/* ==============================================
   Modern Portfolio Website - CSS Styles
   Features: Glassmorphism design, responsive layout, professional typography
   ============================================== */

/* ==============================================
   CSS Custom Properties (Variables)
   ============================================== */
:root {
  /* Color Palette - Simple and professional */
  --primary-color: #6366f1;
  --primary-light: #818cf8;
  --primary-dark: #4f46e5;
  --secondary-color: #f59e0b;
  --accent-color: #06b6d4;
  
  /* Neutral Colors */
  --white: #ffffff;
  --black: #000000;
  --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;
  
  /* Glass Effect Colors */
  --glass-bg: rgba(255, 255, 255, 0.1);
  --glass-border: rgba(255, 255, 255, 0.2);
  --glass-shadow: rgba(0, 0, 0, 0.1);
  
  /* Typography */
  --font-family-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-family-mono: 'JetBrains Mono', 'Fira Code', Consolas, monospace;
  
  /* Font Sizes */
  --text-xs: 0.75rem;    /* 12px */
  --text-sm: 0.875rem;   /* 14px */
  --text-base: 1rem;     /* 16px */
  --text-lg: 1.125rem;   /* 18px */
  --text-xl: 1.25rem;    /* 20px */
  --text-2xl: 1.5rem;    /* 24px */
  --text-3xl: 1.875rem;  /* 30px */
  --text-4xl: 2.25rem;   /* 36px */
  --text-5xl: 3rem;      /* 48px */
  --text-6xl: 3.75rem;   /* 60px */
  
  /* Spacing */
  --spacing-1: 0.25rem;  /* 4px */
  --spacing-2: 0.5rem;   /* 8px */
  --spacing-3: 0.75rem;  /* 12px */
  --spacing-4: 1rem;     /* 16px */
  --spacing-5: 1.25rem;  /* 20px */
  --spacing-6: 1.5rem;   /* 24px */
  --spacing-8: 2rem;     /* 32px */
  --spacing-10: 2.5rem;  /* 40px */
  --spacing-12: 3rem;    /* 48px */
  --spacing-16: 4rem;    /* 64px */
  --spacing-20: 5rem;    /* 80px */
  --spacing-24: 6rem;    /* 96px */
  
  /* Border Radius */
  --radius-sm: 0.375rem;
  --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 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  
  /* Transitions */
  --transition-fast: 150ms ease-in-out;
  --transition-medium: 300ms ease-in-out;
  --transition-slow: 500ms ease-in-out;
  
  /* Layout */
  --container-max-width: 1200px;
  --header-height: 80px;
  --section-padding: var(--spacing-20);
  
  /* Z-index */
  --z-dropdown: 1000;
  --z-sticky: 1020;
  --z-fixed: 1030;
  --z-modal: 1040;
  --z-popover: 1050;
  --z-tooltip: 1060;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-family-primary);
  font-size: var(--text-base);
  font-weight: 400;
  line-height: 1.6;
  color: var(--gray-800);
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  background-attachment: fixed;
  min-height: 100vh;
  overflow-x: hidden;
}

/* Enhanced scrollbar styling */
::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: var(--glass-bg);
  backdrop-filter: blur(10px);
}

::-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;
  color: var(--gray-900);
  margin-bottom: var(--spacing-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(--spacing-4);
}

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

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

/* ==============================================
   Utility Classes
   ============================================== */
.container {
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-6);
}

.section {
  padding: var(--section-padding) 0;
}

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

.hidden { display: none !important; }
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* ==============================================
   Glassmorphism Components
   ============================================== */
.glass-card {
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
  transition: all var(--transition-medium);
}

.glass-card:hover {
  background: rgba(255, 255, 255, 0.15);
  transform: translateY(-5px);
  box-shadow: var(--shadow-xl);
}

/* ==============================================
   Button Components
   ============================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-2);
  padding: var(--spacing-3) var(--spacing-6);
  font-family: inherit;
  font-size: var(--text-base);
  font-weight: 500;
  text-decoration: none;
  border: none;
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: all var(--transition-fast);
  position: relative;
  overflow: hidden;
}

