/* ===================================
   Modern Portfolio Design System
   =================================== */

/* CSS Variables */
:root {
  /* Colors */
  --primary: #6366f1;
  --primary-dark: #4f46e5;
  --secondary: #8b5cf6;
  --accent: #06b6d4;
  --success: #10b981;
  --warning: #f59e0b;
  --error: #ef4444;
  
  /* Neutral Colors */
  --white: #ffffff;
  --gray-50: #f8fafc;
  --gray-100: #f1f5f9;
  --gray-200: #e2e8f0;
  --gray-300: #cbd5e1;
  --gray-400: #94a3b8;
  --gray-500: #64748b;
  --gray-600: #475569;
  --gray-700: #334155;
  --gray-800: #1e293b;
  --gray-900: #0f172a;
  --black: #000000;
  
  /* Gradients */
  --gradient-primary: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);
  --gradient-secondary: linear-gradient(135deg, #06b6d4 0%, #3b82f6 100%);
  --gradient-accent: linear-gradient(135deg, #f59e0b 0%, #ef4444 100%);
  --gradient-dark: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
  
  /* Typography */
  --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', 'Monaco', 'Cascadia Code', monospace;
  
  /* Font Sizes */
  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-base: 1rem;
  --text-lg: 1.125rem;
  --text-xl: 1.25rem;
  --text-2xl: 1.5rem;
  --text-3xl: 1.875rem;
  --text-4xl: 2.25rem;
  --text-5xl: 3rem;
  --text-6xl: 3.75rem;
  --text-7xl: 4.5rem;
  
  /* 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: 0.375rem;
  --radius-lg: 0.5rem;
  --radius-xl: 0.75rem;
  --radius-2xl: 1rem;
  --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-backdrop: 1040;
  --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-primary);
  font-size: var(--text-base);
  line-height: 1.6;
  color: var(--gray-300);
  background-color: var(--gray-900);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.2;
  color: var(--white);
  margin-bottom: var(--space-4);
}

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

p {
  margin-bottom: var(--space-4);
  color: var(--gray-400);
}

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

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

/* Utility Classes */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-4);
}

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

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

.d-flex { display: flex; }
.d-grid { display: grid; }
.d-block { display: block; }
.d-none { display: none; }

.align-center { align-items: center; }
.align-start { align-items: flex-start; }
.align-end { align-items: flex-end; }

.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.justify-start { justify-content: flex-start; }
.justify-end { justify-content: flex-end; }

.flex-column { flex-direction: column; }
.flex-wrap { flex-wrap: wrap; }

.w-full { width: 100%; }
.h-full { height: 100%; }

.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: var(--space-1); }
.mb-2 { margin-bottom: var(--space-2); }
.mb-3 { margin-bottom: var(--space-3); }
.mb-4 { margin-bottom: var(--space-4); }
.mb-5 { margin-bottom: var(--space-5); }
.mb-6 { margin-bottom: var(--space-6); }
.mb-8 { margin-bottom: var(--space-8); }

.mt-0 { margin-top: 0; }
.mt-1 { margin-top: var(--space-1); }
.mt-2 { margin-top: var(--space-2); }
.mt-3 { margin-top: var(--space-3); }
.mt-4 { margin-top: var(--space-4); }
.mt-5 { margin-top: var(--space-5); }
.mt-6 { margin-top: var(--space-6); }
.mt-8 { margin-top: var(--space-8); }

.p-0 { padding: 0; }
.p-1 { padding: var(--space-1); }
.p-2 { padding: var(--space-2); }
.p-3 { padding: var(--space-3); }
.p-4 { padding: var(--space-4); }
.p-5 { padding: var(--space-5); }
.p-6 { padding: var(--space-6); }
.p-8 { padding: var(--space-8); }

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  border-radius: var(--radius-lg);
  font-weight: 600;
  font-size: var(--text-sm);
  text-decoration: none;
  border: 2px solid transparent;
  cursor: pointer;
  transition: var(--transition-normal);
  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: var(--transition-slow);
}

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

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

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

.btn-outline {
  background: transparent;
  color: var(--white);
  border-color: var(--gray-600);
}

.btn-outline:hover {
  background: var(--gray-800);
  border-color: var(--primary);
  transform: translateY(-2px);
}

.btn-sm {
  padding: var(--space-2) var(--space-4);
  font-size: var(--text-xs);
}

