/* CSS Custom Properties */
:root {
  /* Colors - Updated for better accessibility */
  --primary-color: #2563eb;
  --primary-dark: #1d4ed8;
  --primary-light: #3b82f6;
  --secondary-color: #7c3aed;
  --accent-color: #0891b2;
  --success-color: #059669;
  --warning-color: #d97706;
  --error-color: #dc2626;
  
  /* Neutral Colors */
  --white: #ffffff;
  --gray-50: #f9fafb;
  --gray-100: #f3f4f6;
  --gray-200: #e5e7eb;
  --gray-300: #d1d5db;
  --gray-400: #9ca3af;
  --gray-500: #6b7280;
  --gray-600: #4b5563;
  --gray-700: #374151;
  --gray-800: #1f2937;
  --gray-900: #111827;
  
  /* Dark Mode Colors - Improved contrast */
  --bg-primary: #0f172a;
  --bg-secondary: #1e293b;
  --bg-tertiary: #334155;
  --text-primary: #f8fafc;
  --text-secondary: #e2e8f0;
  --text-muted: #94a3b8;
  
  /* Typography */
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-size-xs: 0.75rem;
  --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;
  --font-size-6xl: 3.75rem;
  
  /* Spacing */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;
  
  /* Border Radius */
  --radius-sm: 0.25rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.5rem;
  --radius-full: 9999px;
  
  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
  --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
  --shadow-2xl: 0 25px 50px -12px rgb(0 0 0 / 0.25);
  
  /* Transitions */
  --transition-fast: 150ms ease-in-out;
  --transition-normal: 300ms ease-in-out;
  --transition-slow: 500ms ease-in-out;
  
  /* Z-index */
  --z-dropdown: 1000;
  --z-sticky: 1020;
  --z-fixed: 1030;
  --z-modal: 1050;
  --z-popover: 1060;
  --z-tooltip: 1070;
}

/* Reset & Base Styles */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

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

/* Scrollbar Styling */
::-webkit-scrollbar {
  width: 8px;
}

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

::-webkit-scrollbar-thumb {
  background: var(--primary-color);
  border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--primary-dark);
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-weight: 600;
  line-height: 1.2;
  margin-bottom: var(--space-4);
}

h1 { font-size: var(--font-size-5xl); }
h2 { font-size: var(--font-size-4xl); }
h3 { font-size: var(--font-size-3xl); }
h4 { font-size: var(--font-size-2xl); }
h5 { font-size: var(--font-size-xl); }
h6 { font-size: var(--font-size-lg); }

p {
  margin-bottom: var(--space-4);
  color: var(--text-secondary);
}

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

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

/* Focus states for accessibility */
a:focus,
button:focus,
input:focus,
textarea:focus {
  outline: 2px solid var(--primary-color);
  outline-offset: 2px;
}

/* Skip to main content for screen readers */
.skip-to-main {
  position: absolute;
  top: -40px;
  left: 6px;
  background: var(--primary-color);
  color: var(--white);
  padding: 8px;
  text-decoration: none;
  z-index: 100;
}

.skip-to-main:focus {
  top: 6px;
}

/* Container */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-6);
}

/* Navigation */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: rgba(15, 23, 42, 0.8);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  z-index: var(--z-fixed);
  transition: all var(--transition-normal);
}

.nav.scrolled {
  background: rgba(15, 23, 42, 0.95);
  box-shadow: var(--shadow-lg);
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-6);
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 70px;
}

.nav-logo {
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--white);
  text-decoration: none;
}

.logo-text {
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nav-menu {
  display: flex;
  gap: var(--space-8);
}

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

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

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -8px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--primary-color);
  transition: width var(--transition-normal);
}

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

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

.nav-toggle span {
  width: 25px;
  height: 3px;
  background: var(--text-primary);
  transition: all var(--transition-normal);
}

