/* ===== CSS VARIABLES ===== */
:root {
  /* Primary Colors */
  --primary-color: #6366f1;
  --primary-dark: #4f46e5;
  --primary-light: #818cf8;
  --secondary-color: #06b6d4;
  
  /* Light Mode Colors */
  --bg-primary: #ffffff;
  --bg-secondary: #f8fafc;
  --bg-tertiary: #f1f5f9;
  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-muted: #94a3b8;
  --border-color: #e2e8f0;
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
  
  /* 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%);
  
  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --spacing-2xl: 4rem;
  
  /* Typography */
  --font-family: 'Poppins', sans-serif;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 1.875rem;
  --font-size-4xl: 2.25rem;
  --font-size-5xl: 3rem;
  
  /* Border Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-full: 9999px;
  
  /* Transitions */
  --transition-fast: 150ms ease-in-out;
  --transition-base: 300ms ease-in-out;
  --transition-slow: 500ms ease-in-out;
}

/* Dark Mode Variables */
[data-theme="dark"] {
  --bg-primary: #0f172a;
  --bg-secondary: #1e293b;
  --bg-tertiary: #334155;
  --text-primary: #f1f5f9;
  --text-secondary: #cbd5e1;
  --text-muted: #64748b;
  --border-color: #334155;
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.5);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.6);
}

/* ===== RESET & 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-base);
  line-height: 1.6;
  color: var(--text-primary);
  background-color: var(--bg-primary);
  overflow-x: hidden;
  transition: background-color var(--transition-base), color var(--transition-base);
}

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

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

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
  transition: all var(--transition-base);
}

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

.section-header {
  text-align: center;
  margin-bottom: var(--spacing-2xl);
}

.section-tag {
  display: inline-block;
  color: var(--primary-color);
  font-size: var(--font-size-sm);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  margin-bottom: var(--spacing-sm);
}

.section-title {
  font-size: var(--font-size-4xl);
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: var(--spacing-sm);
  position: relative;
  display: inline-block;
}

.section-title::after {
  content: '';
  position: absolute;
  bottom: -10px;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 4px;
  background: var(--gradient-primary);
  border-radius: var(--radius-full);
}

/* ===== SCROLL PROGRESS BAR ===== */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 4px;
  background: var(--gradient-primary);
  width: 0%;
  z-index: 10000;
  transition: width var(--transition-fast);
}

/* ===== NAVIGATION ===== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  padding: var(--spacing-md) 0;
  box-shadow: var(--shadow-sm);
  z-index: 1000;
  transition: all var(--transition-base);
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-left: var(--spacing-lg);
  padding-right: var(--spacing-lg);
}

[data-theme="dark"] .navbar {
  background: rgba(15, 23, 42, 0.95);
}

.navbar.scrolled {
  padding: var(--spacing-sm) var(--spacing-lg);
  box-shadow: var(--shadow-md);
}

.logo {
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 2px;
}

.logo-dot {
  color: var(--primary-color);
  font-size: var(--font-size-3xl);
}

.nav-links {
  display: flex;
  list-style: none;
  gap: var(--spacing-lg);
  align-items: center;
}

.nav-link {
  color: var(--text-secondary);
  font-weight: 500;
  font-size: var(--font-size-sm);
  position: relative;
  padding: var(--spacing-xs) 0;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--primary-color);
  transition: width var(--transition-base);
}

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

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

.hire-btn {
  background: var(--gradient-primary);
  color: white;
  padding: var(--spacing-xs) var(--spacing-md);
  border-radius: var(--radius-full);
  font-weight: 600;
  font-size: var(--font-size-sm);
  box-shadow: var(--shadow-md);
  transition: all var(--transition-base);
}

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

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

.theme-toggle:hover {
  background: var(--primary-color);
  color: white;
  transform: rotate(180deg);
}