.btn-large {
  padding: var(--space-4) var(--space-8);
  font-size: var(--text-base);
}

/* Page Loader */
.page-loader {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--gray-900);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9999;
  transition: opacity var(--transition-slow), visibility var(--transition-slow);
}

.page-loader.hidden {
  opacity: 0;
  visibility: hidden;
}

.loader-content {
  text-align: center;
}

.loader-logo {
  margin-bottom: var(--space-6);
}

.loader-logo .logo-text {
  font-size: var(--text-4xl);
  font-weight: 900;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.loader-bar {
  width: 200px;
  height: 4px;
  background: var(--gray-800);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.loader-progress {
  width: 0%;
  height: 100%;
  background: var(--gradient-primary);
  border-radius: var(--radius-full);
  animation: loaderProgress 2s ease-in-out infinite;
}

@keyframes loaderProgress {
  0% { width: 0%; }
  50% { width: 100%; }
  100% { width: 0%; }
}

/* Navigation */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-fixed);
  background: rgba(15, 23, 42, 0.8);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  transition: var(--transition-normal);
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: var(--space-4);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo .logo-text {
  font-size: var(--text-xl);
  font-weight: 900;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

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

.nav-link {
  color: var(--gray-300);
  font-weight: 500;
  position: relative;
  transition: var(--transition-fast);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--gradient-primary);
  transition: var(--transition-normal);
}

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

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

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

.nav-toggle span {
  width: 25px;
  height: 3px;
  background: var(--white);
  border-radius: var(--radius-full);
  transition: var(--transition-normal);
}

/* Hero Section */
.hero-section {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  padding: var(--space-20) 0;
}

.hero-background {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: -1;
}

.hero-particles {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image: 
    radial-gradient(circle at 20% 80%, rgba(99, 102, 241, 0.1) 0%, transparent 50%),
    radial-gradient(circle at 80% 20%, rgba(139, 92, 246, 0.1) 0%, transparent 50%),
    radial-gradient(circle at 40% 40%, rgba(6, 182, 212, 0.1) 0%, transparent 50%);
}

.hero-grid {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image: 
    linear-gradient(rgba(255, 255, 255, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.05) 1px, transparent 1px);
  background-size: 50px 50px;
  opacity: 0.3;
}

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

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  background: rgba(99, 102, 241, 0.1);
  border: 1px solid rgba(99, 102, 241, 0.2);
  border-radius: var(--radius-full);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--primary);
  margin-bottom: var(--space-6);
}

.hero-title {
  font-size: var(--text-6xl);
  font-weight: 900;
  line-height: 1.1;
  margin-bottom: var(--space-6);
}

.hero-description {
  font-size: var(--text-lg);
  color: var(--gray-400);
  margin-bottom: var(--space-8);
  max-width: 500px;
}

.hero-stats {
  display: flex;
  gap: var(--space-8);
  margin-bottom: var(--space-8);
}

.stat-item {
  text-align: center;
}

.stat-number {
  display: block;
  font-size: var(--text-3xl);
  font-weight: 900;
  color: var(--primary);
  margin-bottom: var(--space-1);
}

.stat-label {
  font-size: var(--text-sm);
  color: var(--gray-500);
  font-weight: 500;
}

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

.hero-visual {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
}

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

.hero-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: var(--radius-2xl);
  border: 4px solid rgba(255, 255, 255, 0.1);
  display: block;
  opacity: 1;
  visibility: visible;
}

.hero-image-bg {
  position: absolute;
  top: 20px;
  left: 20px;
  right: -20px;
  bottom: -20px;
  background: var(--gradient-primary);
  border-radius: var(--radius-2xl);
  z-index: -1;
  opacity: 0.3;
}

.tech-stack {
  position: absolute;
  display: flex;
  gap: var(--space-3);
  flex-wrap: wrap;
  justify-content: center;
  max-width: 300px;
  left: 50%;
  transform: translateX(-50%);
  bottom: -60px;
}

.tech-item {
  width: 45px;
  height: 45px;
  background: var(--gray-700);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  border: 2px solid rgba(255, 255, 255, 0.2);
  transition: var(--transition-normal);
  position: relative;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
  flex-shrink: 0;
}

.tech-item:hover {
  transform: translateY(-5px);
  border-color: var(--primary);
  box-shadow: var(--shadow-lg);
  background: var(--gray-600);
}

