/* ==================================================================================
   PORTFOLIO SHOWCASE SITE - COMPREHENSIVE STYLES
   ==================================================================================
   
   This stylesheet creates a modern, interactive portfolio showcase with:
   - Project cards with hover effects and iframe previews
   - Advanced filtering and search functionality  
   - Modal project views with detailed information
   - Responsive grid layouts with masonry effects
   - Professional dark theme optimized for showcasing work
   
   STRUCTURE:
   1. CSS Custom Properties (Design System Variables)
   2. Global Reset & Base Styles
   3. Navigation with Filter Dropdown
   4. Hero Section with Statistics
   5. Project Cards and Grid Layouts
   6. Modal System for Detailed Views
   7. Responsive Design and Mobile Optimization
   
   EDITING GUIDE:
   - Colors: Modify CSS custom properties in :root
   - Layout: Adjust grid templates and card sizing
   - Animations: Update transition durations and effects
   - Project styling: Customize .project-card variations
   
   ================================================================================== */

/* ==================================================================================
   CSS CUSTOM PROPERTIES - DESIGN SYSTEM
   ================================================================================== */
:root {
  /* PRIMARY COLOR PALETTE - Portfolio Theme */
  --primary-color: #8b5cf6;           /* Purple - Creative/design focused */
  --primary-dark: #7c3aed;            /* Darker purple for hover states */
  --primary-light: #a78bfa;           /* Light purple for accents */
  --secondary-color: #06b6d4;         /* Cyan - Tech/development focused */
  --accent-color: #10b981;            /* Green - Success/completion color */
  --warning-color: #f59e0b;           /* Amber - Featured/important color */
  --error-color: #ef4444;             /* Red - Error/critical color */
  
  /* NEUTRAL COLORS - Professional Dark Theme */
  --background-primary: #0f0f23;      /* Very dark blue background */
  --background-secondary: #1a1a2e;    /* Secondary dark background */
  --background-tertiary: #16213e;     /* Card backgrounds - dark blue */
  --surface-elevated: #233876;        /* Elevated surfaces */
  --text-primary: #f8fafc;            /* Primary text - near white */
  --text-secondary: #cbd5e1;          /* Secondary text - light gray */
  --text-muted: #94a3b8;              /* Muted text - medium gray */
  --border-color: #334155;            /* Border color */
  --border-light: #475569;            /* Lighter borders */
  
  /* GRADIENT DEFINITIONS */
  --gradient-primary: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  --gradient-hero-bg: linear-gradient(135deg, var(--background-primary), var(--background-secondary));
  --gradient-card: linear-gradient(135deg, rgba(139, 92, 246, 0.1), rgba(6, 182, 212, 0.1));
  
  /* SPACING SYSTEM */
  --space-xs: 0.25rem;    /* 4px */
  --space-sm: 0.5rem;     /* 8px */
  --space-md: 1rem;       /* 16px */
  --space-lg: 1.5rem;     /* 24px */
  --space-xl: 2rem;       /* 32px */
  --space-2xl: 3rem;      /* 48px */
  --space-3xl: 4rem;      /* 64px */
  
  /* TYPOGRAPHY SYSTEM */
  --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', 'Monaco', 'Menlo', monospace;
  --font-size-xs: 0.75rem;    /* 12px */
  --font-size-sm: 0.875rem;   /* 14px */
  --font-size-md: 1rem;       /* 16px */
  --font-size-lg: 1.125rem;   /* 18px */
  --font-size-xl: 1.25rem;    /* 20px */
  --font-size-2xl: 1.5rem;    /* 24px */
  --font-size-3xl: 2rem;      /* 32px */
  --font-size-4xl: 2.5rem;    /* 40px */
  
  /* ANIMATION SYSTEM */
  --transition-fast: 0.15s ease-out;
  --transition-normal: 0.3s ease-out;
  --transition-slow: 0.5s ease-out;
  --easing-bounce: cubic-bezier(0.68, -0.55, 0.265, 1.55);
  
  /* SHADOW SYSTEM */
  --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.1);
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.2);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.2);
  --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.2);
  --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.3);
  --shadow-glow: 0 0 20px rgba(139, 92, 246, 0.3);
  
