/* AI Portfolio - Professional Modern Design */
/* Author: Dr. Youssef Mohamed */
/* Flat Colors + Interactive Elements */

@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@300;400;500;600;700&family=Inter:wght@300;400;500;600;700&display=swap');

:root {
  /* Flat Color Palette */
  --primary-dark: #0a0a0f;
  --secondary-dark: #12121a;
  --tertiary-dark: #1a1a24;
  --surface: #22222e;
  --surface-elevated: #2a2a38;

  /* Accent Colors - Flat */
  --accent-primary: #6366f1;
  --accent-secondary: #818cf8;
  --accent-tertiary: #a5b4fc;
  --accent-cyan: #22d3ee;
  --accent-emerald: #34d399;
  --accent-amber: #fbbf24;
  --accent-rose: #fb7185;

  /* Text Colors */
  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-tertiary: #64748b;

  /* Border & Surface */
  --border-subtle: rgba(99, 102, 241, 0.15);
  --border-hover: rgba(99, 102, 241, 0.4);
  --glow-color: rgba(99, 102, 241, 0.5);

  /* Typography */
  --font-heading: 'Space Grotesk', sans-serif;
  --font-body: 'Inter', sans-serif;

  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --spacing-2xl: 4rem;
  --spacing-3xl: 6rem;

  /* Border Radius */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;

  /* Transitions */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 250ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 400ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-bounce: 500ms cubic-bezier(0.34, 1.56, 0.64, 1);
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 2rem;
}

body.portfolio-page {
  font-family: var(--font-body);
  background-color: var(--primary-dark);
  color: var(--text-primary);
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Selection styling */
::selection {
  background: var(--accent-primary);
  color: white;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
  width: 10px;
}

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

::-webkit-scrollbar-thumb {
  background: var(--surface-elevated);
  border-radius: var(--radius-full);
  border: 2px solid var(--primary-dark);
}

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

/* ==================== HERO SECTION ==================== */
.portfolio-hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: var(--spacing-2xl) var(--spacing-md);
  position: relative;
  overflow: hidden;
  background-color: var(--primary-dark);
}

/* Animated background grid */
.portfolio-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(99, 102, 241, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(99, 102, 241, 0.03) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 80% 50% at 50% 50%, black 40%, transparent 100%);
  -webkit-mask-image: radial-gradient(ellipse 80% 50% at 50% 50%, black 40%, transparent 100%);
}

/* Floating orbs */
.portfolio-hero::after {
  content: '';
  position: absolute;
  width: 600px;
  height: 600px;
  top: -200px;
  right: -200px;
  background: var(--accent-primary);
  opacity: 0.03;
  border-radius: 50%;
  filter: blur(100px);
  animation: float 20s ease-in-out infinite;
}

@keyframes float {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33% { transform: translate(-50px, 50px) scale(1.1); }
  66% { transform: translate(50px, -30px) scale(0.9); }
}

.hero-content {
  max-width: 900px;
  z-index: 10;
  position: relative;
}

/* Animated tag */
.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-xs) var(--spacing-md);
  background-color: var(--surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-full);
  color: var(--accent-secondary);
  font-size: 0.875rem;
  font-weight: 500;
  margin-bottom: var(--spacing-lg);
  text-transform: uppercase;
  letter-spacing: 2px;
  position: relative;
  overflow: hidden;
  transition: var(--transition-base);
}

.hero-tag::before {
  content: '';
  position: absolute;
  inset: 0;
  background-color: var(--accent-primary);
  opacity: 0;
  transition: var(--transition-base);
}

.hero-tag:hover {
  border-color: var(--accent-primary);
  transform: translateY(-2px);
}

.hero-tag:hover::before {
  opacity: 0.1;
}

/* Title with animated underline */
.hero-title {
  font-family: var(--font-heading);
  font-size: clamp(2.5rem, 8vw, 4.5rem);
  font-weight: 700;
  margin-bottom: var(--spacing-sm);
  color: var(--text-primary);
  line-height: 1.1;
  position: relative;
  display: inline-block;
}

.hero-title::after {
  content: '';
  position: absolute;
  bottom: -8px;
  left: 50%;
  transform: translateX(-50%);
  width: 120px;
  height: 4px;
  background-color: var(--accent-primary);
  border-radius: var(--radius-full);
  transition: var(--transition-slow);
}

.hero-title:hover::after {
  width: 200px;
}

.hero-subtitle {
  font-size: clamp(1.25rem, 3vw, 1.5rem);
  color: var(--accent-secondary);
  margin-bottom: var(--spacing-lg);
  font-weight: 500;
  letter-spacing: 0.5px;
}

.hero-description {
  font-size: 1.125rem;
  color: var(--text-secondary);
  max-width: 700px;
  margin: 0 auto var(--spacing-xl);
  line-height: 1.8;
}