.tech-item img {
  width: 25px;
  height: 25px;
  object-fit: contain;
  filter: brightness(1.5) contrast(1.3) drop-shadow(0 1px 2px rgba(0, 0, 0, 0.5));
  opacity: 1 !important;
  background: rgba(255, 255, 255, 0.2);
  border-radius: 4px;
  padding: 2px;
  z-index: 1;
  position: relative;
}

.tech-item img:not([src]), 
.tech-item img[src=""],
.tech-item img[src*="undefined"],
.tech-item img[src*="null"] {
  display: none;
}

.tech-item .fallback-icon {
  width: 25px;
  height: 25px;
  display: none;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  z-index: 0;
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.5);
  background: rgba(255, 255, 255, 0.1);
  border-radius: 4px;
  padding: 2px;
}

.tech-item img:not([src]) + .fallback-icon,
.tech-item img[src=""] + .fallback-icon,
.tech-item img[src*="undefined"] + .fallback-icon,
.tech-item img[src*="null"] + .fallback-icon,
.tech-item img[style*="display: none"] + .fallback-icon {
  display: flex;
}

/* Hide fallback when image is loaded and visible */
.tech-item img[style*="display: block"] + .fallback-icon,
.tech-item img[style*="display: inline"] + .fallback-icon {
  display: none;
}

/* Specific colors for tech stack fallback icons */
.tech-item .lab.la-react {
  color: #61DAFB;
}

.tech-item .lab.la-angular {
  color: #DD0031;
}

.tech-item .lab.la-vuejs {
  color: #4FC08D;
}

.tech-item .las.la-code {
  color: #3178C6;
}

.tech-item::before {
  content: attr(data-tech);
  position: absolute;
  bottom: -30px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--gray-800);
  color: var(--white);
  padding: var(--space-1) var(--space-2);
  border-radius: var(--radius-md);
  font-size: var(--text-xs);
  opacity: 0;
  transition: var(--transition-normal);
  white-space: nowrap;
}

.tech-item:hover::before {
  opacity: 1;
}

.scroll-indicator {
  position: absolute;
  bottom: var(--space-8);
  left: 50%;
  transform: translateX(-50%);
  text-align: center;
  color: var(--gray-500);
  font-size: var(--text-sm);
}

.scroll-arrow {
  width: 2px;
  height: 30px;
  background: var(--gradient-primary);
  margin: 0 auto var(--space-2);
  border-radius: var(--radius-full);
  animation: scrollBounce 2s infinite;
}

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

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

.section-badge {
  display: inline-block;
  padding: var(--space-2) var(--space-4);
  background: rgba(99, 102, 241, 0.1);
  border: 1px solid rgba(99, 102, 241, 0.2);
  border-radius: var(--radius-full);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--primary);
  margin-bottom: var(--space-4);
}

.section-title {
  font-size: var(--text-4xl);
  font-weight: 800;
  margin-bottom: var(--space-4);
}

/* About Section */
.about-section {
  padding: var(--space-24) 0;
  background: var(--gray-800);
}

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

.lead-text {
  font-size: var(--text-lg);
  color: var(--white);
  font-weight: 500;
  margin-bottom: var(--space-6);
}

.about-highlights {
  margin-top: var(--space-8);
}

.highlight-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-3);
  color: var(--gray-300);
}

.highlight-item i {
  color: var(--success);
  font-size: var(--text-lg);
}

.experience-card {
  background: var(--gray-900);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.card-header h3 {
  color: var(--white);
  margin-bottom: var(--space-4);
}

.timeline {
  position: relative;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 20px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--gradient-primary);
}

.timeline-item {
  position: relative;
  padding-left: var(--space-12);
  margin-bottom: var(--space-6);
}

.timeline-marker {
  position: absolute;
  left: 16px;
  top: 8px;
  width: 10px;
  height: 10px;
  background: var(--primary);
  border-radius: 50%;
  border: 2px solid var(--gray-900);
}

.timeline-content h4 {
  color: var(--white);
  font-size: var(--text-lg);
  margin-bottom: var(--space-1);
}

.timeline-content p {
  color: var(--primary);
  font-weight: 500;
  margin-bottom: var(--space-1);
}

.timeline-date {
  color: var(--gray-500);
  font-size: var(--text-sm);
}

/* Experience Section */
.experience-section {
  padding: var(--space-24) 0;
}

.experience-grid {
  display: grid;
  gap: var(--space-8);
}

.experience-card {
  background: var(--gray-800);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  border: 1px solid rgba(255, 255, 255, 0.1);
  transition: var(--transition-normal);
}