/* Hero Section */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  background: 
    radial-gradient(circle at 20% 80%, rgba(120, 119, 198, 0.3) 0%, transparent 50%),
    radial-gradient(circle at 80% 20%, rgba(255, 119, 198, 0.3) 0%, transparent 50%),
    radial-gradient(circle at 40% 40%, rgba(120, 119, 255, 0.2) 0%, transparent 50%),
    linear-gradient(135deg, #0f0f23 0%, #1a1a2e 25%, #16213e 50%, #1a1a2e 75%, #0f0f23 100%);
}

.hero-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-6);
  width: 100%;
}

.hero-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-16);
  align-items: center;
}

.hero-title {
  font-size: var(--font-size-6xl);
  font-weight: 700;
  margin-bottom: var(--space-6);
  line-height: 1.1;
}

.gradient-text {
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color), var(--accent-color));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: gradient-shift 3s ease-in-out infinite;
}

@keyframes gradient-shift {
  0%, 100% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
}

.hero-subtitle {
  font-size: var(--font-size-2xl);
  color: var(--text-secondary);
  margin-bottom: var(--space-4);
  font-weight: 500;
}

.hero-description {
  font-size: var(--font-size-lg);
  color: var(--text-muted);
  margin-bottom: var(--space-8);
  max-width: 500px;
}

.hero-buttons {
  display: flex;
  gap: var(--space-4);
  flex-wrap: wrap;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-3) var(--space-6);
  border-radius: var(--radius-lg);
  font-weight: 500;
  text-decoration: none;
  transition: all var(--transition-normal);
  cursor: pointer;
  border: none;
  font-size: var(--font-size-base);
  position: relative;
  overflow: hidden;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
  color: var(--white);
  box-shadow: var(--shadow-lg);
}

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

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

.btn-secondary:hover {
  background: var(--primary-color);
  color: var(--white);
  transform: translateY(-2px);
}

.btn-full {
  width: 100%;
}

/* Hero Visual */
.hero-visual {
  display: flex;
  justify-content: center;
  align-items: center;
}

.floating-card {
  background: rgba(255, 255, 255, 0.05);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-2xl);
  padding: var(--space-6);
  animation: float 6s ease-in-out infinite;
  box-shadow: var(--shadow-2xl);
}

@keyframes float {
  0%, 100% { transform: translateY(0px) rotate(0deg); }
  50% { transform: translateY(-20px) rotate(2deg); }
}

.code-preview {
  font-family: 'Monaco', 'Menlo', 'Ubuntu Mono', monospace;
  font-size: var(--font-size-sm);
  width: 300px;
}

.code-header {
  display: flex;
  align-items: center;
  padding: var(--space-3);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.code-dots {
  display: flex;
  gap: var(--space-2);
}

.code-dots span {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--gray-500);
}

.code-dots span:nth-child(1) { background: #ff5f56; }
.code-dots span:nth-child(2) { background: #ffbd2e; }
.code-dots span:nth-child(3) { background: #27ca3f; }

.code-body {
  padding: var(--space-4);
}

.code-line {
  margin-bottom: var(--space-2);
  animation: typing 3s steps(30) infinite;
}

.code-indent {
  padding-left: var(--space-4);
}

.code-keyword { color: #ff7eb6; }
.code-variable { color: #78dcf2; }
.code-operator { color: #ffffff; }
.code-string { color: #82cfff; }
.code-bracket { color: #ffffff; }

/* Background Shapes */
.hero-bg-shapes {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: -1;
  overflow: hidden;
}

.shape {
  position: absolute;
  animation: float-shapes 25s ease-in-out infinite;
  filter: blur(1px);
}

.shape-1 {
  width: 300px;
  height: 300px;
  top: 10%;
  right: 10%;
  animation-delay: 0s;
  background: linear-gradient(135deg, #ff6b6b, #4ecdc4);
  border-radius: 50%;
  opacity: 0.1;
}

.shape-2 {
  width: 200px;
  height: 200px;
  bottom: 20%;
  left: 5%;
  animation-delay: -7s;
  background: linear-gradient(135deg, #a8e6cf, #ffd93d);
  border-radius: 50%;
  opacity: 0.12;
}

.shape-3 {
  width: 150px;
  height: 150px;
  top: 60%;
  right: 30%;
  animation-delay: -14s;
  background: linear-gradient(135deg, #ff9a8b, #a8e6cf);
  border-radius: 50%;
  opacity: 0.1;
}

