chatkit/frontend/src/index.css

@import "tailwindcss";

:root {
  --color-primary: #1e3a5f;
  --color-primary-light: #2d5a87;
  --color-accent: #fbbf24;
  --color-success: #059669;
  --color-warning: #d97706;
  --color-background: #f5f6f8;
  --color-surface: #ffffff;
  --color-text: #111827;
  --color-text-muted: #6b7280;
  --color-border: #e5e7eb;

  --glass-bg: #ffffff;
  --glass-border: #e5e7eb;

  color-scheme: light;
}

@theme inline {
  --color-background: var(--color-background);
  --color-foreground: var(--color-text);
  --font-sans: 'Inter', system-ui, sans-serif;
  --font-display: 'Lora', 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;
}

/* Typography
   Wrapped in @layer base so Tailwind utility classes (e.g. font-sans),
   which Tailwind puts in @layer utilities, can actually override this —
   unlayered CSS always beats layered CSS regardless of specificity, so
   without this @layer wrapper a `font-sans` class on an <h3> had no effect
   at all against this rule. */
@layer base {
  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: 6px;
  height: 6px;
}

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

::-webkit-scrollbar-thumb {
  background: var(--color-border);
  border-radius: 3px;
}

::-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: 0.625rem 1.25rem;
  font-family: var(--font-sans);
  font-weight: 500;
  font-size: 0.875rem;
  border-radius: 8px;
  border: none;
  cursor: pointer;
  transition: all 0.15s ease;
  text-decoration: none;
}

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

.btn-primary:hover {
  background: var(--color-primary-light);
}

.btn-accent {
  background: var(--color-accent);
  color: #1a2332;
  font-weight: 600;
}

.btn-accent:hover {
  background: #f59e0b;
}

/* Sparkle particle (spawned programmatically on button click) */
@keyframes sparkle-fly {
  0%   { transform: translate(0, 0) scale(1); opacity: 1; }
  100% { transform: translate(var(--dx), var(--dy)) scale(0); opacity: 0; }
}

.sparkle-particle {
  position: absolute;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--color-accent, #fbbf24);
  box-shadow: 0 0 6px 1px rgba(251, 191, 36, 0.6);
  pointer-events: none;
  animation: sparkle-fly 0.75s ease-out forwards;
  z-index: 10;
}

.btn-outline {
  background: var(--color-surface);
  color: var(--color-text);
  border: 1px solid var(--color-border);
}

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

/* Card styles */
.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.05);
}

/* Input styles */
.input {
  width: 100%;
  padding: 0.75rem 1rem;
  font-family: var(--font-sans);
  font-size: 0.9375rem;
  color: var(--color-text);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  outline: none;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.input:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(30, 58, 95, 0.14);
}

.input:-webkit-autofill {
  -webkit-box-shadow: 0 0 0px 1000px var(--color-surface) inset;
  -webkit-text-fill-color: var(--color-text);
  border: 1px solid var(--color-border);
}

.input:-webkit-autofill:focus {
  -webkit-box-shadow: 0 0 0px 1000px var(--color-surface) inset, 0 0 0 3px rgba(30, 58, 95, 0.14);
  -webkit-text-fill-color: var(--color-text);
  border: 1px solid var(--color-primary);
}

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

/* Badge styles */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  padding: 0.2rem 0.625rem;
  font-size: 0.75rem;
  font-weight: 600;
  border-radius: 9999px;
}

.badge-success {
  background: rgba(5, 150, 105, 0.1);
  color: var(--color-success);
}

.badge-warning {
  background: rgba(217, 119, 6, 0.1);
  color: var(--color-warning);
}

/* Candy-stripe progress bar */
@keyframes stripe-slide {
  0%   { background-position: 0 0; }
  100% { background-position: 40px 0; }
}

@keyframes stripe-breathe {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0.75; }
}

.progress-stripe {
  background: repeating-linear-gradient(
    -45deg,
    var(--color-primary)      0px,
    var(--color-primary)      14px,
    var(--color-primary-light) 14px,
    var(--color-primary-light) 28px
  );
  background-size: 40px 40px;
  animation:
    stripe-slide   0.6s linear infinite,
    stripe-breathe 2s ease-in-out infinite;
}

/* Paper plane floating animation */
@keyframes plane-float {
  0%, 100% { transform: translateY(0px) rotate(0deg); }
  50%       { transform: translateY(-14px) rotate(-2deg); }
}
.plane-float { animation: plane-float 3.2s ease-in-out infinite; }

@keyframes arrow-nudge {
  0%, 100% { transform: translateX(0); opacity: 0.85; }
  50%      { transform: translateX(-4px); opacity: 1; }
}
.arrow-nudge { animation: arrow-nudge 1.4s ease-in-out infinite; }

/* Upload dropzone icon bounce — draws the eye to where a click is expected */
@keyframes upload-bounce {
  0%, 100% { transform: translateY(0); }
  50%      { transform: translateY(-6px); }
}
.upload-bounce { animation: upload-bounce 1.8s ease-in-out infinite; }

/* Coffee steam animation */
@keyframes steam-rise {
  0%   { transform: translateY(0) scaleX(1);   opacity: 0.7; }
  50%  { transform: translateY(-8px) scaleX(1.2); opacity: 0.4; }
  100% { transform: translateY(-16px) scaleX(0.8); opacity: 0; }
}

.steam-line {
  animation: steam-rise 1.6s ease-in-out infinite;
  transform-origin: bottom center;
}

.steam-line:nth-child(1) { animation-delay: 0s; }
.steam-line:nth-child(2) { animation-delay: 0.4s; }
.steam-line:nth-child(3) { animation-delay: 0.8s; }

/* Animations */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(16px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

.animate-fade-in-up {
  animation: fadeInUp 0.4s ease-out forwards;
}

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

.stagger-1 { animation-delay: 0.05s; }
.stagger-2 { animation-delay: 0.1s; }
.stagger-3 { animation-delay: 0.15s; }
.stagger-4 { animation-delay: 0.2s; }
.stagger-5 { animation-delay: 0.25s; }