/* ===== CSS VARIABLES & THEME SYSTEM ===== */
:root {
  /* Light Theme Colors */
  --primary-color: #2563eb;
  --secondary-color: #3b82f6;
  --accent-color: #1d4ed8;
  --bg-primary: #ffffff;
  --bg-secondary: #f8fafc;
  --bg-tertiary: #f1f5f9;
  --text-primary: #1e293b;
  --text-secondary: #64748b;
  --text-muted: #94a3b8;
  --border-color: #e2e8f0;
  --shadow-light: rgba(0, 0, 0, 0.1);
  --shadow-medium: rgba(0, 0, 0, 0.15);
  --shadow-heavy: rgba(0, 0, 0, 0.25);
  
  /* Professional Background Patterns */
  --bg-pattern-light: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23f1f5f9' fill-opacity='0.4'%3E%3Ccircle cx='30' cy='30' r='2'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
  --bg-pattern-dark: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23334155' fill-opacity='0.3'%3E%3Ccircle cx='30' cy='30' r='2'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
  
  /* Gradients */
  --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  --gradient-secondary: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
  --gradient-accent: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
  --gradient-hero: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  --gradient-hero-overlay: linear-gradient(135deg, rgba(102, 126, 234, 0.9) 0%, rgba(118, 75, 162, 0.9) 100%);
  
  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;
  
  /* Spacing */
  --section-padding: 5rem 0;
  --container-padding: 0 2rem;
}

/* Dark Theme */
[data-theme="dark"] {
  --primary-color: #3b82f6;
  --secondary-color: #60a5fa;
  --accent-color: #2563eb;
  --bg-primary: #0f172a;
  --bg-secondary: #1e293b;
  --bg-tertiary: #334155;
  --text-primary: #f8fafc;
  --text-secondary: #cbd5e1;
  --text-muted: #94a3b8;
  --border-color: #334155;
  --shadow-light: rgba(0, 0, 0, 0.3);
  --shadow-medium: rgba(0, 0, 0, 0.4);
  --shadow-heavy: rgba(0, 0, 0, 0.6);
  
  --gradient-hero: linear-gradient(135deg, #1e293b 0%, #334155 100%);
  --gradient-hero-overlay: linear-gradient(135deg, rgba(30, 41, 59, 0.95) 0%, rgba(51, 65, 85, 0.95) 100%);
}

/* ===== GLOBAL STYLES ===== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: var(--font-primary);
  line-height: 1.6;
  color: var(--text-primary);
  background: var(--bg-primary);
  background-image: var(--bg-pattern-dark);
  transition: var(--transition-normal);
  overflow-x: hidden;
}

[data-theme="light"] body {
  background-image: var(--bg-pattern-light);
}

[data-theme="dark"] body {
  background-image: var(--bg-pattern-dark);
}

/* ===== HERO SECTION ===== */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  background: var(--gradient-hero);
  background-attachment: fixed;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--gradient-hero-overlay);
  z-index: 1;
}

.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  color: white;
}

/* Enhanced 3D Profile Card Styles */
.profile-3d-container {
  perspective: 1200px;
  width: 100%;
  display: flex;
  justify-content: center;
  position: relative;
  height: 400px;
}

.profile-card-3d {
  position: relative;
  width: 300px;
  height: 350px;
  transform-style: preserve-3d;
  transition: transform 0.6s ease-in-out;
  cursor: pointer;
}

.profile-card-3d:hover {
  transform: rotateY(180deg) scale(1.05);
}

.profile-card-3d:hover .card-front,
.profile-card-3d:hover .card-back {
  pointer-events: none;
}

.card-front, .card-back {
  position: absolute;
  width: 100%;
  height: 100%;
  backface-visibility: hidden;
  border-radius: 20px;
  overflow: hidden;
  box-shadow: 0 25px 50px rgba(0, 0, 0, 0.3);
  border: 2px solid rgba(255, 255, 255, 0.1);
}

.card-front {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  position: relative;
}

.card-front img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 18px;
  transform: rotate(0deg);
  object-position: center center;
}

.card-glow {
  position: absolute;
  top: -2px;
  left: -2px;
  right: -2px;
  bottom: -2px;
  background: linear-gradient(45deg, #ff6b6b, #4ecdc4, #45b7d1, #96ceb4, #ffeaa7);
  border-radius: 22px;
  z-index: -1;
  animation: glow-rotate 3s linear infinite;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.profile-card-3d:hover .card-glow {
  opacity: 1;
}

@keyframes glow-rotate {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

.card-back {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  transform: rotateY(180deg);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.tech-icons {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
  width: 100%;
}

.tech-icon-3d {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  padding: 15px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 15px;
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.2);
  transition: all 0.3s ease;
  transform-style: preserve-3d;
}

