/* ===================================
   MODERN DEVELOPER PORTFOLIO
   Dark Cyberpunk Aesthetic
   =================================== */

/* ===== CSS Variables ===== */
:root {
  /* Colors */
  --bg-primary: #0a0e27;
  --bg-secondary: #151932;
  --bg-card: rgba(21, 25, 50, 0.8);
  --accent-primary: #00ff41;
  --accent-secondary: #00d9ff;
  --accent-purple: #b967ff;
  --text-primary: #e0e0e0;
  --text-secondary: #a0a0a0;
  --text-muted: #6b7280;

  /* Gradients */
  --gradient-primary: linear-gradient(
    135deg,
    var(--accent-primary),
    var(--accent-secondary)
  );
  --gradient-purple: linear-gradient(135deg, #b967ff, #05ffa1);

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

  /* Typography */
  --font-code: "JetBrains Mono", monospace;
  --font-body: "Inter", sans-serif;

  /* Effects */
  --glow-primary: 0 0 20px rgba(0, 255, 65, 0.5);
  --glow-secondary: 0 0 20px rgba(0, 217, 255, 0.5);
  --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.4);
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 70px; /* offset for fixed navbar */
}

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

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

/* ===== Matrix Canvas Background ===== */
#matrix-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
  opacity: 0.15;
}

/* ===== Navigation ===== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: rgba(10, 14, 39, 0.95); /* --bg-primary at 95% opacity */
  backdrop-filter: blur(10px);
  padding: 1rem 0;
  z-index: 1000;
  border-bottom: 1px solid rgba(0, 255, 65, 0.2);
  transition: all 0.3s ease;
}

.navbar.scrolled {
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
}

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

.logo {
  font-family: var(--font-code);
  font-size: 1.5rem;
  font-weight: 700;
  text-decoration: none;
  color: var(--text-primary);
  transition: all 0.3s ease;
}

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

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

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

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

.nav-link {
  font-family: var(--font-code);
  font-size: 0.9rem;
  color: var(--text-secondary);
  text-decoration: none;
  padding: 0.5rem 1rem;
  border-radius: 4px;
  transition: all 0.3s ease;
  position: relative;
}

.nav-link::before {
  content: "";
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 2px;
  background: var(--gradient-primary);
  transition: width 0.3s ease;
}

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

.nav-link:hover::before,
.nav-link.active::before {
  width: 80%;
}

.mobile-toggle {
  display: none;
  flex-direction: column;
  gap: 4px;
  background: transparent;
  border: none;
  cursor: pointer;
}

.mobile-toggle span {
  width: 25px;
  height: 3px;
  background: var(--accent-primary);
  border-radius: 2px;
  transition: all 0.3s ease;
}

/* ===== Hero Section ===== */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-xl) 0;
  position: relative;
}

.hero-content {
  text-align: center;
  animation: fadeInUp 1s ease;
}

.terminal-window {
  background: var(--bg-card);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(0, 255, 65, 0.3);
  border-radius: 8px;
  box-shadow: var(--shadow-card), var(--glow-primary);
  max-width: 700px;
  margin: 0 auto var(--spacing-md);
  overflow: hidden;
}

.terminal-header {
  background: rgba(0, 0, 0, 0.3);
  padding: 0.75rem 1rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  border-bottom: 1px solid rgba(0, 255, 65, 0.2);
}

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

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

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

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

.terminal-title {
  font-family: var(--font-code);
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-left: auto;
}

.terminal-body {
  padding: var(--spacing-md);
  font-family: var(--font-code);
  font-size: 0.95rem;
  text-align: left;
}

.terminal-line {
  margin-bottom: 0.5rem;
}

.prompt {
  color: var(--accent-primary);
  margin-right: 0.5rem;
}

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

.terminal-output {
  color: var(--text-primary);
  margin-bottom: 1rem;
  margin-left: 1.5rem;
}

