:root {
    --bg-dark: #1f2937; --bg-medium: #374151; --bg-light: #4b5563;
    --border-color: #6b7280; --text-primary: #f9fafb; --text-secondary: #d1d5db;
    --accent-blue: #3b82f6; --accent-green: #22c55e; --accent-red: #ef4444; --accent-yellow: #f59e0b;
    --font-family: 'Roboto', sans-serif;
}

html, body {
    width: 100%; height: 100%; margin: 0; padding: 0; overflow: hidden;
    background-color: var(--bg-dark); color: var(--text-primary); font-family: var(--font-family);
    font-weight: 300; touch-action: none;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.game-container {
    width: 100%; height: 100%; display: flex; flex-direction: column;
}

.header {
    padding: 0 15px; display: flex; justify-content: space-between; align-items: center;
    background-color: var(--bg-dark); border-bottom: 1px solid var(--border-color);
    flex-shrink: 0; height: 59px;
}

.header h1 { margin: 0; font-size: 20px; font-weight: 500; }
.sim-controls { display: flex; align-items: center; gap: 10px; }

.canvas-container {
    flex-grow: 1; position: relative; background-color: #111827;
}
#planetCanvas { display: block; width: 100%; height: 100%; cursor: none; }
#cursor-preview { position: absolute; border: 2px solid white; border-radius: 50%; pointer-events: none; mix-blend-mode: difference; display: none; }

.sidebar {
    position: absolute; top: 0; left: 0; width: 300px; height: 100%;
    background-color: var(--bg-medium); z-index: 100;
    transform: translateX(-100%);
    -webkit-transform: translateX(-100%);
    transition: transform 0.3s ease-in-out;
    -webkit-transition: -webkit-transform 0.3s ease-in-out;
    display: flex; flex-direction: column; border-right: 1px solid var(--border-color);
    will-change: transform;
}
.sidebar.is-open {
    transform: translateX(0);
    -webkit-transform: translateX(0);
}
.control-panel { padding: 20px; overflow-y: auto; display: flex; flex-direction: column; gap: 20px; }
.info-panel-mobile { padding: 15px; overflow-y: scroll; border-top: 1px solid var(--border-color); flex-grow: 1; }

.toggle-controls-btn {
    background: none; border: none; padding: 8px; cursor: pointer;
    -webkit-tap-highlight-color: transparent;
}
.toggle-controls-btn svg { width: 28px; height: 28px; stroke: var(--text-secondary); }

h2 { margin: 0 0 15px 0; font-weight: 400; border-bottom: 1px solid var(--border-color); padding-bottom: 10px; font-size: 1.2rem; }
h3 { font-weight: 400; color: var(--text-secondary); margin: 0 0 10px 0; font-size: 1rem; }

button {
    background-color: var(--bg-light); border: 1px solid var(--border-color); color: var(--text-secondary);
    font-family: var(--font-family); font-size: 16px; padding: 14px; text-align: left; border-radius: 8px;
    cursor: pointer; transition: background-color 0.2s ease, color 0.2s ease; display: flex; align-items: center; gap: 12px; min-height: 48px;
    -webkit-tap-highlight-color: transparent;
}
button:hover, button:focus { background-color: var(--border-color); color: var(--text-primary); outline: none; }
button.active { background-color: var(--accent-blue); color: #fff; border-color: var(--accent-blue); }

.tool-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.brush-controls .tool-grid { grid-template-columns: repeat(4, 1fr); }
.brush-controls button { justify-content: center; font-size: 18px; padding: 10px; }

.info-panel-desktop { display: none; }
.log-container p, .civ-info-container p { margin: 2px 0; font-size: 12px; }
.log-container p { margin: 0 0 8px 0; font-size: 14px; }
.log-container p.info { color: var(--accent-blue); }
.log-container p.event { color: var(--accent-green); }
.log-container p.warn { color: var(--accent-red); }
.log-container p.civ { color: var(--accent-yellow); }

.civ-card { background: var(--bg-medium); padding: 10px; border-radius: 5px; margin-bottom: 10px; }
.civ-card h4 { margin: 0 0 5px; }


@media (min-width: 800px) {
    .game-container {
        width: 98vw; height: 98vh; max-width: 1600px; max-height: 950px;
        display: grid; grid-template-columns: 320px 1fr; grid-template-rows: 60px 1fr 160px;
        border-radius: 12px; box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
    }
    .header { grid-column: 1 / 3; grid-row: 1 / 2; padding: 0 25px; }
    .header h1 { font-size: 26px; }
    .toggle-controls-btn { display: none; }
    .canvas-container { grid-column: 2 / 3; grid-row: 2 / 3; }
    
    .sidebar {
        position: static; grid-column: 1 / 2; grid-row: 2 / 4;
        transform: none; -webkit-transform: none; transition: none; -webkit-transition: none; height: auto;
    }
    .info-panel-mobile { display: none; }
    
    .info-panel-desktop {
        display: grid; grid-template-columns: 1fr 300px;
        grid-column: 2 / 3; grid-row: 3 / 4;
        background-color: var(--bg-dark); border-top: 1px solid var(--border-color);
    }
    .log-container { padding: 15px; overflow-y: scroll; }
    .civ-info-container { padding: 15px; border-left: 1px solid var(--border-color); overflow-y: scroll; }
}