.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: var(--spacing-xs);
}

.menu-toggle span {
  width: 25px;
  height: 3px;
  background: var(--text-primary);
  border-radius: var(--radius-full);
  transition: all var(--transition-base);
}

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

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

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

/* ===== HERO SECTION ===== */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  padding-top: 100px;
}

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

.floating-shapes {
  position: absolute;
  width: 100%;
  height: 100%;
}

.shape {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.15;
  animation: float 20s infinite ease-in-out;
}

.shape-1 {
  width: 300px;
  height: 300px;
  background: var(--primary-color);
  top: 10%;
  left: 10%;
  animation-delay: 0s;
}

.shape-2 {
  width: 400px;
  height: 400px;
  background: var(--secondary-color);
  top: 50%;
  right: 10%;
  animation-delay: 2s;
}

.shape-3 {
  width: 250px;
  height: 250px;
  background: #f093fb;
  bottom: 20%;
  left: 50%;
  animation-delay: 4s;
}

.shape-4 {
  width: 350px;
  height: 350px;
  background: #4facfe;
  top: 30%;
  right: 30%;
  animation-delay: 6s;
}

@keyframes float {
  0%, 100% {
    transform: translate(0, 0) rotate(0deg);
  }
  25% {
    transform: translate(20px, -20px) rotate(5deg);
  }
  50% {
    transform: translate(-20px, 20px) rotate(-5deg);
  }
  75% {
    transform: translate(20px, 20px) rotate(5deg);
  }
}

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

.hero-content {
  animation: fadeInUp 1s ease-out;
}

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

.greeting {
  font-size: var(--font-size-lg);
  color: var(--text-secondary);
  margin-bottom: var(--spacing-xs);
}

.hero-title {
  font-size: var(--font-size-5xl);
  font-weight: 700;
  margin-bottom: var(--spacing-sm);
  line-height: 1.2;
}

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

.hero-subtitle {
  font-size: var(--font-size-3xl);
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: var(--spacing-md);
  display: flex;
  align-items: center;
  gap: 5px;
  min-height: 60px;
}

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

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

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

.hero-description {
  font-size: var(--font-size-lg);
  color: var(--text-secondary);
  margin-bottom: var(--spacing-xl);
  line-height: 1.8;
  max-width: 90%;
}

.hero-buttons {
  display: flex;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-xl);
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: 12px 28px;
  border-radius: var(--radius-full);
  font-weight: 600;
  font-size: var(--font-size-base);
  transition: all var(--transition-base);
  cursor: pointer;
}

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

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-xl);
}

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

.btn-outline:hover {
  background: var(--primary-color);
  color: white;
  transform: translateY(-3px);
}

.social-links {
  display: flex;
  gap: var(--spacing-sm);
  flex-wrap: wrap;
}

.social-btn {
  width: 45px;
  height: 45px;
  border-radius: var(--radius-full);
  background: var(--bg-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-primary);
  font-size: var(--font-size-lg);
  transition: all var(--transition-base);
  box-shadow: var(--shadow-sm);
}

.social-btn:hover {
  background: var(--primary-color);
  color: white;
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}

.hero-image {
  position: relative;
  animation: fadeInRight 1s ease-out;
}

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

.image-wrapper {
  position: relative;
  width: 100%;
  max-width: 450px;
  margin: 0 auto;
}

.image-wrapper img {
  width: 100%;
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
  position: relative;
  z-index: 2;
}

.image-glow {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 90%;
  height: 90%;
  background: var(--gradient-primary);
  border-radius: var(--radius-xl);
  filter: blur(40px);
  opacity: 0.3;
  z-index: 1;
  animation: pulse 3s infinite;
}

@keyframes pulse {
  0%, 100% {
    transform: translate(-50%, -50%) scale(1);
    opacity: 0.3;
  }
  50% {
    transform: translate(-50%, -50%) scale(1.1);
    opacity: 0.5;
  }
}

