/* Kai Investment Platform - Clean Waitlist Landing Page */

/* Clean CSS Variables - Minimal Design System */
:root {
  /* Primary Colors */
  --kai-primary: #2563eb;
  --kai-primary-hover: #1d4ed8;
  --kai-primary-light: #dbeafe;
  --kai-primary-dark: #1e40af;

  /* Semantic Colors */
  --kai-success: #16a34a;
  --kai-success-light: #dcfce7;
  --kai-warning: #ea580c;
  --kai-warning-light: #fed7aa;
  --kai-danger: #dc2626;
  --kai-danger-light: #fecaca;

  /* Financial Colors */
  --kai-health-excellent: #059669;
  --kai-health-good: #16a34a;
  --kai-health-moderate: #ea580c;
  --kai-health-poor: #dc2626;

  /* Background Colors */
  --kai-bg-primary: #0f172a;
  --kai-bg-secondary: #1e293b;
  --kai-bg-card: #334155;
  --kai-bg-elevated: #475569;

  /* Text Colors */
  --kai-text-primary: #f8fafc;
  --kai-text-secondary: #cbd5e1;
  --kai-text-tertiary: #94a3b8;
  --kai-text-muted: #64748b;

  /* Border Colors */
  --kai-border-primary: #475569;
  --kai-border-secondary: #64748b;
  --kai-border-focus: var(--kai-primary);

  /* Shadows */
  --kai-shadow-sm: 0 1px 3px 0 rgba(0,0,0,0.1);
  --kai-shadow-md: 0 4px 6px -1px rgba(0,0,0,0.1);
  --kai-shadow-lg: 0 8px 15px -2px rgba(0,0,0,0.15);
  --kai-shadow-dark-md: 0 4px 16px 0 rgba(16, 24, 40, 0.15);
  --kai-shadow-dark-lg: 0 8px 32px 0 rgba(16, 24, 40, 0.18);

  /* Border Radius */
  --kai-radius-xs: 2px;
  --kai-radius-sm: 4px;
  --kai-radius-md: 6px;
  --kai-radius-lg: 8px;
  --kai-radius-xl: 12px;
  --kai-radius-2xl: 16px;
  --kai-radius-full: 9999px;

  /* Spacing */
  --kai-space-xs: 0.125rem;
  --kai-space-sm: 0.375rem;
  --kai-space-1: 0.25rem;
  --kai-space-2: 0.5rem;
  --kai-space-3: 0.75rem;
  --kai-space-4: 1rem;
  --kai-space-5: 1.25rem;
  --kai-space-6: 1.5rem;
  --kai-space-8: 2rem;
  --kai-space-10: 2.5rem;
  --kai-space-12: 3rem;
  --kai-space-16: 4rem;
  --kai-space-lg: 1.5rem;
  --kai-space-md: 1rem;
  --kai-space-xl: 3rem;

  /* Typography */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', Consolas, monospace;
  --font-display: 'Cal Sans', var(--font-sans);
  --kai-leading-normal: 1.5;
  --kai-text-xs: 0.75rem;
  --kai-text-sm: 0.875rem;
  --kai-font-medium: 500;

  /* Glass Effects */
  --kai-glass-primary: rgba(51, 65, 85, 0.6);
  --kai-glass-secondary: rgba(71, 85, 105, 0.4);
  --kai-glass-border: rgba(148, 163, 184, 0.2);
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
  height: 100%;
}

body {
  background: var(--kai-bg-primary);
  color: var(--kai-text-primary);
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  font-feature-settings: 'cv02', 'cv03', 'cv04', 'cv11';
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  line-height: var(--kai-leading-normal);
  min-height: 100vh;
  overflow-x: hidden;
  position: relative;
}

/* Simple Background */
.kai-bg-pattern {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background:
    radial-gradient(circle at 25% 25%, rgba(0, 102, 255, 0.05) 0%, transparent 50%),
    radial-gradient(circle at 75% 75%, rgba(124, 58, 237, 0.05) 0%, transparent 50%);
  background-size: 100% 100%;
  pointer-events: none;
  z-index: -1;
}

/* Main Container */
.kai-main-container {
  position: relative;
  z-index: 1;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--kai-space-lg);
}

/* Waitlist Container */
.kai-waitlist-container {
  width: 100%;
  padding: var(--kai-space-6);
  max-width: 480px;
  margin: 0 auto;
  text-align: center;
}

@media (min-width: 768px) {
  .kai-waitlist-container {
    padding: var(--kai-space-10);
    max-width: 600px;
  }
}

@media (min-width: 1024px) {
  .kai-waitlist-container {
    padding: var(--kai-space-16);
    max-width: 720px;
  }
}