.tech-icon-3d:hover {
  transform: translateZ(20px) rotateX(10deg);
  background: rgba(255, 255, 255, 0.2);
}

.tech-icon-3d i {
  font-size: 2rem;
  color: white;
  animation: bounce-3d 2s ease-in-out infinite;
}

.tech-icon-3d span {
  font-size: 0.8rem;
  color: white;
  font-weight: 600;
  text-align: center;
}

@keyframes bounce-3d {
  0%, 100% { transform: translateY(0) rotateX(0); }
  50% { transform: translateY(-10px) rotateX(15deg); }
}

/* Enhanced Floating Elements */
.floating-elements {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 1;
}

.floating-icon {
  position: absolute;
  width: 60px;
  height: 60px;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 15px 35px rgba(102, 126, 234, 0.4);
  animation: float3d 6s ease-in-out infinite;
  cursor: pointer;
  pointer-events: auto;
  transition: all 0.3s ease;
  border: 2px solid rgba(255, 255, 255, 0.2);
}

.floating-icon:hover {
  transform: scale(1.2) translateZ(30px);
  box-shadow: 0 20px 40px rgba(102, 126, 234, 0.6);
}

.floating-icon i {
  font-size: 1.5rem;
  color: white;
  transition: all 0.3s ease;
}

.tech-logo {
  width: 24px;
  height: 24px;
  color: white;
  transition: all 0.3s ease;
}

.floating-tooltip {
  position: absolute;
  bottom: -35px;
  left: 50%;
  transform: translateX(-50%);
  background: rgba(0, 0, 0, 0.8);
  color: white;
  padding: 5px 10px;
  border-radius: 5px;
  font-size: 0.8rem;
  opacity: 0;
  transition: opacity 0.3s ease;
  white-space: nowrap;
}

.floating-icon:hover .floating-tooltip {
  opacity: 1;
}

/* Positioning for floating icons */
.tech-java { top: 5%; right: -5%; animation-delay: 0s; }
.tech-python { top: 25%; right: -8%; animation-delay: 1s; }
.tech-js { bottom: 35%; left: -8%; animation-delay: 2s; }
.tech-mysql { top: 45%; left: -5%; animation-delay: 3s; }
.tech-react { bottom: 15%; right: -10%; animation-delay: 4s; }
.tech-git { top: 65%; left: -12%; animation-delay: 5s; }

@keyframes float3d {
  0%, 100% {
    transform: translateY(0px) rotateZ(0deg) rotateX(0deg);
  }
  25% {
    transform: translateY(-20px) rotateZ(5deg) rotateX(10deg);
  }
  50% {
    transform: translateY(-10px) rotateZ(-5deg) rotateX(-5deg);
  }
  75% {
    transform: translateY(-15px) rotateZ(3deg) rotateX(8deg);
  }
}

/* 3D Geometric Shapes */
.geometric-shapes {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 0;
}

.shape-cube, .shape-pyramid, .shape-sphere {
  position: absolute;
  opacity: 0.1;
  animation: geometric-float 8s ease-in-out infinite;
}

.shape-cube {
  width: 40px;
  height: 40px;
  background: linear-gradient(45deg, #667eea, #764ba2);
  top: 20%;
  right: 15%;
  animation-delay: 0s;
  transform-style: preserve-3d;
}

.shape-cube::before {
  content: '';
  position: absolute;
  width: 40px;
  height: 40px;
  background: linear-gradient(45deg, #764ba2, #667eea);
  transform: rotateY(90deg) translateZ(20px);
}

.shape-pyramid {
  width: 0;
  height: 0;
  border-left: 20px solid transparent;
  border-right: 20px solid transparent;
  border-bottom: 35px solid #667eea;
  bottom: 25%;
  left: 20%;
  animation-delay: 2s;
}

.shape-sphere {
  width: 35px;
  height: 35px;
  background: radial-gradient(circle, #764ba2, #667eea);
  border-radius: 50%;
  top: 70%;
  right: 25%;
  animation-delay: 4s;
}

@keyframes geometric-float {
  0%, 100% {
    transform: translateY(0px) rotate(0deg);
  }
  33% {
    transform: translateY(-15px) rotate(120deg);
  }
  66% {
    transform: translateY(-8px) rotate(240deg);
  }
}

/* Professional Loading Animation */
.loading-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9999;
  transition: opacity 0.5s ease;
}

.loading-spinner {
  width: 60px;
  height: 60px;
  border: 3px solid rgba(255, 255, 255, 0.3);
  border-top: 3px solid white;
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

/* Responsive Design for 3D Elements */
@media (max-width: 768px) {
  .profile-3d-container {
    height: 350px;
    perspective: 800px;
  }
  
