/* Modern DataPingo Gray Theme - Matching the live website */

/* CSS Variables for consistent theming */
:root {
  --primary-purple: #8B5CF6;
  --primary-teal: #14B8A6;
  --gradient-primary: linear-gradient(135deg, #8B5CF6 0%, #6366F1 50%, #14B8A6 100%);
  --gradient-secondary: linear-gradient(135deg, #F8FAFC 0%, #F1F5F9 100%);
  --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;
  --text-primary: #1F2937;
  --text-secondary: #4B5563;
  --text-light: #6B7280;
  --white: #FFFFFF;
  --light-bg: #F9FAFB;
  --card-bg: #FFFFFF;
  --border-light: #E5E7EB;
  --border-medium: #D1D5DB;
  --shadow-light: 0 1px 3px rgba(0, 0, 0, 0.1);
  --shadow-medium: 0 4px 6px rgba(0, 0, 0, 0.1);
  --shadow-large: 0 10px 25px rgba(0, 0, 0, 0.15);
  --shadow-hover: 0 20px 40px rgba(0, 0, 0, 0.1);
  --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-fast: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Reset and base styles */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--gray-50);
  color: var(--text-primary);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  scroll-behavior: smooth;
}

/* Images */
img {
  max-width: 100%;
  height: auto;
  image-rendering: optimizeQuality;
}

/* NAVBAR - Enhanced for Web App */
.navbar {
  width: 100%;
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  padding: 20px 0;
  box-shadow: var(--shadow-medium);
  border-bottom: 1px solid var(--border-light);
  transition: var(--transition-smooth);
}

.navbar:hover {
  box-shadow: var(--shadow-large);
}

.nav-menu {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 40px;
}

.logo-link {
  display: flex;
  align-items: center;
  text-decoration: none;
  transition: var(--transition-smooth);
}

.logo-link:hover {
  transform: scale(1.05);
}

.navbar .logo {
  height: 55px;
  max-height: 65px;
  border-radius: 8px;
  transition: var(--transition-smooth);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav-link {
  font-weight: 500;
  text-decoration: none;
  color: var(--text-primary);
  padding: 12px 16px;
  border-radius: 8px;
  transition: var(--transition-smooth);
  position: relative;
  cursor: pointer;
}

.nav-link:hover {
  color: var(--primary-purple);
  background: var(--gray-100);
  transform: translateY(-1px);
}

/* Dropdown styles - Enhanced */
.dropdown {
  position: relative;
}

.dropdown-content {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  background: var(--white);
  min-width: 220px;
  box-shadow: var(--shadow-large);
  border-radius: 12px;
  padding: 12px;
  border: 1px solid var(--border-light);
  z-index: 1000;
  opacity: 0;
  transform: translateY(-10px);
  transition: var(--transition-smooth);
}

.dropdown:hover .dropdown-content {
  display: block;
  opacity: 1;
  transform: translateY(0);
}

.dropdown-content a {
  display: block;
  padding: 12px 16px;
  text-decoration: none;
  color: var(--text-primary);
  border-radius: 8px;
  transition: var(--transition-fast);
  font-weight: 500;
  position: relative;
  overflow: hidden;
}

.dropdown-content a::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: var(--gradient-primary);
  transition: var(--transition-smooth);
  z-index: -1;
}

.dropdown-content a:hover {
  color: var(--white);
  transform: translateX(4px);
}

.dropdown-content a:hover::before {
  left: 0;
}

/* HERO SECTION - Enhanced for Web App */
.hero {
  text-align: center;
  padding: 100px 40px 120px;
  background: linear-gradient(135deg, var(--gray-50) 0%, rgba(139, 92, 246, 0.05) 50%, rgba(20, 184, 166, 0.05) 100%);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(circle at 30% 20%, rgba(139, 92, 246, 0.1) 0%, transparent 50%),
              radial-gradient(circle at 70% 80%, rgba(20, 184, 166, 0.1) 0%, transparent 50%);
  opacity: 1;
  z-index: 1;
  animation: float 6s ease-in-out infinite;
}

@keyframes float {
  0%, 100% { transform: translateY(0px); }
  50% { transform: translateY(-10px); }
}

