/* ===================================
   DESIGN SYSTEM & CSS VARIABLES
   =================================== */

:root {
  /* Cybernetic Color Palette */
  --color-bg-deep: hsl(0, 0%, 2%);
  --color-bg-card: hsl(0, 0%, 5%);
  --color-text-neon: hsl(180, 100%, 50%);
  /* Cyber Cyan */
  --color-text-dim: hsl(180, 30%, 60%);
  --color-accent-pink: hsl(320, 100%, 60%);

  /* Neon Glows */
  --glow-cyan: 0 0 10px rgba(0, 243, 255, 0.5), 0 0 20px rgba(0, 243, 255, 0.2);
  --glow-text: 0 0 8px rgba(0, 243, 255, 0.8);

  /* Gradients */
  --gradient-cyber: linear-gradient(90deg, var(--color-text-neon), var(--color-accent-pink));

  /* Technical Detail Variables */
  --grid-size: 40px;
  --scanline-speed: 8s;

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

  /* Typography - Monospace for Technical Feel */
  --font-primary: 'JetBrains Mono', 'Fira Code', 'Courier New', monospace;
  --font-size-xs: 0.875rem;
  --font-size-sm: 1rem;
  --font-size-md: 1.125rem;
  --font-size-lg: 1.5rem;
  --font-size-xl: 2rem;
  --font-size-2xl: 3rem;
  --font-size-3xl: 4rem;

  /* Borders */
  --border-cyber: 1px solid rgba(0, 243, 255, 0.3);
  --radius-sm: 2px;

  /* Transitions */
  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ===================================
   RESET & BASE STYLES
   =================================== */

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

html {
  scroll-behavior: smooth;
  overflow-x: hidden;
}

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

/* Cyber Backdrop: Grid and Scanlines */
body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image:
    linear-gradient(rgba(0, 243, 255, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 243, 255, 0.05) 1px, transparent 1px);
  background-size: var(--grid-size) var(--grid-size);
  z-index: -1;
  pointer-events: none;
}

body::after {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(rgba(18, 16, 16, 0) 50%,
      rgba(0, 0, 0, 0.1) 50%), linear-gradient(90deg,
      rgba(255, 0, 0, 0.02),
      rgba(0, 255, 0, 0.01),
      rgba(0, 0, 255, 0.02));
  background-size: 100% 4px, 3px 100%;
  z-index: 9999;
  pointer-events: none;
  opacity: 0.2;
}

.scanline {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100px;
  background: linear-gradient(0deg, rgba(0, 243, 255, 0) 0%, rgba(0, 243, 255, 0.1) 50%, rgba(0, 243, 255, 0) 100%);
  opacity: 0.1;
  z-index: 1000;
  pointer-events: none;
  animation: scanlineMove var(--scanline-speed) linear infinite;
}

@keyframes scanlineMove {
  0% {
    transform: translateY(-100px);
  }

  100% {
    transform: translateY(100vh);
  }
}

/* ===================================
   TYPOGRAPHY
   =================================== */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap');

h1,
h2,
h3,
h4,
h5,
h6 {
  font-weight: 700;
  line-height: 1.1;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--color-text-neon);
  text-shadow: var(--glow-text);
  margin-bottom: var(--spacing-sm);
}

h1 {
  font-size: var(--font-size-3xl);
  border-left: 5px solid var(--color-text-neon);
  padding-left: var(--spacing-sm);
}

h2 {
  font-size: var(--font-size-2xl);
  position: relative;
  display: inline-block;
}

h2::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 50px;
  height: 2px;
  background: var(--color-accent-pink);
}

h3 {
  font-size: var(--font-size-lg);
}

p {
  margin-bottom: var(--spacing-sm);
  color: var(--color-text-dim);
  font-size: var(--font-size-sm);
}

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

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

/* ===================================
   LAYOUT & CONTAINERS
   =================================== */

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

section {
  min-height: 100vh;
  padding: var(--spacing-xl) 0;
  display: flex;
  align-items: center;
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

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

/* ===================================
   NAVIGATION
   =================================== */

nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur));
  border-bottom: 1px solid var(--glass-border);
  padding: var(--spacing-sm) 0;
  transition: all var(--transition-normal);
}

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

.logo {
  font-size: var(--font-size-lg);
  font-weight: 800;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

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

.nav-links a {
  color: var(--color-text-secondary);
  font-weight: 500;
  transition: color var(--transition-fast);
  position: relative;
}

