/**
 * Developer Portfolio Styles
 * Dark theme with modern design
 */

/* ============================================
   CSS VARIABLES
   ============================================ */
:root {
  /* Colors - Dark Theme */
  --color-bg: #0a0a0f;
  --color-bg-secondary: #12121a;
  --color-bg-tertiary: #1a1a25;
  --color-surface: #1e1e2e;

  --color-primary: #64ffda;
  --color-primary-dark: #4fd1b5;
  --color-secondary: #7c3aed;

  --color-text: #e2e8f0;
  --color-text-secondary: #94a3b8;
  --color-text-muted: #64748b;

  --color-border: #2d2d3d;
  --color-success: #22c55e;
  --color-error: #ef4444;

  /* Gradients */
  --gradient-primary: linear-gradient(135deg, #64ffda 0%, #7c3aed 100%);
  --gradient-bg: linear-gradient(180deg, #0a0a0f 0%, #12121a 100%);

  /* Typography */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

  /* 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;
  --spacing-4xl: 6rem;

  /* Layout */
  --container-max-width: 1200px;
  --border-radius: 8px;
  --border-radius-lg: 16px;

  /* Shadows */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 20px rgba(100, 255, 218, 0.15);

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

/* ============================================
   RESET & BASE
   ============================================ */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
}

body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.7;
  color: var(--color-text);
  background: var(--color-bg);
  overflow-x: hidden;
}

::selection {
  background: var(--color-primary);
  color: var(--color-bg);
}

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

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

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

ul, ol {
  list-style: none;
}

/* ============================================
   LAYOUT
   ============================================ */
.container {
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

.section {
  padding: var(--spacing-4xl) 0;
}

/* ============================================
   HEADER & NAVIGATION
   ============================================ */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(10, 10, 15, 0.85);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border);
  padding: var(--spacing-md) 0;
  transition: var(--transition-normal);
}

.nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-family: var(--font-mono);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-primary);
  letter-spacing: -1px;
}

.logo:hover {
  color: var(--color-primary);
  text-shadow: var(--shadow-glow);
}

.nav-menu {
  display: flex;
  gap: var(--spacing-xl);
}

.nav-menu a {
  color: var(--color-text-secondary);
  font-size: 0.9rem;
  font-weight: 500;
  position: relative;
}

.nav-menu a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-primary);
  transition: var(--transition-fast);
}

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

.nav-menu a:hover::after {
  width: 100%;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--spacing-sm);
}

.nav-toggle span {
  width: 24px;
  height: 2px;
  background: var(--color-text);
  transition: var(--transition-fast);
}

/* ============================================
   HERO SECTION
   ============================================ */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  padding: var(--spacing-4xl) 0;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background:
    radial-gradient(ellipse at 20% 80%, rgba(100, 255, 218, 0.08) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 20%, rgba(124, 58, 237, 0.08) 0%, transparent 50%);
  z-index: -1;
}

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

.hero-content {
  animation: fadeInUp 0.8s ease;
}

.hero-greeting {
  font-family: var(--font-mono);
  font-size: 1rem;
  color: var(--color-primary);
  margin-bottom: var(--spacing-md);
}

.hero-name {
  font-size: clamp(2.5rem, 6vw, 4rem);
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--spacing-sm);
  line-height: 1.1;
}

.hero-title {
  font-size: clamp(1.5rem, 4vw, 2.5rem);
  font-weight: 600;
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-lg);
}

.hero-desc {
  font-size: 1.1rem;
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-xl);
  max-width: 500px;
}

.hero-desc .highlight {
  color: var(--color-primary);
  font-weight: 500;
}

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

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

.hero-socials a {
  color: var(--color-text-secondary);
  transition: var(--transition-fast);
}

.hero-socials a:hover {
  color: var(--color-primary);
  transform: translateY(-3px);
}

/* Terminal */
.hero-terminal {
  background: var(--color-surface);
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  animation: fadeInUp 0.8s ease 0.2s both;
}

.terminal-header {
  background: var(--color-bg-tertiary);
  padding: var(--spacing-sm) var(--spacing-md);
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

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

.terminal-dot.red { background: #ff5f56; }
.terminal-dot.yellow { background: #ffbd2e; }
.terminal-dot.green { background: #27ca40; }

.terminal-title {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-text-muted);
}