.hero > * {
  position: relative;
  z-index: 2;
}

.hero h1 {
  font-size: 4rem;
  font-weight: 700;
  margin-bottom: 24px;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1.2;
  animation: slideInUp 0.8s ease-out;
}

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

.hero p {
  font-size: 1.3rem;
  color: var(--text-secondary);
  max-width: 700px;
  margin: 0 auto 32px;
  line-height: 1.6;
  animation: slideInUp 0.8s ease-out 0.2s both;
}

.hero-cta {
  display: inline-flex;
  align-items: center;
  background: var(--gradient-primary);
  color: var(--white);
  padding: 18px 36px;
  text-decoration: none;
  border-radius: 50px;
  font-weight: 600;
  font-size: 1.2rem;
  margin: 32px 0 50px;
  transition: var(--transition-smooth);
  box-shadow: var(--shadow-medium);
  position: relative;
  overflow: hidden;
  animation: slideInUp 0.8s ease-out 0.4s both;
}

.hero-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: var(--transition-smooth);
}

.hero-cta:hover {
  transform: translateY(-3px) scale(1.02);
  box-shadow: var(--shadow-hover);
  filter: brightness(1.1);
}

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

.hero-img {
  max-width: 900px;
  width: 100%;
  border-radius: 16px;
  box-shadow: var(--shadow-large);
  margin-top: 40px;
  transition: var(--transition-smooth);
  animation: slideInUp 0.8s ease-out 0.6s both;
}

.hero-img:hover {
  transform: scale(1.02);
  box-shadow: var(--shadow-hover);
}

/* SECTIONS - Enhanced */
.section {
  padding: 100px 40px;
  max-width: 1200px;
  margin: 0 auto;
}

.section.alt {
  background: linear-gradient(135deg, var(--white) 0%, var(--gray-50) 100%);
  border-radius: 20px;
  margin: 40px auto;
  box-shadow: var(--shadow-medium);
  border: 1px solid var(--border-light);
  position: relative;
  overflow: hidden;
  transition: var(--transition-smooth);
}

.section.alt:hover {
  box-shadow: var(--shadow-large);
  transform: translateY(-2px);
}

.section.alt::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(circle at 20% 80%, rgba(139, 92, 246, 0.03) 0%, transparent 50%),
              radial-gradient(circle at 80% 20%, rgba(20, 184, 166, 0.03) 0%, transparent 50%);
  z-index: 1;
}

.section.alt > * {
  position: relative;
  z-index: 2;
}

.section h2 {
  font-size: 2.8rem;
  font-weight: 700;
  text-align: center;
  margin-bottom: 60px;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section p {
  font-size: 1.25rem;
  color: var(--text-secondary);
  text-align: center;
  max-width: 800px;
  margin: 0 auto;
  line-height: 1.7;
}

/* FEATURES GRID - Enhanced */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 40px;
  margin-top: 60px;
}

.feature {
  text-align: center;
  padding: 40px 24px;
  background: var(--white);
  border-radius: 16px;
  box-shadow: var(--shadow-light);
  transition: var(--transition-smooth);
  border: 1px solid var(--border-light);
  position: relative;
  overflow: hidden;
}

.feature::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--gradient-primary);
  transform: scaleX(0);
  transition: var(--transition-smooth);
}

.feature:hover {
  transform: translateY(-10px) scale(1.02);
  box-shadow: var(--shadow-hover);
  border-color: var(--primary-teal);
}

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

.feature-icon {
  font-size: 3rem;
  margin-bottom: 24px;
  display: flex;
  justify-content: center;
  align-items: center;
}

.feature-icon img {
  width: 48px;
  height: 48px;
  object-fit: cover;
  border-radius: 8px;
  box-shadow: var(--shadow-light);
  transition: var(--transition-smooth);
}

.feature:hover .feature-icon img {
  transform: scale(1.15) rotate(5deg);
  box-shadow: var(--shadow-medium);
}

.feature-title {
  font-size: 1.6rem;
  font-weight: 600;
  margin-bottom: 16px;
  color: var(--text-primary);
}

