/* ============================================
   VINIT'S PORTFOLIO - TECH-INSPIRED STYLESHEET
   ============================================ */

/* ========================
   1. ROOT & CSS VARIABLES
   ======================== */

:root {
  /* Color Palette */
  --primary-dark: #0a0e27;
  --dark-bg: #1a1a2e;
  --dark-secondary: #16213e;
  --neon-cyan: #00d4ff;
  --neon-purple: #a855f7;
  --neon-green: #00ff88;
  --neon-pink: #ff006e;
  --accent-yellow: #ffd60a;
  --text-light: #e0e0e0;
  --text-muted: #a0a0a0;
  --success: #00ff88;
  --warning: #ffd60a;

  /* Typography */
  --font-main: 'Inter', sans-serif;
  --font-heading: 'Poppins', sans-serif;
  --font-mono: 'Space Mono', monospace;

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

  /* Border Radius */
  --radius-sm: 0.5rem;
  --radius-md: 1rem;
  --radius-lg: 1.5rem;

  /* Transitions */
  --transition-fast: 0.2s ease-in-out;
  --transition-normal: 0.3s ease-in-out;
  --transition-smooth: 0.5s ease-in-out;
}

/* ========================
   2. RESET & GLOBAL STYLES
   ======================== */

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-main);
  background: linear-gradient(135deg, var(--primary-dark) 0%, var(--dark-bg) 50%, var(--dark-secondary) 100%);
  color: var(--text-light);
  line-height: 1.6;
  overflow-x: hidden;
  background-attachment: fixed;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
  width: 10px;
}

::-webkit-scrollbar-track {
  background: var(--dark-bg);
}

::-webkit-scrollbar-thumb {
  background: linear-gradient(180deg, var(--neon-cyan), var(--neon-purple));
  border-radius: 10px;
}

/* ========================
   3. TYPOGRAPHY
   ======================== */

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  margin-bottom: var(--spacing-md);
  background: linear-gradient(135deg, var(--neon-cyan), var(--neon-purple));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

h1 {
  font-size: clamp(2.5rem, 6vw, 4rem);
  line-height: 1.2;
}

h2 {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  margin-bottom: var(--spacing-lg);
}

h3 {
  font-size: 1.5rem;
}

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

/* ========================
   4. BUTTONS & LINKS
   ======================== */

button, a.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-sm) var(--spacing-lg);
  border: 2px solid transparent;
  border-radius: var(--radius-md);
  font-family: var(--font-main);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-normal);
  text-decoration: none;
  gap: var(--spacing-xs);
}

.btn-primary {
  background: linear-gradient(135deg, var(--neon-cyan), var(--neon-purple));
  color: var(--primary-dark);
  border: 2px solid var(--neon-cyan);
  box-shadow: 0 0 20px rgba(0, 212, 255, 0.3);
}

.btn-primary:hover {
  box-shadow: 0 0 30px rgba(0, 212, 255, 0.6), inset 0 0 20px rgba(255, 255, 255, 0.1);
  transform: translateY(-2px);
}

.btn-secondary {
  background: transparent;
  color: var(--neon-cyan);
  border: 2px solid var(--neon-cyan);
  box-shadow: 0 0 15px rgba(0, 212, 255, 0.2);
}

.btn-secondary:hover {
  background: rgba(0, 212, 255, 0.1);
  box-shadow: 0 0 25px rgba(0, 212, 255, 0.5);
  transform: translateY(-2px);
}

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

a:hover {
  color: var(--neon-purple);
}

/* ========================
   5. NAVIGATION BAR
   ======================== */

nav {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(10, 14, 39, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(0, 212, 255, 0.2);
  padding: var(--spacing-md) var(--spacing-lg);
  box-shadow: 0 4px 30px rgba(0, 212, 255, 0.1);
}

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

.nav-logo {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--neon-cyan), var(--neon-purple));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

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

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

.nav-menu a::after {
  content: '';
  position: absolute;
  bottom: -5px;
  left: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--neon-cyan), var(--neon-purple));
  transition: width var(--transition-fast);
}

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

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

.hamburger {
  display: none;
  flex-direction: column;
  cursor: pointer;
  gap: 5px;
}

.hamburger span {
  width: 25px;
  height: 3px;
  background: var(--neon-cyan);
  border-radius: 3px;
  transition: all var(--transition-fast);
}

