/* =================================================================
   CSS Variables & Reset
   ================================================================= */

:root {
  /* Colors */
  --primary-color: #0066cc;
  --primary-dark: #0052a3;
  --primary-light: #3385d6;
  --secondary-color: #00d4aa;
  --accent-color: #ff6b6b;

  /* Backgrounds */
  --bg-primary: #0a0e27;
  --bg-secondary: #111729;
  --bg-tertiary: #1a2235;
  --bg-card: #151c2f;

  /* Text */
  --text-primary: #ffffff;
  --text-secondary: #a8b2d1;
  --text-muted: #6b7a99;

  /* Borders */
  --border-color: #1e2a42;
  --border-light: #2a3650;

  /* Fonts */
  --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-heading: 'Raleway', sans-serif;

  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --spacing-2xl: 4rem;
  --spacing-3xl: 6rem;

  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;

  /* Shadows */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.15);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.2);
  --shadow-glow: 0 0 20px rgba(0, 102, 204, 0.3);
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
  /* Prevent font scaling in landscape */
  -webkit-tap-highlight-color: rgba(0, 102, 204, 0.2);
  /* Better tap feedback */
  overflow-x: hidden;
}

body {
  font-family: var(--font-primary);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* =================================================================
   Typography
   ================================================================= */

h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.2;
  color: var(--text-primary);
}

h1 {
  font-size: 3.5rem;
}

h2 {
  font-size: 2.5rem;
}

h3 {
  font-size: 2rem;
}

h4 {
  font-size: 1.5rem;
}

h5 {
  font-size: 1.25rem;
}

h6 {
  font-size: 1rem;
}

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

.lead {
  font-size: 1.25rem;
  font-weight: 400;
  color: var(--text-primary);
}

/* =================================================================
   Layout
   ================================================================= */

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

.section {
  padding: var(--spacing-3xl) 0;
  position: relative;
}

.section-title {
  text-align: center;
  margin-bottom: var(--spacing-2xl);
  font-size: 2.5rem;
  position: relative;
  display: block;
  width: 100%;
}

.section-title::after {
  content: '';
  position: absolute;
  bottom: -12px;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 4px;
  background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
  border-radius: 2px;
}

/* =================================================================
   Navigation
   ================================================================= */

.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(10, 14, 39, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border-color);
  transition: var(--transition-normal);
}

.navbar.scrolled {
  box-shadow: var(--shadow-lg);
}

.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-md) var(--spacing-lg);
}

.logo {
  font-size: 1.5rem;
  font-weight: 700;
  font-family: 'Courier New', monospace;
}

.logo-bracket {
  color: var(--primary-color);
}

.logo-text {
  color: var(--text-primary);
  margin: 0 4px;
}

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

.nav-link {
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: 500;
  transition: var(--transition-fast);
  position: relative;
  padding: 0.5rem 0;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--primary-color);
  transition: var(--transition-fast);
}

.nav-link:hover,
.nav-link.active {
  color: var(--primary-color);
}

.nav-link:hover::after,
.nav-link.active::after {
  width: 100%;
}

.hamburger {
  display: none;
  flex-direction: column;
  cursor: pointer;
  gap: 6px;
}

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

/* Language Switcher */
.lang-switch {
  display: flex;
  gap: 0;
  background: var(--bg-card);
  border-radius: 8px;
  padding: 4px;
  border: 1px solid var(--border-color);
}

.lang-btn {
  padding: 0.5rem 1rem;
  border: none;
  background: transparent;
  color: var(--text-secondary);
  font-weight: 600;
  font-size: 0.875rem;
  cursor: pointer;
  transition: var(--transition-fast);
  border-radius: 6px;
  font-family: var(--font-primary);
}

.lang-btn:hover {
  color: var(--text-primary);
}

.lang-btn.active {
  background: var(--primary-color);
  color: var(--text-primary);
}

/* =================================================================
   Hero Section
   ================================================================= */

.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  padding-top: 80px;
  overflow: hidden;
}

.hero-background {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
  z-index: -1;
}

