:root {
  /* Color Scheme */
  --text-color: #333;
  --background-color: #f4f4f4;
  --primary-color: white;
  --secondary-color: #FFC107;
  --accent-color: #FF573B;
  --card-bg: #f8f8f8;
  
  /* Typography */
  --font-family: 'Poppins', sans-serif;
  --font-size: clamp(14px, 2vw, 16px);
  
  /* Spacing */
  --section-padding: clamp(2rem, 5vw, 4rem);
  --container-width: min(1200px, 90%);
  --card-padding: clamp(1rem, 3vw, 1.5rem);
  
  /* Effects */
  --shadow-sm: 0 2px 5px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.15);
  --shadow-lg: 0 6px 12px rgba(0, 0, 0, 0.2);
  --transition: all 0.3s ease;
}

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

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

body {
  font-family: var(--font-family);
  font-size: var(--font-size);
  color: var(--text-color);
  background-color: var(--background-color);
  line-height: 1.6;
  padding: 1rem;
}

h1, h2, h3, h4 {
  font-weight: 600;
  line-height: 1.2;
}

h1 { font-size: clamp(1.8rem, 5vw, 2.5rem); }
h2 { font-size: clamp(1.5rem, 4vw, 2rem); }
h3 { font-size: clamp(1.2rem, 3vw, 1.5rem); }

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

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

/* Layout Components */
.container {
  width: var(--container-width);
  margin: 0 auto;
  padding: 0 1rem;
}

section {
  padding: var(--section-padding) 5%;
  margin-bottom: 2rem;
  background-color: var(--primary-color);
  border-radius: 8px;
  box-shadow: var(--shadow-sm);
  scroll-margin-top: 80px;
}

/* Navigation */
nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 5%;
  background-color: var(--primary-color);
  box-shadow: var(--shadow-sm);
  position: sticky;
  top: 0;
  z-index: 100;
}

.nav-brand {
  font-size: clamp(1.2rem, 4vw, 1.8rem);
  font-weight: 700;
  color: var(--accent-color);
}

.nav-links {
  display: flex;
  gap: 1.5rem;
  list-style: none;
}

.nav-links li a {
  color: var(--text-color);
  font-weight: 500;
  padding: 0.5rem;
  border-radius: 4px;
  transition: var(--transition);
}

.nav-links li a:hover {
  color: var(--accent-color);
  background-color: rgba(255, 87, 59, 0.1);
}

/* Hamburger Menu */
.hamburger {
  display: none;
  cursor: pointer;
  flex-direction: column;
  justify-content: space-between;
  width: 30px;
  height: 21px;
}

.bar {
  height: 3px;
  width: 100%;
  background-color: var(--accent-color);
  transition: var(--transition);
}

/* About Section */
.about {
  display: flex;
  align-items: center;
  gap: clamp(2rem, 5vw, 5rem);
  padding-top: 2rem;
}

.about .image img {
  width: clamp(150px, 30vw, 300px);
  height: clamp(150px, 30vw, 300px);
  border-radius: 50%;
  object-fit: cover;
  border: 3px solid white;
  transition: transform 0.3s ease;
}

.about .image img:hover {
  transform: scale(1.05);
}

/* Social Links */
.social-links {
  display: flex;
  gap: 1rem;
  margin-top: 2rem;
  flex-wrap: wrap;
}

.social-links a {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.25rem;
  border-radius: 4px;
  background-color: var(--card-bg);
  color: var(--text-color);
  font-weight: 500;
  transition: var(--transition);
  box-shadow: var(--shadow-sm);
}

.social-links a:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

/* Skills Grid */
.specialization-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
  margin-top: 2rem;
}

.specialty-card {
  background: var(--card-bg);
  padding: var(--card-padding);
  border-radius: 8px;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}

.specialty-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-md);
}

.specialty-icon {
  font-size: 2.5rem;
  color: var(--accent-color);
  margin-bottom: 1rem;
}

.specialty-card ul {
  padding-left: 1.5rem;
}

.specialty-card li {
  margin-bottom: 0.5rem;
  position: relative;
}

/* Projects - Flip Cards */
.projects-horizontal-scroll {
  display: flex;
  gap: 1.5rem;
  padding: 1rem 0;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
  scrollbar-color: var(--accent-color) transparent;
}

.projects-horizontal-scroll::-webkit-scrollbar {
  height: 5px;
}

.projects-horizontal-scroll::-webkit-scrollbar-thumb {
  background: var(--accent-color);
  border-radius: 10px;
}

.h-flip-card {
  width: clamp(200px, 40vw, 250px);
  height: clamp(150px, 30vw, 180px);
  flex-shrink: 0;
  perspective: 1000px;
  scroll-snap-align: start;
}

.h-flip-inner {
  position: relative;
  width: 100%;
  height: 100%;
  transition: transform 0.6s;
  transform-style: preserve-3d;
  border-radius: 10px;
}

.h-flip-card:hover .h-flip-inner {
  transform: rotateY(180deg);
}

.h-flip-front, .h-flip-back {
  position: absolute;
  width: 100%;
  height: 100%;
  backface-visibility: hidden;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  border-radius: 10px;
  padding: 1rem;
  box-shadow: var(--shadow-sm);
}

.h-flip-front {
  background: var(--primary-color);
}

.h-flip-front i {
  font-size: clamp(1.5rem, 4vw, 2.5rem);
  color: var(--accent-color);
  margin-bottom: 0.5rem;
}

.h-flip-front h3 {
  font-size: clamp(1rem, 3vw, 1.2rem);
  text-align: center;
}

.h-flip-back {
  background: linear-gradient(135deg, var(--accent-color) 0%, var(--secondary-color) 100%);
  transform: rotateY(180deg);
  color: white;
}