  .profile-card-3d {
    width: 250px;
    height: 300px;
  }
  
  .floating-icon {
    width: 45px;
    height: 45px;
  }
  
  .floating-icon i {
    font-size: 1.2rem;
  }
  
  .tech-java, .tech-python, .tech-react { right: -15%; }
  .tech-js, .tech-mysql, .tech-git { left: -15%; }
  
  .card-3d {
    padding: 1.5rem;
  }
  
  .section {
    padding: 3rem 0;
  }
}
h5 { font-size: var(--font-size-xl); }
h6 { font-size: var(--font-size-lg); }

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

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

a:hover {
  color: var(--primary-dark);
}

/* ===== UTILITY CLASSES ===== */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }

.hidden { display: none; }
.visible { display: block; }

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

@keyframes slideInLeft {
  from { opacity: 0; transform: translateX(-50px); }
  to { opacity: 1; transform: translateX(0); }
}

@keyframes slideInRight {
  from { opacity: 0; transform: translateX(50px); }
  to { opacity: 1; transform: translateX(0); }
}

@keyframes pulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.05); }
}

@keyframes bounce {
  0%, 20%, 53%, 80%, 100% { transform: translateY(0); }
  40%, 43% { transform: translateY(-10px); }
  70% { transform: translateY(-5px); }
  90% { transform: translateY(-2px); }
}

@keyframes rotate {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

@keyframes float {
  0%, 100% { transform: translateY(0px); }
  50% { transform: translateY(-10px); }
}

/* Animation Classes */
.animate-fadeIn { animation: fadeIn 0.6s ease-out; }
.animate-slideInLeft { animation: slideInLeft 0.6s ease-out; }
.animate-slideInRight { animation: slideInRight 0.6s ease-out; }
.animate-pulse { animation: pulse 2s infinite; }
.animate-bounce { animation: bounce 1s infinite; }
.animate-float { animation: float 3s ease-in-out infinite; }

/* ===== LOADING SCREEN ===== */
#loading-screen {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--bg-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9999;
  transition: opacity var(--transition-slow);
}

.loader {
  text-align: center;
}

.loader-circle {
  width: 50px;
  height: 50px;
  border: 3px solid var(--border-color);
  border-top: 3px solid var(--primary-color);
  border-radius: 50%;
  animation: rotate 1s linear infinite;
  margin: 0 auto var(--spacing-md);
}

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

/* ===== BUTTONS ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-md) var(--spacing-xl);
  font-size: var(--font-size-base);
  font-weight: 500;
  text-decoration: none;
  border: none;
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: all var(--transition-fast);
  position: relative;
  overflow: hidden;
}

.btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
  transition: left var(--transition-slow);
}

.btn:hover::before {
  left: 100%;
}

.btn-primary {
  background: var(--gradient-primary);
  color: var(--text-inverse);
  box-shadow: var(--shadow-md);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.btn-secondary {
  background: var(--gradient-secondary);
  color: var(--text-inverse);
  box-shadow: var(--shadow-md);
}

.btn-secondary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.btn-outline {
  background: transparent;
  color: var(--primary-color);
  border: 2px solid var(--primary-color);
}

.btn-outline:hover {
  background: var(--primary-color);
  color: var(--text-inverse);
  transform: translateY(-2px);
}

/* ===== SECTION STYLES ===== */
section {
  padding: var(--spacing-3xl) 0;
  position: relative;
}

.section-header {
  text-align: center;
  margin-bottom: var(--spacing-3xl);
}

.section-title {
  font-size: var(--font-size-4xl);
  font-weight: 700;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: var(--spacing-md);
}

.section-subtitle {
  font-size: var(--font-size-lg);
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

/* ===== NAVIGATION STYLES ===== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  background: var(--bg-overlay);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-color);
  z-index: var(--z-fixed);
  transition: all var(--transition-normal);
}

.navbar.scrolled {
  background: var(--bg-card);
  box-shadow: var(--shadow-lg);
}

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

.nav-logo a {
  font-family: var(--font-secondary);
  font-size: var(--font-size-xl);
  font-weight: 700;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  text-decoration: none;
}

.nav-menu {
  display: flex;
  list-style: none;
  gap: var(--spacing-xl);
  margin: 0;
  padding: 0;
}

.nav-link {
  position: relative;
  color: var(--text-primary);
  font-weight: 500;
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

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

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

.nav-link:hover::before,
.nav-link.active::before {
  width: 100%;
}

.nav-controls {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.theme-toggle {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.theme-toggle:hover {
  background: var(--primary-color);
  color: var(--text-inverse);
  transform: scale(1.1);
}

.hamburger {
  display: none;
  flex-direction: column;
  cursor: pointer;
  gap: 4px;
}