.terminal-body {
  padding: var(--spacing-lg);
  font-family: var(--font-mono);
  font-size: 0.9rem;
  line-height: 1.8;
}

.terminal-body pre {
  margin: 0;
}

.code-keyword { color: #c792ea; }
.code-variable { color: #82aaff; }
.code-property { color: var(--color-primary); }
.code-string { color: #c3e88d; }
.code-boolean { color: #ff9cac; }
.code-number { color: #f78c6c; }

/* Scroll indicator */
.scroll-indicator {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
}

.scroll-indicator span {
  display: block;
  width: 24px;
  height: 40px;
  border: 2px solid var(--color-text-muted);
  border-radius: 12px;
  position: relative;
}

.scroll-indicator span::before {
  content: '';
  position: absolute;
  top: 8px;
  left: 50%;
  transform: translateX(-50%);
  width: 4px;
  height: 8px;
  background: var(--color-primary);
  border-radius: 2px;
  animation: scrollDown 1.5s infinite;
}

@keyframes scrollDown {
  0% { opacity: 1; top: 8px; }
  100% { opacity: 0; top: 20px; }
}

/* ============================================
   BUTTONS
   ============================================ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-lg);
  border-radius: var(--border-radius);
  font-weight: 500;
  font-size: 0.95rem;
  cursor: pointer;
  transition: var(--transition-normal);
  border: 2px solid transparent;
}

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

.btn-primary:hover {
  background: transparent;
  border-color: var(--color-primary);
  color: var(--color-primary);
  box-shadow: var(--shadow-glow);
}

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

.btn-outline:hover {
  background: rgba(100, 255, 218, 0.1);
  box-shadow: var(--shadow-glow);
}

.btn-full {
  width: 100%;
  justify-content: center;
}

/* ============================================
   SECTION TITLES
   ============================================ */
.section-title {
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--spacing-2xl);
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.section-title::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--color-border);
  max-width: 300px;
}

.section-number {
  font-family: var(--font-mono);
  font-size: 1.25rem;
  color: var(--color-primary);
  font-weight: 400;
}

/* ============================================
   FUN CHART SECTION
   ============================================ */
.fun-chart {
  background: var(--color-bg-secondary);
}

.chart-wrapper {
  background: var(--color-surface);
  border-radius: var(--border-radius-lg);
  padding: var(--spacing-xl);
  border: 1px solid var(--color-border);
}

.chart-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-lg);
  flex-wrap: wrap;
  gap: var(--spacing-md);
}

.chart-title {
  font-size: 1.25rem;
  color: var(--color-text);
  font-weight: 600;
}

.chart-controls {
  display: flex;
  gap: var(--spacing-sm);
}

.chart-btn {
  width: 36px;
  height: 36px;
  border: 1px solid var(--color-border);
  background: var(--color-bg-tertiary);
  color: var(--color-text);
  border-radius: var(--border-radius);
  cursor: pointer;
  font-size: 1.2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition-fast);
}

.chart-btn:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  background: rgba(100, 255, 218, 0.1);
}

.chart-container {
  position: relative;
  width: 100%;
  height: 400px;
  background: var(--color-bg-tertiary);
  border-radius: var(--border-radius);
  overflow: hidden;
  cursor: grab;
}

.chart-container:active {
  cursor: grabbing;
}

#funChart {
  width: 100%;
  height: 100%;
}

.chart-tooltip {
  position: absolute;
  background: var(--color-bg);
  border: 1px solid var(--color-primary);
  border-radius: var(--border-radius);
  padding: var(--spacing-sm) var(--spacing-md);
  font-size: 0.85rem;
  color: var(--color-text);
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.2s ease;
  z-index: 10;
  white-space: nowrap;
  box-shadow: var(--shadow-md);
}

.chart-tooltip.visible {
  opacity: 1;
}

.chart-legend {
  display: flex;
  justify-content: center;
  gap: var(--spacing-xl);
  margin-top: var(--spacing-lg);
  flex-wrap: wrap;
}

.legend-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: 0.9rem;
  color: var(--color-text-secondary);
}

.legend-color {
  width: 16px;
  height: 16px;
  border-radius: 4px;
}

.chart-hint {
  text-align: center;
  margin-top: var(--spacing-md);
  font-size: 0.8rem;
  color: var(--color-text-muted);
  font-family: var(--font-mono);
}