.hamburger.active span:nth-child(1) {
  transform: rotate(45deg) translate(8px, 8px);
}

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

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

/* ========================
   6. HERO SECTION
   ======================== */

#home {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  padding: var(--spacing-xl) var(--spacing-lg);
}

.hero-background {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
  background: linear-gradient(135deg, rgba(0, 212, 255, 0.05), rgba(168, 85, 247, 0.05));
}

.particle {
  position: absolute;
  width: 2px;
  height: 2px;
  background: var(--neon-cyan);
  border-radius: 50%;
  opacity: 0.5;
  animation: float 20s infinite linear;
}

@keyframes float {
  0% {
    transform: translateY(100vh) translateX(0);
    opacity: 0;
  }
  10% {
    opacity: 0.5;
  }
  90% {
    opacity: 0.5;
  }
  100% {
    transform: translateY(-100vh) translateX(100px);
    opacity: 0;
  }
}

.hero-content {
  text-align: center;
  z-index: 10;
  max-width: 800px;
}

.profile-pic {
  width: 180px;
  height: 180px;
  margin: 0 auto var(--spacing-xl);
  border-radius: 50%;
  border: 3px solid var(--neon-cyan);
  box-shadow: 0 0 40px rgba(0, 212, 255, 0.5), inset 0 0 40px rgba(0, 212, 255, 0.2);
  overflow: hidden;
  background: linear-gradient(135deg, rgba(0, 212, 255, 0.1), rgba(168, 85, 247, 0.1));
  animation: glow-pulse 3s ease-in-out infinite;
}

@keyframes glow-pulse {
  0%, 100% {
    box-shadow: 0 0 40px rgba(0, 212, 255, 0.5), inset 0 0 40px rgba(0, 212, 255, 0.2);
  }
  50% {
    box-shadow: 0 0 60px rgba(168, 85, 247, 0.6), inset 0 0 60px rgba(168, 85, 247, 0.3);
  }
}

.profile-pic img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-tagline {
  font-family: var(--font-mono);
  font-size: 1.25rem;
  color: var(--neon-cyan);
  margin-bottom: var(--spacing-lg);
  min-height: 2em;
}

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

@keyframes typing-blink {
  0%, 49% {
    border-right-color: var(--neon-purple);
  }
  50%, 100% {
    border-right-color: transparent;
  }
}

.hero-description {
  font-size: 1.1rem;
  color: var(--text-light);
  margin-bottom: var(--spacing-xl);
  line-height: 1.8;
}

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

/* ========================
   7. SECTION STYLING
   ======================== */

section {
  padding: var(--spacing-2xl) var(--spacing-lg);
  max-width: 1200px;
  margin: 0 auto;
  scroll-margin-top: 60px;
}

section > h2 {
  text-align: center;
  margin-bottom: var(--spacing-2xl);
  position: relative;
  padding-bottom: var(--spacing-lg);
}

section > h2::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 100px;
  height: 3px;
  background: linear-gradient(90deg, var(--neon-cyan), var(--neon-purple));
  border-radius: 10px;
}

.fade-in {
  opacity: 0;
  animation: fadeInUp 0.6s ease-out forwards;
}

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

/* ========================
   8. ABOUT SECTION
   ======================== */

#about {
  background: linear-gradient(180deg, transparent, rgba(0, 212, 255, 0.05));
}

.about-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-2xl);
  align-items: center;
}

.about-text {
  font-size: 1.05rem;
  line-height: 1.8;
}

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

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

.timeline::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: linear-gradient(180deg, var(--neon-cyan), var(--neon-purple));
}

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

.timeline-item::before {
  content: '';
  position: absolute;
  left: -9px;
  top: 5px;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--dark-bg);
  border: 3px solid var(--neon-cyan);
  box-shadow: 0 0 15px rgba(0, 212, 255, 0.5);
}

.timeline-item h4 {
  background: none;
  -webkit-text-fill-color: unset;
  color: var(--neon-cyan);
  margin-bottom: var(--spacing-xs);
}

.timeline-item p {
  color: var(--text-muted);
  font-size: 0.95rem;
}

/* ========================
   9. SKILLS SECTION
   ======================== */

#skills {
  background: linear-gradient(180deg, rgba(0, 212, 255, 0.05), transparent);
}

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

.skill-category {
  background: rgba(26, 26, 46, 0.5);
  border: 1px solid rgba(0, 212, 255, 0.2);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  transition: all var(--transition-normal);
  backdrop-filter: blur(10px);
}