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

.hamburger.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

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

.hamburger.active span:nth-child(3) {
  transform: rotate(-45deg) translate(7px, -6px);
}

/* ===== HERO SECTION STYLES ===== */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  background: linear-gradient(135deg, #0f172a 0%, #1e293b 50%, #334155 100%);
}

.hero-background {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
}

.hero-particles {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: 
    radial-gradient(2px 2px at 20px 30px, rgba(255,255,255,0.3), transparent),
    radial-gradient(2px 2px at 40px 70px, rgba(255,255,255,0.2), transparent),
    radial-gradient(1px 1px at 90px 40px, rgba(255,255,255,0.4), transparent),
    radial-gradient(1px 1px at 130px 80px, rgba(255,255,255,0.3), transparent);
  background-repeat: repeat;
  background-size: 150px 150px;
  animation: float 20s ease-in-out infinite;
}

.hero-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-3xl);
  align-items: center;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
  position: relative;
  z-index: 2;
}

.hero-text {
  color: var(--text-inverse);
}

.hero-greeting {
    margin-bottom: 1rem;
}

.greeting-text {
    font-size: 1.5rem;
    color: var(--text-secondary);
    font-weight: 400;
    opacity: 0;
    animation: slideInLeft 1s ease-out 0.5s forwards;
}

.hero-title {
    font-size: clamp(3rem, 10vw, 5rem);
    font-weight: 800;
    margin-bottom: 1.5rem;
    line-height: 1.1;
}

.name-highlight {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    display: block;
    position: relative;
    opacity: 0;
    animation: slideInUp 1s ease-out 1s forwards;
}

.name-highlight::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 0;
    width: 0;
    height: 4px;
    background: var(--gradient-primary);
    animation: expandWidth 1s ease-out 2s forwards;
}

/* About Image Section */
.about-image {
    display: flex;
    justify-content: center;
    align-items: center;
}

.image-wrapper {
    position: relative;
    width: 100%;
    max-width: 400px;
}

/* 3D Profile Card */
.profile-3d-container {
    perspective: 1000px;
    width: 100%;
    display: flex;
    justify-content: center;
}

.profile-card-3d {
    position: relative;
    width: 300px;
    height: 350px;
    transform-style: preserve-3d;
    transition: transform 0.8s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    cursor: pointer;
}

.profile-card-3d:hover {
    transform: rotateY(180deg) scale(1.05);
}

.card-front, .card-back {
    position: absolute;
    width: 100%;
    height: 100%;
    backface-visibility: hidden;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.card-front {
    background: var(--bg-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
}

.card-front img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.card-back {
    background: var(--gradient-primary);
    transform: rotateY(180deg);
    display: flex;
    align-items: center;
    justify-content: center;
}

.tech-icons {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
    text-align: center;
}

.tech-icons i {
    font-size: 3rem;
    color: white;
    animation: bounce 2s infinite;
}

.tech-icons i:nth-child(2) {
    animation-delay: 0.2s;
}

.tech-icons i:nth-child(3) {
    animation-delay: 0.4s;
}

.tech-icons i:nth-child(4) {
    animation-delay: 0.6s;
}

/* Floating Elements */
.floating-elements {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
}

.floating-icon {
    position: absolute;
    width: 50px;
    height: 50px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 10px 30px rgba(37, 99, 235, 0.3);
    animation: float3d 6s ease-in-out infinite;
}

.floating-icon i {
    font-size: 1.2rem;
    color: white;
}

.tech-java {
    top: 10%;
    right: -10%;
    animation-delay: 0s;
}

.tech-python {
    top: 60%;
    right: -15%;
    animation-delay: 1.5s;
}

.tech-js {
    bottom: 20%;
    left: -10%;
    animation-delay: 3s;
}

.tech-database {
    top: 30%;
    left: -15%;
    animation-delay: 4.5s;
}

.hero-subtitle {
  font-size: var(--font-size-2xl);
  font-weight: 500;
  margin-bottom: var(--spacing-xl);
  min-height: 60px;
  display: flex;
  align-items: center;
}

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

.cursor {
  animation: blink 1s infinite;
  color: var(--secondary-color);
}

@keyframes blink {
  0%, 50% { opacity: 1; }
  51%, 100% { opacity: 0; }
}

@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

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

@keyframes expandWidth {
    from {
        width: 0;
    }
    to {
        width: 100%;
    }
}

@keyframes float3d {
    0%, 100% {
        transform: translateY(0px) rotateZ(0deg);
    }
    33% {
        transform: translateY(-20px) rotateZ(5deg);
    }
    66% {
        transform: translateY(10px) rotateZ(-5deg);
    }
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateY(0);
    }
    40% {
        transform: translateY(-10px);
    }
    60% {
        transform: translateY(-5px);
    }
}

