{
  "$schema": "../../docs/theme-schema.json",
  "theme": "echo-sub-zero",
  "author": "Gemini Collaborative Design",
  "description": "High-contrast minimalist. 3-stage signaling for CTX and Cost. 110-based mono-accent.",

  "colors": {
    "emphasis": {
      "primary":    255,
      "secondary":  250,
      "structural": 244,
      "separator":  239
    },
    "alerts": {
      "critical":  160,
      "warning":   191,
      "git_dirty": 214,
      "high_burn": 160
    },
    "active": {
      "accent":    110,
      "success":   108,
      "git_clean": 244
    }
  },

  "palette_mapping": {
    "emphasis_primary":    255,
    "emphasis_secondary":  250,
    "emphasis_structural": 244,
    "emphasis_separator":  239,

    "alert_red":           160,
    "alert_orange":        214,
    "alert_magenta":       160,

    "active_cyan":         110,
    "active_purple":       110,
    "active_teal":         110,
    "active_amber":        191,
    "active_coral":        174,

    "stable_blue":         109,
    "stable_green":        249,

    "indicator_claude_md": 242,
    "indicator_rules":     242,
    "indicator_memory":    242,
    "indicator_hooks":     242,
    "indicator_mcp":       242,
    "indicator_skills":    242,
    "indicator_duration":  242,

    "completed_check":     108,

    "cost_base":           110,
    "cost_low_rate":       248,
    "cost_med_rate":       110,
    "cost_high_rate":      160,

    "strata_state":        239,
    "strata_activity":     244,

    "aurora_low":          108,
    "aurora_mid":          114,
    "aurora_high":         191,

    "tag_label":           244,
    "head_agent":          174,
    "head_thinking":       191
  },

  "light_emphasis": {
    "primary": 234,
    "secondary": 241,
    "structural": 247,
    "separator": 253,
    "strata_state": 253,
    "strata_activity": 248,
    "aurora_low": 108,
    "aurora_mid": 114,
    "aurora_high": 191,
    "tag_label": 241
  },

  "usage_logic": {
    "stage_1_low":  { "value": "<55%",   "color": 249, "note": "Light Gray (正常運作 — 低調可讀)" },
    "stage_2_med":  { "value": "55-69%", "color": 191, "note": "Neon Lime (注意用量)" },
    "stage_3_high": { "value": ">=70%",  "color": 160, "note": "Vivid Red (必須清理)" }
  },

  "cost_logic": {
    "stage_1_low":  { "value": "<$10/h",   "color": 248, "note": "Ghost Gray (低負擔，視覺忽略)" },
    "stage_2_med":  { "value": "$10-50/h", "color": 110, "note": "Accent Blue (正常開銷)" },
    "stage_3_high": { "value": ">$50/h",   "color": 160, "note": "Vivid Red (高額噴錢)" }
  },

  "element_mapping": {
    "L1_identity": {
      "model":            { "color": 250, "note": "secondary — demoted, not special" },
      "agent_name":       { "color": 250, "note": "secondary" },
      "style":            { "color": 244, "note": "structural — fades away" },
      "version":          { "color": 244, "note": "structural" },
      "project":          { "color": 244, "note": "structural" },
      "git_branch_clean": { "color": 249, "note": "light gray — subtle but readable" },
      "git_branch_dirty": { "color": 214, "note": "唯一暖色 — pale gold asterisk" },
      "git_ahead_behind": { "color": 174, "note": "muted pink — warm accent for git direction" },
      "separators":       { "color": 239, "note": "separator" }
    },
    "L2_config_counts": {
      "icons":  { "color": 244, "note": "ALL ghosted to structural" },
      "counts": { "color": 110, "note": "accent — 唯一亮點 on L2" },
      "labels": { "color": 244, "note": "structural" }
    },
    "L3_budget": {
      "ctx_good":       { "color": 249, "note": "<55% (Light Gray — readable)" },
      "ctx_warn":       { "color": 191, "note": "55-69% (Neon Lime)" },
      "ctx_critical":   { "color": 160, "note": ">=70% (Vivid Red)" },
      "token_labels":   { "color": 244, "note": "structural" },
      "token_values":   { "color": 255, "note": "primary — brightest" },
      "cost_total":     { "color": 110, "note": "accent — no gold" },
      "cost_burn_low":  { "color": 248, "note": "<$10/h (Ghost Gray — disappears)" },
      "cost_burn_med":  { "color": 110, "note": "$10-50/h (Accent Blue)" },
      "cost_burn_high": { "color": 160, "note": ">$50/h (Vivid Red)" }
    },
    "activity": {
      "tool_name":       { "color": 110, "note": "accent — same as agent & todo" },
      "agent_name":      { "color": 110, "note": "accent — same as tool & todo" },
      "todo_text":       { "color": 110, "note": "accent — same as tool & agent" },
      "completed_check": { "color": 108, "note": "sage green — 勾選專屬" },
      "todo_all_done":   { "color": 108, "note": "sage green celebration" }
    }
  },

  "design_notes": {
    "philosophy": "Color signals STATE not TYPE. Prefix (T: A: TODO:) identifies type.",
    "total_unique_colors": 6,
    "color_vocabulary": {
      "110_steel_blue":  "active / happening / data worth reading",
      "108_sage_green":  "done / success / completed",
      "160_vivid_red":   "danger / critical / stop",
      "214_orange_gold": "dirty / changed (唯一暖色)",
      "191_neon_lime":   "mild warning (新信號色)",
      "248_ghost_gray":  "low importance (low cost disappears)"
    },
    "gray_scale": "255 > 250 > 244 > 239 (primary > secondary > structural > separator)"
  }
}
