{
  "id": "blueprint-explainer",
  "name": "Blueprint Explainer",
  "tagline": "Thin line drawings on a navy grid, a needle that sweeps, a formula that writes itself and calm subtitles.",
  "description": "Patient teaching style for science, maths and how-it-works explainers. White and cyan line art draws itself on a navy blueprint grid, a gauge needle sweeps into place, an italic serif formula writes on letter by letter, measurements appear in amber mono, and one subtitle line at the bottom narrates each step.",
  "mood": [
    "calm",
    "curious",
    "clear"
  ],
  "pacing": "slow",
  "format": "16:9",
  "width": 1920,
  "height": 1080,
  "durationSeconds": 9,
  "palette": {
    "background": "#0f1626",
    "grid": "rgba(122,140,170,0.08)",
    "line": "#e8edf5",
    "object": "#7fd3ff",
    "measure": "#ffc857",
    "needle": "#ff6b6b",
    "muted": "#7a869c"
  },
  "fonts": {
    "display": {
      "family": "STIX Two Text",
      "weights": [
        500,
        "500 italic"
      ],
      "source": "Google Fonts",
      "usage": "Formulas 76–92px; variables in italic, operators upright"
    },
    "body": {
      "family": "IBM Plex Sans",
      "weights": [
        400,
        500
      ],
      "source": "Google Fonts",
      "usage": "Subtitles 34px; questions 64px muted"
    },
    "mono": {
      "family": "IBM Plex Mono",
      "weights": [
        500
      ],
      "source": "Google Fonts",
      "usage": "Measurements and timers 30px in amber"
    }
  },
  "easing": {
    "draw": "power2.inOut",
    "needle": "back.out(1.6)",
    "move": "power2.out / none (constant speed when measuring)",
    "subtitle": "power1.out"
  },
  "transitions": [
    "no cuts: elements draw on, fade up 20px or fade out in place",
    "subtitles crossfade (0.3s out, 0.4s in)"
  ],
  "textAnimations": [
    "formula writes on character by character (40ms)",
    "amber underline draws beneath the key line",
    "timer counts with the motion (0:00 → 2:00 h)",
    "needle wobbles gently to show an instantaneous value"
  ],
  "rhythm": {
    "averageShotSeconds": 2.2,
    "notes": "One idea per ~2.2s beat, each with exactly one subtitle. Give drawings time to finish before the next line appears."
  },
  "tags": [
    "explainer",
    "education",
    "diagram",
    "math",
    "blueprint"
  ],
  "guide": "- Navy #0f1626 with a faint 60px grid; draw everything as 3–5px strokes, no fills except tiny hubs.\n- Objects are cyan #7fd3ff, structure is off-white #e8edf5, measurements are amber #ffc857 mono, warnings/needles coral.\n- Draw lines with pathLength=1 and dashoffset 1→0 (power2.inOut). Move objects at constant speed when the motion itself is being measured.\n- Formulas in STIX Two Text: italic variables, upright operators; reveal letter by letter and underline the key one.\n- Always keep exactly one plain-language subtitle at the bottom (34px), phrased as a narrator would say it.\n- Build to a question, then answer it in amber italic."
}