.hero-description {
  font-size: var(--font-size-lg);
  line-height: 1.7;
  margin-bottom: var(--spacing-2xl);
  opacity: 0;
  animation: fadeIn 0.8s ease-out 1s forwards;
}

.hero-buttons {
  display: flex;
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-2xl);
  flex-wrap: wrap;
  opacity: 0;
  animation: fadeIn 0.8s ease-out 1.3s forwards;
}

.social-links {
  display: flex;
  gap: var(--spacing-md);
  opacity: 0;
  animation: fadeIn 0.8s ease-out 1.6s forwards;
}

.social-links a {
  width: 50px;
  height: 50px;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-inverse);
  font-size: var(--font-size-lg);
  transition: all var(--transition-fast);
  backdrop-filter: blur(10px);
}

.social-links a:hover {
  background: var(--text-inverse);
  color: var(--primary-color);
  transform: translateY(-3px);
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2);
}

.hero-image {
  display: flex;
  justify-content: center;
  align-items: center;
  opacity: 0;
  animation: fadeIn 0.8s ease-out 0.8s forwards;
}

.image-container {
  position: relative;
  width: 350px;
  height: 350px;
}

.profile-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 50%;
  border: 4px solid rgba(255, 255, 255, 0.2);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
  transition: transform var(--transition-slow);
}

.profile-img:hover {
  transform: scale(1.05);
}

.image-overlay {
  position: absolute;
  top: -20px;
  left: -20px;
  right: -20px;
  bottom: -20px;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-radius: 50%;
  animation: pulse 3s ease-in-out infinite;
}

.scroll-indicator {
  position: absolute;
  bottom: var(--spacing-xl);
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
}

.scroll-arrow {
  width: 40px;
  height: 40px;
  border: 2px solid rgba(255, 255, 255, 0.5);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255, 255, 255, 0.7);
  animation: bounce 2s infinite;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.scroll-arrow:hover {
  background: rgba(255, 255, 255, 0.1);
  color: var(--text-inverse);
}

/* ===== ABOUT SECTION ===== */
.about {
  background: var(--bg-secondary);
  padding: 100px 0;
}

.about-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-3xl);
  align-items: center;
}

.about-intro h3 {
  color: var(--primary-color);
  margin-bottom: var(--spacing-lg);
  font-size: var(--font-size-2xl);
}

.about-intro p {
  font-size: var(--font-size-lg);
  line-height: 1.8;
  color: var(--text-secondary);
}

.about-details {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
  margin: var(--spacing-2xl) 0;
}

.detail-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-xl);
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-fast);
  border: 1px solid var(--border-color);
}

.detail-item:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
  border-color: var(--primary-color);
}

.detail-item i {
  font-size: var(--font-size-2xl);
  color: var(--primary-color);
  width: 50px;
  text-align: center;
}

.detail-item h4 {
  margin-bottom: var(--spacing-xs);
  color: var(--text-primary);
}

.detail-item p {
  margin: 0;
  color: var(--text-secondary);
}

.about-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-lg);
  margin-top: var(--spacing-2xl);
}

.stat-item {
  text-align: center;
  padding: var(--spacing-xl);
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-fast);
  border: 1px solid var(--border-color);
}

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

.stat-number {
  display: block;
  font-size: var(--font-size-4xl);
  font-weight: 700;
  color: var(--primary-color);
  margin-bottom: var(--spacing-sm);
}

.stat-label {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 1px;
  font-weight: 600;
}

.about-image {
  position: relative;
}

.image-wrapper {
  position: relative;
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-xl);
}

.image-wrapper img {
  width: 100%;
  height: 400px;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.image-wrapper:hover img {
  transform: scale(1.1);
}

.floating-elements {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

.floating-icon {
  position: absolute;
  width: 60px;
  height: 60px;
  background: var(--bg-card);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-lg);
  animation: float 3s ease-in-out infinite;
  border: 2px solid var(--primary-color);
}

.floating-icon:nth-child(1) {
  top: 20%;
  right: -30px;
  animation-delay: 0s;
}

.floating-icon:nth-child(2) {
  bottom: 30%;
  left: -30px;
  animation-delay: 1s;
}

.floating-icon:nth-child(3) {
  top: 60%;
  right: -20px;
  animation-delay: 2s;
}

.floating-icon i {
  font-size: var(--font-size-xl);
  color: var(--primary-color);
}

/* ===== SKILLS SECTION ===== */
.skills {
  background: var(--bg-primary);
  padding: 100px 0;
}

.skills-categories {
  display: flex;
  justify-content: center;
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-3xl);
  flex-wrap: wrap;
}

.skill-category {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-md) var(--spacing-xl);
  background: var(--bg-card);
  border: 2px solid var(--border-color);
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: all var(--transition-fast);
  font-weight: 500;
  box-shadow: var(--shadow-sm);
}

