TITLE: ALBA — balloon festival at dawn
PROMPT: Create 'ALBA — balloon festival', a dawn launch scene: a misty valley at first light (layered hills fading into morning haze), a lake reflecting pastel sky, and hot-air balloons — striped, dotted, chevroned — inflating on the field then rising one by one with burner flames that whoosh (WebAudio, gesture-gated) and gentle bobbing; tiny chase vehicles on the road below. Palette: apricot dawn, rose mist, teal lake, balloon brights. Interactions: drag a balloon's altitude line to re-moor or release it; tap a balloon for a passenger card and a slow burner burst; the SUN arc drags time from night launch glow to full morning, regrading all light; wind drifts everything slowly across the valley; a REGATTA button choreographs a synchronized mass ascent. Serene, wide, breath-catching.
DESCRIPTION: A dawn valley in layered mist: three hill bands fade into haze, a lake with a shimmering sun reflection stripe, drifting clouds, and a launch field with a dashed road where two chase vehicles putt along. Eight hot-air balloons in four pattern families (stripes, dots, chevrons, panels) and six hue sets inflate on the field and rise with bezier-drawn envelopes, basket ropes, burner flames, lake reflections, and gentle sway. The SUN slider regrades the entire scene through night-launch → first light → golden hour → full morning via interpolated palettes; drag any balloon vertically to set its altitude; BURN fires simultaneous burners with a filtered-noise whoosh; GUST pushes wind drift; ALL UP choreographs the mass ascent.
TECHNIQUES: multi-stop palette interpolation across sun positions, bezier-curve balloon envelopes with clipped pattern fills and gradient shading, mirrored lake reflections at reduced alpha, layered mist hills, shimmer reflection stripes, WebAudio lowpass filtered-noise burner whoosh (gesture-gated), per-balloon state machines (grounded/inflight/burner), pointer altitude dragging, ambient cloud and chase-vehicle drift.
INTERACTION: Drag the sun slider from night to morning; drag balloons up/down to fly or moor them; BURN fires the burners with sound; GUST pushes the fleet; ALL UP launches the regatta; tap balloons near their envelope to grab them.