.shape-4 {
  width: 100px;
  height: 100px;
  top: 30%;
  left: 15%;
  animation-delay: -10s;
  background: linear-gradient(135deg, #667eea, #764ba2);
  border-radius: 50%;
  opacity: 0.15;
}

.shape-5 {
  width: 250px;
  height: 250px;
  bottom: 10%;
  right: 5%;
  animation-delay: -5s;
  background: linear-gradient(135deg, #f093fb, #f5576c);
  border-radius: 50%;
  opacity: 0.08;
}

.shape-6 {
  width: 120px;
  height: 120px;
  top: 5%;
  left: 40%;
  animation-delay: -12s;
  background: linear-gradient(135deg, #4facfe, #00f2fe);
  border-radius: 50%;
  opacity: 0.12;
}

.shape-7 {
  width: 80px;
  height: 80px;
  bottom: 40%;
  left: 70%;
  animation-delay: -18s;
  background: linear-gradient(135deg, #43e97b, #38f9d7);
  border-radius: 50%;
  opacity: 0.15;
}

.shape-8 {
  width: 180px;
  height: 180px;
  top: 80%;
  left: 20%;
  animation-delay: -3s;
  background: linear-gradient(135deg, #fa709a, #fee140);
  border-radius: 50%;
  opacity: 0.1;
}

@keyframes float-shapes {
  0% { 
    transform: translateY(0px) translateX(0px) rotate(0deg) scale(1); 
  }
  25% { 
    transform: translateY(-20px) translateX(10px) rotate(90deg) scale(1.05); 
  }
  50% { 
    transform: translateY(-10px) translateX(-15px) rotate(180deg) scale(0.95); 
  }
  75% { 
    transform: translateY(15px) translateX(5px) rotate(270deg) scale(1.02); 
  }
  100% { 
    transform: translateY(0px) translateX(0px) rotate(360deg) scale(1); 
  }
}

/* Section Styles */
section {
  padding: var(--space-20) 0;
}

.section-header {
  text-align: center;
  margin-bottom: var(--space-16);
}

.section-title {
  font-size: var(--font-size-4xl);
  margin-bottom: var(--space-4);
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

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

/* About Section */
.about {
  background: var(--bg-secondary);
}

.about-content {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: var(--space-16);
  align-items: center;
}

.about-description {
  font-size: var(--font-size-lg);
  margin-bottom: var(--space-6);
}

.about-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-8);
  margin-top: var(--space-8);
}

.stat {
  text-align: center;
}

.stat-number {
  display: block;
  font-size: var(--font-size-3xl);
  font-weight: 700;
  color: var(--primary-color);
  margin-bottom: var(--space-2);
}

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

.about-image {
  display: flex;
  justify-content: center;
}

.image-container {
  position: relative;
  width: 300px;
  height: 300px;
}

.image-placeholder {
  width: 100%;
  height: 100%;
  background: rgba(255, 255, 255, 0.05);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 3px solid var(--primary-color);
  box-shadow: var(--shadow-xl);
}

/* Projects Section */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: var(--space-8);
}

.project-card {
  background: var(--bg-secondary);
  border-radius: var(--radius-xl);
  overflow: hidden;
  transition: transform var(--transition-normal);
  border: 1px solid rgba(255, 255, 255, 0.1);
  box-shadow: var(--shadow-lg);
}

.project-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-2xl);
  border-color: var(--primary-color);
  background: linear-gradient(135deg, var(--bg-secondary), rgba(59, 130, 246, 0.05));
}

.project-image {
  height: 200px;
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  position: relative;
  overflow: hidden;
}

.project-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.7);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity var(--transition-normal);
}

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

.project-links {
  display: flex;
  gap: var(--space-4);
}

.project-link {
  background: var(--white);
  color: var(--gray-900);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-md);
  font-weight: 500;
  transition: all var(--transition-fast);
}

.project-link:hover {
  transform: scale(1.05);
  color: var(--gray-900);
}

.project-content {
  padding: var(--space-6);
}

.project-title {
  font-size: var(--font-size-xl);
  margin-bottom: var(--space-3);
  color: var(--text-primary);
}