.skill-category.active,
.skill-category:hover {
  background: var(--primary-color);
  color: var(--text-inverse);
  border-color: var(--primary-color);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.skills-grid {
  max-width: 800px;
  margin: 0 auto;
}

.skills-group {
  display: none;
}

.skills-group.active {
  display: block;
  animation: fadeIn 0.5s ease-out;
}

.skill-item {
  margin-bottom: var(--spacing-xl);
  padding: var(--spacing-lg);
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-fast);
  border: 1px solid var(--border-color);
}

.skill-item:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
  border-color: var(--primary-color);
}

.skill-info {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-md);
}

.skill-name {
  font-weight: 600;
  color: var(--text-primary);
  font-size: var(--font-size-lg);
}

.skill-percentage {
  font-weight: 500;
  color: var(--primary-color);
  font-size: var(--font-size-lg);
}

.skill-bar {
  height: 10px;
  background: var(--bg-tertiary);
  border-radius: var(--radius-full);
  overflow: hidden;
  position: relative;
}

.skill-progress {
  height: 100%;
  background: var(--gradient-primary);
  border-radius: var(--radius-full);
  width: 0;
  transition: width 1.5s ease-out;
  position: relative;
}

.skill-progress::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
  animation: shimmer 2s infinite;
}

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

/* ===== PROJECTS SECTION ===== */
.projects {
  background: var(--bg-secondary);
  padding: 100px 0;
}

.projects-filter {
  display: flex;
  justify-content: center;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-3xl);
  flex-wrap: wrap;
}

.filter-btn {
  padding: var(--spacing-sm) var(--spacing-lg);
  background: var(--bg-card);
  border: 2px solid var(--border-color);
  border-radius: var(--radius-full);
  color: var(--text-primary);
  cursor: pointer;
  transition: all var(--transition-fast);
  font-weight: 500;
  box-shadow: var(--shadow-sm);
}

.filter-btn.active,
.filter-btn:hover {
  background: var(--primary-color);
  color: var(--text-inverse);
  border-color: var(--primary-color);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: var(--spacing-2xl);
}

.project-card {
  background: var(--bg-card);
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  transition: all var(--transition-normal);
  opacity: 1;
  transform: scale(1);
  border: 1px solid var(--border-color);
}

.project-card:hover {
  transform: translateY(-10px);
  box-shadow: var(--shadow-xl);
  border-color: var(--primary-color);
}

.project-card.hidden {
  opacity: 0;
  transform: scale(0.8);
  pointer-events: none;
}

.project-image {
  position: relative;
  height: 250px;
  overflow: hidden;
}

.project-image img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  transition: transform var(--transition-slow);
  background: white;
  padding: 20px;
}

/* Specific styling for BIOMARK logo */
.project-image img[src*="ic_launcher-playstore"] {
  object-fit: contain;
  object-position: center;
  background: white;
  padding: 40px;
  border-radius: 10px;
}

/* Laptop frame styling for portfolio project */
.project-card[data-category="web"] .project-image {
  background: linear-gradient(145deg, #2c3e50, #34495e);
  border-radius: 15px;
  padding: 20px 20px 40px 20px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
  position: relative;
}

/* Laptop screen bezel */
.project-card[data-category="web"] .project-image::before {
  content: '';
  position: absolute;
  top: 15px;
  left: 15px;
  right: 15px;
  bottom: 35px;
  border: 3px solid #1a1a1a;
  border-radius: 8px;
  z-index: 1;
}

/* Laptop keyboard/trackpad area */
.project-card[data-category="web"] .project-image::after {
  content: '';
  position: absolute;
  bottom: 8px;
  left: 50%;
  transform: translateX(-50%);
  width: 80%;
  height: 20px;
  background: linear-gradient(145deg, #1a1a1a, #333);
  border-radius: 10px;
  z-index: 2;
}

/* Portfolio screenshot specific styling */
.project-image img[src*="Screenshot"] {
  object-fit: cover;
  object-position: center top;
  background: #f0f0f0;
  border-radius: 5px;
  z-index: 3;
  position: relative;
}

.project-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.8);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity var(--transition-fast);
  pointer-events: none;
}

.project-card:hover .project-overlay {
  opacity: 1;
  pointer-events: auto;
}

.project-card:hover .project-image img {
  transform: scale(1.1);
}

.project-links {
  display: flex;
  gap: var(--spacing-md);
}

.project-link {
  width: 50px;
  height: 50px;
  background: var(--primary-color);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-inverse);
  font-size: var(--font-size-lg);
  transition: all var(--transition-fast);
  text-decoration: none;
  z-index: 10;
  position: relative;
}