  /* LAYOUT SYSTEM */
  --container-max-width: 1200px;
  --navbar-height: 80px;
  --border-radius-sm: 8px;
  --border-radius-md: 12px;
  --border-radius-lg: 16px;
  --border-radius-xl: 24px;
}

/* ==================================================================================
   GLOBAL RESET & BASE STYLES
   ================================================================================== */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

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

body {
  font-family: var(--font-primary);
  background: var(--background-primary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

::-webkit-scrollbar {
  width: 12px;
  height: 12px;
}

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

::-webkit-scrollbar-thumb {
  background: var(--primary-color);
  border-radius: 6px;
  border: 2px solid var(--background-secondary);
}

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

/* ==================================================================================
   NAVIGATION BAR - Enhanced with filter dropdown
   ================================================================================== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--navbar-height);
  background: rgba(15, 15, 35, 0.9);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-color);
  z-index: 1000;
  transition: all var(--transition-normal);
}

.nav-container {
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 var(--space-xl);
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--text-primary);
  text-decoration: none;
}

.nav-brand i {
  color: var(--primary-color);
  font-size: var(--font-size-2xl);
}

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

.nav-link {
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: 500;
  font-size: var(--font-size-md);
  position: relative;
  padding: var(--space-sm) 0;
  transition: color var(--transition-normal);
}

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

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

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

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

/* Filter Dropdown */
.filter-dropdown {
  position: relative;
}

.filter-btn {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-md);
  background: var(--background-tertiary);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-md);
  color: var(--text-secondary);
  font-size: var(--font-size-sm);
  cursor: pointer;
  transition: all var(--transition-normal);
}

.filter-btn:hover {
  background: var(--surface-elevated);
  border-color: var(--border-light);
}

.filter-menu {
  position: absolute;
  top: 100%;
  right: 0;
  min-width: 200px;
  background: var(--background-tertiary);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-md);
  box-shadow: var(--shadow-lg);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px);
  transition: all var(--transition-normal);
  margin-top: var(--space-sm);
  z-index: 100;
}

.filter-dropdown.active .filter-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.filter-option {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-md);
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--transition-fast);
  font-size: var(--font-size-sm);
}

.filter-option:hover {
  background: var(--surface-elevated);
  color: var(--text-primary);
}

.filter-option.active {
  background: rgba(139, 92, 246, 0.1);
  color: var(--primary-color);
}

.filter-option i {
  width: 16px;
  text-align: center;
}

/* ==================================================================================
   BUTTON SYSTEM - Enhanced for portfolio actions
   ================================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: var(--space-md) var(--space-xl);
  border: 2px solid transparent;
  border-radius: var(--border-radius-md);
  font-family: var(--font-primary);
  font-size: var(--font-size-md);
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
  white-space: nowrap;
}

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

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 30px rgba(139, 92, 246, 0.5);
}

.btn-secondary {
  background: var(--background-tertiary);
  color: var(--text-primary);
  border-color: var(--border-light);
}

.btn-secondary:hover {
  background: var(--surface-elevated);
  transform: translateY(-1px);
}

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

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

.btn-small {
  padding: var(--space-sm) var(--space-md);
  font-size: var(--font-size-sm);
}

.btn-large {
  padding: var(--space-lg) var(--space-2xl);
  font-size: var(--font-size-lg);
}

/* ==================================================================================
   HERO SECTION - Portfolio overview
   ================================================================================== */
.hero-section {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  padding-top: var(--navbar-height);
  overflow: hidden;
}

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

.floating-icons {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  overflow: hidden;
}

.floating-icon {
  position: absolute;
  color: var(--primary-color);
  opacity: 0.1;
  font-size: var(--font-size-2xl);
  animation: floatIcon 20s linear infinite;
}