.feature-desc {
  color: var(--text-secondary);
  line-height: 1.6;
  font-size: 1.05rem;
}

/* HOW TO USE SECTION - Enhanced */
.how-to-use {
  padding: 100px 40px;
  max-width: 1200px;
  margin: 0 auto;
}

.step {
  display: flex;
  align-items: center;
  gap: 40px;
  margin-bottom: 60px;
  padding: 40px;
  background: var(--white);
  border-radius: 16px;
  box-shadow: var(--shadow-light);
  border: 1px solid var(--border-light);
  transition: var(--transition-smooth);
  position: relative;
  overflow: hidden;
}

.step::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(139, 92, 246, 0.02), transparent);
  transition: var(--transition-smooth);
}

.step:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-large);
}

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

.step:nth-child(even) {
  flex-direction: row-reverse;
}

.step-number {
  width: 70px;
  height: 70px;
  background: var(--gradient-primary);
  color: var(--white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  font-weight: 700;
  flex-shrink: 0;
  transition: var(--transition-smooth);
  box-shadow: var(--shadow-medium);
}

.step:hover .step-number {
  transform: scale(1.1) rotate(360deg);
  box-shadow: var(--shadow-large);
}

.step-content {
  flex: 1;
}

.step-title {
  font-size: 1.6rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 12px;
}

.step-desc {
  color: var(--text-secondary);
  line-height: 1.6;
  font-size: 1.15rem;
}

.step-image {
  flex: 1;
  text-align: center;
}

.step-image img {
  max-width: 100%;
  height: auto;
  border-radius: 12px;
  box-shadow: var(--shadow-medium);
  transition: var(--transition-smooth);
}

.step:hover .step-image img {
  transform: scale(1.03);
  box-shadow: var(--shadow-large);
}

/* USE CASES - Enhanced */
.use-cases {
  text-align: center;
}

.use-cases ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: inline-block;
}

.use-cases li {
  padding: 8px 0;
  font-size: 1.15rem;
  color: var(--text-secondary);
  transition: var(--transition-fast);
}

.use-cases li:hover {
  color: var(--primary-purple);
  transform: translateX(5px);
}

.use-cases li::before {
  content: "✓";
  color: var(--primary-teal);
  font-weight: bold;
  margin-right: 8px;
}

/* FOOTER - Enhanced */
footer {
  background: var(--gray-800);
  color: var(--white);
  padding: 80px 40px 40px;
  margin-top: 80px;
  position: relative;
  overflow: hidden;
}

footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--gradient-primary);
}

.footer-content {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 40px;
  margin-bottom: 40px;
}

.footer-col h4 {
  font-weight: 600;
  margin-bottom: 20px;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  font-size: 1.1rem;
}

.footer-col a {
  display: block;
  color: #CBD5E1;
  text-decoration: none;
  margin-bottom: 12px;
  transition: var(--transition-fast);
  font-weight: 400;
  position: relative;
  padding-left: 0;
}

.footer-col a::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  width: 0;
  height: 2px;
  background: var(--primary-teal);
  transition: var(--transition-fast);
  transform: translateY(-50%);
}

.footer-col a:hover {
  color: var(--primary-teal);
  transform: translateX(8px);
  padding-left: 12px;
}

.footer-col a:hover::before {
  width: 8px;
}

.footer-bottom {
  text-align: center;
  padding-top: 40px;
  border-top: 1px solid #374151;
  color: #9CA3AF;
  font-size: 0.9rem;
}

/* FORM ELEMENTS - Enhanced */
input, textarea, select {
  background: var(--white);
  color: var(--text-primary);
  border: 2px solid var(--border-light);
  border-radius: 8px;
  padding: 12px;
  font-family: 'Inter', sans-serif;
  transition: var(--transition-smooth);
  font-size: 1rem;
}

input:focus, textarea:focus, select:focus {
  outline: none;
  border-color: var(--primary-purple);
  box-shadow: 0 0 0 3px rgba(139, 92, 246, 0.1);
  transform: translateY(-1px);
}

input::placeholder, textarea::placeholder {
  color: var(--text-light);
}

/* BUTTONS - Enhanced */
button, .btn {
  background: var(--gradient-primary);
  color: var(--white);
  border: none;
  padding: 14px 28px;
  border-radius: 8px;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition-smooth);
  text-decoration: none;
  display: inline-block;
  position: relative;
  overflow: hidden;
  font-size: 1rem;
}

button::before, .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: var(--transition-smooth);
}

button:hover, .btn:hover {
  transform: translateY(-2px) scale(1.02);
  box-shadow: var(--shadow-medium);
  filter: brightness(1.1);
}

