chatkit/frontend/src/index.css

@import "tailwindcss";

:root {
  /* Warm, educational color palette */
  --color-primary: #1e3a5f;
  --color-primary-light: #2d5a87;
  --color-accent: #e76f51;
  --color-accent-light: #f4a261;
  --color-success: #2a9d8f;
  --color-warning: #e9c46a;
  --color-background: #faf8f5;
  --color-surface: #ffffff;
  --color-text: #1a1a2e;
  --color-text-muted: #64748b;
  --color-border: #e2e0dc;
  
  /* Glassmorphism */
  --glass-bg: rgba(255, 255, 255, 0.85);
  --glass-border: rgba(255, 255, 255, 0.5);
  
  color-scheme: light;
}

:root[data-color-scheme="dark"] {
  --color-primary: #5b8fb9;
  --color-primary-light: #7eb8da;
  --color-accent: #f4a261;
  --color-accent-light: #e76f51;
  --color-success: #4fd1c5;
  --color-warning: #fbd38d;
  --color-background: #0f172a;
  --color-surface: #1e293b;
  --color-text: #f1f5f9;
  --color-text-muted: #94a3b8;
  --color-border: #334155;
  
  --glass-bg: rgba(30, 41, 59, 0.85);
  --glass-border: rgba(51, 65, 85, 0.5);
  
  color-scheme: dark;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-color-scheme]) {
    --color-primary: #5b8fb9;
    --color-primary-light: #7eb8da;
    --color-accent: #f4a261;
    --color-accent-light: #e76f51;
    --color-success: #4fd1c5;
    --color-warning: #fbd38d;
    --color-background: #0f172a;
    --color-surface: #1e293b;
    --color-text: #f1f5f9;
    --color-text-muted: #94a3b8;
    --color-border: #334155;
    
    --glass-bg: rgba(30, 41, 59, 0.85);
    --glass-border: rgba(51, 65, 85, 0.5);
    
    color-scheme: dark;
  }
}

@theme inline {
  --color-background: var(--color-background);
  --color-foreground: var(--color-text);
  --font-sans: 'Instrument Sans', system-ui, sans-serif;
  --font-display: 'Fraunces', Georgia, serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  padding: 0;
  background: var(--color-background);
  color: var(--color-text);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Background pattern */
body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: 
    radial-gradient(circle at 20% 20%, rgba(231, 111, 81, 0.08) 0%, transparent 50%),
    radial-gradient(circle at 80% 80%, rgba(42, 157, 143, 0.08) 0%, transparent 50%),
    radial-gradient(circle at 50% 50%, rgba(30, 58, 95, 0.05) 0%, transparent 70%);
  pointer-events: none;
  z-index: -1;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 1.2;
  margin: 0;
}

/* Custom scrollbar */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

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

::-webkit-scrollbar-thumb:hover {
  background: var(--color-text-muted);
}

/* Button styles */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 0.95rem;
  border-radius: 12px;
  border: none;
  cursor: pointer;
  transition: all 0.2s ease;
  text-decoration: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
  color: white;
  box-shadow: 0 4px 14px rgba(30, 58, 95, 0.25);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(30, 58, 95, 0.35);
}

.btn-accent {
  background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-accent-light) 100%);
  color: white;
  box-shadow: 0 4px 14px rgba(231, 111, 81, 0.25);
}

.btn-accent:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(231, 111, 81, 0.35);
}

.btn-outline {
  background: transparent;
  color: var(--color-text);
  border: 2px solid var(--color-border);
}

.btn-outline:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

/* Card styles */
.card {
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  border: 1px solid var(--glass-border);
  border-radius: 20px;
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.06);
}

/* Input styles */
.input {
  width: 100%;
  padding: 0.875rem 1rem;
  font-family: var(--font-sans);
  font-size: 1rem;
  color: var(--color-text);
  background: var(--color-surface);
  border: 2px solid var(--color-border);
  border-radius: 12px;
  outline: none;
  transition: all 0.2s ease;
}

.input:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 4px rgba(30, 58, 95, 0.1);
}

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

/* Badge styles */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  padding: 0.25rem 0.75rem;
  font-size: 0.8rem;
  font-weight: 600;
  border-radius: 9999px;
}

.badge-success {
  background: rgba(42, 157, 143, 0.15);
  color: var(--color-success);
}

.badge-warning {
  background: rgba(233, 196, 106, 0.2);
  color: #b7791f;
}

/* Animations */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes pulse {
  0%, 100% {
    opacity: 1;
  }
  50% {
    opacity: 0.6;
  }
}

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

.animate-fade-in-up {
  animation: fadeInUp 0.6s ease-out forwards;
}

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

.animate-float {
  animation: float 6s ease-in-out infinite;
}

/* Staggered animations */
.stagger-1 { animation-delay: 0.1s; }
.stagger-2 { animation-delay: 0.2s; }
.stagger-3 { animation-delay: 0.3s; }
.stagger-4 { animation-delay: 0.4s; }
.stagger-5 { animation-delay: 0.5s; }

/* Utility classes */
.text-gradient {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ChatKit customization - Force Traditional Chinese */
.chatkit-container,
[data-chatkit-composer] {
  /* Force zh-TW locale */
}

/* Override ChatKit placeholder text to Traditional Chinese */
[data-chatkit-composer] textarea::placeholder,
[data-chatkit-composer] input::placeholder,
.chatkit-composer textarea::placeholder,
.chatkit-composer input::placeholder {
  /* This may not work as ChatKit uses iframe */
}

/* ChatKit customization */
.chatkit-container {
  --ck-color-primary: var(--color-primary);
  --ck-color-background: var(--color-surface);
  --ck-border-radius: 16px;
  display: flex;
  flex-direction: column;
}

/* Ensure ChatKit elements are visible */
.chatkit-container > * {
  min-height: 0;
  flex: 1;
}

/* Make sure the input area is always visible */
[data-chatkit-composer],
[class*="composer"],
[class*="Composer"] {
  position: relative !important;
  z-index: 10;
}