/* ============================================
   KAI Waitlist - Custom Styles
   Ethereal Portal Color Palette
   ============================================ */

/* CSS Variables */
:root {
  --kai-twilight: #1E3A8A;
  --kai-twilight-dark: #152a66;
  --kai-sky: #60A5FA;
  --kai-sky-light: #93c5fd;
  --kai-gold: #F59E0B;
  --kai-gold-light: #fbbf24;
  --kai-violet: #C026D3;
  --kai-violet-light: #d946ef;
  --kai-white: #F8FAFC;
  --kai-white-muted: #94a3b8;
  --kai-bg: #0c1426;
  --kai-surface: #1a2744;
  --kai-error: #ef4444;
  --kai-success: #22c55e;
}

/* Base Styles */
* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  min-height: 100vh;
  overflow-x: hidden;
}

/* Selection */
::selection {
  background: var(--kai-sky);
  color: var(--kai-bg);
}

/* Buttons */
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 1rem 2rem;
  font-family: 'Sora', sans-serif;
  font-weight: 600;
  font-size: 1rem;
  color: var(--kai-bg);
  background: linear-gradient(135deg, var(--kai-gold) 0%, var(--kai-gold-light) 100%);
  border: none;
  border-radius: 12px;
  cursor: pointer;
  transition: all 0.3s ease;
  min-height: 56px;
  text-decoration: none;
}

.btn-primary:hover {
  background: linear-gradient(135deg, var(--kai-gold-light) 0%, var(--kai-gold) 100%);
  box-shadow: 0 0 30px rgba(245, 158, 11, 0.4);
  transform: translateY(-2px);
}

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

.btn-primary:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 1rem 2rem;
  font-family: 'Sora', sans-serif;
  font-weight: 600;
  font-size: 1rem;
  color: var(--kai-sky);
  background: transparent;
  border: 2px solid var(--kai-sky);
  border-radius: 12px;
  cursor: pointer;
  transition: all 0.3s ease;
  min-height: 56px;
  text-decoration: none;
}

.btn-secondary:hover {
  background: rgba(96, 165, 250, 0.1);
  border-color: var(--kai-sky-light);
  transform: translateY(-2px);
}

/* Glass Card */
.glass-card {
  background: rgba(26, 39, 68, 0.7);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(96, 165, 250, 0.15);
  border-radius: 16px;
  transition: all 0.3s ease;
}

.glass-card:hover {
  border-color: rgba(96, 165, 250, 0.3);
}

/* Form Inputs */
.input-field {
  width: 100%;
  padding: 1rem 1.25rem;
  font-size: 1rem;
  color: var(--kai-white);
  background: rgba(26, 39, 68, 0.8);
  border: 1px solid rgba(96, 165, 250, 0.2);
  border-radius: 12px;
  outline: none;
  transition: all 0.3s ease;
  min-height: 56px;
}

.input-field::placeholder {
  color: var(--kai-white-muted);
  opacity: 0.6;
}

.input-field:focus {
  border-color: var(--kai-sky);
  box-shadow: 0 0 0 3px rgba(96, 165, 250, 0.2);
}

.input-field.error {
  border-color: var(--kai-error);
}

/* Radio Options */
.radio-option {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1.25rem;
  background: rgba(26, 39, 68, 0.6);
  border: 1px solid rgba(96, 165, 250, 0.15);
  border-radius: 12px;
  transition: all 0.3s ease;
}

.radio-option:hover {
  border-color: rgba(96, 165, 250, 0.3);
  background: rgba(26, 39, 68, 0.8);
}

.radio-option.selected {
  border-color: var(--kai-sky);
  background: rgba(96, 165, 250, 0.1);
}

.radio-dot {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  border: 2px solid var(--kai-white-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: all 0.2s ease;
}

.radio-option.selected .radio-dot {
  border-color: var(--kai-sky);
  background: var(--kai-sky);
}

.radio-option.selected .radio-dot::after {
  content: '';
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--kai-bg);
}

/* Checkbox */
.checkbox-box {
  width: 20px;
  height: 20px;
  border: 2px solid var(--kai-white-muted);
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s ease;
}

.checkbox-box:hover {
  border-color: var(--kai-sky);
}

/* Social Icons */
.social-icon {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 1px solid rgba(96, 165, 250, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--kai-white-muted);
  transition: all 0.3s ease;
}

.social-icon:hover {
  border-color: var(--kai-sky);
  color: var(--kai-sky);
  transform: translateY(-2px);
}

/* Animations */
@keyframes fade-in {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

@keyframes fade-in-up {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes bounce-slow {
  0%, 100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(6px);
  }
}

@keyframes pulse-glow {
  0%, 100% {
    box-shadow: 0 0 20px rgba(96, 165, 250, 0.2);
  }
  50% {
    box-shadow: 0 0 40px rgba(96, 165, 250, 0.4);
  }
}

.animate-fade-in {
  animation: fade-in 0.8s ease-out forwards;
}

.animate-fade-in-up {
  animation: fade-in-up 0.8s ease-out forwards;
}

.animate-bounce-slow {
  animation: bounce-slow 2s ease-in-out infinite;
}

.animate-pulse-glow {
  animation: pulse-glow 3s ease-in-out infinite;
}

.animation-delay-200 {
  animation-delay: 0.2s;
  opacity: 0;
}

.animation-delay-400 {
  animation-delay: 0.4s;
  opacity: 0;
}

.animation-delay-600 {
  animation-delay: 0.6s;
  opacity: 0;
}

/* Scroll Indicator */
.scroll-indicator {
  opacity: 0.6;
  transition: opacity 0.3s ease;
}

.scroll-indicator:hover {
  opacity: 1;
}

/* Focus States */
*:focus-visible {
  outline: 2px solid var(--kai-sky);
  outline-offset: 2px;
}

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

/* Loading State */
.btn-loading {
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Hide default elements */
.hidden {
  display: none !important;
}

/* Smooth scrolling offset for fixed header */
html {
  scroll-padding-top: 80px;
}