.project-description {
  color: var(--text-secondary);
  margin-bottom: var(--space-4);
  line-height: 1.6;
}

.project-tech {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.tech-tag {
  background: rgba(59, 130, 246, 0.1);
  color: var(--primary-color);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
  font-size: var(--font-size-sm);
  border: 1px solid rgba(59, 130, 246, 0.2);
}

/* Skills Section */
.skills {
  background: var(--bg-secondary);
}

.skills-container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-12);
}

.skill-category {
  background: var(--bg-primary);
  padding: var(--space-8);
  border-radius: var(--radius-xl);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.category-title {
  font-size: var(--font-size-xl);
  margin-bottom: var(--space-6);
  text-align: center;
  color: var(--primary-color);
}

.skills-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-4);
}

.skill-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-4);
  background: rgba(255, 255, 255, 0.05);
  border-radius: var(--radius-lg);
  transition: all var(--transition-normal);
  border: 1px solid rgba(255, 255, 255, 0.1);
  min-height: 60px;
  word-wrap: break-word;
  overflow-wrap: break-word;
  hyphens: auto;
}

.skill-item:hover {
  background: rgba(255, 255, 255, 0.1);
  transform: translateY(-2px);
}

.skill-icon {
  font-size: var(--font-size-xl);
  flex-shrink: 0;
  min-width: 24px;
}

.skill-name {
  font-weight: 500;
  color: var(--text-primary);
  font-size: var(--font-size-sm);
  line-height: 1.3;
  flex: 1;
}

/* Speaking Section */
.speaking {
  background: var(--bg-primary);
  position: relative;
  overflow: hidden;
}

.speaking::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(circle at 70% 30%, rgba(59, 130, 246, 0.05) 0%, transparent 60%);
  z-index: 1;
}

.speaking .container {
  position: relative;
  z-index: 2;
}

.speaking-container {
  display: flex;
  flex-direction: column;
  gap: var(--space-12);
}

.speaking-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-6);
  margin-bottom: var(--space-8);
}

.stat-card {
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.05), rgba(255, 255, 255, 0.02));
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  display: flex;
  align-items: center;
  gap: var(--space-4);
  transition: all var(--transition-normal);
  backdrop-filter: blur(10px);
  position: relative;
  overflow: hidden;
}

.stat-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
  transition: left 0.6s ease;
}

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

.stat-card:hover {
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.08), rgba(255, 255, 255, 0.05));
  transform: translateY(-3px);
  box-shadow: 0 10px 40px rgba(59, 130, 246, 0.15);
  border-color: rgba(59, 130, 246, 0.3);
}

.stat-icon {
  font-size: var(--font-size-3xl);
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  border-radius: 50%;
  width: 60px;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  animation: pulse-glow 3s ease-in-out infinite;
}

@keyframes pulse-glow {
  0%, 100% {
    box-shadow: 0 0 0 0 rgba(59, 130, 246, 0.4);
    transform: scale(1);
  }
  50% {
    box-shadow: 0 0 0 10px rgba(59, 130, 246, 0);
    transform: scale(1.05);
  }
}

.stat-info {
  display: flex;
  flex-direction: column;
}

.stat-number {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  color: var(--primary-color);
  line-height: 1;
}

.stat-label {
  color: var(--text-secondary);
  font-size: var(--font-size-sm);
  margin-top: var(--space-1);
}

.talks-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: var(--space-6);
}

.talk-card {
  background: linear-gradient(135deg, var(--bg-secondary), rgba(30, 41, 59, 0.8));
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  position: relative;
  transition: all var(--transition-normal);
  overflow: hidden;
  backdrop-filter: blur(10px);
}

.talk-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, rgba(59, 130, 246, 0.05), rgba(139, 92, 246, 0.05));
  opacity: 0;
  transition: opacity var(--transition-normal);
  z-index: 1;
}

.talk-card:hover::before {
  opacity: 1;
}

.talk-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
  border-color: rgba(59, 130, 246, 0.4);
}