.hero-background::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -50%;
  width: 100%;
  height: 100%;
  background: radial-gradient(circle, rgba(0, 102, 204, 0.1) 0%, transparent 70%);
  animation: pulse 8s ease-in-out infinite;
}

@keyframes pulse {

  0%,
  100% {
    transform: scale(1);
    opacity: 0.3;
  }

  50% {
    transform: scale(1.1);
    opacity: 0.5;
  }
}

.hero-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-3xl);
  align-items: center;
}

.hero-text {
  z-index: 1;
}

.greeting {
  display: block;
  font-size: 1.25rem;
  color: var(--primary-color);
  font-weight: 400;
  margin-bottom: var(--spacing-sm);
  animation: fadeInDown 0.6s ease;
}

.name {
  display: block;
  font-size: 4rem;
  font-weight: 700;
  background: linear-gradient(135deg, var(--text-primary) 0%, var(--primary-light) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: var(--spacing-md);
  animation: fadeInDown 0.8s ease;
}

.hero-subtitle {
  font-size: 1.75rem;
  color: var(--text-secondary);
  font-weight: 600;
  margin-bottom: var(--spacing-md);
  animation: fadeInDown 1s ease;
}

.hero-description {
  font-size: 1.1rem;
  color: var(--text-muted);
  margin-bottom: var(--spacing-xl);
  max-width: 540px;
  animation: fadeInUp 1.2s ease;
}

.hero-buttons {
  display: flex;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-xl);
  animation: fadeInUp 1.4s ease;
}

.btn {
  padding: 0.875rem 2rem;
  border-radius: 8px;
  text-decoration: none;
  font-weight: 600;
  transition: var(--transition-normal);
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  cursor: pointer;
  border: none;
  font-size: 1rem;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
  color: var(--text-primary);
  box-shadow: 0 4px 15px rgba(0, 102, 204, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0, 102, 204, 0.4);
}

.btn-secondary {
  background: transparent;
  color: var(--text-primary);
  border: 2px solid var(--primary-color);
}

.btn-secondary:hover {
  background: var(--primary-color);
  transform: translateY(-2px);
}

.btn-download {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
}

.hero-social {
  display: flex;
  gap: var(--spacing-md);
  animation: fadeInUp 1.6s ease;
}

.social-link {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  transition: var(--transition-normal);
}

.social-link:hover {
  background: var(--primary-color);
  color: var(--text-primary);
  transform: translateY(-4px);
  box-shadow: var(--shadow-glow);
}

/* Terminal Window */
.hero-image {
  z-index: 1;
  animation: fadeInRight 1s ease;
}

.terminal-window {
  background: var(--bg-card);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--border-color);
  width: 100%;
  max-width: 100%;
}

.terminal-header {
  background: var(--bg-tertiary);
  padding: 12px 16px;
  display: flex;
  gap: 8px;
  border-bottom: 1px solid var(--border-color);
}

.terminal-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
}

.terminal-dot.red {
  background: #ff5f56;
}

.terminal-dot.yellow {
  background: #ffbd2e;
}

.terminal-dot.green {
  background: #27c93f;
}

.terminal-body {
  padding: var(--spacing-lg);
  min-height: 380px;
  max-height: 380px;
  width: 100%;
  overflow-y: auto;
  overflow-x: hidden;
  font-family: 'Courier New', monospace;
  font-size: 0.85rem;
  line-height: 1.4;
  word-wrap: break-word;
  white-space: pre-wrap;
  text-align: left;
}

/* Custom scrollbar for terminal */
.terminal-body::-webkit-scrollbar {
  width: 8px;
}

.terminal-body::-webkit-scrollbar-track {
  background: var(--bg-tertiary);
}

.terminal-body::-webkit-scrollbar-thumb {
  background: var(--primary-color);
  border-radius: 4px;
}

.terminal-body::-webkit-scrollbar-thumb:hover {
  background: var(--primary-light);
}

.terminal-body code {
  color: var(--secondary-color);
  line-height: 1.8;
  display: block;
  text-align: left;
}

