:root {
    --bg: #0d1117;
    --card: #161b22;
    --accent: #ffc300;
    --border: #30363d;
    --text: #e6edf3;
    --earth-blue: #44aaff;
}

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg);
    color: var(--text);
    margin: 0;
}

.main-content-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
    text-align: center;
}

.tool-title { color: var(--accent); font-size: 2rem; font-weight: bold; margin-bottom: 5px; }
.steps { color: #8b949e; margin-bottom: 25px; font-size: 1rem;}

.main-layout {
    display: grid;
    grid-template-columns: 1fr 320px;
    gap: 25px;
    margin-top: 20px;
}

@media (max-width: 950px) { 
    .main-layout { grid-template-columns: 1fr; } 
}

.canvas-area {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 15px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.4);
}

canvas {
    max-width: 100%;
    height: auto;
    background: #000;
    cursor: crosshair;
    border-radius: 8px;
    border: 1px solid #444;
}

.panel-stats {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.stat-card-solar {
    background: var(--card);
    border: 1px solid var(--border);
    padding: 25px;
    border-radius: 12px;
    text-align: left;
    transition: transform 0.2s;
}

.stat-card-solar h3 { margin: 0 0 10px 0; font-size: 0.85em; color: #8b949e; text-transform: uppercase; letter-spacing: 1px; }
.stat-value-solar { font-size: 2em; font-weight: bold; color: var(--accent); }
.stat-unit-solar { font-size: 0.5em; color: var(--text); margin-left: 5px; }

.btn-tool {
    background: var(--border);
    color: white;
    padding: 12px;
    border-radius: 6px;
    cursor: pointer;
    border: 1px solid transparent;
    width: 100%;
    font-weight: bold;
    transition: 0.3s;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.btn-tool:hover { background: #444; border-color: var(--accent); }
.btn-active { background: var(--accent) !important; color: #000 !important; }

.earth-compare {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-top: 15px;
    padding: 12px;
    background: rgba(68, 170, 255, 0.1);
    border-radius: 8px;
    color: var(--earth-blue);
    font-weight: 500;
}

#imgInput { display: none; }

footer {
    margin-top: 50px;
    padding: 20px;
    border-top: 1px solid var(--border);
    color: #8b949e;
    font-size: 0.9rem;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 20px;
    flex-wrap: wrap;
}