.experience-card:hover {
  transform: translateY(-5px);
  border-color: var(--primary);
  box-shadow: var(--shadow-xl);
}

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: var(--space-6);
}

.company-info {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex-wrap: wrap;
}

.company-info h3 {
  color: var(--white);
  font-size: var(--text-xl);
  margin-bottom: 0;
}

.company-info h4 {
  color: var(--primary);
  font-size: var(--text-lg);
  margin-bottom: 0;
}

.duration {
  color: var(--gray-500);
  font-size: var(--text-sm);
  margin-left: auto;
}

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

.tech-stack {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin: var(--space-4) 0;
  align-items: flex-start;
}

.tech-tag {
  padding: var(--space-1) var(--space-3);
  background: rgba(99, 102, 241, 0.1);
  border: 1px solid rgba(99, 102, 241, 0.2);
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  color: var(--primary);
  font-weight: 500;
  white-space: nowrap;
  flex-shrink: 0;
  margin-bottom: var(--space-1);
}

.achievements {
  list-style: none;
  margin-top: var(--space-4);
}

.achievements li {
  position: relative;
  padding-left: var(--space-6);
  margin-bottom: var(--space-2);
  color: var(--gray-300);
}

.achievements li::before {
  content: '▹';
  position: absolute;
  left: 0;
  color: var(--primary);
  font-weight: bold;
}

/* Projects Section */
.projects-section {
  padding: var(--space-24) 0;
  background: var(--gray-800);
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: var(--space-8);
  margin-bottom: var(--space-12);
}

.project-card {
  background: var(--gray-900);
  border-radius: var(--radius-xl);
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.1);
  transition: var(--transition-normal);
}

.project-card:hover {
  transform: translateY(-5px);
  border-color: var(--primary);
  box-shadow: var(--shadow-xl);
}

.project-card.featured {
  grid-column: span 2;
}

.project-image {
  position: relative;
  height: 200px;
  overflow: hidden;
  background: var(--gray-800);
}

.project-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition-normal);
  display: block;
  opacity: 1;
  visibility: visible;
}

.project-image img:not([src]), 
.project-image img[src=""],
.project-image img[src*="undefined"],
.project-image img[src*="null"] {
  display: none;
}

.project-image img:not([src]) + .project-placeholder,
.project-image img[src=""] + .project-placeholder,
.project-image img[src*="undefined"] + .project-placeholder,
.project-image img[src*="null"] + .project-placeholder {
  display: flex;
}

.project-placeholder {
  width: 100%;
  height: 100%;
  background: var(--gradient-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  font-size: var(--text-4xl);
}

.project-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.8);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: var(--transition-normal);
}

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

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

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

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

.project-category {
  color: var(--primary);
  font-size: var(--text-sm);
  font-weight: 500;
  margin-bottom: var(--space-2);
}

.project-content h3 {
  color: var(--white);
  font-size: var(--text-xl);
  margin-bottom: var(--space-3);
}

.project-content p {
  color: var(--gray-400);
  margin-bottom: var(--space-4);
}

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

.projects-cta {
  text-align: center;
}

/* Skills Section */
.skills-section {
  padding: var(--space-24) 0;
}

.skills-content {
  display: grid;
  gap: var(--space-12);
}

.skills-category h3 {
  color: var(--white);
  font-size: var(--text-2xl);
  margin-bottom: var(--space-6);
  text-align: center;
}

.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--space-6);
}

.skill-item {
  background: var(--gray-800);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  border: 1px solid rgba(255, 255, 255, 0.1);
  transition: var(--transition-normal);
}

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

.skill-icon {
  width: 50px;
  height: 50px;
  background: var(--gray-600);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-4);
  position: relative;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.3);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
}

.skill-icon img {
  width: 30px;
  height: 30px;
  object-fit: contain;
  display: block;
  max-width: 100%;
  max-height: 100%;
  z-index: 1;
  position: relative;
  filter: brightness(1.5) contrast(1.3) drop-shadow(0 1px 2px rgba(0, 0, 0, 0.5));
  opacity: 1 !important;
  background: rgba(255, 255, 255, 0.2);
  border-radius: 4px;
  padding: 2px;
}

.skill-icon img:not([src]), 
.skill-icon img[src=""],
.skill-icon img[src*="undefined"],
.skill-icon img[src*="null"] {
  display: none;
}

