/* Alpha Alliance Labs - Main Stylesheet */

/* ============================================
   CSS Variables & Design Tokens
   ============================================ */
:root {
  /* Brand Colors */
  --brand-pink: #ff00ff;
  --brand-magenta: #e91e63;
  --brand-pink-light: #ff66ff;
  --brand-pink-dark: #cc00cc;
  
  /* Neutral Colors */
  --color-white: #ffffff;
  --color-graphite: #1a1a1a;
  --color-graphite-light: #2d2d2d;
  --color-graphite-medium: #3a3a3a;
  --color-gray: #6b6b6b;
  --color-gray-light: #e0e0e0;
  
  /* Typography */
  --font-primary: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --font-heading: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  
  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 2rem;
  --spacing-lg: 3rem;
  --spacing-xl: 4rem;
  --spacing-xxl: 6rem;
  
  /* Layout */
  --container-max-width: 1200px;
  --container-padding: 1.5rem;
  
  /* Effects */
  --shadow-sm: 0 2px 8px rgba(233, 30, 99, 0.1);
  --shadow-md: 0 4px 16px rgba(233, 30, 99, 0.15);
  --shadow-lg: 0 8px 32px rgba(233, 30, 99, 0.2);
  --glow-pink: 0 0 20px rgba(255, 0, 255, 0.3);
  
  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-base: 0.3s ease;
  --transition-slow: 0.5s ease;
}

/* ============================================
   Reset & Base Styles
   ============================================ */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

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

body {
  font-family: var(--font-primary);
  color: var(--color-white);
  background-color: var(--color-graphite);
  line-height: 1.6;
  overflow-x: hidden;
}

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

h1 {
  font-size: clamp(2.5rem, 5vw, 4rem);
  background: linear-gradient(135deg, var(--color-white), var(--brand-pink-light));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

h2 {
  font-size: clamp(2rem, 4vw, 3rem);
  margin-bottom: var(--spacing-md);
}

h3 {
  font-size: clamp(1.5rem, 3vw, 2rem);
  margin-bottom: var(--spacing-sm);
}

h4 {
  font-size: clamp(1.25rem, 2vw, 1.5rem);
}

p {
  margin-bottom: var(--spacing-sm);
  color: var(--color-gray-light);
}

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

a:hover {
  color: var(--brand-pink-light);
}

/* ============================================
   Container & Layout
   ============================================ */
.container {
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

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

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

.section-title h2 {
  position: relative;
  display: inline-block;
}

.section-title h2::after {
  content: '';
  position: absolute;
  bottom: -10px;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 3px;
  background: linear-gradient(90deg, transparent, var(--brand-pink), transparent);
}

/* ============================================
   Header & Navigation
   ============================================ */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background-color: rgba(26, 26, 26, 0.95);
  backdrop-filter: blur(10px);
  z-index: 1000;
  border-bottom: 1px solid rgba(255, 0, 255, 0.1);
  transition: all var(--transition-base);
}

.header.scrolled {
  box-shadow: var(--shadow-md);
}

.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-sm) var(--container-padding);
}

.logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--color-white);
}

.logo img {
  height: 40px;
  width: auto;
}

.nav-menu {
  display: flex;
  list-style: none;
  gap: var(--spacing-md);
  align-items: center;
}

.nav-menu a {
  color: var(--color-white);
  font-weight: 500;
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: 4px;
  transition: all var(--transition-fast);
  position: relative;
}

.nav-menu a:hover {
  color: var(--brand-pink);
}

.nav-menu a.active {
  color: var(--brand-pink);
}

.nav-menu a.active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: var(--spacing-sm);
  right: var(--spacing-sm);
  height: 2px;
  background: var(--brand-pink);
  box-shadow: var(--glow-pink);
}

.mobile-menu-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--color-white);
  font-size: 1.5rem;
  cursor: pointer;
  padding: var(--spacing-xs);
}