@media (max-width: 768px) {
  .chart-container {
    height: 300px;
  }

  .chart-legend {
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-sm);
  }

  .chart-header {
    flex-direction: column;
    align-items: flex-start;
  }
}

/* ============================================
   ABOUT SECTION
   ============================================ */
.about-content {
  display: grid;
  grid-template-columns: 3fr 2fr;
  gap: var(--spacing-3xl);
  align-items: start;
}

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

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

.about-tech-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-sm);
  margin-top: var(--spacing-md);
}

.about-tech-list li {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  position: relative;
  padding-left: var(--spacing-lg);
}

.about-tech-list li::before {
  content: '>';
  position: absolute;
  left: 0;
  color: var(--color-primary);
}

.about-image-wrapper {
  position: relative;
}

.about-image-wrapper::before {
  content: '';
  position: absolute;
  top: 20px;
  left: 20px;
  right: -20px;
  bottom: -20px;
  border: 2px solid var(--color-primary);
  border-radius: var(--border-radius);
  z-index: -1;
  transition: var(--transition-normal);
}

.about-image-wrapper:hover::before {
  top: 10px;
  left: 10px;
}

.about-image-placeholder {
  background: var(--color-surface);
  border-radius: var(--border-radius);
  aspect-ratio: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition-normal);
}

.about-image-placeholder svg {
  width: 40%;
  height: 40%;
  color: var(--color-text-muted);
}

.about-image-placeholder:hover {
  box-shadow: var(--shadow-glow);
}

/* ============================================
   SKILLS SECTION
   ============================================ */
.skills {
  background: var(--color-bg-secondary);
}

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

.skill-category {
  background: var(--color-surface);
  padding: var(--spacing-xl);
  border-radius: var(--border-radius-lg);
  border: 1px solid var(--color-border);
  transition: var(--transition-normal);
}

.skill-category:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-glow);
}

.skill-category-title {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: 1.1rem;
  color: var(--color-text);
  margin-bottom: var(--spacing-lg);
}

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

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

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

.skill-name {
  min-width: 100px;
  font-size: 0.9rem;
  color: var(--color-text-secondary);
}

.skill-bar {
  flex: 1;
  height: 8px;
  background: var(--color-bg-tertiary);
  border-radius: 4px;
  overflow: hidden;
}

.skill-progress {
  height: 100%;
  background: var(--gradient-primary);
  border-radius: 4px;
  width: 0;
  transition: width 1s ease;
}

/* ============================================
   PROJECTS SECTION
   ============================================ */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-xl);
}

.project-card {
  background: var(--color-surface);
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  border: 1px solid var(--color-border);
  transition: var(--transition-normal);
}

.project-card:hover {
  transform: translateY(-5px);
  border-color: var(--color-primary);
  box-shadow: var(--shadow-glow);
}

.project-card.featured {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: 1fr 1fr;
}

.project-image {
  background: var(--color-bg-tertiary);
  aspect-ratio: 16/10;
  display: flex;
  align-items: center;
  justify-content: center;
}

.project-card.featured .project-image {
  aspect-ratio: auto;
}

.project-image-placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.project-image-placeholder svg {
  width: 30%;
  height: 30%;
  color: var(--color-text-muted);
  opacity: 0.5;
}

.project-content {
  padding: var(--spacing-xl);
}

.project-label {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--color-primary);
  margin-bottom: var(--spacing-sm);
}

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

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

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

.project-tech li {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--color-text-muted);
  background: var(--color-bg-tertiary);
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: 4px;
}

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

.project-link {
  color: var(--color-text-secondary);
  transition: var(--transition-fast);
}

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

/* ============================================
   EXPERIENCE SECTION
   ============================================ */
.experience {
  background: var(--color-bg-secondary);
}

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

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

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

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

.experience-marker {
  position: absolute;
  left: -6px;
  top: 6px;
  width: 14px;
  height: 14px;
  background: var(--color-bg-secondary);
  border: 2px solid var(--color-primary);
  border-radius: 50%;
}

.experience-content {
  background: var(--color-surface);
  padding: var(--spacing-xl);
  border-radius: var(--border-radius);
  border: 1px solid var(--color-border);
  transition: var(--transition-normal);
}

.experience-content:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-glow);
}