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

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

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

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

.btn-secondary {
  background: var(--glass-bg);
  color: var(--gray-800);
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(10px);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.2);
  transform: translateY(-2px);
}

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

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

.btn-full {
  width: 100%;
}

/* ==============================================
   Navigation
   ============================================== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-fixed);
  padding: var(--spacing-4) 0;
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--glass-border);
  transition: all var(--transition-medium);
}

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

.nav-logo .logo-text {
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--white);
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.nav-menu {
  display: flex;
  list-style: none;
  gap: var(--spacing-8);
}

.nav-link {
  color: var(--white);
  font-weight: 500;
  padding: var(--spacing-2) var(--spacing-4);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  position: relative;
}

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

.nav-link:hover,
.nav-link.active {
  color: var(--primary-light);
  background: rgba(255, 255, 255, 0.1);
}

.nav-link:hover::after,
.nav-link.active::after {
  width: 80%;
}

/* Mobile Menu Toggle */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 4px;
  cursor: pointer;
  padding: var(--spacing-2);
}

.hamburger .bar {
  width: 25px;
  height: 3px;
  background: var(--white);
  border-radius: var(--radius-full);
  transition: all var(--transition-fast);
}

/* ==============================================
   Hero Section
   ============================================== */
.hero-section {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--header-height) var(--spacing-6) var(--spacing-16);
  position: relative;
  overflow: hidden;
}

.hero-container {
  max-width: var(--container-max-width);
  width: 100%;
}

.hero-content {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: var(--spacing-16);
  align-items: center;
  padding: var(--spacing-12);
  margin-bottom: var(--spacing-16);
}

.hero-text {
  max-width: 600px;
}

.hero-title {
  margin-bottom: var(--spacing-6);
}

.greeting {
  display: block;
  font-size: var(--text-2xl);
  font-weight: 400;
  color: var(--white);
  opacity: 0.9;
  margin-bottom: var(--spacing-2);
}

.name {
  display: block;
  font-size: var(--text-6xl);
  font-weight: 700;
  background: linear-gradient(135deg, var(--white), var(--primary-light));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1.1;
}

.hero-subtitle {
  font-size: var(--text-2xl);
  font-weight: 600;
  color: var(--primary-light);
  margin-bottom: var(--spacing-4);
}

.hero-description {
  font-size: var(--text-lg);
  color: rgba(255, 255, 255, 0.8);
  line-height: 1.7;
  margin-bottom: var(--spacing-8);
}

.hero-buttons {
  display: flex;
  gap: var(--spacing-4);
  margin-bottom: var(--spacing-8);
}

.social-links {
  display: flex;
  gap: var(--spacing-4);
}

.social-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-full);
  color: var(--white);
  transition: all var(--transition-medium);
  backdrop-filter: blur(10px);
}

.social-link:hover {
  background: var(--primary-color);
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
}

.social-icon {
  width: 20px;
  height: 20px;
}

/* Hero Image */
.hero-image {
  position: relative;
}

.image-container {
  position: relative;
  width: 300px;
  height: 300px;
  border-radius: var(--radius-full);
  overflow: hidden;
  border: 4px solid var(--glass-border);
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
}

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

.image-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(45deg, rgba(99, 102, 241, 0.1), rgba(139, 92, 246, 0.1));
  opacity: 0;
  transition: opacity var(--transition-medium);
}

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

.image-container:hover .image-overlay {
  opacity: 1;
}

/* Scroll Indicator */
.scroll-indicator {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-2);
  color: rgba(255, 255, 255, 0.7);
  animation: bounce 2s infinite;
}

.scroll-text {
  font-size: var(--text-sm);
  font-weight: 500;
}

.scroll-arrow {
  width: 24px;
  height: 24px;
}

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

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

.section-title {
  font-size: var(--text-4xl);
  font-weight: 700;
  color: var(--white);
  margin-bottom: var(--spacing-4);
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.section-subtitle {
  font-size: var(--text-lg);
  color: rgba(255, 255, 255, 0.8);
  max-width: 600px;
  margin: 0 auto;
}

