center;
  padding: var(--spacing-md);
  background: var(--bg-elevated);
  border-radius: 12px;
  border: 1px solid var(--border-color);
  transition: all var(--transition-normal);
}

.stat-item:hover {
  transform: translateY(-5px);
  border-color: var(--accent-blue);
  box-shadow: 0 10px 30px var(--shadow);
}

.stat-number {
  font-size: 2.5rem;
  font-weight: 700;
  background: linear-gradient(135deg, var(--accent-blue) 0%, var(--accent-green) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 0.5rem;
}

.stat-label {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

/* ===================================
   Projects Section
   =================================== */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: var(--spacing-md);
  margin-top: var(--spacing-lg);
}

.project-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: var(--spacing-md);
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

/* Project Image */
.project-image {
  position: relative;
  width: calc(100% + var(--spacing-md) * 2);
  margin: calc(var(--spacing-md) * -1);
  margin-bottom: var(--spacing-md);
  overflow: hidden;
  border-radius: 16px 16px 0 0;
  aspect-ratio: 16/9;
}

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

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

.project-image-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(180deg, transparent 0%, rgba(0, 0, 0, 0.7) 100%);
  display: flex;
  align-items: flex-end;
  padding: var(--spacing-md);
  opacity: 0;
  transition: opacity var(--transition-normal);
}

.project-card:hover .project-image-overlay {
  opacity: 1;
}

.project-image-overlay .project-icon {
  background: var(--accent-blue);
  border-radius: 12px;
  width: 60px;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
}

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

.project-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, var(--accent-blue) 0%, var(--accent-green) 100%);
  transform: scaleX(0);
  transition: transform var(--transition-normal);
}

.project-card:hover::before {
  transform: scaleX(1);
}

.project-card:hover {
  transform: translateY(-8px);
  border-color: var(--accent-blue);
  box-shadow: 0 15px 40px var(--shadow);
}

.project-card.featured {
  grid-column: span 2;
  background: linear-gradient(135deg, rgba(0, 122, 204, 0.1) 0%, rgba(78, 201, 176, 0.1) 100%);
}

.project-card.full-width {
  grid-column: 1 / -1;
}

.project-icon {
  width: 60px;
  height: 60px;
  background: var(--bg-elevated);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--spacing-sm);
  color: var(--accent-blue);
}

.project-title {
  font-size: 1.5rem;
  margin-bottom: var(--spacing-sm);
}

.project-description {
  color: var(--text-secondary);
  margin-bottom: var(--spacing-sm);
}

.project-highlights {
  list-style: none;
  margin: var(--spacing-sm) 0;
  padding-left: 0;
}

.project-highlights li {
  padding-left: 1.5rem;
  position: relative;
  margin-bottom: 0.5rem;
  color: var(--text-secondary);
}

.project-highlights li::before {
  content: '▹';
  position: absolute;
  left: 0;
  color: var(--accent-green);
  font-size: 1.25rem;
}

.project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: var(--spacing-sm);
}

.tag {
  padding: 0.375rem 0.875rem;
  background: var(--bg-elevated);
  border: 1px solid var(--border-color);
  border-radius: 20px;
  font-size: 0.875rem;
  color: var(--accent-blue);
  font-weight: 500;
}

/* Web Projects List */
.web-projects-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 0.75rem;
  margin: var(--spacing-sm) 0;
}

.web-project-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.625rem 1rem;
  background: var(--bg-elevated);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  transition: all var(--transition-fast);
}

.web-project-item:hover {
  border-color: var(--accent-blue);
  background: var(--bg-tertiary);
  transform: translateX(5px);
}

.web-project-item svg {
  flex-shrink: 0;
  color: var(--accent-blue);
}

.web-project-item a {
  color: var(--text-primary);
  font-size: 0.95rem;
  font-weight: 500;
  text-decoration: none;
  transition: color var(--transition-fast);
  word-break: break-all;
}

.web-project-item:hover a {
  color: var(--accent-blue);
}

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

.timeline {
  max-width: 900px;
  margin: var(--spacing-lg) auto 0;
  position: relative;
}

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

.timeline-item {
  position: relative;
  padding-left: 80px;
  margin-bottom: var(--spacing-lg);
}

.timeline-dot {
  position: absolute;
  left: 20px;
  top: 0;
  width: 20px;
  height: 20px;
  background: var(--accent-blue);
  border: 4px solid var(--bg-secondary);
  border-radius: 50%;
  z-index: 1;
}

.timeline-content {
  background: var(--bg-elevated);
  padding: var(--spacing-md);
  border-radius: 12px;
  border: 1px solid var(--border-color);
  transition: all var(--transition-normal);
}

.timeline-content:hover {
  border-color: var(--accent-blue);
  transform: translateX(10px);
  box-shadow: 0 10px 30px var(--shadow);
}

.timeline-date {
  color: var(--accent-blue);
  font-weight: 600;
  font-size: 0.95rem;
  margin-bottom: 0.5rem;
}

.timeline-title {
  font-size: 1.5rem;
  margin-bottom: 0.25rem;
}

.timeline-company {
  color: var(--text-secondary);
  font-size: 1.1rem;
  font-weight: 500;
  margin-bottom: var(--spacing-sm);
}

.timeline-responsibilities {
  list-style: none;
  padding-left: 0;
}

.timeline-responsibilities li {
  padding-left: 1.5rem;
  position: relative;
  margin-bottom: var(--spacing-sm);
  color: var(--text-secondary);
}

.timeline-responsibilities li::before {
  content: '▸';
  position: absolute;
  left: 0;
  color: var(--accent-green);
  font-size: 1.25rem;
}

.timeline-responsibilities strong {
  color: var(--text-primary);
}

/* ===================================
   Skills Section
   =================================== */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--spacing-md);
  margin-top: var(--spacing-lg);
}

