---
name: panel-grid-layout-f7c1897a8ab8
description: CSS grid layout system for a responsive panel dashboard with dark theme. Uses CSS custom properties, auto-fill grid, and monospace font aesthetic inspired by worldmonitor.
---

# Panel Grid Layout & Dark Theme

## CSS Variables (Dark Theme)

Create `src/styles/main.css` with these CSS custom properties:

```css
:root {
  /* Backgrounds */
  --bg: #0a0a0a;
  --bg-secondary: #111;
  --surface: #141414;
  --surface-hover: #1e1e1e;

  /* Borders */
  --border: #2a2a2a;
  --border-strong: #444;
  --border-subtle: #1a1a1a;

  /* Text */
  --text: #e8e8e8;
  --text-secondary: #ccc;
  --text-dim: #888;
  --text-muted: #666;
  --text-faint: #555;
  --accent: #fff;

  /* Overlays */
  --overlay-subtle: rgba(255, 255, 255, 0.03);
  --overlay-light: rgba(255, 255, 255, 0.05);

  /* Status & Semantic Colors */
  --green: #44ff88;
  --red: #ff4444;
  --yellow: #ffaa00;
  --semantic-critical: #ff4444;
  --semantic-high: #ff8800;
  --semantic-positive: #44ff88;
  --semantic-info: #3b82f6;

  /* Status indicators */
  --status-live: #44ff88;
  --status-cached: #ffaa00;
  --status-unavailable: #ff4444;

  /* Font */
  --font-mono: 'SF Mono', 'Monaco', 'Cascadia Code', 'Fira Code', monospace;
  --font-body: var(--font-mono);
}
```

## Base Styles

```css
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html, body {
  height: 100%;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 13px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

/* Scrollbar */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: #333; border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: #555; }
```

## Grid Layout

```css
.panels-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  grid-auto-flow: row dense;
  grid-auto-rows: minmax(200px, 380px);
  gap: 4px;
  padding: 4px;
  align-content: start;
  align-items: stretch;
  min-height: 0;
}
```

## Panel Base Styles

```css
.panel {
  background: var(--surface);
  border: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  height: 100%;
  min-height: 200px;
  min-width: 0;
  transition: transform 0.15s, box-shadow 0.15s;
  position: relative;
}

.panel.hidden { display: none; }

.panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 6px 10px;
  background: var(--overlay-subtle);
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}

.panel-header-left {
  display: flex;
  align-items: center;
  gap: 6px;
  min-width: 0;
}

.panel-title {
  font-size: 11px;
  font-weight: 700;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.panel-count {
  font-size: 10px;
  background: var(--overlay-light);
  color: var(--text-dim);
  padding: 1px 6px;
  border-radius: 8px;
  font-variant-numeric: tabular-nums;
}

.panel-content {
  flex: 1;
  overflow-y: auto;
  padding: 8px;
  font-size: 12px;
}

.panel-content::-webkit-scrollbar { width: 4px; }
.panel-content::-webkit-scrollbar-track { background: transparent; }
.panel-content::-webkit-scrollbar-thumb { background: var(--border); border-radius: 2px; }
```

## Loading & Error States

```css
.panel-loading {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 32px 16px;
  min-height: 120px;
}

.panel-loading-spinner {
  width: 32px;
  height: 32px;
  border: 2px solid var(--border);
  border-top-color: var(--green);
  border-radius: 50%;
  animation: spin 1s linear infinite;
  margin-bottom: 12px;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

.panel-loading-text {
  font-size: 12px;
  color: var(--accent);
  letter-spacing: 0.5px;
}

.panel-error-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 1.5rem 1rem;
  min-height: 120px;
}

.panel-error-msg {
  color: var(--text-dim);
  font-size: 11px;
}

.panel-retry-btn {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-dim);
  padding: 4px 12px;
  font-size: 10px;
  cursor: pointer;
  border-radius: 3px;
}

.panel-retry-btn:hover {
  border-color: var(--accent);
  color: var(--accent);
}
```

## Row/Item Patterns (reusable across panels)

```css
/* Generic list row */
.item-row {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 8px;
  border-bottom: 1px solid var(--border-subtle);
  transition: background 0.1s;
}
.item-row:hover { background: var(--surface-hover); }
.item-row:last-child { border-bottom: none; }

/* Positive/Negative change indicators */
.positive { color: var(--green); }
.negative { color: var(--red); }

/* Badge */
.badge {
  font-size: 9px;
  font-weight: 700;
  padding: 2px 6px;
  border-radius: 3px;
  letter-spacing: 0.5px;
}
.badge-live { background: rgba(68, 255, 136, 0.15); color: var(--green); }
.badge-warn { background: rgba(255, 170, 0, 0.15); color: var(--yellow); }
.badge-error { background: rgba(255, 68, 68, 0.15); color: var(--red); }

/* Tabular numbers for all numeric content */
.num { font-variant-numeric: tabular-nums; }
```

## Responsive Breakpoints

```css
@media (max-width: 768px) {
  .panels-grid {
    grid-template-columns: 1fr;
    grid-auto-rows: minmax(180px, auto);
  }
}

@media (min-width: 1600px) {
  .panels-grid {
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  }
}
```

## App Layout

```css
#app {
  display: flex;
  flex-direction: column;
  height: 100vh;
}

.app-header {
  display: flex;
  align-items: center;
  padding: 8px 12px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}

.app-header h1 {
  font-size: 14px;
  font-weight: 700;
  color: var(--green);
  letter-spacing: 1px;
  text-transform: uppercase;
}

.main-content {
  flex: 1;
  overflow-y: auto;
}
```



---
Source attribution: AG064
Original project: https://github.com/AG064/OpenSpace/blob/ff671ef61ed6587c49bd54c81cdc751c0b99e363/showcase/skills/panel-grid-layout/SKILL.md
License: MIT
License information: https://opensource.org/license/mit
Original upstream instructions; downloaded from Mega AI Hub.

## Upstream license notice

MIT License

Copyright (c) 2026 ✨Data Intelligence Lab@HKU✨

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.



# Mega AI Hub resource metadata

Creator / publisher: AG064
Original project: https://github.com/AG064/OpenSpace/blob/ff671ef61ed6587c49bd54c81cdc751c0b99e363/showcase/skills/panel-grid-layout/SKILL.md
Attribution basis: Source repository record

Fields of work: Design, Development & Engineering
Roles: Frontend Developer, Product Designer, UX Designer
Specialties: Cross Platform, Frontend
Tools: Tool not specified
Country applicability: Country not specified
Classification basis: Source catalog labels
Instruction SHA-256: f53010991f73f658c789a4be5afdffc58c50ba09601866f3c002a4903e183b46