:root { --bg: #0b0f19; --panel: #111827; --text: #e5e7eb; --accent: #3b82f6; --border: #374151; }
body { margin: 0; padding: 20px; font-family: 'Segoe UI', system-ui, sans-serif; background: var(--bg); color: var(--text); }
.container { max-width: 1200px; margin: 0 auto; }
header { text-align: center; margin-bottom: 2rem; }
.split-pane { display: flex; gap: 20px; flex-wrap: wrap; margin-bottom: 20px; }
.pane { flex: 1; min-width: 300px; display: flex; flex-direction: column; }
label { margin-bottom: 8px; font-weight: bold; color: #9ca3af; }
textarea { height: 400px; background: var(--panel); color: #10b981; border: 1px solid var(--border); padding: 15px; border-radius: 8px; font-family: monospace; font-size: 14px; resize: vertical; outline: none; white-space: pre; }
textarea:focus { border-color: var(--accent); }
#md-out { color: #facc15; }
button { background: var(--accent); color: #fff; border: none; padding: 12px 24px; font-size: 16px; border-radius: 6px; cursor: pointer; transition: 0.2s; font-weight: bold; display:block; width:100%; }
button:hover { background: #2563eb; }
.tool-matrix { margin-top: 40px; padding-top: 30px; border-top: 1px solid var(--border); text-align: center; }
.matrix-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(180px, 1fr)); gap: 10px; margin-top: 20px; }
.matrix-grid a { background: var(--panel); color: var(--text); padding: 10px; border-radius: 6px; text-decoration: none; border: 1px solid var(--border); transition: 0.2s; font-size: 0.9rem; }
.matrix-grid a:hover { background: var(--border); border-color: var(--accent); }
.donate-text { color: #9ca3af; font-size: 0.9rem; }
.support-text a { color: var(--accent); text-decoration: none; font-weight: bold; }