.section-footer {
  text-align: center;
  margin-top: var(--spacing-16);
}

/* ==============================================
   Projects Section
   ============================================== */
.projects-section {
  background: rgba(0, 0, 0, 0.1);
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: var(--spacing-8);
  margin-bottom: var(--spacing-16);
}

.project-card {
  position: relative;
  padding: 0;
  overflow: hidden;
  transition: all var(--transition-medium);
}

.project-image {
  position: relative;
  height: 200px;
  overflow: hidden;
}

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

.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: all var(--transition-medium);
}

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

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

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

.project-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  background: var(--white);
  color: var(--gray-800);
  border-radius: var(--radius-full);
  transition: all var(--transition-fast);
}

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

.project-link svg {
  width: 20px;
  height: 20px;
}

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

.project-title {
  font-size: var(--text-xl);
  font-weight: 600;
  color: var(--white);
  margin-bottom: var(--spacing-3);
}

.project-description {
  color: rgba(255, 255, 255, 0.8);
  margin-bottom: var(--spacing-4);
  line-height: 1.6;
}

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

.tech-tag {
  padding: var(--spacing-1) var(--spacing-3);
  background: var(--primary-color);
  color: var(--white);
  border-radius: var(--radius-full);
  font-size: var(--text-sm);
  font-weight: 500;
}

.project-featured-badge {
  position: absolute;
  top: var(--spacing-4);
  right: var(--spacing-4);
  background: var(--accent-color);
  color: var(--white);
  padding: var(--spacing-1) var(--spacing-3);
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  z-index: 10;
}

/* ==============================================
   Blog Section
   ============================================== */
.blog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: var(--spacing-8);
}

.blog-card {
  padding: 0;
  overflow: hidden;
  transition: all var(--transition-medium);
}

.blog-image {
  position: relative;
  height: 200px;
  overflow: hidden;
}

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

.blog-category {
  position: absolute;
  top: var(--spacing-4);
  left: var(--spacing-4);
  padding: var(--spacing-1) var(--spacing-3);
  background: var(--secondary-color);
  color: var(--white);
  border-radius: var(--radius-full);
  font-size: var(--text-sm);
  font-weight: 500;
}

.blog-card:hover .blog-image img {
  transform: scale(1.05);
}

.blog-content {
  padding: var(--spacing-6);
}

.blog-meta {
  display: flex;
  align-items: center;
  gap: var(--spacing-4);
  margin-bottom: var(--spacing-3);
  font-size: var(--text-sm);
  color: rgba(255, 255, 255, 0.7);
}

.blog-title a {
  color: var(--white);
  font-size: var(--text-xl);
  font-weight: 600;
  transition: color var(--transition-fast);
}

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

.blog-excerpt {
  color: rgba(255, 255, 255, 0.8);
  margin-bottom: var(--spacing-4);
  line-height: 1.6;
}

.blog-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-2);
}

.tag {
  padding: var(--spacing-1) var(--spacing-3);
  background: rgba(255, 255, 255, 0.1);
  color: var(--white);
  border-radius: var(--radius-full);
  font-size: var(--text-sm);
  border: 1px solid var(--glass-border);
}

/* ==============================================
   YouTube Section
   ============================================== */
.youtube-section {
  background: rgba(0, 0, 0, 0.1);
}

.youtube-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: var(--spacing-8);
}

.video-card {
  padding: 0;
  overflow: hidden;
  transition: all var(--transition-medium);
}

.video-thumbnail {
  position: relative;
  height: 200px;
  overflow: hidden;
  cursor: pointer;
}

.video-thumbnail img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.video-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.4);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: all var(--transition-medium);
}

.play-button {
  width: 64px;
  height: 64px;
  background: var(--primary-color);
  color: var(--white);
  border: none;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.play-button:hover {
  background: var(--primary-dark);
  transform: scale(1.1);
}