/* Hero Section */
.kai-waitlist-hero {
  margin-bottom: var(--kai-space-10);
}

.kai-heading-hero {
  font-family: var(--font-display);
  font-size: 3.5rem;
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.02em;
  margin-bottom: var(--kai-space-4);
  color: var(--kai-text-primary);
  background: none;
}

.kai-text-hero {
  font-size: 1.125rem;
  font-weight: 400;
  line-height: 1.6;
  color: var(--kai-text-secondary);
  max-width: 100%;
  margin: 0 auto var(--kai-space-6) auto;
}

/* Simple Card */
.kai-waitlist-card {
  background: var(--kai-bg-card);
  border: 1px solid var(--kai-border-primary);
  border-radius: var(--kai-radius-xl);
  padding: var(--kai-space-6) var(--kai-space-5);
  box-shadow: 0 16px 48px 0 rgba(16, 24, 40, 0.25);
  backdrop-filter: blur(28px);
  -webkit-backdrop-filter: blur(28px);
  position: relative;
  overflow: hidden;
  margin-bottom: var(--kai-space-4);
  max-width: 420px;
  margin-left: auto;
  margin-right: auto;
}

@media (min-width: 768px) {
  .kai-waitlist-card {
    max-width: 600px;
    padding: var(--kai-space-8) var(--kai-space-6);
  }
}

.kai-waitlist-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, 
    rgba(255, 255, 255, 0.05) 0%, 
    transparent 50%, 
    rgba(255, 255, 255, 0.02) 100%);
  pointer-events: none;
  border-radius: inherit;
}

/* Form Styles */
.kai-waitlist-form {
  position: relative;
  z-index: 1;
}

.kai-form-group {
  margin-bottom: var(--kai-space-2);
  text-align: left;
}

.kai-form-group:last-child {
  margin-bottom: 0;
  text-align: center;
  margin-top: var(--kai-space-4);
}

/* Enhanced Form Fields Row */
.kai-form-fields-row {
  display: flex;
  flex-direction: column;
  gap: var(--kai-space-1);
  margin-bottom: var(--kai-space-2);
}

.kai-form-field {
  flex: 1;
  margin-bottom: 0;
  position: relative;
}

/* Side-by-side layout on desktop */
@media (min-width: 768px) {
  .kai-form-fields-row {
    flex-direction: row;
    gap: var(--kai-space-4);
    align-items: flex-end;
  }
}

/* Enhanced Label Styling */
.kai-label {
  display: block;
  font-family: var(--font-sans);
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--kai-text-secondary);
  margin-bottom: 0.5rem;
  letter-spacing: 0;
  text-align: left;
  transition: all 0.3s ease;
}

/* Enhanced Input Styling */
.kai-input {
  background-color: var(--kai-bg-elevated);
  border: 1px solid var(--kai-border-primary);
  border-radius: var(--kai-radius-lg);
  padding: var(--kai-space-4) var(--kai-space-5);
  color: var(--kai-text-primary);
  font-size: 1rem;
  font-family: var(--font-sans);
  transition: border-color 0.2s ease-in-out, box-shadow 0.2s ease-in-out, background-color 0.2s;
  width: 100%;
  height: 48px;
}

.kai-input:focus {
  outline: none;
  border-color: var(--kai-primary);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
  background-color: rgba(255, 255, 255, 0.08);
}

.kai-input::placeholder {
  color: var(--kai-text-tertiary);
}

.kai-input-error {
  border-color: var(--kai-danger) !important;
  box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.1) !important;
}

/* Button Styling */
.kai-btn-primary {
  background: linear-gradient(135deg, var(--kai-primary) 0%, var(--kai-primary-hover) 100%);
  border: none;
  color: white;
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 1rem;
  padding: var(--kai-space-4) var(--kai-space-8);
  border-radius: var(--kai-radius-lg);
  transition: all 0.2s ease-in-out;
  box-shadow: var(--kai-shadow-dark-md);
  cursor: pointer;
  height: 48px;
  width: 100%;
  position: relative;
  overflow: hidden;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--kai-space-2);
  text-decoration: none;
}

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

.kai-btn-primary:active {
  transform: translateY(0);
}

.kai-btn-primary:disabled {
  opacity: 0.7;
  cursor: not-allowed;
}

.kai-btn-loading {
  pointer-events: none;
  opacity: 0.7;
}

.kai-loading-spinner {
  display: inline-block;
  width: 16px;
  height: 16px;
  border: 2px solid transparent;
  border-top: 2px solid white;
  border-radius: 50%;
  animation: kai-spin 1s linear infinite;
  margin-right: var(--kai-space-xs);
}

@keyframes kai-spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

/* Error Styling */
.kai-error {
  margin-top: var(--kai-space-xs);
  min-height: 20px;
}