/* ============================================
   Buttons
   ============================================ */
.btn {
  display: inline-block;
  padding: var(--spacing-sm) var(--spacing-md);
  font-weight: 600;
  text-align: center;
  border-radius: 6px;
  transition: all var(--transition-base);
  cursor: pointer;
  border: none;
  font-size: 1rem;
  text-decoration: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--brand-pink), var(--brand-magenta));
  color: var(--color-white);
  box-shadow: var(--shadow-md);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg), var(--glow-pink);
  color: var(--color-white);
}

.btn-secondary {
  background: transparent;
  color: var(--color-white);
  border: 2px solid var(--brand-pink);
}

.btn-secondary:hover {
  background: var(--brand-pink);
  color: var(--color-white);
  transform: translateY(-2px);
}

.btn-large {
  padding: var(--spacing-md) var(--spacing-lg);
  font-size: 1.125rem;
}

/* ============================================
   Hero Section
   ============================================ */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding-top: 80px;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(circle at 50% 50%, rgba(255, 0, 255, 0.1), transparent 70%);
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 800px;
  animation: fadeInUp 0.8s ease;
}

.hero h1 {
  margin-bottom: var(--spacing-md);
}

.hero p {
  font-size: clamp(1.125rem, 2vw, 1.5rem);
  margin-bottom: var(--spacing-lg);
  color: var(--color-gray-light);
}

.hero-buttons {
  display: flex;
  gap: var(--spacing-md);
  justify-content: center;
  flex-wrap: wrap;
}

/* ============================================
   Grid Layouts
   ============================================ */
.grid {
  display: grid;
  gap: var(--spacing-md);
}

.grid-2 {
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.grid-3 {
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.grid-4 {
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

/* ============================================
   Cards
   ============================================ */
.card {
  background: var(--color-graphite-light);
  border-radius: 12px;
  padding: var(--spacing-md);
  transition: all var(--transition-base);
  border: 1px solid rgba(255, 0, 255, 0.1);
}

.card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
  border-color: var(--brand-pink);
}

.card-icon {
  width: 60px;
  height: 60px;
  background: linear-gradient(135deg, var(--brand-pink), var(--brand-magenta));
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--spacing-md);
  color: var(--color-white);
}

.card-icon svg {
  width: 32px;
  height: 32px;
}

.card-icon[style*="120px"] svg {
  width: 64px;
  height: 64px;
}

.card-icon[style*="100px"] svg {
  width: 56px;
  height: 56px;
}

.card h3 {
  color: var(--color-white);
  margin-bottom: var(--spacing-sm);
}

.card p {
  color: var(--color-gray-light);
}

/* ============================================
   Features Section
   ============================================ */
.features {
  background: var(--color-graphite-light);
  border-radius: 20px;
  padding: var(--spacing-md);
  margin-bottom: var(--spacing-md);
}

.feature-item {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-md);
}

.feature-item:last-child {
  margin-bottom: 0;
}

.feature-icon {
  flex-shrink: 0;
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, var(--brand-pink), var(--brand-magenta));
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-white);
}

.feature-icon svg {
  width: 24px;
  height: 24px;
}

/* ============================================
   Testimonials
   ============================================ */
.testimonial {
  background: var(--color-graphite-light);
  border-radius: 12px;
  padding: var(--spacing-md);
  border-left: 4px solid var(--brand-pink);
}

.testimonial-text {
  font-style: italic;
  margin-bottom: var(--spacing-md);
  color: var(--color-gray-light);
  font-size: 1.125rem;
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.testimonial-author strong {
  color: var(--color-white);
}

.testimonial-author span {
  color: var(--color-gray);
  font-size: 0.9rem;
}

/* ============================================
   Forms
   ============================================ */
.form-group {
  margin-bottom: var(--spacing-md);
}