.play-button svg {
  width: 24px;
  height: 24px;
  margin-left: 2px;
}

.video-duration {
  position: absolute;
  bottom: var(--spacing-2);
  right: var(--spacing-2);
  padding: var(--spacing-1) var(--spacing-2);
  background: rgba(0, 0, 0, 0.8);
  color: var(--white);
  border-radius: var(--radius-sm);
  font-size: var(--text-sm);
  font-weight: 500;
}

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

.video-card:hover .video-thumbnail img {
  transform: scale(1.05);
}

.video-content {
  padding: var(--spacing-6);
}

.video-title {
  font-size: var(--text-xl);
  font-weight: 600;
  color: var(--white);
  margin-bottom: var(--spacing-3);
  line-height: 1.4;
}

.video-description {
  color: rgba(255, 255, 255, 0.8);
  margin-bottom: var(--spacing-4);
  line-height: 1.6;
}

.video-meta {
  display: flex;
  align-items: center;
  gap: var(--spacing-4);
  font-size: var(--text-sm);
  color: rgba(255, 255, 255, 0.7);
}

/* ==============================================
   Contact Section
   ============================================== */
.contact-content {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: var(--spacing-16);
  align-items: start;
}

.contact-form {
  padding: var(--spacing-8);
}

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

.form-label {
  display: block;
  font-weight: 500;
  color: var(--white);
  margin-bottom: var(--spacing-2);
}

.form-input,
.form-textarea {
  width: 100%;
  padding: var(--spacing-4);
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  color: var(--white);
  font-family: inherit;
  font-size: var(--text-base);
  transition: all var(--transition-fast);
  backdrop-filter: blur(10px);
}

.form-input::placeholder,
.form-textarea::placeholder {
  color: rgba(255, 255, 255, 0.5);
}

.form-input:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--primary-color);
  background: rgba(255, 255, 255, 0.15);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

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

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

.contact-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-4);
  padding: var(--spacing-6);
}

.contact-icon {
  width: 48px;
  height: 48px;
  background: var(--primary-color);
  color: var(--white);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.contact-icon svg {
  width: 20px;
  height: 20px;
}

.contact-details h3 {
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--white);
  margin-bottom: var(--spacing-1);
}

.contact-details p {
  color: rgba(255, 255, 255, 0.8);
  margin: 0;
}

/* ==============================================
   Footer
   ============================================== */
.footer {
  background: rgba(0, 0, 0, 0.2);
  backdrop-filter: blur(20px);
  border-top: 1px solid var(--glass-border);
  padding: var(--spacing-16) 0 var(--spacing-8);
}

.footer-content {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: var(--spacing-16);
  margin-bottom: var(--spacing-12);
}

.footer-title {
  font-size: var(--text-2xl);
  font-weight: 700;
  color: var(--white);
  margin-bottom: var(--spacing-4);
}

.footer-description {
  color: rgba(255, 255, 255, 0.8);
  line-height: 1.6;
}

.footer-subtitle {
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--white);
  margin-bottom: var(--spacing-4);
}

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

.footer-links li {
  margin-bottom: var(--spacing-2);
}

.footer-links a {
  color: rgba(255, 255, 255, 0.7);
  transition: color var(--transition-fast);
}

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

.footer-social {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-2);
}

.footer-social-link {
  color: rgba(255, 255, 255, 0.7);
  transition: color var(--transition-fast);
}

.footer-social-link:hover {
  color: var(--primary-light);
}

.footer-bottom {
  text-align: center;
  padding-top: var(--spacing-8);
  border-top: 1px solid var(--glass-border);
  color: rgba(255, 255, 255, 0.6);
}

/* ==============================================
   Responsive Design - Mobile First Approach
   ============================================== */

/* Small devices (phones, 576px and down) */
@media (max-width: 576px) {
  :root {
    --section-padding: var(--spacing-12);
    --spacing-16: 3rem;
  }
  