.skill-category:hover {
  border-color: var(--neon-cyan);
  box-shadow: 0 0 30px rgba(0, 212, 255, 0.3);
  transform: translateY(-5px);
}

.skill-category h3 {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-md);
  background: none;
  -webkit-text-fill-color: unset;
  color: var(--neon-cyan);
}

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

.skill-tag {
  display: inline-block;
  padding: var(--spacing-xs) var(--spacing-md);
  background: rgba(0, 212, 255, 0.1);
  border: 1px solid var(--neon-cyan);
  border-radius: var(--radius-md);
  color: var(--text-light);
  font-size: 0.9rem;
  transition: all var(--transition-fast);
}

.skill-tag:hover {
  background: rgba(0, 212, 255, 0.2);
  box-shadow: 0 0 15px rgba(0, 212, 255, 0.3);
}

.skill-tag.learning {
  border-color: var(--neon-purple);
  background: rgba(168, 85, 247, 0.1);
}

.skill-tag.learning:hover {
  background: rgba(168, 85, 247, 0.2);
  box-shadow: 0 0 15px rgba(168, 85, 247, 0.3);
}

.progress-bar {
  width: 100%;
  height: 8px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 10px;
  overflow: hidden;
  margin-top: var(--spacing-sm);
}

.progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--neon-cyan), var(--neon-purple));
  border-radius: 10px;
  animation: slideIn 1s ease-out forwards;
}

@keyframes slideIn {
  from {
    width: 0;
  }
  to {
    width: var(--width);
  }
}

/* ========================
   10. SERVICES SECTION
   ======================== */

#services {
  background: linear-gradient(180deg, transparent, rgba(168, 85, 247, 0.05));
}

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

.service-card {
  background: rgba(26, 26, 46, 0.5);
  border: 1px solid rgba(0, 212, 255, 0.2);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  text-align: center;
  transition: all var(--transition-normal);
  backdrop-filter: blur(10px);
}

.service-card:hover {
  border-color: var(--neon-purple);
  box-shadow: 0 0 40px rgba(168, 85, 247, 0.4), inset 0 0 20px rgba(168, 85, 247, 0.1);
  transform: translateY(-10px);
}

.service-icon {
  font-size: 3rem;
  margin-bottom: var(--spacing-md);
  filter: drop-shadow(0 0 10px rgba(0, 212, 255, 0.3));
  transition: all var(--transition-normal);
}

.service-card:hover .service-icon {
  filter: drop-shadow(0 0 20px rgba(168, 85, 247, 0.6));
  transform: scale(1.1) rotate(5deg);
}

.service-card h3 {
  background: none;
  -webkit-text-fill-color: unset;
  color: var(--neon-cyan);
  margin-bottom: var(--spacing-md);
}

.service-card p {
  color: var(--text-light);
  margin-bottom: var(--spacing-md);
}

/* ========================
   11. PROJECTS SECTION
   ======================== */

#projects {
  background: linear-gradient(180deg, rgba(168, 85, 247, 0.05), transparent);
}

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

.project-card {
  background: rgba(26, 26, 46, 0.5);
  border: 1px solid rgba(0, 212, 255, 0.2);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  transition: all var(--transition-normal);
  backdrop-filter: blur(10px);
  position: relative;
  overflow: hidden;
}

.project-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(0, 212, 255, 0.2), transparent);
  transition: left 0.5s ease;
}

.project-card:hover::before {
  left: 100%;
}

.project-card:hover {
  border-color: var(--neon-cyan);
  box-shadow: 0 0 30px rgba(0, 212, 255, 0.3);
  transform: translateY(-5px);
}

.project-badge {
  display: inline-block;
  padding: var(--spacing-xs) var(--spacing-md);
  background: linear-gradient(135deg, var(--neon-cyan), var(--neon-purple));
  color: var(--primary-dark);
  border-radius: var(--radius-md);
  font-size: 0.75rem;
  font-weight: 700;
  margin-bottom: var(--spacing-md);
}

.project-card h3 {
  background: none;
  -webkit-text-fill-color: unset;
  color: var(--neon-cyan);
  margin-bottom: var(--spacing-sm);
}

