:root {
  /* Colors */
  --color-bg: #0a0a0a;
  --color-bg-elevated: #111111;
  --color-bg-card: #0f0f0f;
  --color-border: #1a1a1a;
  --color-border-hover: #2a2a2a;
  
  --color-text-primary: #e0e0e0;
  --color-text-secondary: #6b7280;
  --color-text-muted: #4a4a4a;
  
  --color-accent: #3b82f6;
  --color-accent-dim: #1d4ed8;
  --color-accent-glow: rgba(59, 130, 246, 0.15);
  --color-accent-glow-strong: rgba(59, 130, 246, 0.3);
  
  --color-terminal-red: #ff5f57;
  --color-terminal-yellow: #febc2e;
  --color-terminal-green: #28c840;
  
  /* Typography */
  --font-mono: 'JetBrains Mono', 'Fira Code', 'SF Mono', Consolas, monospace;
  
  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-base: 1rem;
  --text-lg: 1.125rem;
  --text-xl: 1.25rem;
  --text-2xl: 1.5rem;
  --text-3xl: 1.875rem;
  --text-4xl: 2.25rem;
  --text-5xl: 3rem;
  --text-6xl: 3.75rem;
  
  /* Spacing */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;
  
  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 200ms ease;
  --transition-slow: 300ms ease;
  
  /* Borders */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  
  /* Shadows */
  --shadow-glow: 0 0 20px var(--color-accent-glow);
  --shadow-glow-strong: 0 0 30px var(--color-accent-glow-strong);
}

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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-mono);
  font-size: var(--text-base);
  line-height: 1.6;
  color: var(--color-text-primary);
  background-color: var(--color-bg);
  overflow-x: hidden;
}

a {
  color: inherit;
  text-decoration: none;
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

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

ul, ol {
  list-style: none;
}

/* --------------------------------------------------------------------------
   Scanline Overlay Effect
   -------------------------------------------------------------------------- */
.scanlines {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 9999;
  opacity: 0.03;
  background: repeating-linear-gradient(
    0deg,
    transparent,
    transparent 2px,
    rgba(0, 0, 0, 0.3) 2px,
    rgba(0, 0, 0, 0.3) 4px
  );
}

/* --------------------------------------------------------------------------
   Layout Utilities
   -------------------------------------------------------------------------- */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-6);
}

.section {
  padding: var(--space-24) 0;
}

/* --------------------------------------------------------------------------
   Terminal Components
   -------------------------------------------------------------------------- */
.terminal-prompt {
  color: var(--color-accent);
  font-weight: 600;
}

.terminal-command {
  color: var(--color-text-secondary);
}

.terminal-header {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-4);
  background: var(--color-bg-elevated);
  border-bottom: 1px solid var(--color-border);
  border-radius: var(--radius-md) var(--radius-md) 0 0;
}

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

.terminal-dot.red { background: var(--color-terminal-red); }
.terminal-dot.yellow { background: var(--color-terminal-yellow); }
.terminal-dot.green { background: var(--color-terminal-green); }

.terminal-title {
  margin-left: var(--space-3);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
}

.terminal-body {
  padding: var(--space-6);
  background: var(--color-bg-card);
  border-radius: 0 0 var(--radius-md) var(--radius-md);
}

.terminal-line {
  margin-bottom: var(--space-2);
  font-size: var(--text-sm);
}

.highlight {
  color: var(--color-accent);
}

/* Blinking Cursor */
.cursor {
  display: inline-block;
  animation: blink 1s step-end infinite;
}
@media (max-width: 768px) {
  .terminal-line {
    font-size: clamp(0.65rem, 8vw, 0.9rem);
  }
}
@keyframes blink {
  0%, 50% { opacity: 1; }
  51%, 100% { opacity: 0; }
}
.blink-cursor {
  animation: blink 1s step-end infinite;
}