/* Contact items with hover effects */
.hero-contact {
  display: flex;
  gap: var(--spacing-sm);
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: var(--spacing-xl);
}

.contact-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-xs) var(--spacing-md);
  background-color: var(--surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-full);
  color: var(--text-secondary);
  font-size: 0.9rem;
  transition: var(--transition-base);
  cursor: pointer;
}

.contact-item:hover {
  background-color: var(--surface-elevated);
  border-color: var(--accent-primary);
  color: var(--text-primary);
  transform: translateY(-3px);
  box-shadow: 0 10px 30px rgba(99, 102, 241, 0.15);
}

.contact-item ion-icon {
  font-size: 1.1rem;
  color: var(--accent-primary);
  transition: var(--transition-fast);
}

.contact-item:hover ion-icon {
  color: var(--accent-secondary);
  transform: scale(1.1);
}

/* Scroll indicator */
.scroll-indicator {
  margin-top: var(--spacing-2xl);
  animation: bounce 2s ease-in-out infinite;
}

.scroll-indicator ion-icon {
  font-size: 2rem;
  color: var(--accent-primary);
  opacity: 0.7;
  transition: var(--transition-base);
}

.scroll-indicator:hover ion-icon {
  opacity: 1;
  color: var(--accent-secondary);
}

@keyframes bounce {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(12px); }
}

/* ==================== PORTFOLIO SECTION ==================== */
.portfolio-section {
  padding: var(--spacing-3xl) var(--spacing-md);
  max-width: 1400px;
  margin: 0 auto;
  position: relative;
}

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

.section-tag {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-xs) var(--spacing-md);
  background-color: var(--surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-full);
  color: var(--accent-secondary);
  font-size: 0.8rem;
  font-weight: 600;
  margin-bottom: var(--spacing-md);
  text-transform: uppercase;
  letter-spacing: 2px;
  transition: var(--transition-base);
}

.section-tag:hover {
  border-color: var(--accent-primary);
  background-color: var(--surface-elevated);
}

.section-title {
  font-family: var(--font-heading);
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 700;
  margin-bottom: var(--spacing-md);
  color: var(--text-primary);
}

.section-description {
  font-size: 1.125rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
  line-height: 1.8;
}

/* ==================== PROJECT CARDS ==================== */
.projects-grid {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-2xl);
}

.project-card {
  background-color: var(--secondary-dark);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  padding: var(--spacing-xl);
  position: relative;
  overflow: hidden;
  transition: var(--transition-slow);
}

/* Card accent line */
.project-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background-color: var(--accent-primary);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition-slow);
}

/* Card glow effect */
.project-card::after {
  content: '';
  position: absolute;
  inset: 0;
  background-color: var(--accent-primary);
  opacity: 0;
  transition: var(--transition-base);
  pointer-events: none;
}

.project-card:hover {
  border-color: var(--border-hover);
  transform: translateY(-8px);
  box-shadow:
    0 25px 50px -12px rgba(0, 0, 0, 0.5),
    0 0 0 1px var(--border-hover);
}

.project-card:hover::before {
  transform: scaleX(1);
}

.project-card:hover::after {
  opacity: 0.02;
}

/* Project header */
.project-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: var(--spacing-lg);
  gap: var(--spacing-md);
  position: relative;
  z-index: 1;
}

.project-title-group {
  flex: 1;
}

.project-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  background-color: var(--surface);
  border-radius: var(--radius-full);
  color: var(--accent-secondary);
  font-size: 0.75rem;
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
  text-transform: uppercase;
  letter-spacing: 1px;
  transition: var(--transition-base);
}

.project-tag:hover {
  background-color: var(--surface-elevated);
  color: var(--accent-tertiary);
}

.project-title {
  font-family: var(--font-heading);
  font-size: clamp(1.5rem, 4vw, 2rem);
  font-weight: 700;
  margin-bottom: var(--spacing-xs);
  color: var(--text-primary);
  transition: var(--transition-base);
}

.project-card:hover .project-title {
  color: var(--accent-secondary);
}

.project-subtitle {
  font-size: 1.1rem;
  color: var(--text-secondary);
  margin-bottom: 0;
  font-weight: 400;
}

/* Project link button */
.project-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  background-color: var(--accent-primary);
  border: none;
  border-radius: var(--radius-full);
  color: white;
  text-decoration: none;
  font-size: 0.875rem;
  font-weight: 600;
  transition: var(--transition-bounce);
  white-space: nowrap;
  position: relative;
  overflow: hidden;
}

.project-link::before {
  content: '';
  position: absolute;
  inset: 0;
  background-color: white;
  opacity: 0;
  transition: var(--transition-fast);
}

.project-link:hover {
  transform: translateY(-3px) scale(1.02);
  box-shadow: 0 10px 30px rgba(99, 102, 241, 0.4);
}