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

.form-group input,
.form-group textarea {
  width: 100%;
  padding: var(--spacing-sm);
  background: var(--color-graphite-light);
  border: 1px solid rgba(255, 0, 255, 0.2);
  border-radius: 6px;
  color: var(--color-white);
  font-family: var(--font-primary);
  font-size: 1rem;
  transition: all var(--transition-fast);
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--brand-pink);
  box-shadow: 0 0 0 3px rgba(255, 0, 255, 0.1);
}

.form-group textarea {
  min-height: 150px;
  resize: vertical;
}

.form-error {
  color: #ff4444;
  font-size: 0.875rem;
  margin-top: var(--spacing-xs);
  display: none;
}

.form-group.error .form-error {
  display: block;
}

.form-group.error input,
.form-group.error textarea {
  border-color: #ff4444;
}

.form-success {
  background: rgba(0, 255, 0, 0.1);
  border: 1px solid rgba(0, 255, 0, 0.3);
  color: #00ff00;
  padding: var(--spacing-md);
  border-radius: 6px;
  margin-bottom: var(--spacing-md);
  display: none;
}

.form-success.show {
  display: block;
}

/* ============================================
   Footer
   ============================================ */
.footer {
  background: var(--color-graphite);
  border-top: 1px solid rgba(255, 0, 255, 0.1);
  padding: var(--spacing-xl) 0 var(--spacing-md);
  margin-top: var(--spacing-xxl);
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-lg);
}

.footer-section h3 {
  font-size: 1.25rem;
  margin-bottom: var(--spacing-md);
  color: var(--color-white);
}

.footer-section p {
  color: var(--color-gray-light);
  margin-bottom: var(--spacing-sm);
}

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

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

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

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

.social-links {
  display: flex;
  gap: var(--spacing-sm);
  margin-top: var(--spacing-md);
}

.social-link {
  width: 40px;
  height: 40px;
  background: var(--color-graphite-light);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-white);
  transition: all var(--transition-fast);
  border: 1px solid rgba(255, 0, 255, 0.2);
}

.social-link:hover {
  background: var(--brand-pink);
  transform: translateY(-3px);
  box-shadow: var(--glow-pink);
  color: var(--color-white);
}

.social-link svg {
  width: 20px;
  height: 20px;
  fill: currentColor;
}

.footer-bottom {
  text-align: center;
  padding-top: var(--spacing-md);
  border-top: 1px solid rgba(255, 0, 255, 0.1);
  color: var(--color-gray);
  font-size: 0.9rem;
}

/* ============================================
   Pricing Tables
   ============================================ */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-md);
  margin-top: var(--spacing-lg);
}

.pricing-card {
  background: var(--color-graphite-light);
  border-radius: 12px;
  padding: var(--spacing-lg);
  border: 2px solid rgba(255, 0, 255, 0.1);
  transition: all var(--transition-base);
  position: relative;
}

.pricing-card:hover {
  border-color: var(--brand-pink);
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}

.pricing-card.featured {
  border-color: var(--brand-pink);
  box-shadow: var(--glow-pink);
}

.pricing-card.featured::before {
  content: 'Popular';
  position: absolute;
  top: -12px;
  right: var(--spacing-md);
  background: var(--brand-pink);
  color: var(--color-white);
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 600;
}

.pricing-header {
  margin-bottom: var(--spacing-md);
}

.pricing-name {
  font-size: 1.5rem;
  color: var(--color-white);
  margin-bottom: var(--spacing-xs);
}

.pricing-price {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--brand-pink);
  margin-bottom: var(--spacing-xs);
}

.pricing-period {
  color: var(--color-gray);
  font-size: 0.9rem;
}

.pricing-features {
  list-style: none;
  margin-bottom: var(--spacing-md);
}

.pricing-features li {
  padding: var(--spacing-xs) 0;
  color: var(--color-gray-light);
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
}

.pricing-features li::before {
  content: '✓';
  color: var(--brand-pink);
  font-weight: bold;
  width: 20px;
}