.talk-card.featured {
  background: linear-gradient(135deg, rgba(59, 130, 246, 0.15), rgba(139, 92, 246, 0.15));
  border-color: var(--primary-color);
  box-shadow: 0 8px 32px rgba(59, 130, 246, 0.2);
}

.talk-content {
  position: relative;
  z-index: 2;
}

.talk-badge {
  position: absolute;
  top: var(--space-4);
  right: var(--space-4);
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  color: var(--white);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-full);
  font-size: var(--font-size-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  z-index: 3;
  box-shadow: 0 4px 15px rgba(59, 130, 246, 0.3);
  animation: pulse-badge 2s ease-in-out infinite;
}

@keyframes pulse-badge {
  0%, 100% {
    transform: scale(1);
    box-shadow: 0 4px 15px rgba(59, 130, 246, 0.3);
  }
  50% {
    transform: scale(1.05);
    box-shadow: 0 6px 20px rgba(59, 130, 246, 0.5);
  }
}

.talk-title {
  font-size: var(--font-size-xl);
  color: var(--text-primary);
  margin-bottom: var(--space-3);
  font-weight: 600;
  line-height: 1.3;
}

.talk-event {
  color: var(--primary-color);
  font-weight: 600;
  margin-bottom: var(--space-4);
  font-size: var(--font-size-sm);
  text-transform: uppercase;
  letter-spacing: 1px;
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  background-clip: text;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.talk-description {
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: var(--space-6);
  font-size: var(--font-size-base);
}

.talk-links {
  display: flex;
  gap: var(--space-3);
  flex-wrap: wrap;
}

.talk-link {
  background: linear-gradient(135deg, rgba(59, 130, 246, 0.1), rgba(139, 92, 246, 0.1));
  color: var(--primary-color);
  padding: var(--space-3) var(--space-5);
  border-radius: var(--radius-lg);
  border: 1px solid rgba(59, 130, 246, 0.3);
  font-size: var(--font-size-sm);
  font-weight: 600;
  transition: all var(--transition-fast);
  text-decoration: none;
  position: relative;
  overflow: hidden;
}

.talk-link::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  transition: left 0.3s ease;
  z-index: 1;
}

.talk-link span {
  position: relative;
  z-index: 2;
}

.talk-link:hover::before {
  left: 0;
}

.talk-link:hover {
  color: var(--white);
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(59, 130, 246, 0.3);
  border-color: var(--primary-color);
}

/* Companies Section */
.companies {
  background: var(--bg-secondary);
}

.companies-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-8);
}

.company-card {
  background: var(--bg-primary);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  transition: transform var(--transition-normal);
  border: 1px solid rgba(255, 255, 255, 0.1);
  box-shadow: var(--shadow-lg);
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.company-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-2xl);
  background: linear-gradient(135deg, var(--bg-primary), rgba(59, 130, 246, 0.05));
  border-color: var(--primary-color);
}

.company-logo {
  width: 120px;
  height: 60px;
  margin-bottom: var(--space-6);
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: var(--space-4);
}

.company-logo img {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
}

.company-info h3 {
  font-size: var(--font-size-xl);
  margin-bottom: var(--space-2);
  color: var(--text-primary);
}

.company-role {
  color: var(--primary-color);
  font-weight: 600;
  margin-bottom: var(--space-4);
  font-size: var(--font-size-base);
}

.company-description {
  color: var(--text-secondary);
  line-height: 1.6;
  margin: 0;
}

/* Contact Section */
.contact-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-16);
}

.contact-item {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  margin-bottom: var(--space-6);
}

.contact-icon {
  font-size: var(--font-size-2xl);
  width: 50px;
  height: 50px;
  background: rgba(59, 130, 246, 0.1);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid rgba(59, 130, 246, 0.2);
}

.contact-text h4 {
  margin-bottom: var(--space-1);
  color: var(--text-primary);
}

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

/* Form Styles */
.contact-form {
  background: var(--bg-secondary);
  padding: var(--space-8);
  border-radius: var(--radius-xl);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.form-group {
  margin-bottom: var(--space-6);
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: var(--space-4);
  background: var(--bg-primary);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-lg);
  color: var(--text-primary);
  font-size: var(--font-size-base);
  transition: all var(--transition-normal);
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--text-muted);
}