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

/* NEWSLETTER SIGNUP - Enhanced */
.newsletter-signup {
  max-width: 500px;
  margin: 0 auto;
  background: var(--white);
  padding: 40px;
  border-radius: 12px;
  box-shadow: var(--shadow-medium);
  border-top: 4px solid var(--primary-teal);
  transition: var(--transition-smooth);
}

.newsletter-signup:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-large);
}

.newsletter-description {
  margin-bottom: 20px;
  color: var(--text-secondary);
  font-size: 1.05rem;
}

.newsletter-form {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.newsletter-input {
  flex: 1;
  min-width: 200px;
}

.newsletter-button {
  background: var(--gradient-primary);
  color: white;
  border: none;
  padding: 14px 24px;
  border-radius: 6px;
  font-weight: 600;
  cursor: pointer;
  font-family: 'Inter', sans-serif;
  transition: var(--transition-smooth);
}

.newsletter-button:hover {
  transform: translateY(-2px) scale(1.02);
  filter: brightness(1.1);
  box-shadow: var(--shadow-medium);
}

.newsletter-disclaimer {
  margin-top: 15px;
  font-size: 0.85rem;
  color: var(--text-light);
}

/* RESPONSIVE DESIGN - Optimized for Web App */
@media (max-width: 768px) {
  .navbar {
    padding: 16px 0;
  }
  
  .navbar .logo {
    height: 50px;
    max-height: 60px;
  }
  
  .nav-menu {
    flex-direction: column;
    gap: 16px;
    padding: 0 20px;
  }
  
  .hero {
    padding: 80px 20px 100px;
  }
  
  .hero h1 {
    font-size: 3rem;
  }
  
  .section {
    padding: 80px 20px;
  }
  
  .section h2 {
    font-size: 2.2rem;
  }
  
  .features-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }
  
  .step {
    flex-direction: column !important;
    text-align: center;
  }
  
  .step:nth-child(even) {
    flex-direction: column !important;
  }
  
  .footer-content {
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
  }
}

/* Additional page-specific styles */
.partner-main,
.about-main,
.resources-main {
  min-height: 60vh;
}

.partner-main .hero,
.about-main .hero,
.resources-main .hero {
  padding: 80px 40px;
  background: var(--gradient-secondary);
}

.partner-main .section,
.about-main .section,
.resources-main .section {
  padding: 80px 40px;
}

/* Additional gray theme elements */
.card, .content-card {
  background: var(--white);
  border: 1px solid var(--border-light);
  transition: var(--transition-smooth);
}

.card:hover, .content-card:hover {
  box-shadow: var(--shadow-medium);
  transform: translateY(-2px);
}

/* Text readability in gray theme */
h1, h2, h3, h4, h5, h6 {
  color: var(--text-primary);
}

p, span, div {
  color: var(--text-secondary);
}

a {
  color: var(--primary-teal);
  transition: var(--transition-fast);
}

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

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

/* Smooth scrolling for web app navigation */
html {
  scroll-behavior: smooth;
}

/* Focus states for keyboard navigation */
*:focus {
  outline: 2px solid var(--primary-purple);
  outline-offset: 2px;
}

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

::-moz-selection {
  background: var(--primary-purple);
  color: var(--white);
}

/* Scrollbar styling for webkit browsers */
::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: var(--gray-100);
}

::-webkit-scrollbar-thumb {
  background: var(--gradient-primary);
  border-radius: 4px;
}

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

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

/* High contrast mode support */
@media (prefers-contrast: high) {
  :root {
    --text-primary: #000000;
    --text-secondary: #333333;
    --border-light: #666666;
  }
}