/* Critical CSS - Above the fold content */

/* CSS Custom Properties */
:root {
  /* Colors */
  --primary-blue: #1e3a8a;
  --light-blue: #3b82f6;
  --success-green: #10b981;
  --warning-orange: #f59e0b;
  --bg-light: #dbeafe;
  --text-gray: #4b5563;
  --text-dark: #111827;
  --text-light: #9ca3af;
  --white: #ffffff;
  --black: #000000;
  
  /* Gradients */
  --gradient-primary: linear-gradient(135deg, var(--primary-blue), var(--light-blue));
  --gradient-success: linear-gradient(135deg, var(--success-green), #059669);
  --gradient-hero: linear-gradient(135deg, rgba(30, 58, 138, 0.9), rgba(59, 130, 246, 0.8));
  
  /* Typography */
  --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-heading: 'Poppins', -apple-system, BlinkMacSystemFont, sans-serif;
  
  /* Font Sizes */
  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-base: 1rem;
  --text-lg: 1.125rem;
  --text-xl: 1.25rem;
  --text-2xl: 1.5rem;
  --text-3xl: 1.875rem;
  --text-4xl: 2.25rem;
  --text-5xl: 3rem;
  --text-6xl: 3.75rem;
  
  /* Font Weights */
  --font-light: 300;
  --font-normal: 400;
  --font-medium: 500;
  --font-semibold: 600;
  --font-bold: 700;
  
  /* Spacing */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;
  
  /* Shadows */
  --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);
  
  /* Border Radius */
  --radius-sm: 0.25rem;
  --radius-md: 0.375rem;
  --radius-lg: 0.5rem;
  --radius-xl: 0.75rem;
  --radius-2xl: 1rem;
  --radius-full: 9999px;
  
  /* Transitions */
  --transition-fast: 0.15s ease-out;
  --transition-normal: 0.3s ease-out;
  --transition-slow: 0.5s ease-out;
  
  /* Z-index */
  --z-dropdown: 1000;
  --z-sticky: 1020;
  --z-fixed: 1030;
  --z-modal: 1040;
  --z-popover: 1050;
  --z-tooltip: 1060;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  -ms-text-size-adjust: 100%;
}

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

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: var(--font-semibold);
  line-height: 1.2;
  color: var(--text-dark);
  margin-bottom: var(--space-4);
}

h1 { font-size: var(--text-5xl); }
h2 { font-size: var(--text-4xl); }
h3 { font-size: var(--text-3xl); }
h4 { font-size: var(--text-2xl); }
h5 { font-size: var(--text-xl); }
h6 { font-size: var(--text-lg); }

p {
  margin-bottom: var(--space-4);
  color: var(--text-gray);
}

a {
  color: var(--light-blue);
  text-decoration: none;
  transition: color var(--transition-fast);
}

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

/* Container */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-4);
}

/* Loading Screen */
.loading-screen {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--gradient-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: var(--z-modal);
  opacity: 1;
  visibility: visible;
  transition: opacity var(--transition-slow), visibility var(--transition-slow);
}

.loading-screen.hidden {
  opacity: 0;
  visibility: hidden;
}

.loading-content {
  text-align: center;
  color: var(--white);
}

.loading-logo {
  margin-bottom: var(--space-8);
}

.loading-logo h2 {
  color: var(--white);
  font-size: var(--text-3xl);
  margin-bottom: var(--space-4);
}

.water-drop {
  width: 60px;
  height: 60px;
  margin: 0 auto var(--space-4);
  animation: dropBounce 2s infinite;
}

.water-drop img {
  width: 100%;
  height: 100%;
  /* Remove filter to show natural SVG white gradients */
}

@keyframes dropBounce {
  0%, 20%, 50%, 80%, 100% {
    transform: translateY(0);
  }
  40% {
    transform: translateY(-10px);
  }
  60% {
    transform: translateY(-5px);
  }
}

.loading-bar {
  width: 200px;
  height: 4px;
  background: rgba(255, 255, 255, 0.3);
  border-radius: var(--radius-full);
  overflow: hidden;
  margin: 0 auto;
}

.loading-progress {
  height: 100%;
  background: var(--white);
  border-radius: var(--radius-full);
  animation: loadingProgress 2s ease-in-out infinite;
}

@keyframes loadingProgress {
  0% {
    width: 0%;
    margin-left: 0%;
  }
  50% {
    width: 75%;
    margin-left: 0%;
  }
  100% {
    width: 0%;
    margin-left: 100%;
  }
}

/* Header */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(0, 0, 0, 0.1);
  z-index: var(--z-fixed);
  transition: all var(--transition-normal);
}

.header.scrolled {
  background: rgba(255, 255, 255, 0.98);
  box-shadow: var(--shadow-md);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 70px;
}