.typing-animation {
  overflow: hidden;
  border-right: 2px solid var(--accent-primary);
  white-space: nowrap;
  animation:
    typing 2s steps(30) 1s forwards,
    blink 0.75s step-end infinite;
}

.skill-tag {
  display: inline-block;
  background: rgba(0, 255, 65, 0.1);
  color: var(--accent-primary);
  padding: 0.25rem 0.75rem;
  border-radius: 4px;
  margin-right: 0.5rem;
  margin-bottom: 0.5rem;
  font-size: 0.85rem;
  border: 1px solid rgba(0, 255, 65, 0.3);
}

.cursor-blink {
  animation: blink 0.75s step-end infinite;
}

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

.cta-button {
  font-family: var(--font-code);
  padding: 0.875rem 2rem;
  border-radius: 6px;
  text-decoration: none;
  font-weight: 500;
  transition: all 0.3s ease;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  border: 2px solid;
}

.cta-button.primary {
  background: var(--gradient-primary);
  color: var(--bg-primary);
  border-color: var(--accent-primary);
}

.cta-button.primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(0, 255, 65, 0.4);
}

.cta-button.secondary {
  background: transparent;
  color: var(--accent-secondary);
  border-color: var(--accent-secondary);
}

.cta-button.secondary:hover {
  background: rgba(0, 217, 255, 0.1);
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(0, 217, 255, 0.3);
}

.cta-button.large {
  padding: 1rem 2.5rem;
  font-size: 1.05rem;
}

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

.section-title {
  font-family: var(--font-code);
  font-size: 2.5rem;
  text-align: center;
  margin-bottom: var(--spacing-lg);
  color: var(--text-primary);
}

.gradient-text {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ===== About Section ===== */
.about-content {
  max-width: 900px;
  margin: 0 auto;
}

.about-text h3 {
  font-size: 2rem;
  margin-bottom: var(--spacing-md);
}

.about-text p {
  font-size: 1.1rem;
  color: var(--text-secondary);
  margin-bottom: var(--spacing-sm);
  line-height: 1.8;
}

.about-text strong {
  color: var(--accent-primary);
  font-weight: 600;
}

.highlight-box {
  background: rgba(0, 255, 65, 0.05);
  border-left: 4px solid var(--accent-primary);
  padding: var(--spacing-sm);
  margin: var(--spacing-md) 0;
  border-radius: 4px;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: var(--spacing-sm);
  margin-top: var(--spacing-md);
}

.stat-card {
  background: var(--bg-card);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(0, 255, 65, 0.2);
  border-radius: 8px;
  padding: var(--spacing-sm);
  text-align: center;
  transition: all 0.3s ease;
}

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

.stat-number {
  font-family: var(--font-code);
  font-size: 2rem;
  font-weight: 700;
  color: var(--accent-primary);
}

.stat-label {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-top: 0.25rem;
}

/* ===== Skills Section ===== */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-md);
}

.skill-category {
  background: var(--bg-card);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(0, 217, 255, 0.2);
  border-radius: 8px;
  padding: var(--spacing-md);
  transition: all 0.3s ease;
}

.skill-category:hover {
  transform: translateY(-5px);
  border-color: var(--accent-secondary);
  box-shadow: var(--glow-secondary);
}

.skill-category h3 {
  font-family: var(--font-code);
  font-size: 1.25rem;
  color: var(--accent-secondary);
  margin-bottom: var(--spacing-sm);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

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

.skill-item {
  margin-bottom: 0.5rem;
}

.skill-header {
  display: flex;
  justify-content: space-between;
  margin-bottom: 0.5rem;
}

.skill-name {
  font-weight: 500;
  color: var(--text-primary);
}

.skill-level {
  font-size: 0.85rem;
  color: var(--accent-primary);
  font-family: var(--font-code);
}

.skill-bar {
  height: 8px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 4px;
  overflow: hidden;
}