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

.nav-links a:hover,
.nav-links a.active {
  color: var(--color-text-primary);
}

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

.menu-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--color-text-primary);
  font-size: var(--font-size-lg);
  cursor: pointer;
}

/* ===================================
   HERO SECTION
   =================================== */

#hero {
  position: relative;
  text-align: center;
  padding-top: calc(var(--spacing-xl) + 60px);
}

.hero-content h1 {
  font-size: clamp(2.5rem, 8vw, 5rem);
  margin-bottom: var(--spacing-md);
  color: var(--color-text-neon);
  text-shadow: 0 0 20px rgba(0, 243, 255, 0.4);
}

.typing-text {
  display: inline-block;
  border-right: 3px solid var(--color-text-neon);
  animation: blink 0.7s step-end infinite;
}

.btn-primary {
  background: transparent;
  color: var(--color-text-neon);
  border: 1px solid var(--color-text-neon);
  box-shadow: var(--glow-cyan);
}

.btn-primary:hover {
  background: var(--color-text-neon);
  color: var(--color-bg-deep);
  box-shadow: 0 0 30px var(--color-text-neon);
}

.btn-secondary {
  background: transparent;
  color: var(--color-text-dim);
  border: 1px solid var(--color-text-dim);
}

.btn-secondary:hover {
  border-color: var(--color-accent-pink);
  color: var(--color-accent-pink);
}

/* ===================================
   ABOUT SECTION
   =================================== */

#about .container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-lg);
  align-items: center;
}

.about-image {
  position: relative;
}

.about-image img {
  width: 100%;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  border: 2px solid var(--glass-border);
}

.about-content h2 {
  background: var(--gradient-secondary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: var(--spacing-md);
}

.about-content p {
  font-size: var(--font-size-md);
  margin-bottom: var(--spacing-sm);
}

/* ===================================
   PROJECTS SECTION
   =================================== */

#projects {
  background: rgba(0, 0, 0, 0.2);
}

#projects h2 {
  text-align: center;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: var(--spacing-lg);
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-md);
}

.project-card {
  background: var(--color-bg-card);
  border: var(--border-cyber);
  border-radius: var(--radius-sm);
  padding: var(--spacing-md);
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
}

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

.project-card h3 {
  color: var(--color-text-neon);
  font-size: var(--font-size-md);
}

.tag {
  background: rgba(0, 243, 255, 0.1);
  color: var(--color-text-neon);
  border: 1px solid rgba(0, 243, 255, 0.3);
  padding: 0.2rem 0.5rem;
  font-size: 0.7rem;
  text-transform: uppercase;
}

.project-card p {
  margin-bottom: var(--spacing-md);
}

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

.tag {
  background: rgba(0, 200, 255, 0.2);
  color: var(--color-accent-cyan);
  padding: 0.25rem 0.75rem;
  border-radius: var(--radius-full);
  font-size: var(--font-size-xs);
  font-weight: 500;
}

/* ===================================
   SKILLS SECTION
   =================================== */

#skills h2 {
  text-align: center;
  color: var(--color-text-neon);
  text-shadow: var(--glow-text);
  margin-bottom: var(--spacing-lg);
}

.skill-category {
  background: var(--color-bg-card);
  padding: var(--spacing-md);
  border: var(--border-cyber);
  border-radius: var(--radius-sm);
  transition: var(--transition-normal);
}

.skill-category:hover {
  border-color: var(--color-accent-pink);
  box-shadow: 0 0 15px rgba(255, 0, 150, 0.2);
}

.skill-category h3 {
  color: var(--color-text-neon);
  margin-bottom: var(--spacing-md);
  font-size: var(--font-size-md);
  border-bottom: 1px solid rgba(0, 243, 255, 0.1);
  padding-bottom: 0.5rem;
}

/* ===================================
   CONTACT SECTION
   =================================== */

#contact {
  background: rgba(0, 0, 0, 0.2);
  text-align: center;
}

#contact h2 {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: var(--spacing-md);
}

#contact p {
  font-size: var(--font-size-lg);
  margin-bottom: var(--spacing-lg);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.social-links {
  display: flex;
  gap: var(--spacing-md);
  justify-content: center;
  flex-wrap: wrap;
}