/* Footer */
.footer {
  background: var(--bg-secondary);
  padding: var(--space-8) 0;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-4);
}

.footer-links {
  display: flex;
  gap: var(--space-6);
}

.footer-links a {
  color: var(--text-muted);
  transition: color var(--transition-fast);
}

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

/* Blog Section */
.blog {
  background: var(--bg-primary);
  padding: var(--space-20) 0;
}

.blog-posts {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-8);
  margin-top: var(--space-12);
}

.blog-post {
  background: var(--bg-secondary);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  border: 1px solid rgba(255, 255, 255, 0.1);
  transition: all var(--transition-normal);
}

.blog-post:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-xl);
  border-color: var(--primary-color);
}

.blog-post-title {
  margin-bottom: var(--space-4);
}

.blog-post-title a {
  color: var(--text-primary);
  font-weight: 600;
  font-size: var(--font-size-xl);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.blog-post-title a:hover {
  color: var(--primary-color);
}

.blog-post-excerpt {
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: var(--space-4);
}

.blog-post-meta {
  padding-top: var(--space-4);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.blog-post-date {
  color: var(--text-muted);
  font-size: var(--font-size-sm);
}

.blog-loading {
  text-align: center;
  color: var(--text-muted);
  padding: var(--space-8);
}

.blog-link-container {
  text-align: center;
  margin-top: var(--space-12);
}

/* Responsive Design */
@media (max-width: 1024px) {
  .hero-content {
    grid-template-columns: 1fr;
    text-align: center;
    gap: var(--space-12);
  }
  
  .about-content {
    grid-template-columns: 1fr;
    text-align: center;
  }
  
  .contact-content {
    grid-template-columns: 1fr;
    gap: var(--space-12);
  }
}

@media (max-width: 768px) {
  .container {
    padding: 0 var(--space-4);
  }
  
  .nav-container {
    padding: 0 var(--space-4);
  }
  
  .nav-menu {
    position: fixed;
    top: 70px;
    left: 0;
    right: 0;
    background: var(--bg-primary);
    flex-direction: column;
    padding: var(--space-6);
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
  }
  
  .nav-menu.active {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }
  
  .nav-toggle {
    display: flex;
  }
  
  .nav-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
  }
  
  .nav-toggle.active span:nth-child(2) {
    opacity: 0;
  }
  
  .nav-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -6px);
  }
  
  .hero-title {
    font-size: var(--font-size-4xl);
  }
  
  .hero-buttons {
    justify-content: center;
  }
  
  .projects-grid {
    grid-template-columns: 1fr;
  }
  
  .companies-grid {
    grid-template-columns: 1fr;
  }
  
  .speaking-stats {
    grid-template-columns: 1fr;
  }
  
  .talks-grid {
    grid-template-columns: 1fr;
  }
  
  .talk-links {
    justify-content: center;
  }
  
  .about-stats {
    grid-template-columns: 1fr;
    gap: var(--space-6);
  }
  
  .skills-grid {
    grid-template-columns: 1fr;
  }
  
  .footer-content {
    flex-direction: column;
    text-align: center;
    gap: var(--space-6);
  }
  
  .footer-links {
    flex-direction: column;
    gap: var(--space-4);
    align-items: center;
  }
  
  .blog-posts {
    grid-template-columns: 1fr;
    gap: var(--space-6);
  }
  
  section {
    padding: var(--space-16) 0;
  }
}

@media (max-width: 480px) {
  .hero-title {
    font-size: var(--font-size-3xl);
  }
  
  .section-title {
    font-size: var(--font-size-3xl);
  }
  
  .floating-card {
    padding: var(--space-4);
  }
  
  .code-preview {
    width: 250px;
  }
  
  .hero-buttons {
    flex-direction: column;
    width: 100%;
  }
  
  .btn {
    width: 100%;
  }
  
  .footer-links {
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--space-3);
  }
  
  .footer-links a {
    font-size: var(--font-size-sm);
  }
}