/* --------------------------------------------------------------------------
   Navigation
   -------------------------------------------------------------------------- */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: var(--space-4) 0;
  background: rgba(10, 10, 10, 0.8);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition-base);
}

.nav.scrolled {
  border-bottom-color: var(--color-border);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-6);
}

.nav-logo {
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--color-text-primary);
  transition: color var(--transition-base);
}

.nav-logo:hover {
  color: var(--color-accent);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: var(--space-2);
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-text-primary);
  transition: transform var(--transition-base), opacity var(--transition-base);
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: var(--space-8);
}

.nav-link {
  position: relative;
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  transition: color var(--transition-base);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--color-accent);
  transition: width var(--transition-base);
}

.nav-link:hover {
  color: var(--color-accent);
}

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

/* Mobile Navigation */
@media (max-width: 768px) {
  .nav-toggle {
    display: flex;
  }
  
  .nav-menu {
    position: fixed;
    top: 60px;
    left: 0;
    right: 0;
    flex-direction: column;
    gap: 0;
    padding: var(--space-6);
    background: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: transform var(--transition-slow), opacity var(--transition-slow), visibility var(--transition-slow);
  }
  
  .nav-menu.active {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }
  
  .nav-link {
    display: block;
    padding: var(--space-4) 0;
    font-size: var(--text-base);
  }
  
  .nav-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
  }
  
  .nav-toggle.active span:nth-child(2) {
    opacity: 0;
  }
  
  .nav-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
  }
}

/* --------------------------------------------------------------------------
   Hero Section
   -------------------------------------------------------------------------- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-20) var(--space-6);
  overflow: hidden;
}

.hero-bg-grid {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image: 
    linear-gradient(rgba(59, 130, 246, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(59, 130, 246, 0.03) 1px, transparent 1px);
  background-size: 50px 50px;
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: 800px;
}

.hero-terminal {
  display: inline-block;
  text-align: left;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-glow);
  overflow: hidden;
}

.hero-terminal .terminal-body {
  min-width: 300px;
  padding: var(--space-8);
}

.hero-title {
  font-size: var(--text-4xl);
  font-weight: 700;
  margin: var(--space-4) 0;
  color: var(--color-text-primary);
  min-height: 1.2em;
}

.hero-subtitle {
  font-size: var(--text-lg);
  color: var(--color-text-secondary);
  min-height: 1.5em;
}

.hero-scroll {
  position: absolute;
  bottom: calc(var(--space-6) * -3);
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-2);
  color: var(--color-text-muted);
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: 2px;
  animation: float 2s ease-in-out infinite;
}

@keyframes float {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(10px); }
}
@keyframes resizeTextMobile {
  0% {
    font-size: 0.4rem;
  }
  50% {
    font-size: 8vw;
  }
  100% {
    font-size: 0.7rem;
  }
}
@media (max-width: 480px) {
  .hero-subtitle {
    animation: resizeTextMobile 1s ease forwards;
  }
}

/* --------------------------------------------------------------------------
   Section Title
   -------------------------------------------------------------------------- */
.section-title {
  font-size: var(--text-2xl);
  font-weight: 600;
  margin-bottom: var(--space-12);
  color: var(--color-text-primary);
}

/* --------------------------------------------------------------------------
   About Section
   -------------------------------------------------------------------------- */
.about-content {
  display: grid;
  grid-template-columns: 300px 1fr;
  gap: var(--space-12);
  align-items: start;
}

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

.about-image-frame {
  position: relative;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.about-image {
  width: 100%;
  aspect-ratio: 1;
  object-fit: cover;
  filter: grayscale(20%);
  transition: filter var(--transition-base);
}

.about-image-frame:hover .about-image {
  filter: grayscale(0%);
}

.about-image-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, var(--color-accent-glow), transparent);
  pointer-events: none;
}

.about-image-decoration {
  position: absolute;
  top: var(--space-4);
  left: var(--space-4);
  right: calc(var(--space-4) * -1);
  bottom: calc(var(--space-4) * -1);
  border: 1px solid var(--color-accent);
  border-radius: var(--radius-md);
  z-index: -1;
  opacity: 0.3;
}