.nav-brand .logo {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.logo-icon {
  width: 32px;
  height: 32px;
  color: var(--light-blue);
}

.logo-icon img {
  width: 100%;
  height: 100%;
  /* Remove filter to show natural SVG colors */
}

.logo-text {
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  font-weight: var(--font-bold);
  color: var(--primary-blue);
}

.nav-menu {
  display: flex;
  list-style: none;
  gap: var(--space-8);
  margin: 0;
  padding: 0;
}

.nav-link {
  font-weight: var(--font-medium);
  color: var(--text-dark);
  transition: color var(--transition-fast);
  position: relative;
}

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

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: -8px;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--light-blue);
  border-radius: var(--radius-full);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 4px;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--space-2);
}

.nav-toggle span {
  width: 25px;
  height: 3px;
  background: var(--text-dark);
  border-radius: var(--radius-full);
  transition: all var(--transition-fast);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  font-family: var(--font-primary);
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  text-decoration: none;
  border: none;
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: all var(--transition-fast);
  text-align: center;
  white-space: nowrap;
}

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

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

.btn-secondary {
  background: transparent;
  color: var(--primary-blue);
  border: 2px solid var(--primary-blue);
}

.btn-secondary:hover {
  background: var(--primary-blue);
  color: var(--white);
}

.btn-large {
  padding: var(--space-4) var(--space-8);
  font-size: var(--text-base);
}

.btn-icon {
  width: 16px;
  height: 16px;
}

/* Hero Section */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  background: var(--gradient-hero);
}

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

.hero-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-16);
  align-items: center;
  padding: var(--space-20) 0;
}

.hero-title {
  font-size: var(--text-6xl);
  font-weight: var(--font-bold);
  color: var(--white);
  margin-bottom: var(--space-6);
  line-height: 1.1;
}

.title-accent {
  color: var(--success-green);
}

.hero-subtitle {
  font-size: var(--text-xl);
  color: rgba(255, 255, 255, 0.9);
  margin-bottom: var(--space-8);
  line-height: 1.6;
}

.hero-features {
  display: flex;
  gap: var(--space-6);
  margin-bottom: var(--space-10);
}

.feature-item {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  color: var(--white);
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
}

.feature-icon {
  width: 20px;
  height: 20px;
  color: var(--success-green);
}

.hero-actions {
  display: flex;
  gap: var(--space-4);
}

/* Responsive Design */
@media (max-width: 1024px) {
  :root {
    --text-6xl: 2.5rem;
    --text-5xl: 2rem;
    --text-4xl: 1.75rem;
  }
  
  .hero-content {
    grid-template-columns: 1fr;
    gap: var(--space-12);
    text-align: center;
  }
  
  .hero-features {
    justify-content: center;
  }
}

@media (max-width: 768px) {
  .container {
    padding: 0 var(--space-4);
  }
  
  .nav-menu {
    position: fixed;
    top: 70px;
    left: -100%;
    width: 100%;
    height: calc(100vh - 70px);
    background: var(--white);
    flex-direction: column;
    align-items: center;
    justify-content: flex-start;
    padding: var(--space-8) 0;
    transition: left var(--transition-normal);
    box-shadow: var(--shadow-lg);
  }
  
  .nav-menu.active {
    left: 0;
  }
  
  .nav-toggle {
    display: flex;
  }
  
  .nav-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
  }
  
  .nav-toggle.active span:nth-child(2) {
    opacity: 0;
  }
  
  .nav-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -6px);
  }
  
  .hero-title {
    font-size: var(--text-4xl);
    line-height: 1.2;
    margin-bottom: var(--space-4);
  }
  
  .hero-subtitle {
    font-size: var(--text-lg);
    line-height: 1.5;
  }
  
  .hero-features {
    flex-direction: column;
    gap: var(--space-4);
  }
  
  .hero-actions {
    flex-direction: column;
    align-items: center;
  }
}

@media (max-width: 480px) {
  :root {
    --text-4xl: 1.75rem;
    --text-3xl: 1.5rem;
    --text-2xl: 1.25rem;
  }
  
  .hero-title {
    font-size: 1.875rem !important;
    line-height: 1.1;
    word-break: break-word;
    hyphens: auto;
  }
  
  .hero-content {
    padding: var(--space-8) var(--space-4);
    min-height: auto;
  }
  
  .hero {
    min-height: 100vh;
    padding-top: 70px; /* Account for fixed header */
  }
  
  .btn {
    width: 100%;
    justify-content: center;
  }
}

@media (max-width: 360px) {
  .container {
    padding: 0 var(--space-3);
  }
  
  .hero-title {
    font-size: 1.625rem !important;
    margin-bottom: var(--space-3);
  }
  
  .hero-subtitle {
    font-size: var(--text-base) !important;
  }
  
  .hero-content {
    padding: var(--space-6) 0;
  }
}