.skill-icon .fallback-icon {
  width: 30px;
  height: 30px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  z-index: 0;
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.5);
  background: rgba(255, 255, 255, 0.1);
  border-radius: 4px;
  padding: 2px;
}

.skill-icon img:not([src]) + .fallback-icon,
.skill-icon img[src=""] + .fallback-icon,
.skill-icon img[src*="undefined"] + .fallback-icon,
.skill-icon img[src*="null"] + .fallback-icon,
.skill-icon img[style*="display: none"] + .fallback-icon {
  display: flex;
}

/* Hide fallback when image is loaded and visible */
.skill-icon img[style*="display: block"] + .fallback-icon,
.skill-icon img[style*="display: inline"] + .fallback-icon {
  display: none;
}

/* Specific colors for fallback icons */
.skill-icon .lab.la-react {
  color: #61DAFB;
}

.skill-icon .lab.la-angular {
  color: #DD0031;
}

.skill-icon .lab.la-vuejs {
  color: #4FC08D;
}

.skill-icon .las.la-code {
  color: #3178C6;
}

.skill-icon .lab.la-css3 {
  color: #06B6D4;
}

.skill-icon .lab.la-aws {
  color: #FF9900;
}

.skill-icon .las.la-mobile {
  color: #02569B;
}

.skill-icon .lab.la-node-js {
  color: #339933;
}

.skill-icon .las.la-server {
  color: #FF2D20;
}

.skill-icon .lab.la-docker {
  color: #2496ED;
}

.skill-icon .las.la-vial {
  color: #10B981;
}

/* Hover effect for skill icons */
.skill-item:hover .skill-icon {
  background: var(--gray-600);
  border-color: var(--primary);
  transform: scale(1.05);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.4);
}

.skill-info h4 {
  color: var(--white);
  font-size: var(--text-lg);
  margin-bottom: var(--space-3);
}

.skill-level {
  width: 100%;
  height: 6px;
  background: var(--gray-700);
  border-radius: var(--radius-full);
  overflow: hidden;
}

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

/* Contact Section */
.contact-section {
  padding: var(--space-24) 0;
  background: var(--gray-800);
}

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

.contact-info {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}

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

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

.contact-details h4 {
  color: var(--white);
  font-size: var(--text-lg);
  margin-bottom: var(--space-1);
}

.contact-details p {
  color: var(--gray-400);
}

.contact-actions {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.social-links {
  display: flex;
  gap: var(--space-4);
  margin-top: var(--space-6);
}

.social-link {
  width: 50px;
  height: 50px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--gray-400);
  font-size: var(--text-xl);
  transition: var(--transition-normal);
}

.social-link:hover {
  color: var(--white);
  border-color: var(--primary);
  transform: translateY(-2px);
}

/* Footer */
.footer {
  background: var(--gray-900);
  padding: var(--space-12) 0 var(--space-6);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-8);
}

.footer-logo .logo-text {
  font-size: var(--text-xl);
  font-weight: 900;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.footer-logo p {
  color: var(--gray-500);
  margin-bottom: 0;
}

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

.footer-links a {
  color: var(--gray-400);
  transition: var(--transition-fast);
}

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

.footer-social {
  display: flex;
  gap: var(--space-4);
}

.footer-social a {
  width: 40px;
  height: 40px;
  background: var(--gray-800);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--gray-400);
  transition: var(--transition-normal);
}

.footer-social a:hover {
  color: var(--white);
  background: var(--primary);
}

.footer-bottom {
  text-align: center;
  padding-top: var(--space-6);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-bottom p {
  color: var(--gray-500);
  margin-bottom: 0;
}

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

@media (max-width: 768px) {
  .nav-menu {
    display: none;
  }
  
  .nav-toggle {
    display: flex !important;
  }
  
  /* Hero Section Mobile Responsiveness */
  .hero-section {
    padding: var(--space-12) 0;
    min-height: 100vh;
  }
  
  .hero-content {
    grid-template-columns: 1fr;
    gap: var(--space-8);
    text-align: center;
  }
  
  .hero-title {
    font-size: var(--text-4xl);
    line-height: 1.2;
    margin-bottom: var(--space-4);
  }
  
  .hero-description {
    font-size: var(--text-base);
    margin-bottom: var(--space-6);
    max-width: 100%;
  }
  
  .hero-stats {
    flex-direction: row;
    gap: var(--space-4);
    justify-content: center;
    margin-bottom: var(--space-6);
  }
  