/* Blinking cursor animation */
@keyframes blink {

  0%,
  49% {
    opacity: 1;
  }

  50%,
  100% {
    opacity: 0;
  }
}

#terminal-code::after {
  content: '';
  animation: blink 1s infinite;
}

/* Scroll Indicator */
.scroll-indicator {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  width: 30px;
  height: 50px;
  border: 2px solid var(--primary-color);
  border-radius: 20px;
  display: flex;
  justify-content: center;
  padding-top: 8px;
  opacity: 0.6;
  animation: bounce 2s infinite;
}

.scroll-indicator span {
  width: 6px;
  height: 10px;
  background: var(--primary-color);
  border-radius: 3px;
  animation: scroll 1.5s infinite;
}

@keyframes scroll {

  0%,
  100% {
    transform: translateY(0);
    opacity: 1;
  }

  50% {
    transform: translateY(12px);
    opacity: 0.3;
  }
}

@keyframes bounce {

  0%,
  100% {
    transform: translateX(-50%) translateY(0);
  }

  50% {
    transform: translateX(-50%) translateY(-10px);
  }
}

/* =================================================================
   About Section
   ================================================================= */

.about {
  background: var(--bg-secondary);
}

.about-content {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: var(--spacing-3xl);
}

.about-text p {
  font-size: 1.1rem;
}

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

.highlight-item {
  text-align: center;
  padding: var(--spacing-lg);
  background: var(--bg-card);
  border-radius: 12px;
  border: 1px solid var(--border-color);
  transition: var(--transition-normal);
}

.highlight-item:hover {
  transform: translateY(-4px);
  border-color: var(--primary-color);
}

.highlight-number {
  font-size: 2.5rem;
  font-weight: 700;
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: var(--spacing-xs);
}

.highlight-label {
  font-size: 0.9rem;
  color: var(--text-muted);
  font-weight: 500;
}

.about-certifications h3 {
  margin-bottom: var(--spacing-lg);
  color: var(--text-primary);
  text-align: center;
}

.cert-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-md);
}

.cert-card {
  background: var(--bg-card);
  padding: var(--spacing-lg);
  border-radius: 12px;
  border: 1px solid var(--border-color);
  text-align: center;
  transition: var(--transition-normal);
}

.cert-card:hover {
  transform: translateY(-4px);
  border-color: var(--primary-color);
  box-shadow: var(--shadow-md);
}

.cert-icon {
  font-size: 2rem;
  margin-bottom: var(--spacing-sm);
}

.cert-name {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-primary);
}

/* =================================================================
   Retro C64 Section
   ================================================================= */

.retro-section {
  background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
  position: relative;
  overflow: hidden;
}

.retro-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background:
    repeating-linear-gradient(0deg,
      rgba(0, 0, 0, 0.1) 0px,
      rgba(0, 0, 0, 0.1) 2px,
      transparent 2px,
      transparent 4px);
  pointer-events: none;
  opacity: 0.3;
}

.retro-title {
  color: #6fc3df;
  text-shadow: 0 0 10px rgba(111, 195, 223, 0.5);
}

.retro-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-3xl);
  position: relative;
  z-index: 1;
}

.retro-intro {
  margin-bottom: var(--spacing-lg);
}

.c64-prompt {
  font-family: 'Courier New', monospace;
  color: #6fc3df;
  font-size: 1.2rem;
  margin-bottom: var(--spacing-sm);
  text-shadow: 0 0 8px rgba(111, 195, 223, 0.6);
}

.retro-text p {
  font-size: 1.1rem;
  color: var(--text-secondary);
  margin-bottom: var(--spacing-md);
}

.retro-highlights {
  display: flex;
  gap: var(--spacing-lg);
  margin: var(--spacing-xl) 0;
}

.retro-feature {
  flex: 1;
  background: rgba(111, 195, 223, 0.1);
  border: 2px solid #6fc3df;
  border-radius: 8px;
  padding: var(--spacing-md);
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  transition: var(--transition-normal);
}