.floating-icon:nth-child(1) { top: 10%; left: 10%; animation-delay: 0s; }
.floating-icon:nth-child(2) { top: 20%; left: 80%; animation-delay: 2s; }
.floating-icon:nth-child(3) { top: 60%; left: 15%; animation-delay: 4s; }
.floating-icon:nth-child(4) { top: 80%; left: 70%; animation-delay: 6s; }
.floating-icon:nth-child(5) { top: 30%; left: 50%; animation-delay: 8s; }
.floating-icon:nth-child(6) { top: 70%; left: 30%; animation-delay: 10s; }
.floating-icon:nth-child(7) { top: 40%; left: 85%; animation-delay: 12s; }
.floating-icon:nth-child(8) { top: 90%; left: 20%; animation-delay: 14s; }

@keyframes floatIcon {
  0% { transform: translateY(0) rotate(0deg); opacity: 0.1; }
  50% { opacity: 0.3; }
  100% { transform: translateY(-30px) rotate(360deg); opacity: 0.1; }
}

.container {
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 var(--space-xl);
  position: relative;
  z-index: 1;
}

.hero-content {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: var(--space-3xl);
  align-items: center;
}

.portfolio-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-lg);
  background: rgba(139, 92, 246, 0.1);
  border: 1px solid rgba(139, 92, 246, 0.3);
  border-radius: var(--border-radius-xl);
  color: var(--primary-color);
  font-size: var(--font-size-sm);
  font-weight: 600;
  margin-bottom: var(--space-xl);
  animation: glow 2s ease-in-out infinite alternate;
}

@keyframes glow {
  0% { box-shadow: 0 0 5px rgba(139, 92, 246, 0.3); }
  100% { box-shadow: 0 0 20px rgba(139, 92, 246, 0.6); }
}

.hero-title {
  font-size: var(--font-size-4xl);
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: var(--space-lg);
}

.gradient-text {
  background: var(--gradient-primary);
  background-clip: text;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: gradientShift 3s ease-in-out infinite alternate;
}

@keyframes gradientShift {
  0% { filter: hue-rotate(0deg); }
  100% { filter: hue-rotate(20deg); }
}

.highlight-text {
  color: var(--secondary-color);
  text-shadow: 0 0 10px rgba(6, 182, 212, 0.3);
}

.hero-subtitle {
  font-size: var(--font-size-lg);
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: var(--space-2xl);
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-lg);
  margin-bottom: var(--space-2xl);
}

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

.stat-number {
  display: block;
  font-size: var(--font-size-2xl);
  font-weight: 800;
  color: var(--primary-color);
  margin-bottom: var(--space-xs);
  font-family: var(--font-mono);
}

.stat-unit {
  font-size: var(--font-size-md);
  color: var(--text-muted);
}

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

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

/* Featured Preview Sidebar */
.featured-preview {
  background: rgba(22, 33, 62, 0.8);
  backdrop-filter: blur(10px);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-lg);
  padding: var(--space-xl);
  position: sticky;
  top: calc(var(--navbar-height) + var(--space-xl));
}

.preview-header {
  display: flex;
  align-items: center;
  margin-bottom: var(--space-lg);
}

.preview-header h3 {
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--text-primary);
}

.preview-header i {
  color: var(--warning-color);
  margin-right: var(--space-sm);
}

.preview-card {
  position: relative;
  border-radius: var(--border-radius-md);
  overflow: hidden;
  margin-bottom: var(--space-lg);
}

.preview-image {
  position: relative;
  height: 200px;
  background: var(--background-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-md);
  overflow: hidden;
}

.preview-image iframe {
  width: 100%;
  height: 100%;
  border: none;
  transform: scale(0.5);
  transform-origin: top left;
  width: 200%;
  height: 200%;
}

.preview-overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  background: linear-gradient(transparent, rgba(0, 0, 0, 0.8));
  padding: var(--space-lg);
  color: white;
}

.preview-info h4 {
  font-size: var(--font-size-md);
  font-weight: 600;
  margin-bottom: var(--space-xs);
}

.preview-info p {
  font-size: var(--font-size-sm);
  opacity: 0.9;
  margin-bottom: var(--space-sm);
}

.preview-tags {
  display: flex;
  gap: var(--space-xs);
}

.tag {
  padding: var(--space-xs) var(--space-sm);
  background: rgba(139, 92, 246, 0.2);
  border-radius: var(--border-radius-sm);
  font-size: var(--font-size-xs);
  font-weight: 500;
}