.stats-cards {
  display: flex;
  gap: var(--spacing-md);
  margin-top: var(--spacing-lg);
  justify-content: center;
}

.stat-card {
  background: var(--bg-secondary);
  padding: var(--spacing-md);
  border-radius: var(--radius-lg);
  text-align: center;
  box-shadow: var(--shadow-md);
  flex: 1;
  transition: all var(--transition-base);
}

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

.stat-number {
  font-size: var(--font-size-3xl);
  font-weight: 700;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: var(--spacing-xs);
}

.stat-label {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
}

.scroll-indicator {
  position: absolute;
  bottom: 30px;
  left: 50%;
  transform: translateX(-50%);
  text-align: center;
  color: var(--text-muted);
  animation: bounce 2s infinite;
}

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

.mouse {
  width: 30px;
  height: 50px;
  border: 2px solid var(--text-muted);
  border-radius: 15px;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding: 8px;
  margin: 0 auto var(--spacing-xs);
}

.wheel {
  width: 4px;
  height: 10px;
  background: var(--text-muted);
  border-radius: 2px;
  animation: scroll 2s infinite;
}

@keyframes scroll {
  0% {
    transform: translateY(0);
    opacity: 1;
  }
  100% {
    transform: translateY(20px);
    opacity: 0;
  }
}

/* ===== ABOUT SECTION ===== */
.about {
  padding: var(--spacing-2xl) 0;
  background: var(--bg-secondary);
}

.about-content {
  display: grid;
  gap: var(--spacing-xl);
}

.about-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-md);
}

.about-card {
  background: var(--bg-primary);
  padding: var(--spacing-xl);
  border-radius: var(--radius-lg);
  text-align: center;
  box-shadow: var(--shadow-md);
  transition: all var(--transition-base);
}

.about-card:hover {
  transform: translateY(-10px);
  box-shadow: var(--shadow-xl);
}

.about-card i {
  font-size: var(--font-size-4xl);
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: var(--spacing-md);
}

.about-card h3 {
  font-size: var(--font-size-xl);
  margin-bottom: var(--spacing-xs);
  color: var(--text-primary);
}

.about-card p {
  color: var(--text-secondary);
}

.about-text {
  text-align: center;
  max-width: 800px;
  margin: 0 auto;
}

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

/* ===== SKILLS SECTION ===== */
.skills {
  padding: var(--spacing-2xl) 0;
}

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

.skill-item {
  background: var(--bg-secondary);
  padding: var(--spacing-lg);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  box-shadow: var(--shadow-md);
  transition: all var(--transition-base);
  opacity: 0;
  transform: translateY(30px);
}

.skill-item.visible {
  animation: fadeInUp 0.6s ease-out forwards;
}

.skill-item:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}

.skill-icon {
  width: 60px;
  height: 60px;
  border-radius: var(--radius-lg);
  background: var(--gradient-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: var(--font-size-2xl);
  flex-shrink: 0;
}

.skill-info {
  flex: 1;
}

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

.skill-info h3 {
  font-size: var(--font-size-lg);
  color: var(--text-primary);
}

.skill-percentage {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--primary-color);
}

.skill-bar {
  width: 100%;
  height: 8px;
  background: var(--bg-tertiary);
  border-radius: var(--radius-full);
  overflow: hidden;
}

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

.skill-item.visible .skill-progress {
  width: var(--progress);
}

/* ===== PROJECTS SECTION ===== */
.projects {
  padding: var(--spacing-2xl) 0;
  background: var(--bg-secondary);
}

.project-filters {
  display: flex;
  justify-content: center;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-xl);
  flex-wrap: wrap;
}

.filter-btn {
  padding: var(--spacing-xs) var(--spacing-md);
  border-radius: var(--radius-full);
  background: var(--bg-primary);
  color: var(--text-secondary);
  font-weight: 500;
  border: 2px solid transparent;
  transition: all var(--transition-base);
}