.retro-feature:hover {
  background: rgba(111, 195, 223, 0.2);
  transform: translateY(-4px);
  box-shadow: 0 4px 20px rgba(111, 195, 223, 0.3);
}

.retro-icon {
  font-size: 2rem;
  filter: drop-shadow(0 0 5px rgba(111, 195, 223, 0.5));
}

.retro-info {
  flex: 1;
}

.retro-label {
  font-size: 0.85rem;
  color: #6fc3df;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 4px;
}

.retro-value {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-primary);
  font-family: 'Courier New', monospace;
}

.retro-quote {
  background: rgba(0, 0, 0, 0.3);
  border-left: 4px solid #6fc3df;
  padding: var(--spacing-lg);
  margin-top: var(--spacing-xl);
  position: relative;
  border-radius: 0 8px 8px 0;
}

.quote-mark {
  position: absolute;
  top: -10px;
  left: 10px;
  font-size: 4rem;
  color: #6fc3df;
  opacity: 0.3;
  font-family: Georgia, serif;
}

.retro-quote p {
  font-style: italic;
  font-size: 1.15rem;
  color: #a8d5e2;
  margin: 0;
  padding-left: var(--spacing-lg);
}

.retro-reunion {
  background: linear-gradient(135deg, rgba(111, 195, 223, 0.15), rgba(0, 212, 170, 0.15));
  border: 2px solid var(--secondary-color);
  border-radius: 12px;
  padding: var(--spacing-xl);
  margin-top: var(--spacing-xl);
  position: relative;
  overflow: hidden;
}

.retro-reunion::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, rgba(0, 212, 170, 0.1) 0%, transparent 70%);
  animation: pulse 3s ease-in-out infinite;
}

@keyframes pulse {

  0%,
  100% {
    opacity: 0.5;
    transform: scale(1);
  }

  50% {
    opacity: 1;
    transform: scale(1.1);
  }
}

.reunion-badge {
  display: inline-block;
  background: var(--secondary-color);
  color: var(--bg-primary);
  padding: var(--spacing-xs) var(--spacing-md);
  border-radius: 20px;
  font-weight: 700;
  font-size: 0.9rem;
  margin-bottom: var(--spacing-md);
  box-shadow: 0 4px 12px rgba(0, 212, 170, 0.3);
}

.retro-reunion h4 {
  color: var(--secondary-color);
  font-size: 1.5rem;
  margin-bottom: var(--spacing-md);
  position: relative;
  z-index: 1;
}

.retro-reunion p {
  font-size: 1.1rem;
  color: var(--text-primary);
  margin: 0;
  position: relative;
  z-index: 1;
}

.retro-visual {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}

.c64-frame {
  background: #3d3d3d;
  border-radius: 12px;
  padding: var(--spacing-md);
  box-shadow:
    0 10px 40px rgba(0, 0, 0, 0.5),
    inset 0 2px 4px rgba(255, 255, 255, 0.1);
}

.c64-screen {
  background: #3539A8;
  border-radius: 8px;
  padding: var(--spacing-lg);
  position: relative;
  overflow: hidden;
  border: 3px solid #2a2a2a;
  box-shadow: inset 0 0 20px rgba(0, 0, 0, 0.8);
}

.scanlines {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: repeating-linear-gradient(0deg,
      rgba(0, 0, 0, 0.15) 0px,
      rgba(0, 0, 0, 0.15) 2px,
      transparent 2px,
      transparent 4px);
  pointer-events: none;
  z-index: 2;
}

.c64-boot {
  position: relative;
  z-index: 1;
}

.c64-text {
  font-family: 'Courier New', monospace;
  font-size: 0.95rem;
  color: #A8C7FA;
  text-shadow: 0 0 3px rgba(168, 199, 250, 0.5);
  line-height: 1.4;
  white-space: pre;
  overflow-x: auto;
}

.cursor {
  display: inline-block;
  animation: blink 1s infinite;
  color: #A8C7FA;
}

