frontend/src/app/globals.css

@import "tailwindcss";

:root {
  --font-inter: 'Inter', system-ui, -apple-system, sans-serif;
  /* Janus palette */
  --janus-bg: #0a0a0f;
  --janus-surface: #111118;
  --janus-surface-hover: #18181f;
  --janus-border: rgba(255, 255, 255, 0.06);
  --janus-border-hover: rgba(255, 255, 255, 0.12);
  --janus-indigo: #818cf8;
  --janus-violet: #a78bfa;
  --janus-text: #e5e7eb;
  --janus-text-muted: #6b7280;
  --janus-text-dim: #374151;
  --janus-glow: rgba(99, 102, 241, 0.15);
  /* Spacing */
  --sidebar-width: 260px;
  --sidebar-collapsed: 68px;
  --input-max-width: 768px;
}

@theme inline {
  --font-sans: var(--font-inter);
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font-inter);
  background-color: var(--janus-bg);
  color: var(--janus-text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

/* ─── Scrollbar ─── */
::-webkit-scrollbar { width: 5px; height: 5px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: rgba(255, 255, 255, 0.08); border-radius: 999px; }
::-webkit-scrollbar-thumb:hover { background: rgba(255, 255, 255, 0.15); }

/* ─── Selection ─── */
::selection { background: rgba(129, 140, 248, 0.3); }

/* ─── Focus ─── */
*:focus-visible {
  outline: 1px solid rgba(129, 140, 248, 0.5);
  outline-offset: 2px;
}

/* ─── Animations ─── */
@keyframes spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

@keyframes orbPulse {
  0%, 100% { transform: scale(1); opacity: 0.7; }
  50% { transform: scale(1.12); opacity: 1; }
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes shimmer {
  0% { background-position: -200% 0; }
  100% { background-position: 200% 0; }
}

@keyframes floatUp {
  0% { transform: translateY(0) scale(1); opacity: 0; }
  10% { opacity: 0.8; }
  90% { opacity: 0.4; }
  100% { transform: translateY(-100vh) scale(0.5); opacity: 0; }
}

@keyframes ring1 { from { transform: rotate(0deg); } to { transform: rotate(360deg); } }
@keyframes ring2 { from { transform: rotate(120deg); } to { transform: rotate(-240deg); } }
@keyframes ring3 { from { transform: rotate(240deg); } to { transform: rotate(600deg); } }

.janus-ring-1 { animation: ring1 3s linear infinite; }
.janus-ring-2 { animation: ring2 4s linear infinite; }
.janus-ring-3 { animation: ring3 5s linear infinite; }

/* ─── Glassmorphism ─── */
.glass {
  background: rgba(255, 255, 255, 0.025);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--janus-border);
}

.glass-hover {
  transition: all 0.3s ease;
}
.glass-hover:hover {
  background: rgba(255, 255, 255, 0.05);
  border-color: var(--janus-border-hover);
}

/* ─── Conversation Bubbles ─── */
.bubble-user {
  background: rgba(129, 140, 248, 0.08);
  border: 1px solid rgba(129, 140, 248, 0.12);
  border-radius: 20px 20px 4px 20px;
}

.bubble-janus {
  background: transparent;
  border-radius: 20px 20px 20px 4px;
}

/* ─── Input Bar ─── */
.input-bar {
  background: var(--janus-surface);
  border: 1px solid var(--janus-border);
  border-radius: 24px;
  transition: all 0.3s ease;
}
.input-bar:focus-within {
  border-color: rgba(129, 140, 248, 0.3);
  box-shadow: 0 0 0 1px rgba(129, 140, 248, 0.1), 0 4px 24px rgba(0, 0, 0, 0.3);
}

/* ─── Text Utilities ─── */
.text-gradient {
  background: linear-gradient(135deg, #e0e7ff 0%, #818cf8 50%, #a78bfa 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.text-gradient-subtle {
  background: linear-gradient(135deg, #f3f4f6 0%, #9ca3af 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ─── Page Container ─── */
.page-container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 2rem 2.5rem;
}

/* ─── Card ─── */
.card {
  background: var(--janus-surface);
  border: 1px solid var(--janus-border);
  border-radius: 16px;
  padding: 1.5rem;
  transition: all 0.3s ease;
}
.card:hover {
  border-color: var(--janus-border-hover);
}

/* ─── Shimmer Loading ─── */
.shimmer {
  background: linear-gradient(90deg, transparent 25%, rgba(129, 140, 248, 0.06) 50%, transparent 75%);
  background-size: 200% 100%;
  animation: shimmer 2s ease-in-out infinite;
}

/* ─── Prose ─── */
.prose { max-width: 65ch; }
.prose p { margin-bottom: 1em; }
.prose h1, .prose h2, .prose h3 { margin-top: 1.5em; margin-bottom: 0.5em; font-weight: 500; }
.prose ul, .prose ol { margin-bottom: 1em; padding-left: 1.5em; }
.prose li { margin-bottom: 0.25em; }
.prose code { background: rgba(255,255,255,0.06); padding: 0.15em 0.4em; border-radius: 4px; font-size: 0.875em; }
.prose pre { background: rgba(0,0,0,0.4); padding: 1em; border-radius: 8px; overflow-x: auto; margin-bottom: 1em; }
.prose pre code { background: transparent; padding: 0; }
.prose blockquote { border-left: 2px solid rgba(129,140,248,0.3); padding-left: 1em; color: #9ca3af; }
.prose-invert { color: #d1d5db; }

/* ─── Line Clamp ─── */
.line-clamp-1 { display: -webkit-box; -webkit-line-clamp: 1; -webkit-box-orient: vertical; overflow: hidden; }
.line-clamp-2 { display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.line-clamp-3 { display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; }

/* ─── Particle ─── */
.particle { animation: floatUp var(--duration, 20s) linear infinite; animation-delay: var(--delay, 0s); }