.tag.ai {
  background: rgba(239, 68, 68, 0.2);
  color: var(--error-color);
}

.tag.web {
  background: rgba(6, 182, 212, 0.2);
  color: var(--secondary-color);
}

.preview-actions {
  text-align: center;
}

/* ==================================================================================
   SECTION COMMON STYLES
   ================================================================================== */
section {
  padding: var(--space-3xl) 0;
}

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

.section-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-lg);
  background: rgba(139, 92, 246, 0.1);
  border: 1px solid rgba(139, 92, 246, 0.3);
  border-radius: var(--border-radius-xl);
  color: var(--primary-color);
  font-size: var(--font-size-sm);
  font-weight: 600;
  margin-bottom: var(--space-lg);
}

.section-title {
  font-size: var(--font-size-3xl);
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: var(--space-md);
}

.section-subtitle {
  font-size: var(--font-size-lg);
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
  line-height: 1.6;
}

/* ==================================================================================
   PROJECT GRIDS AND CARDS - Main showcase elements
   ================================================================================== */
.featured-section {
  background: var(--background-secondary);
}

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

.project-card {
  background: var(--background-tertiary);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  transition: all var(--transition-normal);
  position: relative;
  height: fit-content;
}

.project-card.featured {
  border-color: var(--warning-color);
  box-shadow: 0 0 20px rgba(245, 158, 11, 0.2);
}

.project-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-xl);
  border-color: var(--primary-light);
}

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

.project-image iframe {
  width: 100%;
  height: 100%;
  border: none;
  transform: scale(0.5);
  transform-origin: top left;
  width: 200%;
  height: 200%;
  pointer-events: none;
}

.project-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(transparent, rgba(0, 0, 0, 0.7));
  display: flex;
  align-items: flex-end;
  padding: var(--space-lg);
  opacity: 0;
  transition: opacity var(--transition-normal);
}

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

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

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

.project-title {
  flex: 1;
}

.project-title h3 {
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: var(--space-xs);
}

.project-category {
  font-size: var(--font-size-sm);
  color: var(--text-muted);
  font-weight: 500;
}

.project-status {
  padding: var(--space-xs) var(--space-sm);
  border-radius: var(--border-radius-sm);
  font-size: var(--font-size-xs);
  font-weight: 600;
}

.project-status.live {
  background: rgba(16, 185, 129, 0.2);
  color: var(--accent-color);
}

.project-status.featured {
  background: rgba(245, 158, 11, 0.2);
  color: var(--warning-color);
}

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

.project-tech {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
  margin-bottom: var(--space-lg);
}

.tech-tag {
  padding: var(--space-xs) var(--space-sm);
  background: var(--surface-elevated);
  border-radius: var(--border-radius-sm);
  font-size: var(--font-size-xs);
  color: var(--text-secondary);
  font-weight: 500;
}

.project-actions {
  display: flex;
  gap: var(--space-sm);
}

/* ==================================================================================
   PROJECT CONTROLS - Search and filtering
   ================================================================================== */
.project-controls {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-2xl);
  gap: var(--space-lg);
}

.search-box {
  position: relative;
  flex: 1;
  max-width: 400px;
}

.search-box i {
  position: absolute;
  left: var(--space-md);
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
}

.search-box input {
  width: 100%;
  padding: var(--space-md) var(--space-md) var(--space-md) var(--space-3xl);
  background: var(--background-tertiary);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-md);
  color: var(--text-primary);
  font-size: var(--font-size-md);
  transition: all var(--transition-normal);
}

.search-box input:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(139, 92, 246, 0.1);
}

.clear-search {
  position: absolute;
  right: var(--space-md);
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: var(--space-xs);
  opacity: 0;
  transition: opacity var(--transition-normal);
}

.search-box:hover .clear-search,
.search-box input:not(:placeholder-shown) + .clear-search {
  opacity: 1;
}

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

.sort-select {
  padding: var(--space-sm) var(--space-md);
  background: var(--background-tertiary);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-md);
  color: var(--text-primary);
  cursor: pointer;
}

.view-toggle {
  padding: var(--space-sm);
  background: var(--background-tertiary);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-md);
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--transition-normal);
}