@keyframes blink {

  0%,
  49% {
    opacity: 1;
  }

  50%,
  100% {
    opacity: 0;
  }
}

.c64-image-container {
  margin-top: var(--spacing-lg);
}

.c64-image {
  width: 100%;
  height: auto;
  border-radius: 8px;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
  transition: var(--transition-normal);
}

.c64-image:hover {
  transform: scale(1.02);
  box-shadow: 0 12px 48px rgba(111, 195, 223, 0.3);
}

.image-caption {
  text-align: center;
  margin-top: var(--spacing-sm);
  font-size: 0.9rem;
  color: #6fc3df;
  font-style: italic;
}

/* =================================================================
   Experience Section (Timeline)
   ================================================================= */

.timeline {
  position: relative;
  max-width: 900px;
  margin: 0 auto;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(180deg, var(--primary-color), var(--secondary-color));
}

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

.timeline-item:last-child {
  padding-bottom: 0;
}

.timeline-dot {
  position: absolute;
  left: -6px;
  top: 0;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--primary-color);
  border: 3px solid var(--bg-primary);
  box-shadow: 0 0 0 4px var(--bg-card);
}

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

.timeline-content:hover {
  transform: translateX(8px);
  border-color: var(--primary-color);
  box-shadow: var(--shadow-md);
}

.timeline-date {
  color: var(--primary-color);
  font-weight: 600;
  font-size: 0.9rem;
  margin-bottom: var(--spacing-sm);
}

.timeline-content h3 {
  font-size: 1.5rem;
  margin-bottom: var(--spacing-xs);
}

.timeline-content h4 {
  color: var(--text-secondary);
  font-weight: 600;
  font-size: 1.1rem;
  margin-bottom: var(--spacing-md);
}

.timeline-content p {
  margin-bottom: var(--spacing-md);
}

.timeline-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-xs);
}

.tag {
  padding: 0.4rem 0.8rem;
  background: rgba(0, 102, 204, 0.1);
  color: var(--primary-light);
  border-radius: 6px;
  font-size: 0.85rem;
  font-weight: 500;
  border: 1px solid rgba(0, 102, 204, 0.2);
}

/* =================================================================
   Skills Section
   ================================================================= */

.skills {
  background: var(--bg-secondary);
}

.skills-intro {
  text-align: center;
  max-width: 700px;
  margin: 0 auto var(--spacing-2xl);
}

.skills-intro h3 {
  margin-bottom: var(--spacing-md);
  color: var(--primary-color);
}

.skills-developing {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-3xl);
}

.skill-card {
  background: var(--bg-card);
  padding: var(--spacing-xl);
  border-radius: 12px;
  border: 1px solid var(--border-color);
  text-align: center;
  transition: var(--transition-normal);
}

.skill-card:hover {
  transform: translateY(-8px);
  border-color: var(--primary-color);
  box-shadow: var(--shadow-md);
}

.skill-icon {
  font-size: 3rem;
  margin-bottom: var(--spacing-md);
}

.skill-card h4 {
  margin-bottom: var(--spacing-xs);
  color: var(--text-primary);
}

.skill-card p {
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-bottom: var(--spacing-md);
}

.skill-progress {
  width: 100%;
  height: 8px;
  background: var(--bg-tertiary);
  border-radius: 4px;
  overflow: hidden;
}

.progress-bar {
  height: 100%;
  background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
  border-radius: 4px;
  transition: width 1s ease;
}

.skills-mastered {
  margin-top: var(--spacing-3xl);
}

.skills-mastered>h3 {
  text-align: center;
  margin-bottom: var(--spacing-2xl);
  font-size: 2rem;
  background: linear-gradient(135deg, var(--primary-color), #00a8ff);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.skills-categories {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: var(--spacing-xl);
}

.skill-category {
  background: linear-gradient(135deg, rgba(0, 102, 204, 0.05), rgba(0, 168, 255, 0.02));
  padding: var(--spacing-2xl);
  border-radius: 16px;
  border: 1px solid rgba(0, 102, 204, 0.2);
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.skill-category::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, var(--primary-color), #00a8ff);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition-normal);
}