.skill-progress {
  height: 100%;
  background: var(--gradient-primary);
  border-radius: 4px;
  transition: width 1s ease;
  box-shadow: 0 0 10px rgba(0, 255, 65, 0.5);
}

/* ===== Projects Section ===== */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: var(--spacing-md);
}

.project-card {
  background: var(--bg-card);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(185, 103, 255, 0.2);
  border-radius: 12px;
  padding: var(--spacing-md);
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.project-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--gradient-purple);
  transform: scaleX(0);
  transition: transform 0.3s ease;
}

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

.project-card:hover {
  transform: translateY(-10px);
  border-color: var(--accent-purple);
  box-shadow: 0 0 30px rgba(185, 103, 255, 0.3);
}

.project-icon {
  font-size: 3rem;
  color: var(--accent-purple);
  margin-bottom: var(--spacing-sm);
}

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

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

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

.tech-badge {
  font-family: var(--font-code);
  font-size: 0.75rem;
  background: rgba(185, 103, 255, 0.1);
  color: var(--accent-purple);
  padding: 0.25rem 0.75rem;
  border-radius: 12px;
  border: 1px solid rgba(185, 103, 255, 0.3);
}

.project-highlights {
  margin-top: var(--spacing-sm);
  padding-top: var(--spacing-sm);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.highlight-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-bottom: 0.5rem;
}

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

/* ===== Experience Section ===== */
.timeline {
  max-width: 800px;
  margin: 0 auto;
  position: relative;
}

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

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

.timeline-marker {
  position: absolute;
  left: -6px;
  top: 0;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--accent-primary);
  box-shadow:
    0 0 0 4px var(--bg-primary),
    var(--glow-primary);
}

.timeline-content {
  background: var(--bg-card);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(0, 255, 65, 0.2);
  border-radius: 8px;
  padding: var(--spacing-md);
  transition: all 0.3s ease;
}

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

.timeline-date {
  font-family: var(--font-code);
  font-size: 0.85rem;
  color: var(--accent-secondary);
  margin-bottom: 0.5rem;
}

.timeline-title {
  font-size: 1.5rem;
  color: var(--text-primary);
  margin-bottom: 0.25rem;
}

.timeline-company {
  font-size: 1.1rem;
  color: var(--accent-primary);
  margin-bottom: var(--spacing-sm);
}

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

.timeline-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.tag {
  font-family: var(--font-code);
  font-size: 0.75rem;
  background: rgba(0, 217, 255, 0.1);
  color: var(--accent-secondary);
  padding: 0.25rem 0.75rem;
  border-radius: 12px;
  border: 1px solid rgba(0, 217, 255, 0.3);
}

/* ===== Contact Section ===== */
.contact-content {
  max-width: 800px;
  margin: 0 auto;
  text-align: center;
}

.contact-text {
  margin-bottom: var(--spacing-lg);
}

.contact-text h3 {
  font-size: 2rem;
  margin-bottom: var(--spacing-sm);
}

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

.contact-links {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-lg);
}

.contact-card {
  background: var(--bg-card);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(0, 217, 255, 0.2);
  border-radius: 8px;
  padding: var(--spacing-md);
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  text-decoration: none;
  transition: all 0.3s ease;
}

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

.contact-icon {
  font-size: 2rem;
  color: var(--accent-secondary);
}

.contact-info h4 {
  color: var(--text-primary);
  margin-bottom: 0.25rem;
}

.contact-info p {
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin: 0;
}

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

/* ===== Footer ===== */
.footer {
  background: var(--bg-secondary);
  border-top: 1px solid rgba(0, 255, 65, 0.2);
  padding: var(--spacing-md) 0;
  text-align: center;
}

.footer-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
}

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

.footer-text i {
  color: #ff5f56;
}

.footer-copyright {
  font-size: 0.85rem;
  color: var(--text-muted);
}

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

@keyframes typing {
  from {
    width: 0;
  }
  to {
    width: 100%;
    border-right: none;
  }
}