.view-toggle:hover {
  color: var(--primary-color);
  border-color: var(--primary-color);
}

/* Loading States */
.loading-placeholder {
  grid-column: 1 / -1;
  text-align: center;
  padding: var(--space-3xl);
  color: var(--text-muted);
}

.loading-spinner {
  width: 40px;
  height: 40px;
  border: 3px solid var(--border-color);
  border-top: 3px solid var(--primary-color);
  border-radius: 50%;
  animation: spin 1s linear infinite;
  margin: 0 auto var(--space-lg);
}

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

/* ==================================================================================
   MODAL SYSTEM - Detailed project views
   ================================================================================== */
.project-modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.8);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-normal);
  z-index: 2000;
  padding: var(--space-lg);
}

.project-modal.active {
  opacity: 1;
  visibility: visible;
}

.modal-backdrop {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  cursor: pointer;
}

.modal-container {
  position: relative;
  width: 100%;
  max-width: 1000px;
  max-height: 90vh;
  background: var(--background-tertiary);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-xl);
  overflow: hidden;
  transform: scale(0.9);
  transition: transform var(--transition-normal);
}

.project-modal.active .modal-container {
  transform: scale(1);
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-xl);
  border-bottom: 1px solid var(--border-color);
}

.modal-title h2 {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: var(--space-sm);
}

.modal-badges {
  display: flex;
  gap: var(--space-xs);
}

.modal-close {
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: var(--font-size-xl);
  cursor: pointer;
  padding: var(--space-sm);
  border-radius: var(--border-radius-sm);
  transition: all var(--transition-normal);
}

.modal-close:hover {
  color: var(--text-primary);
  background: var(--surface-elevated);
}

.modal-content {
  max-height: calc(90vh - 200px);
  overflow-y: auto;
}

.modal-main {
  padding: var(--space-xl);
}

.modal-preview {
  position: relative;
  height: 400px;
  background: var(--background-secondary);
  border-radius: var(--border-radius-md);
  overflow: hidden;
  margin-bottom: var(--space-xl);
}

.modal-preview iframe {
  width: 100%;
  height: 100%;
  border: none;
}

.modal-details {
  display: grid;
  gap: var(--space-xl);
}

.detail-section h3 {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--space-md);
}

.detail-section h3 i {
  color: var(--primary-color);
}

.tech-stack {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

.feature-list {
  list-style: none;
  padding: 0;
}

.feature-list li {
  display: flex;
  align-items: flex-start;
  gap: var(--space-sm);
  margin-bottom: var(--space-sm);
  color: var(--text-secondary);
}

.feature-list li::before {
  content: '✓';
  color: var(--accent-color);
  font-weight: bold;
  flex-shrink: 0;
}

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

.modal-actions {
  display: flex;
  justify-content: center;
  gap: var(--space-md);
  padding: var(--space-xl);
  border-top: 1px solid var(--border-color);
}

/* ==================================================================================
   RESPONSIVE DESIGN
   ================================================================================== */
@media (max-width: 1024px) {
  .hero-content {
    grid-template-columns: 1fr;
    gap: var(--space-2xl);
    text-align: center;
  }
  
  .hero-stats {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .project-controls {
    flex-direction: column;
    align-items: stretch;
  }
  
  .search-box {
    max-width: none;
  }
}

@media (max-width: 768px) {
  .container {
    padding: 0 var(--space-md);
  }
  
  .nav-container {
    padding: 0 var(--space-md);
  }
  
  .nav-menu {
    display: none;
  }
  
  .hero-stats {
    grid-template-columns: 1fr;
    gap: var(--space-md);
  }
  
  .featured-grid,
  .projects-grid {
    grid-template-columns: 1fr;
  }
  
  .modal-container {
    margin: var(--space-md);
    max-height: calc(100vh - 2rem);
  }
  
  .modal-preview {
    height: 250px;
  }
}

@media (max-width: 480px) {
  .hero-actions {
    flex-direction: column;
    width: 100%;
  }
  
  .btn {
    width: 100%;
  }
  
  .project-actions {
    flex-direction: column;
  }
  
  .project-tech {
    justify-content: center;
  }
}