.skill-category:hover {
  transform: translateY(-5px);
  border-color: var(--primary-color);
  box-shadow: 0 10px 30px rgba(0, 102, 204, 0.2);
}

.skill-category:hover::before {
  transform: scaleX(1);
}

.category-header {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-lg);
}

.category-icon {
  font-size: 2rem;
  width: 50px;
  height: 50px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, rgba(0, 102, 204, 0.15), rgba(0, 168, 255, 0.1));
  border-radius: 12px;
  border: 1px solid rgba(0, 102, 204, 0.3);
}

.skill-category h4 {
  margin: 0;
  color: var(--text-primary);
  font-size: 1.2rem;
  font-weight: 600;
}

.skill-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
}

.skill-tag {
  padding: 0.7rem 1.3rem;
  background: rgba(0, 102, 204, 0.1);
  color: var(--text-secondary);
  border-radius: 10px;
  font-size: 0.9rem;
  border: 1px solid rgba(0, 102, 204, 0.2);
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
  font-weight: 500;
}

.skill-tag::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
  transition: left 0.5s;
}

.skill-tag.expert {
  border-color: var(--primary-color);
}

.skill-tag.expert::after {
  content: '⭐';
  margin-left: 6px;
  font-size: 0.8em;
  opacity: 0.7;
}

.skill-tag:hover {
  background: var(--primary-color);
  color: var(--text-primary);
  transform: translateY(-3px) scale(1.05);
  border-color: var(--primary-color);
  box-shadow: 0 5px 15px rgba(0, 102, 204, 0.3);
}

.skill-tag:hover::before {
  left: 100%;
}

/* =================================================================
   Projects Section
   ================================================================= */

.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
  gap: var(--spacing-xl);
}

.project-card {
  background: var(--bg-card);
  padding: var(--spacing-xl);
  border-radius: 12px;
  border: 1px solid var(--border-color);
  transition: var(--transition-normal);
  display: flex;
  flex-direction: column;
}

.project-card:hover {
  transform: translateY(-8px);
  border-color: var(--primary-color);
  box-shadow: var(--shadow-lg);
}

.project-header {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-md);
}

.project-icon {
  font-size: 2.5rem;
}

.project-header h3 {
  font-size: 1.25rem;
  color: var(--text-primary);
}

.project-description {
  flex-grow: 1;
  margin-bottom: var(--spacing-md);
  color: var(--text-secondary);
}

.project-tech {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-xs);
}

.project-tech span {
  padding: 0.4rem 0.8rem;
  background: rgba(0, 212, 170, 0.1);
  color: var(--secondary-color);
  border-radius: 6px;
  font-size: 0.8rem;
  font-weight: 500;
  border: 1px solid rgba(0, 212, 170, 0.2);
}

/* =================================================================
   Contact Section
   ================================================================= */

.contact {
  background: var(--bg-secondary);
}

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

.contact-info h3 {
  margin-bottom: var(--spacing-md);
}

.contact-info p {
  margin-bottom: var(--spacing-xl);
}

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

.contact-method {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-lg);
  background: var(--bg-card);
  border-radius: 12px;
  border: 1px solid var(--border-color);
  text-decoration: none;
  transition: var(--transition-normal);
}

.contact-method:hover {
  transform: translateX(8px);
  border-color: var(--primary-color);
  box-shadow: var(--shadow-md);
}

.contact-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-tertiary);
  border-radius: 12px;
  color: var(--primary-color);
}

.contact-text {
  flex-grow: 1;
}

.contact-label {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 4px;
}

.contact-value {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-primary);
}

.cta-card {
  background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
  padding: var(--spacing-xl);
  border-radius: 12px;
  text-align: center;
  box-shadow: var(--shadow-lg);
}

.cta-card h4 {
  margin-bottom: var(--spacing-md);
  font-size: 1.75rem;
}

.cta-card p {
  margin-bottom: var(--spacing-xl);
  color: rgba(255, 255, 255, 0.9);
}