.project-link:hover {
  background: var(--secondary-color);
  transform: scale(1.1);
}

.project-content {
  padding: var(--spacing-xl);
}

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

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

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

.tech-tag {
  padding: var(--spacing-xs) var(--spacing-md);
  background: var(--bg-tertiary);
  color: var(--primary-color);
  border-radius: var(--radius-full);
  font-size: var(--font-size-sm);
  font-weight: 500;
  border: 1px solid var(--primary-color);
}

/* ===== ACHIEVEMENTS SECTION ===== */
.achievements {
  background: var(--bg-primary);
  padding: 100px 0;
}

.achievements-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-2xl);
}

.achievement-card {
  background: var(--bg-card);
  padding: var(--spacing-2xl);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-md);
  text-align: center;
  transition: all var(--transition-fast);
  position: relative;
  overflow: hidden;
  border: 1px solid var(--border-color);
}

.achievement-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(99, 102, 241, 0.1), transparent);
  transition: left var(--transition-slow);
}

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

.achievement-card:hover {
  transform: translateY(-10px);
  box-shadow: var(--shadow-xl);
  border-color: var(--primary-color);
}

.achievement-icon {
  width: 80px;
  height: 80px;
  background: var(--gradient-primary);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--spacing-lg);
  font-size: var(--font-size-2xl);
  color: var(--text-inverse);
}

.achievement-content h3 {
  color: var(--text-primary);
  margin-bottom: var(--spacing-md);
  font-size: var(--font-size-xl);
}

.achievement-content p {
  color: var(--text-secondary);
  margin-bottom: var(--spacing-lg);
  line-height: 1.6;
}

.achievement-year {
  display: inline-block;
  padding: var(--spacing-xs) var(--spacing-md);
  background: var(--bg-tertiary);
  color: var(--primary-color);
  border-radius: var(--radius-full);
  font-size: var(--font-size-sm);
  font-weight: 600;
  border: 1px solid var(--primary-color);
}

/* ===== CONTACT SECTION ===== */
.contact {
  background: var(--bg-secondary);
  padding: 100px 0;
}

.contact-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-3xl);
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-2xl);
}

.contact-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-lg);
  padding: var(--spacing-xl);
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-fast);
  border: 1px solid var(--border-color);
}

.contact-item:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
  border-color: var(--primary-color);
}

.contact-icon {
  width: 60px;
  height: 60px;
  background: var(--gradient-primary);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-xl);
  color: var(--text-inverse);
}

.contact-details h4 {
  color: var(--text-primary);
  margin-bottom: var(--spacing-sm);
  font-size: var(--font-size-lg);
}

.contact-details p {
  color: var(--text-secondary);
  margin: 0;
}

.contact-social h4 {
  color: var(--text-primary);
  margin-bottom: var(--spacing-md);
  font-size: var(--font-size-lg);
}

.contact-social .social-links {
  display: flex;
  gap: var(--spacing-md);
}

.contact-social .social-links a {
  width: 50px;
  height: 50px;
  background: var(--bg-tertiary);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary-color);
  font-size: var(--font-size-lg);
  transition: all var(--transition-fast);
  border: 2px solid var(--primary-color);
}

.contact-social .social-links a:hover {
  background: var(--primary-color);
  color: var(--text-inverse);
  transform: translateY(-3px);
}

/* ===== CONTACT FORM ===== */
.contact-form {
  background: var(--bg-card);
  padding: var(--spacing-2xl);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--border-color);
}

.form-group {
  position: relative;
  margin-bottom: var(--spacing-xl);
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 20px 16px;
  border: 2px solid var(--border-color);
  border-radius: var(--radius-lg);
  background: var(--bg-primary);
  color: var(--text-primary);
  font-size: var(--font-size-base);
  transition: all var(--transition-fast);
  resize: vertical;
  font-family: var(--font-primary);
  box-sizing: border-box;
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.form-group label {
  position: absolute;
  top: 20px;
  left: 16px;
  color: var(--text-muted);
  font-size: var(--font-size-base);
  pointer-events: none;
  transition: all var(--transition-fast);
  background: var(--bg-card);
  padding: 0 8px;
  z-index: 2;
}

.form-group textarea + label {
  top: 16px;
  left: 16px;
  line-height: 1;
}

.form-group input:focus + label,
.form-group input:not(:placeholder-shown) + label,
.form-group textarea:focus + label,
.form-group textarea:not(:placeholder-shown) + label {
  top: -12px;
  left: 12px;
  font-size: 14px;
  color: var(--primary-color);
  background: var(--bg-card);
}

/* ===== FOOTER ===== */
.footer {
  background: var(--bg-primary);
  border-top: 1px solid var(--border-color);
  padding: var(--spacing-2xl) 0;
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--spacing-lg);
}