.project-link:hover::before {
  opacity: 0.15;
}

.project-link ion-icon {
  font-size: 1rem;
  transition: var(--transition-base);
}

.project-link:hover ion-icon {
  transform: translateX(4px);
}

/* Project description */
.project-description {
  font-size: 1rem;
  color: var(--text-secondary);
  line-height: 1.9;
  margin-bottom: var(--spacing-lg);
  position: relative;
  z-index: 1;
}

/* ==================== TECH STACK ==================== */
.tech-stack {
  margin-bottom: var(--spacing-lg);
  position: relative;
  z-index: 1;
}

.tech-stack-title {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--text-tertiary);
  text-transform: uppercase;
  letter-spacing: 2px;
  margin-bottom: var(--spacing-sm);
}

.tech-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.tech-tag {
  padding: 8px 14px;
  background-color: var(--surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-size: 0.8rem;
  font-weight: 500;
  transition: var(--transition-base);
  cursor: default;
}

.tech-tag:hover {
  background-color: var(--accent-primary);
  border-color: var(--accent-primary);
  color: white;
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(99, 102, 241, 0.3);
}

/* ==================== KEY FEATURES ==================== */
.key-features {
  margin-bottom: var(--spacing-lg);
  position: relative;
  z-index: 1;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: var(--spacing-sm);
  margin-top: var(--spacing-sm);
}

.feature-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-md);
  background-color: var(--surface);
  border: 1px solid transparent;
  border-radius: var(--radius-md);
  transition: var(--transition-base);
  cursor: default;
}

.feature-item:hover {
  background-color: var(--surface-elevated);
  border-color: var(--border-hover);
  transform: translateX(8px);
}

.feature-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background-color: var(--accent-primary);
  border-radius: var(--radius-sm);
  color: white;
  font-size: 1.25rem;
  flex-shrink: 0;
  transition: var(--transition-base);
}

.feature-item:hover .feature-icon {
  transform: scale(1.1) rotate(5deg);
}

.feature-text {
  font-size: 0.95rem;
  color: var(--text-primary);
  font-weight: 500;
}

/* ==================== METRICS ==================== */
.project-metrics {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-lg);
  position: relative;
  z-index: 1;
}

.metric {
  text-align: center;
  padding: var(--spacing-lg) var(--spacing-md);
  background-color: var(--surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  transition: var(--transition-bounce);
  cursor: default;
  position: relative;
  overflow: hidden;
}

.metric::before {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background-color: var(--accent-primary);
  transform: scaleX(0);
  transition: var(--transition-base);
}

.metric:hover {
  border-color: var(--accent-primary);
  transform: translateY(-5px);
  box-shadow: 0 15px 40px rgba(99, 102, 241, 0.15);
}

.metric:hover::before {
  transform: scaleX(1);
}

.metric-value {
  font-family: var(--font-heading);
  font-size: 2rem;
  font-weight: 700;
  color: var(--accent-secondary);
  margin-bottom: 4px;
  transition: var(--transition-base);
}

.metric:hover .metric-value {
  color: var(--accent-tertiary);
  transform: scale(1.05);
}

.metric-label {
  font-size: 0.8rem;
  color: var(--text-tertiary);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 1px;
}

/* ==================== SCREENSHOTS ==================== */
.project-screenshots {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-md);
  margin-top: var(--spacing-lg);
  position: relative;
  z-index: 1;
}

.screenshot-container {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  aspect-ratio: 16 / 9;
  background-color: var(--surface);
  border: 1px solid var(--border-subtle);
  transition: var(--transition-slow);
  cursor: pointer;
}

.screenshot-container::before {
  content: '';
  position: absolute;
  inset: 0;
  background-color: var(--accent-primary);
  opacity: 0;
  transition: var(--transition-base);
  z-index: 1;
}

.screenshot-container:hover {
  border-color: var(--accent-primary);
  transform: scale(1.02);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.4);
}

.screenshot-container:hover::before {
  opacity: 0.1;
}

.screenshot-container img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition-slow);
}

.screenshot-container:hover img {
  transform: scale(1.08);
}

.screenshot-label {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: var(--spacing-md) var(--spacing-sm);
  background-color: rgba(10, 10, 15, 0.9);
  color: var(--text-primary);
  font-size: 0.875rem;
  font-weight: 500;
  text-align: center;
  z-index: 2;
  transform: translateY(100%);
  transition: var(--transition-base);
}

.screenshot-container:hover .screenshot-label {
  transform: translateY(0);
}

/* ==================== CTA BUTTONS ==================== */
.cta-button {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 28px;
  background-color: var(--accent-primary);
  border: none;
  border-radius: var(--radius-full);
  color: white;
  text-decoration: none;
  font-weight: 600;
  font-size: 1rem;
  transition: var(--transition-bounce);
  position: relative;
  overflow: hidden;
}