/* =================================================================
   Footer
   ================================================================= */

.footer {
  background: var(--bg-tertiary);
  border-top: 1px solid var(--border-color);
  padding: var(--spacing-2xl) 0 var(--spacing-lg);
}

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

.footer-brand p {
  color: var(--text-muted);
  margin-top: var(--spacing-sm);
  margin-bottom: 0;
}

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

.footer-links a {
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: 500;
  transition: var(--transition-fast);
}

.footer-links a:hover {
  color: var(--primary-color);
}

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

.footer-bottom p {
  color: var(--text-muted);
  font-size: 0.9rem;
  margin: 0;
}

/* =================================================================
   Animations
   ================================================================= */

@keyframes fadeInDown {
  from {
    opacity: 0;
    transform: translateY(-30px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

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

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

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

  to {
    opacity: 1;
    transform: translateX(0);
  }
}

/* =================================================================
   Responsive Design
   ================================================================= */

@media (max-width: 968px) {
  h1 {
    font-size: 2.5rem;
  }

  h2 {
    font-size: 2rem;
  }

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

  .hero-content {
    grid-template-columns: 1fr;
    gap: var(--spacing-xl);
    text-align: center;
  }

  .hero-image {
    order: -1;
    max-width: 400px;
    margin: 0 auto;
  }

  .hero-text {
    display: flex;
    flex-direction: column;
    align-items: center;
  }

  .name {
    font-size: 3rem;
  }

  .about-content {
    grid-template-columns: 1fr;
    gap: var(--spacing-xl);
  }

  .contact-content {
    grid-template-columns: 1fr;
    gap: var(--spacing-xl);
  }

  .projects-grid {
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-lg);
  }

  .skills-grid {
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  }
}

@media (max-width: 768px) {
  .nav-menu {
    position: fixed;
    left: -100%;
    top: 70px;
    flex-direction: column;
    background: var(--bg-secondary);
    width: 100%;
    text-align: center;
    transition: var(--transition-normal);
    box-shadow: var(--shadow-lg);
    padding: var(--spacing-xl) 0;
    border-top: 1px solid var(--border-color);
    max-height: calc(100vh - 70px);
    overflow-y: auto;
  }

  /* Terminal responsive fixes */
  .terminal-window {
    margin: 0;
    max-width: 100%;
    overflow: hidden;
  }

  .terminal-body {
    font-size: 0.7rem;
    padding: var(--spacing-md);
    min-height: 300px;
    max-height: 300px;
    line-height: 1.4;
    text-align: left !important;
    overflow-x: hidden;
  }

  .terminal-body code {
    white-space: pre-wrap;
    word-break: break-word;
    text-align: left !important;
    display: block;
  }

  .terminal-body pre {
    text-align: left !important;
    margin: 0;
  }

  /* Headers responsive */
  h1 {
    font-size: 2.5rem;
  }

  h2 {
    font-size: 2rem;
  }

  h3 {
    font-size: 1.65rem;
  }

  .section-title {
    font-size: 2.25rem;
    text-align: center;
    display: block;
    width: 100%;
    left: 0;
    transform: none;
  }

  /* About section numbers */
  .highlight-number {
    font-size: 2rem;
  }

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

  .nav-link {
    padding: var(--spacing-md) var(--spacing-lg);
    display: block;
    font-size: 1.1rem;
  }

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

  .lang-switch {
    position: fixed;
    top: 15px;
    right: 60px;
    z-index: 1001;
  }

  .hamburger {
    display: flex;
  }

  .hamburger.active span:nth-child(1) {
    transform: rotate(45deg) translate(10px, 10px);
  }

  .hamburger.active span:nth-child(2) {
    opacity: 0;
  }

  .hamburger.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -7px);
  }

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

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

  .retro-content {
    grid-template-columns: 1fr;
    gap: var(--spacing-xl);
  }

  .retro-highlights {
    flex-direction: column;
  }

  .c64-text {
    font-size: 0.75rem;
  }

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

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

  /* Center all section headings on mobile */
  .about-certifications h3,
  .skills-intro h3,
  .skills-mastered>h3,
  .contact-info h3,
  .cta-card h4 {
    text-align: center;
  }