.filter-btn:hover,
.filter-btn.active {
  background: var(--primary-color);
  color: white;
  border-color: var(--primary-color);
}

.project-category {
  margin-bottom: var(--spacing-2xl);
}

.category-title {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  margin-bottom: var(--spacing-lg);
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.category-title i {
  color: var(--primary-color);
}

.difficulty-section {
  margin-bottom: var(--spacing-xl);
}

.difficulty-badge {
  display: inline-block;
  padding: var(--spacing-xs) var(--spacing-md);
  border-radius: var(--radius-full);
  font-size: var(--font-size-sm);
  font-weight: 600;
  margin-bottom: var(--spacing-md);
}

.difficulty-badge.beginner {
  background: #10b981;
  color: white;
}

.difficulty-badge.intermediate {
  background: #f59e0b;
  color: white;
}

.difficulty-badge.hard {
  background: #ef4444;
  color: white;
}

.project-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: var(--spacing-lg);
}

.project-card {
  background: var(--bg-primary);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  transition: all var(--transition-base);
  opacity: 0;
  transform: translateY(30px);
}

.project-card.visible {
  animation: fadeInUp 0.6s ease-out forwards;
}

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

.project-image {
  height: 200px;
  background: var(--gradient-primary);
  position: relative;
  overflow: hidden;
}

.project-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.7);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity var(--transition-base);
}

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

.project-link {
  width: 60px;
  height: 60px;
  border-radius: var(--radius-full);
  background: white;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary-color);
  font-size: var(--font-size-2xl);
  transition: all var(--transition-base);
}

.project-link:hover {
  transform: scale(1.1) rotate(360deg);
}

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

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

.tag {
  padding: 4px 12px;
  border-radius: var(--radius-full);
  background: var(--bg-secondary);
  color: var(--primary-color);
  font-size: 0.75rem;
  font-weight: 500;
}

.project-content h5 {
  font-size: var(--font-size-xl);
  margin-bottom: var(--spacing-sm);
  color: var(--text-primary);
}

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

.project-btn {
  color: var(--primary-color);
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  transition: all var(--transition-base);
}

.project-btn:hover {
  gap: var(--spacing-sm);
}

/* ===== ACHIEVEMENTS SECTION ===== */
.achievements {
  padding: var(--spacing-2xl) 0;
}

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

.achievement-card {
  background: var(--bg-secondary);
  padding: var(--spacing-xl);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  display: flex;
  gap: var(--spacing-md);
  transition: all var(--transition-base);
  opacity: 0;
  transform: translateY(30px);
}

.achievement-card.visible {
  animation: fadeInUp 0.6s ease-out forwards;
}

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

.achievement-icon {
  width: 70px;
  height: 70px;
  border-radius: var(--radius-lg);
  background: var(--gradient-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: var(--font-size-3xl);
  flex-shrink: 0;
}

.achievement-content h4 {
  font-size: var(--font-size-xl);
  margin-bottom: var(--spacing-sm);
  color: var(--text-primary);
}

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

.achievement-link {
  color: var(--primary-color);
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  transition: all var(--transition-base);
}

.achievement-link:hover {
  gap: var(--spacing-sm);
}

/* ===== CONTACT SECTION ===== */
.contact {
  padding: var(--spacing-2xl) 0;
  background: var(--bg-secondary);
}

.contact-content {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: var(--spacing-2xl);
  margin-top: var(--spacing-xl);
}

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

.contact-item {
  display: flex;
  gap: var(--spacing-md);
  align-items: flex-start;
}

.contact-icon {
  width: 50px;
  height: 50px;
  border-radius: var(--radius-lg);
  background: var(--gradient-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: var(--font-size-xl);
  flex-shrink: 0;
}

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

.contact-details a {
  color: var(--text-secondary);
  transition: color var(--transition-base);
}

.contact-details a:hover {
  color: var(--primary-color);
}

.contact-form {
  background: var(--bg-primary);
  padding: var(--spacing-xl);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
}