.cta-button::before {
  content: '';
  position: absolute;
  inset: 0;
  background-color: white;
  opacity: 0;
  transition: var(--transition-fast);
}

.cta-button:hover {
  transform: translateY(-3px) scale(1.02);
  box-shadow: 0 15px 40px rgba(99, 102, 241, 0.4);
}

.cta-button:hover::before {
  opacity: 0.15;
}

.cta-button-secondary {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 28px;
  background-color: transparent;
  border: 2px solid var(--accent-primary);
  border-radius: var(--radius-full);
  color: var(--accent-secondary);
  text-decoration: none;
  font-weight: 600;
  font-size: 1rem;
  transition: var(--transition-bounce);
}

.cta-button-secondary:hover {
  background-color: var(--accent-primary);
  color: white;
  transform: translateY(-3px);
  box-shadow: 0 15px 40px rgba(99, 102, 241, 0.3);
}

/* ==================== FOOTER ==================== */
.portfolio-footer {
  text-align: center;
  padding: var(--spacing-2xl) var(--spacing-md);
  border-top: 1px solid var(--border-subtle);
  margin-top: var(--spacing-3xl);
  background-color: var(--secondary-dark);
}

.portfolio-footer p {
  color: var(--text-tertiary);
  font-size: 0.9rem;
}

.portfolio-footer p:first-child {
  color: var(--text-secondary);
  margin-bottom: var(--spacing-xs);
}

/* ==================== ANIMATIONS ==================== */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(40px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

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

@keyframes pulse-glow {
  0%, 100% { box-shadow: 0 0 0 0 rgba(99, 102, 241, 0.4); }
  50% { box-shadow: 0 0 0 15px rgba(99, 102, 241, 0); }
}

.animate-on-scroll {
  animation: fadeInUp 0.8s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

.stagger-1 { animation-delay: 0.1s; }
.stagger-2 { animation-delay: 0.2s; }
.stagger-3 { animation-delay: 0.3s; }
.stagger-4 { animation-delay: 0.4s; }

/* Initial state for scroll animations */
.project-card {
  opacity: 0;
  transform: translateY(40px);
}

.project-card.animate-on-scroll {
  opacity: 1;
  transform: translateY(0);
}

/* ==================== RESPONSIVE DESIGN ==================== */
@media (max-width: 1024px) {
  .portfolio-section {
    padding: var(--spacing-2xl) var(--spacing-md);
  }

  .project-card {
    padding: var(--spacing-lg);
  }
}

@media (max-width: 768px) {
  .portfolio-hero {
    min-height: auto;
    padding: var(--spacing-2xl) var(--spacing-md);
  }

  .hero-title {
    font-size: 2.5rem;
  }

  .hero-title::after {
    width: 80px;
  }

  .hero-subtitle {
    font-size: 1.125rem;
  }

  .hero-description {
    font-size: 1rem;
  }

  .project-header {
    flex-direction: column;
    gap: var(--spacing-md);
  }

  .project-link {
    align-self: flex-start;
  }

  .project-title {
    font-size: 1.5rem;
  }

  .features-grid {
    grid-template-columns: 1fr;
  }

  .project-metrics {
    grid-template-columns: repeat(2, 1fr);
  }

  .project-screenshots {
    grid-template-columns: 1fr;
  }

  .screenshot-label {
    transform: translateY(0);
    background-color: rgba(10, 10, 15, 0.8);
    padding: var(--spacing-sm);
  }

  .section-header {
    margin-bottom: var(--spacing-2xl);
  }
}

@media (max-width: 480px) {
  .hero-contact {
    flex-direction: column;
    gap: var(--spacing-sm);
    width: 100%;
  }

  .contact-item {
    width: 100%;
    justify-content: center;
  }

  .tech-tags {
    gap: 6px;
  }

  .tech-tag {
    padding: 6px 10px;
    font-size: 0.75rem;
  }

  .project-metrics {
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-sm);
  }

  .metric {
    padding: var(--spacing-md) var(--spacing-sm);
  }

  .metric-value {
    font-size: 1.5rem;
  }

  .cta-button,
  .cta-button-secondary {
    width: 100%;
    justify-content: center;
  }
}

/* ==================== UTILITY CLASSES ==================== */
.text-center { text-align: center; }
.text-accent { color: var(--accent-primary); }
.mb-sm { margin-bottom: var(--spacing-sm); }
.mb-md { margin-bottom: var(--spacing-md); }
.mb-lg { margin-bottom: var(--spacing-lg); }
.mb-xl { margin-bottom: var(--spacing-xl); }

/* Focus states for accessibility */
a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--accent-primary);
  outline-offset: 3px;
}

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

  html {
    scroll-behavior: auto;
  }
}