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

  .footer-links {
    flex-direction: column;
    gap: var(--spacing-sm);
  }
}

/* Medium mobile devices */
@media (max-width: 640px) {
  .hero-title {
    font-size: 2rem;
  }

  .name {
    font-size: 2.75rem;
  }

  .hero-subtitle {
    font-size: 1.35rem;
  }

  .section-title {
    font-size: 2rem;
    padding: 0 var(--spacing-md);
    text-align: center;
    display: block;
    width: 100%;
    left: 0;
    transform: none;
  }

  h1 {
    font-size: 2rem;
  }

  h2 {
    font-size: 1.75rem;
  }

  h3 {
    font-size: 1.5rem;
  }

  h4 {
    font-size: 1.25rem;
  }

  /* About section numbers */
  .highlight-number {
    font-size: 1.75rem;
  }

  /* Stack buttons vertically */
  .hero-buttons {
    width: 100%;
  }

  .hero-buttons .btn {
    width: 100%;
  }

  /* Improve spacing for cards */
  .skill-card,
  .project-card {
    padding: var(--spacing-lg);
  }

  /* Better timeline on small screens */
  .timeline-item {
    padding-left: var(--spacing-lg);
  }

  .timeline-content {
    padding: var(--spacing-md);
  }

  .retro-quote p {
    font-size: 1rem;
  }

  .retro-feature {
    flex-direction: column;
    text-align: center;
  }
}

@media (max-width: 480px) {
  html {
    font-size: 14px;
  }

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

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

  /* Terminal extra small screens */
  .terminal-window {
    margin: 0;
    border-radius: 8px;
    min-width: auto;
    width: 100%;
    max-width: 100%;
    overflow: hidden;
  }

  .terminal-body {
    font-size: 0.5rem;
    padding: var(--spacing-xs);
    min-height: 220px;
    max-height: 220px;
    line-height: 1.25;
    text-align: left !important;
    overflow-x: hidden;
    overflow-y: auto;
    word-break: break-all;
    white-space: pre-wrap;
  }

  .terminal-body code {
    text-align: left !important;
  }

  .terminal-body pre {
    text-align: left !important;
  }

  .terminal-header {
    padding: 8px 12px;
  }

  .terminal-dot {
    width: 10px;
    height: 10px;
  }

  h1 {
    font-size: 2rem;
  }

  h2 {
    font-size: 1.75rem;
  }

  h3 {
    font-size: 1.5rem;
  }

  .name {
    font-size: 2.5rem;
  }

  .hero-subtitle {
    font-size: 1.25rem;
  }

  .section-title {
    font-size: 1.75rem;
    padding: 0 var(--spacing-md);
    text-align: center;
    display: block;
    width: 100%;
    left: 0;
    transform: none;
  }

  /* About section numbers */
  .highlight-number {
    font-size: 1.5rem;
  }

  .hero-buttons .btn {
    width: 100%;
    text-align: center;
    justify-content: center;
  }

  .timeline::before {
    left: 10px;
  }

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

  /* Touch-friendly buttons */
  .btn,
  .nav-link,
  .lang-btn {
    min-height: 44px;
    min-width: 44px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
  }

  /* Better card spacing */
  .skill-card,
  .project-card,
  .cert-card {
    margin-bottom: var(--spacing-lg);
  }

  .c64-text {
    font-size: 0.6rem;
    white-space: pre-wrap;
    word-break: break-word;
  }

  .retro-highlights {
    gap: var(--spacing-md);
  }

  .retro-quote {
    padding: var(--spacing-md);
  }

  .retro-quote p {
    font-size: 0.95rem;
    padding-left: var(--spacing-sm);
  }

  /* Improve form fields */
  input,
  textarea,
  .form-group {
    font-size: 16px;
    /* Prevents zoom on iOS */
  }
}