.kai-error-message {
  color: var(--kai-danger);
  font-size: var(--kai-text-sm);
  font-weight: var(--kai-font-medium);
  display: flex;
  align-items: center;
  gap: var(--kai-space-xs);
}

.kai-error-message::before {
  content: '⚠';
  font-size: var(--kai-text-sm);
  color: var(--kai-danger);
}

/* Success State */
.kai-success-state {
  text-align: center;
  padding: var(--kai-space-lg);
}

.kai-success-icon {
  color: var(--kai-success);
  margin-bottom: var(--kai-space-md);
}

.kai-success-title {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 700;
  color: var(--kai-text-primary);
  margin-bottom: var(--kai-space-2);
}

.kai-success-message {
  color: var(--kai-text-secondary);
  font-size: 1rem;
  font-weight: 400;
}

/* Trust Section */
.kai-trust-section {
  margin-bottom: var(--kai-space-lg);
}

.kai-trust-indicators {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: var(--kai-space-lg);
  flex-wrap: wrap;
}

.kai-trust-item {
  display: flex;
  align-items: center;
  gap: var(--kai-space-xs);
  color: var(--kai-text-tertiary);
  font-size: var(--kai-text-sm);
  font-weight: var(--kai-font-medium);
  padding: var(--kai-space-xs) var(--kai-space-sm);
  background: var(--kai-glass-secondary);
  border: 1px solid var(--kai-border-secondary);
  border-radius: var(--kai-radius-lg);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.kai-trust-icon {
  color: var(--kai-success);
  flex-shrink: 0;
}

/* Flash Messages */
.kai-flash-container {
  position: fixed;
  top: var(--kai-space-md);
  right: var(--kai-space-md);
  z-index: 1000;
  max-width: 400px;
}

.kai-flash {
  background: var(--kai-glass-primary);
  border: 1px solid var(--kai-glass-border);
  border-radius: var(--kai-radius-md);
  padding: var(--kai-space-sm) var(--kai-space-md);
  margin-bottom: var(--kai-space-xs);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: var(--kai-shadow-sm);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.kai-flash-success {
  border-color: rgba(34, 197, 94, 0.3);
  color: var(--kai-success);
}

.kai-flash-error {
  border-color: rgba(239, 68, 68, 0.3);
  color: var(--kai-danger);
}

.kai-flash-message {
  font-size: var(--kai-text-sm);
  font-weight: var(--kai-font-medium);
}

.kai-flash-close {
  background: none;
  border: none;
  color: inherit;
  cursor: pointer;
  padding: var(--kai-space-xs);
  border-radius: var(--kai-radius-sm);
  margin-left: var(--kai-space-sm);
}

.kai-flash-close:hover {
  background: rgba(255, 255, 255, 0.1);
}

/* Screen Reader Only */
.kai-sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* Mobile Optimizations */
@media (max-width: 767px) {
  .kai-main-container {
    padding: var(--kai-space-sm);
  }
  
  .kai-waitlist-container {
    max-width: 100%;
  }
  
.kai-waitlist-card {
  background: var(--kai-bg-card);
  border: 1px solid var(--kai-border-primary);
  border-radius: var(--kai-radius-2xl);
  padding: var(--kai-space-10);
  box-shadow: var(--kai-shadow-dark-lg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  position: relative;
  overflow: hidden;
  margin-bottom: var(--kai-space-6);
  transition: box-shadow 0.2s ease-in-out, transform 0.2s ease-in-out;
}
.kai-waitlist-card:hover {
  box-shadow: 0 12px 40px 0 rgba(16, 24, 40, 0.22);
  transform: translateY(-2px) scale(1.01);
}
  
  .kai-trust-item {
    font-size: var(--kai-text-xs);
    padding: var(--kai-space-xs);
  }
  
  .kai-flash-container {
    top: var(--kai-space-sm);
    right: var(--kai-space-sm);
    left: var(--kai-space-sm);
    max-width: none;
  }
}

/* Large Desktop Optimizations */
@media (min-width: 1200px) {
  .kai-waitlist-container {
    max-width: 800px;
  }
  
  .kai-waitlist-card {
    padding: var(--kai-space-xl);
  }
}

/* High Contrast Mode Support */
@media (prefers-contrast: high) {
  :root {
    --kai-text-primary: #FFFFFF;
    --kai-text-secondary: #FFFFFF;
    --kai-border-primary: #FFFFFF;
    --kai-glass-border: rgba(255, 255, 255, 0.3);
  }
}

/* Focus Visible Support */
.kai-input:focus-visible,
.kai-btn-primary:focus-visible,
.kai-flash-close:focus-visible {
  outline: 2px solid var(--kai-primary);
  outline-offset: 2px;
}