/* ============================================
   Blog Posts
   ============================================ */
.blog-post {
  background: var(--color-graphite-light);
  border-radius: 12px;
  padding: var(--spacing-lg);
  margin-bottom: var(--spacing-lg);
  border: 1px solid rgba(255, 0, 255, 0.1);
}

.blog-post-header {
  margin-bottom: var(--spacing-md);
}

.blog-post-title {
  font-size: 2rem;
  margin-bottom: var(--spacing-sm);
}

.blog-post-meta {
  color: var(--color-gray);
  font-size: 0.9rem;
  margin-bottom: var(--spacing-md);
}

.blog-post-content {
  color: var(--color-gray-light);
  line-height: 1.8;
}

.blog-post-content h3 {
  margin-top: var(--spacing-md);
  margin-bottom: var(--spacing-sm);
}

.blog-post-content p {
  margin-bottom: var(--spacing-md);
}

/* ============================================
   Case Study Cards
   ============================================ */
.case-study-card {
  background: var(--color-graphite-light);
  border-radius: 12px;
  padding: var(--spacing-lg);
  margin-bottom: var(--spacing-lg);
  border-left: 4px solid var(--brand-pink);
}

.case-study-header {
  margin-bottom: var(--spacing-md);
}

.case-study-title {
  font-size: 1.75rem;
  margin-bottom: var(--spacing-xs);
}

.case-study-client {
  color: var(--brand-pink);
  font-weight: 600;
  margin-bottom: var(--spacing-md);
}

.case-study-section {
  margin-bottom: var(--spacing-md);
}

.case-study-section h4 {
  color: var(--brand-pink);
  margin-bottom: var(--spacing-xs);
}

.case-study-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-xs);
  margin-top: var(--spacing-md);
}

.tag {
  background: rgba(255, 0, 255, 0.1);
  color: var(--brand-pink);
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: 20px;
  font-size: 0.875rem;
  border: 1px solid rgba(255, 0, 255, 0.2);
}

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

@keyframes glow {
  0%, 100% {
    box-shadow: 0 0 20px rgba(255, 0, 255, 0.3);
  }
  50% {
    box-shadow: 0 0 30px rgba(255, 0, 255, 0.5);
  }
}

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

/* ============================================
   Responsive Design
   ============================================ */
@media (max-width: 768px) {
  :root {
    --container-padding: 1rem;
    --spacing-xxl: 4rem;
    --spacing-xl: 3rem;
  }
  
  .mobile-menu-toggle {
    display: block;
  }
  
  .nav-menu {
    position: fixed;
    top: 70px;
    left: -100%;
    width: 100%;
    background: var(--color-graphite);
    flex-direction: column;
    padding: var(--spacing-md);
    transition: left var(--transition-base);
    border-top: 1px solid rgba(255, 0, 255, 0.1);
  }
  
  .nav-menu.active {
    left: 0;
  }
  
  .hero-buttons {
    flex-direction: column;
  }
  
  .hero-buttons .btn {
    width: 100%;
  }
  
  .grid-2,
  .grid-3,
  .grid-4 {
    grid-template-columns: 1fr;
  }
  
  .pricing-grid {
    grid-template-columns: 1fr;
  }
  
  .footer-content {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  h1 {
    font-size: 2rem;
  }
  
  h2 {
    font-size: 1.75rem;
  }
  
  .section {
    padding: var(--spacing-lg) 0;
  }
}

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

.skip-link {
  position: absolute;
  top: -40px;
  left: 0;
  background: var(--brand-pink);
  color: var(--color-white);
  padding: var(--spacing-sm);
  z-index: 10000;
  text-decoration: none;
}

.skip-link:focus {
  top: 0;
}

/* Focus styles for accessibility */
a:focus,
button:focus,
input:focus,
textarea:focus {
  outline: 2px solid var(--brand-pink);
  outline-offset: 2px;
}