.experience-header {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-sm);
}

.experience-header h3 {
  font-size: 1.2rem;
  color: var(--color-text);
}

.experience-company {
  font-family: var(--font-mono);
  color: var(--color-primary);
}

.experience-date {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--color-text-muted);
  margin-bottom: var(--spacing-md);
}

.experience-list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.experience-list li {
  position: relative;
  padding-left: var(--spacing-lg);
  color: var(--color-text-secondary);
  font-size: 0.95rem;
}

.experience-list li::before {
  content: '>';
  position: absolute;
  left: 0;
  color: var(--color-primary);
  font-family: var(--font-mono);
}

/* ============================================
   CONTACT SECTION
   ============================================ */
.contact-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-3xl);
  align-items: start;
}

.contact-text h3 {
  font-size: 1.75rem;
  color: var(--color-text);
  margin-bottom: var(--spacing-md);
}

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

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

.contact-link {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  color: var(--color-text-secondary);
  font-size: 0.95rem;
}

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

.contact-link svg {
  flex-shrink: 0;
}

/* Contact Form */
.contact-form {
  background: var(--color-surface);
  padding: var(--spacing-xl);
  border-radius: var(--border-radius-lg);
  border: 1px solid var(--color-border);
}

.form-group {
  margin-bottom: var(--spacing-lg);
}

.form-group label {
  display: block;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-text);
  margin-bottom: var(--spacing-sm);
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: var(--spacing-md);
  background: var(--color-bg-tertiary);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  color: var(--color-text);
  font-size: 1rem;
  font-family: inherit;
  transition: var(--transition-fast);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--color-text-muted);
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(100, 255, 218, 0.1);
}

.form-group textarea {
  resize: vertical;
  min-height: 120px;
}

.form-result {
  margin-top: var(--spacing-md);
  padding: var(--spacing-md);
  border-radius: var(--border-radius);
  text-align: center;
  font-size: 0.95rem;
}

.form-result.success {
  background: rgba(34, 197, 94, 0.1);
  color: var(--color-success);
  border: 1px solid rgba(34, 197, 94, 0.3);
}

.form-result.error {
  background: rgba(239, 68, 68, 0.1);
  color: var(--color-error);
  border: 1px solid rgba(239, 68, 68, 0.3);
}

/* ============================================
   FOOTER
   ============================================ */
.footer {
  background: var(--color-bg-secondary);
  padding: var(--spacing-2xl) 0;
  border-top: 1px solid var(--color-border);
}

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

.footer-socials {
  display: flex;
  justify-content: center;
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-lg);
}

.footer-socials a {
  color: var(--color-text-muted);
  transition: var(--transition-fast);
}

.footer-socials a:hover {
  color: var(--color-primary);
  transform: translateY(-3px);
}

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

.footer-text .heart {
  color: #ef4444;
  animation: heartbeat 1.5s infinite;
}

@keyframes heartbeat {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.1); }
}

.footer-copyright {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--color-text-muted);
}

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

.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 1024px) {
  .hero .container {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .hero-content {
    order: 1;
  }

  .hero-terminal {
    order: 2;
    max-width: 500px;
    margin: 0 auto;
  }

  .hero-desc {
    margin-left: auto;
    margin-right: auto;
  }

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

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

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

  .about-image {
    max-width: 300px;
    margin: 0 auto;
  }

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

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

  .project-card.featured {
    grid-template-columns: 1fr;
  }

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

@media (max-width: 768px) {
  .nav-menu {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--color-bg-secondary);
    flex-direction: column;
    padding: var(--spacing-lg);
    gap: var(--spacing-md);
    border-bottom: 1px solid var(--color-border);
  }

  .nav-menu.active {
    display: flex;
  }

  .nav-toggle {
    display: flex;
  }

  .hero {
    padding-top: 120px;
  }

  .hero-name {
    font-size: 2rem;
  }

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

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

  .section-title {
    font-size: 1.5rem;
  }

  .experience-timeline::before {
    display: none;
  }

  .experience-item {
    padding-left: 0;
  }

  .experience-marker {
    display: none;
  }

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

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

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

  .btn {
    width: 100%;
    justify-content: center;
  }

  .terminal-body {
    font-size: 0.75rem;
    padding: var(--spacing-md);
  }

  .skill-item {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--spacing-xs);
  }

  .skill-bar {
    width: 100%;
  }
}