.footer-text p {
  color: var(--text-secondary);
  margin: 0;
}

.footer-links {
  display: flex;
  gap: var(--spacing-lg);
}

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

.footer-links a:hover {
  color: var(--primary-color);
}

/* ===== BACK TO TOP BUTTON ===== */
.back-to-top {
  position: fixed;
  bottom: var(--spacing-xl);
  right: var(--spacing-xl);
  width: 50px;
  height: 50px;
  background: var(--gradient-primary);
  border: none;
  border-radius: var(--radius-full);
  color: var(--text-inverse);
  font-size: var(--font-size-lg);
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-fast);
  z-index: var(--z-fixed);
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
}

.back-to-top:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
}

/* ===== RESPONSIVE DESIGN ===== */
@media (max-width: 1200px) {
  .container {
    max-width: 960px;
  }
}

@media (max-width: 992px) {
  .container {
    max-width: 720px;
  }
  
  .hero-content {
    grid-template-columns: 1fr;
    text-align: center;
    gap: var(--spacing-2xl);
  }
  
  .about-content {
    grid-template-columns: 1fr;
    gap: var(--spacing-2xl);
  }
  
  .skills-tabs {
    flex-wrap: wrap;
    justify-content: center;
  }
  
  .projects-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .container {
    max-width: 540px;
    padding: 0 var(--spacing-md);
  }
  
  .nav-menu {
    position: fixed;
    top: 70px;
    left: -100%;
    width: 100%;
    height: calc(100vh - 70px);
    background: var(--bg-overlay);
    backdrop-filter: blur(10px);
    flex-direction: column;
    justify-content: flex-start;
    align-items: center;
    padding-top: var(--spacing-2xl);
    transition: left var(--transition-fast);
  }
  
  .nav-menu.active {
    left: 0;
  }
  
  .nav-item {
    margin: var(--spacing-md) 0;
  }
  
  .hamburger {
    display: flex;
  }
  
  .hero-title {
    font-size: clamp(2rem, 8vw, 3rem);
  }
  
  .projects-grid {
    grid-template-columns: 1fr;
  }
  
  .achievements-grid {
    grid-template-columns: 1fr;
  }
  
  .contact-content {
    grid-template-columns: 1fr;
    gap: var(--spacing-2xl);
  }
  
  .about-content {
    flex-direction: column;
    text-align: center;
  }
  
  .about-text {
    margin-bottom: 2rem;
  }
  
  .profile-card-3d {
    width: 250px;
    height: 300px;
  }
  
  .floating-icon {
    width: 40px;
    height: 40px;
  }
  
  .floating-icon i {
    font-size: 1rem;
  }

  .hero-buttons {
    justify-content: center;
  }

  .image-container {
    width: 250px;
    height: 250px;
  }

  /* Sections Mobile */
  .about-content,
  .contact-content {
    grid-template-columns: 1fr;
    gap: var(--spacing-2xl);
  }

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

  .skills-categories {
    gap: var(--spacing-sm);
  }

  .skill-category {
    padding: var(--spacing-sm) var(--spacing-lg);
  }

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

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

  .footer-content {
    flex-direction: column;
    text-align: center;
  }

  /* Spacing adjustments */
  section {
    padding: 60px 0;
  }

  .about,
  .skills,
  .projects,
  .achievements,
  .contact {
    padding: 60px 0;
  }
}

@media (max-width: 480px) {
  .section-title {
    font-size: var(--font-size-3xl);
  }

  .hero-buttons {
    flex-direction: column;
    align-items: stretch;
  }

  .btn {
    width: 100%;
    max-width: 250px;
    justify-content: center;
    margin: 0 auto;
  }

  .contact-item {
    flex-direction: column;
    text-align: center;
  }

  .container {
    padding: 0 var(--spacing-md);
  }

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

  .project-card {
    margin: 0 var(--spacing-sm);
  }
}

/* ===== ACCESSIBILITY & PERFORMANCE ===== */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* Focus styles for accessibility */
.btn:focus,
.theme-toggle:focus,
.nav-link:focus,
.project-link:focus,
.social-links a:focus {
  outline: 2px solid var(--primary-color);
  outline-offset: 2px;
}

/* High contrast mode support */
@media (prefers-contrast: high) {
  :root {
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.8);
    --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.8);
    --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.8);
    --shadow-xl: 0 16px 32px rgba(0, 0, 0, 0.8);
  }
}

/* Print styles */
@media print {
  .navbar,
  .back-to-top,
  .hamburger,
  .theme-toggle {
    display: none !important;
  }

  body {
    background: white !important;
    color: black !important;
  }

  .hero {
    background: white !important;
    color: black !important;
    page-break-after: always;
  }

  section {
    page-break-inside: avoid;
  }
}