/* ============================================
   MODERN DESIGN ENHANCEMENTS
   Tony Abdelmalak Portfolio - 2026
   ============================================ */

/* Enhanced Color Variables with Modern Palette */
:root {
  /* Primary Colors - Enhanced with depth */
  --primary-color: #1E3A8A;
  --primary-dark: #1e40af;
  --primary-light: #3b82f6;
  
  /* Accent Colors - More vibrant */
  --accent-color: #14B8A6;
  --accent-hover: #0d9488;
  --accent-light: #5eead4;
  
  /* Neutral Colors */
  --background-color: #F9FAFB;
  --surface-color: #FFFFFF;
  --text-color: #111827;
  --subtext-color: #6B7280;
  
  /* Gradient Colors */
  --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  --gradient-accent: linear-gradient(135deg, #14B8A6 0%, #0891b2 100%);
  --gradient-hero: linear-gradient(135deg, rgba(30, 58, 138, 0.95) 0%, rgba(20, 184, 166, 0.85) 100%);
  
  /* Shadows - Modern depth */
  --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);
  
  /* Animation Timings */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 300ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 500ms cubic-bezier(0.4, 0, 0.2, 1);
}

/* Enhanced Typography */
body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  letter-spacing: -0.025em;
  line-height: 1.2;
}

/* Enhanced Navbar with Glassmorphism */
.navbar {
  background: rgba(30, 58, 138, 0.95) !important;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  transition: all var(--transition-base);
}

.navbar.scrolled {
  box-shadow: var(--shadow-lg);
  background: rgba(30, 58, 138, 0.98) !important;
}

.navbar-nav .nav-link {
  position: relative;
  transition: all var(--transition-fast);
}

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

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

/* Enhanced Hero Section */
#hero {
  position: relative;
  overflow: hidden;
}

#hero::before {
  background: var(--gradient-hero) !important;
  animation: gradientShift 15s ease infinite;
}

@keyframes gradientShift {
  0%, 100% { opacity: 0.9; }
  50% { opacity: 0.95; }
}

#hero h1 {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 800;
  text-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
  margin-bottom: 1.5rem;
}

#hero .lead {
  font-size: clamp(1.1rem, 2.5vw, 1.5rem);
  font-weight: 400;
  opacity: 0.95;
  text-shadow: 0 1px 5px rgba(0, 0, 0, 0.2);
}

/* Enhanced Buttons */
.btn-cta {
  position: relative;
  overflow: hidden;
  font-weight: 600;
  padding: 0.875rem 2rem;
  border-radius: 0.5rem;
  transition: all var(--transition-base);
  box-shadow: 0 4px 14px 0 rgba(20, 184, 166, 0.39);
}

.btn-cta::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-slow);
}

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

.btn-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px 0 rgba(20, 184, 166, 0.5);
}

/* Enhanced Results Cards with Glassmorphism */
.results-card {
  background: rgba(255, 255, 255, 0.9) !important;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 1rem !important;
  box-shadow: var(--shadow-lg) !important;
  transition: all var(--transition-base) !important;
}

.results-card:hover {
  transform: translateY(-8px) scale(1.02) !important;
  box-shadow: var(--shadow-xl) !important;
  border-color: var(--accent-color);
}

.results-icon {
  background: var(--gradient-accent);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  filter: drop-shadow(0 2px 4px rgba(20, 184, 166, 0.3));
}

.results-number {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  font-weight: 800 !important;
}

/* Enhanced Metric Numbers with Animation */
.metric-number {
  background: linear-gradient(135deg, #0ea5e9, #22d3ee, #06b6d4) !important;
  -webkit-background-clip: text !important;
  -webkit-text-fill-color: transparent !important;
  background-clip: text !important;
  background-size: 200% 200%;
  animation: gradientFlow 3s ease infinite;
  font-weight: 800 !important;
  filter: drop-shadow(0 2px 8px rgba(14, 165, 233, 0.4));
}

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

/* Enhanced Project Cards */
.project-card,
.carousel-card {
  background: var(--surface-color) !important;
  border-radius: 1rem !important;
  overflow: hidden;
  box-shadow: var(--shadow-md) !important;
  transition: all var(--transition-base) !important;
  border: 1px solid rgba(30, 58, 138, 0.1) !important;
}

.project-card:hover,
.carousel-card:hover {
  transform: translateY(-8px) !important;
  box-shadow: var(--shadow-xl) !important;
  border-color: var(--accent-color) !important;
}

.project-card img {
  transition: transform var(--transition-slow);
}

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

/* Enhanced Skills Grid */
.skill-item {
  padding: 1.5rem;
  background: var(--surface-color);
  border-radius: 0.75rem;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-base);
  border: 1px solid rgba(30, 58, 138, 0.1);
}

.skill-item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--accent-color);
}

.skill-icon {
  transition: all var(--transition-base);
}

.skill-item:hover .skill-icon {
  transform: scale(1.1);
  color: var(--accent-color) !important;
}

/* Enhanced Chat Widget */
#hf-chat-toggle {
  box-shadow: var(--shadow-lg) !important;
  border: 3px solid var(--accent-color) !important;
  transition: all var(--transition-base);
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(20, 184, 166, 0.7); }
  50% { box-shadow: 0 0 0 10px rgba(20, 184, 166, 0); }
}

#hf-chat-toggle:hover {
  transform: scale(1.1);
  border-color: var(--primary-color) !important;
}

#hf-chat-container {
  background: rgba(255, 255, 255, 0.98) !important;
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: var(--shadow-xl) !important;
  border: 1px solid rgba(30, 58, 138, 0.1) !important;
  border-radius: 1rem !important;
}

/* Smooth Scroll Behavior */
html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
}

/* Section Fade-In Animation */
section {
  animation: fadeInUp 0.6s ease-out;
  padding: 40px 0 !important; /* Reduced padding for less scrolling */
}

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

/* Enhanced Carousel Arrows */
.carousel-arrow {
  background: var(--surface-color) !important;
  border: 2px solid var(--primary-color) !important;
  border-radius: 50%;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-md);
  transition: all var(--transition-base);
}

.carousel-arrow:hover {
  background: var(--primary-color) !important;
  color: white !important;
  transform: scale(1.1);
  box-shadow: var(--shadow-lg);
}

/* Loading Animation for Images */
img {
  transition: opacity var(--transition-base);
}

img[loading="lazy"] {
  opacity: 0;
}

img[loading="lazy"].loaded {
  opacity: 1;
}

/* Enhanced Footer */
footer {
  background: linear-gradient(135deg, #1E3A8A 0%, #1e40af 100%) !important;
  position: relative;
  overflow: hidden;
}

footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(20, 184, 166, 0.5), transparent);
}

/* Responsive Enhancements */
@media (max-width: 768px) {
  #hero {
    padding: 120px 20px !important;
  }
  
  #hero h1 {
    font-size: 2rem !important;
  }
  
  .metric-number {
    font-size: 40px !important;
  }
  
  .carousel-card {
    flex: 0 0 260px !important;
  }
}

/* Performance: Reduce Motion for Accessibility */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* Print Styles */
@media print {
  .navbar,
  #hf-chat-wrapper,
  #hf-chat-container,
  .carousel-arrow {
    display: none !important;
  }
}