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

.coming-soon-message {
  text-align: center;
  padding: var(--spacing-2xl) var(--spacing-lg);
  background: rgba(0, 212, 255, 0.05);
  border: 2px dashed var(--neon-cyan);
  border-radius: var(--radius-lg);
  margin-top: var(--spacing-xl);
}

.coming-soon-message h3 {
  background: none;
  -webkit-text-fill-color: unset;
  color: var(--neon-purple);
}

/* ========================
   12. CONTACT SECTION
   ======================== */

#contact {
  background: linear-gradient(180deg, transparent, rgba(0, 212, 255, 0.05));
}

.contact-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-2xl);
}

.contact-cards {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-lg);
}

.contact-card {
  background: rgba(26, 26, 46, 0.5);
  border: 1px solid rgba(0, 212, 255, 0.2);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  text-align: center;
  transition: all var(--transition-normal);
  backdrop-filter: blur(10px);
}

.contact-card:hover {
  border-color: var(--neon-cyan);
  box-shadow: 0 0 30px rgba(0, 212, 255, 0.3);
  transform: translateY(-5px);
}

.contact-icon {
  font-size: 2rem;
  margin-bottom: var(--spacing-md);
  filter: drop-shadow(0 0 10px rgba(0, 212, 255, 0.3));
}

.contact-card h3 {
  background: none;
  -webkit-text-fill-color: unset;
  color: var(--neon-cyan);
  margin-bottom: var(--spacing-sm);
}

.contact-card a {
  color: var(--text-light);
  transition: color var(--transition-fast);
}

.contact-card a:hover {
  color: var(--neon-purple);
}

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

.form-group {
  display: flex;
  flex-direction: column;
}

.form-group label {
  margin-bottom: var(--spacing-xs);
  color: var(--neon-cyan);
  font-weight: 600;
}

.form-group input,
.form-group textarea {
  padding: var(--spacing-md);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(0, 212, 255, 0.2);
  border-radius: var(--radius-md);
  color: var(--text-light);
  font-family: var(--font-main);
  transition: all var(--transition-fast);
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--neon-cyan);
  box-shadow: 0 0 20px rgba(0, 212, 255, 0.3);
  background: rgba(0, 212, 255, 0.05);
}

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

.form-group button {
  margin-top: var(--spacing-md);
}

/* ========================
   13. FOOTER
   ======================== */

footer {
  background: rgba(10, 14, 39, 0.95);
  border-top: 1px solid rgba(0, 212, 255, 0.2);
  padding: var(--spacing-xl) var(--spacing-lg);
  text-align: center;
}

.footer-content {
  max-width: 1200px;
  margin: 0 auto;
}

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

.footer-socials a {
  width: 50px;
  height: 50px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 2px solid var(--neon-cyan);
  border-radius: 50%;
  transition: all var(--transition-normal);
  font-size: 1.25rem;
}

.footer-socials a:hover {
  background: rgba(0, 212, 255, 0.1);
  box-shadow: 0 0 20px rgba(0, 212, 255, 0.5);
  transform: translateY(-5px);
}

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

/* ========================
   14. RESPONSIVE DESIGN
   ======================== */

@media (max-width: 768px) {
  .nav-menu {
    display: none;
    position: fixed;
    left: 0;
    top: 60px;
    flex-direction: column;
    background: rgba(10, 14, 39, 0.98);
    width: 100%;
    text-align: center;
    gap: 0;
  }

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

  .nav-menu a {
    display: block;
    padding: var(--spacing-md);
    border-bottom: 1px solid rgba(0, 212, 255, 0.1);
  }

  .hamburger {
    display: flex;
  }

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

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

  .hero-buttons {
    gap: var(--spacing-sm);
  }

  .hero-buttons .btn {
    font-size: 0.9rem;
    padding: var(--spacing-sm) var(--spacing-md);
  }

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

  section {
    padding: var(--spacing-xl) var(--spacing-md);
  }
}

@media (max-width: 480px) {
  :root {
    --spacing-xl: 2rem;
    --spacing-2xl: 2.5rem;
  }

  h1 {
    font-size: 2rem;
  }

  h2 {
    font-size: 1.5rem;
  }

  .profile-pic {
    width: 140px;
    height: 140px;
  }

  .hero-tagline {
    font-size: 1rem;
  }

  .hero-description {
    font-size: 1rem;
  }

  .footer-socials {
    gap: var(--spacing-md);
  }

  .footer-socials a {
    width: 45px;
    height: 45px;
    font-size: 1rem;
  }
}