.skill-category {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: var(--spacing-md);
  transition: all var(--transition-normal);
}

.skill-category:hover {
  transform: translateY(-5px);
  border-color: var(--accent-blue);
  box-shadow: 0 10px 30px var(--shadow);
}

.category-icon {
  width: 60px;
  height: 60px;
  background: var(--bg-elevated);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--spacing-sm);
  color: var(--accent-blue);
}

.category-title {
  font-size: 1.35rem;
  margin-bottom: var(--spacing-sm);
}

.skills-list {
  list-style: none;
}

.skills-list li {
  padding: var(--spacing-sm);
  border-bottom: 1px solid var(--border-color);
  transition: all var(--transition-fast);
}

.skills-list li:last-child {
  border-bottom: none;
}

.skills-list li:hover {
  padding-left: calc(var(--spacing-sm) + 8px);
  background: var(--bg-elevated);
  border-radius: 8px;
}

.skill-name {
  display: block;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.25rem;
}

.skill-desc {
  display: block;
  font-size: 0.9rem;
  color: var(--text-secondary);
}

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

.education-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-md);
  margin-top: var(--spacing-lg);
  max-width: 900px;
  margin-left: auto;
  margin-right: auto;
}

.education-card {
  background: var(--bg-elevated);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: var(--spacing-md);
  display: flex;
  gap: var(--spacing-sm);
  transition: all var(--transition-normal);
}

.education-card:hover {
  transform: translateY(-5px);
  border-color: var(--accent-blue);
  box-shadow: 0 10px 30px var(--shadow);
}

.education-icon {
  flex-shrink: 0;
  width: 60px;
  height: 60px;
  background: var(--bg-secondary);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-blue);
}

.education-title {
  font-size: 1.25rem;
  margin-bottom: 0.5rem;
}

.education-school {
  color: var(--text-secondary);
  margin-bottom: 0.5rem;
}

.education-date {
  color: var(--accent-blue);
  font-weight: 600;
  font-size: 0.95rem;
}

/* ===================================
   Contact Section
   =================================== */
.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-lg);
  margin-top: var(--spacing-lg);
}

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

.contact-item {
  display: flex;
  gap: var(--spacing-sm);
  align-items: flex-start;
  padding: var(--spacing-sm);
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  transition: all var(--transition-normal);
}

.contact-item:hover {
  border-color: var(--accent-blue);
  transform: translateX(5px);
}

.contact-icon {
  flex-shrink: 0;
  width: 50px;
  height: 50px;
  background: var(--bg-elevated);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-blue);
}

.contact-item h4 {
  margin-bottom: 0.25rem;
  font-size: 1rem;
}

.contact-item p {
  color: var(--text-secondary);
  margin: 0;
}

.contact-item a {
  color: var(--text-secondary);
  transition: color var(--transition-fast);
}

.contact-item a:hover {
  color: var(--accent-blue);
}

.contact-cta {
  display: flex;
  align-items: center;
  justify-content: center;
}

.cta-card {
  background: linear-gradient(135deg, rgba(0, 122, 204, 0.1) 0%, rgba(78, 201, 176, 0.1) 100%);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: var(--spacing-lg);
  text-align: center;
  width: 100%;
}

.cta-card h3 {
  font-size: 1.75rem;
  margin-bottom: var(--spacing-sm);
}

.cta-card p {
  color: var(--text-secondary);
  margin-bottom: var(--spacing-md);
}

/* ===================================
   Footer
   =================================== */
.footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
  padding: var(--spacing-lg) 0;
}

.footer-content {
  text-align: center;
}

.footer-logo {
  margin-bottom: var(--spacing-sm);
}

.footer-logo img {
  height: 50px;
  width: auto;
  opacity: 0.8;
  transition: opacity var(--transition-fast);
}

.footer-logo img:hover {
  opacity: 1;
}

.footer-text {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

/* ===================================
   Responsive Design
   =================================== */
@media (max-width: 768px) {
  .nav-menu {
    display: flex;
    flex-direction: row;
    gap: var(--spacing-sm);
    overflow-x: auto;
    overflow-y: hidden;
    scrollbar-width: none;
    -ms-overflow-style: none;
  }

  .nav-menu::-webkit-scrollbar {
    display: none;
  }

  .nav-link {
    padding: 0.5rem 1rem;
    white-space: nowrap;
    font-size: 0.9rem;
  }

  .hamburger {
    display: none;
  }

  .hero-logo img {
    max-width: 300px;
  }

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

  .projects-grid {
    grid-template-columns: 1fr;
  }

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

  .timeline-item {
    padding-left: 60px;
  }

  .timeline-dot {
    left: 6px;
  }

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

@media (max-width: 480px) {
  :root {
    --spacing-md: 1rem;
    --spacing-lg: 2.5rem;
    --spacing-xl: 4rem;
  }

  .theme-toggle {
    width: 45px;
    height: 45px;
    top: 15px;
    right: 15px;
  }

  .hero-cta {
    flex-direction: column;
  }

  .btn {
    width: 100%;
  }

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

  .skills-grid,
  .education-grid {
    grid-template-columns: 1fr;
  }
}

/* ===================================
   Utility Classes
   =================================== */
.text-center { text-align: center; }
.text-gradient {
  background: linear-gradient(135deg, var(--accent-blue) 0%, var(--accent-green) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ===================================
   Animations
   =================================== */
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

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

/* Code block styling for tech feel */
code {
  background: var(--bg-elevated);
  padding: 0.25rem 0.5rem;
  border-radius: 4px;
  font-family: 'Consolas', 'Monaco', monospace;
  color: var(--accent-orange);
  font-size: 0.9em;
}