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

.form-group i {
  position: absolute;
  left: var(--spacing-md);
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  font-size: var(--font-size-lg);
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: var(--spacing-md) var(--spacing-md) var(--spacing-md) 50px;
  border: 2px solid var(--border-color);
  border-radius: var(--radius-md);
  font-family: inherit;
  font-size: var(--font-size-base);
  color: var(--text-primary);
  background: var(--bg-secondary);
  transition: all var(--transition-base);
}

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

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary-color);
  background: var(--bg-primary);
}

.contact-form button {
  width: 100%;
}

/* ===== FOOTER ===== */
.footer {
  background: var(--bg-tertiary);
  padding: var(--spacing-2xl) 0 var(--spacing-md);
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-xl);
  margin-bottom: var(--spacing-xl);
}

.footer-logo h3 {
  font-size: var(--font-size-2xl);
  margin-bottom: var(--spacing-sm);
  color: var(--text-primary);
}

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

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

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

.footer-links ul {
  list-style: none;
}

.footer-links li {
  margin-bottom: var(--spacing-xs);
}

.footer-links a {
  color: var(--text-secondary);
  transition: color var(--transition-base);
}

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

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

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

.footer-bottom {
  border-top: 1px solid var(--border-color);
  padding-top: var(--spacing-md);
  text-align: center;
  color: var(--text-secondary);
  font-size: var(--font-size-sm);
}

.footer-bottom p {
  margin-bottom: var(--spacing-xs);
}

.footer-bottom i {
  color: #ef4444;
}

/* ===== BACK TO TOP BUTTON ===== */
.back-to-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 50px;
  height: 50px;
  border-radius: var(--radius-full);
  background: var(--gradient-primary);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-xl);
  box-shadow: var(--shadow-lg);
  opacity: 0;
  pointer-events: none;
  transition: all var(--transition-base);
  z-index: 999;
}

.back-to-top.visible {
  opacity: 1;
  pointer-events: all;
}

.back-to-top:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-xl);
}

/* ===== RESPONSIVE DESIGN ===== */
@media (max-width: 968px) {
  .hero-container {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .hero-content {
    order: 2;
  }

  .hero-image {
    order: 1;
  }

  .hero-title {
    font-size: var(--font-size-4xl);
  }

  .hero-subtitle {
    font-size: var(--font-size-2xl);
    justify-content: center;
  }

  .hero-description {
    max-width: 100%;
  }

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

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

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

  .section-title {
    font-size: var(--font-size-3xl);
  }
}

@media (max-width: 768px) {
  .navbar {
    padding: var(--spacing-sm) var(--spacing-md);
  }

  .nav-links {
    position: fixed;
    top: 70px;
    left: -100%;
    width: 100%;
    height: calc(100vh - 70px);
    background: var(--bg-primary);
    flex-direction: column;
    align-items: flex-start;
    padding: var(--spacing-xl) var(--spacing-lg);
    gap: var(--spacing-md);
    box-shadow: var(--shadow-lg);
    transition: left var(--transition-base);
  }

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

  .hire-btn {
    display: none;
  }

  .menu-toggle {
    display: flex;
  }

  .hero-title {
    font-size: var(--font-size-3xl);
  }

  .hero-subtitle {
    font-size: var(--font-size-xl);
  }

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

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

  .stats-cards {
    flex-direction: column;
  }

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

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

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

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

@media (max-width: 480px) {
  .hero-title {
    font-size: var(--font-size-2xl);
  }

  .hero-subtitle {
    font-size: var(--font-size-lg);
  }

  .section-title {
    font-size: var(--font-size-2xl);
  }

  .hero-buttons {
    flex-direction: column;
  }

  .btn {
    width: 100%;
    justify-content: center;
  }
}

/* ===== LOADING ANIMATIONS ===== */
@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

.fade-in {
  animation: fadeIn 1s ease-out;
}