@keyframes blink {
  50% {
    opacity: 0;
  }
}

@keyframes rainbow {
  0% { filter: hue-rotate(0deg); }
  100% { filter: hue-rotate(360deg); }
}

.konami-active {
  animation: rainbow 2s linear infinite;
}

/* ===== Responsive Design ===== */
@media (max-width: 768px) {
  .nav-menu {
    position: fixed;
    left: -100%;
    top: 70px;
    flex-direction: column;
    background: rgba(10, 14, 39, 0.98);
    width: 100%;
    text-align: center;
    transition: left 0.3s ease;
    padding: var(--spacing-md);
    border-top: 1px solid rgba(0, 255, 65, 0.2);
  }

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

  .mobile-toggle {
    display: flex;
  }

  .section-title {
    font-size: 2rem;
  }

  .terminal-body {
    font-size: 0.85rem;
  }

  .about-text h3 {
    font-size: 1.5rem;
  }

  .about-text p {
    font-size: 1rem;
  }

  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

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

  .timeline::before {
    left: 0;
  }

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

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

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

  .cta-button.large {
    width: 100%;
  }
}

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

  .terminal-window {
    margin: 0 var(--spacing-sm) var(--spacing-sm);
  }

  .section-title {
    font-size: 1.75rem;
  }

  .stat-number {
    font-size: 1.5rem;
  }

  .project-icon {
    font-size: 2rem;
  }

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

/* ===== Scroll Animations ===== */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  will-change: opacity, transform;
  transition:
    opacity 0.6s ease,
    transform 0.6s ease;
}

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

/* ===== Skip Link ===== */
.skip-link {
  position: absolute;
  top: -100%;
  left: 1rem;
  background: var(--accent-primary);
  color: var(--bg-primary);
  padding: 0.5rem 1rem;
  border-radius: 4px;
  font-family: var(--font-code);
  font-weight: 700;
  text-decoration: none;
  z-index: 9999;
  transition: top 0.2s ease;
}

.skip-link:focus {
  top: 1rem;
}

/* ===== Focus Visible States ===== */
.nav-link:focus-visible,
.logo:focus-visible {
  outline: 2px solid var(--accent-primary);
  outline-offset: 4px;
  border-radius: 4px;
}

.cta-button:focus-visible {
  outline: 2px solid var(--accent-primary);
  outline-offset: 4px;
}

.contact-card:focus-visible {
  outline: 2px solid var(--accent-secondary);
  outline-offset: 4px;
  border-color: var(--accent-secondary);
}

.mobile-toggle:focus-visible {
  outline: 2px solid var(--accent-primary);
  outline-offset: 4px;
  border-radius: 4px;
}

.back-to-top:focus-visible {
  outline: 2px solid var(--accent-primary);
  outline-offset: 4px;
}

/* ===== Back to Top Button ===== */
.back-to-top {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--gradient-primary);
  color: var(--bg-primary);
  border: none;
  cursor: pointer;
  font-size: 1.1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 999;
  opacity: 0;
  transform: translateY(20px);
  pointer-events: none;
  transition: opacity 0.3s ease, transform 0.3s ease;
  box-shadow: var(--glow-primary);
}

.back-to-top.visible {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

.back-to-top:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 20px rgba(0, 255, 65, 0.5);
}

/* ===== Reduced Motion ===== */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }

  .fade-in {
    opacity: 1;
    transform: none;
    will-change: auto;
  }

  .typing-animation {
    border-right: none;
  }
}

/* ===== Print Styles ===== */
@media print {
  #matrix-canvas,
  .navbar,
  .back-to-top,
  .skip-link,
  .hero-cta,
  .cta-section {
    display: none !important;
  }

  body {
    background: #fff;
    color: #000;
  }

  section {
    padding: 1rem 0;
    page-break-inside: avoid;
  }
}