  .stat-item {
    flex: 1;
    max-width: 120px;
  }
  
  .stat-number {
    font-size: var(--text-2xl);
  }
  
  .stat-label {
    font-size: var(--text-xs);
  }
  
  .hero-actions {
    flex-direction: column;
    align-items: center;
    gap: var(--space-3);
  }
  
  .hero-actions .btn {
    width: 100%;
    max-width: 280px;
    justify-content: center;
  }
  
  .hero-visual {
    order: -1;
    margin-bottom: var(--space-6);
  }
  
  .hero-image {
    width: 250px;
    height: 250px;
    margin: 0 auto;
  }
  
  .tech-stack {
    position: relative;
    bottom: auto;
    left: auto;
    transform: none;
    max-width: 100%;
    justify-content: center;
    margin-top: var(--space-4);
  }
  
  .tech-item {
    width: 40px;
    height: 40px;
  }
  
  .tech-item img {
    width: 22px;
    height: 22px;
  }
  
  .tech-item .fallback-icon {
    width: 22px;
    height: 22px;
    font-size: 18px;
  }
  
  .projects-grid {
    grid-template-columns: 1fr;
  }
  
  .skills-grid {
    grid-template-columns: 1fr;
  }
  
  .footer-content {
    flex-direction: column;
    gap: var(--space-6);
    text-align: center;
  }
  
  .footer-links {
    justify-content: center;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 var(--space-3);
  }
  
  .hero-section {
    padding: var(--space-8) 0;
  }
  
  .hero-title {
    font-size: var(--text-3xl);
    line-height: 1.3;
  }
  
  .hero-description {
    font-size: var(--text-sm);
    margin-bottom: var(--space-4);
  }
  
  .hero-stats {
    gap: var(--space-3);
  }
  
  .stat-item {
    max-width: 100px;
  }
  
  .stat-number {
    font-size: var(--text-xl);
  }
  
  .stat-label {
    font-size: var(--text-xs);
  }
  
  .hero-actions .btn {
    max-width: 100%;
    padding: var(--space-3) var(--space-4);
  }
  
  .hero-image {
    width: 200px;
    height: 200px;
  }
  
  .tech-stack {
    gap: var(--space-1);
    margin-top: var(--space-3);
  }
  
  .tech-item {
    width: 35px;
    height: 35px;
  }
  
  .tech-item img {
    width: 20px;
    height: 20px;
  }
  
  .tech-item .fallback-icon {
    width: 20px;
    height: 20px;
    font-size: 16px;
  }
  
  .section-title {
    font-size: var(--text-3xl);
  }
  
  .experience-card {
    padding: var(--space-6);
  }
  
  .project-content {
    padding: var(--space-4);
  }
}

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

@keyframes fadeInLeft {
  from {
    opacity: 0;
    transform: translateX(-30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

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

.fade-in-up {
  animation: fadeInUp 0.6s ease-out;
}

.fade-in-left {
  animation: fadeInLeft 0.6s ease-out;
}

.fade-in-right {
  animation: fadeInRight 0.6s ease-out;
}

/* Scroll Animations */
.scroll-animation {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.6s ease-out;
}

.scroll-animation.animate {
  opacity: 1;
  transform: translateY(0);
}

/* Skill Bar Animation */
.skill-bar.animate {
  animation: skillBarFill 1.5s ease-out forwards;
}

@keyframes skillBarFill {
  from { width: 0; }
  to { width: var(--skill-level); }
}

/* Responsive adjustments for tech stack */
@media (max-width: 768px) {
  .tech-stack {
    gap: var(--space-2);
    max-width: 280px;
    bottom: -50px;
  }
  
  .tech-item {
    width: 40px;
    height: 40px;
  }
  
  .tech-item img {
    width: 22px;
    height: 22px;
  }
  
  .tech-item .fallback-icon {
    width: 22px;
    height: 22px;
    font-size: 18px;
  }
}

@media (max-width: 480px) {
  .tech-stack {
    gap: var(--space-1);
    max-width: 250px;
    bottom: -40px;
  }
  
  .tech-item {
    width: 35px;
    height: 35px;
  }
  
  .tech-item img {
    width: 20px;
    height: 20px;
  }
  
  .tech-item .fallback-icon {
    width: 20px;
    height: 20px;
    font-size: 16px;
  }
}