.h-flip-links {
  display: flex;
  gap: 1.5rem;
}

.h-flip-links a {
  color: white;
  font-size: 1.2rem;
  transition: var(--transition);
}

.h-flip-links a:hover {
  transform: scale(1.2);
}

/* Certificates Grid */
.certificates-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
  margin-top: 2rem;
}

.certificate-card {
  background: var(--primary-color);
  border-radius: 8px;
  box-shadow: var(--shadow-sm);
  padding: var(--card-padding);
  transition: var(--transition);
}

.certificate-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-md);
}

.certificate-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1rem;
}

.certificate-header img {
  height: 30px;
  max-width: 120px;
  object-fit: contain;
}

.certificate-badge {
  background: #28a745;
  color: white;
  padding: 0.25rem 0.5rem;
  border-radius: 12px;
  font-size: 0.75rem;
  font-weight: 500;
}

.skills-gained {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 1rem;
}

.skills-gained span {
  background: #f0f2f5;
  padding: 0.25rem 0.5rem;
  border-radius: 4px;
  font-size: 0.75rem;
  color: #495057;
}

.certificate-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 1rem;
  padding-top: 0.5rem;
  border-top: 1px solid #eee;
}

/* Contact Form */
.neon-form {
  max-width: 600px;
  margin: 0 auto;
  padding: var(--card-padding);
}

.input-group {
  position: relative;
  margin-bottom: 2rem;
}

.neon-input {
  width: 100%;
  padding: 1rem 1rem 1rem 3rem;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(0, 0, 0, 0.2);
  color: #000;
  font-size: 1rem;
  transition: var(--transition);
  border-radius: 4px;
}

.neon-input:focus {
  outline: none;
  border-color: var(--accent-color);
  box-shadow: 0 10px 20px -10px rgba(255, 87, 51, 0.3);
}

.neon-label {
  position: absolute;
  top: 1rem;
  left: 3rem;
  color: #000;
  pointer-events: none;
  transition: var(--transition);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.neon-input:focus + .neon-label,
.neon-input:not(:placeholder-shown) + .neon-label {
  top: -1.2rem;
  left: 0;
  font-size: 0.8rem;
  color: var(--accent-color);
}

.input-highlight {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--accent-color);
  transition: width 0.4s ease;
}

.neon-input:focus ~ .input-highlight {
  width: 100%;
}

.cyber-button {
  position: relative;
  padding: 1rem 2rem;
  background: linear-gradient(45deg, transparent 5%, var(--accent-color) 5%);
  border: 0;
  color: #000;
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: 1px;
  cursor: pointer;
  box-shadow: 6px 0 0 var(--secondary-color);
  outline: transparent;
  transition: var(--transition);
  overflow: hidden;
  border-radius: 4px;
}

.cyber-button:hover {
  background: linear-gradient(45deg, transparent 5%, var(--secondary-color) 5%);
  box-shadow: 6px 0 0 var(--accent-color);
  transform: translateY(-3px);
}

/* Footer */
.site-footer {
  padding: 2rem 0;
  background-color: #f8f9fa;
  margin-top: 3rem;
}

.footer-content {
  max-width: var(--container-width);
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 2rem;
  padding: 0 1.5rem;
}

.footer-nav, .footer-connect {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.footer-title {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 1rem;
}

.footer-nav a {
  color: #555;
  transition: var(--transition);
}

.footer-nav a:hover {
  color: var(--accent-color);
  transform: translateX(5px);
}

.social-icons a {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: #555;
  transition: var(--transition);
}

.social-icons a:hover {
  color: var(--accent-color);
  transform: translateX(5px);
}

.footer-bottom {
  text-align: center;
  margin-top: 2rem;
  padding-top: 1.5rem;
  border-top: 1px solid rgba(0, 0, 0, 0.05);
  color: #777;
}

/* Responsive Breakpoints */
@media (max-width: 768px) {
  /* Mobile Navigation */
  .hamburger {
    display: flex;
  }
  
  .nav-links {
    position: fixed;
    top: 70px;
    left: -100%;
    width: 100%;
    height: calc(100vh - 70px);
    background-color: var(--primary-color);
    flex-direction: column;
    align-items: center;
    padding: 2rem 0;
    gap: 2rem;
    transition: left 0.3s ease;
    box-shadow: var(--shadow-md);
  }
  
  .nav-links.active {
    left: 0;
  }

  /* Stack About Section */
  .about {
    flex-direction: column;
    text-align: center;
  }

  /* Adjust Footer */
  .footer-content {
    grid-template-columns: 1fr;
    text-align: center;
  }
}

@media (max-width: 480px) {
  /* Extra Small Devices */
  body {
    padding: 0.5rem;
  }

  section {
    padding: 1.5rem;
  }

  .social-links {
    justify-content: center;
  }

  .h-flip-card {
    width: 180px;
    height: 140px;
  }
}

/* Animations */
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

.fade-in {
  animation: fadeIn 0.5s ease-in;
}

/* Button Particles */
.button-particle {
  position: absolute;
  background: white;
  border-radius: 50%;
  pointer-events: none;
  animation: float-up 1s ease-out forwards;
}

@keyframes float-up {
  0% {
    transform: translate(0, 0);
    opacity: 1;
  }
  100% {
    transform: translate(var(--tx, 0), var(--ty, -100px));
    opacity: 0;
  }
}

/* Accessibility */
:focus-visible {
  outline: 2px solid var(--accent-color);
  outline-offset: 2px;
}

/* Print Styles */
@media print {
  nav, footer {
    display: none;
  }
  
  body {
    background: white;
    color: black;
    padding: 0;
    font-size: 12pt;
  }
  
  section {
    box-shadow: none;
    page-break-inside: avoid;
    margin-bottom: 1cm;
  }
}