.social-link {
  width: 50px;
  height: 50px;
  border-radius: var(--radius-sm);
  background: transparent;
  border: 1px solid var(--color-text-dim);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-md);
  transition: all var(--transition-normal);
  color: var(--color-text-dim);
}

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

/* ===================================
   FOOTER
   =================================== */

footer {
  background: var(--color-bg-primary);
  padding: var(--spacing-md) 0;
  text-align: center;
  border-top: 1px solid var(--glass-border);
}

footer p {
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
}

/* ===================================
   EDUCATION SECTION
   =================================== */

.education-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-md);
}

.education-item {
  background: var(--color-bg-card);
  border: var(--border-cyber);
  border-radius: var(--radius-sm);
  padding: var(--spacing-md);
  transition: all var(--transition-normal);
  position: relative;
}

.education-item::before {
  content: 'EDU_RECORD';
  position: absolute;
  top: 5px;
  right: 10px;
  font-size: 0.6rem;
  color: rgba(0, 243, 255, 0.2);
}

.education-item:hover {
  border-color: var(--color-text-neon);
  box-shadow: var(--glow-cyan);
}

.education-header h3 {
  font-size: var(--font-size-md);
  color: var(--color-text-neon);
}

.education-date {
  font-size: var(--font-size-xs);
  color: var(--color-accent-pink);
  font-weight: 600;
}

.education-school {
  font-size: var(--font-size-sm);
  color: var(--color-text-dim);
}

/* ===================================
   SKILLS SECTION REFINEMENT
   =================================== */

.skill-tags {
  display: flex;
  gap: var(--spacing-xs);
  flex-wrap: wrap;
  margin-bottom: var(--spacing-md);
}

.skill-category {
  background: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur));
  padding: var(--spacing-md);
  border-radius: var(--radius-md);
  border: 1px solid var(--glass-border);
}

/* ===================================
   SYSTEMS & MINDSET SECTIONS
   =================================== */

#systems,
#why-hire {
  padding: var(--spacing-xl) 0;
}

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

.system-box {
  background: var(--color-bg-card);
  border: var(--border-cyber);
  padding: var(--spacing-md);
  position: relative;
}

.system-box::before {
  content: '// PHILOSOPHY';
  position: absolute;
  top: 5px;
  right: 10px;
  font-size: 0.6rem;
  color: rgba(0, 243, 255, 0.2);
}

.system-box h3 {
  color: var(--color-text-neon);
  margin-bottom: var(--spacing-sm);
  font-size: var(--font-size-md);
}

.system-box p {
  font-size: 0.9rem;
  line-height: 1.6;
}

.mindset-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-lg);
  margin-top: var(--spacing-md);
}

.mindset-item strong {
  display: block;
  color: var(--color-text-neon);
  font-size: var(--font-size-lg);
  margin-bottom: 0.5rem;
  text-transform: uppercase;
}

/* ===================================
   CASE STUDY REFINEMENTS
   =================================== */

.case-study-details {
  margin-top: var(--spacing-md);
  display: grid;
  gap: var(--spacing-sm);
}

.detail-item {
  border-left: 2px solid var(--color-accent-pink);
  padding-left: var(--spacing-sm);
}

.detail-item strong {
  display: block;
  font-size: 0.75rem;
  color: var(--color-accent-pink);
  text-transform: uppercase;
  margin-bottom: 2px;
}

.detail-item p {
  font-size: 0.85rem;
  margin-bottom: 0;
}

#hero .hero-subtitle {
  font-size: var(--font-size-lg);
  color: var(--color-accent-pink);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 2px;
  margin-bottom: var(--spacing-sm);
}

@media (max-width: 768px) {
  :root {
    --font-size-3xl: 2.5rem;
    --font-size-2xl: 2rem;
    --spacing-xl: 3rem;
  }

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

  .nav-links {
    position: fixed;
    top: 60px;
    left: 0;
    right: 0;
    background: var(--color-bg-primary);
    flex-direction: column;
    padding: var(--spacing-md);
    border-bottom: 1px solid var(--glass-border);
    transform: translateY(-100%);
    opacity: 0;
    transition: all var(--transition-normal);
    pointer-events: none;
  }

  .nav-links.active {
    transform: translateY(0);
    opacity: 1;
    pointer-events: all;
  }

  .menu-toggle {
    display: block;
  }

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

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

@media (max-width: 480px) {
  .cta-buttons {
    flex-direction: column;
    width: 100%;
  }

  .btn {
    width: 100%;
  }
}