/* Experience Section Tech Stack - Always Visible */
.experience-card .tech-stack {
  display: flex !important;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin: var(--space-4) 0;
  align-items: flex-start;
  opacity: 1 !important;
  visibility: visible !important;
  position: static !important;
  transform: none !important;
  justify-content: flex-start;
}

.experience-card .tech-tag {
  padding: var(--space-1) var(--space-3);
  background: rgba(99, 102, 241, 0.1);
  border: 1px solid rgba(99, 102, 241, 0.2);
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  color: var(--primary);
  font-weight: 500;
  white-space: nowrap;
  flex-shrink: 0;
  margin-bottom: 0;
  opacity: 1 !important;
  visibility: visible !important;
  display: inline-block !important;
  min-width: fit-content;
}

/* Responsive adjustments for experience tech stack */
@media (max-width: 768px) {
  .experience-card .tech-stack {
    gap: var(--space-1);
  }
  
  .experience-card .tech-tag {
    font-size: var(--text-xs);
    padding: var(--space-1) var(--space-2);
  }
}

@media (max-width: 480px) {
  .experience-card .tech-stack {
    gap: var(--space-1);
    justify-content: flex-start;
  }
  
  .experience-card .tech-tag {
    font-size: var(--text-xs);
    padding: var(--space-1) var(--space-2);
  }
}

/* Additional Hero Section Mobile Improvements */
@media (max-width: 768px) {
  .hero-badge {
    margin-bottom: var(--space-4);
    font-size: var(--text-xs);
    padding: var(--space-1) var(--space-3);
  }
  
  .hero-image-bg {
    top: 15px;
    left: 15px;
    right: -15px;
    bottom: -15px;
  }
  
  .scroll-indicator {
    bottom: var(--space-4);
  }
  
  .scroll-indicator span {
    font-size: var(--text-xs);
  }
}

@media (max-width: 480px) {
  .hero-badge {
    margin-bottom: var(--space-3);
    font-size: var(--text-xs);
    padding: var(--space-1) var(--space-2);
  }
  
  .hero-image-bg {
    top: 10px;
    left: 10px;
    right: -10px;
    bottom: -10px;
  }
  
  .scroll-indicator {
    bottom: var(--space-3);
  }
  
  .scroll-arrow {
    height: 20px;
  }
}

/* Mobile Navigation Styles */
@media (max-width: 768px) {
  .nav-menu {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(15, 23, 42, 0.98);
    backdrop-filter: blur(20px);
    padding: calc(80px + var(--space-6)) var(--space-4) var(--space-6);
    flex-direction: column;
    gap: var(--space-4);
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease-in-out;
    z-index: 9999;
    display: flex;
    justify-content: flex-start;
    align-items: center;
  }
  
  .nav-menu.active {
    opacity: 1;
    visibility: visible;
  }
  
  .nav-link {
    font-size: var(--text-xl);
    padding: var(--space-4) 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    width: 100%;
    text-align: center;
    color: var(--white);
    font-weight: 500;
  }
  
  .nav-link:last-child {
    border-bottom: none;
  }
  
  .nav-link:hover,
  .nav-link.active {
    color: var(--primary);
  }
  
  .nav-toggle {
    display: flex !important;
    flex-direction: column;
    gap: 4px;
    cursor: pointer;
    padding: var(--space-2);
    z-index: 10000;
    background: transparent;
    border: none;
    outline: none;
  }
  
  .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);
  }
  
  .nav-toggle span {
    width: 25px;
    height: 3px;
    background: var(--white);
    border-radius: var(--radius-full);
    transition: all 0.3s ease-in-out;
    display: block;
  }
  
  /* Prevent body scroll when menu is open */
  body.menu-open {
    overflow: hidden;
  }
}

/* Additional Mobile Navigation Improvements */
@media (max-width: 480px) {
  .nav-container {
    padding: var(--space-3);
  }
  
  .nav-logo .logo-text {
    font-size: var(--text-lg);
  }
  
  .nav-menu {
    padding: var(--space-4) var(--space-3);
  }
  
  .nav-link {
    font-size: var(--text-base);
    padding: var(--space-2) 0;
  }
  
  .nav-toggle {
    padding: var(--space-1);
  }
  
  .nav-toggle span {
    width: 22px;
    height: 2px;
  }
}

/* Navbar scroll effect */
.navbar.scrolled {
  background: rgba(15, 23, 42, 0.95);
  backdrop-filter: blur(20px);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}