.about-terminal {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.about-text .terminal-line {
  opacity: 0;
  transform: translateY(10px);
}

.about-text .terminal-line.visible {
  opacity: 1;
  transform: translateY(0);
  transition: opacity 0.3s ease, transform 0.3s ease;
}

.line-text {
  color: var(--color-text-secondary);
}
@media (max-width: 900px) {
  .about-content {
    grid-template-columns: 1fr;
    gap: var(--space-8);
  }
  
  .about-image-wrapper {
    max-width: 300px;
    margin: 0 auto;
  }
}

/* --------------------------------------------------------------------------
   Skills Section - Infinite Marquee
   -------------------------------------------------------------------------- */
.skills-marquee {
  overflow: hidden;
  padding: var(--space-8) 0;
  mask-image: linear-gradient(90deg, transparent, black 10%, black 90%, transparent);
}

.marquee-track {
  display: flex;
  width: max-content;
  animation: marquee 40s linear infinite;
}

.marquee-track:hover {
  animation-play-state: paused;
}

@keyframes marquee {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

.marquee-content {
  display: flex;
  gap: var(--space-10);
  padding: 0 var(--space-5);
}

.skill-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-4);
  border-radius: var(--radius-md);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
  cursor: default;
  width: 105px;
  height: 105px;
}

.skill-item:hover {
  transform: scale(1.1);
  box-shadow: var(--shadow-glow);
}

.skill-icon {
  width: 24px;
  height: 24px;
  transition: filter var(--transition-base);
}

.skill-item:hover .skill-icon {
  filter: drop-shadow(0 0 10px var(--color-accent-glow-strong));
}

.skill-icon-img {
  width: 24px;
  height: 24px;
  object-fit: contain;
}

.skill-item span {
  font-size: var(--text-xs);
  color: var(--color-text-secondary);
  text-transform: uppercase;
  letter-spacing: 1px;
}

/* --------------------------------------------------------------------------
   Projects Section
   -------------------------------------------------------------------------- */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-6);
  margin-bottom: var(--space-10);
}

.project-card {
  position: relative;
  padding: var(--space-6);
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: transform var(--transition-base), border-color var(--transition-base), box-shadow var(--transition-base);
}

/* Clickable card styles */
.clickable-card {
  cursor: pointer;
}

.clickable-card:active {
  transform: translateY(-3px) scale(0.98);
}

.project-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, var(--color-accent-glow), transparent);
  opacity: 0;
  transition: opacity var(--transition-base);
  pointer-events: none;
}

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

.project-card:hover::before {
  opacity: 1;
}

.project-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: var(--space-6);
}

.project-icon {
  padding: var(--space-3);
  background: var(--color-bg-elevated);
  border-radius: var(--radius-sm);
  color: var(--color-accent);
}

.project-links {
  display: flex;
  gap: var(--space-3);
}

.project-link {
  padding: var(--space-2);
  color: var(--color-text-muted);
  transition: color var(--transition-base), transform var(--transition-base);
}

.project-link:hover {
  color: var(--color-accent);
  transform: translateY(-2px);
}

.project-title {
  font-size: var(--text-xl);
  font-weight: 600;
  margin-bottom: var(--space-3);
  color: var(--color-text-primary);
}

.project-description {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-6);
  line-height: 1.7;
}

.project-tech {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.project-tech li {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  padding: var(--space-1) var(--space-3);
  background: var(--color-bg-elevated);
  border-radius: var(--radius-sm);
}

/* See All Projects Button */
.projects-cta {
  display: flex;
  justify-content: center;
  margin-top: var(--space-12);
}

