:root {
  --background: 263 48% 96%;
  --foreground: 260 35% 12%;
  --primary: 268 88% 55%;
  --secondary: 264 48% 92%;
  --muted: 262 16% 45%;
  --destructive: 348 86% 55%;
  --border: 263 30% 84%;
  --card: 0 0% 100%;
  --shadow-sm: 0 8px 24px hsl(263 60% 30% / 0.10);
  --shadow-md: 0 18px 48px hsl(263 65% 28% / 0.16);
  --shadow-lg: 0 28px 80px hsl(263 70% 24% / 0.22);
  --transition-fast: 160ms ease;
  --transition-smooth: 320ms cubic-bezier(0.22, 1, 0.36, 1);
  --radius-sm: 14px;
  --radius-md: 22px;
  --radius-lg: 32px;
}

.dark {
  --background: 258 44% 8%;
  --foreground: 260 50% 96%;
  --primary: 277 96% 68%;
  --secondary: 258 38% 15%;
  --muted: 260 18% 70%;
  --destructive: 348 86% 62%;
  --border: 258 30% 24%;
  --card: 258 42% 12%;
  --shadow-sm: 0 8px 24px hsl(0 0% 0% / 0.22);
  --shadow-md: 0 18px 48px hsl(0 0% 0% / 0.32);
  --shadow-lg: 0 28px 80px hsl(0 0% 0% / 0.42);
}

* {
  box-sizing: border-box;
}

html {
  min-height: 100%;
  background: hsl(var(--background));
}

body {
  min-height: 100%;
  margin: 0;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: hsl(var(--background));
  color: hsl(var(--foreground));
}

button, input {
  font: inherit;
}

input {
  font-size: max(16px, 1rem);
}

button {
  -webkit-tap-highlight-color: transparent;
}

.sara-ambient {
  background:
    radial-gradient(circle at 18% 12%, hsl(var(--primary) / 0.28), transparent 28%),
    radial-gradient(circle at 86% 18%, hsl(188 92% 58% / 0.22), transparent 26%),
    radial-gradient(circle at 48% 92%, hsl(318 88% 64% / 0.18), transparent 35%);
  filter: blur(4px);
}

.sara-orb {
  width: min(72vw, 310px);
  aspect-ratio: 1;
  border-radius: 999px;
  display: flex;
  align-items: center;
  justify-content: center;
  background:
    radial-gradient(circle at 35% 28%, hsl(0 0% 100% / 0.92), transparent 18%),
    linear-gradient(135deg, hsl(var(--primary)), hsl(318 88% 62%), hsl(190 90% 56%));
  box-shadow: 0 0 70px hsl(var(--primary) / 0.42), inset 0 -24px 48px hsl(0 0% 0% / 0.18);
  position: relative;
  transition: transform var(--transition-smooth), filter var(--transition-smooth);
}

.sara-orb::before,
.sara-orb::after {
  content: "";
  position: absolute;
  inset: -18px;
  border-radius: inherit;
  border: 1px solid hsl(var(--primary) / 0.28);
  animation: pulseRing 2.8s ease-in-out infinite;
}

.sara-orb::after {
  inset: -34px;
  animation-delay: 0.55s;
  opacity: 0.6;
}

.sara-orb.is-listening {
  transform: scale(1.045);
  filter: saturate(1.2);
}

.sara-orb.is-listening::before,
.sara-orb.is-listening::after {
  border-color: hsl(190 90% 58% / 0.65);
  animation-duration: 1.35s;
}

.sara-orb-inner {
  width: 58%;
  aspect-ratio: 1;
  border-radius: inherit;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  background: hsl(0 0% 100% / 0.14);
  border: 1px solid hsl(0 0% 100% / 0.35);
  backdrop-filter: blur(12px);
}

.feature-card {
  min-height: 76px;
  border-radius: var(--radius-md);
  background: hsl(var(--card) / 0.88);
  border: 1px solid hsl(var(--border));
  box-shadow: var(--shadow-sm);
  display: flex;
  gap: 10px;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  color: hsl(var(--foreground));
}

.feature-card svg {
  color: hsl(var(--primary));
}

@keyframes pulseRing {
  0%, 100% {
    transform: scale(0.96);
    opacity: 0.36;
  }
  50% {
    transform: scale(1.06);
    opacity: 0.72;
  }
}

::-webkit-scrollbar {
  width: 10px;
}

::-webkit-scrollbar-thumb {
  background: hsl(var(--primary) / 0.35);
  border-radius: 999px;
}

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