  .container {
    padding: 0 var(--spacing-4);
  }
  
  /* Navigation */
  .nav-menu {
    position: fixed;
    top: var(--header-height);
    left: -100%;
    width: 100%;
    height: calc(100vh - var(--header-height));
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    border-right: 1px solid var(--glass-border);
    flex-direction: column;
    align-items: center;
    justify-content: flex-start;
    padding-top: var(--spacing-16);
    gap: var(--spacing-6);
    transition: left var(--transition-medium);
  }
  
  .nav-menu.active {
    left: 0;
  }
  
  .hamburger {
    display: flex;
  }
  
  /* Hero Section */
  .hero-content {
    grid-template-columns: 1fr;
    gap: var(--spacing-8);
    text-align: center;
    padding: var(--spacing-8);
  }
  
  .name {
    font-size: var(--text-4xl);
  }
  
  .hero-subtitle {
    font-size: var(--text-xl);
  }
  
  .hero-description {
    font-size: var(--text-base);
  }
  
  .hero-buttons {
    flex-direction: column;
    align-items: center;
  }
  
  .image-container {
    width: 250px;
    height: 250px;
  }
  
  /* Sections */
  .section-title {
    font-size: var(--text-3xl);
  }
  
  .projects-grid,
  .blog-grid,
  .youtube-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-6);
  }
  
  /* Contact */
  .contact-content {
    grid-template-columns: 1fr;
    gap: var(--spacing-8);
  }
  
  .contact-form {
    padding: var(--spacing-6);
  }
  
  /* Footer */
  .footer-content {
    grid-template-columns: 1fr;
    gap: var(--spacing-8);
    text-align: center;
  }
}

/* Medium devices (tablets, 768px and up) */
@media (min-width: 768px) {
  .projects-grid,
  .blog-grid,
  .youtube-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .contact-content {
    grid-template-columns: 1fr;
    gap: var(--spacing-12);
  }
}

/* Large devices (desktops, 1024px and up) */
@media (min-width: 1024px) {
  .projects-grid,
  .blog-grid,
  .youtube-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  
  .contact-content {
    grid-template-columns: 2fr 1fr;
  }
}

/* ==============================================
   Animation Classes
   ============================================== */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: all var(--transition-slow);
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

.slide-in-left {
  opacity: 0;
  transform: translateX(-50px);
  transition: all var(--transition-slow);
}

.slide-in-left.visible {
  opacity: 1;
  transform: translateX(0);
}

.slide-in-right {
  opacity: 0;
  transform: translateX(50px);
  transition: all var(--transition-slow);
}

.slide-in-right.visible {
  opacity: 1;
  transform: translateX(0);
}

/* ==============================================
   Loading States
   ============================================== */
.loading {
  display: inline-block;
  width: 20px;
  height: 20px;
  border: 3px solid var(--glass-border);
  border-radius: 50%;
  border-top-color: var(--primary-color);
  animation: spin 1s ease-in-out infinite;
}

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

/* ==============================================
   Print Styles
   ============================================== */
@media print {
  * {
    background: transparent !important;
    color: black !important;
    box-shadow: none !important;
    text-shadow: none !important;
  }
  
  .navbar,
  .scroll-indicator,
  .btn,
  .social-links {
    display: none !important;
  }
  
  .hero-section {
    min-height: auto;
    padding: 2rem 0;
  }
  
  .section {
    padding: 2rem 0;
    page-break-inside: avoid;
  }
  
  h2, h3 {
    page-break-after: avoid;
  }
}

/* ==============================================
   High Contrast Mode Support
   ============================================== */
@media (prefers-contrast: high) {
  :root {
    --glass-bg: rgba(255, 255, 255, 0.9);
    --glass-border: rgba(0, 0, 0, 0.8);
    --primary-color: #0000ff;
  }
  
  .glass-card {
    border-width: 2px;
  }
}

/* ==============================================
   Reduced Motion Support
   ============================================== */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
  
  .scroll-indicator {
    animation: none;
  }
}