.btn-all-projects {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-4) var(--space-8);
  font-family: var(--font-mono);
  font-size: var(--text-base);
  color: var(--color-accent);
  background: var(--color-bg-card);
  border: 2px solid var(--color-accent);
  border-radius: var(--radius-md);
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.btn-all-projects::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: var(--color-accent);
  transition: left var(--transition-slow);
  z-index: -1;
}

.btn-all-projects:hover::before {
  left: 0;
}

.btn-all-projects:hover {
  color: var(--color-bg);
  box-shadow: var(--shadow-glow-strong);
  transform: translateY(-2px);
}

.btn-all-projects svg {
  transition: transform var(--transition-base);
}

.btn-all-projects:hover svg {
  transform: translateX(5px);
}

@media (max-width: 768px) {
  .btn-all-projects {
    padding: var(--space-3) var(--space-6);
    font-size: var(--text-sm);
  }
}

/* --------------------------------------------------------------------------
   Contact Section
   -------------------------------------------------------------------------- */
.contact-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-12);
  align-items: start;
}

.contact-terminal {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.contact-form {
  padding: var(--space-6);
  background: var(--color-bg-card);
}

.form-group {
  margin-bottom: var(--space-5);
}

.form-label {
  display: block;
  margin-bottom: var(--space-2);
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
}

.form-input {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--color-text-primary);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  transition: border-color var(--transition-base), box-shadow var(--transition-base);
}

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

.form-input:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px var(--color-accent-glow);
}

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

.form-submit {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--color-accent);
  background: var(--color-bg);
  border: 1px solid var(--color-accent);
  border-radius: var(--radius-sm);
  transition: background var(--transition-base), color var(--transition-base), box-shadow var(--transition-base);
}

.form-submit:hover {
  background: var(--color-accent);
  color: var(--color-bg);
  box-shadow: var(--shadow-glow);
}

.contact-info {
  padding-top: var(--space-4);
}

.contact-text {
  font-size: var(--text-base);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-4);
  line-height: 1.8;
}

.contact-socials {
  display: flex;
  gap: var(--space-4);
  margin-top: var(--space-8);
}

.social-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  color: var(--color-text-secondary);
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  transition: color var(--transition-base), border-color var(--transition-base), transform var(--transition-base);
}

.social-link:hover {
  color: var(--color-accent);
  border-color: var(--color-accent);
  transform: translateY(-3px);
}

@media (max-width: 900px) {
  .contact-content {
    grid-template-columns: 1fr;
    gap: var(--space-8);
  }
  
  .contact-info {
    order: -1;
    padding-top: 0;
  }
}

/* --------------------------------------------------------------------------
   Footer
   -------------------------------------------------------------------------- */
.footer {
  padding: var(--space-8) 0;
  border-top: 1px solid var(--color-border);
}

.footer-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-4);
  text-align: center;
}

.footer-terminal {
  font-size: var(--text-sm);
}

.footer-text {
  color: var(--color-text-secondary);
}

.footer-copyright {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
}

/* --------------------------------------------------------------------------
   Reveal Animations
   -------------------------------------------------------------------------- */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

.project-card.reveal[data-delay="0"] { transition-delay: 0ms; }
.project-card.reveal[data-delay="100"] { transition-delay: 100ms; }
.project-card.reveal[data-delay="200"] { transition-delay: 200ms; }
.project-card.reveal[data-delay="300"] { transition-delay: 300ms; }

/* --------------------------------------------------------------------------
   Responsive Typography
   -------------------------------------------------------------------------- */
@media (max-width: 768px) {
  .hero-title {
    font-size: var(--text-2xl);
  }
  
  .hero-subtitle {
    font-size: var(--text-base);
  }
  
  .section-title {
    font-size: var(--text-xl);
  }
  
  .section {
    padding: var(--space-16) 0;
  }
}

@media (max-width: 480px) {
  :root {
    --text-base: 0.875rem;
  }
  
  .container {
    padding: 0 var(--space-4);
  }
  
  .hero-terminal .terminal-body {
    padding: var(--space-6);
    min-width: auto;
  }
}